更新build.sh

--no-check-certificate 导致的无法下载

README.md

@@ -1,22 +1,56 @@
 # rm_
     代替rm命令防止错误删除文件  
-    基于coreutils-8.32 mv源代码
+    基于coreutils-9.1 mv源代码
 
 # Build
-    git clone https://github.com/niuyuling/rm_.git  
+    git clone https://git.aixiao.me/aixiao/rm_
     cd rm_ 
-    apt-get build-dep coreutils
-    bash build_mv.sh
+    bash build.sh
     
 # Help Information
-    root@niuyuling:/mnt/c/Users/niuyuling/Desktop/Arm-tool# rm_ busybox-1.31.1  
-    rm_ 
-    busybox-1.31.1  
-    /tmp/   
-    3   
-    root@niuyuling:/mnt/c/Users/niuyuling/Desktop/Arm-tool# 
-    
-    #支持配置文件
-    root@NIUYULING:/mnt/c/Users/niuyuling/Desktop/rm_# cat /etc/rm_.conf
-    /opt/
-    root@NIUYULING:/mnt/c/Users/niuyuling/Desktop/rm_#
+    root@NIUYULING:/mnt/c/Users/niuyuling/Desktop/rm_# ./rm_ --help
+    Usage: ./rm_ [OPTION]... [-T] SOURCE DEST
+      or:  ./rm_ [OPTION]... SOURCE... DIRECTORY
+      or:  ./rm_ [OPTION]... -t DIRECTORY SOURCE...
+    Rename SOURCE to DEST, or move SOURCE(s) to DIRECTORY.
+
+    Mandatory arguments to long options are mandatory for short options too.
+          --backup[=CONTROL]       make a backup of each existing destination file
+      -b                           like --backup but does not accept an argument
+      -f, --force                  do not prompt before overwriting
+      -i, --interactive            prompt before overwrite
+      -n, --no-clobber             do not overwrite an existing file
+    If you specify more than one of -i, -f, -n, only the final one takes effect.
+          --strip-trailing-slashes  remove any trailing slashes from each SOURCE
+                                     argument
+      -S, --suffix=SUFFIX          override the usual backup suffix
+      -t, --target-directory=DIRECTORY  move all SOURCE arguments into DIRECTORY
+      -T, --no-target-directory    treat DEST as a normal file
+      -u, --update                 move only when the SOURCE file is newer
+                                     than the destination file or when the
+                                     destination file is missing
+      -v, --verbose                explain what is being done
+      -Z, --context                set SELinux security context of destination
+                                     file to default type
+          --help        display this help and exit
+          --version     output version information and exit
+
+    Instead of rm command to prevent mistaken deletion of files
+    Author: aixiao@aixiao.me
+
+    代替rm命令，以防止错误删除文件
+    作者: aixiao@aixiao.me
+
+    The backup suffix is '~', unless set with --suffix or SIMPLE_BACKUP_SUFFIX.
+    The version control method may be selected via the --backup option or through
+    the VERSION_CONTROL environment variable.  Here are the values:
+
+      none, off       never make backups (even if --backup is given)
+      numbered, t     make numbered backups
+      existing, nil   numbered if numbered backups exist, simple otherwise
+      simple, never   always make simple backups
+
+    GNU coreutils online help: <https://www.gnu.org/software/coreutils/>
+    Report any translation bugs to <https://translationproject.org/team/>
+    Full documentation <https://www.gnu.org/software/coreutils/mv>
+    or available locally via: info '(coreutils) mv invocation'

build.sh

@@ -0,0 +1,141 @@
+#!/bin/bash
+#
+# Build MV command
+# Based on coreutils-9.1
+# Test System: Debian GNU/Linux bookworm/sid (WSL)  
+# 
+
+init()
+{
+    SHELL_FOLDER=$(dirname $(readlink -f "$0"));
+    CC=${CROSS_COMPILE}gcc
+    AR=${CROSS_COMPILE}ar
+    STRIP=${CROSS_COMPILE}strip
+}
+
+check_os()
+{
+    if test -f /etc/debian_version ; then
+        OS=debian
+        OS_VER=$(cat /etc/debian_version)
+        echo -e SYSTEM: DEBIAN $(uname -m) ${OS_VER}\\nKERNEL: $(uname -sr)
+        apt-get build-dep coreutils
+    else
+        echo "Only supports Debian system build source code！";
+        exit 3
+    fi
+}
+
+build_lib()
+{    
+    S=(lib/copy-acl.c lib/set-acl.c lib/acl-errno-valid.c lib/acl-internal.c lib/get-permissions.c lib/set-permissions.c lib/alignalloc.c lib/allocator.c lib/areadlink.c lib/areadlink-with-size.c lib/areadlinkat.c lib/areadlinkat-with-size.c lib/argmatch.c lib/argv-iter.c lib/openat-proc.c lib/backupfile.c lib/backup-rename.c lib/backupfile.c lib/backup-find.c lib/base32.c lib/base64.c lib/basename-lgpl.c lib/binary-io.c lib/bitrotate.c lib/buffer-lcm.c lib/c-ctype.c lib/c-strcasecmp.c lib/c-strncasecmp.c lib/c-strtod.c lib/c-strtold.c lib/canon-host.c lib/canonicalize.c lib/careadlinkat.c lib/chdir-long.c lib/chmodat.c lib/chownat.c lib/cl-strtod.c lib/cl-strtold.c lib/cloexec.c lib/close-stream.c lib/closein.c lib/closeout.c lib/count-leading-zeros.c lib/af_alg.c lib/md5-stream.c lib/md5.c lib/sha1-stream.c lib/sha1.c lib/sha256-stream.c lib/sha256.c lib/sha512-stream.c lib/sha512.c lib/sm3-stream.c lib/sm3.c lib/cycle-check.c lib/di-set.c lib/opendir-safer.c lib/dirname.c lib/basename.c lib/dirname-lgpl.c lib/stripslash.c lib/dtoastr.c lib/dtotimespec.c lib/malloc/dynarray_at_failure.c lib/malloc/dynarray_emplace_enlarge.c lib/malloc/dynarray_finalize.c lib/malloc/dynarray_resize.c lib/malloc/dynarray_resize_clear.c lib/exclude.c lib/exitfail.c lib/fadvise.c lib/fchmodat.c lib/fclose.c lib/fcntl.c lib/creat-safer.c lib/open-safer.c lib/fd-hook.c lib/fd-reopen.c lib/fd-safer-flag.c lib/dup-safer-flag.c lib/fdutimensat.c lib/fflush.c lib/file-has-acl.c lib/file-set.c lib/file-type.c lib/filemode.c lib/filenamecat.c lib/filenamecat-lgpl.c lib/filevercmp.c lib/fopen-safer.c lib/fprintftime.c lib/fpurge.c lib/freadahead.c lib/freading.c lib/freadptr.c lib/freadseek.c lib/freopen-safer.c lib/fseek.c lib/fseeko.c lib/fseterr.c lib/fsusage.c lib/ftoastr.c lib/fts.c lib/full-read.c lib/full-write.c lib/gethrxtime.c lib/xtime.c lib/getndelim2.c lib/getprogname.c lib/gettime.c lib/gettime-res.c lib/getugroups.c lib/hard-locale.c lib/hash.c lib/hash-pjw.c lib/hash-triple.c lib/hash-triple-simple.c lib/heap.c lib/human.c lib/i-ring.c lib/ialloc.c lib/idcache.c lib/ino-map.c lib/imaxtostr.c lib/inttostr.c lib/offtostr.c lib/uinttostr.c lib/umaxtostr.c lib/isapipe.c lib/ldtoastr.c lib/linebuffer.c lib/localcharset.c lib/glthread/lock.c lib/long-options.c lib/malloca.c lib/math.c lib/mbchar.c lib/mbiter.c lib/mbrlen.c lib/mbrtowc.c lib/mbsalign.c lib/mbscasecmp.c lib/mbschr.c lib/mbslen.c lib/mbsstr.c lib/mbswidth.c lib/mbuiter.c lib/memcasecmp.c lib/memchr2.c lib/memcmp2.c lib/memcoll.c lib/mgetgroups.c lib/mkancesdirs.c lib/dirchownmod.c lib/mkdir-p.c lib/mknod.c lib/mkstemp.c lib/modechange.c lib/mountlist.c lib/mpsort.c lib/nanosleep.c lib/nproc.c lib/nstrftime.c lib/obstack.c lib/openat-die.c lib/openat-safer.c lib/opendirat.c lib/parse-datetime.c lib/physmem.c lib/pipe2.c lib/posixtm.c lib/posixver.c lib/printf-frexp.c lib/printf-frexpl.c lib/priv-set.c lib/progname.c lib/propername.c lib/qcopy-acl.c lib/qset-acl.c lib/quotearg.c lib/randint.c lib/randperm.c lib/randread.c lib/rand-isaac.c lib/read-file.c lib/readtokens.c lib/readtokens0.c lib/readutmp.c lib/regex.c lib/renameatu.c lib/root-dev-ino.c lib/safe-read.c lib/safe-write.c lib/same.c lib/save-cwd.c lib/savedir.c lib/savewd.c lib/malloc/scratch_buffer_dupfree.c lib/malloc/scratch_buffer_grow.c lib/malloc/scratch_buffer_grow_preserve.c lib/malloc/scratch_buffer_set_array_size.c lib/selinux-at.c lib/getfilecon.c lib/se-context.c lib/se-label.c lib/se-selinux.c lib/setlocale_null.c lib/settime.c lib/sig2str.c lib/sig-handler.c lib/sockets.c lib/stat-time.c lib/mkstemp-safer.c lib/striconv.c lib/strnlen1.c lib/strintcmp.c lib/strnumcmp.c lib/sys_socket.c lib/targetdir.c lib/tempname.c lib/glthread/threadlib.c lib/time_rz.c lib/timegm.c lib/timespec.c lib/glthread/tls.c lib/trim.c lib/u64.c lib/unicodeio.c lib/unistd.c lib/dup-safer.c lib/fd-safer.c lib/pipe-safer.c lib/unistr/u8-mbtoucr.c lib/unistr/u8-uctomb.c lib/unistr/u8-uctomb-aux.c lib/uniwidth/width.c lib/unlinkdir.c lib/userspec.c lib/utimecmp.c lib/utimens.c lib/verror.c lib/version-etc.c lib/version-etc-fsf.c lib/wctype-h.c lib/write-any-file.c lib/xalignalloc.c lib/xmalloc.c lib/xalloc-die.c lib/xbinary-io.c lib/xdectoimax.c lib/xdectoumax.c lib/xfts.c lib/xgetcwd.c lib/xgetgroups.c lib/xgethostname.c lib/xmemcoll.c lib/xnanosleep.c lib/xprintf.c lib/xreadlink.c lib/xsize.c lib/xstriconv.c lib/xstrtod.c lib/xstrtoimax.c lib/xstrtol.c lib/xstrtoul.c lib/xstrtol-error.c lib/xstrtold.c lib/xstrtoumax.c lib/xvasprintf.c lib/xasprintf.c lib/yesno.c lib/asnprintf.c lib/mktime.c lib/printf-args.c lib/printf-parse.c lib/vasnprintf.c)
+    O="lib/copy-acl.o lib/set-acl.o lib/acl-errno-valid.o lib/acl-internal.o lib/get-permissions.o lib/set-permissions.o lib/alignalloc.o lib/allocator.o lib/areadlink.o lib/areadlink-with-size.o lib/areadlinkat.o lib/areadlinkat-with-size.o lib/argmatch.o lib/argv-iter.o lib/openat-proc.o lib/backupfile.o lib/backup-rename.o lib/backupfile.o lib/backup-find.o lib/base32.o lib/base64.o lib/basename-lgpl.o lib/binary-io.o lib/bitrotate.o lib/buffer-lcm.o lib/c-ctype.o lib/c-strcasecmp.o lib/c-strncasecmp.o lib/c-strtod.o lib/c-strtold.o lib/canon-host.o lib/canonicalize.o lib/careadlinkat.o lib/chdir-long.o lib/chmodat.o lib/chownat.o lib/cl-strtod.o lib/cl-strtold.o lib/cloexec.o lib/close-stream.o lib/closein.o lib/closeout.o lib/count-leading-zeros.o lib/af_alg.o lib/md5-stream.o lib/md5.o lib/sha1-stream.o lib/sha1.o lib/sha256-stream.o lib/sha256.o lib/sha512-stream.o lib/sha512.o lib/sm3-stream.o lib/sm3.o lib/cycle-check.o lib/di-set.o lib/opendir-safer.o lib/dirname.o lib/basename.o lib/dirname-lgpl.o lib/stripslash.o lib/dtoastr.o lib/dtotimespec.o lib/malloc/dynarray_at_failure.o lib/malloc/dynarray_emplace_enlarge.o lib/malloc/dynarray_finalize.o lib/malloc/dynarray_resize.o lib/malloc/dynarray_resize_clear.o lib/exclude.o lib/exitfail.o lib/fadvise.o lib/fchmodat.o lib/fclose.o lib/fcntl.o lib/creat-safer.o lib/open-safer.o lib/fd-hook.o lib/fd-reopen.o lib/fd-safer-flag.o lib/dup-safer-flag.o lib/fdutimensat.o lib/fflush.o lib/file-has-acl.o lib/file-set.o lib/file-type.o lib/filemode.o lib/filenamecat.o lib/filenamecat-lgpl.o lib/filevercmp.o lib/fopen-safer.o lib/fprintftime.o lib/fpurge.o lib/freadahead.o lib/freading.o lib/freadptr.o lib/freadseek.o lib/freopen-safer.o lib/fseek.o lib/fseeko.o lib/fseterr.o lib/fsusage.o lib/ftoastr.o lib/fts.o lib/full-read.o lib/full-write.o lib/gethrxtime.o lib/xtime.o lib/getndelim2.o lib/getprogname.o lib/gettime.o lib/gettime-res.o lib/getugroups.o lib/hard-locale.o lib/hash.o lib/hash-pjw.o lib/hash-triple.o lib/hash-triple-simple.o lib/heap.o lib/human.o lib/i-ring.o lib/ialloc.o lib/idcache.o lib/ino-map.o lib/imaxtostr.o lib/inttostr.o lib/offtostr.o lib/uinttostr.o lib/umaxtostr.o lib/isapipe.o lib/ldtoastr.o lib/linebuffer.o lib/localcharset.o lib/glthread/lock.o lib/long-options.o lib/malloca.o lib/math.o lib/mbchar.o lib/mbiter.o lib/mbrlen.o lib/mbrtowc.o lib/mbsalign.o lib/mbscasecmp.o lib/mbschr.o lib/mbslen.o lib/mbsstr.o lib/mbswidth.o lib/mbuiter.o lib/memcasecmp.o lib/memchr2.o lib/memcmp2.o lib/memcoll.o lib/mgetgroups.o lib/mkancesdirs.o lib/dirchownmod.o lib/mkdir-p.o lib/mknod.o lib/mkstemp.o lib/modechange.o lib/mountlist.o lib/mpsort.o lib/nanosleep.o lib/nproc.o lib/nstrftime.o lib/obstack.o lib/openat-die.o lib/openat-safer.o lib/opendirat.o lib/parse-datetime.o lib/physmem.o lib/pipe2.o lib/posixtm.o lib/posixver.o lib/printf-frexp.o lib/printf-frexpl.o lib/priv-set.o lib/progname.o lib/propername.o lib/qcopy-acl.o lib/qset-acl.o lib/quotearg.o lib/randint.o lib/randperm.o lib/randread.o lib/rand-isaac.o lib/read-file.o lib/readtokens.o lib/readtokens0.o lib/readutmp.o lib/regex.o lib/renameatu.o lib/root-dev-ino.o lib/safe-read.o lib/safe-write.o lib/same.o lib/save-cwd.o lib/savedir.o lib/savewd.o lib/malloc/scratch_buffer_dupfree.o lib/malloc/scratch_buffer_grow.o lib/malloc/scratch_buffer_grow_preserve.o lib/malloc/scratch_buffer_set_array_size.o lib/selinux-at.o lib/getfilecon.o lib/se-context.o lib/se-label.o lib/se-selinux.o lib/setlocale_null.o lib/settime.o lib/sig2str.o lib/sig-handler.o lib/sockets.o lib/stat-time.o lib/mkstemp-safer.o lib/striconv.o lib/strnlen1.o lib/strintcmp.o lib/strnumcmp.o lib/sys_socket.o lib/targetdir.o lib/tempname.o lib/glthread/threadlib.o lib/time_rz.o lib/timegm.o lib/timespec.o lib/glthread/tls.o lib/trim.o lib/u64.o lib/unicodeio.o lib/unistd.o lib/dup-safer.o lib/fd-safer.o lib/pipe-safer.o lib/unistr/u8-mbtoucr.o lib/unistr/u8-uctomb.o lib/unistr/u8-uctomb-aux.o lib/uniwidth/width.o lib/unlinkdir.o lib/userspec.o lib/utimecmp.o lib/utimens.o lib/verror.o lib/version-etc.o lib/version-etc-fsf.o lib/wctype-h.o lib/write-any-file.o lib/xalignalloc.o lib/xmalloc.o lib/xalloc-die.o lib/xbinary-io.o lib/xdectoimax.o lib/xdectoumax.o lib/xfts.o lib/xgetcwd.o lib/xgetgroups.o lib/xgethostname.o lib/xmemcoll.o lib/xnanosleep.o lib/xprintf.o lib/xreadlink.o lib/xsize.o lib/xstriconv.o lib/xstrtod.o lib/xstrtoimax.o lib/xstrtol.o lib/xstrtoul.o lib/xstrtol-error.o lib/xstrtold.o lib/xstrtoumax.o lib/xvasprintf.o lib/xasprintf.o lib/yesno.o lib/asnprintf.o lib/mktime.o lib/printf-args.o lib/printf-parse.o lib/vasnprintf.o"
+
+    for i in ${S[@]}; do
+        echo $i
+        o=$(echo $i | sed 's/\.c/\.o/');
+        echo $o;
+        ${CC} -I. -I./lib -Ilib -I./lib -g -O2 -c -o ${o} ${i}
+    done
+
+    ${AR} cr lib/libcoreutils.a ${O};
+}
+
+build_mv()
+{
+
+    ${CC} -I. -I./lib -Ilib -I./lib -Isrc -I./src -g -O2 -c -o src/version.o src/version.c
+    ${AR} cr src/libver.a src/version.o
+   
+    ${CC} -I. -I./lib -Ilib -I./lib -Isrc -I./src -g -O2 -c -o src/remove.o src/remove.c
+    ${CC} -I. -I./lib -Ilib -I./lib -Isrc -I./src -g -O2 -c -o src/copy.o src/copy.c
+    ${CC} -I. -I./lib -Ilib -I./lib -Isrc -I./src -g -O2 -c -o src/cp-hash.o src/cp-hash.c
+    ${CC} -I. -I./lib -Ilib -I./lib -Isrc -I./src -g -O2 -c -o src/force-link.o src/force-link.c
+    ${CC} -I. -I./lib -Ilib -I./lib -Isrc -I./src -g -O2 -c -o src/selinux.o src/selinux.c
+    ${CC} -I. -I./lib -Ilib -I./lib -Isrc -I./src -g -O2 -c -o src/mv.o src/mv.c
+
+
+    ${CC} -g -O2 -Wl,--as-needed -o src/mv src/mv.o src/remove.o src/copy.o src/cp-hash.o src/force-link.o src/selinux.o src/libver.a \
+        lib/libcoreutils.a lib/libcoreutils.a -lselinux -lacl -lattr -pthread  -lpcre2-8 -ldl -static
+
+    mv src/mv ./rm_
+    $STRIP ./rm_
+}
+
+installbin_()
+{
+    wget --no-check-certificate -O /bin/rm_ https://git.aixiao.me/attachments/aa26219b-868d-4eb4-a8e0-b1b04da7d964
+    chmod a+x /bin/rm_
+}
+
+install_() {
+    cp rm_ /bin/
+}
+
+uninstall_() {
+    rm /bin/rm_
+}
+
+help_() {
+    cat << EOF
+Usage:
+    ${0} [-x] [installbin|install|uninstall|build|clean].
+parameter: 
+    -x  : print debug.
+
+Option:  
+    installbin  : download bin.
+    install     : install bin.
+    uninstall   : uninstall bin.
+    build       : build project.
+    clean       : clean project.
+    
+EOF
+    exit 1;
+}
+
+
+while getopts :x arg; do
+    case ${arg} in
+        x)
+            debug=x;
+            ;;
+        *)
+            help_;
+            ;;
+    esac
+
+done
+shift $((OPTIND-1));        #参数移位
+test "${debug}" = "x" && set -x;
+
+init
+case $1 in
+    "install")
+        install_;
+        ;;
+    "uninstall")
+        uninstall_;
+        ;;
+    "build")
+        check_os
+        build_lib;
+        build_mv;
+        ;;
+    "clean")
+        rm `find . \( -name "*.a" -o -name "*.o" \) | xargs `
+        rm -rf rm_
+        exit 0;
+        ;;
+    "installbin")
+        installbin_
+        ;;
+    *)
+        help_;
+        ;;
+esac
+
+
+exit 0
+    by aixiao@aixiao.me
+20220728

build_mv.sh

@@ -1,57 +0,0 @@
-#!/bin/bsh
-#
-# Build MV command
-# based on coreutils-8.32 
-#
-
-function init() {
-    SHELL_FOLDER=$(dirname $(readlink -f "$0"));
-    set -x
-}
-
-function LIB() {
-    S=(copy-acl.c set-acl.c acl-errno-valid.c acl-internal.c get-permissions.c set-permissions.c allocator.c areadlink.c areadlink-with-size.c areadlinkat.c argmatch.c argv-iter.c openat-proc.c backupfile.c backup-rename.c backupfile.c backup-find.c base32.c base64.c binary-io.c bitrotate.c buffer-lcm.c c-ctype.c c-strcasecmp.c c-strncasecmp.c c-strtod.c c-strtold.c canon-host.c canonicalize.c careadlinkat.c chmodat.c chownat.c cl-strtod.c cl-strtold.c cloexec.c close-stream.c closein.c closeout.c count-leading-zeros.c af_alg.c md5.c sha1.c sha256.c sha512.c cycle-check.c di-set.c diacrit.c opendir-safer.c dirname.c basename.c dirname-lgpl.c basename-lgpl.c stripslash.c dtoastr.c dtotimespec.c exclude.c exitfail.c fadvise.c creat-safer.c open-safer.c fd-hook.c fd-reopen.c fd-safer-flag.c dup-safer-flag.c fdutimensat.c file-has-acl.c file-set.c file-type.c filemode.c filenamecat.c filenamecat-lgpl.c filevercmp.c fopen-safer.c fprintftime.c freading.c freadseek.c freopen-safer.c ftoastr.c full-read.c full-write.c gethrxtime.c xtime.c getndelim2.c getprogname.c gettime.c getugroups.c hard-locale.c hash.c hash-pjw.c hash-triple.c heap.c human.c i-ring.c idcache.c ino-map.c imaxtostr.c inttostr.c offtostr.c uinttostr.c umaxtostr.c ldtoastr.c linebuffer.c localcharset.c glthread/lock.c long-options.c malloca.c math.c mbchar.c mbiter.c mbsalign.c mbscasecmp.c mbschr.c mbslen.c mbsstr.c mbswidth.c mbuiter.c memcasecmp.c memchr2.c memcmp2.c memcoll.c mgetgroups.c mkancesdirs.c dirchownmod.c mkdir-p.c modechange.c mpsort.c nproc.c nstrftime.c openat-die.c openat-safer.c opendirat.c parse-datetime.c physmem.c pipe2.c posixtm.c posixver.c printf-frexp.c printf-frexpl.c priv-set.c progname.c propername.c qcopy-acl.c qset-acl.c quotearg.c randint.c randperm.c randread.c rand-isaac.c read-file.c readtokens.c readtokens0.c renameatu.c root-dev-ino.c safe-read.c safe-write.c same.c save-cwd.c savedir.c savewd.c selinux-at.c se-context.c se-selinux.c setlocale_null.c settime.c sig-handler.c sockets.c stat-time.c statat.c mkstemp-safer.c striconv.c strnlen1.c strintcmp.c strnumcmp.c sys_socket.c tempname.c glthread/threadlib.c timespec.c glthread/tls.c trim.c u64.c unicodeio.c unistd.c dup-safer.c fd-safer.c pipe-safer.c unistr/u8-mbtoucr.c unistr/u8-uctomb.c unistr/u8-uctomb-aux.c uniwidth/width.c unlinkdir.c userspec.c utimecmp.c utimens.c verror.c version-etc.c version-etc-fsf.c wctype-h.c write-any-file.c xmalloc.c xalloc-die.c xbinary-io.c xdectoimax.c xdectoumax.c xfts.c xgetcwd.c xgetgroups.c xgethostname.c xmemcoll.c xnanosleep.c xprintf.c xreadlink.c xsize.c xstriconv.c xstrndup.c xstrtod.c xstrtoimax.c xstrtol.c xstrtoul.c xstrtol-error.c xstrtold.c xstrtoumax.c xvasprintf.c xasprintf.c yesno.c asnprintf.c chdir-long.c fchmodat.c fclose.c fcntl.c fflush.c fpurge.c freadahead.c freadptr.c fseek.c fseeko.c fseterr.c fsusage.c fts.c getfilecon.c isapipe.c lchmod.c localtime-buffer.c mbrlen.c mbrtowc.c mknod.c mkstemp.c mktime.c mountlist.c nanosleep.c obstack.c printf-args.c printf-parse.c readutmp.c regex.c sig2str.c time_rz.c vasnprintf.c)
-    O="copy-acl.o set-acl.o acl-errno-valid.o acl-internal.o get-permissions.o set-permissions.o allocator.o areadlink.o areadlink-with-size.o areadlinkat.o argmatch.o argv-iter.o openat-proc.o backupfile.o backup-rename.o backupfile.o backup-find.o base32.o base64.o binary-io.o bitrotate.o buffer-lcm.o c-ctype.o c-strcasecmp.o c-strncasecmp.o c-strtod.o c-strtold.o canon-host.o canonicalize.o careadlinkat.o chmodat.o chownat.o cl-strtod.o cl-strtold.o cloexec.o close-stream.o closein.o closeout.o count-leading-zeros.o af_alg.o md5.o sha1.o sha256.o sha512.o cycle-check.o di-set.o diacrit.o opendir-safer.o dirname.o basename.o dirname-lgpl.o basename-lgpl.o stripslash.o dtoastr.o dtotimespec.o exclude.o exitfail.o fadvise.o creat-safer.o open-safer.o fd-hook.o fd-reopen.o fd-safer-flag.o dup-safer-flag.o fdutimensat.o file-has-acl.o file-set.o file-type.o filemode.o filenamecat.o filenamecat-lgpl.o filevercmp.o fopen-safer.o fprintftime.o freading.o freadseek.o freopen-safer.o ftoastr.o full-read.o full-write.o gethrxtime.o xtime.o getndelim2.o getprogname.o gettime.o getugroups.o hard-locale.o hash.o hash-pjw.o hash-triple.o heap.o human.o i-ring.o idcache.o ino-map.o imaxtostr.o inttostr.o offtostr.o uinttostr.o umaxtostr.o ldtoastr.o linebuffer.o localcharset.o glthread/lock.o long-options.o malloca.o math.o mbchar.o mbiter.o mbsalign.o mbscasecmp.o mbschr.o mbslen.o mbsstr.o mbswidth.o mbuiter.o memcasecmp.o memchr2.o memcmp2.o memcoll.o mgetgroups.o mkancesdirs.o dirchownmod.o mkdir-p.o modechange.o mpsort.o nproc.o nstrftime.o openat-die.o openat-safer.o opendirat.o parse-datetime.o physmem.o pipe2.o posixtm.o posixver.o printf-frexp.o printf-frexpl.o priv-set.o progname.o propername.o qcopy-acl.o qset-acl.o quotearg.o randint.o randperm.o randread.o rand-isaac.o read-file.o readtokens.o readtokens0.o renameatu.o root-dev-ino.o safe-read.o safe-write.o same.o save-cwd.o savedir.o savewd.o selinux-at.o se-context.o se-selinux.o setlocale_null.o settime.o sig-handler.o sockets.o stat-time.o statat.o mkstemp-safer.o striconv.o strnlen1.o strintcmp.o strnumcmp.o sys_socket.o tempname.o glthread/threadlib.o timespec.o glthread/tls.o trim.o u64.o unicodeio.o unistd.o dup-safer.o fd-safer.o pipe-safer.o unistr/u8-mbtoucr.o unistr/u8-uctomb.o unistr/u8-uctomb-aux.o uniwidth/width.o unlinkdir.o userspec.o utimecmp.o utimens.o verror.o version-etc.o version-etc-fsf.o wctype-h.o write-any-file.o xmalloc.o xalloc-die.o xbinary-io.o xdectoimax.o xdectoumax.o xfts.o xgetcwd.o xgetgroups.o xgethostname.o xmemcoll.o xnanosleep.o xprintf.o xreadlink.o xsize.o xstriconv.o xstrndup.o xstrtod.o xstrtoimax.o xstrtol.o xstrtoul.o xstrtol-error.o xstrtold.o xstrtoumax.o xvasprintf.o xasprintf.o yesno.o asnprintf.o chdir-long.o fchmodat.o fclose.o fcntl.o fflush.o fpurge.o freadahead.o freadptr.o fseek.o fseeko.o fseterr.o fsusage.o fts.o getfilecon.o isapipe.o lchmod.o localtime-buffer.o mbrlen.o mbrtowc.o mknod.o mkstemp.o mktime.o mountlist.o nanosleep.o obstack.o printf-args.o printf-parse.o readutmp.o regex.o sig2str.o time_rz.o vasnprintf.o"
-
-    for i in ${S[@]}; do
-        echo $i
-        o=$(echo $i | sed 's/\.c/\.o/');
-        echo $o;
-        gcc -I. -I./lib -Ilib -I./lib -g -O2 -c -o lib/${o} lib/${i}
-    done
-
-    cd ${SHELL_FOLDER}/lib;
-    ar cr libcoreutils.a ${O};
-}
-
-function MV() {
-    cd ${SHELL_FOLDER};
-    gcc -I./lib -c -o version.o version.c
-    ar cr libver.a version.o
-    gcc -I. -I./lib -g -O2 -c -o remove.o remove.c
-    gcc -I. -I./lib -g -O2 -c -o copy.o copy.c
-    gcc -I. -I./lib -g -O2 -c -o cp-hash.o cp-hash.c
-    gcc -I. -I./lib -g -O2 -c -o extent-scan.o extent-scan.c
-    gcc -I. -I./lib -g -O2 -c -o force-link.o force-link.c
-    gcc -I. -I./lib -g -O2 -c -o selinux.o selinux.c
-    gcc -I. -I./lib -g -O2 -c -o mv.o mv.c
-
-    gcc -g -O2 -Wl,--as-needed -o mv \
-        mv.o remove.o copy.o cp-hash.o extent-scan.o force-link.o selinux.o libver.a lib/libcoreutils.a lib/libcoreutils.a \
-       -lselinux -lacl -lattr -pthread  -lpcre2-8 -ldl -static
-    
-    mv ./mv rm_
-}
-
-
-
-init
-
-if test "$@" = "clean"; then
-    rm `find . \( -name "*.a" -o -name "*.o" \) | xargs `
-    rm rm_
-    exit 0;
-fi
-
-LIB
-MV

build_mv.txt

@@ -1,63 +0,0 @@
-
-
-# MV
-gcc -I. -I./lib -Ilib -I./lib -Isrc -I./src -g -O2 -MT src/mv.o -MD -MP -MF src/.deps/mv.Tpo -c -o src/mv.o src/mv.c
-gcc -g -O2 -Wl,--as-needed -o src/mv \
-    src/mv.o src/remove.o src/copy.o src/cp-hash.o src/extent-scan.o src/force-link.o src/selinux.o src/libver.a lib/libcoreutils.a lib/libcoreutils.a \
-    -lselinux -lacl -lattr -pthread  -lpcre2-8 -ldl -static
-
-
-# remove.o
-gcc -I. -I./lib -Ilib -I./lib -Isrc -I./src -g -O2 -MT src/remove.o -MD -MP -MF src/.deps/remove.Tpo -c -o src/remove.o src/remove.c
-
-# copy.o
-gcc -I. -I./lib -Ilib -I./lib -Isrc -I./src -g -O2 -MT src/copy.o -MD -MP -MF src/.deps/copy.Tpo -c -o src/copy.o src/copy.c
-
-# cp-hash.o
-gcc -I. -I./lib -Ilib -I./lib -Isrc -I./src -g -O2 -MT src/cp-hash.o -MD -MP -MF src/.deps/cp-hash.Tpo -c -o src/cp-hash.o src/cp-hash.c
-
-# extent-scan.o
-gcc -I. -I./lib -Ilib -I./lib -Isrc -I./src -g -O2 -MT src/extent-scan.o -MD -MP -MF src/.deps/extent-scan.Tpo -c -o src/extent-scan.o src/extent-scan.c
-
-# force-link.o
-gcc -I. -I./lib -Ilib -I./lib -Isrc -I./src -g -O2 -MT src/force-link.o -MD -MP -MF src/.deps/force-link.Tpo -c -o src/force-link.o src/force-link.c
-
-# selinux.o
-gcc -I. -I./lib -Ilib -I./lib -Isrc -I./src -g -O2 -MT src/selinux.o -MD -MP -MF src/.deps/selinux.Tpo -c -o src/selinux.o src/selinux.c
-
-# libver.a
-ar cr src/libver.a src/version.o
-
-# libcoreutils.a
-ar cr lib/libcoreutils.a lib/copy-acl.o lib/set-acl.o lib/acl-errno-valid.o lib/acl-internal.o lib/get-permissions.o lib/set-permissions.o \
-    lib/allocator.o lib/areadlink.o lib/areadlink-with-size.o lib/areadlinkat.o lib/argmatch.o lib/argv-iter.o lib/openat-proc.o lib/backupfile.o \
-    lib/backup-rename.o lib/backupfile.o lib/backup-find.o lib/base32.o lib/base64.o lib/binary-io.o lib/bitrotate.o lib/buffer-lcm.o lib/c-ctype.o \
-    lib/c-strcasecmp.o lib/c-strncasecmp.o lib/c-strtod.o lib/c-strtold.o lib/canon-host.o lib/canonicalize.o lib/careadlinkat.o lib/chmodat.o lib/chownat.o \
-    lib/cl-strtod.o lib/cl-strtold.o lib/cloexec.o lib/close-stream.o lib/closein.o lib/closeout.o lib/count-leading-zeros.o lib/af_alg.o lib/md5.o lib/sha1.o \
-    lib/sha256.o lib/sha512.o lib/cycle-check.o lib/di-set.o lib/diacrit.o lib/opendir-safer.o lib/dirname.o lib/basename.o lib/dirname-lgpl.o lib/basename-lgpl.o \
-    lib/stripslash.o lib/dtoastr.o lib/dtotimespec.o lib/exclude.o lib/exitfail.o lib/fadvise.o lib/creat-safer.o lib/open-safer.o lib/fd-hook.o lib/fd-reopen.o \
-    lib/fd-safer-flag.o lib/dup-safer-flag.o lib/fdutimensat.o lib/file-has-acl.o lib/file-set.o lib/file-type.o lib/filemode.o lib/filenamecat.o lib/filenamecat-lgpl.o \
-    lib/filevercmp.o lib/fopen-safer.o lib/fprintftime.o lib/freading.o lib/freadseek.o lib/freopen-safer.o lib/ftoastr.o lib/full-read.o lib/full-write.o lib/gethrxtime.o \
-    lib/xtime.o lib/getndelim2.o lib/getprogname.o lib/gettime.o lib/getugroups.o lib/hard-locale.o lib/hash.o lib/hash-pjw.o lib/hash-triple.o lib/heap.o lib/human.o lib/i-ring.o \
-    lib/idcache.o lib/ino-map.o lib/imaxtostr.o lib/inttostr.o lib/offtostr.o lib/uinttostr.o lib/umaxtostr.o lib/ldtoastr.o lib/linebuffer.o lib/localcharset.o \
-    lib/glthread/lock.o lib/long-options.o lib/malloca.o lib/math.o lib/mbchar.o lib/mbiter.o lib/mbsalign.o lib/mbscasecmp.o lib/mbschr.o lib/mbslen.o lib/mbsstr.o \
-    lib/mbswidth.o lib/mbuiter.o lib/memcasecmp.o lib/memchr2.o lib/memcmp2.o lib/memcoll.o lib/mgetgroups.o lib/mkancesdirs.o lib/dirchownmod.o lib/mkdir-p.o lib/modechange.o \
-    lib/mpsort.o lib/nproc.o lib/nstrftime.o lib/openat-die.o lib/openat-safer.o lib/opendirat.o lib/parse-datetime.o lib/physmem.o lib/pipe2.o lib/posixtm.o lib/posixver.o \
-    lib/printf-frexp.o lib/printf-frexpl.o lib/priv-set.o lib/progname.o lib/propername.o lib/qcopy-acl.o lib/qset-acl.o lib/quotearg.o lib/randint.o lib/randperm.o \
-    lib/randread.o lib/rand-isaac.o lib/read-file.o lib/readtokens.o lib/readtokens0.o lib/renameatu.o lib/root-dev-ino.o lib/safe-read.o lib/safe-write.o lib/same.o \
-    lib/save-cwd.o lib/savedir.o lib/savewd.o lib/selinux-at.o lib/se-context.o lib/se-selinux.o lib/setlocale_null.o lib/settime.o lib/sig-handler.o lib/sockets.o \
-    lib/stat-time.o lib/statat.o lib/mkstemp-safer.o lib/striconv.o lib/strnlen1.o lib/strintcmp.o lib/strnumcmp.o lib/sys_socket.o lib/tempname.o lib/glthread/threadlib.o \
-    lib/timespec.o lib/glthread/tls.o lib/trim.o lib/u64.o lib/unicodeio.o lib/unistd.o lib/dup-safer.o lib/fd-safer.o lib/pipe-safer.o lib/unistr/u8-mbtoucr.o \
-    lib/unistr/u8-uctomb.o lib/unistr/u8-uctomb-aux.o lib/uniwidth/width.o lib/unlinkdir.o lib/userspec.o lib/utimecmp.o lib/utimens.o lib/verror.o lib/version-etc.o \
-    lib/version-etc-fsf.o lib/wctype-h.o lib/write-any-file.o lib/xmalloc.o lib/xalloc-die.o lib/xbinary-io.o lib/xdectoimax.o lib/xdectoumax.o lib/xfts.o lib/xgetcwd.o \
-    lib/xgetgroups.o lib/xgethostname.o lib/xmemcoll.o lib/xnanosleep.o lib/xprintf.o lib/xreadlink.o lib/xsize.o lib/xstriconv.o lib/xstrndup.o lib/xstrtod.o \
-    lib/xstrtoimax.o lib/xstrtol.o lib/xstrtoul.o lib/xstrtol-error.o lib/xstrtold.o lib/xstrtoumax.o lib/xvasprintf.o lib/xasprintf.o lib/yesno.o \
-    lib/asnprintf.o lib/chdir-long.o lib/fchmodat.o lib/fclose.o lib/fcntl.o lib/fflush.o lib/fpurge.o lib/freadahead.o lib/freadptr.o lib/fseek.o \
-    lib/fseeko.o lib/fseterr.o lib/fsusage.o lib/fts.o lib/getfilecon.o lib/isapipe.o lib/lchmod.o lib/localtime-buffer.o lib/mbrlen.o lib/mbrtowc.o \
-    lib/mknod.o lib/mkstemp.o lib/mktime.o lib/mountlist.o lib/nanosleep.o lib/obstack.o lib/printf-args.o lib/printf-parse.o lib/readutmp.o lib/regex.o \
-    lib/sig2str.o lib/time_rz.o lib/vasnprintf.o
-    
-
-
-
-

extent-scan.c

@@ -1,228 +0,0 @@
-/* extent-scan.c -- core functions for scanning extents
-   Copyright (C) 2010-2020 Free Software Foundation, Inc.
-
-   This program is free software: you can redistribute it and/or modify
-   it under the terms of the GNU General Public License as published by
-   the Free Software Foundation, either version 3 of the License, or
-   (at your option) any later version.
-
-   This program is distributed in the hope that it will be useful,
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-   GNU General Public License for more details.
-
-   You should have received a copy of the GNU General Public License
-   along with this program.  If not, see <https://www.gnu.org/licenses/>.
-
-   Written by Jie Liu (jeff.liu@oracle.com).  */
-
-#include <config.h>
-#include <sys/types.h>
-#include <sys/ioctl.h>
-#include <sys/utsname.h>
-#include <assert.h>
-
-#include "system.h"
-#include "extent-scan.h"
-#include "fiemap.h"
-#include "xstrtol.h"
-
-
-/* Work around Linux kernel issues on BTRFS and EXT4.  */
-static bool
-extent_need_sync (void)
-{
-  /* For now always return true, to be on the safe side.
-     If/when FIEMAP semantics are well defined (before SEEK_HOLE support
-     is usable) and kernels implementing them are in use, we may relax
-     this once again.  */
-  return true;
-
-#if FIEMAP_BEHAVIOR_IS_DEFINED_AND_USABLE
-  static int need_sync = -1;
-
-  if (need_sync == -1)
-    {
-      struct utsname name;
-      need_sync = 0; /* No workaround by default.  */
-
-# ifdef __linux__
-      if (uname (&name) != -1 && STRNCMP_LIT (name.release, "2.6.") == 0)
-        {
-           unsigned long val;
-           if (xstrtoul (name.release + 4, NULL, 10, &val, NULL) == LONGINT_OK)
-             {
-               if (val < 39)
-                 need_sync = 1;
-             }
-        }
-# endif
-    }
-
-  return need_sync;
-#endif
-}
-
-/* Allocate space for struct extent_scan, initialize the entries if
-   necessary and return it as the input argument of extent_scan_read().  */
-extern void
-extent_scan_init (int src_fd, struct extent_scan *scan)
-{
-  scan->fd = src_fd;
-  scan->ei_count = 0;
-  scan->ext_info = NULL;
-  scan->scan_start = 0;
-  scan->initial_scan_failed = false;
-  scan->hit_final_extent = false;
-  scan->fm_flags = extent_need_sync () ? FIEMAP_FLAG_SYNC : 0;
-}
-
-#ifdef __linux__
-# ifndef FS_IOC_FIEMAP
-#  define FS_IOC_FIEMAP _IOWR ('f', 11, struct fiemap)
-# endif
-/* Call ioctl(2) with FS_IOC_FIEMAP (available in linux 2.6.27) to
-   obtain a map of file extents excluding holes.  */
-extern bool
-extent_scan_read (struct extent_scan *scan)
-{
-  unsigned int si = 0;
-  struct extent_info *last_ei = scan->ext_info;
-
-  while (true)
-    {
-      union { struct fiemap f; char c[4096]; } fiemap_buf;
-      struct fiemap *fiemap = &fiemap_buf.f;
-      struct fiemap_extent *fm_extents = &fiemap->fm_extents[0];
-      enum { headersize = offsetof (struct fiemap, fm_extents) };
-      enum { count = (sizeof fiemap_buf - headersize) / sizeof *fm_extents };
-      verify (count > 1);
-
-      /* This is required at least to initialize fiemap->fm_start,
-         but also serves (in mid 2010) to appease valgrind, which
-         appears not to know the semantics of the FIEMAP ioctl. */
-      memset (&fiemap_buf, 0, sizeof fiemap_buf);
-
-      fiemap->fm_start = scan->scan_start;
-      fiemap->fm_flags = scan->fm_flags;
-      fiemap->fm_extent_count = count;
-      fiemap->fm_length = FIEMAP_MAX_OFFSET - scan->scan_start;
-
-      /* Fall back to the standard copy if call ioctl(2) failed for
-         the first time.  */
-      if (ioctl (scan->fd, FS_IOC_FIEMAP, fiemap) < 0)
-        {
-          if (scan->scan_start == 0)
-            scan->initial_scan_failed = true;
-          return false;
-        }
-
-      /* If 0 extents are returned, then no more scans are needed.  */
-      if (fiemap->fm_mapped_extents == 0)
-        {
-          scan->hit_final_extent = true;
-          return scan->scan_start != 0;
-        }
-
-      assert (scan->ei_count <= SIZE_MAX - fiemap->fm_mapped_extents);
-      scan->ei_count += fiemap->fm_mapped_extents;
-      {
-        /* last_ei points into a buffer that may be freed via xnrealloc.
-           Record its offset and adjust after allocation.  */
-        size_t prev_idx = last_ei - scan->ext_info;
-        scan->ext_info = xnrealloc (scan->ext_info, scan->ei_count,
-                                    sizeof (struct extent_info));
-        last_ei = scan->ext_info + prev_idx;
-      }
-
-      unsigned int i = 0;
-      for (i = 0; i < fiemap->fm_mapped_extents; i++)
-        {
-          assert (fm_extents[i].fe_logical
-                  <= OFF_T_MAX - fm_extents[i].fe_length);
-
-          verify (sizeof last_ei->ext_flags >= sizeof fm_extents->fe_flags);
-
-          if (si && last_ei->ext_flags
-              == (fm_extents[i].fe_flags & ~FIEMAP_EXTENT_LAST)
-              && (last_ei->ext_logical + last_ei->ext_length
-                  == fm_extents[i].fe_logical))
-            {
-              /* Merge previous with last.  */
-              last_ei->ext_length += fm_extents[i].fe_length;
-              /* Copy flags in case different.  */
-              last_ei->ext_flags = fm_extents[i].fe_flags;
-            }
-          else if ((si == 0 && scan->scan_start > fm_extents[i].fe_logical)
-                   || (si && (last_ei->ext_logical + last_ei->ext_length
-                              > fm_extents[i].fe_logical)))
-            {
-              /* BTRFS before 2.6.38 could return overlapping extents
-                 for sparse files.  We adjust the returned extents
-                 rather than failing, as otherwise it would be inefficient
-                 to detect this on the initial scan.  */
-              uint64_t new_logical;
-              uint64_t length_adjust;
-              if (si == 0)
-                new_logical = scan->scan_start;
-              else
-                {
-                  /* We could return here if scan->scan_start == 0
-                     but don't so as to minimize special cases.  */
-                  new_logical = last_ei->ext_logical + last_ei->ext_length;
-                }
-              length_adjust = new_logical - fm_extents[i].fe_logical;
-              /* If an extent is contained within the previous one, fail.  */
-              if (length_adjust < fm_extents[i].fe_length)
-                {
-                  if (scan->scan_start == 0)
-                    scan->initial_scan_failed = true;
-                  return false;
-                }
-              fm_extents[i].fe_logical = new_logical;
-              fm_extents[i].fe_length -= length_adjust;
-              /* Process the adjusted extent again.  */
-              i--;
-              continue;
-            }
-          else
-            {
-              last_ei = scan->ext_info + si;
-              last_ei->ext_logical = fm_extents[i].fe_logical;
-              last_ei->ext_length = fm_extents[i].fe_length;
-              last_ei->ext_flags = fm_extents[i].fe_flags;
-              si++;
-            }
-        }
-
-      if (last_ei->ext_flags & FIEMAP_EXTENT_LAST)
-        scan->hit_final_extent = true;
-
-      /* If we have enough extents, discard the last as it might
-         be merged with one from the next scan.  */
-      if (si > count && !scan->hit_final_extent)
-        last_ei = scan->ext_info + --si - 1;
-
-      /* We don't bother reallocating any trailing slots.  */
-      scan->ei_count = si;
-
-      if (scan->hit_final_extent)
-        break;
-      else
-        scan->scan_start = last_ei->ext_logical + last_ei->ext_length;
-
-      if (si >= count)
-        break;
-    }
-
-  return true;
-}
-#else
-extern bool
-extent_scan_read (struct extent_scan *scan _GL_UNUSED)
-{
-  scan->initial_scan_failed = true;
-  errno = ENOTSUP;
-  return false;
-}
-#endif

extent-scan.h

@@ -1,73 +0,0 @@
-/* core functions for efficient reading sparse files
-   Copyright (C) 2010-2020 Free Software Foundation, Inc.
-
-   This program is free software: you can redistribute it and/or modify
-   it under the terms of the GNU General Public License as published by
-   the Free Software Foundation, either version 3 of the License, or
-   (at your option) any later version.
-
-   This program is distributed in the hope that it will be useful,
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-   GNU General Public License for more details.
-
-   You should have received a copy of the GNU General Public License
-   along with this program.  If not, see <https://www.gnu.org/licenses/>.
-
-   Written by Jie Liu (jeff.liu@oracle.com).  */
-
-#ifndef EXTENT_SCAN_H
-# define EXTENT_SCAN_H
-
-/* Structure used to store information of each extent.  */
-struct extent_info
-{
-  /* Logical offset of an extent.  */
-  off_t ext_logical;
-
-  /* Extent length.  */
-  off_t ext_length;
-
-  /* Extent flags, use it for FIEMAP only, or set it to zero.  */
-  unsigned int ext_flags;
-};
-
-/* Structure used to reserve extent scan information per file.  */
-struct extent_scan
-{
-  /* File descriptor of extent scan run against.  */
-  int fd;
-
-  /* Next scan start offset.  */
-  off_t scan_start;
-
-  /* Flags to use for scan.  */
-  unsigned int fm_flags;
-
-  /* How many extent info returned for a scan.  */
-  size_t ei_count;
-
-  /* If true, fall back to a normal copy, either set by the
-     failure of ioctl(2) for FIEMAP or lseek(2) with SEEK_DATA.  */
-  bool initial_scan_failed;
-
-  /* If true, the total extent scan per file has been finished.  */
-  bool hit_final_extent;
-
-  /* Extent information: a malloc'd array of ei_count structs.  */
-  struct extent_info *ext_info;
-};
-
-void extent_scan_init (int src_fd, struct extent_scan *scan);
-
-bool extent_scan_read (struct extent_scan *scan);
-
-static inline void
-extent_scan_free (struct extent_scan *scan)
-{
-  free (scan->ext_info);
-  scan->ext_info = NULL;
-  scan->ei_count = 0;
-}
-
-#endif /* EXTENT_SCAN_H */

fiemap.h

@@ -1,102 +0,0 @@
-/* FS_IOC_FIEMAP ioctl infrastructure.
-   Some portions copyright (C) 2007 Cluster File Systems, Inc
-   Authors: Mark Fasheh <mfasheh@suse.com>
-            Kalpak Shah <kalpak.shah@sun.com>
-            Andreas Dilger <adilger@sun.com>.  */
-
-/* Copy from kernel, modified to respect GNU code style by Jie Liu.  */
-
-#ifndef _LINUX_FIEMAP_H
-# define _LINUX_FIEMAP_H
-
-# include <stdint.h>
-
-struct fiemap_extent
-{
-  /* Logical offset in bytes for the start of the extent
-     from the beginning of the file.  */
-  uint64_t fe_logical;
-
-  /* Physical offset in bytes for the start of the extent
-     from the beginning of the disk.  */
-  uint64_t fe_physical;
-
-  /* Length in bytes for this extent.  */
-  uint64_t fe_length;
-
-  uint64_t fe_reserved64[2];
-
-  /* FIEMAP_EXTENT_* flags for this extent.  */
-  uint32_t fe_flags;
-
-  uint32_t fe_reserved[3];
-};
-
-struct fiemap
-{
-  /* Logical offset(inclusive) at which to start mapping(in).  */
-  uint64_t fm_start;
-
-  /* Logical length of mapping which userspace wants(in).  */
-  uint64_t fm_length;
-
-  /* FIEMAP_FLAG_* flags for request(in/out).  */
-  uint32_t fm_flags;
-
-  /* Number of extents that were mapped(out).  */
-  uint32_t fm_mapped_extents;
-
-  /* Size of fm_extents array(in).  */
-  uint32_t fm_extent_count;
-
-  uint32_t fm_reserved;
-
-  /* Array of mapped extents(out).  */
-  struct fiemap_extent fm_extents[FLEXIBLE_ARRAY_MEMBER];
-};
-
-/* The maximum offset can be mapped for a file.  */
-# define FIEMAP_MAX_OFFSET       (~0ULL)
-
-/* Sync file data before map.  */
-# define FIEMAP_FLAG_SYNC        0x00000001
-
-/* Map extented attribute tree.  */
-# define FIEMAP_FLAG_XATTR       0x00000002
-
-# define FIEMAP_FLAGS_COMPAT     (FIEMAP_FLAG_SYNC | FIEMAP_FLAG_XATTR)
-
-/* Last extent in file.  */
-# define FIEMAP_EXTENT_LAST              0x00000001
-
-/* Data location unknown.  */
-# define FIEMAP_EXTENT_UNKNOWN           0x00000002
-
-/* Location still pending, Sets EXTENT_UNKNOWN.  */
-# define FIEMAP_EXTENT_DELALLOC          0x00000004
-
-/* Data cannot be read while fs is unmounted.  */
-# define FIEMAP_EXTENT_ENCODED           0x00000008
-
-/* Data is encrypted by fs.  Sets EXTENT_NO_BYPASS.  */
-# define FIEMAP_EXTENT_DATA_ENCRYPTED    0x00000080
-
-/* Extent offsets may not be block aligned.  */
-# define FIEMAP_EXTENT_NOT_ALIGNED       0x00000100
-
-/* Data mixed with metadata.  Sets EXTENT_NOT_ALIGNED.  */
-# define FIEMAP_EXTENT_DATA_INLINE       0x00000200
-
-/* Multiple files in block.  Set EXTENT_NOT_ALIGNED.  */
-# define FIEMAP_EXTENT_DATA_TAIL         0x00000400
-
-/* Space allocated, but not data (i.e., zero).  */
-# define FIEMAP_EXTENT_UNWRITTEN         0x00000800
-
-/* File does not natively support extents.  Result merged for efficiency.  */
-# define FIEMAP_EXTENT_MERGED		0x00001000
-
-/* Space shared with other files.  */
-# define FIEMAP_EXTENT_SHARED            0x00002000
-
-#endif

lib/_Noreturn.h

@@ -1,17 +1,17 @@
 /* A C macro for declaring that a function does not return.
-   Copyright (C) 2011-2020 Free Software Foundation, Inc.
+   Copyright (C) 2011-2022 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
+   under the terms of the GNU Lesser General Public License as published
+   by the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.
 
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-   General Public License for more details.
+   Lesser General Public License for more details.
 
-   You should have received a copy of the GNU General Public License
+   You should have received a copy of the GNU Lesser General Public License
    along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
 
 #ifndef _Noreturn
@@ -26,14 +26,16 @@
        AIX system header files and several gnulib header files use precisely
        this syntax with 'extern'.  */
 #  define _Noreturn [[noreturn]]
-# elif ((!defined __cplusplus || defined __clang__)                     \
-        && (201112 <= (defined __STDC_VERSION__ ? __STDC_VERSION__ : 0)  \
-            || 4 < __GNUC__ + (7 <= __GNUC_MINOR__) \
-            || (defined __apple_build_version__ \
-                ? 6000000 <= __apple_build_version__ \
-                : 3 < __clang_major__ + (5 <= __clang_minor__))))
+# elif ((!defined __cplusplus || defined __clang__) \
+        && (201112 <= (defined __STDC_VERSION__ ? __STDC_VERSION__ : 0) \
+            || (!defined __STRICT_ANSI__ \
+                && (4 < __GNUC__ + (7 <= __GNUC_MINOR__) \
+                    || (defined __apple_build_version__ \
+                        ? 6000000 <= __apple_build_version__ \
+                        : 3 < __clang_major__ + (5 <= __clang_minor__))))))
    /* _Noreturn works as-is.  */
-# elif 2 < __GNUC__ + (8 <= __GNUC_MINOR__) || 0x5110 <= __SUNPRO_C
+# elif (2 < __GNUC__ + (8 <= __GNUC_MINOR__) || defined __clang__ \
+        || 0x5110 <= __SUNPRO_C)
 #  define _Noreturn __attribute__ ((__noreturn__))
 # elif 1200 <= (defined _MSC_VER ? _MSC_VER : 0)
 #  define _Noreturn __declspec (noreturn)

lib/acl-errno-valid.c

@@ -1,10 +1,10 @@
 /* Test whether ACLs are well supported on this system.
 
-   Copyright 2013-2020 Free Software Foundation, Inc.
+   Copyright 2013-2022 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
-   the Free Software Foundation; either version 3 of the License, or
+   the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.
 
    This program is distributed in the hope that it will be useful,

lib/acl-internal.c

@@ -1,10 +1,10 @@
 /* Test whether a file has a nontrivial ACL.  -*- coding: utf-8 -*-
 
-   Copyright (C) 2002-2003, 2005-2020 Free Software Foundation, Inc.
+   Copyright (C) 2002-2003, 2005-2022 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
-   the Free Software Foundation; either version 3 of the License, or
+   the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.
 
    This program is distributed in the hope that it will be useful,

lib/acl-internal.h

@@ -1,10 +1,10 @@
 /* Internal implementation of access control lists.  -*- coding: utf-8 -*-
 
-   Copyright (C) 2002-2003, 2005-2020 Free Software Foundation, Inc.
+   Copyright (C) 2002-2003, 2005-2022 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
-   the Free Software Foundation; either version 3 of the License, or
+   the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.
 
    This program is distributed in the hope that it will be useful,

lib/acl.h

@@ -1,10 +1,10 @@
 /* acl.c - access control lists
 
-   Copyright (C) 2002, 2008-2020 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2008-2022 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
-   the Free Software Foundation; either version 3 of the License, or
+   the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.
 
    This program is distributed in the hope that it will be useful,

lib/acl_entries.c

@@ -1,10 +1,10 @@
 /* Return the number of entries in an ACL.
 
-   Copyright (C) 2002-2003, 2005-2020 Free Software Foundation, Inc.
+   Copyright (C) 2002-2003, 2005-2022 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
-   the Free Software Foundation; either version 3 of the License, or
+   the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.
 
    This program is distributed in the hope that it will be useful,

lib/af_alg.c

@@ -1,18 +1,18 @@
 /* af_alg.c - Compute message digests from file streams and buffers.
-   Copyright (C) 2018-2020 Free Software Foundation, Inc.
+   Copyright (C) 2018-2022 Free Software Foundation, Inc.
 
-   This program is free software; you can redistribute it and/or modify it
-   under the terms of the GNU General Public License as published by the
-   Free Software Foundation; either version 3, or (at your option) any
-   later version.
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
 
-   This program is distributed in the hope that it will be useful,
+   This file is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-   GNU General Public License for more details.
+   GNU Lesser General Public License for more details.
 
-   You should have received a copy of the GNU General Public License
-   along with this program; if not, see <https://www.gnu.org/licenses/>.  */
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
 
 /* Written by Matteo Croce <mcroce@redhat.com>, 2018.  */
 

lib/af_alg.h

@@ -1,18 +1,18 @@
 /* af_alg.h - Compute message digests from file streams and buffers.
-   Copyright (C) 2018-2020 Free Software Foundation, Inc.
+   Copyright (C) 2018-2022 Free Software Foundation, Inc.
 
-   This program is free software; you can redistribute it and/or modify it
-   under the terms of the GNU General Public License as published by the
-   Free Software Foundation; either version 3, or (at your option) any
-   later version.
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
 
-   This program is distributed in the hope that it will be useful,
+   This file is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-   GNU General Public License for more details.
+   GNU Lesser General Public License for more details.
 
-   You should have received a copy of the GNU General Public License
-   along with this program; if not, see <https://www.gnu.org/licenses/>.  */
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
 
 /* Written by Matteo Croce <mcroce@redhat.com>, 2018.
    Documentation by Bruno Haible <bruno@clisp.org>, 2018.  */

lib/alignalloc.c

@@ -0,0 +1,121 @@
+/* aligned memory allocation
+
+   Copyright 2022 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation, either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Paul Eggert.  */
+
+#include <config.h>
+
+#define ALIGNALLOC_INLINE _GL_EXTERN_INLINE
+#include "alignalloc.h"
+
+#include <limits.h>
+#include <stdalign.h>
+#include <stdint.h>
+#include "intprops.h"
+#include "verify.h"
+
+#if !ALIGNALLOC_VIA_ALIGNED_ALLOC
+# if HAVE_POSIX_MEMALIGN
+
+/* posix_memalign requires the alignment to be a power-of-two multiple of
+   sizeof (void *), whereas alignalloc requires it to be a power of two.
+   To make it OK for the latter to call the former, check that
+   sizeof (void *) is a power of two, which is true on all known platforms.
+   This check is here rather than in alignalloc.h to save the compiler
+   the trouble of checking it each time alignalloc.h is included.  */
+verify (! (sizeof (void *) & (sizeof (void *) - 1)));
+
+# else /* !HAVE_POSIX_MEMALIGN */
+
+/* Return P aligned down to ALIGNMENT, which should be a power of two.  */
+
+static void *
+align_down (void *p, idx_t alignment)
+{
+  char *c = p;
+  return c - ((uintptr_t) p & (alignment - 1));
+}
+
+/* If alignalloc returned R and the base of the originally-allocated
+   storage is less than R - UCHAR_MAX, return the address of a pointer
+   holding the base of the originally-allocated storage.  */
+
+static void **
+address_of_pointer_to_malloced (unsigned char *r)
+{
+  /* The pointer P is located at the highest address A such that A is
+     aligned for pointers, and A + sizeof P < R so that there is room
+     for a 0 byte at R - 1.  This approach assumes UCHAR_MAX is large
+     enough so that there is room for P; although true on all
+     plausible platforms, check the assumption to be safe.  */
+  verify (sizeof (void *) + alignof (void *) - 1 <= UCHAR_MAX);
+
+  return align_down (r - 1 - sizeof (void *), alignof (void *));
+}
+
+/* Return an ALIGNMENT-aligned pointer to new storage of size SIZE,
+   or a null pointer (setting errno) if memory is exhausted.
+   ALIGNMENT must be a power of two.
+   If SIZE is zero, on success return a unique pointer each time.
+   To free storage later, call alignfree.  */
+
+void *
+alignalloc (idx_t alignment, idx_t size)
+{
+  /* malloc (ALIGNMENT + SIZE); if it succeeds, there must be at least
+     one byte available before the returned pointer.  It's OK if
+     ALIGNMENT + SIZE fits in size_t but not idx_t.  */
+
+  size_t malloc_size;
+  unsigned char *q;
+  if (INT_ADD_WRAPV (size, alignment, &malloc_size)
+      || ! (q = malloc (malloc_size)))
+    {
+      errno = ENOMEM;
+      return NULL;
+    }
+
+  unsigned char *r = align_down (q + alignment, alignment);
+  idx_t offset = r - q;
+
+  if (offset <= UCHAR_MAX)
+    r[-1] = offset;
+  else
+    {
+      r[-1] = 0;
+      *address_of_pointer_to_malloced (r) = q;
+    }
+
+  return r;
+}
+
+/* Free storage allocated via alignalloc.  Do nothing if PTR is null.  */
+
+void
+alignfree (void *ptr)
+{
+  if (ptr)
+    {
+      unsigned char *r = ptr;
+      unsigned char offset = r[-1];
+      void *q = offset ? r - offset : *address_of_pointer_to_malloced (r);
+      free (q);
+    }
+}
+
+# endif /* ! HAVE_POSIX_MEMALIGN */
+#endif /* ! ALIGNALLOC_VIA_ALIGNED_ALLOC */

lib/alignalloc.h

@@ -0,0 +1,113 @@
+/* aligned memory allocation
+
+   Copyright 2022 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation, either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Paul Eggert.  */
+
+#ifndef ALIGNALLOC_H_
+#define ALIGNALLOC_H_
+
+#include <errno.h>
+#include <stdlib.h>
+#include "idx.h"
+
+#ifndef _GL_INLINE_HEADER_BEGIN
+ #error "Please include config.h first."
+#endif
+_GL_INLINE_HEADER_BEGIN
+#ifndef ALIGNALLOC_INLINE
+# define ALIGNALLOC_INLINE _GL_INLINE
+#endif
+
+/* Whether aligned_alloc supports any power-of-two alignment,
+   returns a nonnull pointer for size-zero allocations,
+   and sets errno on failure.  */
+#if 2 < __GLIBC__ + (15 <= __GLIBC_MINOR__)
+# define ALIGNALLOC_VIA_ALIGNED_ALLOC 1
+#else
+# define ALIGNALLOC_VIA_ALIGNED_ALLOC 0
+#endif
+
+/* Work around AddressSanitizer bug.
+   https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104262
+   https://lists.llvm.org/pipermail/llvm-commits/Week-of-Mon-20220124/1001910.html
+   */
+#ifdef __SANITIZE_ADDRESS__
+# undef ALIGNALLOC_VIA_ALIGNED_ALLOC
+# define ALIGNALLOC_VIA_ALIGNED_ALLOC 0
+#endif
+#ifdef __has_feature
+# if __has_feature (address_sanitizer)
+#  undef ALIGNALLOC_VIA_ALIGNED_ALLOC
+#  define ALIGNALLOC_VIA_ALIGNED_ALLOC 0
+# endif
+#endif
+
+#if ALIGNALLOC_VIA_ALIGNED_ALLOC || HAVE_POSIX_MEMALIGN
+
+/* Free storage allocated via alignalloc.  Do nothing if PTR is null.  */
+
+ALIGNALLOC_INLINE void
+alignfree (void *ptr)
+{
+  free (ptr);
+}
+
+/* Return an ALIGNMENT-aligned pointer to new storage of size SIZE,
+   or a null pointer (setting errno) if memory is exhausted.
+   ALIGNMENT must be a power of two.
+   If SIZE is zero, on success return a unique pointer each time.
+   To free storage later, call alignfree.  */
+
+ALIGNALLOC_INLINE
+_GL_ATTRIBUTE_MALLOC _GL_ATTRIBUTE_ALLOC_SIZE ((2))
+/* _GL_ATTRIBUTE_DEALLOC (alignfree, 1) */
+void *
+alignalloc (idx_t alignment, idx_t size)
+{
+  if ((size_t) -1 < alignment)
+    alignment = (size_t) -1;
+  if ((size_t) -1 < size)
+    size = (size_t) -1;
+
+# if ALIGNALLOC_VIA_ALIGNED_ALLOC
+  return aligned_alloc (alignment, size);
+# else
+  void *ptr = NULL;
+  if (alignment < sizeof (void *))
+    alignment = sizeof (void *);
+  errno = posix_memalign (&ptr, alignment, size | !size);
+  return ptr;
+# endif
+}
+
+#else /* ! (ALIGNALLOC_VIA_ALIGNED_ALLOC || HAVE_POSIX_MEMALIGN) */
+
+void alignfree (void *);
+void *alignalloc (idx_t, idx_t)
+  _GL_ATTRIBUTE_MALLOC _GL_ATTRIBUTE_ALLOC_SIZE ((2))
+  _GL_ATTRIBUTE_DEALLOC (alignfree, 1);
+
+#endif
+
+/* Like alignalloc, but die instead of returning a null pointer.  */
+void *xalignalloc (idx_t, idx_t)
+  _GL_ATTRIBUTE_MALLOC _GL_ATTRIBUTE_ALLOC_SIZE ((2))
+  _GL_ATTRIBUTE_RETURNS_NONNULL /* _GL_ATTRIBUTE_DEALLOC (alignfree, 1) */;
+
+_GL_INLINE_HEADER_END
+
+#endif /* !ALIGNALLOC_H_ */

lib/alignof.h

@@ -1,18 +1,18 @@
 /* Determine alignment of types.
-   Copyright (C) 2003-2004, 2006, 2009-2020 Free Software Foundation, Inc.
+   Copyright (C) 2003-2004, 2006, 2009-2022 Free Software Foundation, Inc.
 
-   This program is free software; you can redistribute it and/or modify
-   it under the terms of the GNU General Public License as published by
-   the Free Software Foundation; either version 3, or (at your option)
-   any later version.
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
 
-   This program is distributed in the hope that it will be useful,
+   This file is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-   GNU General Public License for more details.
+   GNU Lesser General Public License for more details.
 
-   You should have received a copy of the GNU General Public License
-   along with this program; if not, see <https://www.gnu.org/licenses/>.  */
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
 
 #ifndef _ALIGNOF_H
 #define _ALIGNOF_H
@@ -36,12 +36,14 @@
 /* alignof_type (TYPE)
    Determine the good alignment of an object of the given type at compile time.
    Note that this is not necessarily the same as alignof_slot(type).
-   For example, with GNU C on x86 platforms: alignof_type(double) = 8, but
+   For example, with GNU C on x86 platforms and with clang on Linux/x86:
+   alignof_type(long long) = 8, but alignof_slot(long long) = 4.
+   And alignof_type(double) = 8, but
    - when -malign-double is not specified:  alignof_slot(double) = 4,
    - when -malign-double is specified:      alignof_slot(double) = 8.
    Note: The result cannot be used as a value for an 'enum' constant,
    due to bugs in HP-UX 10.20 cc and AIX 3.2.5 xlc.  */
-#if defined __GNUC__ || defined __IBM__ALIGNOF__
+#if defined __GNUC__ || defined __clang__ || defined __IBM__ALIGNOF__
 # define alignof_type __alignof__
 #else
 # define alignof_type alignof_slot

lib/alloca.c

@@ -1,5 +1,7 @@
 /* alloca.c -- allocate automatically reclaimed memory
-   (Mostly) portable public-domain implementation -- D A Gwyn
+   This file is in the public domain.  */
+
+/* (Mostly) portable implementation -- D A Gwyn
 
    This implementation of the PWB library alloca function,
    which is used to allocate space off the run-time stack so
@@ -39,8 +41,8 @@
 # define memory_full() abort ()
 #endif
 
-/* If compiling with GCC 2, this file's not needed.  */
-#if !defined (__GNUC__) || __GNUC__ < 2
+/* If compiling with GCC or clang, this file is not needed.  */
+#if !(defined __GNUC__ || defined __clang__)
 
 /* If someone has defined alloca as a macro,
    there must be some other way alloca is supposed to work.  */
@@ -62,16 +64,6 @@ lose
 #   endif /* static */
 #  endif /* emacs */
 
-/* If your stack is a linked list of frames, you have to
-   provide an "address metric" ADDRESS_FUNCTION macro.  */
-
-#  if defined (CRAY) && defined (CRAY_STACKSEG_END)
-long i00afunc ();
-#   define ADDRESS_FUNCTION(arg) (char *) i00afunc (&(arg))
-#  else
-#   define ADDRESS_FUNCTION(arg) &(arg)
-#  endif
-
 /* Define STACK_DIRECTION if you know the direction of stack
    growth for your system; otherwise it will be automatically
    deduced at run-time.
@@ -140,7 +132,7 @@ void *
 alloca (size_t size)
 {
   auto char probe;              /* Probes stack depth: */
-  register char *depth = ADDRESS_FUNCTION (probe);
+  register char *depth = &probe;
 
 #  if STACK_DIRECTION == 0
   if (STACK_DIR == 0)           /* Unknown growth direction.  */
@@ -206,273 +198,5 @@ alloca (size_t size)
   }
 }
 
-#  if defined (CRAY) && defined (CRAY_STACKSEG_END)
-
-#   ifdef DEBUG_I00AFUNC
-#    include <stdio.h>
-#   endif
-
-#   ifndef CRAY_STACK
-#    define CRAY_STACK
-#    ifndef CRAY2
-/* Stack structures for CRAY-1, CRAY X-MP, and CRAY Y-MP */
-struct stack_control_header
-  {
-    long shgrow:32;             /* Number of times stack has grown.  */
-    long shaseg:32;             /* Size of increments to stack.  */
-    long shhwm:32;              /* High water mark of stack.  */
-    long shsize:32;             /* Current size of stack (all segments).  */
-  };
-
-/* The stack segment linkage control information occurs at
-   the high-address end of a stack segment.  (The stack
-   grows from low addresses to high addresses.)  The initial
-   part of the stack segment linkage control information is
-   0200 (octal) words.  This provides for register storage
-   for the routine which overflows the stack.  */
-
-struct stack_segment_linkage
-  {
-    long ss[0200];              /* 0200 overflow words.  */
-    long sssize:32;             /* Number of words in this segment.  */
-    long ssbase:32;             /* Offset to stack base.  */
-    long:32;
-    long sspseg:32;             /* Offset to linkage control of previous
-                                   segment of stack.  */
-    long:32;
-    long sstcpt:32;             /* Pointer to task common address block.  */
-    long sscsnm;                /* Private control structure number for
-                                   microtasking.  */
-    long ssusr1;                /* Reserved for user.  */
-    long ssusr2;                /* Reserved for user.  */
-    long sstpid;                /* Process ID for pid based multi-tasking.  */
-    long ssgvup;                /* Pointer to multitasking thread giveup.  */
-    long sscray[7];             /* Reserved for Cray Research.  */
-    long ssa0;
-    long ssa1;
-    long ssa2;
-    long ssa3;
-    long ssa4;
-    long ssa5;
-    long ssa6;
-    long ssa7;
-    long sss0;
-    long sss1;
-    long sss2;
-    long sss3;
-    long sss4;
-    long sss5;
-    long sss6;
-    long sss7;
-  };
-
-#    else /* CRAY2 */
-/* The following structure defines the vector of words
-   returned by the STKSTAT library routine.  */
-struct stk_stat
-  {
-    long now;                   /* Current total stack size.  */
-    long maxc;                  /* Amount of contiguous space which would
-                                   be required to satisfy the maximum
-                                   stack demand to date.  */
-    long high_water;            /* Stack high-water mark.  */
-    long overflows;             /* Number of stack overflow ($STKOFEN) calls.  */
-    long hits;                  /* Number of internal buffer hits.  */
-    long extends;               /* Number of block extensions.  */
-    long stko_mallocs;          /* Block allocations by $STKOFEN.  */
-    long underflows;            /* Number of stack underflow calls ($STKRETN).  */
-    long stko_free;             /* Number of deallocations by $STKRETN.  */
-    long stkm_free;             /* Number of deallocations by $STKMRET.  */
-    long segments;              /* Current number of stack segments.  */
-    long maxs;                  /* Maximum number of stack segments so far.  */
-    long pad_size;              /* Stack pad size.  */
-    long current_address;       /* Current stack segment address.  */
-    long current_size;          /* Current stack segment size.  This
-                                   number is actually corrupted by STKSTAT to
-                                   include the fifteen word trailer area.  */
-    long initial_address;       /* Address of initial segment.  */
-    long initial_size;          /* Size of initial segment.  */
-  };
-
-/* The following structure describes the data structure which trails
-   any stack segment.  I think that the description in 'asdef' is
-   out of date.  I only describe the parts that I am sure about.  */
-
-struct stk_trailer
-  {
-    long this_address;          /* Address of this block.  */
-    long this_size;             /* Size of this block (does not include
-                                   this trailer).  */
-    long unknown2;
-    long unknown3;
-    long link;                  /* Address of trailer block of previous
-                                   segment.  */
-    long unknown5;
-    long unknown6;
-    long unknown7;
-    long unknown8;
-    long unknown9;
-    long unknown10;
-    long unknown11;
-    long unknown12;
-    long unknown13;
-    long unknown14;
-  };
-
-#    endif /* CRAY2 */
-#   endif /* not CRAY_STACK */
-
-#   ifdef CRAY2
-/* Determine a "stack measure" for an arbitrary ADDRESS.
-   I doubt that "lint" will like this much.  */
-
-static long
-i00afunc (long *address)
-{
-  struct stk_stat status;
-  struct stk_trailer *trailer;
-  long *block, size;
-  long result = 0;
-
-  /* We want to iterate through all of the segments.  The first
-     step is to get the stack status structure.  We could do this
-     more quickly and more directly, perhaps, by referencing the
-     $LM00 common block, but I know that this works.  */
-
-  STKSTAT (&status);
-
-  /* Set up the iteration.  */
-
-  trailer = (struct stk_trailer *) (status.current_address
-                                    + status.current_size
-                                    - 15);
-
-  /* There must be at least one stack segment.  Therefore it is
-     a fatal error if "trailer" is null.  */
-
-  if (trailer == NULL)
-    abort ();
-
-  /* Discard segments that do not contain our argument address.  */
-
-  while (trailer != NULL)
-    {
-      block = (long *) trailer->this_address;
-      size = trailer->this_size;
-      if (block == NULL || size == 0)
-        abort ();
-      trailer = (struct stk_trailer *) trailer->link;
-      if ((block <= address) && (address < (block + size)))
-        break;
-    }
-
-  /* Set the result to the offset in this segment and add the sizes
-     of all predecessor segments.  */
-
-  result = address - block;
-
-  if (trailer == NULL)
-    {
-      return result;
-    }
-
-  do
-    {
-      if (trailer->this_size <= 0)
-        abort ();
-      result += trailer->this_size;
-      trailer = (struct stk_trailer *) trailer->link;
-    }
-  while (trailer != NULL);
-
-  /* We are done.  Note that if you present a bogus address (one
-     not in any segment), you will get a different number back, formed
-     from subtracting the address of the first block.  This is probably
-     not what you want.  */
-
-  return (result);
-}
-
-#   else /* not CRAY2 */
-/* Stack address function for a CRAY-1, CRAY X-MP, or CRAY Y-MP.
-   Determine the number of the cell within the stack,
-   given the address of the cell.  The purpose of this
-   routine is to linearize, in some sense, stack addresses
-   for alloca.  */
-
-static long
-i00afunc (long address)
-{
-  long stkl = 0;
-
-  long size, pseg, this_segment, stack;
-  long result = 0;
-
-  struct stack_segment_linkage *ssptr;
-
-  /* Register B67 contains the address of the end of the
-     current stack segment.  If you (as a subprogram) store
-     your registers on the stack and find that you are past
-     the contents of B67, you have overflowed the segment.
-
-     B67 also points to the stack segment linkage control
-     area, which is what we are really interested in.  */
-
-  stkl = CRAY_STACKSEG_END ();
-  ssptr = (struct stack_segment_linkage *) stkl;
-
-  /* If one subtracts 'size' from the end of the segment,
-     one has the address of the first word of the segment.
-
-     If this is not the first segment, 'pseg' will be
-     nonzero.  */
-
-  pseg = ssptr->sspseg;
-  size = ssptr->sssize;
-
-  this_segment = stkl - size;
-
-  /* It is possible that calling this routine itself caused
-     a stack overflow.  Discard stack segments which do not
-     contain the target address.  */
-
-  while (!(this_segment <= address && address <= stkl))
-    {
-#    ifdef DEBUG_I00AFUNC
-      fprintf (stderr, "%011o %011o %011o\n", this_segment, address, stkl);
-#    endif
-      if (pseg == 0)
-        break;
-      stkl = stkl - pseg;
-      ssptr = (struct stack_segment_linkage *) stkl;
-      size = ssptr->sssize;
-      pseg = ssptr->sspseg;
-      this_segment = stkl - size;
-    }
-
-  result = address - this_segment;
-
-  /* If you subtract pseg from the current end of the stack,
-     you get the address of the previous stack segment's end.
-     This seems a little convoluted to me, but I'll bet you save
-     a cycle somewhere.  */
-
-  while (pseg != 0)
-    {
-#    ifdef DEBUG_I00AFUNC
-      fprintf (stderr, "%011o %011o\n", pseg, size);
-#    endif
-      stkl = stkl - pseg;
-      ssptr = (struct stack_segment_linkage *) stkl;
-      size = ssptr->sssize;
-      pseg = ssptr->sspseg;
-      result += size;
-    }
-  return (result);
-}
-
-#   endif /* not CRAY2 */
-#  endif /* CRAY */
-
 # endif /* no alloca */
-#endif /* not GCC 2 */
+#endif /* not GCC || clang */

lib/alloca.h

@@ -1,23 +1,21 @@
 /* DO NOT EDIT! GENERATED AUTOMATICALLY! */
 /* Memory allocation on the stack.
 
-   Copyright (C) 1995, 1999, 2001-2004, 2006-2020 Free Software Foundation,
+   Copyright (C) 1995, 1999, 2001-2004, 2006-2022 Free Software Foundation,
    Inc.
 
-   This program is free software; you can redistribute it and/or modify it
-   under the terms of the GNU General Public License as published
-   by the Free Software Foundation; either version 3, or (at your option)
-   any later version.
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
 
-   This program is distributed in the hope that it will be useful,
+   This file is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-   General Public License for more details.
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
 
-   You should have received a copy of the GNU General Public
-   License along with this program; if not, see
-   <https://www.gnu.org/licenses/>.
-  */
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
 
 /* Avoid using the symbol _ALLOCA_H here, as Bison assumes _ALLOCA_H
    means there is a real alloca function.  */
@@ -36,13 +34,16 @@
  */
 
 #ifndef alloca
-# ifdef __GNUC__
-   /* Some version of mingw have an <alloca.h> that causes trouble when
-      included after 'alloca' gets defined as a macro.  As a workaround, include
-      this <alloca.h> first and define 'alloca' as a macro afterwards.  */
-#  if (defined _WIN32 && ! defined __CYGWIN__) && 1
-#   include_next <alloca.h>
-#  endif
+  /* Some version of mingw have an <alloca.h> that causes trouble when
+     included after 'alloca' gets defined as a macro.  As a workaround,
+     include this <alloca.h> first and define 'alloca' as a macro afterwards
+     if needed.  */
+# if defined __GNUC__ && (defined _WIN32 && ! defined __CYGWIN__) && 1
+#  include_next <alloca.h>
+# endif
+#endif
+#ifndef alloca
+# if defined __GNUC__ || (__clang_major__ >= 4)
 #  define alloca __builtin_alloca
 # elif defined _AIX
 #  define alloca __alloca

lib/alloca.in.h

@@ -1,22 +1,20 @@
 /* Memory allocation on the stack.
 
-   Copyright (C) 1995, 1999, 2001-2004, 2006-2020 Free Software Foundation,
+   Copyright (C) 1995, 1999, 2001-2004, 2006-2022 Free Software Foundation,
    Inc.
 
-   This program is free software; you can redistribute it and/or modify it
-   under the terms of the GNU General Public License as published
-   by the Free Software Foundation; either version 3, or (at your option)
-   any later version.
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
 
-   This program is distributed in the hope that it will be useful,
+   This file is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-   General Public License for more details.
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
 
-   You should have received a copy of the GNU General Public
-   License along with this program; if not, see
-   <https://www.gnu.org/licenses/>.
-  */
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
 
 /* Avoid using the symbol _ALLOCA_H here, as Bison assumes _ALLOCA_H
    means there is a real alloca function.  */
@@ -35,13 +33,16 @@
  */
 
 #ifndef alloca
-# ifdef __GNUC__
-   /* Some version of mingw have an <alloca.h> that causes trouble when
-      included after 'alloca' gets defined as a macro.  As a workaround, include
-      this <alloca.h> first and define 'alloca' as a macro afterwards.  */
-#  if (defined _WIN32 && ! defined __CYGWIN__) && @HAVE_ALLOCA_H@
-#   include_next <alloca.h>
-#  endif
+  /* Some version of mingw have an <alloca.h> that causes trouble when
+     included after 'alloca' gets defined as a macro.  As a workaround,
+     include this <alloca.h> first and define 'alloca' as a macro afterwards
+     if needed.  */
+# if defined __GNUC__ && (defined _WIN32 && ! defined __CYGWIN__) && @HAVE_ALLOCA_H@
+#  include_next <alloca.h>
+# endif
+#endif
+#ifndef alloca
+# if defined __GNUC__ || (__clang_major__ >= 4)
 #  define alloca __builtin_alloca
 # elif defined _AIX
 #  define alloca __alloca

lib/allocator.c

@@ -1,3 +1,20 @@
+/* Memory allocators such as malloc+free.
+
+   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
 #define _GL_USE_STDLIB_ALLOC 1
 #include <config.h>
 #include "allocator.h"

lib/allocator.h

@@ -1,18 +1,18 @@
 /* Memory allocators such as malloc+free.
 
-   Copyright (C) 2011-2020 Free Software Foundation, Inc.
+   Copyright (C) 2011-2022 Free Software Foundation, Inc.
 
-   This program is free software: you can redistribute it and/or modify
-   it under the terms of the GNU General Public License as published by
-   the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
 
-   This program is distributed in the hope that it will be useful,
+   This file is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-   GNU General Public License for more details.
+   GNU Lesser General Public License for more details.
 
-   You should have received a copy of the GNU General Public License
+   You should have received a copy of the GNU Lesser General Public License
    along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
 
 /* Written by Paul Eggert.  */

lib/anytostr.c

@@ -1,18 +1,18 @@
 /* anytostr.c -- convert integers to printable strings
 
-   Copyright (C) 2001, 2006, 2008-2020 Free Software Foundation, Inc.
+   Copyright (C) 2001, 2006, 2008-2022 Free Software Foundation, Inc.
 
-   This program is free software: you can redistribute it and/or modify
-   it under the terms of the GNU General Public License as published by
-   the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
 
-   This program is distributed in the hope that it will be useful,
+   This file is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-   GNU General Public License for more details.
+   GNU Lesser General Public License for more details.
 
-   You should have received a copy of the GNU General Public License
+   You should have received a copy of the GNU Lesser General Public License
    along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
 
 /* Written by Paul Eggert */
@@ -32,7 +32,7 @@
    INT_BUFSIZE_BOUND (INTTYPE) bytes long.  Return the address of the
    printable string, which need not start at BUF.  */
 
-char * __attribute_warn_unused_result__
+_GL_ATTRIBUTE_NODISCARD char *
 anytostr (inttype i, char *buf)
 {
   char *p = buf + INT_STRLEN_BOUND (inttype);

lib/areadlink-with-size.c

@@ -1,19 +1,19 @@
 /* readlink wrapper to return the link name in malloc'd storage.
    Unlike xreadlink and xreadlink_with_size, don't ever call exit.
 
-   Copyright (C) 2001, 2003-2007, 2009-2020 Free Software Foundation, Inc.
+   Copyright (C) 2001, 2003-2007, 2009-2022 Free Software Foundation, Inc.
 
-   This program is free software: you can redistribute it and/or modify
-   it under the terms of the GNU General Public License as published by
-   the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
 
-   This program is distributed in the hope that it will be useful,
+   This file is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-   GNU General Public License for more details.
+   GNU Lesser General Public License for more details.
 
-   You should have received a copy of the GNU General Public License
+   You should have received a copy of the GNU Lesser General Public License
    along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
 
 /* Written by Jim Meyering <jim@meyering.net>  */
@@ -79,19 +79,18 @@ areadlink_with_size (char const *file, size_t size)
         {
           buf = buffer = malloc (buf_size);
           if (!buffer)
-            return NULL;
+            {
+              errno = ENOMEM;
+              return NULL;
+            }
         }
 
       r = readlink (file, buf, buf_size);
       link_length = r;
 
-      /* On AIX 5L v5.3 and HP-UX 11i v2 04/09, readlink returns -1
-         with errno == ERANGE if the buffer is too small.  */
-      if (r < 0 && errno != ERANGE)
+      if (r < 0)
         {
-          int saved_errno = errno;
           free (buffer);
-          errno = saved_errno;
           return NULL;
         }
 

lib/areadlink.c

@@ -1,19 +1,19 @@
 /* areadlink.c -- readlink wrapper to return the link name in malloc'd storage
    Unlike xreadlink and xreadlink_with_size, don't ever call exit.
 
-   Copyright (C) 2001, 2003-2007, 2009-2020 Free Software Foundation, Inc.
+   Copyright (C) 2001, 2003-2007, 2009-2022 Free Software Foundation, Inc.
 
-   This program is free software: you can redistribute it and/or modify
-   it under the terms of the GNU General Public License as published by
-   the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
 
-   This program is distributed in the hope that it will be useful,
+   This file is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-   GNU General Public License for more details.
+   GNU Lesser General Public License for more details.
 
-   You should have received a copy of the GNU General Public License
+   You should have received a copy of the GNU Lesser General Public License
    along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
 
 /* Written by Jim Meyering <jim@meyering.net>

lib/areadlink.h

@@ -1,33 +1,37 @@
 /* Read symbolic links without size limitation.
 
-   Copyright (C) 2001, 2003-2004, 2007, 2009-2020 Free Software Foundation,
+   Copyright (C) 2001, 2003-2004, 2007, 2009-2022 Free Software Foundation,
    Inc.
 
-   This program is free software: you can redistribute it and/or modify
-   it under the terms of the GNU General Public License as published by
-   the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
 
-   This program is distributed in the hope that it will be useful,
+   This file is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-   GNU General Public License for more details.
+   GNU Lesser General Public License for more details.
 
-   You should have received a copy of the GNU General Public License
+   You should have received a copy of the GNU Lesser General Public License
    along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
 
 /* Written by Jim Meyering <jim@meyering.net>  */
 
-#include <stddef.h>
+#include <stdlib.h>
 
-extern char *areadlink (char const *filename);
-extern char *areadlink_with_size (char const *filename, size_t size_hint);
+extern char *areadlink (char const *filename)
+  _GL_ATTRIBUTE_DEALLOC_FREE;
+extern char *areadlink_with_size (char const *filename, size_t size_hint)
+  _GL_ATTRIBUTE_DEALLOC_FREE;
 
 #if GNULIB_AREADLINKAT
-extern char *areadlinkat (int fd, char const *filename);
+extern char *areadlinkat (int fd, char const *filename)
+  _GL_ATTRIBUTE_DEALLOC_FREE;
 #endif
 
 #if GNULIB_AREADLINKAT_WITH_SIZE
 extern char *areadlinkat_with_size (int fd, char const *filename,
-                                    size_t size_hint);
+                                    size_t size_hint)
+  _GL_ATTRIBUTE_DEALLOC_FREE;
 #endif

lib/areadlinkat-with-size.c

@@ -0,0 +1,154 @@
+/* readlinkat wrapper to return the link name in malloc'd storage.
+   Unlike xreadlinkat, only call exit on failure to change directory.
+
+   Copyright (C) 2001, 2003-2007, 2009-2022 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation, either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Jim Meyering <jim@meyering.net>
+   and Eric Blake <ebb9@byu.net>.  */
+
+#include <config.h>
+
+#include "areadlink.h"
+
+#include <errno.h>
+#include <limits.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#if HAVE_READLINKAT
+
+# ifndef SSIZE_MAX
+#  define SSIZE_MAX ((ssize_t) (SIZE_MAX / 2))
+# endif
+
+/* SYMLINK_MAX is used only for an initial memory-allocation sanity
+   check, so it's OK to guess too small on hosts where there is no
+   arbitrary limit to symbolic link length.  */
+# ifndef SYMLINK_MAX
+#  define SYMLINK_MAX 1024
+# endif
+
+# define MAXSIZE (SIZE_MAX < SSIZE_MAX ? SIZE_MAX : SSIZE_MAX)
+
+/* Call readlinkat to get the symbolic link value of FILE, relative to FD.
+   SIZE is a hint as to how long the link is expected to be;
+   typically it is taken from st_size.  It need not be correct.
+   Return a pointer to that NUL-terminated string in malloc'd storage.
+   If readlinkat fails, malloc fails, or if the link value is longer
+   than SSIZE_MAX, return NULL (caller may use errno to diagnose).
+   However, failure to change directory during readlinkat will issue
+   a diagnostic and exit.  */
+
+char *
+areadlinkat_with_size (int fd, char const *file, size_t size)
+{
+  /* Some buggy file systems report garbage in st_size.  Defend
+     against them by ignoring outlandish st_size values in the initial
+     memory allocation.  */
+  size_t symlink_max = SYMLINK_MAX;
+  size_t INITIAL_LIMIT_BOUND = 8 * 1024;
+  size_t initial_limit = (symlink_max < INITIAL_LIMIT_BOUND
+                          ? symlink_max + 1
+                          : INITIAL_LIMIT_BOUND);
+
+  enum { stackbuf_size = 128 };
+
+  /* The initial buffer size for the link value.  */
+  size_t buf_size = (size == 0 ? stackbuf_size
+                     : size < initial_limit ? size + 1 : initial_limit);
+
+  while (1)
+    {
+      ssize_t r;
+      size_t link_length;
+      char stackbuf[stackbuf_size];
+      char *buf = stackbuf;
+      char *buffer = NULL;
+
+      if (! (size == 0 && buf_size == stackbuf_size))
+        {
+          buf = buffer = malloc (buf_size);
+          if (!buffer)
+            /* We can assume errno == ENOMEM here, since all platforms that have
+               readlinkat() have a POSIX compliant malloc().  */
+            return NULL;
+        }
+
+      r = readlinkat (fd, file, buf, buf_size);
+      link_length = r;
+
+      if (r < 0)
+        {
+          free (buffer);
+          return NULL;
+        }
+
+      if (link_length < buf_size)
+        {
+          buf[link_length] = 0;
+          if (!buffer)
+            {
+              buffer = malloc (link_length + 1);
+              if (buffer)
+                return memcpy (buffer, buf, link_length + 1);
+            }
+          else if (link_length + 1 < buf_size)
+            {
+              /* Shrink BUFFER before returning it.  */
+              char *shrinked_buffer = realloc (buffer, link_length + 1);
+              if (shrinked_buffer != NULL)
+                buffer = shrinked_buffer;
+            }
+          return buffer;
+        }
+
+      free (buffer);
+      if (buf_size <= MAXSIZE / 2)
+        buf_size *= 2;
+      else if (buf_size < MAXSIZE)
+        buf_size = MAXSIZE;
+      else
+        {
+          errno = ENOMEM;
+          return NULL;
+        }
+    }
+}
+
+#else /* !HAVE_READLINKAT */
+
+
+/* It is more efficient to change directories only once and call
+   areadlink_with_size, rather than repeatedly call the replacement
+   readlinkat.  */
+
+# define AT_FUNC_NAME areadlinkat_with_size
+# define AT_FUNC_F1 areadlink_with_size
+# define AT_FUNC_POST_FILE_PARAM_DECLS , size_t size
+# define AT_FUNC_POST_FILE_ARGS        , size
+# define AT_FUNC_RESULT char *
+# define AT_FUNC_FAIL NULL
+# include "at-func.c"
+# undef AT_FUNC_NAME
+# undef AT_FUNC_F1
+# undef AT_FUNC_POST_FILE_PARAM_DECLS
+# undef AT_FUNC_POST_FILE_ARGS
+# undef AT_FUNC_RESULT
+# undef AT_FUNC_FAIL
+
+#endif /* !HAVE_READLINKAT */

lib/areadlinkat.c

@@ -1,11 +1,11 @@
 /* areadlinkat.c -- readlinkat wrapper to return malloc'd link name
    Unlike xreadlinkat, only call exit on failure to change directory.
 
-   Copyright (C) 2001, 2003-2007, 2009-2020 Free Software Foundation, Inc.
+   Copyright (C) 2001, 2003-2007, 2009-2022 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
-   the Free Software Foundation; either version 3 of the License, or
+   the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.
 
    This program is distributed in the hope that it will be useful,

lib/arg-nonnull.h

@@ -1,24 +1,24 @@
 /* A C macro for declaring that specific arguments must not be NULL.
-   Copyright (C) 2009-2020 Free Software Foundation, Inc.
+   Copyright (C) 2009-2022 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
+   under the terms of the GNU Lesser General Public License as published
+   by the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.
 
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-   General Public License for more details.
+   Lesser General Public License for more details.
 
-   You should have received a copy of the GNU General Public License
+   You should have received a copy of the GNU Lesser General Public License
    along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
 
 /* _GL_ARG_NONNULL((n,...,m)) tells the compiler and static analyzer tools
    that the values passed as arguments n, ..., m must be non-NULL pointers.
    n = 1 stands for the first argument, n = 2 for the second argument etc.  */
 #ifndef _GL_ARG_NONNULL
-# if (__GNUC__ == 3 && __GNUC_MINOR__ >= 3) || __GNUC__ > 3
+# if __GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 3) || defined __clang__
 #  define _GL_ARG_NONNULL(params) __attribute__ ((__nonnull__ params))
 # else
 #  define _GL_ARG_NONNULL(params)

lib/argmatch.c

@@ -1,11 +1,11 @@
 /* argmatch.c -- find a match for a string in an array
 
-   Copyright (C) 1990, 1998-1999, 2001-2007, 2009-2020 Free Software
+   Copyright (C) 1990, 1998-1999, 2001-2007, 2009-2022 Free Software
    Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
-   the Free Software Foundation; either version 3 of the License, or
+   the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.
 
    This program is distributed in the hope that it will be useful,
@@ -62,7 +62,7 @@ __argmatch_die (void)
   ARGMATCH_DIE;
 }
 
-/* Used by XARGMATCH and XARGCASEMATCH.  See description in argmatch.h.
+/* Used by XARGMATCH.  See description in argmatch.h.
    Default to __argmatch_die, but allow caller to change this at run-time. */
 argmatch_exit_fn argmatch_die = __argmatch_die;
 
@@ -120,6 +120,21 @@ argmatch (const char *arg, const char *const *arglist,
     return matchind;
 }
 
+ptrdiff_t
+argmatch_exact (const char *arg, const char *const *arglist)
+{
+  size_t i;
+
+  /* Test elements for exact match.  */
+  for (i = 0; arglist[i]; i++)
+    {
+      if (!strcmp (arglist[i], arg))
+        return i;
+    }
+
+  return -1;
+}
+
 /* Error reporting for argmatch.
    CONTEXT is a description of the type of entity that was being matched.
    VALUE is the invalid value that was given.
@@ -174,9 +189,16 @@ ptrdiff_t
 __xargmatch_internal (const char *context,
                       const char *arg, const char *const *arglist,
                       const void *vallist, size_t valsize,
-                      argmatch_exit_fn exit_fn)
+                      argmatch_exit_fn exit_fn,
+                      bool allow_abbreviation)
 {
-  ptrdiff_t res = argmatch (arg, arglist, vallist, valsize);
+  ptrdiff_t res;
+
+  if (allow_abbreviation)
+    res = argmatch (arg, arglist, vallist, valsize);
+  else
+    res = argmatch_exact (arg, arglist);
+
   if (res >= 0)
     /* Success. */
     return res;
@@ -266,7 +288,7 @@ main (int argc, const char *const *argv)
                              backup_args, backup_vals);
 
   printf ("The version control is '%s'\n",
-          ARGMATCH_TO_ARGUMENT (backup_type, backup_args, backup_vals));
+          ARGMATCH_TO_ARGUMENT (&backup_type, backup_args, backup_vals));
 
   return 0;
 }

lib/argmatch.h

@@ -1,11 +1,11 @@
 /* argmatch.h -- definitions and prototypes for argmatch.c
 
-   Copyright (C) 1990, 1998-1999, 2001-2002, 2004-2005, 2009-2020 Free Software
+   Copyright (C) 1990, 1998-1999, 2001-2002, 2004-2005, 2009-2022 Free Software
    Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
-   the Free Software Foundation; either version 3 of the License, or
+   the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.
 
    This program is distributed in the hope that it will be useful,
@@ -52,9 +52,15 @@ extern "C" {
 ptrdiff_t argmatch (char const *arg, char const *const *arglist,
                     void const *vallist, size_t valsize) _GL_ATTRIBUTE_PURE;
 
+ptrdiff_t argmatch_exact (char const *arg, char const *const *arglist)
+  _GL_ATTRIBUTE_PURE;
+
 # define ARGMATCH(Arg, Arglist, Vallist) \
   argmatch (Arg, Arglist, (void const *) (Vallist), sizeof *(Vallist))
 
+# define ARGMATCH_EXACT(Arg, Arglist) \
+  argmatch_exact (Arg, Arglist)
+
 /* xargmatch calls this function when it fails.  This function should not
    return.  By default, this is a function that calls ARGMATCH_DIE which
    in turn defaults to 'exit (exit_failure)'.  */
@@ -83,13 +89,14 @@ void argmatch_valid (char const *const *arglist,
 
 
 
-/* Same as argmatch, but upon failure, report an explanation of the
-   failure, and exit using the function EXIT_FN. */
+/* Like argmatch/argmatch_exact, but upon failure, report an explanation
+   of the failure, and exit using the function EXIT_FN. */
 
 ptrdiff_t __xargmatch_internal (char const *context,
                                 char const *arg, char const *const *arglist,
                                 void const *vallist, size_t valsize,
-                                argmatch_exit_fn exit_fn);
+                                argmatch_exit_fn exit_fn,
+                                bool allow_abbreviation);
 
 /* Programmer friendly interface to __xargmatch_internal. */
 
@@ -97,7 +104,15 @@ ptrdiff_t __xargmatch_internal (char const *context,
   ((Vallist) [__xargmatch_internal (Context, Arg, Arglist,      \
                                     (void const *) (Vallist),   \
                                     sizeof *(Vallist),          \
-                                    argmatch_die)])
+                                    argmatch_die,               \
+                                    true)])
+
+# define XARGMATCH_EXACT(Context, Arg, Arglist, Vallist)        \
+  ((Vallist) [__xargmatch_internal (Context, Arg, Arglist,      \
+                                    (void const *) (Vallist),   \
+                                    sizeof *(Vallist),          \
+                                    argmatch_die,               \
+                                    false)])
 
 /* Convert a value into a corresponding argument. */
 

lib/argv-iter.c

@@ -1,5 +1,5 @@
 /* Iterate over arguments from argv or --files0-from=FILE
-   Copyright (C) 2008-2020 Free Software Foundation, Inc.
+   Copyright (C) 2008-2022 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by

lib/argv-iter.h

@@ -1,5 +1,5 @@
 /* Iterate over arguments from argv or --files0-from=FILE
-   Copyright (C) 2008-2020 Free Software Foundation, Inc.
+   Copyright (C) 2008-2022 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
@@ -30,13 +30,14 @@ enum argv_iter_err
   AI_ERR_READ
 };
 
+void argv_iter_free (struct argv_iterator *)
+  _GL_ARG_NONNULL ((1));
+
 struct argv_iterator *argv_iter_init_argv (char **argv)
-  _GL_ARG_NONNULL ((1));
+  _GL_ARG_NONNULL ((1)) _GL_ATTRIBUTE_DEALLOC (argv_iter_free, 1);
 struct argv_iterator *argv_iter_init_stream (FILE *fp)
-  _GL_ARG_NONNULL ((1));
+  _GL_ARG_NONNULL ((1)) _GL_ATTRIBUTE_DEALLOC (argv_iter_free, 1);
 char *argv_iter (struct argv_iterator *, enum argv_iter_err *)
   _GL_ARG_NONNULL ((1, 2));
 size_t argv_iter_n_args (struct argv_iterator const *)
   _GL_ATTRIBUTE_PURE _GL_ARG_NONNULL ((1));
-void argv_iter_free (struct argv_iterator *)
-  _GL_ARG_NONNULL ((1));

lib/arpa/inet.h

@@ -1,20 +1,20 @@
 /* DO NOT EDIT! GENERATED AUTOMATICALLY! */
 /* A GNU-like <arpa/inet.h>.
 
-   Copyright (C) 2005-2006, 2008-2020 Free Software Foundation, Inc.
+   Copyright (C) 2005-2006, 2008-2022 Free Software Foundation, Inc.
 
-   This program is free software; you can redistribute it and/or modify
-   it under the terms of the GNU General Public License as published by
-   the Free Software Foundation; either version 3, or (at your option)
-   any later version.
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
 
-   This program is distributed in the hope that it will be useful,
+   This file is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-   GNU General Public License for more details.
+   GNU Lesser General Public License for more details.
 
-   You should have received a copy of the GNU General Public License
-   along with this program; if not, see <https://www.gnu.org/licenses/>.  */
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
 
 #ifndef _GL_ARPA_INET_H
 
@@ -58,19 +58,19 @@
 
 /* The definitions of _GL_FUNCDECL_RPL etc. are copied here.  */
 /* C++ compatible function declaration macros.
-   Copyright (C) 2010-2020 Free Software Foundation, Inc.
+   Copyright (C) 2010-2022 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
+   under the terms of the GNU Lesser General Public License as published
+   by the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.
 
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-   General Public License for more details.
+   Lesser General Public License for more details.
 
-   You should have received a copy of the GNU General Public License
+   You should have received a copy of the GNU Lesser General Public License
    along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
 
 #ifndef _GL_CXXDEFS_H
@@ -205,6 +205,16 @@
     _GL_EXTERN_C int _gl_cxxalias_dummy
 #endif
 
+/* _GL_CXXALIAS_MDA (func, rettype, parameters);
+   is to be used when func is a Microsoft deprecated alias, on native Windows.
+   It declares a C++ alias called GNULIB_NAMESPACE::func
+   that redirects to _func, if GNULIB_NAMESPACE is defined.
+   Example:
+     _GL_CXXALIAS_MDA (open, int, (const char *filename, int flags, ...));
+ */
+#define _GL_CXXALIAS_MDA(func,rettype,parameters) \
+  _GL_CXXALIAS_RPL_1 (func, _##func, rettype, parameters)
+
 /* _GL_CXXALIAS_RPL_CAST_1 (func, rpl_func, rettype, parameters);
    is like  _GL_CXXALIAS_RPL_1 (func, rpl_func, rettype, parameters);
    except that the C function rpl_func may have a slightly different
@@ -230,6 +240,14 @@
     _GL_EXTERN_C int _gl_cxxalias_dummy
 #endif
 
+/* _GL_CXXALIAS_MDA_CAST (func, rettype, parameters);
+   is like  _GL_CXXALIAS_MDA (func, rettype, parameters);
+   except that the C function func may have a slightly different declaration.
+   A cast is used to silence the "invalid conversion" error that would
+   otherwise occur.  */
+#define _GL_CXXALIAS_MDA_CAST(func,rettype,parameters) \
+  _GL_CXXALIAS_RPL_CAST_1 (func, _##func, rettype, parameters)
+
 /* _GL_CXXALIAS_SYS (func, rettype, parameters);
    declares a C++ alias called GNULIB_NAMESPACE::func
    that redirects to the system provided function func, if GNULIB_NAMESPACE
@@ -327,7 +345,7 @@
    _GL_CXXALIASWARN_2 (func, namespace)
 /* To work around GCC bug <https://gcc.gnu.org/bugzilla/show_bug.cgi?id=43881>,
    we enable the warning only when not optimizing.  */
-# if !__OPTIMIZE__
+# if !(defined __GNUC__ && !defined __clang__ && __OPTIMIZE__)
 #  define _GL_CXXALIASWARN_2(func,namespace) \
     _GL_WARN_ON_USE (func, \
                      "The symbol ::" #func " refers to the system function. " \
@@ -355,9 +373,9 @@
    _GL_CXXALIASWARN1_2 (func, rettype, parameters_and_attributes, namespace)
 /* To work around GCC bug <https://gcc.gnu.org/bugzilla/show_bug.cgi?id=43881>,
    we enable the warning only when not optimizing.  */
-# if !__OPTIMIZE__
+# if !(defined __GNUC__ && !defined __clang__ && __OPTIMIZE__)
 #  define _GL_CXXALIASWARN1_2(func,rettype,parameters_and_attributes,namespace) \
-    _GL_WARN_ON_USE_CXX (func, rettype, parameters_and_attributes, \
+    _GL_WARN_ON_USE_CXX (func, rettype, rettype, parameters_and_attributes, \
                          "The symbol ::" #func " refers to the system function. " \
                          "Use " #namespace "::" #func " instead.")
 # else
@@ -373,26 +391,26 @@
 
 /* The definition of _GL_ARG_NONNULL is copied here.  */
 /* A C macro for declaring that specific arguments must not be NULL.
-   Copyright (C) 2009-2020 Free Software Foundation, Inc.
+   Copyright (C) 2009-2022 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
+   under the terms of the GNU Lesser General Public License as published
+   by the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.
 
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-   General Public License for more details.
+   Lesser General Public License for more details.
 
-   You should have received a copy of the GNU General Public License
+   You should have received a copy of the GNU Lesser General Public License
    along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
 
 /* _GL_ARG_NONNULL((n,...,m)) tells the compiler and static analyzer tools
    that the values passed as arguments n, ..., m must be non-NULL pointers.
    n = 1 stands for the first argument, n = 2 for the second argument etc.  */
 #ifndef _GL_ARG_NONNULL
-# if (__GNUC__ == 3 && __GNUC_MINOR__ >= 3) || __GNUC__ > 3
+# if __GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 3) || defined __clang__
 #  define _GL_ARG_NONNULL(params) __attribute__ ((__nonnull__ params))
 # else
 #  define _GL_ARG_NONNULL(params)
@@ -401,19 +419,19 @@
 
 /* The definition of _GL_WARN_ON_USE is copied here.  */
 /* A C macro for emitting warnings if a function is used.
-   Copyright (C) 2010-2020 Free Software Foundation, Inc.
+   Copyright (C) 2010-2022 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
+   under the terms of the GNU Lesser General Public License as published
+   by the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.
 
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-   General Public License for more details.
+   Lesser General Public License for more details.
 
-   You should have received a copy of the GNU General Public License
+   You should have received a copy of the GNU Lesser General Public License
    along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
 
 /* _GL_WARN_ON_USE (function, "literal string") issues a declaration
@@ -486,13 +504,20 @@
 # if 4 < __GNUC__ || (__GNUC__ == 4 && 3 <= __GNUC_MINOR__)
 /* A compiler attribute is available in gcc versions 4.3.0 and later.  */
 #  define _GL_WARN_ON_USE(function, message) \
-extern __typeof__ (function) function __attribute__ ((__warning__ (message)))
+_GL_WARN_EXTERN_C __typeof__ (function) function __attribute__ ((__warning__ (message)))
 #  define _GL_WARN_ON_USE_ATTRIBUTE(message) \
   __attribute__ ((__warning__ (message)))
+# elif __clang_major__ >= 4
+/* Another compiler attribute is available in clang.  */
+#  define _GL_WARN_ON_USE(function, message) \
+_GL_WARN_EXTERN_C __typeof__ (function) function \
+  __attribute__ ((__diagnose_if__ (1, message, "warning")))
+#  define _GL_WARN_ON_USE_ATTRIBUTE(message) \
+  __attribute__ ((__diagnose_if__ (1, message, "warning")))
 # elif __GNUC__ >= 3 && GNULIB_STRICT_CHECKING
 /* Verify the existence of the function.  */
 #  define _GL_WARN_ON_USE(function, message) \
-extern __typeof__ (function) function
+_GL_WARN_EXTERN_C __typeof__ (function) function
 #  define _GL_WARN_ON_USE_ATTRIBUTE(message)
 # else /* Unsupported.  */
 #  define _GL_WARN_ON_USE(function, message) \
@@ -501,24 +526,35 @@ _GL_WARN_EXTERN_C int _gl_warn_on_use
 # endif
 #endif
 
-/* _GL_WARN_ON_USE_CXX (function, rettype, parameters_and_attributes, "string")
-   is like _GL_WARN_ON_USE (function, "string"), except that the function is
-   declared with the given prototype, consisting of return type, parameters,
-   and attributes.
+/* _GL_WARN_ON_USE_CXX (function, rettype_gcc, rettype_clang, parameters_and_attributes, "message")
+   is like _GL_WARN_ON_USE (function, "message"), except that in C++ mode the
+   function is declared with the given prototype, consisting of return type,
+   parameters, and attributes.
    This variant is useful for overloaded functions in C++. _GL_WARN_ON_USE does
    not work in this case.  */
 #ifndef _GL_WARN_ON_USE_CXX
-# if 4 < __GNUC__ || (__GNUC__ == 4 && 3 <= __GNUC_MINOR__)
-#  define _GL_WARN_ON_USE_CXX(function,rettype,parameters_and_attributes,msg) \
-extern rettype function parameters_and_attributes \
-     __attribute__ ((__warning__ (msg)))
-# elif __GNUC__ >= 3 && GNULIB_STRICT_CHECKING
+# if !defined __cplusplus
+#  define _GL_WARN_ON_USE_CXX(function,rettype_gcc,rettype_clang,parameters_and_attributes,msg) \
+     _GL_WARN_ON_USE (function, msg)
+# else
+#  if 4 < __GNUC__ || (__GNUC__ == 4 && 3 <= __GNUC_MINOR__)
+/* A compiler attribute is available in gcc versions 4.3.0 and later.  */
+#   define _GL_WARN_ON_USE_CXX(function,rettype_gcc,rettype_clang,parameters_and_attributes,msg) \
+extern rettype_gcc function parameters_and_attributes \
+  __attribute__ ((__warning__ (msg)))
+#  elif __clang_major__ >= 4
+/* Another compiler attribute is available in clang.  */
+#   define _GL_WARN_ON_USE_CXX(function,rettype_gcc,rettype_clang,parameters_and_attributes,msg) \
+extern rettype_clang function parameters_and_attributes \
+  __attribute__ ((__diagnose_if__ (1, msg, "warning")))
+#  elif __GNUC__ >= 3 && GNULIB_STRICT_CHECKING
 /* Verify the existence of the function.  */
-#  define _GL_WARN_ON_USE_CXX(function,rettype,parameters_and_attributes,msg) \
-extern rettype function parameters_and_attributes
-# else /* Unsupported.  */
-#  define _GL_WARN_ON_USE_CXX(function,rettype,parameters_and_attributes,msg) \
+#   define _GL_WARN_ON_USE_CXX(function,rettype_gcc,rettype_clang,parameters_and_attributes,msg) \
+extern rettype_gcc function parameters_and_attributes
+#  else /* Unsupported.  */
+#   define _GL_WARN_ON_USE_CXX(function,rettype_gcc,rettype_clang,parameters_and_attributes,msg) \
 _GL_WARN_EXTERN_C int _gl_warn_on_use
+#  endif
 # endif
 #endif
 

lib/arpa_inet.in.h

@@ -1,19 +1,19 @@
 /* A GNU-like <arpa/inet.h>.
 
-   Copyright (C) 2005-2006, 2008-2020 Free Software Foundation, Inc.
+   Copyright (C) 2005-2006, 2008-2022 Free Software Foundation, Inc.
 
-   This program is free software; you can redistribute it and/or modify
-   it under the terms of the GNU General Public License as published by
-   the Free Software Foundation; either version 3, or (at your option)
-   any later version.
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
 
-   This program is distributed in the hope that it will be useful,
+   This file is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-   GNU General Public License for more details.
+   GNU Lesser General Public License for more details.
 
-   You should have received a copy of the GNU General Public License
-   along with this program; if not, see <https://www.gnu.org/licenses/>.  */
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
 
 #ifndef _@GUARD_PREFIX@_ARPA_INET_H
 

lib/asnprintf.c

@@ -1,18 +1,18 @@
 /* Formatted output to strings.
-   Copyright (C) 1999, 2002, 2006, 2009-2020 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006, 2009-2022 Free Software Foundation, Inc.
 
-   This program is free software; you can redistribute it and/or modify
-   it under the terms of the GNU General Public License as published by
-   the Free Software Foundation; either version 3, or (at your option)
-   any later version.
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
 
-   This program is distributed in the hope that it will be useful,
+   This file is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-   GNU General Public License for more details.
+   GNU Lesser General Public License for more details.
 
-   You should have received a copy of the GNU General Public License along
-   with this program; if not, see <https://www.gnu.org/licenses/>.  */
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
 
 #include <config.h>
 

lib/asprintf.c

@@ -1,19 +1,19 @@
 /* Formatted output to strings.
-   Copyright (C) 1999, 2002, 2006-2007, 2009-2020 Free Software Foundation,
+   Copyright (C) 1999, 2002, 2006-2007, 2009-2022 Free Software Foundation,
    Inc.
 
-   This program is free software; you can redistribute it and/or modify
-   it under the terms of the GNU General Public License as published by
-   the Free Software Foundation; either version 3, or (at your option)
-   any later version.
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
 
-   This program is distributed in the hope that it will be useful,
+   This file is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-   GNU General Public License for more details.
+   GNU Lesser General Public License for more details.
 
-   You should have received a copy of the GNU General Public License along
-   with this program; if not, see <https://www.gnu.org/licenses/>.  */
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
 
 #include <config.h>
 

lib/assure.h

@@ -1,18 +1,18 @@
 /* Run-time assert-like macros.
 
-   Copyright (C) 2014-2020 Free Software Foundation, Inc.
+   Copyright (C) 2014-2022 Free Software Foundation, Inc.
 
-   This program is free software: you can redistribute it and/or modify
-   it under the terms of the GNU General Public License as published by
-   the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
 
-   This program is distributed in the hope that it will be useful,
+   This file is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-   GNU General Public License for more details.
+   GNU Lesser General Public License for more details.
 
-   You should have received a copy of the GNU General Public License
+   You should have received a copy of the GNU Lesser General Public License
    along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
 
 /* Written by Paul Eggert.  */
@@ -21,12 +21,32 @@
 #define _GL_ASSURE_H
 
 #include <assert.h>
+#include "verify.h"
+
+/* Evaluate an assertion E that is guaranteed to be true.
+   If NDEBUG is not defined, abort the program if E is false.
+   If NDEBUG is defined, the compiler can assume E and behavior is
+   undefined if E is false, fails to evaluate, or has side effects.
+
+   Unlike standard 'assert', this macro evaluates E even when NDEBUG
+   is defined, so as to catch typos, avoid some GCC warnings, and
+   improve performance when E is simple enough.
+
+   Also see the documentation for 'assume' in verify.h.  */
+
+#ifdef NDEBUG
+# define affirm(E) assume (E)
+#else
+# define affirm(E) assert (E)
+#endif
 
 /* Check E's value at runtime, and report an error and abort if not.
    However, do nothing if NDEBUG is defined.
 
-   Unlike standard 'assert', this macro always compiles E even when NDEBUG
-   is defined, so as to catch typos and avoid some GCC warnings.  */
+   Unlike standard 'assert', this macro compiles E even when NDEBUG
+   is defined, so as to catch typos and avoid some GCC warnings.
+   Unlike 'affirm', it is OK for E to use hard-to-optimize features,
+   since E is not executed if NDEBUG is defined.  */
 
 #ifdef NDEBUG
 # define assure(E) ((void) (0 && (E)))

lib/at-func.c

@@ -1,9 +1,9 @@
 /* Define at-style functions like fstatat, unlinkat, fchownat, etc.
-   Copyright (C) 2006, 2009-2020 Free Software Foundation, Inc.
+   Copyright (C) 2006, 2009-2022 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
-   the Free Software Foundation; either version 3 of the License, or
+   the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.
 
    This program is distributed in the hope that it will be useful,
@@ -16,7 +16,7 @@
 
 /* written by Jim Meyering */
 
-#include "dosname.h" /* solely for definition of IS_ABSOLUTE_FILE_NAME */
+#include "filename.h" /* solely for definition of IS_ABSOLUTE_FILE_NAME */
 
 #ifdef GNULIB_SUPPORT_ONLY_AT_FDCWD
 # include <errno.h>

lib/at-func2.c

@@ -1,9 +1,9 @@
 /* Define 2-FD at-style functions like linkat or renameat.
-   Copyright (C) 2006, 2009-2020 Free Software Foundation, Inc.
+   Copyright (C) 2006, 2009-2022 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
-   the Free Software Foundation; either version 3 of the License, or
+   the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.
 
    This program is distributed in the hope that it will be useful,
@@ -25,7 +25,7 @@
 #include <string.h>
 #include <unistd.h>
 
-#include "dosname.h" /* solely for definition of IS_ABSOLUTE_FILE_NAME */
+#include "filename.h" /* solely for definition of IS_ABSOLUTE_FILE_NAME */
 #include "filenamecat.h"
 #include "openat.h"
 #include "same-inode.h"

lib/attribute.h

@@ -0,0 +1,226 @@
+/* ATTRIBUTE_* macros for using attributes in GCC and similar compilers
+
+   Copyright 2020-2022 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Paul Eggert.  */
+
+/* Provide public ATTRIBUTE_* names for the private _GL_ATTRIBUTE_*
+   macros used within Gnulib.  */
+
+/* These attributes can be placed in two ways:
+     - At the start of a declaration (i.e. even before storage-class
+       specifiers!); then they apply to all entities that are declared
+       by the declaration.
+     - Immediately after the name of an entity being declared by the
+       declaration; then they apply to that entity only.  */
+
+#ifndef _GL_ATTRIBUTE_H
+#define _GL_ATTRIBUTE_H
+
+
+/* This file defines two types of attributes:
+   * C2x standard attributes.  These have macro names that do not begin with
+     'ATTRIBUTE_'.
+   * Selected GCC attributes; see:
+     https://gcc.gnu.org/onlinedocs/gcc/Common-Function-Attributes.html
+     https://gcc.gnu.org/onlinedocs/gcc/Common-Variable-Attributes.html
+     https://gcc.gnu.org/onlinedocs/gcc/Common-Type-Attributes.html
+     These names begin with 'ATTRIBUTE_' to avoid name clashes.  */
+
+
+/* =============== Attributes for specific kinds of functions =============== */
+
+/* Attributes for functions that should not be used.  */
+
+/* Warn if the entity is used.  */
+/* Applies to:
+     - function, variable,
+     - struct, union, struct/union member,
+     - enumeration, enumeration item,
+     - typedef,
+   in C++ also: namespace, class, template specialization.  */
+#define DEPRECATED _GL_ATTRIBUTE_DEPRECATED
+
+/* If a function call is not optimized way, warn with MSG.  */
+/* Applies to: functions.  */
+#define ATTRIBUTE_WARNING(msg) _GL_ATTRIBUTE_WARNING (msg)
+
+/* If a function call is not optimized way, report an error with MSG.  */
+/* Applies to: functions.  */
+#define ATTRIBUTE_ERROR(msg) _GL_ATTRIBUTE_ERROR (msg)
+
+
+/* Attributes for memory-allocating functions.  */
+
+/* The function returns a pointer to freshly allocated memory.  */
+/* Applies to: functions.  */
+#define ATTRIBUTE_MALLOC _GL_ATTRIBUTE_MALLOC
+
+/* ATTRIBUTE_ALLOC_SIZE ((N)) - The Nth argument of the function
+   is the size of the returned memory block.
+   ATTRIBUTE_ALLOC_SIZE ((M, N)) - Multiply the Mth and Nth arguments
+   to determine the size of the returned memory block.  */
+/* Applies to: function, pointer to function, function types.  */
+#define ATTRIBUTE_ALLOC_SIZE(args) _GL_ATTRIBUTE_ALLOC_SIZE (args)
+
+/* ATTRIBUTE_DEALLOC (F, I) declares that the function returns pointers
+   that can be freed by passing them as the Ith argument to the
+   function F.
+   ATTRIBUTE_DEALLOC_FREE declares that the function returns pointers that
+   can be freed via 'free'; it can be used only after declaring 'free'.  */
+/* Applies to: functions.  Cannot be used on inline functions.  */
+#define ATTRIBUTE_DEALLOC(f, i) _GL_ATTRIBUTE_DEALLOC(f, i)
+#define ATTRIBUTE_DEALLOC_FREE _GL_ATTRIBUTE_DEALLOC_FREE
+
+/* Attributes for variadic functions.  */
+
+/* The variadic function expects a trailing NULL argument.
+   ATTRIBUTE_SENTINEL () - The last argument is NULL (requires C99).
+   ATTRIBUTE_SENTINEL ((N)) - The (N+1)st argument from the end is NULL.  */
+/* Applies to: functions.  */
+#define ATTRIBUTE_SENTINEL(pos) _GL_ATTRIBUTE_SENTINEL (pos)
+
+
+/* ================== Attributes for compiler diagnostics ================== */
+
+/* Attributes that help the compiler diagnose programmer mistakes.
+   Some of them may also help for some compiler optimizations.  */
+
+/* ATTRIBUTE_FORMAT ((ARCHETYPE, STRING-INDEX, FIRST-TO-CHECK)) -
+   The STRING-INDEXth function argument is a format string of style
+   ARCHETYPE, which is one of:
+     printf, gnu_printf
+     scanf, gnu_scanf,
+     strftime, gnu_strftime,
+     strfmon,
+   or the same thing prefixed and suffixed with '__'.
+   If FIRST-TO-CHECK is not 0, arguments starting at FIRST-TO_CHECK
+   are suitable for the format string.  */
+/* Applies to: functions.  */
+#define ATTRIBUTE_FORMAT(spec) _GL_ATTRIBUTE_FORMAT (spec)
+
+/* ATTRIBUTE_NONNULL ((N1, N2,...)) - Arguments N1, N2,... must not be NULL.
+   ATTRIBUTE_NONNULL () - All pointer arguments must not be null.  */
+/* Applies to: functions.  */
+#define ATTRIBUTE_NONNULL(args) _GL_ATTRIBUTE_NONNULL (args)
+
+/* The function's return value is a non-NULL pointer.  */
+/* Applies to: functions.  */
+#define ATTRIBUTE_RETURNS_NONNULL _GL_ATTRIBUTE_RETURNS_NONNULL
+
+/* Warn if the caller does not use the return value,
+   unless the caller uses something like ignore_value.  */
+/* Applies to: function, enumeration, class.  */
+#define NODISCARD _GL_ATTRIBUTE_NODISCARD
+
+
+/* Attributes that disable false alarms when the compiler diagnoses
+   programmer "mistakes".  */
+
+/* Do not warn if the entity is not used.  */
+/* Applies to:
+     - function, variable,
+     - struct, union, struct/union member,
+     - enumeration, enumeration item,
+     - typedef,
+   in C++ also: class.  */
+#define MAYBE_UNUSED _GL_ATTRIBUTE_MAYBE_UNUSED
+
+/* The contents of a character array is not meant to be NUL-terminated.  */
+/* Applies to: struct/union members and variables that are arrays of element
+   type '[[un]signed] char'.  */
+#define ATTRIBUTE_NONSTRING _GL_ATTRIBUTE_NONSTRING
+
+/* Do not warn if control flow falls through to the immediately
+   following 'case' or 'default' label.  */
+/* Applies to: Empty statement (;), inside a 'switch' statement.  */
+#define FALLTHROUGH _GL_ATTRIBUTE_FALLTHROUGH
+
+
+/* ================== Attributes for debugging information ================== */
+
+/* Attributes regarding debugging information emitted by the compiler.  */
+
+/* Omit the function from stack traces when debugging.  */
+/* Applies to: function.  */
+#define ATTRIBUTE_ARTIFICIAL _GL_ATTRIBUTE_ARTIFICIAL
+
+/* Make the entity visible to debuggers etc., even with '-fwhole-program'.  */
+/* Applies to: functions, variables.  */
+#define ATTRIBUTE_EXTERNALLY_VISIBLE _GL_ATTRIBUTE_EXTERNALLY_VISIBLE
+
+
+/* ========== Attributes that mainly direct compiler optimizations ========== */
+
+/* The function does not throw exceptions.  */
+/* Applies to: functions.  */
+#define ATTRIBUTE_NOTHROW _GL_ATTRIBUTE_NOTHROW
+
+/* Do not inline the function.  */
+/* Applies to: functions.  */
+#define ATTRIBUTE_NOINLINE _GL_ATTRIBUTE_NOINLINE
+
+/* Always inline the function, and report an error if the compiler
+   cannot inline.  */
+/* Applies to: function.  */
+#define ATTRIBUTE_ALWAYS_INLINE _GL_ATTRIBUTE_ALWAYS_INLINE
+
+/* It is OK for a compiler to omit duplicate calls with the same arguments.
+   This attribute is safe for a function that neither depends on
+   nor affects observable state, and always returns exactly once -
+   e.g., does not loop forever, and does not call longjmp.
+   (This attribute is stricter than ATTRIBUTE_PURE.)  */
+/* Applies to: functions.  */
+#define ATTRIBUTE_CONST _GL_ATTRIBUTE_CONST
+
+/* It is OK for a compiler to omit duplicate calls with the same
+   arguments if observable state is not changed between calls.
+   This attribute is safe for a function that does not affect
+   observable state, and always returns exactly once.
+   (This attribute is looser than ATTRIBUTE_CONST.)  */
+/* Applies to: functions.  */
+#define ATTRIBUTE_PURE _GL_ATTRIBUTE_PURE
+
+/* The function is rarely executed.  */
+/* Applies to: functions.  */
+#define ATTRIBUTE_COLD _GL_ATTRIBUTE_COLD
+
+/* If called from some other compilation unit, the function executes
+   code from that unit only by return or by exception handling,
+   letting the compiler optimize that unit more aggressively.  */
+/* Applies to: functions.  */
+#define ATTRIBUTE_LEAF _GL_ATTRIBUTE_LEAF
+
+/* For struct members: The member has the smallest possible alignment.
+   For struct, union, class: All members have the smallest possible alignment,
+   minimizing the memory required.  */
+/* Applies to: struct members, struct, union,
+   in C++ also: class.  */
+#define ATTRIBUTE_PACKED _GL_ATTRIBUTE_PACKED
+
+
+/* ================ Attributes that make invalid code valid ================ */
+
+/* Attributes that prevent fatal compiler optimizations for code that is not
+   fully ISO C compliant.  */
+
+/* Pointers to the type may point to the same storage as pointers to
+   other types, thus disabling strict aliasing optimization.  */
+/* Applies to: types.  */
+#define ATTRIBUTE_MAY_ALIAS _GL_ATTRIBUTE_MAY_ALIAS
+
+
+#endif /* _GL_ATTRIBUTE_H */

lib/backup-find.c

@@ -1,10 +1,10 @@
 /* backupfile.c -- make Emacs style backup file names
 
-   Copyright 2017-2020 Free Software Foundation, Inc.
+   Copyright 2017-2022 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
-   the Free Software Foundation; either version 3 of the License, or
+   the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.
 
    This program is distributed in the hope that it will be useful,

lib/backup-internal.h

@@ -1,3 +1,23 @@
+/* Backup files.
+
+   Copyright (C) 2017-2022 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published
+   by the Free Software Foundation, either version 3 of the License,
+   or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
 #include "backupfile.h"
 #include <stdbool.h>
-extern char *backupfile_internal (int, char const *, enum backup_type, bool);
+#include <stdlib.h>
+
+extern char *backupfile_internal (int, char const *, enum backup_type, bool)
+  _GL_ATTRIBUTE_MALLOC _GL_ATTRIBUTE_DEALLOC_FREE;

lib/backup-rename.c

@@ -1,10 +1,10 @@
 /* Rename a file to a backup name, Emacs style.
 
-   Copyright 2017-2020 Free Software Foundation, Inc.
+   Copyright 2017-2022 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
-   the Free Software Foundation; either version 3 of the License, or
+   the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.
 
    This program is distributed in the hope that it will be useful,

lib/backupfile.c

@@ -1,10 +1,10 @@
 /* backupfile.c -- make Emacs style backup file names
 
-   Copyright (C) 1990-2006, 2009-2020 Free Software Foundation, Inc.
+   Copyright (C) 1990-2006, 2009-2022 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
-   the Free Software Foundation; either version 3 of the License, or
+   the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.
 
    This program is distributed in the hope that it will be useful,
@@ -22,11 +22,7 @@
 
 #include "backup-internal.h"
 
-#include "dirname.h"
-#include "opendirat.h"
-#include "renameatu.h"
-#include "xalloc-oversized.h"
-
+#include <dirent.h>
 #include <errno.h>
 #include <fcntl.h>
 #include <stdbool.h>
@@ -35,13 +31,12 @@
 #include <string.h>
 #include <unistd.h>
 
-#ifndef FALLTHROUGH
-# if __GNUC__ < 7
-#  define FALLTHROUGH ((void) 0)
-# else
-#  define FALLTHROUGH __attribute__ ((__fallthrough__))
-# endif
-#endif
+#include "attribute.h"
+#include "basename-lgpl.h"
+#include "ialloc.h"
+#include "intprops.h"
+#include "opendirat.h"
+#include "renameatu.h"
 
 #ifndef _D_EXACT_NAMLEN
 # define _D_EXACT_NAMLEN(dp) strlen ((dp)->d_name)
@@ -49,6 +44,7 @@
 
 #if ! (HAVE_PATHCONF && defined _PC_NAME_MAX)
 # define pathconf(file, option) (errno = -1)
+# define fpathconf(fd, option) (errno = -1)
 #endif
 
 #ifndef _POSIX_NAME_MAX
@@ -95,19 +91,20 @@ set_simple_backup_suffix (char const *s)
 /* If FILE (which was of length FILELEN before an extension was
    appended to it) is too long, replace the extension with the single
    char E.  If the result is still too long, remove the char just
-   before E.
+   before E.  Return true if the extension was OK already, false
+   if it needed replacement.
 
    If DIR_FD is nonnegative, it is a file descriptor for FILE's parent.
-   *NAME_MAX is either 0, or the cached result of a previous call for
+   *BASE_MAX is either 0, or the cached result of a previous call for
    FILE's parent's _PC_NAME_MAX.  */
 
-static void
-check_extension (char *file, size_t filelen, char e,
-                 int dir_fd, size_t *base_max)
+static bool
+check_extension (char *file, idx_t filelen, char e,
+                 int dir_fd, idx_t *base_max)
 {
   char *base = last_component (file);
-  size_t baselen = base_len (base);
-  size_t baselen_max = HAVE_LONG_FILE_NAMES ? 255 : NAME_MAX_MINIMUM;
+  idx_t baselen = base_len (base);
+  idx_t baselen_max = HAVE_LONG_FILE_NAMES ? 255 : NAME_MAX_MINIMUM;
 
   if (HAVE_DOS_FILE_NAMES || NAME_MAX_MINIMUM < baselen)
     {
@@ -157,13 +154,16 @@ check_extension (char *file, size_t filelen, char e,
         }
     }
 
-  if (baselen_max < baselen)
+  if (baselen <= baselen_max)
+    return true;
+  else
     {
       baselen = file + filelen - base;
       if (baselen_max <= baselen)
         baselen = baselen_max - 1;
       base[baselen] = e;
       base[baselen + 1] = '\0';
+      return false;
     }
 }
 
@@ -191,9 +191,11 @@ enum numbered_backup_result
    Store into *BUFFER the next backup name for the named file,
    with a version number greater than all the
    existing numbered backups.  Reallocate *BUFFER as necessary; its
-   initial allocated size is BUFFER_SIZE, which must be at least 4
+   initial allocated size is BUFFER_SIZE, which must be at least 5
    bytes longer than the file name to make room for the initially
-   appended ".~1".  FILELEN is the length of the original file name.
+   appended ".~1~".  FILELEN is the length of the original file name.
+   (The original file name is not necessarily null-terminated;
+   FILELEN does not count trailing slashes after a non-slash.)
    BASE_OFFSET is the offset of the basename in *BUFFER.
    The returned value indicates what kind of backup was found.  If an
    I/O or other read error occurs, use the highest backup number that
@@ -204,16 +206,14 @@ enum numbered_backup_result
    and its file descriptor into *PNEW_FD without closing the stream.  */
 
 static enum numbered_backup_result
-numbered_backup (int dir_fd, char **buffer, size_t buffer_size, size_t filelen,
-                 ptrdiff_t base_offset, DIR **dirpp, int *pnew_fd)
+numbered_backup (int dir_fd, char **buffer, idx_t buffer_size, idx_t filelen,
+                 idx_t base_offset, DIR **dirpp, int *pnew_fd)
 {
   enum numbered_backup_result result = BACKUP_IS_NEW;
   DIR *dirp = *dirpp;
-  struct dirent *dp;
   char *buf = *buffer;
-  size_t versionlenmax = 1;
-  char *base = buf + base_offset;
-  size_t baselen = base_len (base);
+  idx_t versionlenmax = 1;
+  idx_t baselen = filelen - base_offset;
 
   if (dirp)
     rewinddir (dirp);
@@ -222,6 +222,7 @@ numbered_backup (int dir_fd, char **buffer, size_t buffer_size, size_t filelen,
       /* Temporarily modify the buffer into its parent directory name,
          open the directory, and then restore the buffer.  */
       char tmp[sizeof "."];
+      char *base = buf + base_offset;
       memcpy (tmp, base, sizeof ".");
       strcpy (base, ".");
       dirp = opendirat (dir_fd, buf, 0, pnew_fd);
@@ -234,20 +235,15 @@ numbered_backup (int dir_fd, char **buffer, size_t buffer_size, size_t filelen,
       *dirpp = dirp;
     }
 
-  while ((dp = readdir (dirp)) != NULL)
+  for (struct dirent *dp; (dp = readdir (dirp)) != NULL; )
     {
-      char const *p;
-      char *q;
-      bool all_9s;
-      size_t versionlen;
-
       if (_D_EXACT_NAMLEN (dp) < baselen + 4)
         continue;
 
       if (memcmp (buf + base_offset, dp->d_name, baselen + 2) != 0)
         continue;
 
-      p = dp->d_name + baselen + 2;
+      char const *p = dp->d_name + baselen + 2;
 
       /* Check whether this file has a version number and if so,
          whether it is larger.  Use string operations rather than
@@ -255,7 +251,8 @@ numbered_backup (int dir_fd, char **buffer, size_t buffer_size, size_t filelen,
 
       if (! ('1' <= *p && *p <= '9'))
         continue;
-      all_9s = (*p == '9');
+      bool all_9s = (*p == '9');
+      idx_t versionlen;
       for (versionlen = 1; ISDIGIT (p[versionlen]); versionlen++)
         all_9s &= (p[versionlen] == '9');
 
@@ -271,12 +268,13 @@ numbered_backup (int dir_fd, char **buffer, size_t buffer_size, size_t filelen,
 
       versionlenmax = all_9s + versionlen;
       result = (all_9s ? BACKUP_IS_LONGER : BACKUP_IS_SAME_LENGTH);
-      size_t new_buffer_size = filelen + 2 + versionlenmax + 2;
+      idx_t new_buffer_size = filelen + 2 + versionlenmax + 2;
       if (buffer_size < new_buffer_size)
         {
-          if (! xalloc_oversized (new_buffer_size, 2))
-            new_buffer_size *= 2;
-          char *new_buf = realloc (buf, new_buffer_size);
+          idx_t grown;
+          if (! INT_ADD_WRAPV (new_buffer_size, new_buffer_size >> 1, &grown))
+            new_buffer_size = grown;
+          char *new_buf = irealloc (buf, new_buffer_size);
           if (!new_buf)
             {
               *buffer = buf;
@@ -285,7 +283,7 @@ numbered_backup (int dir_fd, char **buffer, size_t buffer_size, size_t filelen,
           buf = new_buf;
           buffer_size = new_buffer_size;
         }
-      q = buf + filelen;
+      char *q = buf + filelen;
       *q++ = '.';
       *q++ = '~';
       *q = '0';
@@ -314,31 +312,32 @@ char *
 backupfile_internal (int dir_fd, char const *file,
                      enum backup_type backup_type, bool rename)
 {
-  ptrdiff_t base_offset = last_component (file) - file;
-  size_t filelen = base_offset + strlen (file + base_offset);
+  idx_t base_offset = last_component (file) - file;
+  idx_t filelen = base_offset + base_len (file + base_offset);
 
   if (! simple_backup_suffix)
     set_simple_backup_suffix (NULL);
 
   /* Allow room for simple or ".~N~" backups.  The guess must be at
      least sizeof ".~1~", but otherwise will be adjusted as needed.  */
-  size_t simple_backup_suffix_size = strlen (simple_backup_suffix) + 1;
-  size_t backup_suffix_size_guess = simple_backup_suffix_size;
+  idx_t simple_backup_suffix_size = strlen (simple_backup_suffix) + 1;
+  idx_t backup_suffix_size_guess = simple_backup_suffix_size;
   enum { GUESS = sizeof ".~12345~" };
   if (backup_suffix_size_guess < GUESS)
     backup_suffix_size_guess = GUESS;
 
-  ssize_t ssize = filelen + backup_suffix_size_guess + 1;
-  char *s = malloc (ssize);
+  idx_t ssize = filelen + backup_suffix_size_guess + 1;
+  char *s = imalloc (ssize);
   if (!s)
     return s;
 
   DIR *dirp = NULL;
-  int sdir = -1;
-  size_t base_max = 0;
+  int sdir = AT_FDCWD;
+  idx_t base_max = 0;
   while (true)
     {
-      memcpy (s, file, filelen + 1);
+      bool extended = true;
+      memcpy (s, file, filelen);
 
       if (backup_type == simple_backups)
         memcpy (s + filelen, simple_backup_suffix, simple_backup_suffix_size);
@@ -358,7 +357,7 @@ backupfile_internal (int dir_fd, char const *file,
               }
             FALLTHROUGH;
           case BACKUP_IS_LONGER:
-            check_extension (s, filelen, '~', sdir, &base_max);
+            extended = check_extension (s, filelen, '~', sdir, &base_max);
             break;
 
           case BACKUP_NOMEM:
@@ -372,16 +371,13 @@ backupfile_internal (int dir_fd, char const *file,
       if (! rename)
         break;
 
-      if (sdir < 0)
-        {
-          sdir = AT_FDCWD;
-          base_offset = 0;
-        }
+      int olddirfd = sdir < 0 ? dir_fd : sdir;
+      idx_t offset = sdir < 0 ? 0 : base_offset;
       unsigned flags = backup_type == simple_backups ? 0 : RENAME_NOREPLACE;
-      if (renameatu (AT_FDCWD, file, sdir, s + base_offset, flags) == 0)
+      if (renameatu (olddirfd, file + offset, sdir, s + offset, flags) == 0)
         break;
       int e = errno;
-      if (e != EEXIST)
+      if (! (e == EEXIST && extended))
         {
           if (dirp)
             closedir (dirp);

lib/backupfile.h

@@ -1,11 +1,11 @@
 /* backupfile.h -- declarations for making Emacs style backup file names
 
-   Copyright (C) 1990-1992, 1997-1999, 2003-2004, 2009-2020 Free Software
+   Copyright (C) 1990-1992, 1997-1999, 2003-2004, 2009-2022 Free Software
    Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
-   the Free Software Foundation; either version 3 of the License, or
+   the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.
 
    This program is distributed in the hope that it will be useful,
@@ -19,8 +19,11 @@
 #ifndef BACKUPFILE_H_
 #define BACKUPFILE_H_
 
+/* Get AT_FDCWD, as a convenience for users of this file.  */
 #include <fcntl.h>
 
+#include <stdlib.h>
+
 #ifdef __cplusplus
 extern "C" {
 #endif
@@ -49,8 +52,11 @@ enum backup_type
 extern char const *simple_backup_suffix;
 
 void set_simple_backup_suffix (char const *);
-char *backup_file_rename (int, char const *, enum backup_type);
-char *find_backup_file_name (int, char const *, enum backup_type);
+char *backup_file_rename (int, char const *, enum backup_type)
+  _GL_ATTRIBUTE_MALLOC _GL_ATTRIBUTE_DEALLOC_FREE;
+char *find_backup_file_name (int, char const *, enum backup_type)
+  _GL_ATTRIBUTE_MALLOC _GL_ATTRIBUTE_DEALLOC_FREE
+  _GL_ATTRIBUTE_RETURNS_NONNULL;
 enum backup_type get_version (char const *context, char const *arg);
 enum backup_type xget_version (char const *context, char const *arg);
 

lib/base32.c

@@ -1,18 +1,18 @@
 /* base32.c -- Encode binary data using printable characters.
-   Copyright (C) 1999-2001, 2004-2006, 2009-2020 Free Software Foundation, Inc.
+   Copyright (C) 1999-2001, 2004-2006, 2009-2022 Free Software Foundation, Inc.
 
-   This program is free software; you can redistribute it and/or modify
-   it under the terms of the GNU General Public License as published by
-   the Free Software Foundation; either version 3, or (at your option)
-   any later version.
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
 
-   This program is distributed in the hope that it will be useful,
+   This file is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-   GNU General Public License for more details.
+   GNU Lesser General Public License for more details.
 
-   You should have received a copy of the GNU General Public License
-   along with this program; if not, see <https://www.gnu.org/licenses/>.  */
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
 
 /* Adapted from Simon Josefsson's base64 code by Gijs van Tulder.
  *
@@ -28,7 +28,7 @@
  *   FAIL: memory allocation error
  * OK: data in OUT/OUTLEN
  *
- * size_t outlen = base32_encode_alloc (in, inlen, &out);
+ * idx_t outlen = base32_encode_alloc (in, inlen, &out);
  * if (out == NULL && outlen == 0 && inlen != 0)
  *   FAIL: input too long
  * if (out == NULL)
@@ -42,15 +42,17 @@
 /* Get prototype. */
 #include "base32.h"
 
-/* Get malloc. */
-#include <stdlib.h>
+/* Get imalloc. */
+#include <ialloc.h>
+
+#include <intprops.h>
 
 /* Get UCHAR_MAX. */
 #include <limits.h>
 
 #include <string.h>
 
-/* C89 compliant way to cast 'char' to 'unsigned char'. */
+/* Convert 'char' to 'unsigned char' without casting.  */
 static unsigned char
 to_uchar (char ch)
 {
@@ -62,8 +64,8 @@ to_uchar (char ch)
    possible.  If OUTLEN is larger than BASE32_LENGTH(INLEN), also zero
    terminate the output buffer. */
 void
-base32_encode (const char *restrict in, size_t inlen,
-               char *restrict out, size_t outlen)
+base32_encode (const char *restrict in, idx_t inlen,
+               char *restrict out, idx_t outlen)
 {
   static const char b32str[32] =
     "ABCDEFGHIJKLMNOPQRSTUVWXYZ234567";
@@ -136,24 +138,21 @@ base32_encode (const char *restrict in, size_t inlen,
    memory allocation failed, OUT is set to NULL, and the return value
    indicates length of the requested memory block, i.e.,
    BASE32_LENGTH(inlen) + 1. */
-size_t
-base32_encode_alloc (const char *in, size_t inlen, char **out)
+idx_t
+base32_encode_alloc (const char *in, idx_t inlen, char **out)
 {
-  size_t outlen = 1 + BASE32_LENGTH (inlen);
-
   /* Check for overflow in outlen computation.
-   *
-   * If there is no overflow, outlen >= inlen.
-   *
-   * TODO Is this a sufficient check?  (See the notes in base64.c.)
-   */
-  if (inlen > outlen)
+     Treat negative INLEN as overflow, for better compatibility with
+     pre-2021-08-27 API, which used size_t.  */
+  idx_t in_over_5 = inlen / 5 + (inlen % 5 != 0), outlen;
+  if (! INT_MULTIPLY_OK (in_over_5, 8, &outlen) || inlen < 0)
     {
       *out = NULL;
       return 0;
     }
+  outlen++;
 
-  *out = malloc (outlen);
+  *out = imalloc (outlen);
   if (!*out)
     return outlen;
 
@@ -305,7 +304,7 @@ base32_decode_ctx_init (struct base32_decode_context *ctx)
 static char *
 get_8 (struct base32_decode_context *ctx,
        char const *restrict *in, char const *restrict in_end,
-       size_t *n_non_newline)
+       idx_t *n_non_newline)
 {
   if (ctx->i == 8)
     ctx->i = 0;
@@ -357,14 +356,14 @@ get_8 (struct base32_decode_context *ctx,
    *OUT to point to the byte after the last one written, and decrement
    *OUTLEN to reflect the number of bytes remaining in *OUT.  */
 static bool
-decode_8 (char const *restrict in, size_t inlen,
-          char *restrict *outp, size_t *outleft)
+decode_8 (char const *restrict in, idx_t inlen,
+          char *restrict *outp, idx_t *outleft)
 {
   char *out = *outp;
   if (inlen < 8)
     return false;
 
-  if (!isbase32 (in[0]) || !isbase32 (in[1]) )
+  if (!isbase32 (in[0]) || !isbase32 (in[1]))
     return false;
 
   if (*outleft)
@@ -468,10 +467,10 @@ decode_8 (char const *restrict in, size_t inlen,
 
 bool
 base32_decode_ctx (struct base32_decode_context *ctx,
-                   const char *restrict in, size_t inlen,
-                   char *restrict out, size_t *outlen)
+                   const char *restrict in, idx_t inlen,
+                   char *restrict out, idx_t *outlen)
 {
-  size_t outleft = *outlen;
+  idx_t outleft = *outlen;
   bool ignore_newlines = ctx != NULL;
   bool flush_ctx = false;
   unsigned int ctx_i = 0;
@@ -485,7 +484,7 @@ base32_decode_ctx (struct base32_decode_context *ctx,
 
   while (true)
     {
-      size_t outleft_save = outleft;
+      idx_t outleft_save = outleft;
       if (ctx_i == 0 && !flush_ctx)
         {
           while (true)
@@ -559,17 +558,17 @@ base32_decode_ctx (struct base32_decode_context *ctx,
    undefined. */
 bool
 base32_decode_alloc_ctx (struct base32_decode_context *ctx,
-                         const char *in, size_t inlen, char **out,
-                         size_t *outlen)
+                         const char *in, idx_t inlen, char **out,
+                         idx_t *outlen)
 {
   /* This may allocate a few bytes too many, depending on input,
      but it's not worth the extra CPU time to compute the exact size.
      The exact size is 5 * inlen / 8, minus one or more bytes if the
      input is padded with one or more "=".
-     Dividing before multiplying avoids the possibility of overflow.  */
-  size_t needlen = 5 * (inlen / 8) + 5;
+     Shifting before multiplying avoids the possibility of overflow.  */
+  idx_t needlen = 5 * ((inlen >> 3) + 1);
 
-  *out = malloc (needlen);
+  *out = imalloc (needlen);
   if (!*out)
     return true;
 

lib/base32.h

@@ -1,25 +1,25 @@
 /* base32.h -- Encode binary data using printable characters.
-   Copyright (C) 2004-2006, 2009-2020 Free Software Foundation, Inc.
+   Copyright (C) 2004-2006, 2009-2022 Free Software Foundation, Inc.
    Adapted from Simon Josefsson's base64 code by Gijs van Tulder.
 
-   This program is free software; you can redistribute it and/or modify
-   it under the terms of the GNU General Public License as published by
-   the Free Software Foundation; either version 3, or (at your option)
-   any later version.
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
 
-   This program is distributed in the hope that it will be useful,
+   This file is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-   GNU General Public License for more details.
+   GNU Lesser General Public License for more details.
 
-   You should have received a copy of the GNU General Public License
-   along with this program; if not, see <https://www.gnu.org/licenses/>.  */
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
 
 #ifndef BASE32_H
 # define BASE32_H
 
-/* Get size_t. */
-# include <stddef.h>
+/* Get idx_t. */
+# include <idx.h>
 
 /* Get bool. */
 # include <stdbool.h>
@@ -30,26 +30,26 @@
 
 struct base32_decode_context
 {
-  unsigned int i;
+  int i;
   char buf[8];
 };
 
 extern bool isbase32 (char ch) _GL_ATTRIBUTE_CONST;
 
-extern void base32_encode (const char *restrict in, size_t inlen,
-                           char *restrict out, size_t outlen);
+extern void base32_encode (const char *restrict in, idx_t inlen,
+                           char *restrict out, idx_t outlen);
 
-extern size_t base32_encode_alloc (const char *in, size_t inlen, char **out);
+extern idx_t base32_encode_alloc (const char *in, idx_t inlen, char **out);
 
 extern void base32_decode_ctx_init (struct base32_decode_context *ctx);
 
 extern bool base32_decode_ctx (struct base32_decode_context *ctx,
-                               const char *restrict in, size_t inlen,
-                               char *restrict out, size_t *outlen);
+                               const char *restrict in, idx_t inlen,
+                               char *restrict out, idx_t *outlen);
 
 extern bool base32_decode_alloc_ctx (struct base32_decode_context *ctx,
-                                     const char *in, size_t inlen,
-                                     char **out, size_t *outlen);
+                                     const char *in, idx_t inlen,
+                                     char **out, idx_t *outlen);
 
 #define base32_decode(in, inlen, out, outlen) \
         base32_decode_ctx (NULL, in, inlen, out, outlen)

lib/base64.c

@@ -1,18 +1,18 @@
 /* base64.c -- Encode binary data using printable characters.
-   Copyright (C) 1999-2001, 2004-2006, 2009-2020 Free Software Foundation, Inc.
+   Copyright (C) 1999-2001, 2004-2006, 2009-2022 Free Software Foundation, Inc.
 
-   This program is free software; you can redistribute it and/or modify
-   it under the terms of the GNU General Public License as published by
-   the Free Software Foundation; either version 3, or (at your option)
-   any later version.
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
 
-   This program is distributed in the hope that it will be useful,
+   This file is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-   GNU General Public License for more details.
+   GNU Lesser General Public License for more details.
 
-   You should have received a copy of the GNU General Public License
-   along with this program; if not, see <https://www.gnu.org/licenses/>.  */
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
 
 /* Written by Simon Josefsson.  Partially adapted from GNU MailUtils
  * (mailbox/filter_trans.c, as of 2004-11-28).  Improved by review
@@ -30,7 +30,7 @@
  *   FAIL: memory allocation error
  * OK: data in OUT/OUTLEN
  *
- * size_t outlen = base64_encode_alloc (in, inlen, &out);
+ * idx_t outlen = base64_encode_alloc (in, inlen, &out);
  * if (out == NULL && outlen == 0 && inlen != 0)
  *   FAIL: input too long
  * if (out == NULL)
@@ -44,15 +44,17 @@
 /* Get prototype. */
 #include "base64.h"
 
-/* Get malloc. */
-#include <stdlib.h>
+/* Get imalloc. */
+#include <ialloc.h>
+
+#include <intprops.h>
 
 /* Get UCHAR_MAX. */
 #include <limits.h>
 
 #include <string.h>
 
-/* C89 compliant way to cast 'char' to 'unsigned char'. */
+/* Convert 'char' to 'unsigned char' without casting.  */
 static unsigned char
 to_uchar (char ch)
 {
@@ -66,7 +68,7 @@ static const char b64c[64] =
    to be of length >= BASE64_LENGTH(INLEN), and INLEN needs to be
    a multiple of 3.  */
 static void
-base64_encode_fast (const char *restrict in, size_t inlen, char *restrict out)
+base64_encode_fast (const char *restrict in, idx_t inlen, char *restrict out)
 {
   while (inlen)
     {
@@ -85,8 +87,8 @@ base64_encode_fast (const char *restrict in, size_t inlen, char *restrict out)
    possible.  If OUTLEN is larger than BASE64_LENGTH(INLEN), also zero
    terminate the output buffer. */
 void
-base64_encode (const char *restrict in, size_t inlen,
-               char *restrict out, size_t outlen)
+base64_encode (const char *restrict in, idx_t inlen,
+               char *restrict out, idx_t outlen)
 {
   /* Note this outlen constraint can be enforced at compile time.
      I.E. that the output buffer is exactly large enough to hold
@@ -95,7 +97,7 @@ base64_encode (const char *restrict in, size_t inlen,
      at the end of input.  However the common case when reading
      large inputs is to have both constraints satisfied, so we depend
      on both in base_encode_fast().  */
-  if (outlen % 4 == 0 && inlen == outlen / 4 * 3)
+  if (outlen % 4 == 0 && inlen == (outlen >> 2) * 3)
     {
       base64_encode_fast (in, inlen, out);
       return;
@@ -141,30 +143,21 @@ base64_encode (const char *restrict in, size_t inlen,
    memory allocation failed, OUT is set to NULL, and the return value
    indicates length of the requested memory block, i.e.,
    BASE64_LENGTH(inlen) + 1. */
-size_t
-base64_encode_alloc (const char *in, size_t inlen, char **out)
+idx_t
+base64_encode_alloc (const char *in, idx_t inlen, char **out)
 {
-  size_t outlen = 1 + BASE64_LENGTH (inlen);
-
   /* Check for overflow in outlen computation.
-   *
-   * If there is no overflow, outlen >= inlen.
-   *
-   * If the operation (inlen + 2) overflows then it yields at most +1, so
-   * outlen is 0.
-   *
-   * If the multiplication overflows, we lose at least half of the
-   * correct value, so the result is < ((inlen + 2) / 3) * 2, which is
-   * less than (inlen + 2) * 0.66667, which is less than inlen as soon as
-   * (inlen > 4).
-   */
-  if (inlen > outlen)
+     Treat negative INLEN as overflow, for better compatibility with
+     pre-2021-08-27 API, which used size_t.  */
+  idx_t in_over_3 = inlen / 3 + (inlen % 3 != 0), outlen;
+  if (! INT_MULTIPLY_OK (in_over_3, 4, &outlen) || inlen < 0)
     {
       *out = NULL;
       return 0;
     }
+  outlen++;
 
-  *out = malloc (outlen);
+  *out = imalloc (outlen);
   if (!*out)
     return outlen;
 
@@ -348,7 +341,7 @@ base64_decode_ctx_init (struct base64_decode_context *ctx)
 static char *
 get_4 (struct base64_decode_context *ctx,
        char const *restrict *in, char const *restrict in_end,
-       size_t *n_non_newline)
+       idx_t *n_non_newline)
 {
   if (ctx->i == 4)
     ctx->i = 0;
@@ -400,8 +393,8 @@ get_4 (struct base64_decode_context *ctx,
    *OUT to point to the byte after the last one written, and decrement
    *OUTLEN to reflect the number of bytes remaining in *OUT.  */
 static bool
-decode_4 (char const *restrict in, size_t inlen,
-          char *restrict *outp, size_t *outleft)
+decode_4 (char const *restrict in, idx_t inlen,
+          char *restrict *outp, idx_t *outleft)
 {
   char *out = *outp;
   if (inlen < 2)
@@ -486,10 +479,10 @@ decode_4 (char const *restrict in, size_t inlen,
 
 bool
 base64_decode_ctx (struct base64_decode_context *ctx,
-                   const char *restrict in, size_t inlen,
-                   char *restrict out, size_t *outlen)
+                   const char *restrict in, idx_t inlen,
+                   char *restrict out, idx_t *outlen)
 {
-  size_t outleft = *outlen;
+  idx_t outleft = *outlen;
   bool ignore_newlines = ctx != NULL;
   bool flush_ctx = false;
   unsigned int ctx_i = 0;
@@ -503,7 +496,7 @@ base64_decode_ctx (struct base64_decode_context *ctx,
 
   while (true)
     {
-      size_t outleft_save = outleft;
+      idx_t outleft_save = outleft;
       if (ctx_i == 0 && !flush_ctx)
         {
           while (true)
@@ -577,17 +570,17 @@ base64_decode_ctx (struct base64_decode_context *ctx,
    undefined. */
 bool
 base64_decode_alloc_ctx (struct base64_decode_context *ctx,
-                         const char *in, size_t inlen, char **out,
-                         size_t *outlen)
+                         const char *in, idx_t inlen, char **out,
+                         idx_t *outlen)
 {
   /* This may allocate a few bytes too many, depending on input,
      but it's not worth the extra CPU time to compute the exact size.
      The exact size is 3 * (inlen + (ctx ? ctx->i : 0)) / 4, minus 1 if the
      input ends with "=" and minus another 1 if the input ends with "==".
-     Dividing before multiplying avoids the possibility of overflow.  */
-  size_t needlen = 3 * (inlen / 4) + 3;
+     Shifting before multiplying avoids the possibility of overflow.  */
+  idx_t needlen = 3 * ((inlen >> 2) + 1);
 
-  *out = malloc (needlen);
+  *out = imalloc (needlen);
   if (!*out)
     return true;
 

lib/base64.h

@@ -1,25 +1,25 @@
 /* base64.h -- Encode binary data using printable characters.
-   Copyright (C) 2004-2006, 2009-2020 Free Software Foundation, Inc.
+   Copyright (C) 2004-2006, 2009-2022 Free Software Foundation, Inc.
    Written by Simon Josefsson.
 
-   This program is free software; you can redistribute it and/or modify
-   it under the terms of the GNU General Public License as published by
-   the Free Software Foundation; either version 3, or (at your option)
-   any later version.
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
 
-   This program is distributed in the hope that it will be useful,
+   This file is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-   GNU General Public License for more details.
+   GNU Lesser General Public License for more details.
 
-   You should have received a copy of the GNU General Public License
-   along with this program; if not, see <https://www.gnu.org/licenses/>.  */
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
 
 #ifndef BASE64_H
 # define BASE64_H
 
-/* Get size_t. */
-# include <stddef.h>
+/* Get idx_t.  */
+# include <idx.h>
 
 /* Get bool. */
 # include <stdbool.h>
@@ -34,26 +34,26 @@ extern "C" {
 
 struct base64_decode_context
 {
-  unsigned int i;
+  int i;
   char buf[4];
 };
 
 extern bool isbase64 (char ch) _GL_ATTRIBUTE_CONST;
 
-extern void base64_encode (const char *restrict in, size_t inlen,
-                           char *restrict out, size_t outlen);
+extern void base64_encode (const char *restrict in, idx_t inlen,
+                           char *restrict out, idx_t outlen);
 
-extern size_t base64_encode_alloc (const char *in, size_t inlen, char **out);
+extern idx_t base64_encode_alloc (const char *in, idx_t inlen, char **out);
 
 extern void base64_decode_ctx_init (struct base64_decode_context *ctx);
 
 extern bool base64_decode_ctx (struct base64_decode_context *ctx,
-                               const char *restrict in, size_t inlen,
-                               char *restrict out, size_t *outlen);
+                               const char *restrict in, idx_t inlen,
+                               char *restrict out, idx_t *outlen);
 
 extern bool base64_decode_alloc_ctx (struct base64_decode_context *ctx,
-                                     const char *in, size_t inlen,
-                                     char **out, size_t *outlen);
+                                     const char *in, idx_t inlen,
+                                     char **out, idx_t *outlen);
 
 #define base64_decode(in, inlen, out, outlen) \
         base64_decode_ctx (NULL, in, inlen, out, outlen)

lib/basename-lgpl.c

@@ -1,37 +1,37 @@
 /* basename.c -- return the last element in a file name
 
-   Copyright (C) 1990, 1998-2001, 2003-2006, 2009-2020 Free Software
+   Copyright (C) 1990, 1998-2001, 2003-2006, 2009-2022 Free Software
    Foundation, Inc.
 
-   This program is free software: you can redistribute it and/or modify
-   it under the terms of the GNU General Public License as published by
-   the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
 
-   This program is distributed in the hope that it will be useful,
+   This file is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-   GNU General Public License for more details.
+   GNU Lesser General Public License for more details.
 
-   You should have received a copy of the GNU General Public License
+   You should have received a copy of the GNU Lesser General Public License
    along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
 
 #include <config.h>
 
-#include "dirname.h"
+/* Specification.  */
+#include "basename-lgpl.h"
 
+#include <stdbool.h>
 #include <string.h>
 
-/* Return the address of the last file name component of NAME.  If
-   NAME has no relative file name components because it is a file
-   system root, return the empty string.  */
+#include "filename.h"
 
 char *
 last_component (char const *name)
 {
   char const *base = name + FILE_SYSTEM_PREFIX_LEN (name);
   char const *p;
-  bool saw_slash = false;
+  bool last_was_slash = false;
 
   while (ISSLASH (*base))
     base++;
@@ -39,21 +39,17 @@ last_component (char const *name)
   for (p = base; *p; p++)
     {
       if (ISSLASH (*p))
-        saw_slash = true;
-      else if (saw_slash)
+        last_was_slash = true;
+      else if (last_was_slash)
         {
           base = p;
-          saw_slash = false;
+          last_was_slash = false;
         }
     }
 
   return (char *) base;
 }
 
-/* Return the length of the basename NAME.  Typically NAME is the
-   value returned by base_name or last_component.  Act like strlen
-   (NAME), except omit all trailing slashes.  */
-
 size_t
 base_len (char const *name)
 {

lib/basename-lgpl.h

@@ -0,0 +1,78 @@
+/* Extract the last component (base name) of a file name.
+
+   Copyright (C) 1998, 2001, 2003-2006, 2009-2022 Free Software Foundation,
+   Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#ifndef _BASENAME_LGPL_H
+#define _BASENAME_LGPL_H
+
+#include <stddef.h>
+
+#ifndef DOUBLE_SLASH_IS_DISTINCT_ROOT
+# define DOUBLE_SLASH_IS_DISTINCT_ROOT 0
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+/* Return the address of the last file name component of FILENAME.
+   If FILENAME has some trailing slash(es), they are considered to be
+   part of the last component.
+   If FILENAME has no relative file name components because it is a file
+   system root, return the empty string.
+   Examples:
+              FILENAME      RESULT
+              "foo.c"       "foo.c"
+              "foo/bar.c"   "bar.c"
+              "/foo/bar.c"  "bar.c"
+              "foo/bar/"    "bar/"
+              "foo/bar//"   "bar//"
+              "/"           ""
+              "//"          ""
+              ""            ""
+   The return value is a tail of the given FILENAME; do NOT free() it!  */
+
+/* This function was traditionally called 'basename', but we avoid this
+   function name because
+     * Various platforms have different functions in their libc.
+       In particular, the glibc basename(), defined in <string.h>, does
+       not consider trailing slashes to be part of the component:
+              FILENAME      RESULT
+              "foo/bar/"    ""
+              "foo/bar//"   ""
+     * The 'basename' command eliminates trailing slashes and for a root
+       produces a non-empty result:
+              FILENAME      RESULT
+              "foo/bar/"    "bar"
+              "foo/bar//"   "bar"
+              "/"           "/"
+              "//"          "/"
+ */
+extern char *last_component (char const *filename) _GL_ATTRIBUTE_PURE;
+
+/* Return the length of the basename FILENAME.
+   Typically FILENAME is the value returned by base_name or last_component.
+   Act like strlen (FILENAME), except omit all trailing slashes.  */
+extern size_t base_len (char const *filename) _GL_ATTRIBUTE_PURE;
+
+
+#ifdef __cplusplus
+} /* extern "C" */
+#endif
+
+#endif /* _BASENAME_LGPL_H */

lib/basename.c

@@ -1,11 +1,11 @@
 /* basename.c -- return the last element in a file name
 
-   Copyright (C) 1990, 1998-2001, 2003-2006, 2009-2020 Free Software
+   Copyright (C) 1990, 1998-2001, 2003-2006, 2009-2022 Free Software
    Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
-   the Free Software Foundation; either version 3 of the License, or
+   the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.
 
    This program is distributed in the hope that it will be useful,
@@ -22,37 +22,43 @@
 
 #include <string.h>
 #include "xalloc.h"
-#include "xstrndup.h"
 
 char *
 base_name (char const *name)
 {
   char const *base = last_component (name);
-  size_t length;
-
-  /* If there is no last component, then name is a file system root or the
-     empty string.  */
-  if (! *base)
-    return xstrndup (name, base_len (name));
-
-  /* Collapse a sequence of trailing slashes into one.  */
-  length = base_len (base);
-  if (ISSLASH (base[length]))
-    length++;
-
-  /* On systems with drive letters, "a/b:c" must return "./b:c" rather
-     than "b:c" to avoid confusion with a drive letter.  On systems
-     with pure POSIX semantics, this is not an issue.  */
-  if (FILE_SYSTEM_PREFIX_LEN (base))
+  idx_t length;
+  int dotslash_len;
+  if (*base)
+    {
+      length = base_len (base);
+
+      /* Collapse a sequence of trailing slashes into one.  */
+      length += ISSLASH (base[length]);
+
+      /* On systems with drive letters, "a/b:c" must return "./b:c" rather
+         than "b:c" to avoid confusion with a drive letter.  On systems
+         with pure POSIX semantics, this is not an issue.  */
+      dotslash_len = FILE_SYSTEM_PREFIX_LEN (base) != 0 ? 2 : 0;
+    }
+  else
+    {
+      /* There is no last component, so NAME is a file system root or
+         the empty string.  */
+      base = name;
+      length = base_len (base);
+      dotslash_len = 0;
+    }
+
+  char *p = ximalloc (dotslash_len + length + 1);
+  if (dotslash_len)
     {
-      char *p = xmalloc (length + 3);
       p[0] = '.';
       p[1] = '/';
-      memcpy (p + 2, base, length);
-      p[length + 2] = '\0';
-      return p;
     }
 
   /* Finally, copy the basename.  */
-  return xstrndup (base, length);
+  memcpy (p + dotslash_len, base, length);
+  p[dotslash_len + length] = '\0';
+  return p;
 }

lib/binary-io.c

@@ -1,17 +1,17 @@
 /* Binary mode I/O.
-   Copyright 2017-2020 Free Software Foundation, Inc.
+   Copyright 2017-2022 Free Software Foundation, Inc.
 
-   This program is free software: you can redistribute it and/or modify
-   it under the terms of the GNU General Public License as published by
-   the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
 
-   This program is distributed in the hope that it will be useful,
+   This file is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-   GNU General Public License for more details.
+   GNU Lesser General Public License for more details.
 
-   You should have received a copy of the GNU General Public License
+   You should have received a copy of the GNU Lesser General Public License
    along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
 
 #include <config.h>

lib/binary-io.h

@@ -1,17 +1,17 @@
 /* Binary mode I/O.
-   Copyright (C) 2001, 2003, 2005, 2008-2020 Free Software Foundation, Inc.
+   Copyright (C) 2001, 2003, 2005, 2008-2022 Free Software Foundation, Inc.
 
-   This program is free software: you can redistribute it and/or modify
-   it under the terms of the GNU General Public License as published by
-   the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
 
-   This program is distributed in the hope that it will be useful,
+   This file is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-   GNU General Public License for more details.
+   GNU Lesser General Public License for more details.
 
-   You should have received a copy of the GNU General Public License
+   You should have received a copy of the GNU Lesser General Public License
    along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
 
 #ifndef _BINARY_H
@@ -47,7 +47,7 @@ _GL_INLINE_HEADER_BEGIN
   /* Use a function rather than a macro, to avoid gcc warnings
      "warning: statement with no effect".  */
 BINARY_IO_INLINE int
-__gl_setmode (int fd _GL_UNUSED, int mode _GL_UNUSED)
+__gl_setmode (_GL_UNUSED int fd, _GL_UNUSED int mode)
 {
   return O_BINARY;
 }
@@ -56,7 +56,7 @@ __gl_setmode (int fd _GL_UNUSED, int mode _GL_UNUSED)
 /* Set FD's mode to MODE, which should be either O_TEXT or O_BINARY.
    Return the old mode if successful, -1 (setting errno) on failure.
    Ordinarily this function would be called 'setmode', since that is
-   its name on MS-Windows, but it is called 'set_binary_mode' here
+   its old name on MS-Windows, but it is called 'set_binary_mode' here
    to avoid colliding with a BSD function of another name.  */
 
 #if defined __DJGPP__ || defined __EMX__

lib/bitrotate.c

@@ -1,3 +1,21 @@
+/* Rotate bits in integers.
+
+   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
 #include <config.h>
+
 #define BITROTATE_INLINE _GL_EXTERN_INLINE
 #include "bitrotate.h"

lib/bitrotate.h

@@ -1,17 +1,17 @@
 /* bitrotate.h - Rotate bits in integers
-   Copyright (C) 2008-2020 Free Software Foundation, Inc.
+   Copyright (C) 2008-2022 Free Software Foundation, Inc.
 
-   This program is free software: you can redistribute it and/or modify
-   it under the terms of the GNU General Public License as published by
-   the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
 
-   This program is distributed in the hope that it will be useful,
+   This file is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-   GNU General Public License for more details.
+   GNU Lesser General Public License for more details.
 
-   You should have received a copy of the GNU General Public License
+   You should have received a copy of the GNU Lesser General Public License
    along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
 
 /* Written by Simon Josefsson <simon@josefsson.org>, 2008. */

lib/btowc.c

@@ -1,18 +1,18 @@
 /* Convert unibyte character to wide character.
-   Copyright (C) 2008, 2010-2020 Free Software Foundation, Inc.
+   Copyright (C) 2008, 2010-2022 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2008.
 
-   This program is free software: you can redistribute it and/or modify
-   it under the terms of the GNU General Public License as published by
-   the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
 
-   This program is distributed in the hope that it will be useful,
+   This file is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-   GNU General Public License for more details.
+   GNU Lesser General Public License for more details.
 
-   You should have received a copy of the GNU General Public License
+   You should have received a copy of the GNU Lesser General Public License
    along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
 
 #include <config.h>

lib/buffer-lcm.c

@@ -1,6 +1,6 @@
 /* buffer-lcm.c - compute a good buffer size for dealing with two files
 
-   Copyright (C) 2002-2020 Free Software Foundation, Inc.
+   Copyright (C) 2002-2022 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by

lib/byteswap.in.h

@@ -1,18 +1,18 @@
 /* byteswap.h - Byte swapping
-   Copyright (C) 2005, 2007, 2009-2020 Free Software Foundation, Inc.
+   Copyright (C) 2005, 2007, 2009-2022 Free Software Foundation, Inc.
    Written by Oskar Liljeblad <oskar@osk.mine.nu>, 2005.
 
-   This program is free software: you can redistribute it and/or modify
-   it under the terms of the GNU General Public License as published by
-   the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
 
-   This program is distributed in the hope that it will be useful,
+   This file is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-   GNU General Public License for more details.
+   GNU Lesser General Public License for more details.
 
-   You should have received a copy of the GNU General Public License
+   You should have received a copy of the GNU Lesser General Public License
    along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
 
 #ifndef _GL_BYTESWAP_H

lib/c++defs.h

@@ -1,17 +1,17 @@
 /* C++ compatible function declaration macros.
-   Copyright (C) 2010-2020 Free Software Foundation, Inc.
+   Copyright (C) 2010-2022 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
+   under the terms of the GNU Lesser General Public License as published
+   by the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.
 
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-   General Public License for more details.
+   Lesser General Public License for more details.
 
-   You should have received a copy of the GNU General Public License
+   You should have received a copy of the GNU Lesser General Public License
    along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
 
 #ifndef _GL_CXXDEFS_H
@@ -146,6 +146,16 @@
     _GL_EXTERN_C int _gl_cxxalias_dummy
 #endif
 
+/* _GL_CXXALIAS_MDA (func, rettype, parameters);
+   is to be used when func is a Microsoft deprecated alias, on native Windows.
+   It declares a C++ alias called GNULIB_NAMESPACE::func
+   that redirects to _func, if GNULIB_NAMESPACE is defined.
+   Example:
+     _GL_CXXALIAS_MDA (open, int, (const char *filename, int flags, ...));
+ */
+#define _GL_CXXALIAS_MDA(func,rettype,parameters) \
+  _GL_CXXALIAS_RPL_1 (func, _##func, rettype, parameters)
+
 /* _GL_CXXALIAS_RPL_CAST_1 (func, rpl_func, rettype, parameters);
    is like  _GL_CXXALIAS_RPL_1 (func, rpl_func, rettype, parameters);
    except that the C function rpl_func may have a slightly different
@@ -171,6 +181,14 @@
     _GL_EXTERN_C int _gl_cxxalias_dummy
 #endif
 
+/* _GL_CXXALIAS_MDA_CAST (func, rettype, parameters);
+   is like  _GL_CXXALIAS_MDA (func, rettype, parameters);
+   except that the C function func may have a slightly different declaration.
+   A cast is used to silence the "invalid conversion" error that would
+   otherwise occur.  */
+#define _GL_CXXALIAS_MDA_CAST(func,rettype,parameters) \
+  _GL_CXXALIAS_RPL_CAST_1 (func, _##func, rettype, parameters)
+
 /* _GL_CXXALIAS_SYS (func, rettype, parameters);
    declares a C++ alias called GNULIB_NAMESPACE::func
    that redirects to the system provided function func, if GNULIB_NAMESPACE
@@ -268,7 +286,7 @@
    _GL_CXXALIASWARN_2 (func, namespace)
 /* To work around GCC bug <https://gcc.gnu.org/bugzilla/show_bug.cgi?id=43881>,
    we enable the warning only when not optimizing.  */
-# if !__OPTIMIZE__
+# if !(defined __GNUC__ && !defined __clang__ && __OPTIMIZE__)
 #  define _GL_CXXALIASWARN_2(func,namespace) \
     _GL_WARN_ON_USE (func, \
                      "The symbol ::" #func " refers to the system function. " \
@@ -296,9 +314,9 @@
    _GL_CXXALIASWARN1_2 (func, rettype, parameters_and_attributes, namespace)
 /* To work around GCC bug <https://gcc.gnu.org/bugzilla/show_bug.cgi?id=43881>,
    we enable the warning only when not optimizing.  */
-# if !__OPTIMIZE__
+# if !(defined __GNUC__ && !defined __clang__ && __OPTIMIZE__)
 #  define _GL_CXXALIASWARN1_2(func,rettype,parameters_and_attributes,namespace) \
-    _GL_WARN_ON_USE_CXX (func, rettype, parameters_and_attributes, \
+    _GL_WARN_ON_USE_CXX (func, rettype, rettype, parameters_and_attributes, \
                          "The symbol ::" #func " refers to the system function. " \
                          "Use " #namespace "::" #func " instead.")
 # else

lib/c-ctype.c

@@ -1,3 +1,21 @@
+/* Character handling in C locale.
+
+   Copyright (C) 2003-2022 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
 #include <config.h>
+
 #define C_CTYPE_INLINE _GL_EXTERN_INLINE
 #include "c-ctype.h"

lib/c-ctype.h

@@ -5,20 +5,20 @@
    <ctype.h> functions' behaviour depends on the current locale set via
    setlocale.
 
-   Copyright (C) 2000-2003, 2006, 2008-2020 Free Software Foundation, Inc.
+   Copyright (C) 2000-2003, 2006, 2008-2022 Free Software Foundation, Inc.
 
-This program is free software; you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 3 of the License, or
-(at your option) any later version.
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
 
-This program is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-GNU General Public License for more details.
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
 
-You should have received a copy of the GNU General Public License
-along with this program; if not, see <https://www.gnu.org/licenses/>.  */
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
 
 #ifndef C_CTYPE_H
 #define C_CTYPE_H

lib/c-strcase.h

@@ -1,19 +1,19 @@
 /* Case-insensitive string comparison functions in C locale.
-   Copyright (C) 1995-1996, 2001, 2003, 2005, 2009-2020 Free Software
+   Copyright (C) 1995-1996, 2001, 2003, 2005, 2009-2022 Free Software
    Foundation, Inc.
 
-   This program is free software; you can redistribute it and/or modify
-   it under the terms of the GNU General Public License as published by
-   the Free Software Foundation; either version 3, or (at your option)
-   any later version.
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
 
-   This program is distributed in the hope that it will be useful,
+   This file is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-   GNU General Public License for more details.
+   GNU Lesser General Public License for more details.
 
-   You should have received a copy of the GNU General Public License
-   along with this program; if not, see <https://www.gnu.org/licenses/>.  */
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
 
 #ifndef C_STRCASE_H
 #define C_STRCASE_H

lib/c-strcasecmp.c

@@ -1,18 +1,18 @@
 /* c-strcasecmp.c -- case insensitive string comparator in C locale
-   Copyright (C) 1998-1999, 2005-2006, 2009-2020 Free Software Foundation, Inc.
+   Copyright (C) 1998-1999, 2005-2006, 2009-2022 Free Software Foundation, Inc.
 
-   This program is free software; you can redistribute it and/or modify
-   it under the terms of the GNU General Public License as published by
-   the Free Software Foundation; either version 3, or (at your option)
-   any later version.
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
 
-   This program is distributed in the hope that it will be useful,
+   This file is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-   GNU General Public License for more details.
+   GNU Lesser General Public License for more details.
 
-   You should have received a copy of the GNU General Public License
-   along with this program; if not, see <https://www.gnu.org/licenses/>.  */
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
 
 #include <config.h>
 
@@ -52,5 +52,5 @@ c_strcasecmp (const char *s1, const char *s2)
     /* On machines where 'char' and 'int' are types of the same size, the
        difference of two 'unsigned char' values - including the sign bit -
        doesn't fit in an 'int'.  */
-    return (c1 > c2 ? 1 : c1 < c2 ? -1 : 0);
+    return _GL_CMP (c1, c2);
 }

lib/c-strcaseeq.h

@@ -1,17 +1,17 @@
 /* Optimized case-insensitive string comparison in C locale.
-   Copyright (C) 2001-2002, 2007, 2009-2020 Free Software Foundation, Inc.
+   Copyright (C) 2001-2002, 2007, 2009-2022 Free Software Foundation, Inc.
 
-   This program is free software: you can redistribute it and/or modify it
-   under the terms of the GNU General Public License as published
-   by the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
 
-   This program is distributed in the hope that it will be useful,
+   This file is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-   General Public License for more details.
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
 
-   You should have received a copy of the GNU General Public License
+   You should have received a copy of the GNU Lesser General Public License
    along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
 
 /* Written by Bruno Haible <bruno@clisp.org>.  */
@@ -27,7 +27,7 @@
 
 /* Help GCC to generate good code for string comparisons with
    immediate strings. */
-#if defined (__GNUC__) && defined (__OPTIMIZE__)
+#if (defined __GNUC__ || defined __clang__) && defined __OPTIMIZE__
 
 /* Case insensitive comparison of ASCII characters.  */
 # if C_CTYPE_ASCII

lib/c-strncasecmp.c

@@ -1,18 +1,18 @@
 /* c-strncasecmp.c -- case insensitive string comparator in C locale
-   Copyright (C) 1998-1999, 2005-2006, 2009-2020 Free Software Foundation, Inc.
+   Copyright (C) 1998-1999, 2005-2006, 2009-2022 Free Software Foundation, Inc.
 
-   This program is free software; you can redistribute it and/or modify
-   it under the terms of the GNU General Public License as published by
-   the Free Software Foundation; either version 3, or (at your option)
-   any later version.
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
 
-   This program is distributed in the hope that it will be useful,
+   This file is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-   GNU General Public License for more details.
+   GNU Lesser General Public License for more details.
 
-   You should have received a copy of the GNU General Public License
-   along with this program; if not, see <https://www.gnu.org/licenses/>.  */
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
 
 #include <config.h>
 
@@ -52,5 +52,5 @@ c_strncasecmp (const char *s1, const char *s2, size_t n)
     /* On machines where 'char' and 'int' are types of the same size, the
        difference of two 'unsigned char' values - including the sign bit -
        doesn't fit in an 'int'.  */
-    return (c1 > c2 ? 1 : c1 < c2 ? -1 : 0);
+    return _GL_CMP (c1, c2);
 }

lib/c-strtod.c

@@ -1,10 +1,10 @@
 /* Convert string to double, using the C locale.
 
-   Copyright (C) 2003-2004, 2006, 2009-2020 Free Software Foundation, Inc.
+   Copyright (C) 2003-2004, 2006, 2009-2022 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
-   the Free Software Foundation; either version 3 of the License, or
+   the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.
 
    This program is distributed in the hope that it will be useful,

lib/c-strtod.h

@@ -1,10 +1,10 @@
 /* Convert string to double, using the C locale.  -*- coding: utf-8 -*-
 
-   Copyright (C) 2003-2004, 2009-2020 Free Software Foundation, Inc.
+   Copyright (C) 2003-2004, 2009-2022 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
-   the Free Software Foundation; either version 3 of the License, or
+   the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.
 
    This program is distributed in the hope that it will be useful,

lib/c-strtold.c

@@ -1,2 +1,19 @@
+/* Convert string to 'long double' in C locale.
+
+   Copyright (C) 2004-2022 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published
+   by the Free Software Foundation, either version 3 of the License,
+   or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
 #define LONG 1
 #include "c-strtod.c"

lib/calloc.c

@@ -1,70 +1,52 @@
 /* calloc() function that is glibc compatible.
    This wrapper function is required at least on Tru64 UNIX 5.1 and mingw.
-   Copyright (C) 2004-2007, 2009-2020 Free Software Foundation, Inc.
+   Copyright (C) 2004-2007, 2009-2022 Free Software Foundation, Inc.
 
-   This program is free software: you can redistribute it and/or modify
-   it under the terms of the GNU General Public License as published by
-   the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
 
-   This program is distributed in the hope that it will be useful,
+   This file is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-   GNU General Public License for more details.
+   GNU Lesser General Public License for more details.
 
-   You should have received a copy of the GNU General Public License
+   You should have received a copy of the GNU Lesser General Public License
    along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
 
 /* written by Jim Meyering and Bruno Haible */
 
 #include <config.h>
-/* Only the AC_FUNC_CALLOC macro defines 'calloc' already in config.h.  */
-#ifdef calloc
-# define NEED_CALLOC_GNU 1
-# undef calloc
-/* Whereas the gnulib module 'calloc-gnu' defines HAVE_CALLOC_GNU.  */
-#elif GNULIB_CALLOC_GNU && !HAVE_CALLOC_GNU
-# define NEED_CALLOC_GNU 1
-#endif
 
 /* Specification.  */
 #include <stdlib.h>
 
 #include <errno.h>
 
+#include "xalloc-oversized.h"
+
 /* Call the system's calloc below.  */
 #undef calloc
 
-/* Allocate and zero-fill an NxS-byte block of memory from the heap.
-   If N or S is zero, allocate and zero-fill a 1-byte block.  */
+/* Allocate and zero-fill an NxS-byte block of memory from the heap,
+   even if N or S is zero.  */
 
 void *
 rpl_calloc (size_t n, size_t s)
 {
-  void *result;
-
-#if NEED_CALLOC_GNU
   if (n == 0 || s == 0)
-    {
-      n = 1;
-      s = 1;
-    }
-  else
-    {
-      /* Defend against buggy calloc implementations that mishandle
-         size_t overflow.  */
-      size_t bytes = n * s;
-      if (bytes / s != n)
-        {
-          errno = ENOMEM;
-          return NULL;
-        }
-    }
-#endif
+    n = s = 1;
 
-  result = calloc (n, s);
+  if (xalloc_oversized (n, s))
+    {
+      errno = ENOMEM;
+      return NULL;
+    }
 
-#if !HAVE_CALLOC_POSIX
+  void *result = calloc (n, s);
+
+#if !HAVE_MALLOC_POSIX
   if (result == NULL)
     errno = ENOMEM;
 #endif

lib/canon-host.c

@@ -1,20 +1,20 @@
 /* Host name canonicalization
 
-   Copyright (C) 2005-2020 Free Software Foundation, Inc.
+   Copyright (C) 2005-2022 Free Software Foundation, Inc.
 
    Written by Derek Price <derek@ximbiot.com>.
 
-   This program is free software: you can redistribute it and/or modify
-   it under the terms of the GNU General Public License as published by
-   the Free Software Foundation; either version 3, or (at your option)
-   any later version.
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation, either version 3 of the
+   License, or (at your option) any later version.
 
-   This program is distributed in the hope that it will be useful,
+   This file is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-   GNU General Public License for more details.
+   GNU Lesser General Public License for more details.
 
-   You should have received a copy of the GNU General Public License
+   You should have received a copy of the GNU Lesser General Public License
    along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
 
 #include <config.h>

lib/canon-host.h

@@ -1,27 +1,31 @@
 /* Host name canonicalization
 
-   Copyright (C) 2005, 2009-2020 Free Software Foundation, Inc.
+   Copyright (C) 2005, 2009-2022 Free Software Foundation, Inc.
 
    Written by Derek Price <derek@ximbiot.com>
 
-   This program is free software: you can redistribute it and/or modify
-   it under the terms of the GNU General Public License as published by
-   the Free Software Foundation; either version 3, or (at your option)
-   any later version.
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation, either version 3 of the
+   License, or (at your option) any later version.
 
-   This program is distributed in the hope that it will be useful,
+   This file is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-   GNU General Public License for more details.
+   GNU Lesser General Public License for more details.
 
-   You should have received a copy of the GNU General Public License
+   You should have received a copy of the GNU Lesser General Public License
    along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
 
 #ifndef CANON_HOST_H
 # define CANON_HOST_H 1
 
-char *canon_host (char const *host) _GL_ATTRIBUTE_MALLOC;
-char *canon_host_r (char const *host, int *cherror) _GL_ATTRIBUTE_MALLOC;
+# include <stdlib.h>
+
+char *canon_host (char const *host)
+  _GL_ATTRIBUTE_MALLOC _GL_ATTRIBUTE_DEALLOC_FREE;
+char *canon_host_r (char const *host, int *cherror)
+  _GL_ATTRIBUTE_MALLOC _GL_ATTRIBUTE_DEALLOC_FREE;
 
 const char *ch_strerror (void);
 # define ch_strerror_r(cherror) gai_strerror (cherror);

lib/canonicalize.c

@@ -1,9 +1,9 @@
 /* Return the canonical absolute name of a given file.
-   Copyright (C) 1996-2020 Free Software Foundation, Inc.
+   Copyright (C) 1996-2022 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
-   the Free Software Foundation; either version 3 of the License, or
+   the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.
 
    This program is distributed in the hope that it will be useful,
@@ -19,29 +19,31 @@
 #include "canonicalize.h"
 
 #include <errno.h>
-#include <stdlib.h>
+#include <fcntl.h>
+#include <stdbool.h>
 #include <string.h>
 #include <sys/stat.h>
 #include <unistd.h>
 
-#include "areadlink.h"
+#include <filename.h>
+#include <idx.h>
+#include <intprops.h>
+#include <scratch_buffer.h>
+
+#include "attribute.h"
 #include "file-set.h"
 #include "hash-triple.h"
-#include "pathmax.h"
 #include "xalloc.h"
-#include "xgetcwd.h"
-#include "dosname.h"
 
-#define MULTIPLE_BITS_SET(i) (((i) & ((i) - 1)) != 0)
-
-/* In this file, we cannot handle file names longer than PATH_MAX.
-   On systems with no file name length limit, use a fallback.  */
-#ifndef PATH_MAX
-# define PATH_MAX 8192
+/* Suppress bogus GCC -Wmaybe-uninitialized warnings.  */
+#if defined GCC_LINT || defined lint
+# define IF_LINT(Code) Code
+#else
+# define IF_LINT(Code) /* empty */
 #endif
 
 #ifndef DOUBLE_SLASH_IS_DISTINCT_ROOT
-# define DOUBLE_SLASH_IS_DISTINCT_ROOT 0
+# define DOUBLE_SLASH_IS_DISTINCT_ROOT false
 #endif
 
 #if ISSLASH ('\\')
@@ -50,6 +52,73 @@
 # define SLASHES "/"
 #endif
 
+/* Return true if FILE's existence can be shown, false (setting errno)
+   otherwise.  Follow symbolic links.  */
+static bool
+file_accessible (char const *file)
+{
+# if HAVE_FACCESSAT
+  return faccessat (AT_FDCWD, file, F_OK, AT_EACCESS) == 0;
+# else
+  struct stat st;
+  return stat (file, &st) == 0 || errno == EOVERFLOW;
+# endif
+}
+
+/* True if concatenating END as a suffix to a file name means that the
+   code needs to check that the file name is that of a searchable
+   directory, since the canonicalize_filename_mode_stk code won't
+   check this later anyway when it checks an ordinary file name
+   component within END.  END must either be empty, or start with a
+   slash.  */
+
+static bool _GL_ATTRIBUTE_PURE
+suffix_requires_dir_check (char const *end)
+{
+  /* If END does not start with a slash, the suffix is OK.  */
+  while (ISSLASH (*end))
+    {
+      /* Two or more slashes act like a single slash.  */
+      do
+        end++;
+      while (ISSLASH (*end));
+
+      switch (*end++)
+        {
+        default: return false;  /* An ordinary file name component is OK.  */
+        case '\0': return true; /* Trailing "/" is trouble.  */
+        case '.': break;        /* Possibly "." or "..".  */
+        }
+      /* Trailing "/.", or "/.." even if not trailing, is trouble.  */
+      if (!*end || (*end == '.' && (!end[1] || ISSLASH (end[1]))))
+        return true;
+    }
+
+  return false;
+}
+
+/* Append this to a file name to test whether it is a searchable directory.
+   On POSIX platforms "/" suffices, but "/./" is sometimes needed on
+   macOS 10.13 <https://bugs.gnu.org/30350>, and should also work on
+   platforms like AIX 7.2 that need at least "/.".  */
+
+#ifdef LSTAT_FOLLOWS_SLASHED_SYMLINK
+static char const dir_suffix[] = "/";
+#else
+static char const dir_suffix[] = "/./";
+#endif
+
+/* Return true if DIR is a searchable dir, false (setting errno) otherwise.
+   DIREND points to the NUL byte at the end of the DIR string.
+   Store garbage into DIREND[0 .. strlen (dir_suffix)].  */
+
+static bool
+dir_check (char *dir, char *dirend)
+{
+  strcpy (dirend, dir_suffix);
+  return file_accessible (dir);
+}
+
 #if !((HAVE_CANONICALIZE_FILE_NAME && FUNC_REALPATH_WORKS)      \
       || GNULIB_CANONICALIZE_LGPL)
 /* Return the canonical absolute name of file NAME.  A canonical name
@@ -64,6 +133,12 @@ canonicalize_file_name (const char *name)
 }
 #endif /* !HAVE_CANONICALIZE_FILE_NAME */
 
+static bool
+multiple_bits_set (canonicalize_mode_t i)
+{
+  return (i & (i - 1)) != 0;
+}
+
 /* Return true if we've already seen the triple, <FILENAME, dev, ino>.
    If *HT is not initialized, initialize it.  */
 static bool
@@ -71,7 +146,7 @@ seen_triple (Hash_table **ht, char const *filename, struct stat const *st)
 {
   if (*ht == NULL)
     {
-      size_t initial_capacity = 7;
+      idx_t initial_capacity = 7;
       *ht = hash_initialize (initial_capacity,
                             NULL,
                             triple_hash,
@@ -88,30 +163,38 @@ seen_triple (Hash_table **ht, char const *filename, struct stat const *st)
   return false;
 }
 
-/* Return the canonical absolute name of file NAME, while treating
-   missing elements according to CAN_MODE.  A canonical name
-   does not contain any ".", ".." components nor any repeated file name
-   separators ('/') or, depending on other CAN_MODE flags, symlinks.
-   Whether components must exist or not depends on canonicalize mode.
-   The result is malloc'd.  */
 
-char *
-canonicalize_filename_mode (const char *name, canonicalize_mode_t can_mode)
+/* Act like canonicalize_filename_mode (see below), with an additional argument
+   rname_buf that can be used as temporary storage.
+
+   If GCC_LINT is defined, do not inline this function with GCC 10.1
+   and later, to avoid creating a pointer to the stack that GCC
+   -Wreturn-local-addr incorrectly complains about.  See:
+   https://gcc.gnu.org/bugzilla/show_bug.cgi?id=93644
+   Although the noinline attribute can hurt performance a bit, no better way
+   to pacify GCC is known; even an explicit #pragma does not pacify GCC.
+   When the GCC bug is fixed this workaround should be limited to the
+   broken GCC versions.  */
+#if _GL_GNUC_PREREQ (10, 1)
+# if defined GCC_LINT || defined lint
+__attribute__ ((__noinline__))
+# elif __OPTIMIZE__ && !__NO_INLINE__
+#  define GCC_BOGUS_WRETURN_LOCAL_ADDR
+# endif
+#endif
+static char *
+canonicalize_filename_mode_stk (const char *name, canonicalize_mode_t can_mode,
+                                struct scratch_buffer *rname_buf)
 {
-  char *rname, *dest, *extra_buf = NULL;
+  char *dest;
   char const *start;
   char const *end;
-  char const *rname_limit;
-  size_t extra_len = 0;
   Hash_table *ht = NULL;
-  int saved_errno;
-  int can_flags = can_mode & ~CAN_MODE_MASK;
-  bool logical = can_flags & CAN_NOLINKS;
-  size_t prefix_len;
+  bool logical = (can_mode & CAN_NOLINKS) != 0;
+  int num_links = 0;
 
-  can_mode &= CAN_MODE_MASK;
-
-  if (MULTIPLE_BITS_SET (can_mode))
+  canonicalize_mode_t can_exist = can_mode & CAN_MODE_MASK;
+  if (multiple_bits_set (can_exist))
     {
       errno = EINVAL;
       return NULL;
@@ -129,45 +212,76 @@ canonicalize_filename_mode (const char *name, canonicalize_mode_t can_mode)
       return NULL;
     }
 
+  struct scratch_buffer extra_buffer, link_buffer;
+  scratch_buffer_init (&extra_buffer);
+  scratch_buffer_init (&link_buffer);
+  scratch_buffer_init (rname_buf);
+  char *rname_on_stack = rname_buf->data;
+  char *rname = rname_on_stack;
+  bool end_in_extra_buffer = false;
+  bool failed = true;
+
   /* This is always zero for Posix hosts, but can be 2 for MS-Windows
      and MS-DOS X:/foo/bar file names.  */
-  prefix_len = FILE_SYSTEM_PREFIX_LEN (name);
+  idx_t prefix_len = FILE_SYSTEM_PREFIX_LEN (name);
 
   if (!IS_ABSOLUTE_FILE_NAME (name))
     {
-      rname = xgetcwd ();
-      if (!rname)
-        return NULL;
-      dest = strchr (rname, '\0');
-      if (dest - rname < PATH_MAX)
+      while (!getcwd (rname, rname_buf->length))
         {
-          char *p = xrealloc (rname, PATH_MAX);
-          dest = p + (dest - rname);
-          rname = p;
-          rname_limit = rname + PATH_MAX;
-        }
-      else
-        {
-          rname_limit = dest;
+          switch (errno)
+            {
+            case ERANGE:
+              if (scratch_buffer_grow (rname_buf))
+                break;
+              FALLTHROUGH;
+            case ENOMEM:
+              xalloc_die ();
+
+            default:
+              dest = rname;
+              goto error;
+            }
+          rname = rname_buf->data;
         }
+      dest = rawmemchr (rname, '\0');
       start = name;
       prefix_len = FILE_SYSTEM_PREFIX_LEN (rname);
     }
   else
     {
-      rname = xmalloc (PATH_MAX);
-      rname_limit = rname + PATH_MAX;
-      dest = rname;
-      if (prefix_len)
-        {
-          memcpy (rname, name, prefix_len);
-          dest += prefix_len;
-        }
+      dest = mempcpy (rname, name, prefix_len);
       *dest++ = '/';
       if (DOUBLE_SLASH_IS_DISTINCT_ROOT)
         {
-          if (ISSLASH (name[1]) && !ISSLASH (name[2]) && !prefix_len)
-            *dest++ = '/';
+          if (prefix_len == 0 /* implies ISSLASH (name[0]) */
+              && ISSLASH (name[1]) && !ISSLASH (name[2]))
+            {
+              *dest++ = '/';
+#if defined _WIN32 && !defined __CYGWIN__
+              /* For UNC file names '\\server\path\to\file', extend the prefix
+                 to include the server: '\\server\'.  */
+              {
+                idx_t i;
+                for (i = 2; name[i] != '\0' && !ISSLASH (name[i]); )
+                  i++;
+                if (name[i] != '\0' /* implies ISSLASH (name[i]) */
+                    && i + 1 < rname_buf->length)
+                  {
+                    prefix_len = i;
+                    memcpy (dest, name + 2, i - 2 + 1);
+                    dest += i - 2 + 1;
+                  }
+                else
+                  {
+                    /* Either name = '\\server'; this is an invalid file name.
+                       Or name = '\\server\...' and server is more than
+                       rname_buf->length - 4 bytes long.  In either
+                       case, stop the UNC processing.  */
+                  }
+              }
+#endif
+            }
           *dest = '\0';
         }
       start = name + prefix_len;
@@ -183,120 +297,119 @@ canonicalize_filename_mode (const char *name, canonicalize_mode_t can_mode)
       for (end = start; *end && !ISSLASH (*end); ++end)
         /* Nothing.  */;
 
-      if (end - start == 0)
+      /* Length of this file name component; it can be zero if a file
+         name ends in '/'.  */
+      idx_t startlen = end - start;
+
+      if (startlen == 0)
         break;
-      else if (end - start == 1 && start[0] == '.')
+      else if (startlen == 1 && start[0] == '.')
         /* nothing */;
-      else if (end - start == 2 && start[0] == '.' && start[1] == '.')
+      else if (startlen == 2 && start[0] == '.' && start[1] == '.')
         {
           /* Back up to previous component, ignore if at root already.  */
           if (dest > rname + prefix_len + 1)
             for (--dest; dest > rname && !ISSLASH (dest[-1]); --dest)
               continue;
-          if (DOUBLE_SLASH_IS_DISTINCT_ROOT && dest == rname + 1
-              && !prefix_len && ISSLASH (*dest) && !ISSLASH (dest[1]))
+          if (DOUBLE_SLASH_IS_DISTINCT_ROOT
+              && dest == rname + 1 && !prefix_len
+              && ISSLASH (*dest) && !ISSLASH (dest[1]))
             dest++;
         }
       else
         {
-          struct stat st;
-
           if (!ISSLASH (dest[-1]))
             *dest++ = '/';
 
-          if (dest + (end - start) >= rname_limit)
+          while (rname + rname_buf->length - dest
+                 < startlen + sizeof dir_suffix)
             {
-              ptrdiff_t dest_offset = dest - rname;
-              size_t new_size = rname_limit - rname;
-
-              if (end - start + 1 > PATH_MAX)
-                new_size += end - start + 1;
-              else
-                new_size += PATH_MAX;
-              rname = xrealloc (rname, new_size);
-              rname_limit = rname + new_size;
-
+              idx_t dest_offset = dest - rname;
+              if (!scratch_buffer_grow_preserve (rname_buf))
+                xalloc_die ();
+              rname = rname_buf->data;
               dest = rname + dest_offset;
             }
 
-          dest = memcpy (dest, start, end - start);
-          dest += end - start;
+          dest = mempcpy (dest, start, startlen);
           *dest = '\0';
 
-          if (logical && (can_mode == CAN_MISSING))
+          char *buf;
+          ssize_t n = -1;
+          if (!logical)
             {
-              /* Avoid the stat in this case as it's inconsequential.
-                 i.e. we're neither resolving symlinks or testing
-                 component existence.  */
-              st.st_mode = 0;
-            }
-          else if ((logical ? stat (rname, &st) : lstat (rname, &st)) != 0)
-            {
-              /* FIXME: If errno == EOVERFLOW here, the entry exists.  */
-              saved_errno = errno;
-              if (can_mode == CAN_EXISTING)
-                goto error;
-              if (can_mode == CAN_ALL_BUT_LAST)
+              while (true)
                 {
-                  if (end[strspn (end, SLASHES)] || saved_errno != ENOENT)
+                  buf = link_buffer.data;
+                  idx_t bufsize = link_buffer.length;
+                  n = readlink (rname, buf, bufsize - 1);
+                  if (n < bufsize - 1)
+                    break;
+                  if (!scratch_buffer_grow (&link_buffer))
+                    xalloc_die ();
+                }
+            }
+          if (0 <= n)
+            {
+              /* A physical traversal and RNAME is a symbolic link.  */
+
+              if (num_links < 20)
+                num_links++;
+              else if (*start)
+                {
+                  /* Enough symlinks have been seen that it is time to
+                     worry about being in a symlink cycle.
+                     Get the device and inode of the parent directory, as
+                     pre-2017 POSIX says this info is not reliable for
+                     symlinks.  */
+                  struct stat st;
+                  dest[- startlen] = '\0';
+                  if (stat (*rname ? rname : ".", &st) != 0)
                     goto error;
-                  continue;
+                  dest[- startlen] = *start;
+
+                  /* Detect loops.  We cannot use the cycle-check module here,
+                     since it's possible to encounter the same parent
+                     directory more than once in a given traversal.  However,
+                     encountering the same (parentdir, START) pair twice does
+                     indicate a loop.  */
+                  if (seen_triple (&ht, start, &st))
+                    {
+                      if (can_exist == CAN_MISSING)
+                        continue;
+                      errno = ELOOP;
+                      goto error;
+                    }
                 }
-              st.st_mode = 0;
-            }
 
-          if (S_ISLNK (st.st_mode))
-            {
-              char *buf;
-              size_t n, len;
+              buf[n] = '\0';
 
-              /* Detect loops.  We cannot use the cycle-check module here,
-                 since it's actually possible to encounter the same symlink
-                 more than once in a given traversal.  However, encountering
-                 the same symlink,NAME pair twice does indicate a loop.  */
-              if (seen_triple (&ht, name, &st))
+              char *extra_buf = extra_buffer.data;
+              idx_t end_idx IF_LINT (= 0);
+              if (end_in_extra_buffer)
+                end_idx = end - extra_buf;
+              size_t len = strlen (end);
+              if (INT_ADD_OVERFLOW (len, n))
+                xalloc_die ();
+              while (extra_buffer.length <= len + n)
                 {
-                  if (can_mode == CAN_MISSING)
-                    continue;
-                  saved_errno = ELOOP;
-                  goto error;
-                }
-
-              buf = areadlink_with_size (rname, st.st_size);
-              if (!buf)
-                {
-                  if (can_mode == CAN_MISSING && errno != ENOMEM)
-                    continue;
-                  saved_errno = errno;
-                  goto error;
-                }
-
-              n = strlen (buf);
-              len = strlen (end);
-
-              if (!extra_len)
-                {
-                  extra_len =
-                    ((n + len + 1) > PATH_MAX) ? (n + len + 1) : PATH_MAX;
-                  extra_buf = xmalloc (extra_len);
-                }
-              else if ((n + len + 1) > extra_len)
-                {
-                  extra_len = n + len + 1;
-                  extra_buf = xrealloc (extra_buf, extra_len);
+                  if (!scratch_buffer_grow_preserve (&extra_buffer))
+                    xalloc_die ();
+                  extra_buf = extra_buffer.data;
                 }
+              if (end_in_extra_buffer)
+                end = extra_buf + end_idx;
 
               /* Careful here, end may be a pointer into extra_buf... */
               memmove (&extra_buf[n], end, len + 1);
               name = end = memcpy (extra_buf, buf, n);
+              end_in_extra_buffer = true;
 
               if (IS_ABSOLUTE_FILE_NAME (buf))
                 {
-                  size_t pfxlen = FILE_SYSTEM_PREFIX_LEN (buf);
+                  idx_t pfxlen = FILE_SYSTEM_PREFIX_LEN (buf);
 
-                  if (pfxlen)
-                    memcpy (rname, buf, pfxlen);
-                  dest = rname + pfxlen;
+                  dest = mempcpy (rname, buf, pfxlen);
                   *dest++ = '/'; /* It's an absolute symlink */
                   if (DOUBLE_SLASH_IS_DISTINCT_ROOT)
                     {
@@ -318,17 +431,17 @@ canonicalize_filename_mode (const char *name, canonicalize_mode_t can_mode)
                       && ISSLASH (*dest) && !ISSLASH (dest[1]) && !prefix_len)
                     dest++;
                 }
-
-              free (buf);
-            }
-          else
-            {
-              if (!S_ISDIR (st.st_mode) && *end && (can_mode != CAN_MISSING))
-                {
-                  saved_errno = ENOTDIR;
-                  goto error;
-                }
             }
+          else if (! (can_exist == CAN_MISSING
+                      || (suffix_requires_dir_check (end)
+                          ? dir_check (rname, dest)
+                          : !logical
+                          ? errno == EINVAL
+                          : *end || file_accessible (rname))
+                      || (can_exist == CAN_ALL_BUT_LAST
+                          && errno == ENOENT
+                          && !end[strspn (end, SLASHES)])))
+            goto error;
         }
     }
   if (dest > rname + prefix_len + 1 && ISSLASH (dest[-1]))
@@ -336,20 +449,41 @@ canonicalize_filename_mode (const char *name, canonicalize_mode_t can_mode)
   if (DOUBLE_SLASH_IS_DISTINCT_ROOT && dest == rname + 1 && !prefix_len
       && ISSLASH (*dest) && !ISSLASH (dest[1]))
     dest++;
-  *dest = '\0';
-  if (rname_limit != dest + 1)
-    rname = xrealloc (rname, dest - rname + 1);
-
-  free (extra_buf);
-  if (ht)
-    hash_free (ht);
-  return rname;
+  failed = false;
 
 error:
-  free (extra_buf);
-  free (rname);
   if (ht)
     hash_free (ht);
-  errno = saved_errno;
-  return NULL;
+  scratch_buffer_free (&extra_buffer);
+  scratch_buffer_free (&link_buffer);
+
+  if (failed)
+    {
+      scratch_buffer_free (rname_buf);
+      return NULL;
+    }
+
+  *dest++ = '\0';
+  char *result = scratch_buffer_dupfree (rname_buf, dest - rname);
+  if (!result)
+    xalloc_die ();
+  return result;
+}
+
+/* Return the canonical absolute name of file NAME, while treating
+   missing elements according to CAN_MODE.  A canonical name
+   does not contain any ".", ".." components nor any repeated file name
+   separators ('/') or, depending on other CAN_MODE flags, symlinks.
+   Whether components must exist or not depends on canonicalize mode.
+   The result is malloc'd.  */
+
+char *
+canonicalize_filename_mode (const char *name, canonicalize_mode_t can_mode)
+{
+  #ifdef GCC_BOGUS_WRETURN_LOCAL_ADDR
+   #warning "GCC might issue a bogus -Wreturn-local-addr warning here."
+   #warning "See <https://gcc.gnu.org/bugzilla/show_bug.cgi?id=93644>."
+  #endif
+  struct scratch_buffer rname_buffer;
+  return canonicalize_filename_mode_stk (name, can_mode, &rname_buffer);
 }

lib/canonicalize.h

@@ -1,9 +1,9 @@
 /* Return the canonical absolute name of a given file.
-   Copyright (C) 1996-2007, 2009-2020 Free Software Foundation, Inc.
+   Copyright (C) 1996-2007, 2009-2022 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
-   the Free Software Foundation; either version 3 of the License, or
+   the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.
 
    This program is distributed in the hope that it will be useful,
@@ -46,8 +46,10 @@ typedef enum canonicalize_mode_t canonicalize_mode_t;
    does not contain any `.', `..' components nor any repeated file name
    separators ('/') or, depending on other CAN_MODE flags, symlinks.
    Whether components must exist or not depends on canonicalize mode.
-   The result is malloc'd.  */
-char *canonicalize_filename_mode (const char *, canonicalize_mode_t);
+   The result is malloc'd.
+   Upon failure, return NULL with errno set.  */
+char *canonicalize_filename_mode (const char *, canonicalize_mode_t)
+  _GL_ATTRIBUTE_MALLOC _GL_ATTRIBUTE_DEALLOC_FREE;
 
 #ifdef __cplusplus
 }

lib/careadlinkat.c

@@ -1,19 +1,19 @@
 /* Read symbolic links into a buffer without size limitation, relative to fd.
 
-   Copyright (C) 2001, 2003-2004, 2007, 2009-2020 Free Software Foundation,
+   Copyright (C) 2001, 2003-2004, 2007, 2009-2022 Free Software Foundation,
    Inc.
 
-   This program is free software: you can redistribute it and/or modify
-   it under the terms of the GNU General Public License as published by
-   the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
 
-   This program is distributed in the hope that it will be useful,
+   This file is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-   GNU General Public License for more details.
+   GNU Lesser General Public License for more details.
 
-   You should have received a copy of the GNU General Public License
+   You should have received a copy of the GNU Lesser General Public License
    along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
 
 /* Written by Paul Eggert, Bruno Haible, and Jim Meyering.  */
@@ -22,6 +22,9 @@
 
 #include "careadlinkat.h"
 
+#include "idx.h"
+#include "minmax.h"
+
 #include <errno.h>
 #include <limits.h>
 #include <string.h>
@@ -38,6 +41,107 @@
 
 #include "allocator.h"
 
+enum { STACK_BUF_SIZE = 1024 };
+
+/* Act like careadlinkat (see below), with an additional argument
+   STACK_BUF that can be used as temporary storage.
+
+   If GCC_LINT is defined, do not inline this function with GCC 10.1
+   and later, to avoid creating a pointer to the stack that GCC
+   -Wreturn-local-addr incorrectly complains about.  See:
+   https://gcc.gnu.org/bugzilla/show_bug.cgi?id=93644
+   Although the noinline attribute can hurt performance a bit, no better way
+   to pacify GCC is known; even an explicit #pragma does not pacify GCC.
+   When the GCC bug is fixed this workaround should be limited to the
+   broken GCC versions.  */
+#if _GL_GNUC_PREREQ (10, 1)
+# if defined GCC_LINT || defined lint
+__attribute__ ((__noinline__))
+# elif __OPTIMIZE__ && !__NO_INLINE__
+#  define GCC_BOGUS_WRETURN_LOCAL_ADDR
+# endif
+#endif
+static char *
+readlink_stk (int fd, char const *filename,
+              char *buffer, size_t buffer_size,
+              struct allocator const *alloc,
+              ssize_t (*preadlinkat) (int, char const *, char *, size_t),
+              char stack_buf[STACK_BUF_SIZE])
+{
+  if (! alloc)
+    alloc = &stdlib_allocator;
+
+  if (!buffer)
+    {
+      buffer = stack_buf;
+      buffer_size = STACK_BUF_SIZE;
+    }
+
+  char *buf = buffer;
+  idx_t buf_size_max = MIN (IDX_MAX, MIN (SSIZE_MAX, SIZE_MAX));
+  idx_t buf_size = MIN (buffer_size, buf_size_max);
+
+  while (buf)
+    {
+      /* Attempt to read the link into the current buffer.  */
+      idx_t link_length = preadlinkat (fd, filename, buf, buf_size);
+      if (link_length < 0)
+        {
+          if (buf != buffer)
+            {
+              int readlinkat_errno = errno;
+              alloc->free (buf);
+              errno = readlinkat_errno;
+            }
+          return NULL;
+        }
+
+      idx_t link_size = link_length;
+
+      if (link_size < buf_size)
+        {
+          buf[link_size++] = '\0';
+
+          if (buf == stack_buf)
+            {
+              char *b = alloc->allocate (link_size);
+              buf_size = link_size;
+              if (! b)
+                break;
+              return memcpy (b, buf, link_size);
+            }
+
+          if (link_size < buf_size && buf != buffer && alloc->reallocate)
+            {
+              /* Shrink BUF before returning it.  */
+              char *b = alloc->reallocate (buf, link_size);
+              if (b)
+                return b;
+            }
+
+          return buf;
+        }
+
+      if (buf != buffer)
+        alloc->free (buf);
+
+      if (buf_size_max / 2 <= buf_size)
+        {
+          errno = ENAMETOOLONG;
+          return NULL;
+        }
+
+      buf_size = 2 * buf_size + 1;
+      buf = alloc->allocate (buf_size);
+    }
+
+  if (alloc->die)
+    alloc->die (buf_size);
+  errno = ENOMEM;
+  return NULL;
+}
+
+
 /* Assuming the current directory is FD, get the symbolic link value
    of FILENAME as a null-terminated string and put it into a buffer.
    If FD is AT_FDCWD, FILENAME is interpreted relative to the current
@@ -66,95 +170,15 @@ careadlinkat (int fd, char const *filename,
               struct allocator const *alloc,
               ssize_t (*preadlinkat) (int, char const *, char *, size_t))
 {
-  char *buf;
-  size_t buf_size;
-  size_t buf_size_max =
-    SSIZE_MAX < SIZE_MAX ? (size_t) SSIZE_MAX + 1 : SIZE_MAX;
-  char stack_buf[1024];
-
-  if (! alloc)
-    alloc = &stdlib_allocator;
-
-  if (! buffer_size)
-    {
-      /* Allocate the initial buffer on the stack.  This way, in the
-         common case of a symlink of small size, we get away with a
-         single small malloc() instead of a big malloc() followed by a
-         shrinking realloc().  */
-      buffer = stack_buf;
-      buffer_size = sizeof stack_buf;
-    }
-
-  buf = buffer;
-  buf_size = buffer_size;
-
-  do
-    {
-      /* Attempt to read the link into the current buffer.  */
-      ssize_t link_length = preadlinkat (fd, filename, buf, buf_size);
-      size_t link_size;
-      if (link_length < 0)
-        {
-          /* On AIX 5L v5.3 and HP-UX 11i v2 04/09, readlink returns -1
-             with errno == ERANGE if the buffer is too small.  */
-          int readlinkat_errno = errno;
-          if (readlinkat_errno != ERANGE)
-            {
-              if (buf != buffer)
-                {
-                  alloc->free (buf);
-                  errno = readlinkat_errno;
-                }
-              return NULL;
-            }
-        }
-
-      link_size = link_length;
-
-      if (link_size < buf_size)
-        {
-          buf[link_size++] = '\0';
-
-          if (buf == stack_buf)
-            {
-              char *b = (char *) alloc->allocate (link_size);
-              buf_size = link_size;
-              if (! b)
-                break;
-              memcpy (b, buf, link_size);
-              buf = b;
-            }
-          else if (link_size < buf_size && buf != buffer && alloc->reallocate)
-            {
-              /* Shrink BUF before returning it.  */
-              char *b = (char *) alloc->reallocate (buf, link_size);
-              if (b)
-                buf = b;
-            }
-
-          return buf;
-        }
-
-      if (buf != buffer)
-        alloc->free (buf);
-
-      if (buf_size <= buf_size_max / 2)
-        buf_size *= 2;
-      else if (buf_size < buf_size_max)
-        buf_size = buf_size_max;
-      else if (buf_size_max < SIZE_MAX)
-        {
-          errno = ENAMETOOLONG;
-          return NULL;
-        }
-      else
-        break;
-      buf = (char *) alloc->allocate (buf_size);
-    }
-  while (buf);
-
-  if (alloc->die)
-    alloc->die (buf_size);
-  errno = ENOMEM;
-  return NULL;
+  /* Allocate the initial buffer on the stack.  This way, in the
+     common case of a symlink of small size, we get away with a
+     single small malloc instead of a big malloc followed by a
+     shrinking realloc.  */
+  #ifdef GCC_BOGUS_WRETURN_LOCAL_ADDR
+   #warning "GCC might issue a bogus -Wreturn-local-addr warning here."
+   #warning "See <https://gcc.gnu.org/bugzilla/show_bug.cgi?id=93644>."
+  #endif
+  char stack_buf[STACK_BUF_SIZE];
+  return readlink_stk (fd, filename, buffer, buffer_size, alloc,
+                       preadlinkat, stack_buf);
 }

lib/careadlinkat.h

@@ -1,18 +1,18 @@
 /* Read symbolic links into a buffer without size limitation, relative to fd.
 
-   Copyright (C) 2011-2020 Free Software Foundation, Inc.
+   Copyright (C) 2011-2022 Free Software Foundation, Inc.
 
-   This program is free software: you can redistribute it and/or modify
-   it under the terms of the GNU General Public License as published by
-   the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
 
-   This program is distributed in the hope that it will be useful,
+   This file is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-   GNU General Public License for more details.
+   GNU Lesser General Public License for more details.
 
-   You should have received a copy of the GNU General Public License
+   You should have received a copy of the GNU Lesser General Public License
    along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
 
 /* Written by Paul Eggert, Bruno Haible, and Jim Meyering.  */

lib/cdefs.h

@@ -1,17 +1,18 @@
-/* Copyright (C) 1992-2020 Free Software Foundation, Inc.
+/* Copyright (C) 1992-2022 Free Software Foundation, Inc.
+   Copyright The GNU Toolchain Authors.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
-   modify it under the terms of the GNU General Public
+   modify it under the terms of the GNU Lesser General Public
    License as published by the Free Software Foundation; either
-   version 3 of the License, or (at your option) any later version.
+   version 2.1 of the License, or (at your option) any later version.
 
    The GNU C Library is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-   General Public License for more details.
+   Lesser General Public License for more details.
 
-   You should have received a copy of the GNU General Public
+   You should have received a copy of the GNU Lesser General Public
    License along with the GNU C Library; if not, see
    <https://www.gnu.org/licenses/>.  */
 
@@ -25,7 +26,7 @@
 
 /* The GNU libc does not support any K&R compilers or the traditional mode
    of ISO C compilers anymore.  Check for some of the combinations not
-   anymore supported.  */
+   supported anymore.  */
 #if defined __GNUC__ && !defined __STDC__
 # error "You need a ISO C conforming compiler to use the glibc headers"
 #endif
@@ -34,7 +35,31 @@
 #undef	__P
 #undef	__PMT
 
-#ifdef __GNUC__
+/* Compilers that lack __has_attribute may object to
+       #if defined __has_attribute && __has_attribute (...)
+   even though they do not need to evaluate the right-hand side of the &&.
+   Similarly for __has_builtin, etc.  */
+#if (defined __has_attribute \
+     && (!defined __clang_minor__ \
+         || (defined __apple_build_version__ \
+             ? 6000000 <= __apple_build_version__ \
+             : 3 < __clang_major__ + (5 <= __clang_minor__))))
+# define __glibc_has_attribute(attr) __has_attribute (attr)
+#else
+# define __glibc_has_attribute(attr) 0
+#endif
+#ifdef __has_builtin
+# define __glibc_has_builtin(name) __has_builtin (name)
+#else
+# define __glibc_has_builtin(name) 0
+#endif
+#ifdef __has_extension
+# define __glibc_has_extension(ext) __has_extension (ext)
+#else
+# define __glibc_has_extension(ext) 0
+#endif
+
+#if defined __GNUC__ || defined __clang__
 
 /* All functions, except those with callbacks or those that
    synchronize memory, are leaf functions.  */
@@ -47,21 +72,26 @@
 # endif
 
 /* GCC can always grok prototypes.  For C++ programs we add throw()
-   to help it optimize the function calls.  But this works only with
-   gcc 2.8.x and egcs.  For gcc 3.2 and up we even mark C functions
+   to help it optimize the function calls.  But this only works with
+   gcc 2.8.x and egcs.  For gcc 3.4 and up we even mark C functions
    as non-throwing using a function attribute since programs can use
    the -fexceptions options for C code as well.  */
-# if !defined __cplusplus && __GNUC_PREREQ (3, 3)
+# if !defined __cplusplus \
+     && (__GNUC_PREREQ (3, 4) || __glibc_has_attribute (__nothrow__))
 #  define __THROW	__attribute__ ((__nothrow__ __LEAF))
 #  define __THROWNL	__attribute__ ((__nothrow__))
 #  define __NTH(fct)	__attribute__ ((__nothrow__ __LEAF)) fct
 #  define __NTHNL(fct)  __attribute__ ((__nothrow__)) fct
 # else
-#  if defined __cplusplus && __GNUC_PREREQ (2,8)
-#   define __THROW	throw ()
-#   define __THROWNL	throw ()
-#   define __NTH(fct)	__LEAF_ATTR fct throw ()
-#   define __NTHNL(fct) fct throw ()
+#  if defined __cplusplus && (__GNUC_PREREQ (2,8) || __clang_major >= 4)
+#   if __cplusplus >= 201103L
+#    define __THROW	noexcept (true)
+#   else
+#    define __THROW	throw ()
+#   endif
+#   define __THROWNL	__THROW
+#   define __NTH(fct)	__LEAF_ATTR fct __THROW
+#   define __NTHNL(fct) fct __THROW
 #  else
 #   define __THROW
 #   define __THROWNL
@@ -70,7 +100,7 @@
 #  endif
 # endif
 
-#else	/* Not GCC.  */
+#else	/* Not GCC or clang.  */
 
 # if (defined __cplusplus						\
       || (defined __STDC_VERSION__ && __STDC_VERSION__ >= 199901L))
@@ -83,16 +113,7 @@
 # define __THROWNL
 # define __NTH(fct)	fct
 
-#endif	/* GCC.  */
-
-/* Compilers that are not clang may object to
-       #if defined __clang__ && __has_extension(...)
-   even though they do not need to evaluate the right-hand side of the &&.  */
-#if defined __clang__ && defined __has_extension
-# define __glibc_clang_has_extension(ext) __has_extension (ext)
-#else
-# define __glibc_clang_has_extension(ext) 0
-#endif
+#endif	/* GCC || clang.  */
 
 /* These two macros are not used in glibc anymore.  They are kept here
    only because some other projects expect the macros to be defined.  */
@@ -123,14 +144,68 @@
 #define __bos(ptr) __builtin_object_size (ptr, __USE_FORTIFY_LEVEL > 1)
 #define __bos0(ptr) __builtin_object_size (ptr, 0)
 
+/* Use __builtin_dynamic_object_size at _FORTIFY_SOURCE=3 when available.  */
+#if __USE_FORTIFY_LEVEL == 3 && (__glibc_clang_prereq (9, 0)		      \
+				 || __GNUC_PREREQ (12, 0))
+# define __glibc_objsize0(__o) __builtin_dynamic_object_size (__o, 0)
+# define __glibc_objsize(__o) __builtin_dynamic_object_size (__o, 1)
+#else
+# define __glibc_objsize0(__o) __bos0 (__o)
+# define __glibc_objsize(__o) __bos (__o)
+#endif
+
+/* Compile time conditions to choose between the regular, _chk and _chk_warn
+   variants.  These conditions should get evaluated to constant and optimized
+   away.  */
+
+#define __glibc_safe_len_cond(__l, __s, __osz) ((__l) <= (__osz) / (__s))
+#define __glibc_unsigned_or_positive(__l) \
+  ((__typeof (__l)) 0 < (__typeof (__l)) -1				      \
+   || (__builtin_constant_p (__l) && (__l) > 0))
+
+/* Length is known to be safe at compile time if the __L * __S <= __OBJSZ
+   condition can be folded to a constant and if it is true.  The -1 check is
+   redundant because since it implies that __glibc_safe_len_cond is true.  */
+#define __glibc_safe_or_unknown_len(__l, __s, __osz) \
+  (__glibc_unsigned_or_positive (__l)					      \
+   && __builtin_constant_p (__glibc_safe_len_cond ((__SIZE_TYPE__) (__l),     \
+						   __s, __osz))		      \
+   && __glibc_safe_len_cond ((__SIZE_TYPE__) (__l), __s, __osz))
+
+/* Conversely, we know at compile time that the length is unsafe if the
+   __L * __S <= __OBJSZ condition can be folded to a constant and if it is
+   false.  */
+#define __glibc_unsafe_len(__l, __s, __osz) \
+  (__glibc_unsigned_or_positive (__l)					      \
+   && __builtin_constant_p (__glibc_safe_len_cond ((__SIZE_TYPE__) (__l),     \
+						   __s, __osz))		      \
+   && !__glibc_safe_len_cond ((__SIZE_TYPE__) (__l), __s, __osz))
+
+/* Fortify function f.  __f_alias, __f_chk and __f_chk_warn must be
+   declared.  */
+
+#define __glibc_fortify(f, __l, __s, __osz, ...) \
+  (__glibc_safe_or_unknown_len (__l, __s, __osz)			      \
+   ? __ ## f ## _alias (__VA_ARGS__)					      \
+   : (__glibc_unsafe_len (__l, __s, __osz)				      \
+      ? __ ## f ## _chk_warn (__VA_ARGS__, __osz)			      \
+      : __ ## f ## _chk (__VA_ARGS__, __osz)))			      \
+
+/* Fortify function f, where object size argument passed to f is the number of
+   elements and not total size.  */
+
+#define __glibc_fortify_n(f, __l, __s, __osz, ...) \
+  (__glibc_safe_or_unknown_len (__l, __s, __osz)			      \
+   ? __ ## f ## _alias (__VA_ARGS__)					      \
+   : (__glibc_unsafe_len (__l, __s, __osz)				      \
+      ? __ ## f ## _chk_warn (__VA_ARGS__, (__osz) / (__s))		      \
+      : __ ## f ## _chk (__VA_ARGS__, (__osz) / (__s))))		      \
+
 #if __GNUC_PREREQ (4,3)
-# define __warndecl(name, msg) \
-  extern void name (void) __attribute__((__warning__ (msg)))
 # define __warnattr(msg) __attribute__((__warning__ (msg)))
 # define __errordecl(name, msg) \
   extern void name (void) __attribute__((__error__ (msg)))
 #else
-# define __warndecl(name, msg) extern void name (void)
 # define __warnattr(msg)
 # define __errordecl(name, msg) extern void name (void)
 #endif
@@ -142,8 +217,8 @@
 #if defined __STDC_VERSION__ && __STDC_VERSION__ >= 199901L && !defined __HP_cc
 # define __flexarr	[]
 # define __glibc_c99_flexarr_available 1
-#elif __GNUC_PREREQ (2,97)
-/* GCC 2.97 supports C99 flexible array members as an extension,
+#elif __GNUC_PREREQ (2,97) || defined __clang__
+/* GCC 2.97 and clang support C99 flexible array members as an extension,
    even when in C89 mode or compiling C++ (any version).  */
 # define __flexarr	[]
 # define __glibc_c99_flexarr_available 1
@@ -169,7 +244,7 @@
    Example:
    int __REDIRECT(setpgrp, (__pid_t pid, __pid_t pgrp), setpgid); */
 
-#if defined __GNUC__ && __GNUC__ >= 2
+#if (defined __GNUC__ && __GNUC__ >= 2) || (__clang_major__ >= 4)
 
 # define __REDIRECT(name, proto, alias) name proto __asm__ (__ASMNAME (#alias))
 # ifdef __cplusplus
@@ -194,17 +269,17 @@
 */
 #endif
 
-/* GCC has various useful declarations that can be made with the
-   `__attribute__' syntax.  All of the ways we use this do fine if
-   they are omitted for compilers that don't understand it. */
-#if !defined __GNUC__ || __GNUC__ < 2
+/* GCC and clang have various useful declarations that can be made with
+   the '__attribute__' syntax.  All of the ways we use this do fine if
+   they are omitted for compilers that don't understand it.  */
+#if !(defined __GNUC__ || defined __clang__)
 # define __attribute__(xyz)	/* Ignore */
 #endif
 
 /* At some point during the gcc 2.96 development the `malloc' attribute
    for functions was introduced.  We don't want to use it unconditionally
    (although this would be possible) since it generates warnings.  */
-#if __GNUC_PREREQ (2,96)
+#if __GNUC_PREREQ (2,96) || __glibc_has_attribute (__malloc__)
 # define __attribute_malloc__ __attribute__ ((__malloc__))
 #else
 # define __attribute_malloc__ /* Ignore */
@@ -219,26 +294,41 @@
 # define __attribute_alloc_size__(params) /* Ignore.  */
 #endif
 
+/* Tell the compiler which argument to an allocation function
+   indicates the alignment of the allocation.  */
+#if __GNUC_PREREQ (4, 9) || __glibc_has_attribute (__alloc_align__)
+# define __attribute_alloc_align__(param) \
+  __attribute__ ((__alloc_align__ param))
+#else
+# define __attribute_alloc_align__(param) /* Ignore.  */
+#endif
+
 /* At some point during the gcc 2.96 development the `pure' attribute
    for functions was introduced.  We don't want to use it unconditionally
    (although this would be possible) since it generates warnings.  */
-#if __GNUC_PREREQ (2,96)
+#if __GNUC_PREREQ (2,96) || __glibc_has_attribute (__pure__)
 # define __attribute_pure__ __attribute__ ((__pure__))
 #else
 # define __attribute_pure__ /* Ignore */
 #endif
 
 /* This declaration tells the compiler that the value is constant.  */
-#if __GNUC_PREREQ (2,5)
+#if __GNUC_PREREQ (2,5) || __glibc_has_attribute (__const__)
 # define __attribute_const__ __attribute__ ((__const__))
 #else
 # define __attribute_const__ /* Ignore */
 #endif
 
+#if __GNUC_PREREQ (2,7) || __glibc_has_attribute (__unused__)
+# define __attribute_maybe_unused__ __attribute__ ((__unused__))
+#else
+# define __attribute_maybe_unused__ /* Ignore */
+#endif
+
 /* At some point during the gcc 3.1 development the `used' attribute
    for functions was introduced.  We don't want to use it unconditionally
    (although this would be possible) since it generates warnings.  */
-#if __GNUC_PREREQ (3,1)
+#if __GNUC_PREREQ (3,1) || __glibc_has_attribute (__used__)
 # define __attribute_used__ __attribute__ ((__used__))
 # define __attribute_noinline__ __attribute__ ((__noinline__))
 #else
@@ -247,7 +337,7 @@
 #endif
 
 /* Since version 3.2, gcc allows marking deprecated functions.  */
-#if __GNUC_PREREQ (3,2)
+#if __GNUC_PREREQ (3,2) || __glibc_has_attribute (__deprecated__)
 # define __attribute_deprecated__ __attribute__ ((__deprecated__))
 #else
 # define __attribute_deprecated__ /* Ignore */
@@ -256,8 +346,8 @@
 /* Since version 4.5, gcc also allows one to specify the message printed
    when a deprecated function is used.  clang claims to be gcc 4.2, but
    may also support this feature.  */
-#if __GNUC_PREREQ (4,5) || \
-    __glibc_clang_has_extension (__attribute_deprecated_with_message__)
+#if __GNUC_PREREQ (4,5) \
+    || __glibc_has_extension (__attribute_deprecated_with_message__)
 # define __attribute_deprecated_msg__(msg) \
 	 __attribute__ ((__deprecated__ (msg)))
 #else
@@ -270,7 +360,7 @@
    If several `format_arg' attributes are given for the same function, in
    gcc-3.0 and older, all but the last one are ignored.  In newer gccs,
    all designated arguments are considered.  */
-#if __GNUC_PREREQ (2,8)
+#if __GNUC_PREREQ (2,8) || __glibc_has_attribute (__format_arg__)
 # define __attribute_format_arg__(x) __attribute__ ((__format_arg__ (x)))
 #else
 # define __attribute_format_arg__(x) /* Ignore */
@@ -280,7 +370,7 @@
    attribute for functions was introduced.  We don't want to use it
    unconditionally (although this would be possible) since it
    generates warnings.  */
-#if __GNUC_PREREQ (2,97)
+#if __GNUC_PREREQ (2,97) || __glibc_has_attribute (__format__)
 # define __attribute_format_strfmon__(a,b) \
   __attribute__ ((__format__ (__strfmon__, a, b)))
 #else
@@ -288,19 +378,33 @@
 #endif
 
 /* The nonnull function attribute marks pointer parameters that
-   must not be NULL.  Do not define __nonnull if it is already defined,
-   for portability when this file is used in Gnulib.  */
-#ifndef __nonnull
-# if __GNUC_PREREQ (3,3)
-#  define __nonnull(params) __attribute__ ((__nonnull__ params))
+   must not be NULL.  This has the name __nonnull in glibc,
+   and __attribute_nonnull__ in files shared with Gnulib to avoid
+   collision with a different __nonnull in DragonFlyBSD 5.9.  */
+#ifndef __attribute_nonnull__
+# if __GNUC_PREREQ (3,3) || __glibc_has_attribute (__nonnull__)
+#  define __attribute_nonnull__(params) __attribute__ ((__nonnull__ params))
 # else
-#  define __nonnull(params)
+#  define __attribute_nonnull__(params)
+# endif
+#endif
+#ifndef __nonnull
+# define __nonnull(params) __attribute_nonnull__ (params)
+#endif
+
+/* The returns_nonnull function attribute marks the return type of the function
+   as always being non-null.  */
+#ifndef __returns_nonnull
+# if __GNUC_PREREQ (4, 9) || __glibc_has_attribute (__returns_nonnull__)
+# define __returns_nonnull __attribute__ ((__returns_nonnull__))
+# else
+# define __returns_nonnull
 # endif
 #endif
 
 /* If fortification mode, we warn about unused results of certain
    function calls which can lead to problems.  */
-#if __GNUC_PREREQ (3,4)
+#if __GNUC_PREREQ (3,4) || __glibc_has_attribute (__warn_unused_result__)
 # define __attribute_warn_unused_result__ \
    __attribute__ ((__warn_unused_result__))
 # if defined __USE_FORTIFY_LEVEL && __USE_FORTIFY_LEVEL > 0
@@ -314,7 +418,7 @@
 #endif
 
 /* Forces a function to be always inlined.  */
-#if __GNUC_PREREQ (3,2)
+#if __GNUC_PREREQ (3,2) || __glibc_has_attribute (__always_inline__)
 /* The Linux kernel defines __always_inline in stddef.h (283d7573), and
    it conflicts with this definition.  Therefore undefine it first to
    allow either header to be included first.  */
@@ -327,7 +431,7 @@
 
 /* Associate error messages with the source location of the call site rather
    than with the source location inside the function.  */
-#if __GNUC_PREREQ (4,3)
+#if __GNUC_PREREQ (4,3) || __glibc_has_attribute (__artificial__)
 # define __attribute_artificial__ __attribute__ ((__artificial__))
 #else
 # define __attribute_artificial__ /* Ignore */
@@ -370,12 +474,14 @@
    run in pedantic mode if the uses are carefully marked using the
    `__extension__' keyword.  But this is not generally available before
    version 2.8.  */
-#if !__GNUC_PREREQ (2,8)
+#if !(__GNUC_PREREQ (2,8) || defined __clang__)
 # define __extension__		/* Ignore */
 #endif
 
-/* __restrict is known in EGCS 1.2 and above. */
-#if !__GNUC_PREREQ (2,92)
+/* __restrict is known in EGCS 1.2 and above, and in clang.
+   It works also in C++ mode (outside of arrays), but only when spelled
+   as '__restrict', not 'restrict'.  */
+#if !(__GNUC_PREREQ (2,92) || __clang_major__ >= 3)
 # if defined __STDC_VERSION__ && __STDC_VERSION__ >= 199901L
 #  define __restrict	restrict
 # else
@@ -385,8 +491,9 @@
 
 /* ISO C99 also allows to declare arrays as non-overlapping.  The syntax is
      array_name[restrict]
-   GCC 3.1 supports this.  */
-#if __GNUC_PREREQ (3,1) && !defined __GNUG__
+   GCC 3.1 and clang support this.
+   This syntax is not usable in C++ mode.  */
+#if (__GNUC_PREREQ (3,1) || __clang_major__ >= 3) && !defined __cplusplus
 # define __restrict_arr	__restrict
 #else
 # ifdef __GNUC__
@@ -401,7 +508,7 @@
 # endif
 #endif
 
-#if __GNUC__ >= 3
+#if (__GNUC__ >= 3) || __glibc_has_builtin (__builtin_expect)
 # define __glibc_unlikely(cond)	__builtin_expect ((cond), 0)
 # define __glibc_likely(cond)	__builtin_expect ((cond), 1)
 #else
@@ -409,15 +516,10 @@
 # define __glibc_likely(cond)	(cond)
 #endif
 
-#ifdef __has_attribute
-# define __glibc_has_attribute(attr)	__has_attribute (attr)
-#else
-# define __glibc_has_attribute(attr)	0
-#endif
-
 #if (!defined _Noreturn \
      && (defined __STDC_VERSION__ ? __STDC_VERSION__ : 0) < 201112 \
-     &&  !__GNUC_PREREQ (4,7))
+     &&  !(__GNUC_PREREQ (4,7) \
+           || (3 < __clang_major__ + (5 <= __clang_minor__))))
 # if __GNUC_PREREQ (2,8)
 #  define _Noreturn __attribute__ ((__noreturn__))
 # else
@@ -434,22 +536,63 @@
 # define __attribute_nonstring__
 #endif
 
+/* Undefine (also defined in libc-symbols.h).  */
+#undef __attribute_copy__
+#if __GNUC_PREREQ (9, 0)
+/* Copies attributes from the declaration or type referenced by
+   the argument.  */
+# define __attribute_copy__(arg) __attribute__ ((__copy__ (arg)))
+#else
+# define __attribute_copy__(arg)
+#endif
+
 #if (!defined _Static_assert && !defined __cplusplus \
      && (defined __STDC_VERSION__ ? __STDC_VERSION__ : 0) < 201112 \
-     && (!__GNUC_PREREQ (4, 6) || defined __STRICT_ANSI__))
+     && (!(__GNUC_PREREQ (4, 6) || __clang_major__ >= 4) \
+         || defined __STRICT_ANSI__))
 # define _Static_assert(expr, diagnostic) \
     extern int (*__Static_assert_function (void)) \
       [!!sizeof (struct { int __error_if_negative: (expr) ? 2 : -1; })]
 #endif
 
-/* The #ifndef lets Gnulib avoid including these on non-glibc
-   platforms, where the includes typically do not exist.  */
-#ifndef __WORDSIZE
+/* Gnulib avoids including these, as they don't work on non-glibc or
+   older glibc platforms.  */
+#ifndef __GNULIB_CDEFS
 # include <bits/wordsize.h>
 # include <bits/long-double.h>
 #endif
 
-#if defined __LONG_DOUBLE_MATH_OPTIONAL && defined __NO_LONG_DOUBLE_MATH
+#if __LDOUBLE_REDIRECTS_TO_FLOAT128_ABI == 1
+# ifdef __REDIRECT
+
+/* Alias name defined automatically.  */
+#  define __LDBL_REDIR(name, proto) ... unused__ldbl_redir
+#  define __LDBL_REDIR_DECL(name) \
+  extern __typeof (name) name __asm (__ASMNAME ("__" #name "ieee128"));
+
+/* Alias name defined automatically, with leading underscores.  */
+#  define __LDBL_REDIR2_DECL(name) \
+  extern __typeof (__##name) __##name \
+    __asm (__ASMNAME ("__" #name "ieee128"));
+
+/* Alias name defined manually.  */
+#  define __LDBL_REDIR1(name, proto, alias) ... unused__ldbl_redir1
+#  define __LDBL_REDIR1_DECL(name, alias) \
+  extern __typeof (name) name __asm (__ASMNAME (#alias));
+
+#  define __LDBL_REDIR1_NTH(name, proto, alias) \
+  __REDIRECT_NTH (name, proto, alias)
+#  define __REDIRECT_NTH_LDBL(name, proto, alias) \
+  __LDBL_REDIR1_NTH (name, proto, __##alias##ieee128)
+
+/* Unused.  */
+#  define __REDIRECT_LDBL(name, proto, alias) ... unused__redirect_ldbl
+#  define __LDBL_REDIR_NTH(name, proto) ... unused__ldbl_redir_nth
+
+# else
+_Static_assert (0, "IEEE 128-bits long double requires redirection on this platform");
+# endif
+#elif defined __LONG_DOUBLE_MATH_OPTIONAL && defined __NO_LONG_DOUBLE_MATH
 # define __LDBL_COMPAT 1
 # ifdef __REDIRECT
 #  define __LDBL_REDIR1(name, proto, alias) __REDIRECT (name, proto, alias)
@@ -458,6 +601,8 @@
 #  define __LDBL_REDIR1_NTH(name, proto, alias) __REDIRECT_NTH (name, proto, alias)
 #  define __LDBL_REDIR_NTH(name, proto) \
   __LDBL_REDIR1_NTH (name, proto, __nldbl_##name)
+#  define __LDBL_REDIR2_DECL(name) \
+  extern __typeof (__##name) __##name __asm (__ASMNAME ("__nldbl___" #name));
 #  define __LDBL_REDIR1_DECL(name, alias) \
   extern __typeof (name) name __asm (__ASMNAME (#alias));
 #  define __LDBL_REDIR_DECL(name) \
@@ -468,11 +613,13 @@
   __LDBL_REDIR1_NTH (name, proto, __nldbl_##alias)
 # endif
 #endif
-#if !defined __LDBL_COMPAT || !defined __REDIRECT
+#if (!defined __LDBL_COMPAT && __LDOUBLE_REDIRECTS_TO_FLOAT128_ABI == 0) \
+    || !defined __REDIRECT
 # define __LDBL_REDIR1(name, proto, alias) name proto
 # define __LDBL_REDIR(name, proto) name proto
 # define __LDBL_REDIR1_NTH(name, proto, alias) name proto __THROW
 # define __LDBL_REDIR_NTH(name, proto) name proto __THROW
+# define __LDBL_REDIR2_DECL(name)
 # define __LDBL_REDIR_DECL(name)
 # ifdef __REDIRECT
 #  define __REDIRECT_LDBL(name, proto, alias) __REDIRECT (name, proto, alias)
@@ -503,7 +650,7 @@
    check is required to enable the use of generic selection.  */
 #if !defined __cplusplus \
     && (__GNUC_PREREQ (4, 9) \
-	|| __glibc_clang_has_extension (c_generic_selections) \
+	|| __glibc_has_extension (c_generic_selections) \
 	|| (!defined __GNUC__ && defined __STDC_VERSION__ \
 	    && __STDC_VERSION__ >= 201112L))
 # define __HAVE_GENERIC_SELECTION 1
@@ -511,4 +658,50 @@
 # define __HAVE_GENERIC_SELECTION 0
 #endif
 
+#if __GNUC_PREREQ (10, 0)
+/* Designates a 1-based positional argument ref-index of pointer type
+   that can be used to access size-index elements of the pointed-to
+   array according to access mode, or at least one element when
+   size-index is not provided:
+     access (access-mode, <ref-index> [, <size-index>])  */
+#  define __attr_access(x) __attribute__ ((__access__ x))
+/* For _FORTIFY_SOURCE == 3 we use __builtin_dynamic_object_size, which may
+   use the access attribute to get object sizes from function definition
+   arguments, so we can't use them on functions we fortify.  Drop the object
+   size hints for such functions.  */
+#  if __USE_FORTIFY_LEVEL == 3
+#    define __fortified_attr_access(a, o, s) __attribute__ ((__access__ (a, o)))
+#  else
+#    define __fortified_attr_access(a, o, s) __attr_access ((a, o, s))
+#  endif
+#  if __GNUC_PREREQ (11, 0)
+#    define __attr_access_none(argno) __attribute__ ((__access__ (__none__, argno)))
+#  else
+#    define __attr_access_none(argno)
+#  endif
+#else
+#  define __fortified_attr_access(a, o, s)
+#  define __attr_access(x)
+#  define __attr_access_none(argno)
+#endif
+
+#if __GNUC_PREREQ (11, 0)
+/* Designates dealloc as a function to call to deallocate objects
+   allocated by the declared function.  */
+# define __attr_dealloc(dealloc, argno) \
+    __attribute__ ((__malloc__ (dealloc, argno)))
+# define __attr_dealloc_free __attr_dealloc (__builtin_free, 1)
+#else
+# define __attr_dealloc(dealloc, argno)
+# define __attr_dealloc_free
+#endif
+
+/* Specify that a function such as setjmp or vfork may return
+   twice.  */
+#if __GNUC_PREREQ (4, 1)
+# define __attribute_returns_twice__ __attribute__ ((__returns_twice__))
+#else
+# define __attribute_returns_twice__ /* Ignore.  */
+#endif
+
 #endif	 /* sys/cdefs.h */

lib/chdir-long.c

@@ -1,9 +1,9 @@
 /* provide a chdir function that tries not to fail due to ENAMETOOLONG
-   Copyright (C) 2004-2020 Free Software Foundation, Inc.
+   Copyright (C) 2004-2022 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
-   the Free Software Foundation; either version 3 of the License, or
+   the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.
 
    This program is distributed in the hope that it will be useful,

lib/chdir-long.h

@@ -1,9 +1,9 @@
 /* provide a chdir function that tries not to fail due to ENAMETOOLONG
-   Copyright (C) 2004-2005, 2009-2020 Free Software Foundation, Inc.
+   Copyright (C) 2004-2005, 2009-2022 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
-   the Free Software Foundation; either version 3 of the License, or
+   the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.
 
    This program is distributed in the hope that it will be useful,

lib/chmodat.c

@@ -1,3 +1,21 @@
+/* Change access permissions of a file at a directory.
+
+   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published
+   by the Free Software Foundation, either version 3 of the License,
+   or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
 #include <config.h>
+
 #define CHMODAT_INLINE _GL_EXTERN_INLINE
 #include "openat.h"

lib/chown.c

@@ -1,19 +1,19 @@
 /* provide consistent interface to chown for systems that don't interpret
    an ID of -1 as meaning "don't change the corresponding ID".
 
-   Copyright (C) 1997, 2004-2007, 2009-2020 Free Software Foundation, Inc.
+   Copyright (C) 1997, 2004-2007, 2009-2022 Free Software Foundation, Inc.
 
-   This program is free software: you can redistribute it and/or modify
-   it under the terms of the GNU General Public License as published by
-   the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
 
-   This program is distributed in the hope that it will be useful,
+   This file is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-   GNU General Public License for more details.
+   GNU Lesser General Public License for more details.
 
-   You should have received a copy of the GNU General Public License
+   You should have received a copy of the GNU Lesser General Public License
    along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
 
 /* written by Jim Meyering */
@@ -33,8 +33,8 @@
 
 /* Simple stub that always fails with ENOSYS, for mingw.  */
 int
-chown (const char *file _GL_UNUSED, uid_t uid _GL_UNUSED,
-       gid_t gid _GL_UNUSED)
+chown (_GL_UNUSED const char *file, _GL_UNUSED uid_t uid,
+       _GL_UNUSED gid_t gid)
 {
   errno = ENOSYS;
   return -1;
@@ -87,7 +87,7 @@ rpl_chown (const char *file, uid_t uid, gid_t gid)
        on the symlink itself.  To work around that, we open the
        file (but this can fail due to lack of read or write permission) and
        use fchown on the resulting descriptor.  */
-    int open_flags = O_NONBLOCK | O_NOCTTY;
+    int open_flags = O_NONBLOCK | O_NOCTTY | O_CLOEXEC;
     int fd = open (file, O_RDONLY | open_flags);
     if (0 <= fd
         || (errno == EACCES

lib/chownat.c

@@ -1,3 +1,21 @@
+/* Change owner of a file at a directory.
+
+   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published
+   by the Free Software Foundation, either version 3 of the License,
+   or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
 #include <config.h>
+
 #define CHOWNAT_INLINE _GL_EXTERN_INLINE
 #include "openat.h"

lib/cl-strtod.c

@@ -1,6 +1,6 @@
 /* Convert string to double in the current locale, falling back on the C locale.
 
-   Copyright 2019-2020 Free Software Foundation, Inc.
+   Copyright 2019-2022 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by

lib/cl-strtod.h

@@ -1,2 +1,4 @@
-double cl_strtod (char const *, char **restrict);
-long double cl_strtold (char const *, char **restrict);
+double cl_strtod (char const *, char **restrict)
+  _GL_ATTRIBUTE_NONNULL ((1));
+long double cl_strtold (char const *, char **restrict)
+  _GL_ATTRIBUTE_NONNULL ((1));

lib/cloexec.c

@@ -1,21 +1,21 @@
 /* cloexec.c - set or clear the close-on-exec descriptor flag
 
-   Copyright (C) 1991, 2004-2006, 2009-2020 Free Software Foundation, Inc.
+   Copyright (C) 1991, 2004-2006, 2009-2022 Free Software Foundation, Inc.
 
-   This program is free software: you can redistribute it and/or modify
-   it under the terms of the GNU General Public License as published by
-   the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
 
-   This program is distributed in the hope that it will be useful,
+   This file is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-   GNU General Public License for more details.
+   GNU Lesser General Public License for more details.
 
-   You should have received a copy of the GNU General Public License
-   along with this program.  If not, see <https://www.gnu.org/licenses/>.
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
 
-   The code is taken from glibc/manual/llio.texi  */
+/* The code is taken from glibc/manual/llio.texi  */
 
 #include <config.h>
 

lib/cloexec.h

@@ -1,21 +1,19 @@
 /* cloexec.c - set or clear the close-on-exec descriptor flag
 
-   Copyright (C) 2004, 2009-2020 Free Software Foundation, Inc.
+   Copyright (C) 2004, 2009-2022 Free Software Foundation, Inc.
 
-   This program is free software: you can redistribute it and/or modify
-   it under the terms of the GNU General Public License as published by
-   the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
 
-   This program is distributed in the hope that it will be useful,
+   This file is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-   GNU General Public License for more details.
+   GNU Lesser General Public License for more details.
 
-   You should have received a copy of the GNU General Public License
-   along with this program.  If not, see <https://www.gnu.org/licenses/>.
-
-*/
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
 
 #include <stdbool.h>
 

lib/close-stream.c

@@ -1,10 +1,10 @@
 /* Close a stream, with nicer error checking than fclose's.
 
-   Copyright (C) 1998-2002, 2004, 2006-2020 Free Software Foundation, Inc.
+   Copyright (C) 1998-2002, 2004, 2006-2022 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
-   the Free Software Foundation; either version 3 of the License, or
+   the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.
 
    This program is distributed in the hope that it will be useful,

lib/close-stream.h

@@ -1,2 +1,20 @@
+/* Close a stream, with nicer error checking than fclose's.
+
+   Copyright (C) 2006-2022 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published
+   by the Free Software Foundation, either version 3 of the License,
+   or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
 #include <stdio.h>
+
 int close_stream (FILE *stream);

lib/close.c

@@ -1,17 +1,17 @@
 /* close replacement.
-   Copyright (C) 2008-2020 Free Software Foundation, Inc.
+   Copyright (C) 2008-2022 Free Software Foundation, Inc.
 
-   This program is free software: you can redistribute it and/or modify
-   it under the terms of the GNU General Public License as published by
-   the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
 
-   This program is distributed in the hope that it will be useful,
+   This file is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-   GNU General Public License for more details.
+   GNU Lesser General Public License for more details.
 
-   You should have received a copy of the GNU General Public License
+   You should have received a copy of the GNU Lesser General Public License
    along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
 
 #include <config.h>
@@ -28,7 +28,8 @@
 
 #undef close
 
-#if HAVE_MSVC_INVALID_PARAMETER_HANDLER
+#if defined _WIN32 && !defined __CYGWIN__
+# if HAVE_MSVC_INVALID_PARAMETER_HANDLER
 static int
 close_nothrow (int fd)
 {
@@ -36,7 +37,7 @@ close_nothrow (int fd)
 
   TRY_MSVC_INVAL
     {
-      result = close (fd);
+      result = _close (fd);
     }
   CATCH_MSVC_INVAL
     {
@@ -47,6 +48,9 @@ close_nothrow (int fd)
 
   return result;
 }
+# else
+#  define close_nothrow _close
+# endif
 #else
 # define close_nothrow close
 #endif

lib/closedir.c

@@ -1,17 +1,17 @@
 /* Stop reading the entries of a directory.
-   Copyright (C) 2006-2020 Free Software Foundation, Inc.
+   Copyright (C) 2006-2022 Free Software Foundation, Inc.
 
-   This program is free software: you can redistribute it and/or modify
-   it under the terms of the GNU General Public License as published by
-   the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
 
-   This program is distributed in the hope that it will be useful,
+   This file is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-   GNU General Public License for more details.
+   GNU Lesser General Public License for more details.
 
-   You should have received a copy of the GNU General Public License
+   You should have received a copy of the GNU Lesser General Public License
    along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
 
 #include <config.h>

lib/closein.c

@@ -1,10 +1,10 @@
 /* Close standard input, rewinding seekable stdin if necessary.
 
-   Copyright (C) 2007, 2009-2020 Free Software Foundation, Inc.
+   Copyright (C) 2007, 2009-2022 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
-   the Free Software Foundation; either version 3 of the License, or
+   the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.
 
    This program is distributed in the hope that it will be useful,

lib/closein.h

@@ -1,10 +1,10 @@
 /* Close standard input, rewinding seekable stdin if necessary.
 
-   Copyright (C) 2007, 2009-2020 Free Software Foundation, Inc.
+   Copyright (C) 2007, 2009-2022 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
-   the Free Software Foundation; either version 3 of the License, or
+   the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.
 
    This program is distributed in the hope that it will be useful,

lib/closeout.c

@@ -1,11 +1,11 @@
 /* Close standard output and standard error, exiting with a diagnostic on error.
 
-   Copyright (C) 1998-2002, 2004, 2006, 2008-2020 Free Software Foundation,
+   Copyright (C) 1998-2002, 2004, 2006, 2008-2022 Free Software Foundation,
    Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
-   the Free Software Foundation; either version 3 of the License, or
+   the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.
 
    This program is distributed in the hope that it will be useful,

lib/closeout.h

@@ -1,11 +1,11 @@
 /* Close standard output and standard error.
 
-   Copyright (C) 1998, 2000, 2003-2004, 2006, 2008-2020 Free Software
+   Copyright (C) 1998, 2000, 2003-2004, 2006, 2008-2022 Free Software
    Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
-   the Free Software Foundation; either version 3 of the License, or
+   the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.
 
    This program is distributed in the hope that it will be useful,

lib/configmake.h

@@ -2,30 +2,30 @@
 #if HAVE_WINSOCK2_H
 # include <winsock2.h> /* avoid mingw pollution on DATADIR */
 #endif
-#define PREFIX "/data/coreutils"
-#define EXEC_PREFIX "/data/coreutils"
-#define BINDIR "/data/coreutils/bin"
-#define SBINDIR "/data/coreutils/sbin"
-#define LIBEXECDIR "/data/coreutils/libexec"
-#define DATAROOTDIR "/data/coreutils/share"
-#define DATADIR "/data/coreutils/share"
-#define SYSCONFDIR "/data/coreutils/etc"
-#define SHAREDSTATEDIR "/data/coreutils/com"
-#define LOCALSTATEDIR "/data/coreutils/var"
-#define RUNSTATEDIR "/data/coreutils/var/run"
-#define INCLUDEDIR "/data/coreutils/include"
+#define PREFIX "/usr/local"
+#define EXEC_PREFIX "/usr/local"
+#define BINDIR "/usr/local/bin"
+#define SBINDIR "/usr/local/sbin"
+#define LIBEXECDIR "/usr/local/libexec"
+#define DATAROOTDIR "/usr/local/share"
+#define DATADIR "/usr/local/share"
+#define SYSCONFDIR "/usr/local/etc"
+#define SHAREDSTATEDIR "/usr/local/com"
+#define LOCALSTATEDIR "/usr/local/var"
+#define RUNSTATEDIR "/usr/local/var/run"
+#define INCLUDEDIR "/usr/local/include"
 #define OLDINCLUDEDIR "/usr/include"
-#define DOCDIR "/data/coreutils/share/doc/coreutils"
-#define INFODIR "/data/coreutils/share/info"
-#define HTMLDIR "/data/coreutils/share/doc/coreutils"
-#define DVIDIR "/data/coreutils/share/doc/coreutils"
-#define PDFDIR "/data/coreutils/share/doc/coreutils"
-#define PSDIR "/data/coreutils/share/doc/coreutils"
-#define LIBDIR "/data/coreutils/lib"
-#define LISPDIR "/data/coreutils/share/emacs/site-lisp"
-#define LOCALEDIR "/data/coreutils/share/locale"
-#define MANDIR "/data/coreutils/share/man"
-#define PKGDATADIR "/data/coreutils/share/coreutils"
-#define PKGINCLUDEDIR "/data/coreutils/include/coreutils"
-#define PKGLIBDIR "/data/coreutils/lib/coreutils"
-#define PKGLIBEXECDIR "/data/coreutils/libexec/coreutils"
+#define DOCDIR "/usr/local/share/doc/coreutils"
+#define INFODIR "/usr/local/share/info"
+#define HTMLDIR "/usr/local/share/doc/coreutils"
+#define DVIDIR "/usr/local/share/doc/coreutils"
+#define PDFDIR "/usr/local/share/doc/coreutils"
+#define PSDIR "/usr/local/share/doc/coreutils"
+#define LIBDIR "/usr/local/lib"
+#define LISPDIR "/usr/local/share/emacs/site-lisp"
+#define LOCALEDIR "/usr/local/share/locale"
+#define MANDIR "/usr/local/share/man"
+#define PKGDATADIR "/usr/local/share/coreutils"
+#define PKGINCLUDEDIR "/usr/local/include/coreutils"
+#define PKGLIBDIR "/usr/local/lib/coreutils"
+#define PKGLIBEXECDIR "/usr/local/libexec/coreutils"