53 lines
2.8 KiB
C
53 lines
2.8 KiB
C
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/* Prototypes for openat-style fd-relative SELinux functions
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Copyright (C) 2007, 2009-2020 Free Software Foundation, Inc.
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <https://www.gnu.org/licenses/>. */
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#include <selinux/selinux.h>
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#include <selinux/context.h>
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/* These are the dir-fd-relative variants of the functions without the
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"at" suffix. For example, getfileconat (AT_FDCWD, file, &c) is usually
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equivalent to getfilecon (file, &c). The emulation is accomplished
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by first attempting getfilecon ("/proc/self/fd/DIR_FD/FILE", &c).
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Failing that, simulate it via save_cwd/fchdir/getfilecon/restore_cwd.
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If either the save_cwd or the restore_cwd fails (relatively unlikely),
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then give a diagnostic and exit nonzero. */
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/* dir-fd-relative getfilecon. Set *CON to the SELinux security context
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of the file specified by DIR_FD and FILE and return the length of *CON.
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DIR_FD and FILE are interpreted as for fstatat[*]. A non-NULL *CON
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must be freed with freecon. Upon error, set *CON to NULL, set errno
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and return -1.
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[*] with flags=0 here, with flags=AT_SYMLINK_NOFOLLOW for lgetfileconat */
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int getfileconat (int dir_fd, char const *file, security_context_t *con);
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/* dir-fd-relative lgetfilecon. This function is just like getfileconat,
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except when DIR_FD and FILE specify a symlink: lgetfileconat operates on
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the symlink, while getfileconat operates on the referent of the symlink. */
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int lgetfileconat (int dir_fd, char const *file, security_context_t *con);
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/* dir-fd-relative setfilecon. Set the SELinux security context of
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the file specified by DIR_FD and FILE to CON. DIR_FD and FILE are
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interpreted as for fstatat[*]. Upon success, return 0.
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Otherwise, return -1 and set errno. */
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int setfileconat (int dir_fd, char const *file, security_context_t con);
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/* dir-fd-relative lsetfilecon. This function is just like setfileconat,
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except that rather than dereferencing a symlink, this function affects it. */
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/* dir-fd-relative lsetfilecon. This function is just like setfileconat,
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except when DIR_FD and FILE specify a symlink: lsetfileconat operates on
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the symlink, while setfileconat operates on the referent of the symlink. */
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int lsetfileconat (int dir_fd, char const *file, security_context_t con);
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