rm_/lib/fdopen.c
2020-09-02 16:47:03 +08:00

70 lines
1.5 KiB
C

/* Open a stream with a given file descriptor.
Copyright (C) 2011-2020 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/>. */
#include <config.h>
/* Specification. */
#include <stdio.h>
#include <errno.h>
#if HAVE_MSVC_INVALID_PARAMETER_HANDLER
# include "msvc-inval.h"
#endif
#undef fdopen
#if HAVE_MSVC_INVALID_PARAMETER_HANDLER
static FILE *
fdopen_nothrow (int fd, const char *mode)
{
FILE *result;
TRY_MSVC_INVAL
{
result = fdopen (fd, mode);
}
CATCH_MSVC_INVAL
{
result = NULL;
}
DONE_MSVC_INVAL;
return result;
}
#else
# define fdopen_nothrow fdopen
#endif
FILE *
rpl_fdopen (int fd, const char *mode)
{
int saved_errno = errno;
FILE *fp;
errno = 0;
fp = fdopen_nothrow (fd, mode);
if (fp == NULL)
{
if (errno == 0)
errno = EBADF;
}
else
errno = saved_errno;
return fp;
}