glibc/sysdeps/unix/sysv/linux/access.c

48 lines
1.4 KiB
C

/* Linux implementation for access function.
Copyright (C) 2016-2017 Free Software Foundation, Inc.
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 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.
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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library. If not, see
<http://www.gnu.org/licenses/>. */
#include <fcntl.h>
#include <unistd.h>
#include <sysdep-cancel.h>
int
__access_noerrno (const char *file, int type)
{
int res;
INTERNAL_SYSCALL_DECL (err);
#ifdef __NR_access
res = INTERNAL_SYSCALL_CALL (access, err, file, type);
#else
res = INTERNAL_SYSCALL_CALL (faccessat, err, AT_FDCWD, file, type);
#endif
if (INTERNAL_SYSCALL_ERROR_P (res, err))
return INTERNAL_SYSCALL_ERRNO (res, err);
return 0;
}
int
__access (const char *file, int type)
{
#ifdef __NR_access
return INLINE_SYSCALL_CALL (access, file, type);
#else
return INLINE_SYSCALL_CALL (faccessat, AT_FDCWD, file, type);
#endif
}
weak_alias (__access, access)