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/* Get file status. Linux version.
Copyright (C) 2020 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
<https://www.gnu.org/licenses/>. */
#include <sys/stat.h>
#include <kernel_stat.h>
#include <sysdep.h>
#if !XSTAT_IS_XSTAT64
# include <kstat_cp.h>
int
__fstatat (int fd, const char *file, struct stat *buf, int flag)
{
int r;
# if STAT_IS_KERNEL_STAT
/* New kABIs which uses generic pre 64-bit time Linux ABI, e.g.
csky, nios2 */
r = INTERNAL_SYSCALL_CALL (fstatat64, fd, file, buf, flag);
if (r == 0 && (buf->__st_ino_pad != 0
|| buf->__st_size_pad != 0
|| buf->__st_blocks_pad != 0))
return INLINE_SYSCALL_ERROR_RETURN_VALUE (EOVERFLOW);
# else
# ifdef __NR_fstatat64
/* Old KABIs with old non-LFS support, e.g. arm, i386, hppa, m68k, mips32,
microblaze, s390, sh, powerpc, and sparc. */
struct stat64 st64;
r = INTERNAL_SYSCALL_CALL (fstatat64, fd, file, &st64, flag);
if (r == 0)
{
if (! in_ino_t_range (st64.st_ino)
|| ! in_off_t_range (st64.st_size)
|| ! in_blkcnt_t_range (st64.st_blocks))
return INLINE_SYSCALL_ERROR_RETURN_VALUE (EOVERFLOW);
/* Clear internal pad and reserved fields. */
memset (buf, 0, sizeof (*buf));
buf->st_dev = st64.st_dev,
buf->st_ino = st64.st_ino;
buf->st_mode = st64.st_mode;
buf->st_nlink = st64.st_nlink;
buf->st_uid = st64.st_uid;
buf->st_gid = st64.st_gid;
buf->st_rdev = st64.st_rdev;
buf->st_size = st64.st_size;
buf->st_blksize = st64.st_blksize;
buf->st_blocks = st64.st_blocks;
buf->st_atim.tv_sec = st64.st_atim.tv_sec;
buf->st_atim.tv_nsec = st64.st_atim.tv_nsec;
buf->st_mtim.tv_sec = st64.st_mtim.tv_sec;
buf->st_mtim.tv_nsec = st64.st_mtim.tv_nsec;
buf->st_ctim.tv_sec = st64.st_ctim.tv_sec;
buf->st_ctim.tv_nsec = st64.st_ctim.tv_nsec;
return 0;
}
# else
/* 64-bit kabi outlier, e.g. mips64 and mips64-n32. */
struct kernel_stat kst;
r = INTERNAL_SYSCALL_CALL (newfstatat, fd, file, &kst, flag);
if (r == 0)
r = __cp_kstat_stat (&kst, buf);
# endif /* __nr_fstatat64 */
# endif /* STAT_IS_KERNEL_STAT */
return INTERNAL_SYSCALL_ERROR_P (r)
? INLINE_SYSCALL_ERROR_RETURN_VALUE (-r)
: 0;
}
weak_alias (__fstatat, fstatat)
#endif
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