glibc/sysdeps/unix/sysv/linux/stat64.c
Adhemerval Zanella aa03f722f3 linux: Add {f}stat{at} y2038 support
A new struct __stat{64}_t64 type is added with the required
__timespec64 time definition.  Only LFS is added, 64-bit time with
32-bit offsets is not supposed to be supported (no existing glibc
configuration supports such a combination).  It is done with an extra
__NR_statx call plus a conversion to the new __stat{64}_t64 type.
The statx call is done only for 32-bit time_t ABIs.

Internally some extra routines to copy from/to struct stat{64}
to struct __stat{64} used on multiple implementations (stat, fstat,
lstat, and fstatat) are added on a extra implementation
(stat_t64_cp.c).  Alse some extra routines to copy from statx to
__stat{64} is added on statx_cp.c.

Checked with a build for all affected ABIs. I also checked on x86_64,
i686, powerpc, powerpc64le, sparcv9, sparc64, s390, and s390x.

Reviewed-by: Lukasz Majewski <lukma@denx.de>
2020-10-09 17:02:07 -03:00

53 lines
1.5 KiB
C

/* 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/>. */
#define __stat __redirect___stat
#define stat __redirect_stat
#include <sys/stat.h>
#include <fcntl.h>
#include <kernel_stat.h>
#include <stat_t64_cp.h>
int
__stat64_time64 (const char *file, struct __stat64_t64 *buf)
{
return __fstatat64_time64 (AT_FDCWD, file, buf, 0);
}
#if __TIMESIZE != 64
hidden_def (__stat64_time64)
int
__stat64 (const char *file, struct stat64 *buf)
{
struct __stat64_t64 st_t64;
return __stat64_time64 (file, &st_t64)
?: __cp_stat64_t64_stat64 (&st_t64, buf);
}
#endif
#undef __stat
#undef stat
hidden_def (__stat64)
weak_alias (__stat64, stat64)
#if XSTAT_IS_XSTAT64
strong_alias (__stat64, __stat)
weak_alias (__stat64, stat)
#endif