mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-23 05:20:06 +00:00
46c1c765d1
This reverts commit 20b39d5946 for static
library. This avoids the need to rebuild the world for the case where
libstdc++ (and potentially other libraries) are linked to a old glibc.
To avoid requering to provide xstat symbols for newer ABIs (such as
riscv32) a new LIB_COMPAT macro is added. It is similar to SHLIB_COMPAT
but also works for static case (thus evaluating similar to SHLIB_COMPAT
for both shared and static case).
Checked with a check-abi on all affected ABIs. I also check if the
static library does contains the xstat symbols.
99 lines
3.2 KiB
C
99 lines
3.2 KiB
C
/* lxstat64 using Linux lstat64 system call.
|
|
Copyright (C) 1991-2021 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 __lxstat __redirect___lxstat
|
|
#include <sys/stat.h>
|
|
#undef __lxstat
|
|
#include <fcntl.h>
|
|
#include <kernel_stat.h>
|
|
#include <sysdep.h>
|
|
#include <xstatconv.h>
|
|
#include <statx_cp.h>
|
|
#include <shlib-compat.h>
|
|
|
|
#if LIB_COMPAT(libc, GLIBC_2_1, GLIBC_2_33)
|
|
|
|
/* Get information about the file NAME in BUF. */
|
|
|
|
int
|
|
___lxstat64 (int vers, const char *name, struct stat64 *buf)
|
|
{
|
|
#if XSTAT_IS_XSTAT64
|
|
# ifdef __NR_lstat64
|
|
/* 64-bit kABI outlier, e.g. sparc64. */
|
|
if (vers == _STAT_VER_KERNEL)
|
|
return INLINE_SYSCALL_CALL (lstat, name, buf);
|
|
else
|
|
{
|
|
struct stat64 st64;
|
|
int r = INLINE_SYSCALL_CALL (lstat64, name, &st64);
|
|
return r ?: __xstat32_conv (vers, &st64, (struct stat *) buf);
|
|
}
|
|
# elif defined __NR_lstat
|
|
/* Old 64-bit kABI, e.g. ia64, powerpc64*, s390x, and x86_64. */
|
|
if (vers == _STAT_VER_KERNEL || vers == _STAT_VER_LINUX)
|
|
return INLINE_SYSCALL_CALL (lstat, name, buf);
|
|
# elif defined __NR_newfstatat
|
|
/* New kABIs which uses generic 64-bit Linux ABI, e.g. aarch64, riscv64. */
|
|
if (vers == _STAT_VER_KERNEL)
|
|
return INLINE_SYSCALL_CALL (newfstatat, AT_FDCWD, name, buf,
|
|
AT_SYMLINK_NOFOLLOW);
|
|
# else
|
|
/* New 32-bit kABIs with only 64-bit time_t support, e.g. arc, riscv32. */
|
|
if (vers == _STAT_VER_KERNEL)
|
|
{
|
|
struct statx tmp;
|
|
int r = INLINE_SYSCALL_CALL (statx, AT_FDCWD, name,
|
|
AT_NO_AUTOMOUNT | AT_SYMLINK_NOFOLLOW,
|
|
STATX_BASIC_STATS, &tmp);
|
|
if (r == 0)
|
|
__cp_stat64_statx (buf, &tmp);
|
|
return r;
|
|
}
|
|
# endif
|
|
#else
|
|
# if STAT_IS_KERNEL_STAT
|
|
/* New kABIs which uses generic pre 64-bit time Linux ABI,
|
|
e.g. csky, nios2 */
|
|
if (vers == _STAT_VER_KERNEL)
|
|
return INLINE_SYSCALL_CALL (fstatat64, AT_FDCWD, name, buf,
|
|
AT_SYMLINK_NOFOLLOW);
|
|
# else
|
|
/* Old kABIs with old non-LFS support, e.g. arm, i386, hppa, m68k,
|
|
microblaze, s390, sh, mips32, powerpc32, and sparc32. */
|
|
return INLINE_SYSCALL_CALL (lstat64, name, buf);
|
|
# endif /* STAT_IS_KERNEL_STAT */
|
|
#endif /* XSTAT_IS_XSTAT64 */
|
|
|
|
return INLINE_SYSCALL_ERROR_RETURN_VALUE (EINVAL);
|
|
}
|
|
|
|
#if SHLIB_COMPAT(libc, GLIBC_2_1, GLIBC_2_2)
|
|
versioned_symbol (libc, ___lxstat64, __lxstat64, GLIBC_2_2);
|
|
strong_alias (___lxstat64, __old__lxstat64)
|
|
compat_symbol (libc, __old__lxstat64, __lxstat64, GLIBC_2_1);
|
|
#else
|
|
strong_alias (___lxstat64, __lxstat64);
|
|
#endif
|
|
|
|
#if XSTAT_IS_XSTAT64
|
|
strong_alias (___lxstat64,__lxstat)
|
|
#endif
|
|
|
|
#endif /* LIB_COMPAT */
|