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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.
68 lines
1.9 KiB
C
68 lines
1.9 KiB
C
/* lxstat using old-style Unix stat system call.
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Copyright (C) 1991-2021 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <kernel_stat.h>
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#include <sysdep.h>
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#include <shlib-compat.h>
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#if !XSTAT_IS_XSTAT64
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# include <xstatconv.h>
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# include <xstatover.h>
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# if LIB_COMPAT(libc, GLIBC_2_0, GLIBC_2_33)
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/* Get information about the file NAME in BUF. */
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int
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__lxstat (int vers, const char *name, struct stat *buf)
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{
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switch (vers)
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{
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case _STAT_VER_KERNEL:
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{
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# if STAT_IS_KERNEL_STAT
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/* New kABIs which uses generic pre 64-bit time Linux ABI,
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e.g. csky, nios2 */
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int r = INLINE_SYSCALL_CALL (fstatat64, AT_FDCWD, name, buf,
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AT_SYMLINK_NOFOLLOW);
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return r ?: stat_overflow (buf);
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# else
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/* Old kABIs with old non-LFS support, e.g. arm, i386, hppa, m68k,
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microblaze, s390, sh, powerpc, and sparc. */
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return INLINE_SYSCALL_CALL (lstat, name, buf);
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# endif
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}
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default:
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{
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# if STAT_IS_KERNEL_STAT
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return INLINE_SYSCALL_ERROR_RETURN_VALUE (EINVAL);
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# else
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struct stat64 buf64;
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int r = INLINE_SYSCALL_CALL (lstat64, name, &buf64);
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return r ?: __xstat32_conv (vers, &buf64, buf);
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#endif
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}
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}
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}
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# endif /* SHLIB_COMPAT */
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#endif /* XSTAT_IS_XSTAT64 */
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