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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.
82 lines
2.6 KiB
C
82 lines
2.6 KiB
C
/* fxstat64 using Linux fstat64/statx system call.
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Copyright (C) 1997-2021 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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#define __fxstat __redirect___fxstat
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#include <sys/stat.h>
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#undef __fxstat
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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 <xstatconv.h>
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#include <statx_cp.h>
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#include <shlib-compat.h>
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#if LIB_COMPAT(libc, GLIBC_2_0, GLIBC_2_33)
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/* Get information about the file FD in BUF. */
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int
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___fxstat64 (int vers, int fd, struct stat64 *buf)
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{
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#if XSTAT_IS_XSTAT64
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# ifdef __NR_fstat64
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/* 64-bit kABI outlier, e.g. sparc64. */
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if (vers == _STAT_VER_KERNEL)
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return INLINE_SYSCALL_CALL (fstat, fd, buf);
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else
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{
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struct stat64 st64;
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int r = INLINE_SYSCALL_CALL (fstat64, fd, &st64);
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return r ?: __xstat32_conv (vers, &st64, (struct stat *) buf);
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}
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# elif defined __NR_fstat
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/* 64-bit kABI, e.g. aarch64, ia64, powerpc64*, s390x, riscv64,
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and x86_64. */
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if (vers == _STAT_VER_KERNEL || vers == _STAT_VER_LINUX)
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return INLINE_SYSCALL_CALL (fstat, fd, buf);
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return INLINE_SYSCALL_ERROR_RETURN_VALUE (EINVAL);
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# else
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/* New 32-bit kABIs with only 64-bit time_t support, e.g. arc, riscv32. */
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struct statx tmp;
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int r = INLINE_SYSCALL_CALL (statx, fd, "", AT_EMPTY_PATH,
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STATX_BASIC_STATS, &tmp);
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if (r == 0)
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__cp_stat64_statx (buf, &tmp);
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return r;
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# endif
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#else
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/* All kABIs with non-LFS support, e.g. arm, csky, i386, hppa, m68k,
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microblaze, mips32, nios2, sh, powerpc32, and sparc32. */
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return INLINE_SYSCALL_CALL (fstat64, fd, buf);
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#endif /* XSTAT_IS_XSTAT64 */
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}
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#if SHLIB_COMPAT(libc, GLIBC_2_1, GLIBC_2_2)
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versioned_symbol (libc, ___fxstat64, __fxstat64, GLIBC_2_2);
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strong_alias (___fxstat64, __old__fxstat64)
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compat_symbol (libc, __old__fxstat64, __fxstat64, GLIBC_2_1);
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#else
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strong_alias (___fxstat64, __fxstat64)
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#endif
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#if XSTAT_IS_XSTAT64
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strong_alias (___fxstat64, __fxstat)
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#endif
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#endif /* LIB_COMPAT */
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