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101 lines
2.7 KiB
C
101 lines
2.7 KiB
C
/* lxstat using old-style Unix lstat system call.
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Copyright (C) 1991,1995,1996,1997,1998,2000,2002,2003,2006
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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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<http://www.gnu.org/licenses/>. */
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/* Ho hum, if xstat == xstat64 we must get rid of the prototype or gcc
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will complain since they don't strictly match. */
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#define __lxstat64 __lxstat64_disable
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#include <errno.h>
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#include <stddef.h>
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#include <sys/stat.h>
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#include <kernel_stat.h>
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#include <sysdep.h>
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#include <sys/syscall.h>
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#include <bp-checks.h>
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#include <kernel-features.h>
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#include <xstatconv.h>
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#ifdef __NR_stat64
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# if __ASSUME_STAT64_SYSCALL == 0
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/* The variable is shared between all wrappers around *stat64 calls. */
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extern int __have_no_stat64;
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# endif
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#endif
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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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#if __ASSUME_STAT64_SYSCALL == 0
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struct kernel_stat kbuf;
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#endif
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int result;
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if (vers == _STAT_VER_KERNEL)
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return INLINE_SYSCALL (lstat, 2, CHECK_STRING (name), CHECK_1 ((struct kernel_stat *) buf));
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#if __ASSUME_STAT64_SYSCALL > 0
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{
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struct stat64 buf64;
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result = INLINE_SYSCALL (lstat64, 2, CHECK_STRING (name), __ptrvalue (&buf64));
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if (result == 0)
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result = __xstat32_conv (vers, &buf64, buf);
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return result;
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}
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#else
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# if defined __NR_stat64
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/* To support 32 bit UIDs, we have to use stat64. The normal stat call only returns
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16 bit UIDs. */
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if (! __have_no_stat64)
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{
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struct stat64 buf64;
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result = INLINE_SYSCALL (lstat64, 2, CHECK_STRING (name), __ptrvalue (&buf64));
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if (result == 0)
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result = __xstat32_conv (vers, &buf64, buf);
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if (result != -1 || errno != ENOSYS)
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return result;
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__have_no_stat64 = 1;
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}
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# endif
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result = INLINE_SYSCALL (lstat, 2, CHECK_STRING (name), __ptrvalue (&kbuf));
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if (result == 0)
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result = __xstat_conv (vers, &kbuf, buf);
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return result;
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#endif
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}
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hidden_def (__lxstat)
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weak_alias (__lxstat, _lxstat);
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#ifdef XSTAT_IS_XSTAT64
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#undef __lxstat64
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strong_alias (__lxstat, __lxstat64);
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hidden_ver (__lxstat, __lxstat64)
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#endif
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