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a8481a8c8d
2000-01-12 Andreas Jaeger <aj@suse.de> * sysdeps/unix/sysv/linux/xstatconv.c (xstat32_conv): New function; needed for 32bit uid support. * sysdeps/unix/sysv/linux/i386/xstat.c: New file, handles 32bit uids correctly.
98 lines
2.8 KiB
C
98 lines
2.8 KiB
C
/* xstat using old-style Unix stat system call.
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Copyright (C) 1991,95,96,97,98,2000 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 Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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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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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If not,
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write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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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 __xstat64 __xstat64_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 <xstatconv.c>
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extern int __syscall_stat (const char *, struct kernel_stat *);
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#ifdef __NR_stat64
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extern int __syscall_stat64 (const char *, struct 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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__xstat (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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int result;
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result = INLINE_SYSCALL (stat64, 2, name, &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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#else
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struct kernel_stat kbuf;
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int result;
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if (vers == _STAT_VER_KERNEL)
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{
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return INLINE_SYSCALL (stat, 2, name, (struct kernel_stat *) buf);
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}
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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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int saved_errno = errno;
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result = INLINE_SYSCALL (stat64, 2, name, &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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__set_errno (saved_errno);
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__have_no_stat64 = 1;
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}
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# endif
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result = INLINE_SYSCALL (stat, 2, name, &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 /* __ASSUME_STAT64_SYSCALL */
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}
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weak_alias (__xstat, _xstat);
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#ifdef XSTAT_IS_XSTAT64
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#undef __xstat64
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strong_alias (__xstat, __xstat64);
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#endif
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