mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-21 10:20:06 +00:00
72 lines
2.3 KiB
C
72 lines
2.3 KiB
C
/* Copyright (C) 2000-2014 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
|
|
<http://www.gnu.org/licenses/>. */
|
|
|
|
#include <errno.h>
|
|
#include <unistd.h>
|
|
|
|
#include <sysdep.h>
|
|
#include <sys/syscall.h>
|
|
#include <shlib-compat.h>
|
|
|
|
#include <linux/posix_types.h>
|
|
|
|
/*
|
|
In Linux 2.1.x the chown functions have been changed. A new function lchown
|
|
was introduced. The new chown now follows symlinks - the old chown and the
|
|
new lchown do not follow symlinks.
|
|
The new lchown function has the same number as the old chown had and the
|
|
new chown has a new number. When compiling with headers from Linux > 2.1.8x
|
|
it's impossible to run this libc with older kernels. In these cases libc
|
|
has therefore to route calls to chown to the old chown function.
|
|
*/
|
|
|
|
/* Running under Linux > 2.1.80. */
|
|
|
|
/* Consider moving to syscalls.list. */
|
|
|
|
int
|
|
__real_chown (const char *file, uid_t owner, gid_t group)
|
|
{
|
|
return INLINE_SYSCALL (chown32, 3, file, owner, group);
|
|
}
|
|
|
|
|
|
#if SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_1)
|
|
/* Compiling for compatibility. */
|
|
int
|
|
attribute_compat_text_section
|
|
__chown_is_lchown (const char *file, uid_t owner, gid_t group)
|
|
{
|
|
return __lchown (file, owner, group);
|
|
}
|
|
#endif
|
|
|
|
#if SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_1)
|
|
strong_alias (__chown_is_lchown, _chown_is_lchown)
|
|
compat_symbol (libc, __chown_is_lchown, __chown, GLIBC_2_0);
|
|
compat_symbol (libc, _chown_is_lchown, chown, GLIBC_2_0);
|
|
|
|
strong_alias (__real_chown, _real_chown)
|
|
versioned_symbol (libc, __real_chown, __chown, GLIBC_2_1);
|
|
versioned_symbol (libc, _real_chown, chown, GLIBC_2_1);
|
|
libc_hidden_ver (__real_chown, __chown)
|
|
#else
|
|
strong_alias (__real_chown, __chown)
|
|
libc_hidden_def (__chown)
|
|
weak_alias (__real_chown, chown)
|
|
#endif
|