| /* 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 |