1/* Change the protections of file relative to an open directory. 2 Copyright (C) 2006, 2009-2010 Free Software Foundation, Inc. 3 4 This program is free software: you can redistribute it and/or modify 5 it under the terms of the GNU General Public License as published by 6 the Free Software Foundation; either version 3 of the License, or 7 (at your option) any later version. 8 9 This program is distributed in the hope that it will be useful, 10 but WITHOUT ANY WARRANTY; without even the implied warranty of 11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 12 GNU General Public License for more details. 13 14 You should have received a copy of the GNU General Public License 15 along with this program. If not, see <http://www.gnu.org/licenses/>. */ 16 17/* written by Jim Meyering */ 18 19#include <config.h> 20 21#include <sys/stat.h> 22 23#include <errno.h> 24 25#ifndef HAVE_LCHMOD 26/* Use a different name, to avoid conflicting with any 27 system-supplied declaration. */ 28# undef lchmod 29# define lchmod lchmod_rpl 30static int 31lchmod (char const *f _GL_UNUSED, mode_t m _GL_UNUSED) 32{ 33 errno = ENOSYS; 34 return -1; 35} 36#endif 37 38/* Solaris 10 has no function like this. 39 Invoke chmod or lchmod on file, FILE, using mode MODE, in the directory 40 open on descriptor FD. If possible, do it without changing the 41 working directory. Otherwise, resort to using save_cwd/fchdir, 42 then (chmod|lchmod)/restore_cwd. If either the save_cwd or the 43 restore_cwd fails, then give a diagnostic and exit nonzero. 44 Note that an attempt to use a FLAG value of AT_SYMLINK_NOFOLLOW 45 on a system without lchmod support causes this function to fail. */ 46 47#define AT_FUNC_NAME fchmodat 48#define AT_FUNC_F1 lchmod 49#define AT_FUNC_F2 chmod 50#define AT_FUNC_USE_F1_COND AT_SYMLINK_NOFOLLOW 51#define AT_FUNC_POST_FILE_PARAM_DECLS , mode_t mode, int flag 52#define AT_FUNC_POST_FILE_ARGS , mode 53#include "at-func.c" 54