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Diffstat (limited to 'gnu/fchownat.c')
-rw-r--r-- | gnu/fchownat.c | 109 |
1 files changed, 0 insertions, 109 deletions
diff --git a/gnu/fchownat.c b/gnu/fchownat.c deleted file mode 100644 index 87c5493..0000000 --- a/gnu/fchownat.c +++ /dev/null @@ -1,109 +0,0 @@ -/* -*- buffer-read-only: t -*- vi: set ro: */ -/* DO NOT EDIT! GENERATED AUTOMATICALLY! */ -/* This function serves as replacement for a missing fchownat function, - as well as a work around for the fchownat bug in glibc-2.4: - <http://lists.ubuntu.com/archives/ubuntu-users/2006-September/093218.html> - when the buggy fchownat-with-AT_SYMLINK_NOFOLLOW operates on a symlink, it - mistakenly affects the symlink referent, rather than the symlink itself. - - Copyright (C) 2006-2007, 2009-2010 Free Software Foundation, Inc. - - This program is free software: you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation; either version 3 of the License, or - (at your option) any later version. - - This program 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 General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program. If not, see <http://www.gnu.org/licenses/>. */ - -/* written by Jim Meyering */ - -#include <config.h> - -#include <unistd.h> - -#include <errno.h> -#include <string.h> - -#include "openat.h" - -#if !HAVE_FCHOWNAT - -/* Replacement for Solaris' function by the same name. - Invoke chown or lchown on file, FILE, using OWNER and GROUP, in the - directory open on descriptor FD. If FLAG is AT_SYMLINK_NOFOLLOW, then - use lchown, otherwise, use chown. If possible, do it without changing - the working directory. Otherwise, resort to using save_cwd/fchdir, - then (chown|lchown)/restore_cwd. If either the save_cwd or the - restore_cwd fails, then give a diagnostic and exit nonzero. */ - -# define AT_FUNC_NAME fchownat -# define AT_FUNC_F1 lchown -# define AT_FUNC_F2 chown -# define AT_FUNC_USE_F1_COND AT_SYMLINK_NOFOLLOW -# define AT_FUNC_POST_FILE_PARAM_DECLS , uid_t owner, gid_t group, int flag -# define AT_FUNC_POST_FILE_ARGS , owner, group -# include "at-func.c" -# undef AT_FUNC_NAME -# undef AT_FUNC_F1 -# undef AT_FUNC_F2 -# undef AT_FUNC_USE_F1_COND -# undef AT_FUNC_POST_FILE_PARAM_DECLS -# undef AT_FUNC_POST_FILE_ARGS - -#else /* HAVE_FCHOWNAT */ - -# undef fchownat - -# if FCHOWNAT_NOFOLLOW_BUG - -/* Failure to handle AT_SYMLINK_NOFOLLOW requires the /proc/self/fd or - fchdir workaround to call lchown for lchownat, but there is no need - to penalize chownat. */ -static int -local_lchownat (int fd, char const *file, uid_t owner, gid_t group); - -# define AT_FUNC_NAME local_lchownat -# define AT_FUNC_F1 lchown -# define AT_FUNC_POST_FILE_PARAM_DECLS , uid_t owner, gid_t group -# define AT_FUNC_POST_FILE_ARGS , owner, group -# include "at-func.c" -# undef AT_FUNC_NAME -# undef AT_FUNC_F1 -# undef AT_FUNC_POST_FILE_PARAM_DECLS -# undef AT_FUNC_POST_FILE_ARGS - -# endif - -/* Work around bugs with trailing slash, using the same workarounds as - chown and lchown. */ - -int -rpl_fchownat (int fd, char const *file, uid_t owner, gid_t group, int flag) -{ -# if FCHOWNAT_NOFOLLOW_BUG - if (flag == AT_SYMLINK_NOFOLLOW) - return local_lchownat (fd, file, owner, group); -# endif -# if CHOWN_TRAILING_SLASH_BUG - { - size_t len = strlen (file); - struct stat st; - if (len && file[len - 1] == '/') - { - if (statat (fd, file, &st)) - return -1; - if (flag == AT_SYMLINK_NOFOLLOW) - return fchownat (fd, file, owner, group, 0); - } - } -# endif - return fchownat (fd, file, owner, group, flag); -} - -#endif /* HAVE_FCHOWNAT */ |