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51 lines
2.0 KiB
C
51 lines
2.0 KiB
C
/* Change the protections of file relative to an open directory.
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Copyright (C) 2006 Free Software Foundation, Inc.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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This program 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
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software Foundation,
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Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
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/* written by Jim Meyering */
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#include <config.h>
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#include "openat.h"
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#include "dirname.h" /* solely for definition of IS_ABSOLUTE_FILE_NAME */
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#include "save-cwd.h"
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#include "openat-priv.h"
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#ifndef HAVE_LCHMOD
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/* Use a different name, to avoid conflicting with any
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system-supplied declaration. */
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# undef lchmod
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# define lchmod lchmod_rpl
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static int lchmod (char const *f, mode_t m) { errno = ENOSYS; return -1; }
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#endif
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/* Solaris 10 has no function like this.
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Invoke chmod or lchmod on file, FILE, using mode MODE, in the directory
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open on descriptor FD. If possible, do it without changing the
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working directory. Otherwise, resort to using save_cwd/fchdir,
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then mkdir/restore_cwd. If either the save_cwd or the restore_cwd
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fails, then give a diagnostic and exit nonzero.
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Note that an attempt to use a FLAG value of AT_SYMLINK_NOFOLLOW
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on a system without lchmod support causes this function to fail. */
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#define AT_FUNC_NAME fchmodat
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#define AT_FUNC_F1 lchmod
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#define AT_FUNC_F2 chmod
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#define AT_FUNC_USE_F1_COND flag == AT_SYMLINK_NOFOLLOW
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#define AT_FUNC_POST_FILE_PARAM_DECLS , mode_t mode, int flag
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#define AT_FUNC_POST_FILE_ARGS , mode
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#include "at-func.c"
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