u-tools/apps/tar/gnu/fchmodat.c

   1 /* -*- buffer-read-only: t -*- vi: set ro: */
   2 /* DO NOT EDIT! GENERATED AUTOMATICALLY! */
   3 /* Change the protections of file relative to an open directory.
   4    Copyright (C) 2006, 2009-2011 Free Software Foundation, Inc.
   5
   6    This program is free software: you can redistribute it and/or modify
   7    it under the terms of the GNU General Public License as published by
   8    the Free Software Foundation; either version 3 of the License, or
   9    (at your option) any later version.
  10
  11    This program is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14    GNU General Public License for more details.
  15
  16    You should have received a copy of the GNU General Public License
  17    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  18
  19 /* written by Jim Meyering */
  20
  21 #include <config.h>
  22
  23 #include <sys/stat.h>
  24
  25 #include <errno.h>
  26
  27 #ifndef HAVE_LCHMOD
  28 /* Use a different name, to avoid conflicting with any
  29    system-supplied declaration.  */
  30 # undef lchmod
  31 # define lchmod lchmod_rpl
  32 static int
  33 lchmod (char const *f _GL_UNUSED, mode_t m _GL_UNUSED)
  34 {
  35   errno = ENOSYS;
  36   return -1;
  37 }
  38 #endif
  39
  40 /* Solaris 10 has no function like this.
  41    Invoke chmod or lchmod on file, FILE, using mode MODE, in the directory
  42    open on descriptor FD.  If possible, do it without changing the
  43    working directory.  Otherwise, resort to using save_cwd/fchdir,
  44    then (chmod|lchmod)/restore_cwd.  If either the save_cwd or the
  45    restore_cwd fails, then give a diagnostic and exit nonzero.
  46    Note that an attempt to use a FLAG value of AT_SYMLINK_NOFOLLOW
  47    on a system without lchmod support causes this function to fail.  */
  48
  49 #define AT_FUNC_NAME fchmodat
  50 #define AT_FUNC_F1 lchmod
  51 #define AT_FUNC_F2 chmod
  52 #define AT_FUNC_USE_F1_COND AT_SYMLINK_NOFOLLOW
  53 #define AT_FUNC_POST_FILE_PARAM_DECLS , mode_t mode, int flag
  54 #define AT_FUNC_POST_FILE_ARGS        , mode
  55 #include "at-func.c"