examples/loadables/unlink.c

   1 /* unlink - remove a directory entry */
   2
   3 /* Should only be used to remove directories by a superuser prepared to let
   4    fsck clean up the file system. */
   5
   6 /*
   7    Copyright (C) 1999-2009 Free Software Foundation, Inc.
   8
   9    This file is part of GNU Bash.
  10    Bash is free software: you can redistribute it and/or modify
  11    it under the terms of the GNU General Public License as published by
  12    the Free Software Foundation, either version 3 of the License, or
  13    (at your option) any later version.
  14
  15    Bash is distributed in the hope that it will be useful,
  16    but WITHOUT ANY WARRANTY; without even the implied warranty of
  17    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18    GNU General Public License for more details.
  19
  20    You should have received a copy of the GNU General Public License
  21    along with Bash.  If not, see <http://www.gnu.org/licenses/>.
  22 */
  23
  24 #include <config.h>
  25
  26 #ifdef HAVE_UNISTD_H
  27 #include <unistd.h>
  28 #endif
  29
  30 #include <stdio.h>
  31 #include <errno.h>
  32
  33 #include "builtins.h"
  34 #include "shell.h"
  35 #include "common.h"
  36
  37 #ifndef errno
  38 extern int errno;
  39 #endif
  40
  41 unlink_builtin (list)
  42      WORD_LIST *list;
  43 {
  44   if (list == 0)
  45     {
  46       builtin_usage ();
  47       return (EX_USAGE);
  48     }
  49
  50   if (unlink (list->word->word) != 0)
  51     {
  52       builtin_error ("%s: cannot unlink: %s", list->word->word, strerror (errno));
  53       return (EXECUTION_FAILURE);
  54     }
  55
  56   return (EXECUTION_SUCCESS);
  57 }
  58
  59 char *unlink_doc[] = {
  60         "Remove a directory entry.",
  61         "",
  62         "Forcibly remove a directory entry, even if it's a directory.",
  63         (char *)NULL
  64 };
  65
  66 struct builtin unlink_struct = {
  67         "unlink",               /* builtin name */
  68         unlink_builtin,         /* function implementing the builtin */
  69         BUILTIN_ENABLED,        /* initial flags for builtin */
  70         unlink_doc,             /* array of long documentation strings. */
  71         "unlink name",          /* usage synopsis; becomes short_doc */
  72         0                       /* reserved for internal use */
  73 };