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 #include <config.h>
   7
   8 #ifdef HAVE_UNISTD_H
   9 #include <unistd.h>
  10 #endif
  11
  12 #include <stdio.h>
  13 #include <errno.h>
  14
  15 #include "builtins.h"
  16 #include "shell.h"
  17
  18 #ifndef errno
  19 extern int errno;
  20 #endif
  21
  22 unlink_builtin (list)
  23      WORD_LIST *list;
  24 {
  25   if (list == 0)
  26     {
  27       builtin_usage ();
  28       return (EX_USAGE);
  29     }
  30
  31   if (unlink (list->word->word) != 0)
  32     {
  33       builtin_error ("%s: cannot unlink: %s", list->word->word, strerror (errno));
  34       return (EXECUTION_FAILURE);
  35     }
  36
  37   return (EXECUTION_SUCCESS);
  38 }
  39
  40 char *unlink_doc[] = {
  41         "Remove a directory entry.",
  42         (char *)NULL
  43 };
  44
  45 struct builtin unlink_struct = {
  46         "unlink",               /* builtin name */
  47         unlink_builtin,         /* function implementing the builtin */
  48         BUILTIN_ENABLED,        /* initial flags for builtin */
  49         unlink_doc,             /* array of long documentation strings. */
  50         "unlink name",          /* usage synopsis; becomes short_doc */
  51         0                       /* reserved for internal use */
  52 };