release/src/router/busybox/coreutils/rmdir.c

   1 /* vi: set sw=4 ts=4: */
   2 /*
   3  * rmdir implementation for busybox
   4  *
   5  * Copyright (C) 2003  Manuel Novoa III  <mjn3@codepoet.org>
   6  *
   7  * Licensed under GPLv2 or later, see file LICENSE in this source tree.
   8  */
   9
  10 /* BB_AUDIT SUSv3 compliant */
  11 /* http://www.opengroup.org/onlinepubs/007904975/utilities/rmdir.html */
  12
  13 //usage:#define rmdir_trivial_usage
  14 //usage:       "[OPTIONS] DIRECTORY..."
  15 //usage:#define rmdir_full_usage "\n\n"
  16 //usage:       "Remove DIRECTORY if it is empty\n"
  17 //usage:        IF_FEATURE_RMDIR_LONG_OPTIONS(
  18 //usage:     "\n        -p|--parents    Include parents"
  19 //usage:     "\n        --ignore-fail-on-non-empty"
  20 //usage:        )
  21 //usage:        IF_NOT_FEATURE_RMDIR_LONG_OPTIONS(
  22 //usage:     "\n        -p      Include parents"
  23 //usage:        )
  24 //usage:
  25 //usage:#define rmdir_example_usage
  26 //usage:       "# rmdir /tmp/foo\n"
  27
  28 #include "libbb.h"
  29
  30 /* This is a NOFORK applet. Be very careful! */
  31
  32
  33 #define PARENTS          (1 << 0)
  34 #define VERBOSE          ((1 << 1) * ENABLE_FEATURE_VERBOSE)
  35 #define IGNORE_NON_EMPTY (1 << 2)
  36
  37 int rmdir_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
  38 int rmdir_main(int argc UNUSED_PARAM, char **argv)
  39 {
  40         int status = EXIT_SUCCESS;
  41         int flags;
  42         char *path;
  43
  44 #if ENABLE_FEATURE_RMDIR_LONG_OPTIONS
  45         static const char rmdir_longopts[] ALIGN1 =
  46                 "parents\0"                  No_argument "p"
  47                 /* Debian etch: many packages fail to be purged or installed
  48                  * because they desperately want this option: */
  49                 "ignore-fail-on-non-empty\0" No_argument "\xff"
  50                 IF_FEATURE_VERBOSE(
  51                 "verbose\0"                  No_argument "v"
  52                 )
  53                 ;
  54         applet_long_options = rmdir_longopts;
  55 #endif
  56         flags = getopt32(argv, "pv");
  57         argv += optind;
  58
  59         if (!*argv) {
  60                 bb_show_usage();
  61         }
  62
  63         do {
  64                 path = *argv;
  65
  66                 while (1) {
  67                         if (flags & VERBOSE) {
  68                                 printf("rmdir: removing directory, '%s'\n", path);
  69                         }
  70
  71                         if (rmdir(path) < 0) {
  72 #if ENABLE_FEATURE_RMDIR_LONG_OPTIONS
  73                                 if ((flags & IGNORE_NON_EMPTY) && errno == ENOTEMPTY)
  74                                         break;
  75 #endif
  76                                 bb_perror_msg("'%s'", path);  /* Match gnu rmdir msg. */
  77                                 status = EXIT_FAILURE;
  78                         } else if (flags & PARENTS) {
  79                                 /* Note: path was not "" since rmdir succeeded. */
  80                                 path = dirname(path);
  81                                 /* Path is now just the parent component.  Dirname
  82                                  * returns "." if there are no parents.
  83                                  */
  84                                 if (NOT_LONE_CHAR(path, '.')) {
  85                                         continue;
  86                                 }
  87                         }
  88                         break;
  89                 }
  90         } while (*++argv);
  91
  92         return status;
  93 }