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 //config:config RMDIR
  10 //config:       bool "rmdir (3.8 kb)"
  11 //config:       default y
  12 //config:       help
  13 //config:       rmdir is used to remove empty directories.
  14
  15 //applet:IF_RMDIR(APPLET_NOFORK(rmdir, rmdir, BB_DIR_BIN, BB_SUID_DROP, rmdir))
  16
  17 //kbuild:lib-$(CONFIG_RMDIR) += rmdir.o
  18
  19 /* BB_AUDIT SUSv3 compliant */
  20 /* http://www.opengroup.org/onlinepubs/007904975/utilities/rmdir.html */
  21
  22 //usage:#define rmdir_trivial_usage
  23 //usage:       "[-p] DIRECTORY..."
  24 //usage:#define rmdir_full_usage "\n\n"
  25 //usage:       "Remove DIRECTORY if it is empty\n"
  26 //usage:     "\n        -p      Include parents"
  27 //usage:        IF_LONG_OPTS(
  28 //usage:     "\n        --ignore-fail-on-non-empty"
  29 //usage:        )
  30 //usage:
  31 //usage:#define rmdir_example_usage
  32 //usage:       "# rmdir /tmp/foo\n"
  33
  34 #include "libbb.h"
  35
  36 /* This is a NOFORK applet. Be very careful! */
  37
  38
  39 #define PARENTS          (1 << 0)
  40 #define VERBOSE          ((1 << 1) * ENABLE_FEATURE_VERBOSE)
  41 #define IGNORE_NON_EMPTY ((1 << 2) * ENABLE_LONG_OPTS)
  42
  43 int rmdir_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
  44 int rmdir_main(int argc UNUSED_PARAM, char **argv)
  45 {
  46         int status = EXIT_SUCCESS;
  47         int flags;
  48         char *path;
  49
  50         flags = getopt32long(argv, "pv",
  51                 "parents\0"                  No_argument "p"
  52                 /* Debian etch: many packages fail to be purged or installed
  53                  * because they desperately want this option: */
  54                 "ignore-fail-on-non-empty\0" No_argument "\xff"
  55                 IF_FEATURE_VERBOSE(
  56                 "verbose\0"                  No_argument "v"
  57                 )
  58         );
  59         argv += optind;
  60
  61         if (!*argv) {
  62                 bb_show_usage();
  63         }
  64
  65         do {
  66                 path = *argv;
  67
  68                 while (1) {
  69                         if (flags & VERBOSE) {
  70                                 printf("rmdir: removing directory, '%s'\n", path);
  71                         }
  72
  73                         if (rmdir(path) < 0) {
  74 #if ENABLE_LONG_OPTS
  75                                 if ((flags & IGNORE_NON_EMPTY) && errno == ENOTEMPTY)
  76                                         break;
  77 #endif
  78                                 bb_perror_msg("'%s'", path);  /* Match gnu rmdir msg. */
  79                                 status = EXIT_FAILURE;
  80                         } else if (flags & PARENTS) {
  81                                 /* Note: path was not "" since rmdir succeeded. */
  82                                 path = dirname(path);
  83                                 /* Path is now just the parent component.  Dirname
  84                                  * returns "." if there are no parents.
  85                                  */
  86                                 if (NOT_LONE_CHAR(path, '.')) {
  87                                         continue;
  88                                 }
  89                         }
  90                         break;
  91                 }
  92         } while (*++argv);
  93
  94         return status;
  95 }