coreutils/rm.c

   1 /* vi: set sw=4 ts=4: */
   2 /*
   3  * Mini rm implementation for busybox
   4  *
   5  * Copyright (C) 2001 Matt Kraai <kraai@alumni.carnegiemellon.edu>
   6  *
   7  * Licensed under GPLv2 or later, see file LICENSE in this source tree.
   8  */
   9 /* Mar 16, 2003      Manuel Novoa III   (mjn3@codepoet.org)
  10  *
  11  * Size reduction.
  12  */
  13 //config:config RM
  14 //config:       bool "rm (5.5 kb)"
  15 //config:       default y
  16 //config:       help
  17 //config:       rm is used to remove files or directories.
  18
  19 //applet:IF_RM(APPLET_NOEXEC(rm, rm, BB_DIR_BIN, BB_SUID_DROP, rm))
  20 /* was NOFORK, but then "rm -i FILE" can't be ^C'ed if run by hush */
  21
  22 //kbuild:lib-$(CONFIG_RM) += rm.o
  23
  24 /* BB_AUDIT SUSv3 compliant */
  25 /* http://www.opengroup.org/onlinepubs/007904975/utilities/rm.html */
  26
  27 //usage:#define rm_trivial_usage
  28 //usage:       "[-irf] FILE..."
  29 //usage:#define rm_full_usage "\n\n"
  30 //usage:       "Remove (unlink) FILEs\n"
  31 //usage:     "\n        -i      Always prompt before removing"
  32 //usage:     "\n        -f      Never prompt"
  33 //usage:     "\n        -R,-r   Recurse"
  34 //usage:
  35 //usage:#define rm_example_usage
  36 //usage:       "$ rm -rf /tmp/foo\n"
  37
  38 #include "libbb.h"
  39
  40 /* This is a NOEXEC applet. Be very careful! */
  41
  42 int rm_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
  43 int rm_main(int argc UNUSED_PARAM, char **argv)
  44 {
  45         int status = 0;
  46         int flags = 0;
  47         unsigned opt;
  48
  49         opt = getopt32(argv, "^" "fiRrv" "\0" "f-i:i-f");
  50         argv += optind;
  51         if (opt & 1)
  52                 flags |= FILEUTILS_FORCE;
  53         if (opt & 2)
  54                 flags |= FILEUTILS_INTERACTIVE;
  55         if (opt & (8|4))
  56                 flags |= FILEUTILS_RECUR;
  57         if ((opt & 16) && FILEUTILS_VERBOSE)
  58                 flags |= FILEUTILS_VERBOSE;
  59
  60         if (*argv != NULL) {
  61                 do {
  62                         const char *base = bb_get_last_path_component_strip(*argv);
  63
  64                         if (DOT_OR_DOTDOT(base)) {
  65                                 bb_simple_error_msg("can't remove '.' or '..'");
  66                         } else if (remove_file(*argv, flags) >= 0) {
  67                                 continue;
  68                         }
  69                         status = 1;
  70                 } while (*++argv);
  71         } else if (!(flags & FILEUTILS_FORCE)) {
  72                 bb_show_usage();
  73         }
  74
  75         return status;
  76 }