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With FEATURE_VERBOSE off, practically no size change. With it on: function old new delta remove_file 493 556 +63 install_main 719 765 +46 bb_make_directory 383 419 +36 rmdir_main 162 191 +29 copy_file 1516 1544 +28 mv_main 502 525 +23 cmp_main 677 693 +16 bbconfig_config_bz2 5264 5279 +15 mkdir_main 158 168 +10 install_longopts 66 76 +10 rm_main 167 175 +8 nexpr 840 846 +6 scan_tree 275 280 +5 fsck_main 1807 1811 +4 ed_main 2541 2545 +4 expand_one_var 1574 1575 +1 swap_on_off_main 420 418 -2 parse_command 1443 1440 -3 redirect 1279 1274 -5 do_load 946 918 -28 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 16/4 up/down: 304/-38) Total: 266 bytes Based on the patch by Igor Živković. Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
164 lines
4.0 KiB
C
164 lines
4.0 KiB
C
/* vi: set sw=4 ts=4: */
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/*
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* Mini mv implementation for busybox
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*
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* Copyright (C) 2000 by Matt Kraai <kraai@alumni.carnegiemellon.edu>
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* SELinux support by Yuichi Nakamura <ynakam@hitachisoft.jp>
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*
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* Licensed under GPLv2 or later, see file LICENSE in this source tree.
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*/
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/* Mar 16, 2003 Manuel Novoa III (mjn3@codepoet.org)
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*
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* Size reduction and improved error checking.
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*/
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#include "libbb.h"
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#include "libcoreutils/coreutils.h"
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//usage:#define mv_trivial_usage
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//usage: "[-fin] SOURCE DEST\n"
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//usage: "or: mv [-fin] SOURCE... DIRECTORY"
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//usage:#define mv_full_usage "\n\n"
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//usage: "Rename SOURCE to DEST, or move SOURCE(s) to DIRECTORY\n"
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//usage: "\n -f Don't prompt before overwriting"
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//usage: "\n -i Interactive, prompt before overwrite"
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//usage: "\n -n Don't overwrite an existing file"
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//usage:
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//usage:#define mv_example_usage
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//usage: "$ mv /tmp/foo /bin/bar\n"
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#if ENABLE_FEATURE_MV_LONG_OPTIONS
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static const char mv_longopts[] ALIGN1 =
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"interactive\0" No_argument "i"
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"force\0" No_argument "f"
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"no-clobber\0" No_argument "n"
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IF_FEATURE_VERBOSE(
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"verbose\0" No_argument "v"
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)
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;
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#endif
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#define OPT_FORCE (1 << 0)
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#define OPT_INTERACTIVE (1 << 1)
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#define OPT_NOCLOBBER (1 << 2)
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#define OPT_VERBOSE ((1 << 3) * ENABLE_FEATURE_VERBOSE)
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int mv_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
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int mv_main(int argc, char **argv)
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{
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struct stat dest_stat;
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const char *last;
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const char *dest;
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unsigned flags;
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int dest_exists;
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int status = 0;
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int copy_flag = 0;
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#if ENABLE_FEATURE_MV_LONG_OPTIONS
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applet_long_options = mv_longopts;
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#endif
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/* Need at least two arguments.
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* If more than one of -f, -i, -n is specified , only the final one
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* takes effect (it unsets previous options).
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*/
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opt_complementary = "-2:f-in:i-fn:n-fi";
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flags = getopt32(argv, "finv");
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argc -= optind;
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argv += optind;
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last = argv[argc - 1];
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if (argc == 2) {
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dest_exists = cp_mv_stat(last, &dest_stat);
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if (dest_exists < 0) {
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return EXIT_FAILURE;
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}
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if (!(dest_exists & 2)) { /* last is not a directory */
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dest = last;
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goto DO_MOVE;
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}
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}
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do {
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dest = concat_path_file(last, bb_get_last_path_component_strip(*argv));
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dest_exists = cp_mv_stat(dest, &dest_stat);
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if (dest_exists < 0) {
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goto RET_1;
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}
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DO_MOVE:
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if (dest_exists) {
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if (flags & OPT_NOCLOBBER)
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goto RET_0;
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if (!(flags & OPT_FORCE)
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&& ((access(dest, W_OK) < 0 && isatty(0))
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|| (flags & OPT_INTERACTIVE))
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) {
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if (fprintf(stderr, "mv: overwrite '%s'? ", dest) < 0) {
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goto RET_1; /* Ouch! fprintf failed! */
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}
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if (!bb_ask_confirmation()) {
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goto RET_0;
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}
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}
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}
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if (rename(*argv, dest) < 0) {
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struct stat source_stat;
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int source_exists;
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if (errno != EXDEV
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|| (source_exists = cp_mv_stat2(*argv, &source_stat, lstat)) < 1
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) {
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bb_perror_msg("can't rename '%s'", *argv);
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} else {
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static const char fmt[] ALIGN1 =
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"can't overwrite %sdirectory with %sdirectory";
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if (dest_exists) {
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if (dest_exists == 3) {
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if (source_exists != 3) {
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bb_error_msg(fmt, "", "non-");
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goto RET_1;
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}
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} else {
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if (source_exists == 3) {
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bb_error_msg(fmt, "non-", "");
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goto RET_1;
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}
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}
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if (unlink(dest) < 0) {
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bb_perror_msg("can't remove '%s'", dest);
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goto RET_1;
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}
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}
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/* FILEUTILS_RECUR also prevents nasties like
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* "read from device and write contents to dst"
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* instead of "create same device node" */
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copy_flag = FILEUTILS_RECUR | FILEUTILS_PRESERVE_STATUS;
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#if ENABLE_SELINUX
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copy_flag |= FILEUTILS_PRESERVE_SECURITY_CONTEXT;
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#endif
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if ((copy_file(*argv, dest, copy_flag) >= 0)
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&& (remove_file(*argv, FILEUTILS_RECUR | FILEUTILS_FORCE) >= 0)
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) {
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goto RET_0;
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}
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}
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RET_1:
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status = 1;
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}
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RET_0:
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if (flags & OPT_VERBOSE) {
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printf("'%s' -> '%s'\n", *argv, dest);
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}
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if (dest != last) {
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free((void *) dest);
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}
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} while (*++argv != last);
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return status;
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}
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