mirror of
https://github.com/topjohnwu/ndk-busybox.git
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f24e1f40e0
Add doc on POSIX's rules on -i and -f (insane!). ln: make "ln dangling_symlink new_link" work.
132 lines
2.8 KiB
C
132 lines
2.8 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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*
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* Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
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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 <sys/types.h>
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#include <sys/stat.h>
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#include <unistd.h>
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#include <dirent.h>
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#include <errno.h>
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#include <stdlib.h>
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#include <getopt.h> /* struct option */
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#include "busybox.h"
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#include "libcoreutils/coreutils.h"
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#if ENABLE_FEATURE_MV_LONG_OPTIONS
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static const struct option mv_long_options[] = {
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{ "interactive", 0, NULL, 'i' },
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{ "force", 0, NULL, 'f' },
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{ 0, 0, 0, 0 }
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};
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#endif
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#define OPT_FILEUTILS_FORCE 1
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#define OPT_FILEUTILS_INTERACTIVE 2
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static const char fmt[] = "cannot overwrite %sdirectory with %sdirectory";
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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 long flags;
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int dest_exists;
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int status = 0;
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#if ENABLE_FEATURE_MV_LONG_OPTIONS
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applet_long_options = mv_long_options;
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#endif
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opt_complementary = "f-i:i-f";
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flags = getopt32(argc, argv, "fi");
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if (optind + 2 > argc) {
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bb_show_usage();
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}
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last = argv[argc - 1];
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argv += optind;
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if (optind + 2 == argc) {
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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 1;
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}
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if (!(dest_exists & 2)) {
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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(*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 && !(flags & OPT_FILEUTILS_FORCE) &&
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((access(dest, W_OK) < 0 && isatty(0)) ||
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(flags & OPT_FILEUTILS_INTERACTIVE))) {
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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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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_stat(*argv, &source_stat)) < 1) {
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bb_perror_msg("cannot rename '%s'", *argv);
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} else {
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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("cannot remove '%s'", dest);
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goto RET_1;
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}
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}
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if ((copy_file(*argv, dest,
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FILEUTILS_RECUR | FILEUTILS_PRESERVE_STATUS) >= 0) &&
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(remove_file(*argv, FILEUTILS_RECUR | FILEUTILS_FORCE) >= 0)) {
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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 (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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