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https://github.com/sheumann/hush.git
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136 lines
3.1 KiB
C
136 lines
3.1 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 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 "libbb.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 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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;
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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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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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// -f unsets -i, -i unsets -f
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opt_complementary = "-2:f-i:i-f";
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flags = getopt32(argv, "fi");
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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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&& !(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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) {
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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_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 (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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