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169 lines
3.7 KiB
C
169 lines
3.7 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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*
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* Copyright (C) 2000 by Matt Kraai <kraai@alumni.carnegiemellon.edu>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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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 "busybox.h"
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static int flags;
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static int manual_rename(const char *source, const char *dest)
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{
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struct stat source_stat;
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struct stat dest_stat;
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int source_exists = 1;
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int dest_exists = 1;
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if (stat(source, &source_stat) < 0) {
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if (errno != ENOENT) {
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perror_msg("unable to stat `%s'", source);
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return -1;
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}
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source_exists = 0;
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}
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if (stat(dest, &dest_stat) < 0) {
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if (errno != ENOENT) {
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perror_msg("unable to stat `%s'", dest);
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return -1;
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}
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dest_exists = 0;
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}
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if (dest_exists) {
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if (S_ISDIR(dest_stat.st_mode) &&
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(!source_exists || !S_ISDIR(source_stat.st_mode))) {
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error_msg("cannot overwrite directory with non-directory");
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return -1;
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}
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if (!S_ISDIR(dest_stat.st_mode) && source_exists &&
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S_ISDIR(source_stat.st_mode)) {
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error_msg("cannot overwrite non-directory with directory");
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return -1;
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}
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if (unlink(dest) < 0) {
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perror_msg("cannot remove `%s'", dest);
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return -1;
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}
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}
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if (copy_file(source, dest, FILEUTILS_RECUR | FILEUTILS_PRESERVE_STATUS |
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FILEUTILS_PRESERVE_SYMLINKS) < 0)
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return -1;
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if (remove_file(source, FILEUTILS_RECUR | FILEUTILS_FORCE) < 0)
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return -1;
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return 0;
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}
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static int move_file(const char *source, const char *dest)
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{
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struct stat dest_stat;
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int dest_exists = 1;
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if (stat(dest, &dest_stat) < 0) {
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if (errno != ENOENT) {
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perror_msg("unable to stat `%s'", dest);
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return -1;
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}
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dest_exists = 0;
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}
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if (dest_exists && !(flags & FILEUTILS_FORCE) &&
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((access(dest, W_OK) < 0 && isatty(0)) ||
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(flags & FILEUTILS_INTERACTIVE))) {
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fprintf(stderr, "mv: overwrite `%s'? ", dest);
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if (!ask_confirmation())
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return 0;
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}
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if (rename(source, dest) < 0) {
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if (errno == EXDEV)
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return manual_rename(source, dest);
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perror_msg("unable to rename `%s'", source);
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return -1;
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}
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return 0;
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}
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extern int mv_main(int argc, char **argv)
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{
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int status = 0;
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int opt;
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int i;
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while ((opt = getopt(argc, argv, "fi")) != -1)
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switch (opt) {
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case 'f':
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flags &= ~FILEUTILS_INTERACTIVE;
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flags |= FILEUTILS_FORCE;
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break;
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case 'i':
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flags &= ~FILEUTILS_FORCE;
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flags |= FILEUTILS_INTERACTIVE;
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break;
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default:
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show_usage();
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}
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if (optind + 2 > argc)
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show_usage();
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if (optind + 2 == argc) {
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struct stat dest_stat;
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int dest_exists = 1;
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if (stat(argv[optind + 1], &dest_stat) < 0) {
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if (errno != ENOENT)
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perror_msg_and_die("unable to stat `%s'", argv[optind + 1]);
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dest_exists = 0;
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}
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if (!dest_exists || !S_ISDIR(dest_stat.st_mode)) {
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if (move_file(argv[optind], argv[optind + 1]) < 0)
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status = 1;
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return status;
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}
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}
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for (i = optind; i < argc - 1; i++) {
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char *dest = concat_path_file(argv[argc - 1],
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get_last_path_component(argv[i]));
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if (move_file(argv[i], dest) < 0)
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status = 1;
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free(dest);
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}
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return status;
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}
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