diff options
Diffstat (limited to 'mv.c')
| -rw-r--r-- | mv.c | 183 |
1 files changed, 183 insertions, 0 deletions
@@ -0,0 +1,183 @@ +/* vi: set sw=4 ts=4: */ +/* + * Mini mv implementation for busybox + * + * + * Copyright (C) 2000 by Matt Kraai <kraai@alumni.carnegiemellon.edu> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + */ + +#include <sys/types.h> +#include <sys/stat.h> +#include <unistd.h> +#include <dirent.h> +#include <errno.h> +#include <stdlib.h> + +#include "busybox.h" + +static int flags = CP_RECUR | CP_PRESERVE_STATUS | CP_PRESERVE_SYMLINKS; + +static int remove_file(const char *path, struct stat *statbuf, void *junk) +{ + if (unlink(path) < 0) + return FALSE; + return TRUE; +} + +static int remove_directory(const char *path, struct stat *statbuf, void *junk) +{ + if (rmdir(path) < 0) + return FALSE; + return TRUE; +} + +static int manual_rename(const char *source, const char *dest) +{ + struct stat source_stat; + struct stat dest_stat; + int source_exists = 1; + int dest_exists = 1; + + if (stat(source, &source_stat) < 0) { + if (errno != ENOENT) { + perror_msg("unable to stat `%s'", source); + return -1; + } + source_exists = 0; + } + + if (stat(dest, &dest_stat) < 0) { + if (errno != ENOENT) { + perror_msg("unable to stat `%s'", dest); + return -1; + } + dest_exists = 0; + } + + if (dest_exists) { + if (S_ISDIR(dest_stat.st_mode) && + (!source_exists || !S_ISDIR(source_stat.st_mode))) { + error_msg("cannot overwrite directory with non-directory"); + return -1; + } + + if (!S_ISDIR(dest_stat.st_mode) && source_exists && + S_ISDIR(source_stat.st_mode)) { + error_msg("cannot overwrite non-directory with directory"); + return -1; + } + + if (unlink(dest) < 0) { + perror_msg("cannot remove `%s'", dest); + return -1; + } + } + + if (copy_file(source, dest, + CP_RECUR | CP_PRESERVE_STATUS | CP_PRESERVE_SYMLINKS) < 0) + return -1; + + if (!recursive_action(source, TRUE, FALSE, TRUE, remove_file, + remove_directory, NULL)) + return -1; + + return 0; +} + +static int move_file(const char *source, const char *dest) +{ + struct stat dest_stat; + int dest_exists = 1; + + if (stat(dest, &dest_stat) < 0) { + if (errno != ENOENT) { + perror_msg("unable to stat `%s'", dest); + return -1; + } + dest_exists = 0; + } + + if (dest_exists && !(flags & CP_FORCE) && + ((access(dest, W_OK) < 0 && isatty(0)) || + (flags & CP_INTERACTIVE))) { + fprintf(stderr, "mv: overwrite `%s'? ", dest); + if (!ask_confirmation()) + return 0; + } + + if (rename(source, dest) < 0) { + if (errno == EXDEV) + return manual_rename(source, dest); + + perror_msg("unable to rename `%s'", source); + return -1; + } + + return 0; +} + +extern int mv_main(int argc, char **argv) +{ + int status = 0; + int opt; + int i; + + while ((opt = getopt(argc, argv, "fi")) != -1) + switch (opt) { + case 'f': + flags &= ~CP_INTERACTIVE; + flags |= CP_FORCE; + break; + case 'i': + flags &= ~CP_FORCE; + flags |= CP_INTERACTIVE; + break; + default: + show_usage(); + } + + if (optind + 2 > argc) + show_usage(); + + if (optind + 2 == argc) { + struct stat dest_stat; + int dest_exists = 1; + + if (stat(argv[optind + 1], &dest_stat) < 0) { + if (errno != ENOENT) + perror_msg_and_die("unable to stat `%s'", argv[optind + 1]); + dest_exists = 0; + } + + if (!dest_exists || !S_ISDIR(dest_stat.st_mode)) { + if (move_file(argv[optind], argv[optind + 1]) < 0) + status = 1; + return status; + } + } + + for (i = optind; i < argc - 1; i++) { + char *dest = concat_path_file(argv[argc - 1], + get_last_path_component(argv[i])); + if (move_file(argv[i], dest) < 0) + status = 1; + free(dest); + } + + return status; +} |