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/* 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;
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, FILEUTILS_RECUR | FILEUTILS_PRESERVE_STATUS |
FILEUTILS_PRESERVE_SYMLINKS) < 0)
return -1;
if (remove_file(source, FILEUTILS_RECUR | FILEUTILS_FORCE) < 0)
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 & FILEUTILS_FORCE) &&
((access(dest, W_OK) < 0 && isatty(0)) ||
(flags & FILEUTILS_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 &= ~FILEUTILS_INTERACTIVE;
flags |= FILEUTILS_FORCE;
break;
case 'i':
flags &= ~FILEUTILS_FORCE;
flags |= FILEUTILS_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;
}
|
