2 * Copyright (c) 1989, 1993, 1994
3 * The Regents of the University of California. All rights reserved.
5 * This code is derived from software contributed to Berkeley by
6 * Ken Smith of The State University of New York at Buffalo.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. Neither the name of the University nor the names of its contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * @(#) Copyright (c) 1989, 1993, 1994 The Regents of the University of California. All rights reserved.
33 * @(#)mv.c 8.2 (Berkeley) 4/2/94
34 * $FreeBSD: /usr/local/www/cvsroot/FreeBSD/src/bin/mv/mv.c,v 1.24.2.6 2004/03/24 08:34:36 pjd Exp $
35 * $DragonFly: src/bin/mv/mv.c,v 1.8 2004/11/07 20:54:51 eirikn Exp $
38 #include <sys/param.h>
42 #include <sys/mount.h>
54 #include "pathnames.h"
56 int fflg, iflg, nflg, vflg;
58 int copy (char *, char *);
59 int do_move (char *, char *);
60 int fastcopy (char *, char *, struct stat *);
61 int main (int, char *[]);
65 main(int argc, char **argv)
67 int baselen, len, rval;
73 while ((ch = getopt(argc, argv, "finv")) != -1)
100 * If the stat on the target fails or the target isn't a directory,
101 * try the move. More than 2 arguments is an error in this case.
103 if (stat(argv[argc - 1], &sb) || !S_ISDIR(sb.st_mode)) {
106 exit(do_move(argv[0], argv[1]));
109 /* It's a directory, move each file into it. */
110 if (strlen(argv[argc - 1]) > sizeof(path) - 1)
111 errx(1, "%s: destination pathname too long", *argv);
112 strcpy(path, argv[argc - 1]);
113 baselen = strlen(path);
114 endp = &path[baselen];
115 if (!baselen || *(endp - 1) != '/') {
119 for (rval = 0; --argc; ++argv) {
121 * Find the last component of the source pathname. It
122 * may have trailing slashes.
124 p = *argv + strlen(*argv);
125 while (p != *argv && p[-1] == '/')
127 while (p != *argv && p[-1] != '/')
130 if ((baselen + (len = strlen(p))) >= PATH_MAX) {
131 warnx("%s: destination pathname too long", *argv);
134 memmove(endp, p, (size_t)len + 1);
135 if (do_move(*argv, path))
143 do_move(char *from, char *to)
150 * Check access. If interactive and file exists, ask user if it
151 * should be replaced. Otherwise if file exists but isn't writable
152 * make sure the user wants to clobber it.
154 if (!fflg && !access(to, F_OK)) {
156 /* prompt only if source exist */
157 if (lstat(from, &sb) == -1) {
162 #define YESNO "(y/n [n]) "
166 printf("%s not overwritten\n", to);
169 fprintf(stderr, "overwrite %s? %s", to, YESNO);
171 } else if (access(to, W_OK) && !stat(to, &sb)) {
172 strmode(sb.st_mode, modep);
173 fprintf(stderr, "override %s%s%s/%s for %s? %s",
174 modep + 1, modep[9] == ' ' ? "" : " ",
175 user_from_uid((unsigned long)sb.st_uid, 0),
176 group_from_gid((unsigned long)sb.st_gid, 0), to, YESNO);
180 first = ch = getchar();
181 while (ch != '\n' && ch != EOF)
183 if (first != 'y' && first != 'Y') {
184 fprintf(stderr, "not overwritten\n");
189 if (!rename(from, to)) {
191 printf("%s -> %s\n", from, to);
195 if (errno == EXDEV) {
200 * If the source is a symbolic link and is on another
201 * filesystem, it can be recreated at the destination.
203 if (lstat(from, &sb) == -1) {
207 if (!S_ISLNK(sb.st_mode)) {
208 /* Can't mv(1) a mount point. */
209 if (realpath(from, path) == NULL) {
210 warnx("cannot resolve %s: %s", from, path);
213 if (!statfs(path, &sfs) &&
214 !strcmp(path, sfs.f_mntonname)) {
215 warnx("cannot rename a mount point");
220 warn("rename %s to %s", from, to);
225 * If rename fails because we're trying to cross devices, and
226 * it's a regular file, do the copy internally; otherwise, use
229 if (lstat(from, &sb)) {
233 return (S_ISREG(sb.st_mode) ?
234 fastcopy(from, to, &sb) : copy(from, to));
238 fastcopy(char *from, char *to, struct stat *sbp)
240 struct timeval tval[2];
244 int nread, from_fd, to_fd;
246 if ((from_fd = open(from, O_RDONLY, 0)) < 0) {
250 if (blen < sbp->st_blksize) {
253 if ((bp = malloc((size_t)sbp->st_blksize)) == NULL) {
255 warnx("malloc failed");
258 blen = sbp->st_blksize;
261 open(to, O_CREAT | O_EXCL | O_TRUNC | O_WRONLY, 0)) < 0) {
262 if (errno == EEXIST && unlink(to) == 0)
268 while ((nread = read(from_fd, bp, (size_t)blen)) > 0)
269 if (write(to_fd, bp, (size_t)nread) != nread) {
276 warn("%s: remove", to);
283 oldmode = sbp->st_mode & ALLPERMS;
284 if (fchown(to_fd, sbp->st_uid, sbp->st_gid)) {
285 warn("%s: set owner/group (was: %lu/%lu)", to,
286 (u_long)sbp->st_uid, (u_long)sbp->st_gid);
287 if (oldmode & (S_ISUID | S_ISGID)) {
289 "%s: owner/group changed; clearing suid/sgid (mode was 0%03o)",
291 sbp->st_mode &= ~(S_ISUID | S_ISGID);
294 if (fchmod(to_fd, sbp->st_mode))
295 warn("%s: set mode (was: 0%03o)", to, oldmode);
298 * NFS doesn't support chflags; ignore errors unless there's reason
299 * to believe we're losing bits. (Note, this still won't be right
300 * if the server supports flags and we were trying to *remove* flags
301 * on a file that we copied, i.e., that we didn't create.)
304 if (fchflags(to_fd, (u_long)sbp->st_flags))
305 if (errno != EOPNOTSUPP || sbp->st_flags != 0)
306 warn("%s: set flags (was: 0%07o)", to, sbp->st_flags);
308 tval[0].tv_sec = sbp->st_atime;
309 tval[1].tv_sec = sbp->st_mtime;
310 tval[0].tv_usec = tval[1].tv_usec = 0;
311 if (utimes(to, tval))
312 warn("%s: set times", to);
320 warn("%s: remove", from);
324 printf("%s -> %s\n", from, to);
329 copy(char *from, char *to)
333 if ((pid = fork()) == 0) {
334 execl(_PATH_CP, "mv", vflg ? "-PRpv" : "-PRp", "--", from, to,
336 warn("%s", _PATH_CP);
339 if (waitpid(pid, &status, 0) == -1) {
340 warn("%s: waitpid", _PATH_CP);
343 if (!WIFEXITED(status)) {
344 warn("%s: did not terminate normally", _PATH_CP);
347 if (WEXITSTATUS(status)) {
348 warn("%s: terminated with %d (non-zero) status",
349 _PATH_CP, WEXITSTATUS(status));
352 if (!(pid = vfork())) {
353 execl(_PATH_RM, "mv", "-rf", "--", from, (char *)NULL);
354 warn("%s", _PATH_RM);
357 if (waitpid(pid, &status, 0) == -1) {
358 warn("%s: waitpid", _PATH_RM);
361 if (!WIFEXITED(status)) {
362 warn("%s: did not terminate normally", _PATH_RM);
365 if (WEXITSTATUS(status)) {
366 warn("%s: terminated with %d (non-zero) status",
367 _PATH_RM, WEXITSTATUS(status));
377 fprintf(stderr, "%s\n%s\n",
378 "usage: mv [-f | -i | -n] [-v] source target",
379 " mv [-f | -i | -n] [-v] source ... directory");