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. All advertising materials mentioning features or use of this software
17 * must display the following acknowledgement:
18 * This product includes software developed by the University of
19 * California, Berkeley and its contributors.
20 * 4. Neither the name of the University nor the names of its contributors
21 * may be used to endorse or promote products derived from this software
22 * without specific prior written permission.
24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
36 * @(#) Copyright (c) 1989, 1993, 1994 The Regents of the University of California. All rights reserved.
37 * @(#)mv.c 8.2 (Berkeley) 4/2/94
38 * $FreeBSD: src/bin/mv/mv.c,v 1.24.2.5 2002/08/19 00:26:41 johan Exp $
39 * $DragonFly: src/bin/mv/mv.c,v 1.4 2003/09/28 14:39:14 hmp Exp $
42 #include <sys/param.h>
46 #include <sys/mount.h>
58 #include "pathnames.h"
60 int fflg, iflg, nflg, vflg;
62 int copy (char *, char *);
63 int do_move (char *, char *);
64 int fastcopy (char *, char *, struct stat *);
65 int main (int, char *[]);
69 main(int argc, char **argv)
71 register int baselen, len, rval;
72 register char *p, *endp;
77 while ((ch = getopt(argc, argv, "finv")) != -1)
104 * If the stat on the target fails or the target isn't a directory,
105 * try the move. More than 2 arguments is an error in this case.
107 if (stat(argv[argc - 1], &sb) || !S_ISDIR(sb.st_mode)) {
110 exit(do_move(argv[0], argv[1]));
113 /* It's a directory, move each file into it. */
114 if (strlen(argv[argc - 1]) > sizeof(path) - 1)
115 errx(1, "%s: destination pathname too long", *argv);
116 (void)strcpy(path, argv[argc - 1]);
117 baselen = strlen(path);
118 endp = &path[baselen];
119 if (!baselen || *(endp - 1) != '/') {
123 for (rval = 0; --argc; ++argv) {
125 * Find the last component of the source pathname. It
126 * may have trailing slashes.
128 p = *argv + strlen(*argv);
129 while (p != *argv && p[-1] == '/')
131 while (p != *argv && p[-1] != '/')
134 if ((baselen + (len = strlen(p))) >= PATH_MAX) {
135 warnx("%s: destination pathname too long", *argv);
138 memmove(endp, p, (size_t)len + 1);
139 if (do_move(*argv, path))
147 do_move(char *from, char *to)
154 * Check access. If interactive and file exists, ask user if it
155 * should be replaced. Otherwise if file exists but isn't writable
156 * make sure the user wants to clobber it.
158 if (!fflg && !access(to, F_OK)) {
160 /* prompt only if source exist */
161 if (lstat(from, &sb) == -1) {
166 #define YESNO "(y/n [n]) "
170 printf("%s not overwritten\n", to);
173 (void)fprintf(stderr, "overwrite %s? %s", to, YESNO);
175 } else if (access(to, W_OK) && !stat(to, &sb)) {
176 strmode(sb.st_mode, modep);
177 (void)fprintf(stderr, "override %s%s%s/%s for %s? %s",
178 modep + 1, modep[9] == ' ' ? "" : " ",
179 user_from_uid((unsigned long)sb.st_uid, 0),
180 group_from_gid((unsigned long)sb.st_gid, 0), to, YESNO);
184 first = ch = getchar();
185 while (ch != '\n' && ch != EOF)
187 if (first != 'y' && first != 'Y') {
188 (void)fprintf(stderr, "not overwritten\n");
193 if (!rename(from, to)) {
195 printf("%s -> %s\n", from, to);
199 if (errno == EXDEV) {
203 /* Can't mv(1) a mount point. */
204 if (realpath(from, path) == NULL) {
205 warnx("cannot resolve %s: %s", from, path);
208 if (!statfs(path, &sfs) && !strcmp(path, sfs.f_mntonname)) {
209 warnx("cannot rename a mount point");
213 warn("rename %s to %s", from, to);
218 * If rename fails because we're trying to cross devices, and
219 * it's a regular file, do the copy internally; otherwise, use
222 if (lstat(from, &sb)) {
226 return (S_ISREG(sb.st_mode) ?
227 fastcopy(from, to, &sb) : copy(from, to));
231 fastcopy(char *from, char *to, struct stat *sbp)
233 struct timeval tval[2];
237 register int nread, from_fd, to_fd;
239 if ((from_fd = open(from, O_RDONLY, 0)) < 0) {
243 if (blen < sbp->st_blksize) {
246 if ((bp = malloc((size_t)sbp->st_blksize)) == NULL) {
248 warnx("malloc failed");
251 blen = sbp->st_blksize;
254 open(to, O_CREAT | O_EXCL | O_TRUNC | O_WRONLY, 0)) < 0) {
255 if (errno == EEXIST && unlink(to) == 0)
258 (void)close(from_fd);
261 while ((nread = read(from_fd, bp, (size_t)blen)) > 0)
262 if (write(to_fd, bp, (size_t)nread) != nread) {
269 warn("%s: remove", to);
270 (void)close(from_fd);
274 (void)close(from_fd);
276 oldmode = sbp->st_mode & ALLPERMS;
277 if (fchown(to_fd, sbp->st_uid, sbp->st_gid)) {
278 warn("%s: set owner/group (was: %lu/%lu)", to,
279 (u_long)sbp->st_uid, (u_long)sbp->st_gid);
280 if (oldmode & (S_ISUID | S_ISGID)) {
282 "%s: owner/group changed; clearing suid/sgid (mode was 0%03o)",
284 sbp->st_mode &= ~(S_ISUID | S_ISGID);
287 if (fchmod(to_fd, sbp->st_mode))
288 warn("%s: set mode (was: 0%03o)", to, oldmode);
291 * NFS doesn't support chflags; ignore errors unless there's reason
292 * to believe we're losing bits. (Note, this still won't be right
293 * if the server supports flags and we were trying to *remove* flags
294 * on a file that we copied, i.e., that we didn't create.)
297 if (fchflags(to_fd, (u_long)sbp->st_flags))
298 if (errno != EOPNOTSUPP || sbp->st_flags != 0)
299 warn("%s: set flags (was: 0%07o)", to, sbp->st_flags);
301 tval[0].tv_sec = sbp->st_atime;
302 tval[1].tv_sec = sbp->st_mtime;
303 tval[0].tv_usec = tval[1].tv_usec = 0;
304 if (utimes(to, tval))
305 warn("%s: set times", to);
313 warn("%s: remove", from);
317 printf("%s -> %s\n", from, to);
322 copy(char *from, char *to)
326 if ((pid = fork()) == 0) {
327 execl(_PATH_CP, "mv", vflg ? "-PRpv" : "-PRp", "--", from, to,
329 warn("%s", _PATH_CP);
332 if (waitpid(pid, &status, 0) == -1) {
333 warn("%s: waitpid", _PATH_CP);
336 if (!WIFEXITED(status)) {
337 warn("%s: did not terminate normally", _PATH_CP);
340 if (WEXITSTATUS(status)) {
341 warn("%s: terminated with %d (non-zero) status",
342 _PATH_CP, WEXITSTATUS(status));
345 if (!(pid = vfork())) {
346 execl(_PATH_RM, "mv", "-rf", "--", from, (char *)NULL);
347 warn("%s", _PATH_RM);
350 if (waitpid(pid, &status, 0) == -1) {
351 warn("%s: waitpid", _PATH_RM);
354 if (!WIFEXITED(status)) {
355 warn("%s: did not terminate normally", _PATH_RM);
358 if (WEXITSTATUS(status)) {
359 warn("%s: terminated with %d (non-zero) status",
360 _PATH_RM, WEXITSTATUS(status));
370 (void)fprintf(stderr, "%s\n%s\n",
371 "usage: mv [-f | -i | -n] [-v] source target",
372 " mv [-f | -i | -n] [-v] source ... directory");