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 1.14 2007/06/15 07:02:51 corecode Exp $
38 #include <sys/param.h>
42 #include <sys/mount.h>
57 #include "pathnames.h"
59 #define mv_pct(x,y) (int)(100.0 * (double)(x) / (double)(y))
61 static int fflg, iflg, nflg, vflg;
62 volatile sig_atomic_t info;
64 static int copy(const char *, const char *);
65 static int do_move(const char *, const char *);
66 static int fastcopy(const char *, const char *, struct stat *);
67 static void siginfo(int);
68 static void usage(void);
71 main(int argc, char **argv)
80 while ((ch = getopt(argc, argv, "finv")) != -1)
103 signal(SIGINFO, siginfo);
109 * If the stat on the target fails or the target isn't a directory,
110 * try the move. More than 2 arguments is an error in this case.
112 if (stat(argv[argc - 1], &sb) || !S_ISDIR(sb.st_mode)) {
115 exit(do_move(argv[0], argv[1]));
118 /* It's a directory, move each file into it. */
119 if (strlen(argv[argc - 1]) > sizeof(path) - 1)
120 errx(1, "%s: destination pathname too long", *argv);
121 strcpy(path, argv[argc - 1]);
122 baselen = strlen(path);
123 endp = &path[baselen];
124 if (!baselen || *(endp - 1) != '/') {
128 for (rval = 0; --argc; ++argv) {
130 * Find the last component of the source pathname. It
131 * may have trailing slashes.
133 p = *argv + strlen(*argv);
134 while (p != *argv && p[-1] == '/')
136 while (p != *argv && p[-1] != '/')
139 if ((baselen + (len = strlen(p))) >= PATH_MAX) {
140 warnx("%s: destination pathname too long", *argv);
143 memmove(endp, p, (size_t)len + 1);
144 if (do_move(*argv, path))
152 do_move(const char *from, const char *to)
159 * Check access. If interactive and file exists, ask user if it
160 * should be replaced. Otherwise if file exists but isn't writable
161 * make sure the user wants to clobber it.
163 if (!fflg && !access(to, F_OK)) {
165 /* prompt only if source exist */
166 if (lstat(from, &sb) == -1) {
171 #define YESNO "(y/n [n]) "
175 printf("%s not overwritten\n", to);
178 fprintf(stderr, "overwrite %s? %s", to, YESNO);
180 } else if (access(to, W_OK) && !stat(to, &sb)) {
181 strmode(sb.st_mode, modep);
182 fprintf(stderr, "override %s%s%s/%s for %s? %s",
183 modep + 1, modep[9] == ' ' ? "" : " ",
184 user_from_uid((unsigned long)sb.st_uid, 0),
185 group_from_gid((unsigned long)sb.st_gid, 0), to, YESNO);
189 first = ch = getchar();
190 while (ch != '\n' && ch != EOF)
192 if (first != 'y' && first != 'Y') {
193 fprintf(stderr, "not overwritten\n");
198 if (!rename(from, to)) {
200 printf("%s -> %s\n", from, to);
204 if (errno == EXDEV) {
209 * If the source is a symbolic link and is on another
210 * filesystem, it can be recreated at the destination.
212 if (lstat(from, &sb) == -1) {
216 if (!S_ISLNK(sb.st_mode)) {
217 /* Can't mv(1) a mount point. */
218 if (realpath(from, path) == NULL) {
219 warnx("cannot resolve %s: %s", from, path);
222 if (!statfs(path, &sfs) &&
223 !strcmp(path, sfs.f_mntonname)) {
224 warnx("cannot rename a mount point");
229 warn("rename %s to %s", from, to);
234 * If rename fails because we're trying to cross devices, and
235 * it's a regular file, do the copy internally; otherwise, use
238 if (lstat(from, &sb)) {
242 return (S_ISREG(sb.st_mode) ?
243 fastcopy(from, to, &sb) : copy(from, to));
247 fastcopy(const char *from, const char *to, struct stat *sbp)
249 struct timeval tval[2];
254 size_t nread, wcount;
257 if ((from_fd = open(from, O_RDONLY, 0)) < 0) {
261 if (blen < sbp->st_blksize) {
264 if ((bp = malloc((size_t)sbp->st_blksize)) == NULL) {
266 warnx("malloc failed");
269 blen = sbp->st_blksize;
272 open(to, O_CREAT | O_EXCL | O_TRUNC | O_WRONLY, 0)) < 0) {
273 if (errno == EEXIST && unlink(to) == 0)
279 while ((ssize_t)(nread = read(from_fd, bp, (size_t)blen)) > 0) {
280 wcount = write(to_fd, bp, nread);
283 if (wcount != nread) {
290 fprintf(stderr, "%s -> %s %3d%%\n",
292 mv_pct(wtotal, sbp->st_size));
295 if ((ssize_t)nread == -1) {
298 warn("%s: remove", to);
305 oldmode = sbp->st_mode & ALLPERMS;
306 if (fchown(to_fd, sbp->st_uid, sbp->st_gid)) {
307 warn("%s: set owner/group (was: %lu/%lu)", to,
308 (u_long)sbp->st_uid, (u_long)sbp->st_gid);
309 if (oldmode & (S_ISUID | S_ISGID)) {
311 "%s: owner/group changed; clearing suid/sgid (mode was 0%03o)",
313 sbp->st_mode &= ~(S_ISUID | S_ISGID);
316 if (fchmod(to_fd, sbp->st_mode))
317 warn("%s: set mode (was: 0%03o)", to, oldmode);
320 * NFS doesn't support chflags; ignore errors unless there's reason
321 * to believe we're losing bits. (Note, this still won't be right
322 * if the server supports flags and we were trying to *remove* flags
323 * on a file that we copied, i.e., that we didn't create.)
326 if (fchflags(to_fd, (u_long)sbp->st_flags))
327 if (errno != EOPNOTSUPP || sbp->st_flags != 0)
328 warn("%s: set flags (was: 0%07o)", to, sbp->st_flags);
330 tval[0].tv_sec = sbp->st_atime;
331 tval[1].tv_sec = sbp->st_mtime;
332 tval[0].tv_usec = tval[1].tv_usec = 0;
333 if (utimes(to, tval))
334 warn("%s: set times", to);
342 warn("%s: remove", from);
346 printf("%s -> %s\n", from, to);
351 copy(const char *from, const char *to)
356 if ((pid = fork()) == 0) {
357 execl(_PATH_CP, "mv", vflg ? "-PRpv" : "-PRp", "--", from, to,
359 warn("%s", _PATH_CP);
362 if (waitpid(pid, &status, 0) == -1) {
363 warn("%s: waitpid", _PATH_CP);
366 if (!WIFEXITED(status)) {
367 warnx("%s: did not terminate normally", _PATH_CP);
370 if (WEXITSTATUS(status)) {
371 warnx("%s: terminated with %d (non-zero) status",
372 _PATH_CP, WEXITSTATUS(status));
375 if (!(pid = vfork())) {
376 execl(_PATH_RM, "mv", "-rf", "--", from, NULL);
377 warn("%s", _PATH_RM);
380 if (waitpid(pid, &status, 0) == -1) {
381 warn("%s: waitpid", _PATH_RM);
384 if (!WIFEXITED(status)) {
385 warnx("%s: did not terminate normally", _PATH_RM);
388 if (WEXITSTATUS(status)) {
389 warnx("%s: terminated with %d (non-zero) status",
390 _PATH_RM, WEXITSTATUS(status));
400 fprintf(stderr, "%s\n%s\n",
401 "usage: mv [-f | -i | -n] [-v] source target",
402 " mv [-f | -i | -n] [-v] source ... directory");
407 siginfo(int notused __unused)