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 * 4. 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
35 static char const copyright[] =
36 "@(#) Copyright (c) 1989, 1993, 1994\n\
37 The Regents of the University of California. All rights reserved.\n";
41 static char sccsid[] = "@(#)mv.c 8.2 (Berkeley) 4/2/94";
44 #include <sys/cdefs.h>
45 __FBSDID("$FreeBSD$");
47 #include <sys/param.h>
51 #include <sys/mount.h>
66 int fflg, iflg, nflg, vflg;
68 int copy(char *, char *);
69 int do_move(char *, char *);
70 int fastcopy(char *, char *, struct stat *);
74 main(int argc, char *argv[])
83 while ((ch = getopt(argc, argv, "finv")) != -1)
110 * If the stat on the target fails or the target isn't a directory,
111 * try the move. More than 2 arguments is an error in this case.
113 if (stat(argv[argc - 1], &sb) || !S_ISDIR(sb.st_mode)) {
116 exit(do_move(argv[0], argv[1]));
119 /* It's a directory, move each file into it. */
120 if (strlen(argv[argc - 1]) > sizeof(path) - 1)
121 errx(1, "%s: destination pathname too long", *argv);
122 (void)strcpy(path, argv[argc - 1]);
123 baselen = strlen(path);
124 endp = &path[baselen];
125 if (!baselen || *(endp - 1) != '/') {
129 for (rval = 0; --argc; ++argv) {
131 * Find the last component of the source pathname. It
132 * may have trailing slashes.
134 p = *argv + strlen(*argv);
135 while (p != *argv && p[-1] == '/')
137 while (p != *argv && p[-1] != '/')
140 if ((baselen + (len = strlen(p))) >= PATH_MAX) {
141 warnx("%s: destination pathname too long", *argv);
144 memmove(endp, p, (size_t)len + 1);
145 if (do_move(*argv, path))
153 do_move(char *from, char *to)
160 * Check access. If interactive and file exists, ask user if it
161 * should be replaced. Otherwise if file exists but isn't writable
162 * make sure the user wants to clobber it.
164 if (!fflg && !access(to, F_OK)) {
166 /* prompt only if source exist */
167 if (lstat(from, &sb) == -1) {
172 #define YESNO "(y/n [n]) "
176 printf("%s not overwritten\n", to);
179 (void)fprintf(stderr, "overwrite %s? %s", to, YESNO);
181 } else if (access(to, W_OK) && !stat(to, &sb)) {
182 strmode(sb.st_mode, modep);
183 (void)fprintf(stderr, "override %s%s%s/%s for %s? %s",
184 modep + 1, modep[9] == ' ' ? "" : " ",
185 user_from_uid((unsigned long)sb.st_uid, 0),
186 group_from_gid((unsigned long)sb.st_gid, 0), to, YESNO);
190 first = ch = getchar();
191 while (ch != '\n' && ch != EOF)
193 if (first != 'y' && first != 'Y') {
194 (void)fprintf(stderr, "not overwritten\n");
199 if (!rename(from, to)) {
201 printf("%s -> %s\n", from, to);
205 if (errno == EXDEV) {
210 * If the source is a symbolic link and is on another
211 * filesystem, it can be recreated at the destination.
213 if (lstat(from, &sb) == -1) {
217 if (!S_ISLNK(sb.st_mode)) {
218 /* Can't mv(1) a mount point. */
219 if (realpath(from, path) == NULL) {
220 warnx("cannot resolve %s: %s", from, path);
223 if (!statfs(path, &sfs) &&
224 !strcmp(path, sfs.f_mntonname)) {
225 warnx("cannot rename a mount point");
230 warn("rename %s to %s", from, to);
235 * If rename fails because we're trying to cross devices, and
236 * it's a regular file, do the copy internally; otherwise, use
239 if (lstat(from, &sb)) {
243 return (S_ISREG(sb.st_mode) ?
244 fastcopy(from, to, &sb) : copy(from, to));
248 fastcopy(char *from, char *to, struct stat *sbp)
250 struct timeval tval[2];
254 int nread, from_fd, to_fd;
256 if ((from_fd = open(from, O_RDONLY, 0)) < 0) {
260 if (blen < sbp->st_blksize) {
263 if ((bp = malloc((size_t)sbp->st_blksize)) == NULL) {
265 warnx("malloc failed");
268 blen = sbp->st_blksize;
271 open(to, O_CREAT | O_EXCL | O_TRUNC | O_WRONLY, 0)) < 0) {
272 if (errno == EEXIST && unlink(to) == 0)
275 (void)close(from_fd);
278 while ((nread = read(from_fd, bp, (size_t)blen)) > 0)
279 if (write(to_fd, bp, (size_t)nread) != nread) {
286 warn("%s: remove", to);
287 (void)close(from_fd);
291 (void)close(from_fd);
293 oldmode = sbp->st_mode & ALLPERMS;
294 if (fchown(to_fd, sbp->st_uid, sbp->st_gid)) {
295 warn("%s: set owner/group (was: %lu/%lu)", to,
296 (u_long)sbp->st_uid, (u_long)sbp->st_gid);
297 if (oldmode & (S_ISUID | S_ISGID)) {
299 "%s: owner/group changed; clearing suid/sgid (mode was 0%03o)",
301 sbp->st_mode &= ~(S_ISUID | S_ISGID);
304 if (fchmod(to_fd, sbp->st_mode))
305 warn("%s: set mode (was: 0%03o)", to, oldmode);
308 * NFS doesn't support chflags; ignore errors unless there's reason
309 * to believe we're losing bits. (Note, this still won't be right
310 * if the server supports flags and we were trying to *remove* flags
311 * on a file that we copied, i.e., that we didn't create.)
314 if (fchflags(to_fd, (u_long)sbp->st_flags))
315 if (errno != EOPNOTSUPP || sbp->st_flags != 0)
316 warn("%s: set flags (was: 0%07o)", to, sbp->st_flags);
318 tval[0].tv_sec = sbp->st_atime;
319 tval[1].tv_sec = sbp->st_mtime;
320 tval[0].tv_usec = tval[1].tv_usec = 0;
321 if (utimes(to, tval))
322 warn("%s: set times", to);
330 warn("%s: remove", from);
334 printf("%s -> %s\n", from, to);
339 copy(char *from, char *to)
343 if ((pid = fork()) == 0) {
344 execl(_PATH_CP, "mv", vflg ? "-PRpv" : "-PRp", "--", from, to,
346 warn("%s", _PATH_CP);
349 if (waitpid(pid, &status, 0) == -1) {
350 warn("%s: waitpid", _PATH_CP);
353 if (!WIFEXITED(status)) {
354 warnx("%s: did not terminate normally", _PATH_CP);
357 if (WEXITSTATUS(status)) {
358 warnx("%s: terminated with %d (non-zero) status",
359 _PATH_CP, WEXITSTATUS(status));
362 if (!(pid = vfork())) {
363 execl(_PATH_RM, "mv", "-rf", "--", from, (char *)NULL);
364 warn("%s", _PATH_RM);
367 if (waitpid(pid, &status, 0) == -1) {
368 warn("%s: waitpid", _PATH_RM);
371 if (!WIFEXITED(status)) {
372 warnx("%s: did not terminate normally", _PATH_RM);
375 if (WEXITSTATUS(status)) {
376 warnx("%s: terminated with %d (non-zero) status",
377 _PATH_RM, WEXITSTATUS(status));
387 (void)fprintf(stderr, "%s\n%s\n",
388 "usage: mv [-f | -i | -n] [-v] source target",
389 " mv [-f | -i | -n] [-v] source ... directory");