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
33 #include <sys/param.h>
37 #include <sys/mount.h>
53 /* Exit code for a failed exec. */
54 #define EXEC_FAILED 127
56 static int fflg, hflg, iflg, nflg, vflg;
57 volatile sig_atomic_t info;
59 static int copy(const char *, const char *);
60 static int do_move(const char *, const char *);
61 static int fastcopy(const char *, const char *, struct stat *);
62 static void usage(void);
63 static void siginfo(int);
66 main(int argc, char *argv[])
75 while ((ch = getopt(argc, argv, "fhinv")) != -1)
101 signal(SIGINFO, siginfo);
107 * If the stat on the target fails or the target isn't a directory,
108 * try the move. More than 2 arguments is an error in this case.
110 if (stat(argv[argc - 1], &sb) || !S_ISDIR(sb.st_mode)) {
113 exit(do_move(argv[0], argv[1]));
117 * If -h was specified, treat the target as a symlink instead of
123 if (lstat(argv[1], &sb) == 0 && S_ISLNK(sb.st_mode))
124 exit(do_move(argv[0], argv[1]));
127 /* It's a directory, move each file into it. */
128 if (strlen(argv[argc - 1]) > sizeof(path) - 1)
129 errx(1, "%s: destination pathname too long", *argv);
130 (void)strcpy(path, argv[argc - 1]);
131 baselen = strlen(path);
132 endp = &path[baselen];
133 if (!baselen || *(endp - 1) != '/') {
137 for (rval = 0; --argc; ++argv) {
139 * Find the last component of the source pathname. It
140 * may have trailing slashes.
142 p = *argv + strlen(*argv);
143 while (p != *argv && p[-1] == '/')
145 while (p != *argv && p[-1] != '/')
148 if ((baselen + (len = strlen(p))) >= PATH_MAX) {
149 warnx("%s: destination pathname too long", *argv);
152 memmove(endp, p, (size_t)len + 1);
153 if (do_move(*argv, path))
161 do_move(const char *from, const char *to)
168 * Check access. If interactive and file exists, ask user if it
169 * should be replaced. Otherwise if file exists but isn't writable
170 * make sure the user wants to clobber it.
172 if (!fflg && !access(to, F_OK)) {
174 /* prompt only if source exist */
175 if (lstat(from, &sb) == -1) {
180 #define YESNO "(y/n [n]) "
184 printf("%s not overwritten\n", to);
187 (void)fprintf(stderr, "overwrite %s? %s", to, YESNO);
189 } else if (access(to, W_OK) && !stat(to, &sb) && isatty(STDIN_FILENO)) {
190 strmode(sb.st_mode, modep);
191 (void)fprintf(stderr, "override %s%s%s/%s for %s? %s",
192 modep + 1, modep[9] == ' ' ? "" : " ",
193 user_from_uid((unsigned long)sb.st_uid, 0),
194 group_from_gid((unsigned long)sb.st_gid, 0), to, YESNO);
198 first = ch = getchar();
199 while (ch != '\n' && ch != EOF)
201 if (first != 'y' && first != 'Y') {
202 (void)fprintf(stderr, "not overwritten\n");
208 * Rename on FreeBSD will fail with EISDIR and ENOTDIR, before failing
209 * with EXDEV. Therefore, copy() doesn't have to perform the checks
210 * specified in the Step 3 of the POSIX mv specification.
212 if (!rename(from, to)) {
214 printf("%s -> %s\n", from, to);
218 if (errno == EXDEV) {
221 int target_is_file = 0;
223 if (!lstat(to, &sb) && S_ISREG(sb.st_mode))
226 * If the source is a symbolic link and is on another
227 * filesystem, it can be recreated at the destination.
229 if (lstat(from, &sb) == -1) {
233 /* Can't mv(1) directory into a file ever. */
234 if (target_is_file && S_ISDIR(sb.st_mode)) {
235 warn("cannot overwrite %s with directory", to);
238 if (!S_ISLNK(sb.st_mode)) {
239 /* Can't mv(1) a mount point. */
240 if (realpath(from, path) == NULL) {
241 warn("cannot resolve %s: %s", from, path);
244 if (!statfs(path, &sfs) &&
245 !strcmp(path, sfs.f_mntonname)) {
246 warnx("cannot rename a mount point");
251 warn("rename %s to %s", from, to);
256 * If rename fails because we're trying to cross devices, and
257 * it's a regular file, do the copy internally; otherwise, use
260 if (lstat(from, &sb)) {
264 return (S_ISREG(sb.st_mode) ?
265 fastcopy(from, to, &sb) : copy(from, to));
269 fastcopy(const char *from, const char *to, struct stat *sbp)
271 struct timeval tval[2];
272 static u_int blen = MAXPHYS;
273 static char *bp = NULL;
278 if ((from_fd = open(from, O_RDONLY, 0)) < 0) {
279 warn("fastcopy: open() failed (from): %s", from);
282 if (bp == NULL && (bp = malloc((size_t)blen)) == NULL) {
283 warnx("malloc(%u) failed", blen);
287 open(to, O_CREAT | O_EXCL | O_TRUNC | O_WRONLY, 0)) < 0) {
288 if (errno == EEXIST && unlink(to) == 0)
290 warn("fastcopy: open() failed (to): %s", to);
291 (void)close(from_fd);
294 while ((nread = read(from_fd, bp, (size_t)blen)) > 0)
295 if (write(to_fd, bp, (size_t)nread) != nread) {
296 warn("fastcopy: write() failed: %s", to);
300 warn("fastcopy: read() failed: %s", from);
302 warn("%s: remove", to);
303 (void)close(from_fd);
308 oldmode = sbp->st_mode & ALLPERMS;
309 if (fchown(to_fd, sbp->st_uid, sbp->st_gid)) {
310 warn("%s: set owner/group (was: %lu/%lu)", to,
311 (u_long)sbp->st_uid, (u_long)sbp->st_gid);
312 if (oldmode & (S_ISUID | S_ISGID)) {
314 "%s: owner/group changed; clearing suid/sgid (mode was 0%03o)",
316 sbp->st_mode &= ~(S_ISUID | S_ISGID);
319 if (fchmod(to_fd, sbp->st_mode))
320 warn("%s: set mode (was: 0%03o)", to, oldmode);
322 (void)close(from_fd);
325 * NFS doesn't support chflags; ignore errors unless there's reason
326 * to believe we're losing bits. (Note, this still won't be right
327 * if the server supports flags and we were trying to *remove* flags
328 * on a file that we copied, i.e., that we didn't create.)
331 if (fchflags(to_fd, (u_long)sbp->st_flags))
332 if (errno != EOPNOTSUPP || sbp->st_flags != 0)
333 warn("%s: set flags (was: 0%07o)", to, sbp->st_flags);
335 tval[0].tv_sec = sbp->st_atime;
336 tval[1].tv_sec = sbp->st_mtime;
337 tval[0].tv_usec = tval[1].tv_usec = 0;
338 if (utimes(to, tval))
339 warn("%s: set times", to);
347 warn("%s: remove", from);
351 printf("%s -> %s\n", from, to);
356 copy(const char *from, const char *to)
361 if (lstat(to, &sb) == 0) {
362 /* Destination path exists. */
363 if (S_ISDIR(sb.st_mode)) {
364 if (rmdir(to) != 0) {
365 warn("rmdir %s", to);
369 if (unlink(to) != 0) {
370 warn("unlink %s", to);
374 } else if (errno != ENOENT) {
379 /* Copy source to destination. */
380 if (!(pid = vfork())) {
381 execl(_PATH_CP, "mv", vflg ? "-PRpv" : "-PRp", "--", from, to,
385 if (waitpid(pid, &status, 0) == -1) {
386 warn("%s %s %s: waitpid", _PATH_CP, from, to);
389 if (!WIFEXITED(status)) {
390 warnx("%s %s %s: did not terminate normally",
394 switch (WEXITSTATUS(status)) {
398 warnx("%s %s %s: exec failed", _PATH_CP, from, to);
401 warnx("%s %s %s: terminated with %d (non-zero) status",
402 _PATH_CP, from, to, WEXITSTATUS(status));
406 /* Delete the source. */
407 if (!(pid = vfork())) {
408 execl(_PATH_RM, "mv", "-rf", "--", from, (char *)NULL);
411 if (waitpid(pid, &status, 0) == -1) {
412 warn("%s %s: waitpid", _PATH_RM, from);
415 if (!WIFEXITED(status)) {
416 warnx("%s %s: did not terminate normally", _PATH_RM, from);
419 switch (WEXITSTATUS(status)) {
423 warnx("%s %s: exec failed", _PATH_RM, from);
426 warnx("%s %s: terminated with %d (non-zero) status",
427 _PATH_RM, from, WEXITSTATUS(status));
437 (void)fprintf(stderr, "%s\n%s\n",
438 "usage: mv [-f | -i | -n] [-hv] source target",
439 " mv [-f | -i | -n] [-v] source ... directory");
444 siginfo(int notused __unused)