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
, (char *)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
)