#ifndef lint
static char const copyright[] =
"@(#) Copyright (c) 1989, 1993, 1994\n\
The Regents of the University of California. All rights reserved.\n";
#endif
#ifndef lint
#if 0
static char sccsid[] = "@(#)mv.c 8.2 (Berkeley) 4/2/94";
#endif
#endif
#include <sys/cdefs.h>
__RCSID("$FreeBSD: src/bin/mv/mv.c,v 1.39 2002/07/09 17:45:13 johan Exp $");
#include <sys/param.h>
#include <sys/time.h>
#include <sys/wait.h>
#include <sys/stat.h>
#include <sys/mount.h>
#include <err.h>
#include <errno.h>
#include <fcntl.h>
#include <grp.h>
#include <limits.h>
#include <paths.h>
#include <pwd.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sysexits.h>
#include <unistd.h>
#ifdef __APPLE__
#include <copyfile.h>
#endif
#include "pathnames.h"
int fflg, iflg, nflg, vflg;
int copy(char *, char *);
int do_move(char *, char *);
int fastcopy(char *, char *, struct stat *);
void usage(void);
int
main(int argc, char *argv[])
{
size_t baselen, len;
int rval;
char *p, *endp;
struct stat sb;
#ifdef __APPLE__
struct stat fsb, tsb;
#endif
int ch;
char path[PATH_MAX];
while ((ch = getopt(argc, argv, "finv")) != -1)
switch (ch) {
case 'i':
iflg = 1;
fflg = nflg = 0;
break;
case 'f':
fflg = 1;
iflg = nflg = 0;
break;
case 'n':
nflg = 1;
fflg = iflg = 0;
break;
case 'v':
vflg = 1;
break;
default:
usage();
}
argc -= optind;
argv += optind;
if (argc < 2)
usage();
if (stat(argv[argc - 1], &sb) || !S_ISDIR(sb.st_mode)) {
if (argc > 2)
usage();
exit(do_move(argv[0], argv[1]));
}
#ifdef __APPLE__
if (argc == 2 && !lstat(argv[0], &fsb) && !lstat(argv[1], &tsb) &&
fsb.st_ino == tsb.st_ino && fsb.st_dev == tsb.st_dev &&
fsb.st_gen == tsb.st_gen) {
char *q;
for (p = argv[0] + strlen(argv[0]); p != argv[0]; ) {
p--;
if (*p != '/')
break;
}
for (q = argv[1] + strlen(argv[1]); q != argv[1]; ) {
q--;
if (*q != '/')
break;
}
for ( ; ; p--, q--) {
if (*p != *q)
exit(do_move(argv[0], argv[1]));
if (*p == '/')
break;
if (p == argv[0]) {
if (q == argv[1] || *(q-1) == '/')
break;
exit(do_move(argv[0], argv[1]));
}
if (q == argv[1]) {
if (p == argv[0] || *(p-1) == '/')
break;
exit(do_move(argv[0], argv[1]));
}
}
}
#endif
if (strlen(argv[argc - 1]) > sizeof(path) - 1)
errx(1, "%s: destination pathname too long", *argv);
(void)strcpy(path, argv[argc - 1]);
baselen = strlen(path);
endp = &path[baselen];
if (!baselen || *(endp - 1) != '/') {
*endp++ = '/';
++baselen;
}
for (rval = 0; --argc; ++argv) {
p = *argv + strlen(*argv);
while (p != *argv && p[-1] == '/')
--p;
while (p != *argv && p[-1] != '/')
--p;
if ((baselen + (len = strlen(p))) >= PATH_MAX) {
warnx("%s: destination pathname too long", *argv);
rval = 1;
} else {
memmove(endp, p, (size_t)len + 1);
if (do_move(*argv, path))
rval = 1;
}
}
exit(rval);
}
int
do_move(char *from, char *to)
{
struct stat sb;
int ask, ch, first;
char modep[15];
if (!fflg && !access(to, F_OK)) {
if (lstat(from, &sb) == -1) {
warn("%s", from);
return (1);
}
#define YESNO "(y/n [n]) "
ask = 0;
if (nflg) {
if (vflg)
printf("%s not overwritten\n", to);
return (0);
} else if (iflg) {
(void)fprintf(stderr, "overwrite %s? %s", to, YESNO);
ask = 1;
} else if (access(to, W_OK) && !stat(to, &sb)) {
strmode(sb.st_mode, modep);
(void)fprintf(stderr, "override %s%s%s/%s for %s? %s",
modep + 1, modep[9] == ' ' ? "" : " ",
user_from_uid((unsigned long)sb.st_uid, 0),
group_from_gid((unsigned long)sb.st_gid, 0), to, YESNO);
ask = 1;
}
if (ask) {
first = ch = getchar();
while (ch != '\n' && ch != EOF)
ch = getchar();
if (first != 'y' && first != 'Y') {
(void)fprintf(stderr, "not overwritten\n");
return (0);
}
}
}
if (!rename(from, to)) {
if (vflg)
printf("%s -> %s\n", from, to);
return (0);
}
if (errno == EXDEV) {
struct statfs sfs;
char path[PATH_MAX];
if (realpath(from, path) == NULL) {
warnx("cannot resolve %s: %s", from, path);
return (1);
}
if (!statfs(path, &sfs) && !strcmp(path, sfs.f_mntonname)) {
warnx("cannot rename a mount point");
return (1);
}
} else {
warn("rename %s to %s", from, to);
return (1);
}
if (lstat(from, &sb)) {
warn("%s", from);
return (1);
}
return (S_ISREG(sb.st_mode) ?
fastcopy(from, to, &sb) : copy(from, to));
}
int
fastcopy(char *from, char *to, struct stat *sbp)
{
struct timeval tval[2];
static u_int blen;
static char *bp;
mode_t oldmode;
int nread, from_fd, to_fd;
if ((from_fd = open(from, O_RDONLY, 0)) < 0) {
warn("%s", from);
return (1);
}
if (blen < sbp->st_blksize) {
if (bp != NULL)
free(bp);
if ((bp = malloc((size_t)sbp->st_blksize)) == NULL) {
blen = 0;
warnx("malloc failed");
return (1);
}
blen = sbp->st_blksize;
}
while ((to_fd =
open(to, O_CREAT | O_EXCL | O_TRUNC | O_WRONLY, 0)) < 0) {
if (errno == EEXIST && unlink(to) == 0)
continue;
warn("%s", to);
(void)close(from_fd);
return (1);
}
while ((nread = read(from_fd, bp, (size_t)blen)) > 0)
if (write(to_fd, bp, (size_t)nread) != nread) {
warn("%s", to);
goto err;
}
if (nread < 0) {
warn("%s", from);
err: if (unlink(to))
warn("%s: remove", to);
(void)close(from_fd);
(void)close(to_fd);
return (1);
}
#ifdef __APPLE__
copyfile(from, to, 0, COPYFILE_ACL | COPYFILE_XATTR);
#endif
(void)close(from_fd);
oldmode = sbp->st_mode & ALLPERMS;
if (fchown(to_fd, sbp->st_uid, sbp->st_gid)) {
warn("%s: set owner/group (was: %lu/%lu)", to,
(u_long)sbp->st_uid, (u_long)sbp->st_gid);
if (oldmode & (S_ISUID | S_ISGID)) {
warnx(
"%s: owner/group changed; clearing suid/sgid (mode was 0%03o)",
to, oldmode);
sbp->st_mode &= ~(S_ISUID | S_ISGID);
}
}
if (fchmod(to_fd, sbp->st_mode))
warn("%s: set mode (was: 0%03o)", to, oldmode);
errno = 0;
if (fchflags(to_fd, (u_long)sbp->st_flags))
if (errno != EOPNOTSUPP || sbp->st_flags != 0)
warn("%s: set flags (was: 0%07o)", to, sbp->st_flags);
tval[0].tv_sec = sbp->st_atime;
tval[1].tv_sec = sbp->st_mtime;
tval[0].tv_usec = tval[1].tv_usec = 0;
if (utimes(to, tval))
warn("%s: set times", to);
if (close(to_fd)) {
warn("%s", to);
return (1);
}
if (unlink(from)) {
warn("%s: remove", from);
return (1);
}
if (vflg)
printf("%s -> %s\n", from, to);
return (0);
}
int
copy(char *from, char *to)
{
int pid, status;
if ((pid = fork()) == 0) {
execl(_PATH_CP, "mv", vflg ? "-PRpv" : "-PRp", "--", from, to,
(char *)NULL);
warn("%s", _PATH_CP);
_exit(1);
}
if (waitpid(pid, &status, 0) == -1) {
warn("%s: waitpid", _PATH_CP);
return (1);
}
if (!WIFEXITED(status)) {
warn("%s: did not terminate normally", _PATH_CP);
return (1);
}
if (WEXITSTATUS(status)) {
warn("%s: terminated with %d (non-zero) status",
_PATH_CP, WEXITSTATUS(status));
return (1);
}
if (!(pid = vfork())) {
execl(_PATH_RM, "mv", "-rf", "--", from, (char *)NULL);
warn("%s", _PATH_RM);
_exit(1);
}
if (waitpid(pid, &status, 0) == -1) {
warn("%s: waitpid", _PATH_RM);
return (1);
}
if (!WIFEXITED(status)) {
warn("%s: did not terminate normally", _PATH_RM);
return (1);
}
if (WEXITSTATUS(status)) {
warn("%s: terminated with %d (non-zero) status",
_PATH_RM, WEXITSTATUS(status));
return (1);
}
return (0);
}
void
usage(void)
{
(void)fprintf(stderr, "%s\n%s\n",
"usage: mv [-f | -i | -n] [-v] source target",
" mv [-f | -i | -n] [-v] source ... directory");
exit(EX_USAGE);
}