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authorrgrimes <rgrimes@FreeBSD.org>1994-05-26 06:18:55 +0000
committerrgrimes <rgrimes@FreeBSD.org>1994-05-26 06:18:55 +0000
commite3cfc8ce61f788739c66445d903f8beacb40c93d (patch)
treeba7beef9ee9289c4383bad976f88710e44c98b4d /bin/mv/mv.c
parent862fdf11a2ede45dec0da01ed575525d79468981 (diff)
downloadFreeBSD-src-e3cfc8ce61f788739c66445d903f8beacb40c93d.zip
FreeBSD-src-e3cfc8ce61f788739c66445d903f8beacb40c93d.tar.gz
BSD 4.4 Lite bin Sources
Diffstat (limited to 'bin/mv/mv.c')
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diff --git a/bin/mv/mv.c b/bin/mv/mv.c
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--- /dev/null
+++ b/bin/mv/mv.c
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+/*
+ * Copyright (c) 1989, 1993, 1994
+ * The Regents of the University of California. All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Ken Smith of The State University of New York at Buffalo.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef lint
+static char copyright[] =
+"@(#) Copyright (c) 1989, 1993, 1994\n\
+ The Regents of the University of California. All rights reserved.\n";
+#endif /* not lint */
+
+#ifndef lint
+static char sccsid[] = "@(#)mv.c 8.2 (Berkeley) 4/2/94";
+#endif /* not lint */
+
+#include <sys/param.h>
+#include <sys/time.h>
+#include <sys/wait.h>
+#include <sys/stat.h>
+
+#include <err.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include "pathnames.h"
+
+int fflg, iflg;
+
+int copy __P((char *, char *));
+int do_move __P((char *, char *));
+int fastcopy __P((char *, char *, struct stat *));
+void usage __P((void));
+
+int
+main(argc, argv)
+ int argc;
+ char *argv[];
+{
+ register int baselen, len, rval;
+ register char *p, *endp;
+ struct stat sb;
+ int ch;
+ char path[MAXPATHLEN + 1];
+
+ while ((ch = getopt(argc, argv, "-if")) != EOF)
+ switch (ch) {
+ case 'i':
+ iflg = 1;
+ break;
+ case 'f':
+ fflg = 1;
+ break;
+ case '-': /* Undocumented; for compatibility. */
+ goto endarg;
+ case '?':
+ default:
+ usage();
+ }
+endarg: argc -= optind;
+ argv += optind;
+
+ if (argc < 2)
+ usage();
+
+ /*
+ * If the stat on the target fails or the target isn't a directory,
+ * try the move. More than 2 arguments is an error in this case.
+ */
+ if (stat(argv[argc - 1], &sb) || !S_ISDIR(sb.st_mode)) {
+ if (argc > 2)
+ usage();
+ exit(do_move(argv[0], argv[1]));
+ }
+
+ /* It's a directory, move each file into it. */
+ (void)strcpy(path, argv[argc - 1]);
+ baselen = strlen(path);
+ endp = &path[baselen];
+ *endp++ = '/';
+ ++baselen;
+ for (rval = 0; --argc; ++argv) {
+ if ((p = strrchr(*argv, '/')) == NULL)
+ p = *argv;
+ else
+ ++p;
+ if ((baselen + (len = strlen(p))) >= MAXPATHLEN) {
+ warnx("%s: destination pathname too long", *argv);
+ rval = 1;
+ } else {
+ memmove(endp, p, len + 1);
+ if (do_move(*argv, path))
+ rval = 1;
+ }
+ }
+ exit(rval);
+}
+
+int
+do_move(from, to)
+ char *from, *to;
+{
+ struct stat sb;
+ int ask, ch;
+ char modep[15];
+
+ /*
+ * Check access. If interactive and file exists, ask user if it
+ * should be replaced. Otherwise if file exists but isn't writable
+ * make sure the user wants to clobber it.
+ */
+ if (!fflg && !access(to, F_OK)) {
+ ask = 0;
+ if (iflg) {
+ (void)fprintf(stderr, "overwrite %s? ", to);
+ 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? ",
+ modep + 1, modep[9] == ' ' ? "" : " ",
+ user_from_uid(sb.st_uid, 0),
+ group_from_gid(sb.st_gid, 0), to);
+ ask = 1;
+ }
+ if (ask) {
+ if ((ch = getchar()) != EOF && ch != '\n')
+ while (getchar() != '\n');
+ if (ch != 'y')
+ return (0);
+ }
+ }
+ if (!rename(from, to))
+ return (0);
+
+ if (errno != EXDEV) {
+ warn("rename %s to %s", from, to);
+ return (1);
+ }
+
+ /*
+ * If rename fails because we're trying to cross devices, and
+ * it's a regular file, do the copy internally; otherwise, use
+ * cp and rm.
+ */
+ if (stat(from, &sb)) {
+ warn("%s", from);
+ return (1);
+ }
+ return (S_ISREG(sb.st_mode) ?
+ fastcopy(from, to, &sb) : copy(from, to));
+}
+
+int
+fastcopy(from, to, sbp)
+ char *from, *to;
+ struct stat *sbp;
+{
+ struct timeval tval[2];
+ static u_int blen;
+ static char *bp;
+ register int nread, from_fd, to_fd;
+
+ if ((from_fd = open(from, O_RDONLY, 0)) < 0) {
+ warn("%s", from);
+ return (1);
+ }
+ if ((to_fd =
+ open(to, O_CREAT | O_TRUNC | O_WRONLY, sbp->st_mode)) < 0) {
+ warn("%s", to);
+ (void)close(from_fd);
+ return (1);
+ }
+ if (!blen && !(bp = malloc(blen = sbp->st_blksize))) {
+ warn(NULL);
+ return (1);
+ }
+ while ((nread = read(from_fd, bp, blen)) > 0)
+ if (write(to_fd, bp, 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);
+ }
+ (void)close(from_fd);
+
+ if (fchown(to_fd, sbp->st_uid, sbp->st_gid))
+ warn("%s: set owner/group", to);
+ if (fchmod(to_fd, sbp->st_mode))
+ warn("%s: set mode", to);
+
+ 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);
+ }
+ return (0);
+}
+
+int
+copy(from, to)
+ char *from, *to;
+{
+ int pid, status;
+
+ if ((pid = vfork()) == 0) {
+ execl(_PATH_CP, "mv", "-PRp", from, to, 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, 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)fprintf(stderr,
+"usage: mv [-if] src target;\n or: mv [-if] src1 ... srcN directory\n");
+ exit(1);
+}
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