+/*
+ * Copyright (c) 1989 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
+char copyright[] =
+"@(#) Copyright (c) 1989 The Regents of the University of California.\n\
+ All rights reserved.\n";
+#endif /* not lint */
+
+#ifndef lint
+static char sccsid[] = "@(#)mv.c 5.11 (Berkeley) 4/3/91";
+#endif /* not lint */
+
+#include <sys/param.h>
+#include <sys/time.h>
+#include <sys/wait.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <errno.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include "pathnames.h"
+
+int fflg, iflg;
+
+main(argc, argv)
+ int argc;
+ char **argv;
+{
+ extern char *optarg;
+ extern int optind;
+ register int baselen, exitval, len;
+ register char *p, *endp;
+ struct stat sb;
+ int ch;
+ char path[MAXPATHLEN + 1];
+
+ while (((ch = getopt(argc, argv, "-if")) != EOF))
+ switch((char)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 (exitval = 0; --argc; ++argv) {
+ if ((p = rindex(*argv, '/')) == NULL)
+ p = *argv;
+ else
+ ++p;
+ if ((baselen + (len = strlen(p))) >= MAXPATHLEN)
+ (void)fprintf(stderr,
+ "mv: %s: destination pathname too long\n", *argv);
+ else {
+ bcopy(p, endp, len + 1);
+ exitval |= do_move(*argv, path);
+ }
+ }
+ exit(exitval);
+}
+
+do_move(from, to)
+ char *from, *to;
+{
+ struct stat sb;
+ int ask, ch;
+
+ /*
+ * 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)) {
+ (void)fprintf(stderr, "override mode %o on %s? ",
+ sb.st_mode & 07777, 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) {
+ (void)fprintf(stderr,
+ "mv: rename %s to %s: %s\n", from, to, strerror(errno));
+ return(1);
+ }
+
+ /*
+ * If rename fails, and it's a regular file, do the copy internally;
+ * otherwise, use cp and rm.
+ */
+ if (stat(from, &sb)) {
+ (void)fprintf(stderr, "mv: %s: %s\n", from, strerror(errno));
+ return(1);
+ }
+ return(S_ISREG(sb.st_mode) ?
+ fastcopy(from, to, &sb) : copy(from, to));
+}
+
+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) {
+ error(from);
+ return(1);
+ }
+ if ((to_fd = open(to, O_CREAT|O_TRUNC|O_WRONLY, sbp->st_mode)) < 0) {
+ error(to);
+ (void)close(from_fd);
+ return(1);
+ }
+ if (!blen && !(bp = malloc(blen = sbp->st_blksize))) {
+ error(NULL);
+ return(1);
+ }
+ while ((nread = read(from_fd, bp, blen)) > 0)
+ if (write(to_fd, bp, nread) != nread) {
+ error(to);
+ goto err;
+ }
+ if (nread < 0) {
+ error(from);
+err: (void)unlink(to);
+ (void)close(from_fd);
+ (void)close(to_fd);
+ return(1);
+ }
+ (void)fchown(to_fd, sbp->st_uid, sbp->st_gid);
+ (void)fchmod(to_fd, sbp->st_mode);
+
+ (void)close(from_fd);
+ (void)close(to_fd);
+
+ tval[0].tv_sec = sbp->st_atime;
+ tval[1].tv_sec = sbp->st_mtime;
+ tval[0].tv_usec = tval[1].tv_usec = 0;
+ (void)utimes(to, tval);
+ (void)unlink(from);
+ return(0);
+}
+
+copy(from, to)
+ char *from, *to;
+{
+ int pid, status;
+
+ if (!(pid = vfork())) {
+ execl(_PATH_CP, "mv", "-pr", from, to, NULL);
+ error(_PATH_CP);
+ _exit(1);
+ }
+ (void)waitpid(pid, &status, 0);
+ if (!WIFEXITED(status) || WEXITSTATUS(status))
+ return(1);
+ if (!(pid = vfork())) {
+ execl(_PATH_RM, "mv", "-rf", from, NULL);
+ error(_PATH_RM);
+ _exit(1);
+ }
+ (void)waitpid(pid, &status, 0);
+ return(!WIFEXITED(status) || WEXITSTATUS(status));
+}
+
+error(s)
+ char *s;
+{
+ if (s)
+ (void)fprintf(stderr, "mv: %s: %s\n", s, strerror(errno));
+ else
+ (void)fprintf(stderr, "mv: %s\n", strerror(errno));
+}
+
+usage()
+{
+ (void)fprintf(stderr,
+"usage: mv [-if] src target;\n or: mv [-if] src1 ... srcN directory\n");
+ exit(1);
+}
projects / unix-history / commitdiff