Index: /trunk/src/gmake/kmkbuiltin/mv.c
===================================================================
--- /trunk/src/gmake/kmkbuiltin/mv.c	(revision 612)
+++ /trunk/src/gmake/kmkbuiltin/mv.c	(revision 612)
@@ -0,0 +1,408 @@
+/*-
+ * 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.
+ * 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.
+ */
+
+#if 0
+#ifndef lint
+static char const 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 */
+#endif
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD: src/bin/mv/mv.c,v 1.46 2005/09/05 04:36:08 csjp Exp $");
+
+#include <sys/types.h>
+#include <sys/acl.h>
+#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>
+
+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;
+	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 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. */
+	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) {
+		/*
+		 * Find the last component of the source pathname.  It
+		 * may have trailing slashes.
+		 */
+		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];
+
+	/*
+	 * 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)) {
+
+		/* prompt only if source exist */
+	        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 the source is a symbolic link and is on another
+		 * filesystem, it can be recreated at the destination.
+		 */
+		if (lstat(from, &sb) == -1) {
+			warn("%s", from);
+			return (1);
+		}
+		if (!S_ISLNK(sb.st_mode)) {
+			/* Can't mv(1) a mount point. */
+			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 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 (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;
+	acl_t acl;
+
+	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);
+	}
+
+	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);
+		}
+	}
+	/*
+	 * POSIX 1003.2c states that if _POSIX_ACL_EXTENDED is in effect
+	 * for dest_file, then it's ACLs shall reflect the ACLs of the
+	 * source_file.
+	 */
+	if (fpathconf(to_fd, _PC_ACL_EXTENDED) == 1 &&
+	    fpathconf(from_fd, _PC_ACL_EXTENDED) == 1) {
+		acl = acl_get_fd(from_fd);
+		if (acl == NULL)
+			warn("failed to get acl entries while setting %s",
+			    from);
+		else if (acl_set_fd(to_fd, acl) < 0)
+			warn("failed to set acl entries for %s", to);
+	}
+	(void)close(from_fd);
+	if (fchmod(to_fd, sbp->st_mode))
+		warn("%s: set mode (was: 0%03o)", to, oldmode);
+	/*
+	 * XXX
+	 * NFS doesn't support chflags; ignore errors unless there's reason
+	 * to believe we're losing bits.  (Note, this still won't be right
+	 * if the server supports flags and we were trying to *remove* flags
+	 * on a file that we copied, i.e., that we didn't create.)
+	 */
+	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)) {
+		warnx("%s: did not terminate normally", _PATH_CP);
+		return (1);
+	}
+	if (WEXITSTATUS(status)) {
+		warnx("%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)) {
+		warnx("%s: did not terminate normally", _PATH_RM);
+		return (1);
+	}
+	if (WEXITSTATUS(status)) {
+		warnx("%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);
+}