1/* vi: set sw=4 ts=4: */
2/*
3 * Mini mv implementation for busybox
4 *
5 * Copyright (C) 2000 by Matt Kraai <kraai@alumni.carnegiemellon.edu>
6 * SELinux support by Yuichi Nakamura <ynakam@hitachisoft.jp>
7 *
8 * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
9 */
10
11/* Mar 16, 2003      Manuel Novoa III   (mjn3@codepoet.org)
12 *
13 * Size reduction and improved error checking.
14 */
15
16#include <sys/types.h>
17#include <sys/stat.h>
18#include <dirent.h>
19#include <getopt.h> /* struct option */
20#include "libbb.h"
21#include "libcoreutils/coreutils.h"
22
23#if ENABLE_FEATURE_MV_LONG_OPTIONS
24static const char mv_longopts[] ALIGN1 =
25	"interactive\0" No_argument "i"
26	"force\0"       No_argument "f"
27	;
28#endif
29
30#define OPT_FILEUTILS_FORCE       1
31#define OPT_FILEUTILS_INTERACTIVE 2
32
33static const char fmt[] ALIGN1 =
34	"cannot overwrite %sdirectory with %sdirectory";
35
36int mv_main(int argc, char **argv);
37int mv_main(int argc, char **argv)
38{
39	struct stat dest_stat;
40	const char *last;
41	const char *dest;
42	unsigned long flags;
43	int dest_exists;
44	int status = 0;
45	int copy_flag = 0;
46
47#if ENABLE_FEATURE_MV_LONG_OPTIONS
48	applet_long_options = mv_longopts;
49#endif
50	opt_complementary = "f-i:i-f";
51	flags = getopt32(argv, "fi");
52	if (optind + 2 > argc) {
53		bb_show_usage();
54	}
55
56	last = argv[argc - 1];
57	argv += optind;
58
59	if (optind + 2 == argc) {
60		dest_exists = cp_mv_stat(last, &dest_stat);
61		if (dest_exists < 0) {
62			return 1;
63		}
64
65		if (!(dest_exists & 2)) {
66			dest = last;
67			goto DO_MOVE;
68		}
69	}
70
71	do {
72		dest = concat_path_file(last, bb_get_last_path_component(*argv));
73		dest_exists = cp_mv_stat(dest, &dest_stat);
74		if (dest_exists < 0) {
75			goto RET_1;
76		}
77
78DO_MOVE:
79
80		if (dest_exists && !(flags & OPT_FILEUTILS_FORCE) &&
81			((access(dest, W_OK) < 0 && isatty(0)) ||
82			(flags & OPT_FILEUTILS_INTERACTIVE))) {
83			if (fprintf(stderr, "mv: overwrite '%s'? ", dest) < 0) {
84				goto RET_1;	/* Ouch! fprintf failed! */
85			}
86			if (!bb_ask_confirmation()) {
87				goto RET_0;
88			}
89		}
90		if (rename(*argv, dest) < 0) {
91			struct stat source_stat;
92			int source_exists;
93
94			if (errno != EXDEV ||
95				(source_exists = cp_mv_stat(*argv, &source_stat)) < 1) {
96				bb_perror_msg("cannot rename '%s'", *argv);
97			} else {
98				if (dest_exists) {
99					if (dest_exists == 3) {
100						if (source_exists != 3) {
101							bb_error_msg(fmt, "", "non-");
102							goto RET_1;
103						}
104					} else {
105						if (source_exists == 3) {
106							bb_error_msg(fmt, "non-", "");
107							goto RET_1;
108						}
109					}
110					if (unlink(dest) < 0) {
111						bb_perror_msg("cannot remove '%s'", dest);
112						goto RET_1;
113					}
114				}
115				copy_flag = FILEUTILS_RECUR | FILEUTILS_PRESERVE_STATUS;
116#if ENABLE_SELINUX
117				copy_flag |= FILEUTILS_PRESERVE_SECURITY_CONTEXT;
118#endif
119				if ((copy_file(*argv, dest, copy_flag) >= 0) &&
120					(remove_file(*argv, FILEUTILS_RECUR | FILEUTILS_FORCE) >= 0)) {
121					goto RET_0;
122				}
123			}
124RET_1:
125			status = 1;
126		}
127RET_0:
128		if (dest != last) {
129			free((void *) dest);
130		}
131	} while (*++argv != last);
132
133	return status;
134}
135