busybox: update to 1.23.2
[tomato.git] / release / src / router / busybox / coreutils / mv.c
blob50571755b51bd4d0706b96d2d5e7eca16f33b3b1
1 /* vi: set sw=4 ts=4: */
2 /*
3 * Mini mv implementation for busybox
5 * Copyright (C) 2000 by Matt Kraai <kraai@alumni.carnegiemellon.edu>
6 * SELinux support by Yuichi Nakamura <ynakam@hitachisoft.jp>
8 * Licensed under GPLv2 or later, see file LICENSE in this source tree.
9 */
11 /* Mar 16, 2003 Manuel Novoa III (mjn3@codepoet.org)
13 * Size reduction and improved error checking.
16 #include "libbb.h"
17 #include "libcoreutils/coreutils.h"
19 //usage:#define mv_trivial_usage
20 //usage: "[-fin] SOURCE DEST\n"
21 //usage: "or: mv [-fin] SOURCE... DIRECTORY"
22 //usage:#define mv_full_usage "\n\n"
23 //usage: "Rename SOURCE to DEST, or move SOURCE(s) to DIRECTORY\n"
24 //usage: "\n -f Don't prompt before overwriting"
25 //usage: "\n -i Interactive, prompt before overwrite"
26 //usage: "\n -n Don't overwrite an existing file"
27 //usage:
28 //usage:#define mv_example_usage
29 //usage: "$ mv /tmp/foo /bin/bar\n"
31 #if ENABLE_FEATURE_MV_LONG_OPTIONS
32 static const char mv_longopts[] ALIGN1 =
33 "interactive\0" No_argument "i"
34 "force\0" No_argument "f"
35 "no-clobber\0" No_argument "n"
36 IF_FEATURE_VERBOSE(
37 "verbose\0" No_argument "v"
40 #endif
42 #define OPT_FORCE (1 << 0)
43 #define OPT_INTERACTIVE (1 << 1)
44 #define OPT_NOCLOBBER (1 << 2)
45 #define OPT_VERBOSE ((1 << 3) * ENABLE_FEATURE_VERBOSE)
48 int mv_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
49 int mv_main(int argc, char **argv)
51 struct stat dest_stat;
52 const char *last;
53 const char *dest;
54 unsigned flags;
55 int dest_exists;
56 int status = 0;
57 int copy_flag = 0;
59 #if ENABLE_FEATURE_MV_LONG_OPTIONS
60 applet_long_options = mv_longopts;
61 #endif
62 /* Need at least two arguments.
63 * If more than one of -f, -i, -n is specified , only the final one
64 * takes effect (it unsets previous options).
66 opt_complementary = "-2:f-in:i-fn:n-fi";
67 flags = getopt32(argv, "finv");
68 argc -= optind;
69 argv += optind;
70 last = argv[argc - 1];
72 if (argc == 2) {
73 dest_exists = cp_mv_stat(last, &dest_stat);
74 if (dest_exists < 0) {
75 return EXIT_FAILURE;
78 if (!(dest_exists & 2)) { /* last is not a directory */
79 dest = last;
80 goto DO_MOVE;
84 do {
85 dest = concat_path_file(last, bb_get_last_path_component_strip(*argv));
86 dest_exists = cp_mv_stat(dest, &dest_stat);
87 if (dest_exists < 0) {
88 goto RET_1;
91 DO_MOVE:
92 if (dest_exists) {
93 if (flags & OPT_NOCLOBBER)
94 goto RET_0;
95 if (!(flags & OPT_FORCE)
96 && ((access(dest, W_OK) < 0 && isatty(0))
97 || (flags & OPT_INTERACTIVE))
98 ) {
99 if (fprintf(stderr, "mv: overwrite '%s'? ", dest) < 0) {
100 goto RET_1; /* Ouch! fprintf failed! */
102 if (!bb_ask_confirmation()) {
103 goto RET_0;
108 if (rename(*argv, dest) < 0) {
109 struct stat source_stat;
110 int source_exists;
112 if (errno != EXDEV
113 || (source_exists = cp_mv_stat2(*argv, &source_stat, lstat)) < 1
115 bb_perror_msg("can't rename '%s'", *argv);
116 } else {
117 static const char fmt[] ALIGN1 =
118 "can't overwrite %sdirectory with %sdirectory";
120 if (dest_exists) {
121 if (dest_exists == 3) {
122 if (source_exists != 3) {
123 bb_error_msg(fmt, "", "non-");
124 goto RET_1;
126 } else {
127 if (source_exists == 3) {
128 bb_error_msg(fmt, "non-", "");
129 goto RET_1;
132 if (unlink(dest) < 0) {
133 bb_perror_msg("can't remove '%s'", dest);
134 goto RET_1;
137 /* FILEUTILS_RECUR also prevents nasties like
138 * "read from device and write contents to dst"
139 * instead of "create same device node" */
140 copy_flag = FILEUTILS_RECUR | FILEUTILS_PRESERVE_STATUS;
141 #if ENABLE_SELINUX
142 copy_flag |= FILEUTILS_PRESERVE_SECURITY_CONTEXT;
143 #endif
144 if ((copy_file(*argv, dest, copy_flag) >= 0)
145 && (remove_file(*argv, FILEUTILS_RECUR | FILEUTILS_FORCE) >= 0)
147 goto RET_0;
150 RET_1:
151 status = 1;
153 RET_0:
154 if (flags & OPT_VERBOSE) {
155 printf("'%s' -> '%s'\n", *argv, dest);
157 if (dest != last) {
158 free((void *) dest);
160 } while (*++argv != last);
162 return status;