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 source tree.
|
---|
9 | */
|
---|
10 |
|
---|
11 | /* Mar 16, 2003 Manuel Novoa III (mjn3@codepoet.org)
|
---|
12 | *
|
---|
13 | * Size reduction and improved error checking.
|
---|
14 | */
|
---|
15 |
|
---|
16 | #include "libbb.h"
|
---|
17 | #include "libcoreutils/coreutils.h"
|
---|
18 |
|
---|
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: "\nOptions:"
|
---|
25 | //usage: "\n -f Don't prompt before overwriting"
|
---|
26 | //usage: "\n -i Interactive, prompt before overwrite"
|
---|
27 | //usage: "\n -n Don't overwrite an existing file"
|
---|
28 | //usage:
|
---|
29 | //usage:#define mv_example_usage
|
---|
30 | //usage: "$ mv /tmp/foo /bin/bar\n"
|
---|
31 |
|
---|
32 | #if ENABLE_FEATURE_MV_LONG_OPTIONS
|
---|
33 | static const char mv_longopts[] ALIGN1 =
|
---|
34 | "interactive\0" No_argument "i"
|
---|
35 | "force\0" No_argument "f"
|
---|
36 | "no-clobber\0" No_argument "n"
|
---|
37 | ;
|
---|
38 | #endif
|
---|
39 |
|
---|
40 | #define OPT_FILEUTILS_FORCE 1
|
---|
41 | #define OPT_FILEUTILS_INTERACTIVE 2
|
---|
42 | #define OPT_FILEUTILS_NOCLOBBER 4
|
---|
43 |
|
---|
44 | int mv_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
|
---|
45 | int mv_main(int argc, char **argv)
|
---|
46 | {
|
---|
47 | struct stat dest_stat;
|
---|
48 | const char *last;
|
---|
49 | const char *dest;
|
---|
50 | unsigned flags;
|
---|
51 | int dest_exists;
|
---|
52 | int status = 0;
|
---|
53 | int copy_flag = 0;
|
---|
54 |
|
---|
55 | #if ENABLE_FEATURE_MV_LONG_OPTIONS
|
---|
56 | applet_long_options = mv_longopts;
|
---|
57 | #endif
|
---|
58 | /* Need at least two arguments.
|
---|
59 | * If more than one of -f, -i, -n is specified , only the final one
|
---|
60 | * takes effect (it unsets previous options). */
|
---|
61 | opt_complementary = "-2:f-in:i-fn:n-fi";
|
---|
62 | flags = getopt32(argv, "fin");
|
---|
63 | argc -= optind;
|
---|
64 | argv += optind;
|
---|
65 | last = argv[argc - 1];
|
---|
66 |
|
---|
67 | if (argc == 2) {
|
---|
68 | dest_exists = cp_mv_stat(last, &dest_stat);
|
---|
69 | if (dest_exists < 0) {
|
---|
70 | return EXIT_FAILURE;
|
---|
71 | }
|
---|
72 |
|
---|
73 | if (!(dest_exists & 2)) { /* last is not a directory */
|
---|
74 | dest = last;
|
---|
75 | goto DO_MOVE;
|
---|
76 | }
|
---|
77 | }
|
---|
78 |
|
---|
79 | do {
|
---|
80 | dest = concat_path_file(last, bb_get_last_path_component_strip(*argv));
|
---|
81 | dest_exists = cp_mv_stat(dest, &dest_stat);
|
---|
82 | if (dest_exists < 0) {
|
---|
83 | goto RET_1;
|
---|
84 | }
|
---|
85 |
|
---|
86 | DO_MOVE:
|
---|
87 | if (dest_exists) {
|
---|
88 | if (flags & OPT_FILEUTILS_NOCLOBBER)
|
---|
89 | goto RET_0;
|
---|
90 | if (!(flags & OPT_FILEUTILS_FORCE)
|
---|
91 | && ((access(dest, W_OK) < 0 && isatty(0))
|
---|
92 | || (flags & OPT_FILEUTILS_INTERACTIVE))
|
---|
93 | ) {
|
---|
94 | if (fprintf(stderr, "mv: overwrite '%s'? ", dest) < 0) {
|
---|
95 | goto RET_1; /* Ouch! fprintf failed! */
|
---|
96 | }
|
---|
97 | if (!bb_ask_confirmation()) {
|
---|
98 | goto RET_0;
|
---|
99 | }
|
---|
100 | }
|
---|
101 | }
|
---|
102 |
|
---|
103 | if (rename(*argv, dest) < 0) {
|
---|
104 | struct stat source_stat;
|
---|
105 | int source_exists;
|
---|
106 |
|
---|
107 | if (errno != EXDEV
|
---|
108 | || (source_exists = cp_mv_stat2(*argv, &source_stat, lstat)) < 1
|
---|
109 | ) {
|
---|
110 | bb_perror_msg("can't rename '%s'", *argv);
|
---|
111 | } else {
|
---|
112 | static const char fmt[] ALIGN1 =
|
---|
113 | "can't overwrite %sdirectory with %sdirectory";
|
---|
114 |
|
---|
115 | if (dest_exists) {
|
---|
116 | if (dest_exists == 3) {
|
---|
117 | if (source_exists != 3) {
|
---|
118 | bb_error_msg(fmt, "", "non-");
|
---|
119 | goto RET_1;
|
---|
120 | }
|
---|
121 | } else {
|
---|
122 | if (source_exists == 3) {
|
---|
123 | bb_error_msg(fmt, "non-", "");
|
---|
124 | goto RET_1;
|
---|
125 | }
|
---|
126 | }
|
---|
127 | if (unlink(dest) < 0) {
|
---|
128 | bb_perror_msg("can't remove '%s'", dest);
|
---|
129 | goto RET_1;
|
---|
130 | }
|
---|
131 | }
|
---|
132 | /* FILEUTILS_RECUR also prevents nasties like
|
---|
133 | * "read from device and write contents to dst"
|
---|
134 | * instead of "create same device node" */
|
---|
135 | copy_flag = FILEUTILS_RECUR | FILEUTILS_PRESERVE_STATUS;
|
---|
136 | #if ENABLE_SELINUX
|
---|
137 | copy_flag |= FILEUTILS_PRESERVE_SECURITY_CONTEXT;
|
---|
138 | #endif
|
---|
139 | if ((copy_file(*argv, dest, copy_flag) >= 0)
|
---|
140 | && (remove_file(*argv, FILEUTILS_RECUR | FILEUTILS_FORCE) >= 0)
|
---|
141 | ) {
|
---|
142 | goto RET_0;
|
---|
143 | }
|
---|
144 | }
|
---|
145 | RET_1:
|
---|
146 | status = 1;
|
---|
147 | }
|
---|
148 | RET_0:
|
---|
149 | if (dest != last) {
|
---|
150 | free((void *) dest);
|
---|
151 | }
|
---|
152 | } while (*++argv != last);
|
---|
153 |
|
---|
154 | return status;
|
---|
155 | }
|
---|