Contents of /trunk/mkinitrd-magellan/busybox/coreutils/mv.c
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Revision 816 -
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Fri Apr 24 18:33:46 2009 UTC (15 years, 5 months ago) by niro
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File size: 3187 byte(s)
Fri Apr 24 18:33:46 2009 UTC (15 years, 5 months ago) by niro
File MIME type: text/plain
File size: 3187 byte(s)
-updated to busybox-1.13.4
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 "libbb.h" |
17 | #include "libcoreutils/coreutils.h" |
18 | |
19 | #if ENABLE_FEATURE_MV_LONG_OPTIONS |
20 | static const char mv_longopts[] ALIGN1 = |
21 | "interactive\0" No_argument "i" |
22 | "force\0" No_argument "f" |
23 | ; |
24 | #endif |
25 | |
26 | #define OPT_FILEUTILS_FORCE 1 |
27 | #define OPT_FILEUTILS_INTERACTIVE 2 |
28 | |
29 | int mv_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; |
30 | int mv_main(int argc, char **argv) |
31 | { |
32 | struct stat dest_stat; |
33 | const char *last; |
34 | const char *dest; |
35 | unsigned flags; |
36 | int dest_exists; |
37 | int status = 0; |
38 | int copy_flag = 0; |
39 | |
40 | #if ENABLE_FEATURE_MV_LONG_OPTIONS |
41 | applet_long_options = mv_longopts; |
42 | #endif |
43 | // Need at least two arguments |
44 | // -f unsets -i, -i unsets -f |
45 | opt_complementary = "-2:f-i:i-f"; |
46 | flags = getopt32(argv, "fi"); |
47 | argc -= optind; |
48 | argv += optind; |
49 | last = argv[argc - 1]; |
50 | |
51 | if (argc == 2) { |
52 | dest_exists = cp_mv_stat(last, &dest_stat); |
53 | if (dest_exists < 0) { |
54 | return EXIT_FAILURE; |
55 | } |
56 | |
57 | if (!(dest_exists & 2)) { /* last is not a directory */ |
58 | dest = last; |
59 | goto DO_MOVE; |
60 | } |
61 | } |
62 | |
63 | do { |
64 | dest = concat_path_file(last, bb_get_last_path_component_strip(*argv)); |
65 | dest_exists = cp_mv_stat(dest, &dest_stat); |
66 | if (dest_exists < 0) { |
67 | goto RET_1; |
68 | } |
69 | |
70 | DO_MOVE: |
71 | if (dest_exists |
72 | && !(flags & OPT_FILEUTILS_FORCE) |
73 | && ((access(dest, W_OK) < 0 && isatty(0)) |
74 | || (flags & OPT_FILEUTILS_INTERACTIVE)) |
75 | ) { |
76 | if (fprintf(stderr, "mv: overwrite '%s'? ", dest) < 0) { |
77 | goto RET_1; /* Ouch! fprintf failed! */ |
78 | } |
79 | if (!bb_ask_confirmation()) { |
80 | goto RET_0; |
81 | } |
82 | } |
83 | if (rename(*argv, dest) < 0) { |
84 | struct stat source_stat; |
85 | int source_exists; |
86 | |
87 | if (errno != EXDEV |
88 | || (source_exists = cp_mv_stat2(*argv, &source_stat, lstat)) < 1 |
89 | ) { |
90 | bb_perror_msg("cannot rename '%s'", *argv); |
91 | } else { |
92 | static const char fmt[] ALIGN1 = |
93 | "cannot overwrite %sdirectory with %sdirectory"; |
94 | |
95 | if (dest_exists) { |
96 | if (dest_exists == 3) { |
97 | if (source_exists != 3) { |
98 | bb_error_msg(fmt, "", "non-"); |
99 | goto RET_1; |
100 | } |
101 | } else { |
102 | if (source_exists == 3) { |
103 | bb_error_msg(fmt, "non-", ""); |
104 | goto RET_1; |
105 | } |
106 | } |
107 | if (unlink(dest) < 0) { |
108 | bb_perror_msg("cannot remove '%s'", dest); |
109 | goto RET_1; |
110 | } |
111 | } |
112 | /* FILEUTILS_RECUR also prevents nasties like |
113 | * "read from device and write contents to dst" |
114 | * instead of "create same device node" */ |
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 | ) { |
122 | goto RET_0; |
123 | } |
124 | } |
125 | RET_1: |
126 | status = 1; |
127 | } |
128 | RET_0: |
129 | if (dest != last) { |
130 | free((void *) dest); |
131 | } |
132 | } while (*++argv != last); |
133 | |
134 | return status; |
135 | } |