1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
|
/* vi: set sw=4 ts=4: */
/*
* Mini mv implementation for busybox
*
* Copyright (C) 2000 by Matt Kraai <kraai@alumni.carnegiemellon.edu>
* SELinux support by Yuichi Nakamura <ynakam@hitachisoft.jp>
*
* Licensed under GPLv2 or later, see file LICENSE in this source tree.
*/
/* Mar 16, 2003 Manuel Novoa III (mjn3@codepoet.org)
*
* Size reduction and improved error checking.
*/
#include "libbb.h"
#include "libcoreutils/coreutils.h"
//usage:#define mv_trivial_usage
//usage: "[-fin] SOURCE DEST\n"
//usage: "or: mv [-fin] SOURCE... DIRECTORY"
//usage:#define mv_full_usage "\n\n"
//usage: "Rename SOURCE to DEST, or move SOURCE(s) to DIRECTORY\n"
//usage: "\n -f Don't prompt before overwriting"
//usage: "\n -i Interactive, prompt before overwrite"
//usage: "\n -n Don't overwrite an existing file"
//usage:
//usage:#define mv_example_usage
//usage: "$ mv /tmp/foo /bin/bar\n"
#if ENABLE_FEATURE_MV_LONG_OPTIONS
static const char mv_longopts[] ALIGN1 =
"interactive\0" No_argument "i"
"force\0" No_argument "f"
"no-clobber\0" No_argument "n"
;
#endif
#define OPT_FILEUTILS_FORCE 1
#define OPT_FILEUTILS_INTERACTIVE 2
#define OPT_FILEUTILS_NOCLOBBER 4
int mv_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
int mv_main(int argc, char **argv)
{
struct stat dest_stat;
const char *last;
const char *dest;
unsigned flags;
int dest_exists;
int status = 0;
int copy_flag = 0;
#if ENABLE_FEATURE_MV_LONG_OPTIONS
applet_long_options = mv_longopts;
#endif
/* Need at least two arguments.
* If more than one of -f, -i, -n is specified , only the final one
* takes effect (it unsets previous options). */
opt_complementary = "-2:f-in:i-fn:n-fi";
flags = getopt32(argv, "fin");
argc -= optind;
argv += optind;
last = argv[argc - 1];
if (argc == 2) {
dest_exists = cp_mv_stat(last, &dest_stat);
if (dest_exists < 0) {
return EXIT_FAILURE;
}
if (!(dest_exists & 2)) { /* last is not a directory */
dest = last;
goto DO_MOVE;
}
}
do {
dest = concat_path_file(last, bb_get_last_path_component_strip(*argv));
dest_exists = cp_mv_stat(dest, &dest_stat);
if (dest_exists < 0) {
goto RET_1;
}
DO_MOVE:
if (dest_exists) {
if (flags & OPT_FILEUTILS_NOCLOBBER)
goto RET_0;
if (!(flags & OPT_FILEUTILS_FORCE)
&& ((access(dest, W_OK) < 0 && isatty(0))
|| (flags & OPT_FILEUTILS_INTERACTIVE))
) {
if (fprintf(stderr, "mv: overwrite '%s'? ", dest) < 0) {
goto RET_1; /* Ouch! fprintf failed! */
}
if (!bb_ask_confirmation()) {
goto RET_0;
}
}
}
if (rename(*argv, dest) < 0) {
struct stat source_stat;
int source_exists;
if (errno != EXDEV
|| (source_exists = cp_mv_stat2(*argv, &source_stat, lstat)) < 1
) {
bb_perror_msg("can't rename '%s'", *argv);
} else {
static const char fmt[] ALIGN1 =
"can't overwrite %sdirectory with %sdirectory";
if (dest_exists) {
if (dest_exists == 3) {
if (source_exists != 3) {
bb_error_msg(fmt, "", "non-");
goto RET_1;
}
} else {
if (source_exists == 3) {
bb_error_msg(fmt, "non-", "");
goto RET_1;
}
}
if (unlink(dest) < 0) {
bb_perror_msg("can't remove '%s'", dest);
goto RET_1;
}
}
/* FILEUTILS_RECUR also prevents nasties like
* "read from device and write contents to dst"
* instead of "create same device node" */
copy_flag = FILEUTILS_RECUR | FILEUTILS_PRESERVE_STATUS;
#if ENABLE_SELINUX
copy_flag |= FILEUTILS_PRESERVE_SECURITY_CONTEXT;
#endif
if ((copy_file(*argv, dest, copy_flag) >= 0)
&& (remove_file(*argv, FILEUTILS_RECUR | FILEUTILS_FORCE) >= 0)
) {
goto RET_0;
}
}
RET_1:
status = 1;
}
RET_0:
if (dest != last) {
free((void *) dest);
}
} while (*++argv != last);
return status;
}
|
