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
|
/* vi: set sw=4 ts=4: */
/*
* Mini cp implementation for busybox
*
* Copyright (C) 2000 by Matt Kraai <kraai@alumni.carnegiemellon.edu>
*
* Licensed under GPL v2 or later, see file LICENSE in this tarball for details.
*/
/* BB_AUDIT SUSv3 defects - unsupported options -H, -L, and -P. */
/* BB_AUDIT GNU defects - only extension options supported are -a and -d. */
/* http://www.opengroup.org/onlinepubs/007904975/utilities/cp.html */
/* Mar 16, 2003 Manuel Novoa III (mjn3@codepoet.org)
*
* Size reduction.
*/
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <fcntl.h>
#include <utime.h>
#include <errno.h>
#include <dirent.h>
#include <stdlib.h>
#include <assert.h>
#include "busybox.h"
#include "libcoreutils/coreutils.h"
int cp_main(int argc, char **argv)
{
struct stat source_stat;
struct stat dest_stat;
const char *last;
const char *dest;
int s_flags;
int d_flags;
int flags;
int status = 0;
flags = getopt32(argc, argv, "pdRfiarPHL");
if (flags & 32) {
flags |= (FILEUTILS_PRESERVE_STATUS | FILEUTILS_RECUR | FILEUTILS_DEREFERENCE);
}
if (flags & 64) {
/* Make -r a synonym for -R,
* -r was marked as obsolete in SUSv3, but is included for compatibility
*/
flags |= FILEUTILS_RECUR;
}
if (flags & 128) {
/* Make -P a synonym for -d,
* -d is the GNU option while -P is the POSIX 2003 option
*/
flags |= FILEUTILS_DEREFERENCE;
}
/* Default behavior of cp is to dereference, so we don't have to do
* anything special when we are given -L.
* The behavior of -H is *almost* like -L, but not quite, so let's
* just ignore it too for fun.
if (flags & 256 || flags & 512) {
;
}
*/
flags ^= FILEUTILS_DEREFERENCE; /* The sense of this flag was reversed. */
if (optind + 2 > argc) {
bb_show_usage();
}
last = argv[argc - 1];
argv += optind;
/* If there are only two arguments and... */
if (optind + 2 == argc) {
s_flags = cp_mv_stat2(*argv, &source_stat,
(flags & FILEUTILS_DEREFERENCE) ? stat : lstat);
if ((s_flags < 0) || ((d_flags = cp_mv_stat(last, &dest_stat)) < 0)) {
exit(EXIT_FAILURE);
}
/* ...if neither is a directory or... */
if ( !((s_flags | d_flags) & 2) ||
/* ...recursing, the 1st is a directory, and the 2nd doesn't exist... */
/* ((flags & FILEUTILS_RECUR) && (s_flags & 2) && !d_flags) */
/* Simplify the above since FILEUTILS_RECUR >> 1 == 2. */
((((flags & FILEUTILS_RECUR) >> 1) & s_flags) && !d_flags)
) {
/* ...do a simple copy. */
dest = last;
goto DO_COPY; /* Note: optind+2==argc implies argv[1]==last below. */
}
}
do {
dest = concat_path_file(last, bb_get_last_path_component(*argv));
DO_COPY:
if (copy_file(*argv, dest, flags) < 0) {
status = 1;
}
if (*++argv == last) {
break;
}
free((void *) dest);
} while (1);
exit(status);
}
|
