Diff of /trunk/mkinitrd-magellan/busybox/coreutils/mv.c

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	revision 532 by niro, Sat Sep 1 22:45:15 2007 UTC	revision 816 by niro, Fri Apr 24 18:33:46 2009 UTC
#	Line 3	Line 3
3	* Mini mv implementation for busybox	* Mini mv implementation for busybox
4	*	*
5	* Copyright (C) 2000 by Matt Kraai <kraai@alumni.carnegiemellon.edu>	* 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.	* Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
9	*/	*/
#	Line 12	Line 13
13	* Size reduction and improved error checking.	* Size reduction and improved error checking.
14	*/	*/
15
16	#include <sys/types.h>	#include "libbb.h"
	#include <sys/stat.h>
	#include <unistd.h>
	#include <dirent.h>
	#include <errno.h>
	#include <stdlib.h>
	#include <getopt.h> /* struct option */
	#include "busybox.h"
17	#include "libcoreutils/coreutils.h"	#include "libcoreutils/coreutils.h"
18
19	#if ENABLE_FEATURE_MV_LONG_OPTIONS	#if ENABLE_FEATURE_MV_LONG_OPTIONS
20	static const struct option mv_long_options[] = {	static const char mv_longopts[] ALIGN1 =
21	{ "interactive", 0, NULL, 'i' },	"interactive\0" No_argument "i"
22	{ "force", 0, NULL, 'f' },	"force\0"       No_argument "f"
23	{ 0, 0, 0, 0 }	;
	};
24	#endif	#endif
25
26	#define OPT_FILEUTILS_FORCE       1	#define OPT_FILEUTILS_FORCE       1
27	#define OPT_FILEUTILS_INTERACTIVE 2	#define OPT_FILEUTILS_INTERACTIVE 2
28
29	static const char fmt[] = "cannot overwrite %sdirectory with %sdirectory";	int mv_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
30	int mv_main(int argc, char **argv)	int mv_main(int argc, char **argv)
31	{	{
32	struct stat dest_stat;	struct stat dest_stat;
33	const char *last;	const char *last;
34	const char *dest;	const char *dest;
35	unsigned long flags;	unsigned flags;
36	int dest_exists;	int dest_exists;
37	int status = 0;	int status = 0;
38		int copy_flag = 0;
39
40	#if ENABLE_FEATURE_MV_LONG_OPTIONS	#if ENABLE_FEATURE_MV_LONG_OPTIONS
41	applet_long_options = mv_long_options;	applet_long_options = mv_longopts;
42	#endif	#endif
43	opt_complementary = "f-i:i-f";	// Need at least two arguments
44	flags = getopt32(argc, argv, "fi");	// -f unsets -i, -i unsets -f
45	if (optind + 2 > argc) {	opt_complementary = "-2:f-i:i-f";
46	bb_show_usage();	flags = getopt32(argv, "fi");
47	}	argc -= optind;
	last = argv[argc - 1];
48	argv += optind;	argv += optind;
49		last = argv[argc - 1];
50
51	if (optind + 2 == argc) {	if (argc == 2) {
52	dest_exists = cp_mv_stat(last, &dest_stat);	dest_exists = cp_mv_stat(last, &dest_stat);
53	if (dest_exists < 0) {	if (dest_exists < 0) {
54	return 1;	return EXIT_FAILURE;
55	}	}
56
57	if (!(dest_exists & 2)) {	if (!(dest_exists & 2)) { /* last is not a directory */
58	dest = last;	dest = last;
59	goto DO_MOVE;	goto DO_MOVE;
60	}	}
61	}	}
62
63	do {	do {
64	dest = concat_path_file(last, bb_get_last_path_component(*argv));	dest = concat_path_file(last, bb_get_last_path_component_strip(*argv));
65	dest_exists = cp_mv_stat(dest, &dest_stat);	dest_exists = cp_mv_stat(dest, &dest_stat);
66	if (dest_exists < 0) {	if (dest_exists < 0) {
67	goto RET_1;	goto RET_1;
68	}	}
69
70	DO_MOVE:	DO_MOVE:
71		if (dest_exists
72	if (dest_exists && !(flags & OPT_FILEUTILS_FORCE) &&	&& !(flags & OPT_FILEUTILS_FORCE)
73	((access(dest, W_OK) < 0 && isatty(0)) ||	&& ((access(dest, W_OK) < 0 && isatty(0))
74	(flags & OPT_FILEUTILS_INTERACTIVE))) {	|| (flags & OPT_FILEUTILS_INTERACTIVE))
75		) {
76	if (fprintf(stderr, "mv: overwrite '%s'? ", dest) < 0) {	if (fprintf(stderr, "mv: overwrite '%s'? ", dest) < 0) {
77	goto RET_1; /* Ouch! fprintf failed! */	goto RET_1; /* Ouch! fprintf failed! */
78	}	}
#	Line 91  DO_MOVE:	Line 84  DO_MOVE:
84	struct stat source_stat;	struct stat source_stat;
85	int source_exists;	int source_exists;
86
87	if (errno != EXDEV ||	if (errno != EXDEV
88	(source_exists = cp_mv_stat(*argv, &source_stat)) < 1) {	|| (source_exists = cp_mv_stat2(*argv, &source_stat, lstat)) < 1
89		) {
90	bb_perror_msg("cannot rename '%s'", *argv);	bb_perror_msg("cannot rename '%s'", *argv);
91	} else {	} else {
92		static const char fmt[] ALIGN1 =
93		"cannot overwrite %sdirectory with %sdirectory";
94
95	if (dest_exists) {	if (dest_exists) {
96	if (dest_exists == 3) {	if (dest_exists == 3) {
97	if (source_exists != 3) {	if (source_exists != 3) {
#	Line 112  DO_MOVE:	Line 109  DO_MOVE:
109	goto RET_1;	goto RET_1;
110	}	}
111	}	}
112	if ((copy_file(*argv, dest,	/* FILEUTILS_RECUR also prevents nasties like
113	FILEUTILS_RECUR | FILEUTILS_PRESERVE_STATUS) >= 0) &&	* "read from device and write contents to dst"
114	(remove_file(*argv, FILEUTILS_RECUR | FILEUTILS_FORCE) >= 0)) {	* 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;	goto RET_0;
123	}	}
124	}	}
125	RET_1:	RET_1:
126	status = 1;	status = 1;
127	}	}
128	RET_0:	RET_0:
129	if (dest != last) {	if (dest != last) {
130	free((void *) dest);	free((void *) dest);
131	}	}

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Legend: Removed from v.532   changed lines   Added in v.816