busybox/coreutils/cp.c

/* 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.
 */

/* http://www.opengroup.org/onlinepubs/007904975/utilities/cp.html */

/* Mar 16, 2003      Manuel Novoa III   (mjn3@codepoet.org)
 *
 * Size reduction.
 */

#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;
	enum {
		OPT_a = 1 << (sizeof(FILEUTILS_CP_OPTSTR)-1),
		OPT_r = 1 << (sizeof(FILEUTILS_CP_OPTSTR)),
		OPT_P = 1 << (sizeof(FILEUTILS_CP_OPTSTR)+1),
		OPT_H = 1 << (sizeof(FILEUTILS_CP_OPTSTR)+2),
		OPT_L = 1 << (sizeof(FILEUTILS_CP_OPTSTR)+3),
	};

	// Soft- and hardlinking don't mix
	// -P and -d are the same (-P is POSIX, -d is GNU)
	// -r and -R are the same
	// -a = -pdR
	opt_complementary = "?:l--s:s--l:Pd:rR:apdR";
	flags = getopt32(argc, argv, FILEUTILS_CP_OPTSTR "arPHL");
	/* 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 & OPT_L) ...
	if (flags & OPT_H) ... // deref command-line params only
	*/

	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)
			return EXIT_FAILURE;
		d_flags = cp_mv_stat(last, &dest_stat);
		if (d_flags < 0)
			return 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)
		) {
			/* ...do a simple copy.  */
			dest = xstrdup(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;
		}
		free((void*)dest);
	} while (*++argv != last);

	return status;
}
1	/* vi: set sw=4 ts=4: */
2	/*
3	* Mini cp implementation for busybox
4	*
5	* Copyright (C) 2000 by Matt Kraai <kraai@alumni.carnegiemellon.edu>
6	*
7	* Licensed under GPL v2 or later, see file LICENSE in this tarball for details.
8	*/
9
10	/* http://www.opengroup.org/onlinepubs/007904975/utilities/cp.html */
11
12	/* Mar 16, 2003 Manuel Novoa III (mjn3@codepoet.org)
13	*
14	* Size reduction.
15	*/
16
17	#include "busybox.h"
18	#include "libcoreutils/coreutils.h"
19
20	int cp_main(int argc, char **argv)
21	{
22	struct stat source_stat;
23	struct stat dest_stat;
24	const char *last;
25	const char *dest;
26	int s_flags;
27	int d_flags;
28	int flags;
29	int status = 0;
30	enum {
31	OPT_a = 1 << (sizeof(FILEUTILS_CP_OPTSTR)-1),
32	OPT_r = 1 << (sizeof(FILEUTILS_CP_OPTSTR)),
33	OPT_P = 1 << (sizeof(FILEUTILS_CP_OPTSTR)+1),
34	OPT_H = 1 << (sizeof(FILEUTILS_CP_OPTSTR)+2),
35	OPT_L = 1 << (sizeof(FILEUTILS_CP_OPTSTR)+3),
36	};
37
38	// Soft- and hardlinking don't mix
39	// -P and -d are the same (-P is POSIX, -d is GNU)
40	// -r and -R are the same
41	// -a = -pdR
42	opt_complementary = "?:l--s:s--l:Pd:rR:apdR";
43	flags = getopt32(argc, argv, FILEUTILS_CP_OPTSTR "arPHL");
44	/* Default behavior of cp is to dereference, so we don't have to do
45	* anything special when we are given -L.
46	* The behavior of -H is almost like -L, but not quite, so let's
47	* just ignore it too for fun.
48	if (flags & OPT_L) ...
49	if (flags & OPT_H) ... // deref command-line params only
50	*/
51
52	flags ^= FILEUTILS_DEREFERENCE; /* The sense of this flag was reversed. */
53
54	if (optind + 2 > argc) {
55	bb_show_usage();
56	}
57
58	last = argv[argc - 1];
59	argv += optind;
60
61	/* If there are only two arguments and... */
62	if (optind + 2 == argc) {
63	s_flags = cp_mv_stat2(*argv, &source_stat,
64	(flags & FILEUTILS_DEREFERENCE) ? stat : lstat);
65	if (s_flags < 0)
66	return EXIT_FAILURE;
67	d_flags = cp_mv_stat(last, &dest_stat);
68	if (d_flags < 0)
69	return EXIT_FAILURE;
70
71	/* ...if neither is a directory or... */
72	if ( !((s_flags \| d_flags) & 2) \|\|
73	/* ...recursing, the 1st is a directory, and the 2nd doesn't exist... */
74	((flags & FILEUTILS_RECUR) && (s_flags & 2) && !d_flags)
75	) {
76	/* ...do a simple copy. */
77	dest = xstrdup(last);
78	goto DO_COPY; /* Note: optind+2==argc implies argv[1]==last below. */
79	}
80	}
81
82	do {
83	dest = concat_path_file(last, bb_get_last_path_component(*argv));
84	DO_COPY:
85	if (copy_file(*argv, dest, flags) < 0) {
86	status = 1;
87	}
88	free((void*)dest);
89	} while (*++argv != last);
90
91	return status;
92	}