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

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	revision 815 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 cp implementation for busybox	* Mini cp 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 GPL v2 or later, see file LICENSE in this tarball for details.	* Licensed under GPL v2 or later, see file LICENSE in this tarball for details.
9	*/	*/
#	Line 14	Line 15
15	* Size reduction.	* Size reduction.
16	*/	*/
17
18	#include "busybox.h"	#include "libbb.h"
19	#include "libcoreutils/coreutils.h"	#include "libcoreutils/coreutils.h"
20
21		/* This is a NOEXEC applet. Be very careful! */
22
23
24		int cp_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
25	int cp_main(int argc, char **argv)	int cp_main(int argc, char **argv)
26	{	{
27	struct stat source_stat;	struct stat source_stat;
#	Line 32  int cp_main(int argc, char **argv)	Line 37  int cp_main(int argc, char **argv)
37	OPT_r = 1 << (sizeof(FILEUTILS_CP_OPTSTR)),	OPT_r = 1 << (sizeof(FILEUTILS_CP_OPTSTR)),
38	OPT_P = 1 << (sizeof(FILEUTILS_CP_OPTSTR)+1),	OPT_P = 1 << (sizeof(FILEUTILS_CP_OPTSTR)+1),
39	OPT_H = 1 << (sizeof(FILEUTILS_CP_OPTSTR)+2),	OPT_H = 1 << (sizeof(FILEUTILS_CP_OPTSTR)+2),
	OPT_L = 1 << (sizeof(FILEUTILS_CP_OPTSTR)+3),
40	};	};
41
42	// Soft- and hardlinking don't mix	// Need at least two arguments
43		// Soft- and hardlinking doesn't mix
44	// -P and -d are the same (-P is POSIX, -d is GNU)	// -P and -d are the same (-P is POSIX, -d is GNU)
45	// -r and -R are the same	// -r and -R are the same
46		// -R (and therefore -r) turns on -d (coreutils does this)
47	// -a = -pdR	// -a = -pdR
48	opt_complementary = "?:l--s:s--l:Pd:rR:apdR";	opt_complementary = "-2:l--s:s--l:Pd:rRd:Rd:apdR:HL";
49	flags = getopt32(argc, argv, FILEUTILS_CP_OPTSTR "arPHL");	flags = getopt32(argv, FILEUTILS_CP_OPTSTR "arPH");
50	/* Default behavior of cp is to dereference, so we don't have to do	argc -= optind;
51	* anything special when we are given -L.	argv += optind;
52	* The behavior of -H is *almost* like -L, but not quite, so let's	flags ^= FILEUTILS_DEREFERENCE; /* the sense of this flag was reversed */
53	* just ignore it too for fun.	/* coreutils 6.9 compat:
54	if (flags & OPT_L) ...	* by default, "cp" derefs symlinks (creates regular dest files),
55		* but "cp -R" does not. We switch off deref if -r or -R (see above).
56		* However, "cp -RL" must still deref symlinks: */
57		if (flags & FILEUTILS_DEREF_SOFTLINK) /* -L */
58		flags |= FILEUTILS_DEREFERENCE;
59		/* The behavior of -H is *almost* like -L, but not quite, so let's
60		* just ignore it too for fun. TODO.
61	if (flags & OPT_H) ... // deref command-line params only	if (flags & OPT_H) ... // deref command-line params only
62	*/	*/
63
64	flags ^= FILEUTILS_DEREFERENCE; /* The sense of this flag was reversed. */	#if ENABLE_SELINUX
65		if (flags & FILEUTILS_PRESERVE_SECURITY_CONTEXT) {
66	if (optind + 2 > argc) {	selinux_or_die();
	bb_show_usage();
67	}	}
68		#endif
69
70	last = argv[argc - 1];	last = argv[argc - 1];
	argv += optind;
71	/* If there are only two arguments and...  */	/* If there are only two arguments and...  */
72	if (optind + 2 == argc) {	if (argc == 2) {
73	s_flags = cp_mv_stat2(*argv, &source_stat,	s_flags = cp_mv_stat2(*argv, &source_stat,
74	(flags & FILEUTILS_DEREFERENCE) ? stat : lstat);	(flags & FILEUTILS_DEREFERENCE) ? stat : lstat);
75	if (s_flags < 0)	if (s_flags < 0)
#	Line 74  int cp_main(int argc, char **argv)	Line 84  int cp_main(int argc, char **argv)
84	((flags & FILEUTILS_RECUR) && (s_flags & 2) && !d_flags)	((flags & FILEUTILS_RECUR) && (s_flags & 2) && !d_flags)
85	) {	) {
86	/* ...do a simple copy.  */	/* ...do a simple copy.  */
87	dest = xstrdup(last);	dest = last;
88	goto DO_COPY; /* Note: optind+2==argc implies argv[1]==last below. */	goto DO_COPY; /* NB: argc==2 -> *++argv==last */
89	}	}
90	}	}
91
92	do {	while (1) {
93	dest = concat_path_file(last, bb_get_last_path_component(*argv));	dest = concat_path_file(last, bb_get_last_path_component_strip(*argv));
94	DO_COPY:	DO_COPY:
95	if (copy_file(*argv, dest, flags) < 0) {	if (copy_file(*argv, dest, flags) < 0) {
96	status = 1;	status = 1;
97	}	}
98		if (*++argv == last) {
99		/* possibly leaking dest... */
100		break;
101		}
102	free((void*)dest);	free((void*)dest);
103	} while (*++argv != last);	}
104
105		/* Exit. We are NOEXEC, not NOFORK. We do exit at the end of main() */
106	return status;	return status;
107	}	}

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Legend: Removed from v.815   changed lines   Added in v.816