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

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	revision 532 by niro, Sat Sep 1 22:45:15 2007 UTC	revision 1123 by niro, Wed Aug 18 21:56:57 2010 UTC
#	Line 7	Line 7
7	* 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.
8	*/	*/
9
10	/* BB_AUDIT SUSv3 defects - unsupported options -H, -L, and -P. */	/* BB_AUDIT SUSv3 defects - none? */
	/* BB_AUDIT GNU defects - unsupported long options. */
11	/* http://www.opengroup.org/onlinepubs/007904975/utilities/chown.html */	/* http://www.opengroup.org/onlinepubs/007904975/utilities/chown.html */
12
13	#include "busybox.h"	#include "libbb.h"
14
15	static struct bb_uidgid_t ugid = { -1, -1 };	/* This is a NOEXEC applet. Be very careful! */
16
	static int (*chown_func)(const char *, uid_t, gid_t) = chown;
17
18	#define OPT_RECURSE (option_mask32 & 1)	#define OPT_STR     ("Rh" IF_DESKTOP("vcfLHP"))
19	#define OPT_NODEREF (option_mask32 & 2)	#define BIT_RECURSE 1
20	#define OPT_VERBOSE (USE_DESKTOP(option_mask32 & 4) SKIP_DESKTOP(0))	#define OPT_RECURSE (opt & 1)
21	#define OPT_CHANGED (USE_DESKTOP(option_mask32 & 8) SKIP_DESKTOP(0))	#define OPT_NODEREF (opt & 2)
22	#define OPT_QUIET   (USE_DESKTOP(option_mask32 & 0x10) SKIP_DESKTOP(0))	#define OPT_VERBOSE (IF_DESKTOP(opt & 0x04) IF_NOT_DESKTOP(0))
23	#define OPT_STR     ("Rh" USE_DESKTOP("vcf"))	#define OPT_CHANGED (IF_DESKTOP(opt & 0x08) IF_NOT_DESKTOP(0))
24		#define OPT_QUIET   (IF_DESKTOP(opt & 0x10) IF_NOT_DESKTOP(0))
25	/* TODO:	/* POSIX options
	* -H if a command line argument is a symbolic link to a directory, traverse it
26	* -L traverse every symbolic link to a directory encountered	* -L traverse every symbolic link to a directory encountered
27		* -H if a command line argument is a symbolic link to a directory, traverse it
28	* -P do not traverse any symbolic links (default)	* -P do not traverse any symbolic links (default)
29	*/	* We do not conform to the following:
30		* "Specifying more than one of -H, -L, and -P is not an error.
31		* The last option specified shall determine the behavior of the utility." */
32		/* -L */
33		#define BIT_TRAVERSE 0x20
34		#define OPT_TRAVERSE (IF_DESKTOP(opt & BIT_TRAVERSE) IF_NOT_DESKTOP(0))
35		/* -H or -L */
36		#define BIT_TRAVERSE_TOP (0x20|0x40)
37		#define OPT_TRAVERSE_TOP (IF_DESKTOP(opt & BIT_TRAVERSE_TOP) IF_NOT_DESKTOP(0))
38
39		#if ENABLE_FEATURE_CHOWN_LONG_OPTIONS
40		static const char chown_longopts[] ALIGN1 =
41		"recursive\0"        No_argument   "R"
42		"dereference\0"      No_argument   "\xff"
43		"no-dereference\0"   No_argument   "h"
44		# if ENABLE_DESKTOP
45		"changes\0"          No_argument   "c"
46		"silent\0"           No_argument   "f"
47		"quiet\0"            No_argument   "f"
48		"verbose\0"          No_argument   "v"
49		# endif
50		;
51		#endif
52
53		typedef int (*chown_fptr)(const char *, uid_t, gid_t);
54
55		struct param_t {
56		struct bb_uidgid_t ugid;
57		chown_fptr chown_func;
58		};
59
60	static int fileAction(const char *fileName, struct stat *statbuf,	static int FAST_FUNC fileAction(const char *fileName, struct stat *statbuf,
61	void ATTRIBUTE_UNUSED *junk, int depth)	void *vparam, int depth UNUSED_PARAM)
62	{	{
63	// TODO: -H/-L/-P	#define param  (*(struct param_t*)vparam)
64	// if (depth ... && S_ISLNK(statbuf->st_mode)) ....	#define opt option_mask32
65		uid_t u = (param.ugid.uid == (uid_t)-1L) ? statbuf->st_uid : param.ugid.uid;
66		gid_t g = (param.ugid.gid == (gid_t)-1L) ? statbuf->st_gid : param.ugid.gid;
67
68	if (!chown_func(fileName,	if (param.chown_func(fileName, u, g) == 0) {
	(ugid.uid == (uid_t)-1) ? statbuf->st_uid : ugid.uid,
	(ugid.gid == (gid_t)-1) ? statbuf->st_gid : ugid.gid)
	) {
69	if (OPT_VERBOSE	if (OPT_VERBOSE
70	|| (OPT_CHANGED && (statbuf->st_uid != ugid.uid || statbuf->st_gid != ugid.gid))	|| (OPT_CHANGED && (statbuf->st_uid != u || statbuf->st_gid != g))
71	) {	) {
72	printf("changed ownership of '%s' to %u:%u\n",	printf("changed ownership of '%s' to %u:%u\n",
73	fileName, ugid.uid, ugid.gid);	fileName, (unsigned)u, (unsigned)g);
74	}	}
75	return TRUE;	return TRUE;
76	}	}
77	if (!OPT_QUIET)	if (!OPT_QUIET)
78	bb_perror_msg("%s", fileName); /* A filename can have % in it... */	bb_simple_perror_msg(fileName);
79	return FALSE;	return FALSE;
80		#undef opt
81		#undef param
82	}	}
83
84	int chown_main(int argc, char **argv)	int chown_main(int argc UNUSED_PARAM, char **argv)
85	{	{
	char *groupName;
86	int retval = EXIT_SUCCESS;	int retval = EXIT_SUCCESS;
87		int opt, flags;
88		struct param_t param;
89
90		/* Just -1 might not work: uid_t may be unsigned long */
91		param.ugid.uid = -1L;
92		param.ugid.gid = -1L;
93
94		#if ENABLE_FEATURE_CHOWN_LONG_OPTIONS
95		applet_long_options = chown_longopts;
96		#endif
97	opt_complementary = "-2";	opt_complementary = "-2";
98	getopt32(argc, argv, OPT_STR);	opt = getopt32(argv, OPT_STR);
99	argv += optind;	argv += optind;
100
101	if (OPT_NODEREF) chown_func = lchown;	/* This matches coreutils behavior (almost - see below) */
102		param.chown_func = chown;
103	/* First, check if there is a group name here */	if (OPT_NODEREF
104	groupName = strchr(*argv, '.'); /* deprecated? */	/* || (OPT_RECURSE && !OPT_TRAVERSE_TOP): */
105	if (!groupName)	IF_DESKTOP( || (opt & (BIT_RECURSE|BIT_TRAVERSE_TOP)) == BIT_RECURSE)
106	groupName = strchr(*argv, ':');	) {
107	else	param.chown_func = lchown;
	*groupName = ':'; /* replace '.' with ':' */
	/* First, try parsing "user[:[group]]" */
	if (!groupName) { /* "user" */
	ugid.uid = get_ug_id(*argv, xuname2uid);
	} else if (groupName == *argv) { /* ":group" */
	ugid.gid = get_ug_id(groupName + 1, xgroup2gid);
	} else {
	if (!groupName[1]) /* "user:" */
	*groupName = '\0';
	if (!get_uidgid(&ugid, *argv, 1))
	bb_error_msg_and_die("unknown user/group %s", *argv);
108	}	}
109
110		flags = ACTION_DEPTHFIRST; /* match coreutils order */
111		if (OPT_RECURSE)
112		flags |= ACTION_RECURSE;
113		if (OPT_TRAVERSE_TOP)
114		flags |= ACTION_FOLLOWLINKS_L0; /* -H/-L: follow links on depth 0 */
115		if (OPT_TRAVERSE)
116		flags |= ACTION_FOLLOWLINKS; /* follow links if -L */
117
118		parse_chown_usergroup_or_die(&param.ugid, argv[0]);
119
120	/* Ok, ready to do the deed now */	/* Ok, ready to do the deed now */
121	argv++;	while (*++argv) {
	do {
122	if (!recursive_action(*argv,	if (!recursive_action(*argv,
123	OPT_RECURSE, // recurse	flags,          /* flags */
124	FALSE,          // follow links: TODO: -H/-L/-P	fileAction,     /* file action */
125	FALSE,          // depth first	fileAction,     /* dir action */
126	fileAction,     // file action	&param,         /* user data */
127	fileAction,     // dir action	0)              /* depth */
	NULL,           // user data
	0)              // depth
128	) {	) {
129	retval = EXIT_FAILURE;	retval = EXIT_FAILURE;
130	}	}
131	} while (*++argv);	}
132
133	return retval;	return retval;
134	}	}
135
136		/*
137		Testcase. Run in empty directory.
138
139		#!/bin/sh
140		t1="/tmp/busybox chown"
141		t2="/usr/bin/chown"
142		create() {
143		rm -rf $1; mkdir $1
144		(
145		cd $1 || exit 1
146		mkdir dir dir2
147		>up
148		>file
149		>dir/file
150		>dir2/file
151		ln -s dir linkdir
152		ln -s file linkfile
153		ln -s ../up dir/linkup
154		ln -s ../dir2 dir/linkupdir2
155		)
156		chown -R 0:0 $1
157		}
158		tst() {
159		create test1
160		create test2
161		echo "[$1]" >>test1.out
162		echo "[$1]" >>test2.out
163		(cd test1; $t1 $1) >>test1.out 2>&1
164		(cd test2; $t2 $1) >>test2.out 2>&1
165		(cd test1; ls -lnR) >out1
166		(cd test2; ls -lnR) >out2
167		echo "chown $1" >out.diff
168		if ! diff -u out1 out2 >>out.diff; then exit 1; fi
169		rm out.diff
170		}
171		tst_for_each() {
172		tst "$1 1:1 file"
173		tst "$1 1:1 dir"
174		tst "$1 1:1 linkdir"
175		tst "$1 1:1 linkfile"
176		}
177		echo "If script produced 'out.diff' file, then at least one testcase failed"
178		>test1.out
179		>test2.out
180		# These match coreutils 6.8:
181		tst_for_each "-v"
182		tst_for_each "-vR"
183		tst_for_each "-vRP"
184		tst_for_each "-vRL"
185		tst_for_each "-vRH"
186		tst_for_each "-vh"
187		tst_for_each "-vhR"
188		tst_for_each "-vhRP"
189		tst_for_each "-vhRL"
190		tst_for_each "-vhRH"
191		# Fix `name' in coreutils output
192		sed 's/`/'"'"'/g' -i test2.out
193		# Compare us with coreutils output
194		diff -u test1.out test2.out
195
196		*/

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