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 816 by niro, Fri Apr 24 18:33:46 2009 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? */
11	/* BB_AUDIT GNU defects - unsupported long options. */	/* BB_AUDIT GNU defects - unsupported long options. */
12	/* http://www.opengroup.org/onlinepubs/007904975/utilities/chown.html */	/* http://www.opengroup.org/onlinepubs/007904975/utilities/chown.html */
13
14	#include "busybox.h"	#include "libbb.h"
15
16	static struct bb_uidgid_t ugid = { -1, -1 };	/* This is a NOEXEC applet. Be very careful! */
17
	static int (*chown_func)(const char *, uid_t, gid_t) = chown;
18
19	#define OPT_RECURSE (option_mask32 & 1)	#define OPT_STR     ("Rh" USE_DESKTOP("vcfLHP"))
20	#define OPT_NODEREF (option_mask32 & 2)	#define BIT_RECURSE 1
21	#define OPT_VERBOSE (USE_DESKTOP(option_mask32 & 4) SKIP_DESKTOP(0))	#define OPT_RECURSE (opt & 1)
22	#define OPT_CHANGED (USE_DESKTOP(option_mask32 & 8) SKIP_DESKTOP(0))	#define OPT_NODEREF (opt & 2)
23	#define OPT_QUIET   (USE_DESKTOP(option_mask32 & 0x10) SKIP_DESKTOP(0))	#define OPT_VERBOSE (USE_DESKTOP(opt & 0x04) SKIP_DESKTOP(0))
24	#define OPT_STR     ("Rh" USE_DESKTOP("vcf"))	#define OPT_CHANGED (USE_DESKTOP(opt & 0x08) SKIP_DESKTOP(0))
25		#define OPT_QUIET   (USE_DESKTOP(opt & 0x10) SKIP_DESKTOP(0))
26	/* TODO:	/* POSIX options
	* -H if a command line argument is a symbolic link to a directory, traverse it
27	* -L traverse every symbolic link to a directory encountered	* -L traverse every symbolic link to a directory encountered
28		* -H if a command line argument is a symbolic link to a directory, traverse it
29	* -P do not traverse any symbolic links (default)	* -P do not traverse any symbolic links (default)
30	*/	* We do not conform to the following:
31		* "Specifying more than one of -H, -L, and -P is not an error.
32		* The last option specified shall determine the behavior of the utility." */
33		/* -L */
34		#define BIT_TRAVERSE 0x20
35		#define OPT_TRAVERSE (USE_DESKTOP(opt & BIT_TRAVERSE) SKIP_DESKTOP(0))
36		/* -H or -L */
37		#define BIT_TRAVERSE_TOP (0x20|0x40)
38		#define OPT_TRAVERSE_TOP (USE_DESKTOP(opt & BIT_TRAVERSE_TOP) SKIP_DESKTOP(0))
39
40		typedef int (*chown_fptr)(const char *, uid_t, gid_t);
41
42		struct param_t {
43		struct bb_uidgid_t ugid;
44		chown_fptr chown_func;
45		};
46
47	static int fileAction(const char *fileName, struct stat *statbuf,	static int FAST_FUNC fileAction(const char *fileName, struct stat *statbuf,
48	void ATTRIBUTE_UNUSED *junk, int depth)	void *vparam, int depth UNUSED_PARAM)
49	{	{
50	// TODO: -H/-L/-P	#define param  (*(struct param_t*)vparam)
51	// if (depth ... && S_ISLNK(statbuf->st_mode)) ....	#define opt option_mask32
52		uid_t u = (param.ugid.uid == (uid_t)-1) ? statbuf->st_uid : param.ugid.uid;
53		gid_t g = (param.ugid.gid == (gid_t)-1) ? statbuf->st_gid : param.ugid.gid;
54
55	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)
	) {
56	if (OPT_VERBOSE	if (OPT_VERBOSE
57	|| (OPT_CHANGED && (statbuf->st_uid != ugid.uid || statbuf->st_gid != ugid.gid))	|| (OPT_CHANGED && (statbuf->st_uid != u || statbuf->st_gid != g))
58	) {	) {
59	printf("changed ownership of '%s' to %u:%u\n",	printf("changed ownership of '%s' to %u:%u\n",
60	fileName, ugid.uid, ugid.gid);	fileName, (unsigned)u, (unsigned)g);
61	}	}
62	return TRUE;	return TRUE;
63	}	}
64	if (!OPT_QUIET)	if (!OPT_QUIET)
65	bb_perror_msg("%s", fileName); /* A filename can have % in it... */	bb_simple_perror_msg(fileName); /* A filename can have % in it... */
66	return FALSE;	return FALSE;
67		#undef opt
68		#undef param
69	}	}
70
71	int chown_main(int argc, char **argv)	int chown_main(int argc UNUSED_PARAM, char **argv)
72	{	{
	char *groupName;
73	int retval = EXIT_SUCCESS;	int retval = EXIT_SUCCESS;
74		int opt, flags;
75		struct param_t param;
76
77		param.ugid.uid = -1;
78		param.ugid.gid = -1;
79		param.chown_func = chown;
80
81	opt_complementary = "-2";	opt_complementary = "-2";
82	getopt32(argc, argv, OPT_STR);	opt = getopt32(argv, OPT_STR);
83	argv += optind;	argv += optind;
84
85	if (OPT_NODEREF) chown_func = lchown;	/* This matches coreutils behavior (almost - see below) */
86		if (OPT_NODEREF
87	/* First, check if there is a group name here */	/* || (OPT_RECURSE && !OPT_TRAVERSE_TOP): */
88	groupName = strchr(*argv, '.'); /* deprecated? */	USE_DESKTOP( || (opt & (BIT_RECURSE|BIT_TRAVERSE_TOP)) == BIT_RECURSE)
89	if (!groupName)	) {
90	groupName = strchr(*argv, ':');	param.chown_func = lchown;
	else
	*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);
91	}	}
92
93		flags = ACTION_DEPTHFIRST; /* match coreutils order */
94		if (OPT_RECURSE)
95		flags |= ACTION_RECURSE;
96		if (OPT_TRAVERSE_TOP)
97		flags |= ACTION_FOLLOWLINKS_L0; /* -H/-L: follow links on depth 0 */
98		if (OPT_TRAVERSE)
99		flags |= ACTION_FOLLOWLINKS; /* follow links if -L */
100
101		parse_chown_usergroup_or_die(&param.ugid, argv[0]);
102
103	/* Ok, ready to do the deed now */	/* Ok, ready to do the deed now */
104	argv++;	argv++;
105	do {	do {
106	if (!recursive_action(*argv,	if (!recursive_action(*argv,
107	OPT_RECURSE, // recurse	flags,          /* flags */
108	FALSE,          // follow links: TODO: -H/-L/-P	fileAction,     /* file action */
109	FALSE,          // depth first	fileAction,     /* dir action */
110	fileAction,     // file action	&param,         /* user data */
111	fileAction,     // dir action	0)              /* depth */
	NULL,           // user data
	0)              // depth
112	) {	) {
113	retval = EXIT_FAILURE;	retval = EXIT_FAILURE;
114	}	}
#	Line 101  int chown_main(int argc, char **argv)	Line 116  int chown_main(int argc, char **argv)
116
117	return retval;	return retval;
118	}	}
119
120		/*
121		Testcase. Run in empty directory.
122
123		#!/bin/sh
124		t1="/tmp/busybox chown"
125		t2="/usr/bin/chown"
126		create() {
127		rm -rf $1; mkdir $1
128		(
129		cd $1 || exit 1
130		mkdir dir dir2
131		>up
132		>file
133		>dir/file
134		>dir2/file
135		ln -s dir linkdir
136		ln -s file linkfile
137		ln -s ../up dir/linkup
138		ln -s ../dir2 dir/linkupdir2
139		)
140		chown -R 0:0 $1
141		}
142		tst() {
143		create test1
144		create test2
145		echo "[$1]" >>test1.out
146		echo "[$1]" >>test2.out
147		(cd test1; $t1 $1) >>test1.out 2>&1
148		(cd test2; $t2 $1) >>test2.out 2>&1
149		(cd test1; ls -lnR) >out1
150		(cd test2; ls -lnR) >out2
151		echo "chown $1" >out.diff
152		if ! diff -u out1 out2 >>out.diff; then exit 1; fi
153		rm out.diff
154		}
155		tst_for_each() {
156		tst "$1 1:1 file"
157		tst "$1 1:1 dir"
158		tst "$1 1:1 linkdir"
159		tst "$1 1:1 linkfile"
160		}
161		echo "If script produced 'out.diff' file, then at least one testcase failed"
162		>test1.out
163		>test2.out
164		# These match coreutils 6.8:
165		tst_for_each "-v"
166		tst_for_each "-vR"
167		tst_for_each "-vRP"
168		tst_for_each "-vRL"
169		tst_for_each "-vRH"
170		tst_for_each "-vh"
171		tst_for_each "-vhR"
172		tst_for_each "-vhRP"
173		tst_for_each "-vhRL"
174		tst_for_each "-vhRH"
175		# Fix `name' in coreutils output
176		sed 's/`/'"'"'/g' -i test2.out
177		# Compare us with coreutils output
178		diff -u test1.out test2.out
179
180		*/

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