1/*
2 * Copyright (c) International Business Machines  Corp., 2001
3 *
4 * This program is free software;  you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY;  without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See
12 * the GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program;  if not, write to the Free Software
16 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
17 */
18
19/*
20 * Test Description:
21 *  Verify that, lchown(2) succeeds to change the owner and group of a file
22 *  specified by path to any numeric owner(uid)/group(gid) values when invoked
23 *  by super-user.
24 *
25 * Expected Result:
26 *  lchown(2) should return 0 and the ownership set on the file should match
27 *  the numeric values contained in owner and group respectively.
28 *
29 * HISTORY
30 *	07/2001 Ported by Wayne Boyer
31 *	11/2010 Code cleanup by Cyril Hrubis chrubis@suse.cz
32 */
33
34#include <stdio.h>
35#include <sys/types.h>
36#include <sys/stat.h>
37#include <fcntl.h>
38#include <errno.h>
39#include <string.h>
40#include <signal.h>
41
42#include "test.h"
43#include "safe_macros.h"
44#include "compat_16.h"
45
46#define FILE_MODE	(S_IFREG|S_IRUSR|S_IWUSR|S_IRGRP|S_IROTH)
47#define TESTFILE	"testfile"
48#define SFILE		"slink_file"
49
50TCID_DEFINE(lchown01);
51int TST_TOTAL = 5;
52
53struct test_case_t {
54	char *desc;
55	uid_t user_id;
56	gid_t group_id;
57};
58
59static struct test_case_t test_cases[] = {
60	{"Change Owner/Group ids", 700, 701},
61	{"Change Owner id only", 702, -1},
62	{"Change Owner/Group ids", 703, 701},
63	{"Change Group id only", -1, 704},
64	{"Change Group/Group ids", 703, 705},
65	{"Change none", -1, -1},
66	{NULL, 0, 0}
67};
68
69static void setup(void);
70static void cleanup(void);
71
72int main(int argc, char *argv[])
73{
74	struct stat stat_buf;
75	int lc;
76	int i;
77
78	tst_parse_opts(argc, argv, NULL, NULL);
79
80	setup();
81
82	for (lc = 0; TEST_LOOPING(lc); lc++) {
83
84		tst_count = 0;
85
86		for (i = 0; test_cases[i].desc != NULL; i++) {
87			uid_t user_id = test_cases[i].user_id;
88			gid_t group_id = test_cases[i].group_id;
89			char *test_desc = test_cases[i].desc;
90
91			/*
92			 * Call lchown(2) with different user id and
93			 * group id (numeric values) to set it on
94			 * symlink of testfile.
95			 */
96			TEST(LCHOWN(cleanup, SFILE, user_id, group_id));
97
98			if (TEST_RETURN == -1) {
99				tst_resm(TFAIL,
100					 "lchown() Fails to %s, errno %d",
101					 test_desc, TEST_ERRNO);
102				continue;
103			}
104
105			if (lstat(SFILE, &stat_buf) < 0) {
106				tst_brkm(TFAIL, cleanup, "lstat(2) "
107					 "%s failed, errno %d",
108					 SFILE, TEST_ERRNO);
109			}
110
111			if (user_id == -1) {
112				if (i > 0)
113					user_id =
114					    test_cases[i - 1].user_id;
115				else
116					user_id = geteuid();
117			}
118
119			if (group_id == -1) {
120				if (i > 0)
121					group_id =
122					    test_cases[i - 1].group_id;
123				else
124					group_id = getegid();
125			}
126
127			/*
128			 * Check for expected Ownership ids
129			 * set on testfile.
130			 */
131			if ((stat_buf.st_uid != user_id) ||
132			    (stat_buf.st_gid != group_id)) {
133				tst_resm(TFAIL,
134					 "%s: incorrect ownership set, "
135					 "Expected %d %d", SFILE,
136					 user_id, group_id);
137			} else {
138				tst_resm(TPASS, "lchown() succeeds to "
139					 "%s of %s", test_desc, SFILE);
140			}
141		}
142	}
143
144	cleanup();
145	tst_exit();
146}
147
148static void setup(void)
149{
150	int fd;
151
152	tst_sig(NOFORK, DEF_HANDLER, cleanup);
153
154	tst_require_root();
155
156	TEST_PAUSE;
157	tst_tmpdir();
158
159	if ((fd = open(TESTFILE, O_RDWR | O_CREAT, FILE_MODE)) == -1) {
160		tst_brkm(TBROK, cleanup, "open failed");
161	}
162	SAFE_CLOSE(cleanup, fd);
163
164	SAFE_SYMLINK(cleanup, TESTFILE, SFILE);
165}
166
167static void cleanup(void)
168{
169	tst_rmdir();
170}
171