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 "compat_16.h"
44
45#define FILE_MODE	(S_IFREG|S_IRUSR|S_IWUSR|S_IRGRP|S_IROTH)
46#define TESTFILE	"testfile"
47#define SFILE		"slink_file"
48
49TCID_DEFINE(lchown01);
50int TST_TOTAL = 5;
51
52struct test_case_t {
53	char *desc;
54	uid_t user_id;
55	gid_t group_id;
56};
57
58static struct test_case_t test_cases[] = {
59	{"Change Owner/Group ids", 700, 701},
60	{"Change Owner id only", 702, -1},
61	{"Change Owner/Group ids", 703, 701},
62	{"Change Group id only", -1, 704},
63	{"Change Group/Group ids", 703, 705},
64	{"Change none", -1, -1},
65	{NULL, 0, 0}
66};
67
68static void setup(void);
69static void cleanup(void);
70
71int main(int argc, char *argv[])
72{
73	struct stat stat_buf;
74	int lc;
75	int i;
76
77	tst_parse_opts(argc, argv, NULL, NULL);
78
79	setup();
80
81	for (lc = 0; TEST_LOOPING(lc); lc++) {
82
83		tst_count = 0;
84
85		for (i = 0; test_cases[i].desc != NULL; i++) {
86			uid_t user_id = test_cases[i].user_id;
87			gid_t group_id = test_cases[i].group_id;
88			char *test_desc = test_cases[i].desc;
89
90			/*
91			 * Call lchown(2) with different user id and
92			 * group id (numeric values) to set it on
93			 * symlink of testfile.
94			 */
95			TEST(LCHOWN(cleanup, SFILE, user_id, group_id));
96
97			if (TEST_RETURN == -1) {
98				tst_resm(TFAIL,
99					 "lchown() Fails to %s, errno %d",
100					 test_desc, TEST_ERRNO);
101				continue;
102			}
103
104			if (lstat(SFILE, &stat_buf) < 0) {
105				tst_brkm(TFAIL, cleanup, "lstat(2) "
106					 "%s failed, errno %d",
107					 SFILE, TEST_ERRNO);
108			}
109
110			if (user_id == -1) {
111				if (i > 0)
112					user_id =
113					    test_cases[i - 1].user_id;
114				else
115					user_id = geteuid();
116			}
117
118			if (group_id == -1) {
119				if (i > 0)
120					group_id =
121					    test_cases[i - 1].group_id;
122				else
123					group_id = getegid();
124			}
125
126			/*
127			 * Check for expected Ownership ids
128			 * set on testfile.
129			 */
130			if ((stat_buf.st_uid != user_id) ||
131			    (stat_buf.st_gid != group_id)) {
132				tst_resm(TFAIL,
133					 "%s: incorrect ownership set, "
134					 "Expected %d %d", SFILE,
135					 user_id, group_id);
136			} else {
137				tst_resm(TPASS, "lchown() succeeds to "
138					 "%s of %s", test_desc, SFILE);
139			}
140		}
141	}
142
143	cleanup();
144	tst_exit();
145}
146
147static void setup(void)
148{
149	int fd;
150
151	tst_sig(NOFORK, DEF_HANDLER, cleanup);
152
153	tst_require_root();
154
155	TEST_PAUSE;
156	tst_tmpdir();
157
158	if ((fd = open(TESTFILE, O_RDWR | O_CREAT, FILE_MODE)) == -1) {
159		tst_brkm(TBROK, cleanup, "open failed");
160	}
161	if (close(fd) == -1) {
162		tst_brkm(TBROK | TERRNO, cleanup, "close failed");
163	}
164
165	if (symlink(TESTFILE, SFILE) < 0) {
166		tst_brkm(TBROK | TERRNO, cleanup, "symlink failed");
167	}
168}
169
170static void cleanup(void)
171{
172	tst_rmdir();
173}
174