1/*
2 * Copyright (c) 2015 Cedric Hnyda <chnyda@suse.com>
3 *
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public License as
6 * published by the Free Software Foundation; either version 2 of
7 * the License, or (at your option) any later version.
8 *
9 * This program is distributed in the hope that it would be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
12 * 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 the Free Software Foundation,
16 * Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
17 */
18
19 /* Description:
20 *   Verify that:
21 *   1) renameat2(2) returns -1 and sets errno to EEXIST because newpath
22 *		already exists and the flag RENAME_NOREPLACE is used.
23 *   2) renameat2(2) returns 0.
24 *   3) renameat2(2) returns -1 and sets errno to ENOENT because the flag
25 *		RENAME_EXCHANGE is used and newpath does not exist.
26 *   4) renameat2(2) returns 0 because the flag RENAME_NOREPLACE is used,
27 *		both olddirfd and newdirfd are valid and oldpath exists and
28 *		newpath does not exist.
29 *   5) renameat2(2) returns -1 and sets errno to EINVAL because
30 *		RENAME_NOREPLACE and RENAME_EXCHANGE are used together
31 *   6) renameat2(2) returns -1 and sets errno to EINVAL because
32 *		RENAME_WHITEOUT and RENAME_EXCHANGE are used together
33 */
34
35#define _GNU_SOURCE
36
37#include "test.h"
38#include "safe_macros.h"
39#include "lapi/fcntl.h"
40#include "renameat2.h"
41
42#define TEST_DIR "test_dir/"
43#define TEST_DIR2 "test_dir2/"
44
45#define TEST_FILE "test_file"
46#define TEST_FILE2 "test_file2"
47#define TEST_FILE3 "test_file3"
48#define NON_EXIST "non_exist"
49
50char *TCID = "renameat201";
51
52static int olddirfd;
53static int newdirfd;
54static long fs_type;
55
56static struct test_case {
57	int *olddirfd;
58	const char *oldpath;
59	int *newdirfd;
60	const char *newpath;
61	int flags;
62	int exp_errno;
63} test_cases[] = {
64	{&olddirfd, TEST_FILE, &newdirfd, TEST_FILE2, RENAME_NOREPLACE, EEXIST},
65	{&olddirfd, TEST_FILE, &newdirfd, TEST_FILE2, RENAME_EXCHANGE, 0},
66	{&olddirfd, TEST_FILE, &newdirfd, NON_EXIST, RENAME_EXCHANGE, ENOENT},
67	{&olddirfd, TEST_FILE, &newdirfd, TEST_FILE3, RENAME_NOREPLACE, 0},
68	{&olddirfd, TEST_FILE, &newdirfd, TEST_FILE2, RENAME_NOREPLACE
69				| RENAME_EXCHANGE, EINVAL},
70	{&olddirfd, TEST_FILE, &newdirfd, TEST_FILE2, RENAME_WHITEOUT
71				| RENAME_EXCHANGE, EINVAL}
72};
73
74int TST_TOTAL = ARRAY_SIZE(test_cases);
75
76static void setup(void);
77static void cleanup(void);
78static void renameat2_verify(const struct test_case *test);
79
80
81int main(int ac, char **av)
82{
83	int i;
84	int lc;
85
86	tst_parse_opts(ac, av, NULL, NULL);
87
88	setup();
89
90	for (lc = 0; lc < TEST_LOOPING(lc); lc++) {
91		tst_count = 0;
92
93		for (i = 0; i < TST_TOTAL; i++)
94			renameat2_verify(&test_cases[i]);
95	}
96
97	cleanup();
98	tst_exit();
99}
100
101static void setup(void)
102{
103	if ((tst_kvercmp(3, 15, 0)) < 0) {
104		tst_brkm(TCONF, NULL,
105			"This test can only run on kernels that are 3.15. and higher");
106	}
107
108	tst_tmpdir();
109
110	fs_type = tst_fs_type(cleanup, ".");
111
112	SAFE_MKDIR(cleanup, TEST_DIR, 0700);
113	SAFE_MKDIR(cleanup, TEST_DIR2, 0700);
114
115	SAFE_TOUCH(cleanup, TEST_DIR TEST_FILE, 0600, NULL);
116	SAFE_TOUCH(cleanup, TEST_DIR2 TEST_FILE2, 0600, NULL);
117	SAFE_TOUCH(cleanup, TEST_DIR TEST_FILE3, 0600, NULL);
118
119	olddirfd = SAFE_OPEN(cleanup, TEST_DIR, O_DIRECTORY);
120	newdirfd = SAFE_OPEN(cleanup, TEST_DIR2, O_DIRECTORY);
121}
122
123static void cleanup(void)
124{
125	if (olddirfd > 0 && close(olddirfd) < 0)
126		tst_resm(TWARN | TERRNO, "close olddirfd failed");
127
128	if (newdirfd > 0 && close(newdirfd) < 0)
129		tst_resm(TWARN | TERRNO, "close newdirfd failed");
130
131	tst_rmdir();
132
133}
134
135static void renameat2_verify(const struct test_case *test)
136{
137	TEST(renameat2(*(test->olddirfd), test->oldpath,
138			*(test->newdirfd), test->newpath, test->flags));
139
140	if ((test->flags & RENAME_EXCHANGE) && EINVAL == TEST_ERRNO
141		&& fs_type == TST_BTRFS_MAGIC) {
142		tst_resm(TCONF,
143			"RENAME_EXCHANGE flag is not implemeted on %s",
144			tst_fs_type_name(fs_type));
145		return;
146	}
147
148	if (test->exp_errno && TEST_RETURN != -1) {
149		tst_resm(TFAIL, "renameat2() succeeded unexpectedly");
150		return;
151	}
152
153	if (test->exp_errno == 0 && TEST_RETURN != 0) {
154		tst_resm(TFAIL | TTERRNO, "renameat2() failed unexpectedly");
155		return;
156	}
157
158	if (test->exp_errno == TEST_ERRNO) {
159		tst_resm(TPASS | TTERRNO,
160		"renameat2() returned the expected value");
161		return;
162	}
163
164	tst_resm(TFAIL | TTERRNO,
165		"renameat2() got unexpected return value: expected: %d - %s",
166			test->exp_errno, tst_strerrno(test->exp_errno));
167
168}
169