1 /*
2 * Copyright (c) 2015 Fujitsu Ltd.
3 * Author: Guangwen Feng <fenggw-fnst@cn.fujitsu.com>
4 *
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms of version 2 of the GNU General Public License as
7 * published by the Free Software Foundation.
8 *
9 * This program is distributed in the hope that it would be useful, but
10 * WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
12 *
13 * You should have received a copy of the GNU General Public License
14 * alone with this program.
15 */
16
17 /*
18 * DESCRIPTION
19 * Basic test for fcntl(2) using F_SETLEASE & F_WRLCK argument.
20 * "A write lease may be placed on a file only if there are
21 * no other open file descriptors for the file."
22 */
23
24 #include <errno.h>
25
26 #include "test.h"
27 #include "safe_macros.h"
28
29 static void setup(void);
30 static void verify_fcntl(int);
31 static void cleanup(void);
32
33 #define FILE_MODE (S_IRWXU | S_IRWXG | S_IRWXO | S_ISUID | S_ISGID)
34
35 static int fd1;
36 static int fd2;
37 static long type;
38
39 static struct test_case_t {
40 int fd1_flag;
41 int fd2_flag;
42 } test_cases[] = {
43 {O_RDONLY, O_RDONLY},
44 {O_RDONLY, O_WRONLY},
45 {O_RDONLY, O_RDWR},
46 {O_WRONLY, O_RDONLY},
47 {O_WRONLY, O_WRONLY},
48 {O_WRONLY, O_RDWR},
49 {O_RDWR, O_RDONLY},
50 {O_RDWR, O_WRONLY},
51 {O_RDWR, O_RDWR},
52 };
53
54 char *TCID = "fcntl32";
55 int TST_TOTAL = ARRAY_SIZE(test_cases);
56
main(int ac,char ** av)57 int main(int ac, char **av)
58 {
59 int lc;
60 int tc;
61
62 tst_parse_opts(ac, av, NULL, NULL);
63
64 setup();
65
66 for (lc = 0; TEST_LOOPING(lc); lc++) {
67 tst_count = 0;
68
69 for (tc = 0; tc < TST_TOTAL; tc++)
70 verify_fcntl(tc);
71 }
72
73 cleanup();
74 tst_exit();
75 }
76
setup(void)77 static void setup(void)
78 {
79 tst_sig(NOFORK, DEF_HANDLER, cleanup);
80 TEST_PAUSE;
81
82 tst_tmpdir();
83
84 switch ((type = tst_fs_type(cleanup, "."))) {
85 case TST_NFS_MAGIC:
86 case TST_RAMFS_MAGIC:
87 case TST_TMPFS_MAGIC:
88 tst_brkm(TCONF, cleanup,
89 "Cannot do fcntl(F_SETLEASE, F_WRLCK) "
90 "on %s filesystem",
91 tst_fs_type_name(type));
92 default:
93 break;
94 }
95
96 SAFE_TOUCH(cleanup, "file", FILE_MODE, NULL);
97 }
98
verify_fcntl(int i)99 static void verify_fcntl(int i)
100 {
101 fd1 = SAFE_OPEN(cleanup, "file", test_cases[i].fd1_flag);
102 fd2 = SAFE_OPEN(cleanup, "file", test_cases[i].fd2_flag);
103
104 TEST(fcntl(fd1, F_SETLEASE, F_WRLCK));
105
106 if (TEST_RETURN == 0) {
107 tst_resm(TFAIL, "fcntl(F_SETLEASE, F_WRLCK) "
108 "succeeded unexpectedly");
109 } else {
110 if (TEST_ERRNO == EBUSY || TEST_ERRNO == EAGAIN) {
111 tst_resm(TPASS | TTERRNO,
112 "fcntl(F_SETLEASE, F_WRLCK) "
113 "failed as expected");
114 } else {
115 tst_resm(TFAIL | TTERRNO,
116 "fcntl(F_SETLEASE, F_WRLCK) "
117 "failed unexpectedly, "
118 "expected errno is EBUSY or EAGAIN");
119 }
120 }
121
122 SAFE_CLOSE(cleanup, fd1);
123 fd1 = 0;
124 SAFE_CLOSE(cleanup, fd2);
125 fd2 = 0;
126 }
127
cleanup(void)128 static void cleanup(void)
129 {
130 if (fd1 > 0 && close(fd1))
131 tst_resm(TWARN | TERRNO, "Failed to close file");
132
133 if (fd2 > 0 && close(fd2))
134 tst_resm(TWARN | TERRNO, "Failed to close file");
135
136 tst_rmdir();
137 }
138