1 /*
2 * Copyright (C) 2012 Linux Test Project, Inc.
3 *
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of version 2 of the GNU General Public
6 * License as published by the Free Software Foundation.
7 *
8 * This program is distributed in the hope that it would be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
11 *
12 * Further, this software is distributed without any warranty that it
13 * is free of the rightful claim of any third person regarding
14 * infringement or the like. Any license provided herein, whether
15 * implied or otherwise, applies only to this software file. Patent
16 * licenses, if any, provided herein do not apply to combinations of
17 * this program with other software, or any other product whatsoever.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write the Free Software
21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
22 * 02110-1301, USA.
23 */
24
25 /*
26 * errno tests for readahead() syscall
27 */
28 #define _GNU_SOURCE
29 #include <errno.h>
30 #include <fcntl.h>
31 #include <stdio.h>
32 #include <stdlib.h>
33 #include <unistd.h>
34 #include <sys/socket.h>
35 #include <sys/stat.h>
36 #include <sys/syscall.h>
37 #include <sys/types.h>
38 #include "config.h"
39 #include "test.h"
40 #include "safe_macros.h"
41 #include "lapi/syscalls.h"
42
43 char *TCID = "readahead01";
44 int TST_TOTAL = 1;
45
46 option_t options[] = {
47 {NULL, NULL, NULL}
48 };
49
50 #if defined(__NR_readahead)
51 static void setup(void);
52 static void cleanup(void);
53
check_ret(long expected_ret)54 static int check_ret(long expected_ret)
55 {
56 if (expected_ret == TEST_RETURN) {
57 tst_resm(TPASS, "expected ret success - "
58 "returned value = %ld", TEST_RETURN);
59 return 0;
60 }
61 tst_resm(TFAIL, "unexpected failure - "
62 "returned value = %ld, expected: %ld",
63 TEST_RETURN, expected_ret);
64 return 1;
65 }
66
check_errno(long expected_errno)67 static int check_errno(long expected_errno)
68 {
69 if (TEST_ERRNO == expected_errno) {
70 tst_resm(TPASS | TTERRNO, "expected failure");
71 return 0;
72 }
73
74 if (TEST_ERRNO == 0)
75 tst_resm(TFAIL, "call succeeded unexpectedly");
76 else
77 tst_resm(TFAIL | TTERRNO, "unexpected failure - "
78 "expected = %ld : %s, actual",
79 expected_errno, strerror(expected_errno));
80 return 1;
81 }
82
test_bad_fd(void)83 static void test_bad_fd(void)
84 {
85 char tempname[PATH_MAX] = "readahead01_XXXXXX";
86 int fd;
87
88 tst_resm(TINFO, "test_bad_fd -1");
89 TEST(readahead(-1, 0, getpagesize()));
90 check_ret(-1);
91 check_errno(EBADF);
92
93 tst_resm(TINFO, "test_bad_fd O_WRONLY");
94 fd = mkstemp(tempname);
95 if (fd == -1)
96 tst_resm(TBROK | TERRNO, "mkstemp failed");
97 close(fd);
98 fd = open(tempname, O_WRONLY);
99 if (fd == -1)
100 tst_resm(TBROK | TERRNO, "Failed to open testfile");
101 TEST(readahead(fd, 0, getpagesize()));
102 check_ret(-1);
103 check_errno(EBADF);
104 close(fd);
105 unlink(tempname);
106 }
107
test_invalid_fd(void)108 static void test_invalid_fd(void)
109 {
110 int fd[2];
111
112 tst_resm(TINFO, "test_invalid_fd pipe");
113 if (pipe(fd) < 0)
114 tst_resm(TBROK | TERRNO, "Failed to create pipe");
115 TEST(readahead(fd[0], 0, getpagesize()));
116 check_ret(-1);
117 check_errno(EINVAL);
118 close(fd[0]);
119 close(fd[1]);
120
121 tst_resm(TINFO, "test_invalid_fd socket");
122 fd[0] = socket(AF_INET, SOCK_STREAM, 0);
123 if (fd[0] < 0)
124 tst_resm(TBROK | TERRNO, "Failed to create socket");
125 TEST(readahead(fd[0], 0, getpagesize()));
126 check_ret(-1);
127 check_errno(EINVAL);
128 close(fd[0]);
129 }
130
main(int argc,char * argv[])131 int main(int argc, char *argv[])
132 {
133 int lc;
134
135 tst_parse_opts(argc, argv, options, NULL);
136
137 setup();
138 for (lc = 0; TEST_LOOPING(lc); lc++) {
139 tst_count = 0;
140 test_bad_fd();
141 test_invalid_fd();
142 }
143 cleanup();
144 tst_exit();
145 }
146
setup(void)147 static void setup(void)
148 {
149 tst_require_root();
150 tst_tmpdir();
151
152 /* check if readahead syscall is supported */
153 ltp_syscall(__NR_readahead, 0, 0, 0);
154
155 TEST_PAUSE;
156 }
157
cleanup(void)158 static void cleanup(void)
159 {
160 tst_rmdir();
161 }
162
163 #else /* __NR_readahead */
main(void)164 int main(void)
165 {
166 tst_brkm(TCONF, NULL, "System doesn't support __NR_readahead");
167 }
168 #endif
169