1 /*
2 *
3 * Copyright (c) International Business Machines Corp., 2001
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
13 * the GNU General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
18 */
19
20 /*
21 * Test Name: llseek02
22 * Note that glibc exports the llseek syscall as lseek64.
23 *
24 * Test Description:
25 * Verify that,
26 * 1. llseek() returns -1 and sets errno to EINVAL, if the 'Whence' argument
27 * is not a proper value.
28 * 2. llseek() returns -1 and sets errno to EBADF, if the file handle of
29 * the specified file is not valid.
30 *
31 * Expected Result:
32 * llseek() should fail with return value -1 and set expected errno.
33 *
34 * Algorithm:
35 * Setup:
36 * Setup signal handling.
37 * Create temporary directory.
38 * Pause for SIGUSR1 if option specified.
39 *
40 * Test:
41 * Loop if the proper options are given.
42 * Execute system call
43 * Check return code, if system call failed (return=-1)
44 * if errno set == expected errno
45 * Issue sys call fails with expected return value and errno.
46 * Otherwise,
47 * Issue sys call fails with unexpected errno.
48 * Otherwise,
49 * Issue sys call returns unexpected value.
50 *
51 * Cleanup:
52 * Print errno log and/or timing stats if options given
53 * Delete the temporary directory(s)/file(s) created.
54 *
55 * Usage: <for command-line>
56 * llseek02 [-c n] [-e] [-i n] [-I x] [-P x] [-t]
57 * where, -c n : Run n copies concurrently.
58 * -i n : Execute test n times.
59 * -I x : Execute test for x seconds.
60 * -P x : Pause for x seconds between iterations.
61 * -t : Turn on syscall timing.
62 *
63 * HISTORY
64 * 07/2001 Ported by Wayne Boyer
65 *
66 * RESTRICTIONS:
67 * None.
68 */
69
70 #ifndef _GNU_SOURCE
71 #define _GNU_SOURCE
72 #endif
73
74 #include <stdio.h>
75 #include <unistd.h>
76 #include <sys/types.h>
77 #include <errno.h>
78 #include <fcntl.h>
79 #include <utime.h>
80 #include <string.h>
81 #include <sys/stat.h>
82 #include <signal.h>
83
84 #include "test.h"
85 #include "safe_macros.h"
86
87 #define TEMP_FILE1 "tmp_file1"
88 #define TEMP_FILE2 "tmp_file2"
89 #define FILE_MODE S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH
90 #define SEEK_TOP 10
91
92 char *TCID = "llseek02";
93 int TST_TOTAL = 2;
94
95 int no_setup();
96 int setup1(); /* setup function to test llseek() for EINVAL */
97 int setup2(); /* setup function to test llseek() for EBADF */
98
99 int fd1; /* file handle for testfile1 */
100 int fd2; /* file handle for testfile2 */
101
102 struct test_case_t { /* test case struct. to hold ref. test cond's */
103 int fd;
104 int Whence;
105 char *desc;
106 int exp_errno;
107 int (*setupfunc) ();
108 } Test_cases[] = {
109 {
110 1, SEEK_TOP, "'whence' argument is not valid", EINVAL, setup1}, {
111 2, SEEK_SET, "'fd' is not an open file descriptor", EBADF, setup2},
112 {
113 0, 0, NULL, 0, no_setup}
114 };
115
116 void setup(); /* Main setup function of test */
117 void cleanup(); /* cleanup function for the test */
118
main(int ac,char ** av)119 int main(int ac, char **av)
120 {
121 int lc;
122 int fildes; /* file handle for testfile */
123 int whence; /* position of file handle in the file */
124 char *test_desc; /* test specific error message */
125 int ind; /* counter to test different test conditions */
126
127 tst_parse_opts(ac, av, NULL, NULL);
128
129 setup();
130
131 for (lc = 0; TEST_LOOPING(lc); lc++) {
132
133 tst_count = 0;
134
135 for (ind = 0; Test_cases[ind].desc != NULL; ind++) {
136 fildes = Test_cases[ind].fd;
137 test_desc = Test_cases[ind].desc;
138 whence = Test_cases[ind].Whence;
139
140 /* Assign the 'fd' values appropriatly */
141 if (fildes == 1) {
142 fildes = fd1;
143 } else {
144 fildes = fd2;
145 }
146
147 /*
148 * Invoke llseek(2) to test different test conditions.
149 * Verify that it fails with -1 return value and
150 * sets appropriate errno.
151 */
152 TEST(lseek64(fildes, (loff_t) 0, whence));
153
154 if (TEST_RETURN != (loff_t) - 1) {
155 tst_resm(TFAIL,
156 "llseek() returned %ld, expected"
157 " -1, errno:%d", TEST_RETURN,
158 Test_cases[ind].exp_errno);
159 continue;
160 }
161 if (TEST_ERRNO == Test_cases[ind].exp_errno) {
162 tst_resm(TPASS, "llseek() fails, %s, errno:%d",
163 test_desc, TEST_ERRNO);
164 } else {
165 tst_resm(TFAIL, "llseek() fails, %s, errno:%d, "
166 "expected errno:%d", test_desc,
167 TEST_ERRNO, Test_cases[ind].exp_errno);
168 }
169 }
170 }
171
172 cleanup();
173
174 tst_exit();
175 }
176
177 /*
178 * setup() - performs all ONE TIME setup for this test.
179 * Create a temporary directory and change directory to it.
180 * Invoke individual test setup functions according to the order
181 * set in test struct. definition.
182 */
setup(void)183 void setup(void)
184 {
185 int ind;
186
187 tst_sig(NOFORK, DEF_HANDLER, cleanup);
188
189 TEST_PAUSE;
190
191 tst_tmpdir();
192
193 /* call individual setup functions */
194 for (ind = 0; Test_cases[ind].desc != NULL; ind++) {
195 Test_cases[ind].setupfunc();
196 }
197 }
198
199 /*
200 * no_setup() - This is a dummy function which simply returns 0.
201 */
no_setup(void)202 int no_setup(void)
203 {
204 return 0;
205 }
206
207 /*
208 * setup1() - setup function for a test condition for which llseek(2)
209 * returns -1 and sets errno to EINVAL.
210 * Creat a temporary file for reading/writing and write some data
211 * into it.
212 * This function returns 0 on success.
213 */
setup1(void)214 int setup1(void)
215 {
216 char write_buff[BUFSIZ]; /* buffer to hold data */
217
218 /* Get the data to be written to temporary file */
219 strcpy(write_buff, "abcdefg");
220
221 /* Creat/open a temporary file under above directory */
222 if ((fd1 = open(TEMP_FILE1, O_RDWR | O_CREAT, FILE_MODE)) == -1) {
223 tst_brkm(TBROK, cleanup,
224 "open(%s, O_RDWR|O_CREAT, %#o) Failed, errno=%d :%s",
225 TEMP_FILE1, FILE_MODE, errno, strerror(errno));
226 }
227
228 /* Write data into temporary file */
229 if (write(fd1, write_buff, sizeof(write_buff)) <= 0) {
230 tst_brkm(TBROK, cleanup, "write(2) on %s Failed, errno=%d : %s",
231 TEMP_FILE1, errno, strerror(errno));
232 }
233
234 return 0;
235 }
236
237 /*
238 * setup2() - setup function for a test condition for which llseek(2)
239 * returns -1 and sets errno to EBADF.
240 * Creat a temporary file for reading/writing and close it.
241 * This function returns 0 on success.
242 */
setup2(void)243 int setup2(void)
244 {
245 /* Creat/open a temporary file under above directory */
246 if ((fd2 = open(TEMP_FILE2, O_RDWR | O_CREAT, FILE_MODE)) == -1) {
247 tst_brkm(TBROK, cleanup,
248 "open(%s, O_RDWR|O_CREAT, %#o) Failed, errno=%d :%s",
249 TEMP_FILE2, FILE_MODE, errno, strerror(errno));
250 }
251
252 /* Close the temporary file created above */
253 SAFE_CLOSE(cleanup, fd2);
254
255 return 0;
256 }
257
258 /*
259 * cleanup() - performs all ONE TIME cleanup for this test at
260 * completion or premature exit.
261 * Close the temporary file.
262 * Remove the test directory and testfile created in the setup.
263 */
cleanup(void)264 void cleanup(void)
265 {
266
267 /* Close the temporary file(s) created in setup1/setup2 */
268 if (close(fd1) < 0) {
269 tst_brkm(TFAIL, NULL, "close(%s) Failed, errno=%d : %s:",
270 TEMP_FILE1, errno, strerror(errno));
271 }
272
273 tst_rmdir();
274
275 }
276