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
86 #define TEMP_FILE1 "tmp_file1"
87 #define TEMP_FILE2 "tmp_file2"
88 #define FILE_MODE S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH
89 #define SEEK_TOP 10
90
91 char *TCID = "llseek02";
92 int TST_TOTAL = 2;
93
94 int no_setup();
95 int setup1(); /* setup function to test llseek() for EINVAL */
96 int setup2(); /* setup function to test llseek() for EBADF */
97
98 int fd1; /* file handle for testfile1 */
99 int fd2; /* file handle for testfile2 */
100
101 struct test_case_t { /* test case struct. to hold ref. test cond's */
102 int fd;
103 int Whence;
104 char *desc;
105 int exp_errno;
106 int (*setupfunc) ();
107 } Test_cases[] = {
108 {
109 1, SEEK_TOP, "'whence' argument is not valid", EINVAL, setup1}, {
110 2, SEEK_SET, "'fd' is not an open file descriptor", EBADF, setup2},
111 {
112 0, 0, NULL, 0, no_setup}
113 };
114
115 void setup(); /* Main setup function of test */
116 void cleanup(); /* cleanup function for the test */
117
main(int ac,char ** av)118 int main(int ac, char **av)
119 {
120 int lc;
121 int fildes; /* file handle for testfile */
122 int whence; /* position of file handle in the file */
123 char *test_desc; /* test specific error message */
124 int ind; /* counter to test different test conditions */
125
126 tst_parse_opts(ac, av, NULL, NULL);
127
128 setup();
129
130 for (lc = 0; TEST_LOOPING(lc); lc++) {
131
132 tst_count = 0;
133
134 for (ind = 0; Test_cases[ind].desc != NULL; ind++) {
135 fildes = Test_cases[ind].fd;
136 test_desc = Test_cases[ind].desc;
137 whence = Test_cases[ind].Whence;
138
139 /* Assign the 'fd' values appropriatly */
140 if (fildes == 1) {
141 fildes = fd1;
142 } else {
143 fildes = fd2;
144 }
145
146 /*
147 * Invoke llseek(2) to test different test conditions.
148 * Verify that it fails with -1 return value and
149 * sets appropriate errno.
150 */
151 TEST(lseek64(fildes, (loff_t) 0, whence));
152
153 if (TEST_RETURN != (loff_t) - 1) {
154 tst_resm(TFAIL,
155 "llseek() returned %ld, expected"
156 " -1, errno:%d", TEST_RETURN,
157 Test_cases[ind].exp_errno);
158 continue;
159 }
160 if (TEST_ERRNO == Test_cases[ind].exp_errno) {
161 tst_resm(TPASS, "llseek() fails, %s, errno:%d",
162 test_desc, TEST_ERRNO);
163 } else {
164 tst_resm(TFAIL, "llseek() fails, %s, errno:%d, "
165 "expected errno:%d", test_desc,
166 TEST_ERRNO, Test_cases[ind].exp_errno);
167 }
168 }
169 }
170
171 cleanup();
172
173 tst_exit();
174 }
175
176 /*
177 * setup() - performs all ONE TIME setup for this test.
178 * Create a temporary directory and change directory to it.
179 * Invoke individual test setup functions according to the order
180 * set in test struct. definition.
181 */
setup(void)182 void setup(void)
183 {
184 int ind;
185
186 tst_sig(NOFORK, DEF_HANDLER, cleanup);
187
188 TEST_PAUSE;
189
190 tst_tmpdir();
191
192 /* call individual setup functions */
193 for (ind = 0; Test_cases[ind].desc != NULL; ind++) {
194 Test_cases[ind].setupfunc();
195 }
196 }
197
198 /*
199 * no_setup() - This is a dummy function which simply returns 0.
200 */
no_setup(void)201 int no_setup(void)
202 {
203 return 0;
204 }
205
206 /*
207 * setup1() - setup function for a test condition for which llseek(2)
208 * returns -1 and sets errno to EINVAL.
209 * Creat a temporary file for reading/writing and write some data
210 * into it.
211 * This function returns 0 on success.
212 */
setup1(void)213 int setup1(void)
214 {
215 char write_buff[BUFSIZ]; /* buffer to hold data */
216
217 /* Get the data to be written to temporary file */
218 strcpy(write_buff, "abcdefg");
219
220 /* Creat/open a temporary file under above directory */
221 if ((fd1 = open(TEMP_FILE1, O_RDWR | O_CREAT, FILE_MODE)) == -1) {
222 tst_brkm(TBROK, cleanup,
223 "open(%s, O_RDWR|O_CREAT, %#o) Failed, errno=%d :%s",
224 TEMP_FILE1, FILE_MODE, errno, strerror(errno));
225 }
226
227 /* Write data into temporary file */
228 if (write(fd1, write_buff, sizeof(write_buff)) <= 0) {
229 tst_brkm(TBROK, cleanup, "write(2) on %s Failed, errno=%d : %s",
230 TEMP_FILE1, errno, strerror(errno));
231 }
232
233 return 0;
234 }
235
236 /*
237 * setup2() - setup function for a test condition for which llseek(2)
238 * returns -1 and sets errno to EBADF.
239 * Creat a temporary file for reading/writing and close it.
240 * This function returns 0 on success.
241 */
setup2(void)242 int setup2(void)
243 {
244 /* Creat/open a temporary file under above directory */
245 if ((fd2 = open(TEMP_FILE2, O_RDWR | O_CREAT, FILE_MODE)) == -1) {
246 tst_brkm(TBROK, cleanup,
247 "open(%s, O_RDWR|O_CREAT, %#o) Failed, errno=%d :%s",
248 TEMP_FILE2, FILE_MODE, errno, strerror(errno));
249 }
250
251 /* Close the temporary file created above */
252 if (close(fd2) < 0) {
253 tst_brkm(TBROK, cleanup, "close(%s) Failed, errno=%d : %s:",
254 TEMP_FILE2, errno, strerror(errno));
255 }
256
257 return 0;
258 }
259
260 /*
261 * cleanup() - performs all ONE TIME cleanup for this test at
262 * completion or premature exit.
263 * Close the temporary file.
264 * Remove the test directory and testfile created in the setup.
265 */
cleanup(void)266 void cleanup(void)
267 {
268
269 /* Close the temporary file(s) created in setup1/setup2 */
270 if (close(fd1) < 0) {
271 tst_brkm(TFAIL, NULL, "close(%s) Failed, errno=%d : %s:",
272 TEMP_FILE1, errno, strerror(errno));
273 }
274
275 tst_rmdir();
276
277 }
278