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: truncate01
22 *
23 * Test Description:
24 * Verify that, truncate(2) succeeds to truncate a file to a specified
25 * length.
26 *
27 * Expected Result:
28 * truncate(2) should return a value 0 and the length of the file after
29 * truncation should be equal to the length it is truncated to.
30 *
31 * Algorithm:
32 * Setup:
33 * Setup signal handling.
34 * Create temporary directory.
35 * Pause for SIGUSR1 if option specified.
36 *
37 * Test:
38 * Loop if the proper options are given.
39 * Execute system call
40 * Check return code, if system call failed (return=-1)
41 * Log the errno and Issue a FAIL message.
42 * Otherwise,
43 * Verify the Functionality of system call
44 * if successful,
45 * Issue Functionality-Pass message.
46 * Otherwise,
47 * Issue Functionality-Fail message.
48 * Cleanup:
49 * Print errno log and/or timing stats if options given
50 * Delete the temporary directory created.
51 *
52 * Usage: <for command-line>
53 * truncate01 [-c n] [-e] [-f] [-i n] [-I x] [-p x] [-t]
54 * where, -c n : Run n copies concurrently.
55 * -e : Turn on errno logging.
56 * -f : Turn off functionality Testing.
57 * -i n : Execute test n times.
58 * -I x : Execute test for x seconds.
59 * -P x : Pause for x seconds between iterations.
60 * -t : Turn on syscall timing.
61 *
62 * History
63 * 07/2001 John George
64 * -Ported
65 *
66 * Restrictions:
67 * This test should be run by 'non-super-user' only.
68 *
69 */
70
71 #include <sys/types.h>
72 #include <sys/stat.h>
73 #include <fcntl.h>
74 #include <errno.h>
75 #include <string.h>
76 #include <signal.h>
77 #include <inttypes.h>
78
79 #include "test.h"
80 #include "safe_macros.h"
81
82 #define TESTFILE "testfile" /* file under test */
83 #define FILE_MODE S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH
84 #define BUF_SIZE 256 /* buffer size */
85 #define FILE_SIZE 1024 /* test file size */
86 #define TRUNC_LEN 256 /* truncation length */
87
88 TCID_DEFINE(truncate01);
89 int TST_TOTAL = 1;
90
91 void setup(); /* setup function for the test */
92 void cleanup(); /* cleanup function for the test */
93
main(int ac,char ** av)94 int main(int ac, char **av)
95 {
96 struct stat stat_buf; /* stat(2) struct contents */
97 int lc;
98 off_t file_length; /* test file length */
99
100 tst_parse_opts(ac, av, NULL, NULL);
101
102 setup();
103
104 for (lc = 0; TEST_LOOPING(lc); lc++) {
105
106 tst_count = 0;
107
108 /*
109 * Call truncate(2) to truncate a test file to a
110 * specified length.
111 */
112 TEST(truncate(TESTFILE, TRUNC_LEN));
113
114 if (TEST_RETURN == -1) {
115 tst_resm(TFAIL,
116 "truncate(%s, %d) Failed, errno=%d : %s",
117 TESTFILE, TRUNC_LEN, TEST_ERRNO,
118 strerror(TEST_ERRNO));
119 } else {
120 /*
121 * Get the testfile information using
122 * stat(2).
123 */
124 if (stat(TESTFILE, &stat_buf) < 0) {
125 tst_brkm(TFAIL, cleanup, "stat(2) of "
126 "%s failed, error:%d",
127 TESTFILE, errno);
128 }
129 stat_buf.st_mode &= ~S_IFREG;
130 file_length = stat_buf.st_size;
131
132 /*
133 * Check for expected size of testfile after
134 * truncate(2) on it.
135 */
136 if (file_length != TRUNC_LEN) {
137 tst_resm(TFAIL, "%s: Incorrect file "
138 "size %" PRId64
139 ", Expected %d", TESTFILE,
140 (int64_t) file_length,
141 TRUNC_LEN);
142 } else {
143 tst_resm(TPASS, "Functionality of "
144 "truncate(%s, %d) successful",
145 TESTFILE, TRUNC_LEN);
146 }
147 }
148 tst_count++; /* incr TEST_LOOP counter */
149 }
150
151 cleanup();
152 tst_exit();
153 }
154
155 /*
156 * void
157 * setup() - performs all ONE TIME setup for this test.
158 * Create a temporary directory and change directory to it.
159 * Fill the buffer with some arbitrary data to be written to a file.
160 * Create a test file under temporary directory and close it
161 * write arbitrary data into testfile.
162 */
setup(void)163 void setup(void)
164 {
165 int fd, i; /* file handler for testfile */
166 int c, c_total = 0; /* no. bytes to be written to file */
167 char tst_buff[BUF_SIZE]; /* buffer to hold data */
168
169 tst_sig(FORK, DEF_HANDLER, cleanup);
170
171 /* Pause if that option was specified
172 * TEST_PAUSE contains the code to fork the test with the -i option.
173 * You want to make sure you do this before you create your temporary
174 * directory.
175 */
176 TEST_PAUSE;
177
178 tst_tmpdir();
179
180 /* Fill the test buffer with the known data */
181 for (i = 0; i < BUF_SIZE; i++) {
182 tst_buff[i] = 'a';
183 }
184
185 /* Creat a testfile under temporary directory */
186 if ((fd = open(TESTFILE, O_RDWR | O_CREAT, FILE_MODE)) == -1) {
187 tst_brkm(TBROK, cleanup,
188 "open(%s, O_RDWR|O_CREAT, %o) Failed, errno=%d : %s",
189 TESTFILE, FILE_MODE, errno, strerror(errno));
190 }
191
192 /* Write to the file 1k data from the buffer */
193 while (c_total < FILE_SIZE) {
194 if ((c = write(fd, tst_buff, sizeof(tst_buff))) <= 0) {
195 tst_brkm(TBROK, cleanup,
196 "write(2) on %s Failed, errno=%d : %s",
197 TESTFILE, errno, strerror(errno));
198 } else {
199 c_total += c;
200 }
201 }
202
203 /* Close the testfile after writing data into it */
204 SAFE_CLOSE(cleanup, fd);
205 }
206
207 /*
208 * void
209 * cleanup() - performs all ONE TIME cleanup for this test at
210 * completion or premature exit.
211 * Remove the test directory and testfile created in the setup.
212 */
cleanup(void)213 void cleanup(void)
214 {
215
216 tst_rmdir();
217
218 }
219