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: ftruncate01
22 *
23 * Test Description:
24 * Verify that, ftruncate(2) succeeds to truncate a file to a specified
25 * length if the file indicated by file descriptor opened for writing.
26 *
27 * Expected Result:
28 * ftruncate(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 * ftruncate01 [-c n] [-f] [-i n] [-I x] [-P x] [-t]
54 * where, -c n : Run n copies concurrently.
55 * -f : Turn off functionality Testing.
56 * -i n : Execute test n times.
57 * -I x : Execute test for x seconds.
58 * -P x : Pause for x seconds between iterations.
59 * -t : Turn on syscall timing.
60 *
61 * HISTORY
62 * 07/2001 Ported by Wayne Boyer
63 *
64 * RESTRICTIONS:
65 * This test should be run by 'non-super-user' only.
66 *
67 */
68
69 #include <sys/types.h>
70 #include <sys/stat.h>
71 #include <fcntl.h>
72 #include <errno.h>
73 #include <string.h>
74 #include <signal.h>
75 #include <inttypes.h>
76
77 #include "test.h"
78
79 #define TESTFILE "testfile" /* file under test */
80 #define FILE_MODE S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH
81 #define BUF_SIZE 256 /* buffer size */
82 #define FILE_SIZE 1024 /* test file size */
83 #define TRUNC_LEN 256 /* truncation length */
84
85 TCID_DEFINE(ftruncate01);
86 int TST_TOTAL = 1; /* Total number of test conditions */
87 int fildes; /* file descriptor for test file */
88
89 void setup(); /* setup function for the test */
90 void cleanup(); /* cleanup function for the test */
91
main(int ac,char ** av)92 int main(int ac, char **av)
93 {
94 struct stat stat_buf; /* stat(2) struct contents */
95 int lc;
96 off_t file_length; /* test file length */
97
98 tst_parse_opts(ac, av, NULL, NULL);
99
100 setup();
101
102 for (lc = 0; TEST_LOOPING(lc); lc++) {
103
104 tst_count = 0;
105
106 /*
107 * Call ftruncate(2) to truncate a test file to a
108 * specified length.
109 */
110 TEST(ftruncate(fildes, TRUNC_LEN));
111
112 if (TEST_RETURN == -1) {
113 tst_resm(TFAIL | TTERRNO, "ftruncate(%s) failed",
114 TESTFILE);
115 continue;
116 }
117 /*
118 * Get the testfile information using
119 * fstat(2).
120 */
121 if (fstat(fildes, &stat_buf) < 0) {
122 tst_brkm(TFAIL, cleanup,
123 "stat(2) of %s failed, error:%d",
124 TESTFILE, errno);
125 }
126 stat_buf.st_mode &= ~S_IFREG;
127 file_length = stat_buf.st_size;
128
129 /*
130 * Check for expected size of testfile after
131 * truncate(2) on it.
132 */
133 if (file_length != TRUNC_LEN) {
134 tst_resm(TFAIL,
135 "%s: Incorrect file size %" PRId64 ", "
136 "Expected %d", TESTFILE,
137 (int64_t) file_length, TRUNC_LEN);
138 } else {
139 tst_resm(TPASS, "Functionality of ftruncate() "
140 "on %s successful", TESTFILE);
141 }
142 }
143
144 cleanup();
145 tst_exit();
146 }
147
148 /*
149 * void
150 * setup() - performs all ONE TIME setup for this test.
151 * Create a temporary directory and change directory to it.
152 * Create a test file under temporary directory and write some
153 * data into it.
154 */
setup(void)155 void setup(void)
156 {
157 int i;
158 int c, c_total = 0; /* bytes to be written to file */
159 char tst_buff[BUF_SIZE]; /* buffer to hold data */
160
161 tst_sig(NOFORK, DEF_HANDLER, cleanup);
162
163 TEST_PAUSE;
164
165 tst_tmpdir();
166
167 /* Fill the test buffer with the known data */
168 for (i = 0; i < BUF_SIZE; i++) {
169 tst_buff[i] = 'a';
170 }
171
172 /* open a file for reading/writing */
173 fildes = open(TESTFILE, O_RDWR | O_CREAT, FILE_MODE);
174 if (fildes == -1)
175 tst_brkm(TBROK | TERRNO, cleanup,
176 "open(%s, O_RDWR|O_CREAT, %o) failed",
177 TESTFILE, FILE_MODE);
178
179 /* Write to the file 1k data from the buffer */
180 while (c_total < FILE_SIZE) {
181 if ((c = write(fildes, tst_buff, sizeof(tst_buff))) <= 0) {
182 tst_brkm(TBROK | TERRNO, cleanup, "write(%s) failed",
183 TESTFILE);
184 } else {
185 c_total += c;
186 }
187 }
188 }
189
190 /*
191 * void
192 * cleanup() - performs all ONE TIME cleanup for this test at
193 * completion or premature exit.
194 * Close the temporary file.
195 * Remove the test directory and testfile created in the setup.
196 */
cleanup(void)197 void cleanup(void)
198 {
199
200 /* Close the testfile after writing data into it */
201 if (close(fildes) == -1)
202 tst_brkm(TFAIL | TERRNO, NULL, "close(%s) failed", TESTFILE);
203
204 tst_rmdir();
205
206 }
207