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 <sys/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 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 */ 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 */ 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
