plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame^] | 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 18 | */ |
| 19 | |
| 20 | /* |
| 21 | * Test Name: lseek04 |
| 22 | * |
| 23 | * Test Description: |
| 24 | * Verify that, lseek() call succeeds to set the file pointer position |
| 25 | * to the current specified location, when 'whence' value is set to |
| 26 | * SEEK_CUR and the data read from the specified location should match |
| 27 | * the expected data. |
| 28 | * |
| 29 | * Expected Result: |
| 30 | * lseek() should return the specified offset from the beginning of the file |
| 31 | * measured in bytes. The data read from this location should match the |
| 32 | * expected data. |
| 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 | * Log the errno and Issue a FAIL message. |
| 45 | * Otherwise, |
| 46 | * Verify the Functionality of system call |
| 47 | * if successful, |
| 48 | * Issue Functionality-Pass message. |
| 49 | * Otherwise, |
| 50 | * Issue Functionality-Fail message. |
| 51 | * Cleanup: |
| 52 | * Print errno log and/or timing stats if options given |
| 53 | * Delete the temporary directory created. |
| 54 | * |
| 55 | * Usage: <for command-line> |
| 56 | * lseek04 [-c n] [-f] [-i n] [-I x] [-P x] [-t] |
| 57 | * where, -c n : Run n copies concurrently. |
| 58 | * -f : Turn off functionality Testing. |
| 59 | * -i n : Execute test n times. |
| 60 | * -I x : Execute test for x seconds. |
| 61 | * -P x : Pause for x seconds between iterations. |
| 62 | * -t : Turn on syscall timing. |
| 63 | * |
| 64 | * HISTORY |
| 65 | * 07/2001 Ported by Wayne Boyer |
| 66 | * |
| 67 | * RESTRICTIONS: |
| 68 | * None. |
| 69 | */ |
| 70 | |
| 71 | #include <stdio.h> |
| 72 | #include <unistd.h> |
| 73 | #include <sys/types.h> |
| 74 | #include <errno.h> |
| 75 | #include <fcntl.h> |
| 76 | #include <utime.h> |
| 77 | #include <string.h> |
| 78 | #include <sys/stat.h> |
| 79 | #include <signal.h> |
| 80 | |
| 81 | #include "test.h" |
| 82 | #include "usctest.h" |
| 83 | |
| 84 | #define TEMP_FILE "tmp_file" |
| 85 | #define FILE_MODE S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH |
| 86 | |
| 87 | char *TCID="lseek04"; /* Test program identifier. */ |
| 88 | int TST_TOTAL=1; /* Total number of test cases. */ |
| 89 | extern int Tst_count; /* Test Case counter for tst_* routines */ |
| 90 | int fildes; /* file handle for temp file */ |
| 91 | size_t file_size; /* total size of file after data write */ |
| 92 | |
| 93 | void setup(); /* Main setup function of test */ |
| 94 | void cleanup(); /* cleanup function for the test */ |
| 95 | |
| 96 | int |
| 97 | main(int ac, char **av) |
| 98 | { |
| 99 | int lc; /* loop counter */ |
| 100 | int rval; |
| 101 | char *msg; /* message returned from parse_opts */ |
| 102 | char read_buf[BUFSIZ]; /* data read from temp. file */ |
| 103 | |
| 104 | /* Parse standard options given to run the test. */ |
| 105 | msg = parse_opts(ac, av, (option_t *) NULL, NULL); |
| 106 | if (msg != (char *) NULL) { |
| 107 | tst_brkm(TBROK, NULL, "OPTION PARSING ERROR - %s", msg); |
| 108 | tst_exit(); |
| 109 | } |
| 110 | |
| 111 | /* Perform global setup for test */ |
| 112 | setup(); |
| 113 | |
| 114 | /* Check looping state if -i option given */ |
| 115 | for (lc = 0; TEST_LOOPING(lc); lc++) { |
| 116 | /* Reset Tst_count in case we are looping. */ |
| 117 | Tst_count=0; |
| 118 | |
| 119 | /* |
| 120 | * Invoke lseek(2) to set the file |
| 121 | * pointer/handle from the current location |
| 122 | * of the file descriptor + specified offset. |
| 123 | */ |
| 124 | TEST(lseek(fildes, 1, SEEK_CUR)); |
| 125 | |
| 126 | /* check return code of lseek(2) */ |
| 127 | if (TEST_RETURN == (off_t)-1) { |
| 128 | tst_resm(TFAIL, "lseek on (%s) Failed, errno=%d : %s", |
| 129 | TEMP_FILE, TEST_ERRNO, strerror(TEST_ERRNO)); |
| 130 | continue; |
| 131 | } |
| 132 | /* |
| 133 | * Perform functional verification if test |
| 134 | * executed without (-f) option. |
| 135 | */ |
| 136 | if (STD_FUNCTIONAL_TEST) { |
| 137 | /* |
| 138 | * Check if the return value from lseek(2) is equal |
| 139 | * to the 3 positions from the beginning of the file. |
| 140 | * ie, 2 positions from lseek() in the setup + |
| 141 | * 1 position from above above. |
| 142 | */ |
| 143 | if (TEST_RETURN != 3) { |
| 144 | tst_resm(TFAIL, "lseek() returned incorrect " |
| 145 | "value %d, expected 4", TEST_RETURN); |
| 146 | continue; |
| 147 | } |
| 148 | /* |
| 149 | * Read the data byte from this location. |
| 150 | */ |
| 151 | read_buf[0] = '\0'; |
| 152 | if (read(fildes, &read_buf, (file_size - 3)) < 0) { |
| 153 | tst_brkm(TFAIL, cleanup, |
| 154 | "read() failed on %s, error=%d", |
| 155 | TEMP_FILE, errno); |
| 156 | } else { |
| 157 | /* |
| 158 | * Check if read data contains |
| 159 | * expected characters |
| 160 | * From pos 4 ---> 'defg'. |
| 161 | */ |
| 162 | if (strcmp(read_buf, "defg")) { |
| 163 | tst_resm(TFAIL, "Incorrect data read " |
| 164 | "from file %s", TEMP_FILE); |
| 165 | } else { |
| 166 | tst_resm(TPASS, "Functionality of " |
| 167 | "lseek() on %s successful", |
| 168 | TEMP_FILE); |
| 169 | } |
| 170 | } |
| 171 | } else { |
| 172 | tst_resm(TPASS, "call succeeded"); |
| 173 | } |
| 174 | |
| 175 | /* reset file pointer in case we are looping */ |
| 176 | if (lseek(fildes, 2, SEEK_SET) == -1) { |
| 177 | tst_brkm(TBROK, cleanup, "lseek failed - could not " |
| 178 | "reset file pointer"); |
| 179 | } |
| 180 | } /* End for TEST_LOOPING */ |
| 181 | |
| 182 | /* Call cleanup() to undo setup done for the test. */ |
| 183 | cleanup(); |
| 184 | |
| 185 | /*NOTREACHED*/ |
| 186 | } /* End main */ |
| 187 | |
| 188 | /* |
| 189 | * setup() - performs all ONE TIME setup for this test. |
| 190 | * Create a temporary directory and change directory to it. |
| 191 | * Create a test file under temporary directory and write some |
| 192 | * data into it. |
| 193 | * Get the size of the file using fstat(). |
| 194 | */ |
| 195 | void |
| 196 | setup() |
| 197 | { |
| 198 | struct stat stat_buf; /* buffer to hold stat info. */ |
| 199 | char write_buf[BUFSIZ]; /* buffer to hold data */ |
| 200 | |
| 201 | /* capture signals */ |
| 202 | tst_sig(NOFORK, DEF_HANDLER, cleanup); |
| 203 | |
| 204 | /* Pause if that option was specified */ |
| 205 | TEST_PAUSE; |
| 206 | |
| 207 | /* make a temp directory and cd to it */ |
| 208 | tst_tmpdir(); |
| 209 | |
| 210 | /* Get the data to be written to temporary file */ |
| 211 | strcpy(write_buf, "abcdefg"); |
| 212 | |
| 213 | /* Creat/open a temporary file under above directory */ |
| 214 | if ((fildes = open(TEMP_FILE, O_RDWR | O_CREAT, FILE_MODE)) == -1) { |
| 215 | tst_brkm(TBROK, cleanup, |
| 216 | "open(%s, O_RDWR|O_CREAT, %#o) Failed, errno=%d :%s", |
| 217 | TEMP_FILE, FILE_MODE, errno, strerror(errno)); |
| 218 | } |
| 219 | |
| 220 | /* Write data into temporary file */ |
| 221 | if(write(fildes, write_buf, strlen(write_buf)) <= 0) { |
| 222 | tst_brkm(TBROK, cleanup, "write(2) on %s Failed, errno=%d : %s", |
| 223 | TEMP_FILE, errno, strerror(errno)); |
| 224 | } |
| 225 | |
| 226 | /* Get the temporary file information */ |
| 227 | if (fstat(fildes, &stat_buf) < 0) { |
| 228 | tst_brkm(TBROK, cleanup, "fstat(2) on %s Failed, errno=%d : %s", |
| 229 | TEMP_FILE, errno, strerror(errno)); |
| 230 | } |
| 231 | |
| 232 | file_size = stat_buf.st_size; |
| 233 | |
| 234 | /* |
| 235 | * Reset the file pointer position to the specified offset |
| 236 | * from the beginning of the file. |
| 237 | */ |
| 238 | if (lseek(fildes, 2, SEEK_SET) != 2) { |
| 239 | tst_brkm(TBROK, cleanup, |
| 240 | "lseek() fails to set file ptr. to specified offset"); |
| 241 | } |
| 242 | } |
| 243 | |
| 244 | /* |
| 245 | * cleanup() - performs all ONE TIME cleanup for this test at |
| 246 | * completion or premature exit. |
| 247 | * Remove the test directory and testfile created in the setup. |
| 248 | */ |
| 249 | void |
| 250 | cleanup() |
| 251 | { |
| 252 | /* |
| 253 | * print timing stats if that option was specified. |
| 254 | * print errno log if that option was specified. |
| 255 | */ |
| 256 | TEST_CLEANUP; |
| 257 | |
| 258 | /* Close the temporary file created */ |
| 259 | if (close(fildes) < 0) { |
| 260 | tst_brkm(TFAIL, NULL, "close(%s) Failed, errno=%d : %s:", |
| 261 | TEMP_FILE, errno, strerror(errno)); |
| 262 | } |
| 263 | |
| 264 | /* Remove tmp dir and all files in it */ |
| 265 | tst_rmdir(); |
| 266 | |
| 267 | /* exit with return code appropriate for results */ |
| 268 | tst_exit(); |
| 269 | } |