| /* |
| * |
| * Copyright (c) International Business Machines Corp., 2001 |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2 of the License, or |
| * (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See |
| * the GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| */ |
| |
| /* |
| * Test Name: sync02 |
| * |
| * Test Description: |
| * Open a file for write; modify the file, then do a sync(). |
| * Verify that the data has been written to disk by re-opening the file. |
| * |
| * Expected Result: |
| * sync() alawys returns 0 in Linux. The data written to the file should |
| * be updated to the disk. |
| * |
| * Algorithm: |
| * Setup: |
| * Setup signal handling. |
| * Create temporary directory. |
| * Pause for SIGUSR1 if option specified. |
| * |
| * Test: |
| * Loop if the proper options are given. |
| * Execute system call |
| * Check return code, if system call failed (return=-1) |
| * Log the errno and Issue a FAIL message. |
| * Otherwise, |
| * Verify the Functionality of system call |
| * if successful, |
| * Issue Functionality-Pass message. |
| * Otherwise, |
| * Issue Functionality-Fail message. |
| * Cleanup: |
| * Print errno log and/or timing stats if options given |
| * Delete the temporary directory created. |
| * |
| * Usage: <for command-line> |
| * sync02 [-c n] [-f] [-i n] [-I x] [-p x] [-t] |
| * where, -c n : Run n copies concurrently. |
| * -f : Turn off functionality Testing. |
| * -i n : Execute test n times. |
| * -I x : Execute test for x seconds. |
| * -P x : Pause for x seconds between iterations. |
| * -t : Turn on syscall timing. |
| * |
| * History |
| * 07/2001 John George |
| * -Ported |
| * |
| * Restrictions: |
| * None. |
| */ |
| |
| #include <stdio.h> |
| #include <unistd.h> |
| #include <sys/types.h> |
| #include <errno.h> |
| #include <fcntl.h> |
| #include <string.h> |
| #include <signal.h> |
| #include <sys/stat.h> |
| |
| #include "test.h" |
| |
| #define TEMP_FILE "temp_file" |
| #define FILE_MODE S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH |
| |
| char *TCID = "sync02"; |
| int TST_TOTAL = 1; |
| char write_buffer[BUFSIZ]; /* buffer used to write data to file */ |
| int fildes; /* file descriptor for temporary file */ |
| |
| void setup(); /* Main setup function of test */ |
| void cleanup(); /* cleanup function for the test */ |
| |
| int main(int ac, char **av) |
| { |
| int lc; |
| char read_buffer[BUFSIZ]; /* buffer used to read data from file */ |
| |
| tst_parse_opts(ac, av, NULL, NULL); |
| |
| setup(); |
| |
| for (lc = 0; TEST_LOOPING(lc); lc++) { |
| |
| tst_count = 0; |
| |
| /* |
| * Call sync(2) to commit buffer data to disk. |
| */ |
| TEST_VOID(sync()); |
| |
| if (TEST_RETURN == -1) { |
| tst_resm(TFAIL, "%s, Failed, errno=%d : %s", |
| TCID, TEST_ERRNO, strerror(TEST_ERRNO)); |
| } else { |
| /* Set the file ptr to b'nning of file */ |
| if (lseek(fildes, 0, SEEK_SET) < 0) { |
| tst_brkm(TFAIL, cleanup, "lseek() " |
| "failed on %s, error=%d", |
| TEMP_FILE, errno); |
| } |
| |
| /* Read the contents of file */ |
| if (read(fildes, read_buffer, |
| sizeof(read_buffer)) > 0) { |
| if (strcmp(read_buffer, write_buffer)) { |
| tst_resm(TFAIL, "Data read " |
| "from %s doesn't match " |
| "with witten data", |
| TEMP_FILE); |
| } else { |
| tst_resm(TPASS, "Functionality " |
| "of sync() successful"); |
| } |
| } else { |
| tst_brkm(TFAIL, cleanup, |
| "read() Fails on %s, error=%d", |
| TEMP_FILE, errno); |
| } |
| } |
| tst_count++; /* incr. TEST_LOOP counter */ |
| } |
| |
| cleanup(); |
| tst_exit(); |
| } |
| |
| /* |
| * void |
| * setup() - performs all ONE TIME setup for this test. |
| * Create a temporary directory and change directory to it. |
| * Create a test file under temporary directory and write some |
| * data into it. |
| */ |
| void setup(void) |
| { |
| |
| tst_sig(NOFORK, DEF_HANDLER, cleanup); |
| |
| /* Pause if that option was specified |
| * TEST_PAUSE contains the code to fork the test with the -i option. |
| * You want to make sure you do this before you create your temporary |
| * directory. |
| */ |
| TEST_PAUSE; |
| |
| tst_tmpdir(); |
| |
| /* Copy some data into data buffer */ |
| strcpy(write_buffer, "abcdefghijklmnopqrstuvwxyz"); |
| |
| /* Creat a temporary file under above directory */ |
| if ((fildes = open(TEMP_FILE, O_RDWR | O_CREAT, FILE_MODE)) == -1) { |
| tst_brkm(TBROK, cleanup, |
| "open(%s, O_RDWR | O_CREAT, %#o) Failed, errno=%d :%s", |
| TEMP_FILE, FILE_MODE, errno, strerror(errno)); |
| } |
| |
| /* Write the buffer data into file */ |
| if (write(fildes, write_buffer, strlen(write_buffer) + 1) != |
| strlen(write_buffer) + 1) { |
| tst_brkm(TBROK, cleanup, |
| "write() failed to write buffer data to %s", |
| TEMP_FILE); |
| } |
| |
| } |
| |
| /* |
| * void |
| * cleanup() - performs all ONE TIME cleanup for this test at |
| * completion or premature exit. |
| * Remove the test directory and testfile created in the setup. |
| */ |
| void cleanup(void) |
| { |
| |
| /* Close the temporary file */ |
| if (close(fildes) == -1) { |
| tst_brkm(TFAIL, NULL, |
| "close(%s) Failed, errno=%d : %s", |
| TEMP_FILE, errno, strerror(errno)); |
| } |
| |
| tst_rmdir(); |
| |
| } |