| /* |
| * |
| * 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: lseek07 |
| * |
| * Test Description: |
| * Verify that, lseek() call succeeds to set the file pointer position |
| * to more than the file size, when a file is opened for reading/writing. |
| * |
| * Expected Result: |
| * lseek() should return n+1, where n is the size of the file. |
| * Also when some data is written into this file it should start |
| * from that offset. |
| * |
| * Algorithm: |
| * Setup: |
| * Setup signal handling. |
| * Pause for SIGUSR1 if option specified. |
| * Create temporary directory. |
| * |
| * 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> |
| * lseek07 [-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 Ported by Wayne Boyer |
| * |
| * RESTRICTIONS: |
| * None. |
| */ |
| |
| #include <stdio.h> |
| #include <unistd.h> |
| #include <sys/types.h> |
| #include <errno.h> |
| #include <fcntl.h> |
| #include <utime.h> |
| #include <string.h> |
| #include <sys/stat.h> |
| #include <signal.h> |
| #include <inttypes.h> |
| |
| #include "test.h" |
| |
| #define TEMP_FILE "tmp_file" |
| #define FILE_MODE S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH |
| |
| char *TCID = "lseek07"; |
| int TST_TOTAL = 1; |
| int fildes; /* file handle for temp file */ |
| size_t file_size; /* size of temporary file */ |
| char write_buf1[BUFSIZ]; /* buffer to hold data */ |
| char write_buf2[BUFSIZ]; /* buffer to hold data */ |
| |
| void setup(); /* Main setup function of test */ |
| void cleanup(); /* cleanup function for the test */ |
| |
| int main(int ac, char **av) |
| { |
| int lc; |
| const char *msg; |
| char read_buf[BUFSIZ]; /* data read from temp. file */ |
| off_t offset; /* byte position in temporary file */ |
| |
| if ((msg = parse_opts(ac, av, NULL, NULL)) != NULL) |
| tst_brkm(TBROK, NULL, "OPTION PARSING ERROR - %s", msg); |
| |
| setup(); |
| |
| for (lc = 0; TEST_LOOPING(lc); lc++) { |
| |
| tst_count = 0; |
| |
| /* Set the offset position */ |
| offset = file_size + (lc * strlen(write_buf2)); |
| |
| /* |
| * Invoke lseek(2) to move the write file |
| * pointer/handle by the specified offset value. |
| */ |
| TEST(lseek(fildes, offset, SEEK_SET)); |
| |
| if (TEST_RETURN == (off_t) - 1) { |
| tst_resm(TFAIL | TTERRNO, "lseek on (%s) failed", |
| TEMP_FILE); |
| continue; |
| } |
| /* |
| * Check if the return value from lseek(2) |
| * is equal to the specified offset value. |
| */ |
| if (TEST_RETURN != offset) { |
| tst_resm(TFAIL, "lseek() returned " |
| "incorrect value %ld, expected " |
| "%" PRId64, TEST_RETURN, |
| (int64_t) offset); |
| continue; |
| } |
| /* |
| * The return value is okay, now write some data at |
| * the current offset position. |
| */ |
| if (write(fildes, write_buf2, strlen(write_buf2)) != |
| strlen(write_buf2)) { |
| tst_brkm(TFAIL | TERRNO, cleanup, |
| "write() failed to write additional data"); |
| } |
| |
| /* |
| * Now close the file and open it again |
| * and read all of the data. |
| */ |
| if (close(fildes) < 0) { |
| tst_brkm(TFAIL, cleanup, "close() on %s Failed," |
| " errno = %d", TEMP_FILE, errno); |
| } |
| |
| /* Open the file again in read/write mode */ |
| if ((fildes = open(TEMP_FILE, O_RDWR)) < 0) { |
| tst_brkm(TFAIL, cleanup, "Could not open the " |
| "%s readonly, error = %d", |
| TEMP_FILE, errno); |
| } |
| |
| /* |
| * Now read all of the data. The size should be the |
| * offset + strlen(write_buf2). |
| */ |
| if (read(fildes, &read_buf, (offset + |
| strlen(write_buf2))) < 0) { |
| tst_brkm(TFAIL, cleanup, "read() failed on %s, " |
| "error=%d", TEMP_FILE, errno); |
| } else { |
| /* |
| * Check data read is the complete data and not |
| * the only portion written. |
| */ |
| if ((strncmp(read_buf, write_buf1, |
| strlen(write_buf1))) != 0) { |
| tst_brkm(TFAIL, cleanup, |
| "Incorrect data read #1 from " |
| "file %s", TEMP_FILE); |
| } |
| if ((strncmp(&read_buf[offset], write_buf2, |
| strlen(write_buf2))) != 0) { |
| tst_brkm(TFAIL, cleanup, |
| "Incorrect data read #2 from " |
| "file %s", TEMP_FILE); |
| } |
| tst_resm(TPASS, "Functionality of " |
| "lseek() on %s successful", TEMP_FILE); |
| } |
| } |
| |
| cleanup(); |
| tst_exit(); |
| } |
| |
| /* |
| * 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. |
| * Get the size of the file using fstat(). |
| */ |
| void setup(void) |
| { |
| struct stat stat_buf; /* struct buffer for stat(2) */ |
| |
| tst_sig(NOFORK, DEF_HANDLER, cleanup); |
| |
| TEST_PAUSE; |
| |
| tst_tmpdir(); |
| |
| /* Get the data to be written to temporary file */ |
| strcpy(write_buf1, "abcdefg"); |
| strcpy(write_buf2, "ijk"); |
| |
| /* Creat/open a temporary file for writing under above directory */ |
| if ((fildes = open(TEMP_FILE, O_WRONLY | O_CREAT, FILE_MODE)) == -1) { |
| tst_brkm(TBROK, cleanup, |
| "open(%s, O_WRONLY|O_CREAT, %#o) Failed, errno=%d :%s", |
| TEMP_FILE, FILE_MODE, errno, strerror(errno)); |
| } |
| |
| /* Write data into temporary file */ |
| if (write(fildes, write_buf1, strlen(write_buf1)) != strlen(write_buf1)) { |
| tst_brkm(TBROK, cleanup, "write(2) on %s Failed, errno=%d : %s", |
| TEMP_FILE, errno, strerror(errno)); |
| } |
| |
| /* Get the size of the temporary file after writing data */ |
| if (fstat(fildes, &stat_buf) < 0) { |
| tst_brkm(TBROK, cleanup, "fstat() on %s Failed, errno=%d : %s", |
| TEMP_FILE, errno, strerror(errno)); |
| } |
| |
| file_size = stat_buf.st_size; |
| } |
| |
| /* |
| * 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 created */ |
| if (close(fildes) < 0) { |
| tst_brkm(TFAIL, NULL, "close(%s) Failed, errno=%d : %s:", |
| TEMP_FILE, errno, strerror(errno)); |
| } |
| |
| tst_rmdir(); |
| |
| } |