| /* |
| * |
| * 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: llseek01 |
| * |
| * Test Description: |
| * Verify that, llseek() call succeeds to set the file pointer position |
| * to an offset larger than file size. Also, verify that any attempt |
| * to write to this location fails. |
| * |
| * Expected result: |
| * llseek() should return the offset from the beginning of the file measured |
| * in bytes. Attempt to write to the location ( > file size) should fail. |
| * |
| * 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> |
| * llseek01 [-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. |
| */ |
| |
| #ifndef _GNU_SOURCE |
| #define _GNU_SOURCE |
| #endif |
| |
| #include <unistd.h> |
| #include <errno.h> |
| #include <unistd.h> |
| #include <fcntl.h> |
| #include <utime.h> |
| #include <string.h> |
| #include <signal.h> |
| #include <sys/resource.h> |
| #include <sys/stat.h> |
| #include <sys/types.h> |
| #include <inttypes.h> |
| |
| #include "test.h" |
| #include "safe_macros.h" |
| |
| #define TEMP_FILE "tmp_file" |
| #define FILE_MODE 0644 |
| |
| char *TCID = "llseek01"; |
| int TST_TOTAL = 1; |
| char write_buff[BUFSIZ]; /* buffer to hold data */ |
| int fildes; /* file handle for temp file */ |
| |
| struct rlimit rlp_orig; /* resource for original file size limit */ |
| |
| 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; |
| loff_t offset; /* Ret value from llseek */ |
| |
| if ((msg = parse_opts(ac, av, NULL, NULL)) != NULL) |
| tst_brkm(TBROK, NULL, "OPTION PARSING ERROR - %s", msg); |
| |
| offset = -1; |
| |
| setup(); |
| |
| for (lc = 0; TEST_LOOPING(lc); lc++) { |
| |
| tst_count = 0; |
| |
| /* |
| * set file size limit, seek to a file using llseek. |
| */ |
| TEST(lseek64(fildes, (loff_t) (80 * BUFSIZ), SEEK_SET)); |
| |
| if (TEST_RETURN == (loff_t) - 1) { |
| tst_resm(TFAIL, "llseek on (%s) Failed, errno=%d : %s", |
| TEMP_FILE, TEST_ERRNO, strerror(TEST_ERRNO)); |
| continue; |
| } |
| |
| if (TEST_RETURN != (loff_t) (80 * BUFSIZ)) { |
| tst_resm(TFAIL, "llseek() returned incorrect " |
| "value %" PRId64 ", expected %d", |
| (int64_t) offset, BUFSIZ); |
| continue; |
| } |
| |
| /* |
| * llseek() successful. Now attempt to write past |
| * file size limit. |
| */ |
| if (write(fildes, write_buff, BUFSIZ) != -1) { |
| tst_brkm(TFAIL, cleanup, "write successful " |
| "after file size limit"); |
| } |
| |
| /* Seeking to end of last valid write */ |
| offset = lseek64(fildes, (loff_t) BUFSIZ, SEEK_SET); |
| if (offset != (loff_t) BUFSIZ) { |
| tst_brkm(TFAIL, cleanup, |
| "llseek under file size limit"); |
| } |
| |
| /* |
| * llseek() successful. Now, attempt to write to |
| * file size limit. |
| */ |
| if (write(fildes, write_buff, BUFSIZ) != BUFSIZ) { |
| tst_brkm(TFAIL, cleanup, "write failed to " |
| "write to file size limit"); |
| } |
| |
| /* |
| * Again, attempt to write past file size limit. |
| */ |
| if (write(fildes, write_buff, BUFSIZ) != -1) { |
| tst_brkm(TFAIL, cleanup, "write past file " |
| "size limit successful"); |
| } |
| |
| tst_resm(TPASS, "Functionality of llseek() on %s " |
| "successful", TEMP_FILE); |
| } |
| |
| cleanup(); |
| tst_exit(); |
| } |
| |
| void setup(void) |
| { |
| struct sigaction act; /* struct. to hold signal */ |
| struct rlimit rlp; /* resource for file size limit */ |
| |
| tst_sig(NOFORK, DEF_HANDLER, cleanup); |
| |
| TEST_PAUSE; |
| |
| act.sa_handler = SIG_IGN; |
| act.sa_flags = 0; |
| sigemptyset(&act.sa_mask); |
| if (sigaction(SIGXFSZ, &act, NULL) == -1) { |
| tst_brkm(TFAIL, NULL, "sigaction() Failed to ignore SIGXFSZ"); |
| } |
| |
| tst_tmpdir(); |
| |
| /* Store the original rlimit */ |
| if (getrlimit(RLIMIT_FSIZE, &rlp_orig) == -1) |
| tst_brkm(TBROK, cleanup, |
| "Cannot get max. file size using getrlimit"); |
| |
| /* Set limit low, argument is # bytes */ |
| rlp.rlim_cur = rlp.rlim_max = 2 * BUFSIZ; |
| |
| if (setrlimit(RLIMIT_FSIZE, &rlp) == -1) |
| tst_brkm(TBROK, cleanup, |
| "Cannot set max. file size using setrlimit"); |
| |
| /* Creat/open 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, 0644) Failed, errno=%d :%s", |
| TEMP_FILE, errno, strerror(errno)); |
| } |
| |
| SAFE_WRITE(cleanup, 1, fildes, write_buff, BUFSIZ); |
| } |
| |
| void cleanup(void) |
| { |
| SAFE_CLOSE(NULL, fildes); |
| |
| tst_rmdir(); |
| |
| if (setrlimit(RLIMIT_FSIZE, &rlp_orig) == -1) |
| tst_brkm(TBROK, NULL, |
| "Cannot reset max. file size using setrlimit"); |
| |
| } |