| /* |
| * |
| * Copyright (c) Matthew Wilcox for Hewlett Packard 2003 |
| * |
| * 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 IDENTIFIER : flock06 |
| * |
| * EXECUTED BY : anyone |
| * |
| * TEST TITLE : Error condition test for flock(2) |
| * |
| * TEST CASE TOTAL : 1 |
| * |
| * AUTHOR : Matthew Wilcox <willy@debian.org> |
| * |
| * SIGNALS |
| * Uses SIGUSR1 to pause before test if option set. |
| * (See the parse_opts(3) man page). |
| * |
| * DESCRIPTION |
| * This test verifies that flock locks held on one fd conflict with |
| * flock locks held on a different fd. |
| * |
| * Test: |
| * The process opens two file descriptors on the same file. |
| * It acquires an exclusive flock on the first descriptor, |
| * checks that attempting to acquire an flock on the second |
| * descriptor fails. Then it removes the first descriptor's |
| * lock and attempts to acquire an exclusive lock on the |
| * second descriptor. |
| * |
| * USAGE: <for command-line> |
| * flock06 [-c n] [-e] [-i n] [-I x] [-P x] [-t] [-h] [-f] [-p] |
| * where, -c n : Run n copies concurrently |
| * -f : Turn off functional testing |
| * -e : Turn on errno logging |
| * -h : Show help screen |
| * -i n : Execute test n times |
| * -I x : Execute test for x seconds |
| * -p : Pause for SIGUSR1 before starting |
| * -P x : Pause for x seconds between iterations |
| * -t : Turn on syscall timing |
| * |
| ****************************************************************/ |
| |
| #include <stdio.h> |
| #include <errno.h> |
| #include <fcntl.h> |
| #include <sys/types.h> |
| #include <sys/stat.h> |
| #include <sys/file.h> |
| #include <sys/wait.h> |
| #include "test.h" |
| #include "usctest.h" |
| |
| void setup(void); |
| void cleanup(void); |
| |
| char *TCID = "flock06"; |
| int TST_TOTAL = 3; |
| char filename[100]; |
| |
| int main(int argc, char **argv) |
| { |
| int lc; |
| char *msg; |
| |
| if ((msg = parse_opts(argc, argv, NULL, NULL)) != NULL) { |
| tst_brkm(TBROK, NULL, "OPTION PARSING ERROR - %s", msg); |
| } |
| |
| setup(); |
| |
| /* The following loop checks looping state if -i option given */ |
| |
| for (lc = 0; TEST_LOOPING(lc); lc++) { |
| int fd1, fd2; |
| |
| /* reset tst_count in case we are looping */ |
| tst_count = 0; |
| |
| fd1 = open(filename, O_RDWR); |
| if (fd1 == -1) |
| tst_brkm(TFAIL, cleanup, "failed to open the" |
| "file, errno %d", errno); |
| |
| TEST(flock(fd1, LOCK_EX | LOCK_NB)); |
| if (TEST_RETURN != 0) |
| tst_resm(TFAIL, "First attempt to flock() failed, " |
| "errno %d", TEST_ERRNO); |
| else |
| tst_resm(TPASS, "First attempt to flock() passed"); |
| |
| fd2 = open(filename, O_RDWR); |
| if (fd2 == -1) |
| tst_brkm(TFAIL, cleanup, "failed to open the" |
| "file, errno %d", errno); |
| |
| TEST(flock(fd2, LOCK_EX | LOCK_NB)); |
| if (TEST_RETURN == -1) |
| tst_resm(TPASS, "Second attempt to flock() denied"); |
| else |
| tst_resm(TFAIL, "Second attempt to flock() succeeded!"); |
| |
| TEST(flock(fd1, LOCK_UN)); |
| if (TEST_RETURN == -1) |
| tst_resm(TFAIL, "Failed to unlock fd1, errno %d", |
| TEST_ERRNO); |
| else |
| tst_resm(TPASS, "Unlocked fd1"); |
| |
| TEST(flock(fd2, LOCK_EX | LOCK_NB)); |
| if (TEST_RETURN == -1) |
| tst_resm(TFAIL, "Third attempt to flock() denied!"); |
| else |
| tst_resm(TPASS, "Third attempt to flock() succeeded"); |
| close(fd1); |
| close(fd2); |
| |
| } |
| |
| cleanup(); |
| tst_exit(); |
| |
| } |
| |
| /* |
| * setup() |
| * performs all ONE TIME setup for this test |
| */ |
| void setup(void) |
| { |
| int fd; |
| |
| tst_sig(FORK, 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; |
| |
| /* Create a unique temporary directory and chdir() to it. */ |
| tst_tmpdir(); |
| |
| sprintf(filename, "flock06.%d", getpid()); |
| |
| /* creating temporary file */ |
| fd = creat(filename, 0666); |
| if (fd < 0) { |
| tst_resm(TFAIL, "creating a new file failed"); |
| |
| TEST_CLEANUP; |
| |
| /* Removing temp dir */ |
| tst_rmdir(); |
| |
| tst_exit(); |
| } |
| close(fd); |
| } |
| |
| /* |
| * cleanup() |
| * performs all ONE TIME cleanup for this test at |
| * completion or premature exit |
| */ |
| void cleanup(void) |
| { |
| /* |
| * print timing stats if that option was specified. |
| * print errno log if that option was specified. |
| */ |
| TEST_CLEANUP; |
| |
| unlink(filename); |
| tst_rmdir(); |
| |
| } |