| /* |
| * Copyright (c) Wipro Technologies Ltd, 2002. All Rights Reserved. |
| * |
| * This program is free software; you can redistribute it and/or modify it |
| * under the terms of version 2 of the GNU General Public License as |
| * published by the Free Software Foundation. |
| * |
| * This program is distributed in the hope that it would be useful, but |
| * WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. |
| * |
| * You should have received a copy of the GNU General Public License along |
| * with this program; if not, write the Free Software Foundation, Inc., 59 |
| * Temple Place - Suite 330, Boston MA 02111-1307, USA. |
| * |
| */ |
| /********************************************************** |
| * |
| * TEST IDENTIFIER : clone03 |
| * |
| * EXECUTED BY : anyone |
| * |
| * TEST TITLE : test for clone(2) |
| * |
| * TEST CASE TOTAL : 1 |
| * |
| * AUTHOR : Saji Kumar.V.R <saji.kumar@wipro.com> |
| * |
| * SIGNALS |
| * Uses SIGUSR1 to pause before test if option set. |
| * (See the parse_opts(3) man page). |
| * |
| * DESCRIPTION |
| * Check for equality of pid of child & return value of clone(2) |
| * |
| * Setup: |
| * Setup signal handling. |
| * Pause for SIGUSR1 if option specified. |
| * |
| * Test: |
| * Open a pipe. |
| * Loop if the proper options are given. |
| * Call clone(2) called without SIGCHLD |
| * |
| * CHILD: |
| * writes the pid to pipe |
| * PARENT: |
| * reads child'd pid from pipe |
| * if child's pid == return value from clone(2) |
| * Test passed |
| * else |
| * test failed |
| * Cleanup: |
| * Print errno log and/or timing stats if options given |
| * |
| * USAGE: <for command-line> |
| * clone03 [-c n] [-e] [-i n] [-I x] [-P x] [-t] [-h] [-f] [-p] |
| * where, -c n : Run n copies concurrently. |
| * -e : Turn on errno logging. |
| * -h : Show help screen |
| * -f : Turn off functional testing |
| * -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. |
| * |
| ****************************************************************/ |
| |
| #if defined UCLINUX && !__THROW |
| /* workaround for libc bug */ |
| #define __THROW |
| #endif |
| |
| #include <errno.h> |
| #include <sched.h> |
| #include "test.h" |
| #include "usctest.h" |
| |
| #include "clone_platform.h" |
| |
| static void setup(); |
| static void cleanup(); |
| static int child_fn(); |
| |
| static int pfd[2]; |
| |
| char *TCID = "clone03"; /* Test program identifier. */ |
| int TST_TOTAL = 1; /* Total number of test cases. */ |
| extern int Tst_count; /* Test Case counter for tst_* routines */ |
| |
| int main(int ac, char **av) |
| { |
| |
| int lc; /* loop counter */ |
| char *msg; /* message returned from parse_opts */ |
| void *child_stack; /* stack for child */ |
| char buff[10]; |
| int child_pid; |
| |
| /* parse standard options */ |
| if ((msg = parse_opts(ac, av, NULL, NULL)) != NULL) { |
| tst_brkm(TBROK, NULL, "OPTION PARSING ERROR - %s", msg); |
| } |
| |
| /* perform global setup for test */ |
| setup(); |
| |
| /* Allocate stack for child */ |
| if ((child_stack = (void *)malloc(CHILD_STACK_SIZE)) == NULL) { |
| tst_brkm(TBROK, cleanup, "Cannot allocate stack for child"); |
| } |
| |
| /* check looping state if -i option given */ |
| for (lc = 0; TEST_LOOPING(lc); lc++) { |
| |
| /* reset Tst_count in case we are looping. */ |
| Tst_count = 0; |
| |
| /* Open a pipe */ |
| if ((pipe(pfd)) == -1) { |
| tst_brkm(TBROK|TERRNO, cleanup, "pipe() failed"); |
| } |
| |
| /* |
| * Call clone(2) |
| */ |
| TEST(ltp_clone(0, child_fn, NULL, CHILD_STACK_SIZE, |
| child_stack)); |
| |
| /* check return code */ |
| if (TEST_RETURN == -1) { |
| tst_resm(TFAIL|TTERRNO, "clone() failed"); |
| cleanup(); |
| } |
| |
| /* close write end from parent */ |
| if ((close(pfd[1])) == -1) { |
| tst_brkm(TBROK|TERRNO, cleanup, "close(pfd[1]) failed"); |
| } |
| |
| /* Read pid from read end */ |
| if ((read(pfd[0], buff, sizeof(buff))) == -1) { |
| tst_brkm(TBROK|TERRNO, cleanup, "read from pipe failed"); |
| } |
| |
| /* Close read end from parent */ |
| if ((close(pfd[0])) == -1) { |
| tst_resm(TWARN|TERRNO, "close(pfd[0]) failed"); |
| } |
| |
| /* Get child's pid from pid string */ |
| child_pid = atoi(buff); |
| |
| if (TEST_RETURN == child_pid) { |
| tst_resm(TPASS, "Test passed"); |
| } else { |
| tst_resm(TFAIL, "Test failed"); |
| } |
| |
| } /* End for TEST_LOOPING */ |
| |
| free(child_stack); |
| /* cleanup and exit */ |
| cleanup(); |
| |
| /*NOTREACHED*/ return 0; |
| |
| } /* End main */ |
| |
| /* setup() - performs all ONE TIME setup for this test */ |
| void setup() |
| { |
| |
| /* capture signals */ |
| tst_sig(NOFORK, DEF_HANDLER, cleanup); |
| |
| /* Pause if that option was specified */ |
| TEST_PAUSE; |
| |
| } /* End setup() */ |
| |
| /* |
| *cleanup() - performs all ONE TIME cleanup for this test at |
| * completion or premature exit. |
| */ |
| void cleanup() |
| { |
| |
| /* |
| * print timing stats if that option was specified. |
| * print errno log if that option was specified. |
| */ |
| TEST_CLEANUP; |
| |
| /* exit with return code appropriate for results */ |
| tst_exit(); |
| } /* End cleanup() */ |
| |
| /* |
| * child_fn() - function executed by child |
| */ |
| |
| int child_fn(void) |
| { |
| |
| char pid[10]; |
| |
| /* Close read end from child */ |
| if ((close(pfd[0])) == -1) { |
| tst_brkm(TBROK|TERRNO, cleanup, "close(pfd[0]) failed"); |
| } |
| |
| /* Construct pid string */ |
| sprintf(pid, "%d", getpid()); |
| |
| /* Write pid string to pipe */ |
| if ((write(pfd[1], pid, sizeof(pid))) == -1) { |
| tst_brkm(TBROK|TERRNO, cleanup, "write to pipe failed"); |
| } |
| |
| /* Close write end of pipe from child */ |
| if ((close(pfd[1])) == -1) { |
| tst_resm(TWARN|TERRNO, "close(pfd[1]) failed"); |
| } |
| exit(1); |
| } |