| /* |
| * |
| * 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: sigsuspend01 |
| * |
| * Test Description: |
| * Verify that sigsuspend() succeeds to change process's current signal |
| * mask with the specified signal mask and suspends the process execution |
| * until the delivery of a signal. |
| * |
| * Expected Result: |
| * sigsuspend() should return after the execution of signal catching |
| * function and the previous signal mask should be restored. |
| * |
| * 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> |
| * sigsuspend01 [-c n] [-e] [-f] [-i n] [-I x] [-p x] [-t] |
| * where, -c n : Run n copies concurrently. |
| * -e : Turn on errno logging. |
| * -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 <ucontext.h> |
| |
| #include "test.h" |
| |
| char *TCID = "sigsuspend01"; |
| int TST_TOTAL = 1; |
| |
| struct sigaction sa_new; /* struct to hold signal info */ |
| sigset_t signalset; /* signal set to hold signal lists */ |
| sigset_t sigset1; |
| sigset_t sigset2; |
| |
| void setup(); /* Main setup function of test */ |
| void cleanup(); /* cleanup function for the test */ |
| void sig_handler(int sig); /* signal catching function */ |
| |
| int main(int ac, char **av) |
| { |
| int lc; |
| |
| tst_parse_opts(ac, av, NULL, NULL); |
| |
| setup(); |
| |
| for (lc = 0; TEST_LOOPING(lc); lc++) { |
| |
| tst_count = 0; |
| |
| /* Set the alarm timer */ |
| alarm(5); |
| |
| /* |
| * Call sigsuspend() to replace current signal mask |
| * of the process and suspend process execution till |
| * receipt of a signal 'SIGALRM'. |
| */ |
| TEST(sigsuspend(&signalset)); |
| |
| /* Reset the alarm timer */ |
| alarm(0); |
| |
| if ((TEST_RETURN == -1) && (TEST_ERRNO == EINTR)) { |
| if (sigprocmask(SIG_UNBLOCK, 0, &sigset2) == -1) { |
| tst_resm(TFAIL, "sigprocmask() Failed " |
| "to get previous signal mask " |
| "of process"); |
| } else if (memcmp(&sigset1, &sigset2, |
| sizeof(unsigned long))) { |
| tst_resm(TFAIL, "sigsuspend failed to " |
| "preserve signal mask"); |
| } else { |
| tst_resm(TPASS, "Functionality of " |
| "sigsuspend() successful"); |
| } |
| } else { |
| tst_resm(TFAIL | TTERRNO, |
| "sigsuspend() returned value %ld", |
| TEST_RETURN); |
| } |
| |
| tst_count++; /* incr TEST_LOOP counter */ |
| } |
| |
| cleanup(); |
| tst_exit(); |
| } |
| |
| /* |
| * void |
| * setup() - performs all ONE TIME setup for this test. |
| * Initialise signal set with the list that includes/excludes |
| * all system-defined signals. |
| * Set the signal handler to catch SIGALRM signal. |
| * Get the current signal mask of test process using sigprocmask(). |
| */ |
| void setup(void) |
| { |
| |
| tst_sig(FORK, DEF_HANDLER, cleanup); |
| |
| TEST_PAUSE; |
| |
| /* |
| * Initialise the signal sets with the list that |
| * excludes/includes all system-defined signals. |
| */ |
| if (sigemptyset(&signalset) == -1) { |
| tst_brkm(TFAIL, cleanup, |
| "sigemptyset() failed, errno=%d : %s", |
| errno, strerror(errno)); |
| } |
| if (sigfillset(&sigset2) == -1) { |
| tst_brkm(TFAIL, cleanup, |
| "sigfillset() failed, errno=%d : %s", |
| errno, strerror(errno)); |
| } |
| |
| /* Set the signal handler function to catch the signal */ |
| sa_new.sa_handler = sig_handler; |
| if (sigaction(SIGALRM, &sa_new, 0) == -1) { |
| tst_brkm(TFAIL, cleanup, |
| "sigaction() failed, errno=%d : %s", |
| errno, strerror(errno)); |
| } |
| |
| /* Read the test process's current signal mask. */ |
| if (sigprocmask(SIG_UNBLOCK, 0, &sigset1) == -1) { |
| tst_brkm(TFAIL, cleanup, |
| "sigprocmask() Failed, errno=%d : %s", |
| errno, strerror(errno)); |
| } |
| } |
| |
| /* |
| * void |
| * sig_handler(int sig) - Signal catching function. |
| * This function gets executed when the signal SIGALRM is delivered |
| * to the test process after the expiry of alarm time and the signal was |
| * trapped by sigaction() to execute this function. |
| * |
| * This function simply returns without doing anything. |
| */ |
| void sig_handler(int sig) |
| { |
| } |
| |
| /* |
| * void |
| * cleanup() - performs all ONE TIME cleanup for this test at |
| * completion or premature exit. |
| */ |
| void cleanup(void) |
| { |
| |
| } |