| /* |
| * |
| * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| */ |
| |
| /* |
| * NAME |
| * signal04.c |
| * |
| * DESCRIPTION |
| * signal04 - restore signals to default behavior |
| * |
| * ALGORITHM |
| * loop if that option was specified |
| * for each signal in siglist[] |
| * set the signal handler to our own and save the return value |
| * issue the signal system call to restore the default behavior |
| * check the return value |
| * if return value == -1 |
| * issue a FAIL message, break remaining tests and cleanup |
| * if we are doing functional testing |
| * set the signal handler to our own again and save second return value |
| * if the first return value matches the second return value |
| * issue a PASS message |
| * else |
| * issue a FAIL message |
| * call cleanup |
| * |
| * USAGE: <for command-line> |
| * signal04 [-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 John George |
| * -Ported |
| * |
| * Restrictions |
| * none |
| */ |
| |
| #include "test.h" |
| #include "usctest.h" |
| |
| #include <errno.h> |
| #include <signal.h> |
| |
| void cleanup(void); |
| void setup(void); |
| void sighandler(int); |
| |
| char *TCID = "signal04"; |
| extern int Tst_count; |
| |
| int siglist[] = { SIGHUP, SIGINT, SIGQUIT, SIGILL, SIGTRAP, SIGABRT, |
| SIGBUS, SIGFPE, SIGUSR1, SIGSEGV, SIGUSR2, SIGPIPE, SIGALRM, |
| SIGTERM, SIGCHLD, SIGCONT, SIGTSTP, SIGTTIN, |
| SIGTTOU, SIGURG, SIGXCPU, SIGXFSZ, SIGVTALRM, SIGPROF, |
| SIGWINCH, SIGIO, SIGPWR, SIGSYS |
| }; |
| |
| int TST_TOTAL = sizeof(siglist) / sizeof(int); |
| |
| typedef void (*sighandler_t) (int); |
| |
| sighandler_t Tret; |
| |
| int main(int ac, char **av) |
| { |
| int lc; /* loop counter */ |
| char *msg; /* message returned from parse_opts */ |
| int i; |
| sighandler_t rval, first; |
| |
| /* parse standard options */ |
| if ((msg = parse_opts(ac, av, NULL, NULL)) != NULL) { |
| tst_brkm(TBROK, NULL, "OPTION PARSING ERROR - %s", msg); |
| /*NOTREACHED*/} |
| |
| setup(); /* global setup */ |
| |
| /* The following loop checks looping state if -i option given */ |
| |
| for (lc = 0; TEST_LOOPING(lc); lc++) { |
| /* reset Tst_count in case we are looping */ |
| Tst_count = 0; |
| |
| /* |
| * loop through the list of signals and test each one |
| */ |
| for (i = 0; i < TST_TOTAL; i++) { |
| |
| /* First reset the signal to the default |
| action to clear out any pre-test |
| execution settings */ |
| signal(siglist[i], SIG_DFL); |
| |
| /* then set the handler to our own handler */ |
| if ((rval = signal(siglist[i], &sighandler)) == SIG_ERR) { |
| tst_brkm(TBROK, cleanup, "initial signal call" |
| " failed"); |
| /*NOTREACHED*/} |
| |
| /* store the return value */ |
| first = rval; |
| |
| /* restore the default signal action */ |
| errno = 0; |
| Tret = signal(siglist[i], SIG_DFL); |
| TEST_ERRNO = errno; |
| |
| if (Tret == SIG_ERR) { |
| tst_brkm(TFAIL, cleanup, "%s call failed - " |
| "errno = %d : %s", TCID, TEST_ERRNO, |
| strerror(TEST_ERRNO)); |
| /*NOTREACHED*/} |
| |
| if (STD_FUNCTIONAL_TEST) { |
| /* now set the handler back to our own */ |
| if ((rval = signal(siglist[i], &sighandler)) |
| == SIG_ERR) { |
| tst_brkm(TBROK, cleanup, "initial " |
| "signal call failed"); |
| /*NOTREACHED*/} |
| |
| /* |
| * the first return value should equal the |
| * second one. |
| */ |
| if (rval == first) { |
| tst_resm(TPASS, "%s call succeeded " |
| "received %p.", TCID, rval); |
| } else { |
| tst_brkm(TFAIL, cleanup, "return " |
| "values for signal(%d) don't " |
| "match. Got %p, expected %p.", |
| siglist[i], rval, first); |
| /*NOTREACHED*/} |
| } else { |
| tst_resm(TPASS, "Call of signal(%d) succeeded", |
| siglist[i]); |
| } |
| } |
| } |
| |
| cleanup(); |
| /*NOTREACHED*/ return 0; |
| |
| } |
| |
| /* |
| * sighandler() - handle the signals |
| */ |
| void sighandler(int sig) |
| { |
| } |
| |
| /* |
| * setup() - performs all the ONE TIME setup for this test. |
| */ |
| void setup(void) |
| { |
| /* Pause if that option was specified */ |
| TEST_PAUSE; |
| } |
| |
| /* |
| * cleanup() - performs all the 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; |
| |
| /* exit with return code appropriate for results */ |
| tst_exit(); |
| } |