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minix3/tests/test37.c

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/* test 37 - signals */
#include <sys/types.h>
#include <sys/times.h>
#include <sys/wait.h>
#include <errno.h>
#include <signal.h>
#include <setjmp.h>
#include <stdlib.h>
#include <unistd.h>
#include <stdio.h>
#include <assert.h>
#define ITERATIONS 2
#define SIGS 14
int max_error = 4;
#include "common.h"
int iteration, cumsig, sig1, sig2;
int sigarray[SIGS] = {SIGHUP, SIGILL, SIGTRAP, SIGABRT, SIGIOT,
SIGFPE, SIGUSR1, SIGSEGV, SIGUSR2, SIGPIPE, SIGALRM,
SIGTERM};
/* Prototypes produced automatically by mkptypes. */
int main(int argc, char *argv []);
void test37a(void);
void func1(int sig);
void func2(int sig);
void test37b(void);
void catch1(int signo);
void catch2(int signo);
void test37c(void);
void catch3(int signo);
void test37d(void);
void catch4(int signo);
void test37e(void);
void catch5(int signo);
void test37f(void);
void sigint_handler(int signo);
void sigpipe_handler(int signo);
void test37g(void);
void sighup8(int signo);
void sigpip8(int signo);
void sigter8(int signo);
void test37h(void);
void sighup9(int signo);
void sigter9(int signo);
void test37i(void);
void sighup10(int signo);
void sigalrm_handler10(int signo);
void test37j(void);
void test37k(void);
void test37l(void);
void func_m1(void);
void func_m2(void);
void test37m(void);
void test37p(void);
void test37q(void);
void longjerr(void);
void catch14(int signo, int code, struct sigcontext * scp);
void test37n(void);
void catch15(int signo);
void test37o(void);
void clearsigstate(void);
void wait_for(int pid);
int main(argc, argv)
int argc;
char *argv[];
{
int i, m = 0377777;
sync();
start(37);
if (argc == 2) m = atoi(argv[1]);
for (i = 0; i < ITERATIONS; i++) {
iteration = i;
if (m & 0000001) test37a();
if (m & 0000002) test37b();
if (m & 0000004) test37c();
if (m & 0000010) test37d();
if (m & 0000020) test37e();
if (m & 0000040) test37f();
if (m & 0000100) test37g();
if (m & 0000200) test37h();
if (m & 0000400) test37i();
if (m & 0001000) test37j();
if (m & 0002000) test37k();
if (m & 0004000) test37l();
if (m & 0010000) test37m();
if (m & 0020000) test37n();
if (m & 0040000) test37o();
if (m & 0100000) test37p();
if (m & 0200000) test37q();
}
quit();
return(-1); /* Unreachable */
}
void test37a()
{
/* Test signal set management. */
sigset_t s;
subtest = 1;
clearsigstate();
/* Create an empty set and see if any bits are on. */
if (sigemptyset(&s) != 0) e(1);
if (sigismember(&s, SIGHUP) != 0) e(2);
if (sigismember(&s, SIGINT) != 0) e(3);
if (sigismember(&s, SIGQUIT) != 0) e(4);
if (sigismember(&s, SIGILL) != 0) e(5);
if (sigismember(&s, SIGTRAP) != 0) e(6);
if (sigismember(&s, SIGABRT) != 0) e(7);
if (sigismember(&s, SIGIOT) != 0) e(8);
if (sigismember(&s, SIGFPE) != 0) e(10);
if (sigismember(&s, SIGKILL) != 0) e(11);
if (sigismember(&s, SIGUSR1) != 0) e(12);
if (sigismember(&s, SIGSEGV) != 0) e(13);
if (sigismember(&s, SIGUSR2) != 0) e(14);
if (sigismember(&s, SIGPIPE) != 0) e(15);
if (sigismember(&s, SIGALRM) != 0) e(16);
if (sigismember(&s, SIGTERM) != 0) e(17);
if (sigismember(&s, SIGPWR) != 0) e(17);
/* Create a full set and see if any bits are off. */
if (sigfillset(&s) != 0) e(19);
if (sigemptyset(&s) != 0) e(20);
if (sigfillset(&s) != 0) e(21);
if (sigismember(&s, SIGHUP) != 1) e(22);
if (sigismember(&s, SIGINT) != 1) e(23);
if (sigismember(&s, SIGQUIT) != 1) e(24);
if (sigismember(&s, SIGILL) != 1) e(25);
if (sigismember(&s, SIGTRAP) != 1) e(26);
if (sigismember(&s, SIGABRT) != 1) e(27);
if (sigismember(&s, SIGIOT) != 1) e(28);
if (sigismember(&s, SIGFPE) != 1) e(30);
if (sigismember(&s, SIGKILL) != 1) e(31);
if (sigismember(&s, SIGUSR1) != 1) e(32);
if (sigismember(&s, SIGSEGV) != 1) e(33);
if (sigismember(&s, SIGUSR2) != 1) e(34);
if (sigismember(&s, SIGPIPE) != 1) e(35);
if (sigismember(&s, SIGALRM) != 1) e(36);
if (sigismember(&s, SIGTERM) != 1) e(37);
if (sigismember(&s, SIGPWR) != 1) e(37);
/* Create an empty set, then turn on bits individually. */
if (sigemptyset(&s) != 0) e(39);
if (sigaddset(&s, SIGHUP) != 0) e(40);
if (sigaddset(&s, SIGINT) != 0) e(41);
if (sigaddset(&s, SIGQUIT) != 0) e(42);
if (sigaddset(&s, SIGILL) != 0) e(43);
if (sigaddset(&s, SIGTRAP) != 0) e(44);
if (sigaddset(&s, SIGPWR) != 0) e(44);
/* See if the bits just turned on are indeed on. */
if (sigismember(&s, SIGHUP) != 1) e(45);
if (sigismember(&s, SIGINT) != 1) e(46);
if (sigismember(&s, SIGQUIT) != 1) e(47);
if (sigismember(&s, SIGILL) != 1) e(48);
if (sigismember(&s, SIGTRAP) != 1) e(49);
if (sigismember(&s, SIGPWR) != 1) e(49);
/* The others should be turned off. */
if (sigismember(&s, SIGABRT) != 0) e(50);
if (sigismember(&s, SIGIOT) != 0) e(51);
if (sigismember(&s, SIGFPE) != 0) e(53);
if (sigismember(&s, SIGKILL) != 0) e(54);
if (sigismember(&s, SIGUSR1) != 0) e(55);
if (sigismember(&s, SIGSEGV) != 0) e(56);
if (sigismember(&s, SIGUSR2) != 0) e(57);
if (sigismember(&s, SIGPIPE) != 0) e(58);
if (sigismember(&s, SIGALRM) != 0) e(59);
if (sigismember(&s, SIGTERM) != 0) e(60);
/* Now turn them off and see if all are off. */
if (sigdelset(&s, SIGHUP) != 0) e(62);
if (sigdelset(&s, SIGINT) != 0) e(63);
if (sigdelset(&s, SIGQUIT) != 0) e(64);
if (sigdelset(&s, SIGILL) != 0) e(65);
if (sigdelset(&s, SIGTRAP) != 0) e(66);
if (sigdelset(&s, SIGPWR) != 0) e(66);
if (sigismember(&s, SIGHUP) != 0) e(67);
if (sigismember(&s, SIGINT) != 0) e(68);
if (sigismember(&s, SIGQUIT) != 0) e(69);
if (sigismember(&s, SIGILL) != 0) e(70);
if (sigismember(&s, SIGTRAP) != 0) e(71);
if (sigismember(&s, SIGABRT) != 0) e(72);
if (sigismember(&s, SIGIOT) != 0) e(73);
if (sigismember(&s, SIGFPE) != 0) e(75);
if (sigismember(&s, SIGKILL) != 0) e(76);
if (sigismember(&s, SIGUSR1) != 0) e(77);
if (sigismember(&s, SIGSEGV) != 0) e(78);
if (sigismember(&s, SIGUSR2) != 0) e(79);
if (sigismember(&s, SIGPIPE) != 0) e(80);
if (sigismember(&s, SIGALRM) != 0) e(81);
if (sigismember(&s, SIGTERM) != 0) e(82);
if (sigismember(&s, SIGPWR) != 0) e(82);
}
void func1(sig)
int sig;
{
sig1++;
}
void func2(sig)
int sig;
{
sig2++;
}
int sigmemcmp(sigset_t *s1, sigset_t *s2, int size)
{
int i;
int mismatch = 0;
assert(size == sizeof(sigset_t));
for(i = 1; i < _NSIG; i++) {
if(sigismember(s1, i) && !sigismember(s2, i)) {
fprintf(stderr, "sig %d set in first but not in 2nd\n", i);
mismatch = 1;
}
if(!sigismember(s1, i) && sigismember(s2, i)) {
fprintf(stderr, "sig %d not set in first but is in 2nd\n", i);
mismatch = 1;
}
}
return mismatch;
}
void test37b()
{
/* Test sigprocmask and sigpending. */
int i;
pid_t p;
sigset_t s, s1, s_empty, s_full, s_ill, s_ill_pip, s_nokill, s_nokill_stop;
struct sigaction sa, osa;
subtest = 2;
clearsigstate();
/* Construct s_ill = {SIGILL} and s_ill_pip {SIGILL | SIGPIP}, etc. */
if (sigemptyset(&s_empty) != 0) e(1);
if (sigemptyset(&s_ill) != 0) e(2);
if (sigemptyset(&s_ill_pip) != 0) e(3);
if (sigaddset(&s_ill, SIGILL) != 0) e(4);
if (sigaddset(&s_ill_pip, SIGILL) != 0) e(5);
if (sigaddset(&s_ill_pip, SIGPIPE) != 0) e(6);
if (sigfillset(&s_full) != 0) e(7);
s_nokill = s_full;
if (sigdelset(&s_nokill, SIGKILL) != 0) e(8);
s_nokill_stop = s_nokill;
if (sigdelset(&s_nokill_stop, SIGSTOP) != 0) e(8);
if (SIGSTOP >= _NSIG) e(666);
if (SIGSTOP < _NSIG && sigdelset(&s_nokill, SIGSTOP) != 0) e(888);
/* Now get most of the signals into default state. Don't change SIGINT
* or SIGQUIT, so this program can be killed. SIGKILL is also special.
*/
sa.sa_handler = SIG_DFL;
sa.sa_mask = s_empty;
sa.sa_flags = 0;
for (i = 0; i < SIGS; i++) sigaction(i, &sa, &osa);
/* The second argument may be zero. See if it wipes out the system. */
for (i = 0; i < SIGS; i++) sigaction(i, (struct sigaction *) NULL, &osa);
/* Install a signal handler. */
sa.sa_handler = func1;
sa.sa_mask = s_ill;
sa.sa_flags = SA_NODEFER | SA_NOCLDSTOP;
osa.sa_handler = SIG_IGN;
osa.sa_mask = s_empty;
osa.sa_flags = 0;
if (sigaction(SIGHUP, &sa, &osa) != 0) e(9);
if (osa.sa_handler != SIG_DFL) e(10);
if (sigmemcmp(&osa.sa_mask, &s_empty, sizeof(s_empty))) e(11);
if (osa.sa_flags != 0) e(12);
/* Replace action and see if old value is read back correctly. */
sa.sa_handler = func2;
sa.sa_mask = s_ill_pip;
sa.sa_flags = SA_RESETHAND | SA_NODEFER;
osa.sa_handler = SIG_IGN;
osa.sa_mask = s_empty;
osa.sa_flags = 0;
if (sigaction(SIGHUP, &sa, &osa) != 0) e(13);
if (osa.sa_handler != func1) e(14);
if (sigmemcmp(&osa.sa_mask, &s_ill, sizeof(s_ill))) e(15);
if (osa.sa_flags != SA_NODEFER
&& osa.sa_flags != (SA_NODEFER | SA_NOCLDSTOP)) e(16);
/* Replace action once more and check what is read back. */
sa.sa_handler = SIG_DFL;
sa.sa_mask = s_empty;
osa.sa_handler = SIG_IGN;
osa.sa_mask = s_empty;
osa.sa_flags = 0;
if (sigaction(SIGHUP, &sa, &osa) != 0) e(17);
if (osa.sa_handler != func2) e(18);
if (sigmemcmp(&osa.sa_mask, &s_ill_pip, sizeof(s_ill_pip))) e(19);
if (osa.sa_flags != (SA_RESETHAND | SA_NODEFER)) e(20);
/* Test sigprocmask(SIG_SETMASK, ...). */
if (sigprocmask(SIG_SETMASK, &s_full, &s1) != 0) e(18); /* block all */
if (sigemptyset(&s1) != 0) e(19);
errno = 0;
if (sigprocmask(SIG_SETMASK, &s_empty, &s1) != 0) e(20); /* block none */
if (sigmemcmp(&s1, &s_nokill_stop, sizeof(s1))) e(21);
if (sigprocmask(SIG_SETMASK, &s_ill, &s1) != 0) e(22); /* block SIGILL */
errno = 0;
if (sigmemcmp(&s1, &s_empty, sizeof(s1))) e(23);
if (sigprocmask(SIG_SETMASK, &s_ill_pip, &s1) != 0) e(24); /* SIGILL+PIP */
if (sigmemcmp(&s1, &s_ill, sizeof(s1))) e(25);
if (sigprocmask(SIG_SETMASK, &s_full, &s1) != 0) e(26); /* block all */
if (sigmemcmp(&s1, &s_ill_pip, sizeof(s1))) e(27);
/* Test sigprocmask(SIG_UNBLOCK, ...) */
if (sigprocmask(SIG_UNBLOCK, &s_ill, &s1) != 0) e(28);
if (sigmemcmp(&s1, &s_nokill_stop, sizeof(s1))) e(29);
if (sigprocmask(SIG_UNBLOCK, &s_ill_pip, &s1) != 0) e(30);
s = s_nokill_stop;
if (sigdelset(&s, SIGILL) != 0) e(31);
if (sigmemcmp(&s, &s1, sizeof(s))) e(32);
if (sigprocmask(SIG_UNBLOCK, &s_empty, &s1) != 0) e(33);
s = s_nokill_stop;
if (sigdelset(&s, SIGILL) != 0) e(34);
if (sigdelset(&s, SIGPIPE) != 0) e(35);
if (sigmemcmp(&s, &s1, sizeof(s))) e(36);
s1 = s_nokill_stop;
if (sigprocmask(SIG_SETMASK, &s_empty, &s1) != 0) e(37);
if (sigmemcmp(&s, &s1, sizeof(s))) e(38);
/* Test sigprocmask(SIG_BLOCK, ...) */
if (sigprocmask(SIG_BLOCK, &s_ill, &s1) != 0) e(39);
if (sigmemcmp(&s1, &s_empty, sizeof(s1))) e(40);
if (sigprocmask(SIG_BLOCK, &s_ill_pip, &s1) != 0) e(41);
if (sigmemcmp(&s1, &s_ill, sizeof(s1))) e(42);
if (sigprocmask(SIG_SETMASK, &s_full, &s1) != 0) e(43);
if (sigmemcmp(&s1, &s_ill_pip, sizeof(s1))) e(44);
/* Check error condition. */
errno = 0;
if (sigprocmask(20000, &s_full, &s1) != -1) e(45);
if (errno != EINVAL) e(46);
if (sigprocmask(SIG_SETMASK, &s_full, &s1) != 0) e(47);
if (sigmemcmp(&s1, &s_nokill_stop, sizeof(s1))) e(48);
/* If second arg is 0, nothing is set. */
if (sigprocmask(SIG_SETMASK, (sigset_t *) NULL, &s1) != 0) e(49);
if (sigmemcmp(&s1, &s_nokill_stop, sizeof(s1))) e(50);
if (sigprocmask(SIG_SETMASK, &s_ill_pip, &s1) != 0) e(51);
if (sigmemcmp(&s1, &s_nokill_stop, sizeof(s1))) e(52);
if (sigprocmask(SIG_SETMASK, (sigset_t *) NULL, &s1) != 0) e(53);
if (sigmemcmp(&s1, &s_ill_pip, sizeof(s1))) e(54);
if (sigprocmask(SIG_BLOCK, (sigset_t *) NULL, &s1) != 0) e(55);
if (sigmemcmp(&s1, &s_ill_pip, sizeof(s1))) e(56);
if (sigprocmask(SIG_UNBLOCK, (sigset_t *) NULL, &s1) != 0) e(57);
if (sigmemcmp(&s1, &s_ill_pip, sizeof(s1))) e(58);
/* Trying to block SIGKILL is not allowed, but is not an error, either. */
s = s_empty;
if (sigaddset(&s, SIGKILL) != 0) e(59);
if (sigprocmask(SIG_BLOCK, &s, &s1) != 0) e(60);
if (sigmemcmp(&s1, &s_ill_pip, sizeof(s1))) e(61);
if (sigprocmask(SIG_SETMASK, &s_full, &s1) != 0) e(62);
if (sigmemcmp(&s1, &s_ill_pip, sizeof(s1))) e(63);
/* Test sigpending. At this moment, all signals are blocked. */
sa.sa_handler = func2;
sa.sa_mask = s_empty;
if (sigaction(SIGHUP, &sa, &osa) != 0) e(64);
p = getpid();
kill(p, SIGHUP); /* send SIGHUP to self */
if (sigpending(&s) != 0) e(65);
if (sigemptyset(&s1) != 0) e(66);
if (sigaddset(&s1, SIGHUP) != 0) e(67);
if (sigmemcmp(&s, &s1, sizeof(s))) e(68);
sa.sa_handler = SIG_IGN;
if (sigaction(SIGHUP, &sa, &osa) != 0) e(69);
if (sigpending(&s) != 0) e(70);
if (sigmemcmp(&s, &s_empty, sizeof(s))) e(71);
}
/*---------------------------------------------------------------------------*/
int x;
sigset_t glo_vol_set;
void catch1(signo)
int signo;
{
x = 42;
}
void catch2(signo)
int signo;
{
if (sigprocmask(SIG_BLOCK, (sigset_t *)NULL, (sigset_t *) &glo_vol_set) != 0)
e(1);
}
/* Verify that signal(2), which is now built on top of sigaction(2), still
* works.
*/
void test37c()
{
pid_t pid;
sigset_t sigset_var;
subtest = 3;
clearsigstate();
x = 0;
/* Verify an installed signal handler persists across a fork(2). */
if (signal(SIGTERM, catch1) == SIG_ERR) e(1);
switch (pid = fork()) {
case 0: /* child */
errct = 0;
while (x == 0);
if (x != 42) e(2);
exit(errct == 0 ? 0 : 1);
case -1: e(3); break;
default: /* parent */
sleep(1);
if (kill(pid, SIGTERM) != 0) e(4);
wait_for(pid);
break;
}
/* Verify that the return value is the previous handler. */
signal(SIGINT, SIG_IGN);
if (signal(SIGINT, catch2) != SIG_IGN) e(5);
if (signal(SIGINT, catch1) != catch2) e(6);
if (signal(SIGINT, SIG_DFL) != catch1) e(7);
if (signal(SIGINT, catch1) != SIG_DFL) e(8);
if (signal(SIGINT, SIG_DFL) != catch1) e(9);
if (signal(SIGINT, SIG_DFL) != SIG_DFL) e(10);
if (signal(SIGINT, catch1) != SIG_DFL) e(11);
/* Verify that SIG_ERR is correctly generated. */
if (signal(_NSIG, catch1) != SIG_ERR) e(12);
if (signal(0, catch1) != SIG_ERR) e(13);
if (signal(-1, SIG_DFL) != SIG_ERR) e(14);
/* Verify that caught signals are automatically reset to the default,
* and that further instances of the same signal are not blocked here
* or in the signal handler.
*/
if (signal(SIGTERM, catch1) == SIG_ERR) e(15);
switch ((pid = fork())) {
case 0: /* child */
errct = 0;
while (x == 0);
if (x != 42) e(16);
if (sigismember((sigset_t *) &glo_vol_set, SIGTERM)) e(17);
if (sigprocmask(SIG_BLOCK, (sigset_t *)NULL, &sigset_var) != 0) e(18);
if (sigismember(&sigset_var, SIGTERM)) e(19);
#if 0
/* Use this if you have compiled signal() to have the broken SYSV behaviour. */
if (signal(SIGTERM, catch1) != SIG_DFL) e(20);
#else
if (signal(SIGTERM, catch1) != catch1) e(20);
#endif
exit(errct == 0 ? 0 : 1);
default: /* parent */
sleep(1);
if (kill(pid, SIGTERM) != 0) e(21);
wait_for(pid);
break;
case -1: e(22); break;
}
}
/*---------------------------------------------------------------------------*/
/* Test that the signal handler can be invoked recursively with the
* state being properly saved and restored.
*/
static int y;
static int z;
void catch3(signo)
int signo;
{
if (z == 1) { /* catching a nested signal */
y = 2;
return;
}
z = 1;
if (kill(getpid(), SIGHUP) != 0) e(1);
while (y != 2);
y = 1;
}
void test37d()
{
struct sigaction act;
subtest = 4;
clearsigstate();
y = 0;
z = 0;
act.sa_handler = catch3;
sigemptyset(&act.sa_mask);
act.sa_flags = SA_NODEFER; /* Otherwise, nested occurence of
* SIGINT is blocked. */
if (sigaction(SIGHUP, &act, (struct sigaction *) NULL) != 0) e(2);
if (kill(getpid(), SIGHUP) != 0) e(3);
if (y != 1) e(4);
}
/*---------------------------------------------------------------------------*/
/* Test that the signal mask in effect for the duration of a signal handler
* is as specified in POSIX Section 3, lines 718 -724. Test that the
* previous signal mask is restored when the signal handler returns.
*/
void catch4(signo)
int signo;
{
sigset_t oset;
sigset_t set;
int i;
if (sigemptyset(&set) == -1) e(5001);
if (sigaddset(&set, SIGTERM) == -1) e(5002);
if (sigaddset(&set, SIGHUP) == -1) e(5003);
if (sigaddset(&set, SIGINT) == -1) e(5004);
if (sigaddset(&set, SIGPIPE) == -1) e(5005);
if (sigprocmask(SIG_BLOCK, (sigset_t *)NULL, &oset) != 0) e(5006);
if (sigmemcmp(&oset, &set, sizeof(set))) e(5007);
}
void test37e()
{
struct sigaction act, oact;
sigset_t set, oset;
subtest = 5;
clearsigstate();
act.sa_handler = catch4;
sigemptyset(&act.sa_mask);
sigaddset(&act.sa_mask, SIGTERM);
sigaddset(&act.sa_mask, SIGHUP);
act.sa_flags = 0;
if (sigaction(SIGINT, &act, &oact) == -1) e(2);
if (sigemptyset(&set) == -1) e(3);
if (sigaddset(&set, SIGPIPE) == -1) e(4);
if (sigprocmask(SIG_SETMASK, &set, &oset) == -1) e(5);
if (kill(getpid(), SIGINT) == -1) e(6);
if (sigprocmask(SIG_BLOCK, (sigset_t *)NULL, &oset) == -1) e(7);
if (sigemptyset(&set) == -1) e(8);
if (sigaddset(&set, SIGPIPE) == -1) e(9);
if (sigmemcmp(&set, &oset, sizeof(set))) e(10);
}
/*---------------------------------------------------------------------------*/
/* Test the basic functionality of sigsuspend(2). */
void catch5(signo)
int signo;
{
x = 1;
}
void test37f()
{
sigset_t set;
int r;
struct sigaction act;
pid_t pid;
subtest = 6;
clearsigstate();
switch (pid = fork()) {
case 0: /* child */
errct = 0;
sleep(1);
if (kill(getppid(), SIGINT) == -1) e(1);
exit(errct == 0 ? 0 : 1);
case -1: e(2); break;
default: /* parent */
if (sigemptyset(&act.sa_mask) == -1) e(3);
act.sa_flags = 0;
act.sa_handler = catch5;
if (sigaction(SIGINT, &act, (struct sigaction *) NULL) == -1) e(4);
if (sigemptyset(&set) == -1) e(5);
r = sigsuspend(&set);
if (r != -1 || errno != EINTR || x != 1) e(6);
wait_for(pid);
break;
}
}
/*----------------------------------------------------------------------*/
/* Test that sigsuspend() does block the signals specified in its
* argument, and after sigsuspend returns, the previous signal
* mask is restored.
*
* The child sends two signals to the parent SIGINT and then SIGPIPE,
* separated by a long delay. The parent executes sigsuspend() with
* SIGINT blocked. It is expected that the parent's SIGPIPE handler
* will be invoked, then sigsuspend will return restoring the
* original signal mask, and then the SIGPIPE handler will be
* invoked.
*/
void sigint_handler(signo)
int signo;
{
x = 1;
z++;
}
void sigpipe_handler(signo)
int signo;
{
x = 2;
z++;
}
void test37g()
{
sigset_t set;
int r;
struct sigaction act;
pid_t pid;
subtest = 7;
clearsigstate();
x = 0;
z = 0;
switch (pid = fork()) {
case 0: /* child */
errct = 0;
sleep(1);
if (kill(getppid(), SIGINT) == -1) e(1);
sleep(1);
if (kill(getppid(), SIGPIPE) == -1) e(2);
exit(errct == 0 ? 0 : 1);
case -1: e(3); break;
default: /* parent */
if (sigemptyset(&act.sa_mask) == -1) e(3);
act.sa_flags = 0;
act.sa_handler = sigint_handler;
if (sigaction(SIGINT, &act, (struct sigaction *) NULL) == -1) e(4);
act.sa_handler = sigpipe_handler;
if (sigaction(SIGPIPE, &act, (struct sigaction *) NULL) == -1) e(5);
if (sigemptyset(&set) == -1) e(6);
if (sigaddset(&set, SIGINT) == -1) e(7);
r = sigsuspend(&set);
if (r != -1) e(8);
if (errno != EINTR) e(9);
if (z != 2) e(10);
if (x != 1) e(11);
wait_for(pid);
break;
}
}
/*--------------------------------------------------------------------------*/
/* Test that sigsuspend() does block the signals specified in its
* argument, and after sigsuspend returns, the previous signal
* mask is restored.
*
* The child sends three signals to the parent: SIGHUP, then SIGPIPE,
* and then SIGTERM, separated by a long delay. The parent executes
* sigsuspend() with SIGHUP and SIGPIPE blocked. It is expected that
* the parent's SIGTERM handler will be invoked first, then sigsuspend()
* will return restoring the original signal mask, and then the other
* two handlers will be invoked.
*/
void sighup8(signo)
int signo;
{
x = 1;
z++;
}
void sigpip8(signo)
int signo;
{
x = 1;
z++;
}
void sigter8(signo)
int signo;
{
x = 2;
z++;
}
void test37h()
{
sigset_t set;
int r;
struct sigaction act;
pid_t pid;
subtest = 8;
clearsigstate();
x = 0;
z = 0;
switch (pid = fork()) {
case 0: /* child */
errct = 0;
sleep(1);
if (kill(getppid(), SIGHUP) == -1) e(1);
sleep(1);
if (kill(getppid(), SIGPIPE) == -1) e(2);
sleep(1);
if (kill(getppid(), SIGTERM) == -1) e(3);
exit(errct == 0 ? 0 : 1);
case -1: e(5); break;
default: /* parent */
if (sigemptyset(&act.sa_mask) == -1) e(6);
act.sa_flags = 0;
act.sa_handler = sighup8;
if (sigaction(SIGHUP, &act, (struct sigaction *) NULL) == -1) e(7);
act.sa_handler = sigpip8;
if (sigaction(SIGPIPE, &act, (struct sigaction *) NULL) == -1) e(8);
act.sa_handler = sigter8;
if (sigaction(SIGTERM, &act, (struct sigaction *) NULL) == -1) e(9);
if (sigemptyset(&set) == -1) e(10);
if (sigaddset(&set, SIGHUP) == -1) e(11);
if (sigaddset(&set, SIGPIPE) == -1) e(12);
r = sigsuspend(&set);
if (r != -1) e(13);
if (errno != EINTR) e(14);
if (z != 3) e(15);
if (x != 1) e(16);
wait_for(pid);
break;
}
}
/*--------------------------------------------------------------------------*/
/* Block SIGHUP and SIGTERM with sigprocmask(), send ourself SIGHUP
* and SIGTERM, unblock these signals with sigprocmask, and verify
* that these signals are delivered.
*/
void sighup9(signo)
int signo;
{
y++;
}
void sigter9(signo)
int signo;
{
z++;
}
void test37i()
{
sigset_t set;
struct sigaction act;
subtest = 9;
clearsigstate();
y = 0;
z = 0;
if (sigemptyset(&act.sa_mask) == -1) e(1);
act.sa_flags = 0;
act.sa_handler = sighup9;
if (sigaction(SIGHUP, &act, (struct sigaction *) NULL) == -1) e(2);
act.sa_handler = sigter9;
if (sigaction(SIGTERM, &act, (struct sigaction *) NULL) == -1) e(3);
if (sigemptyset(&set) == -1) e(4);
if (sigaddset(&set, SIGTERM) == -1) e(5);
if (sigaddset(&set, SIGHUP) == -1) e(6);
if (sigprocmask(SIG_SETMASK, &set, (sigset_t *)NULL) == -1) e(7);
if (kill(getpid(), SIGHUP) == -1) e(8);
if (kill(getpid(), SIGTERM) == -1) e(9);
if (y != 0) e(10);
if (z != 0) e(11);
if (sigemptyset(&set) == -1) e(12);
if (sigprocmask(SIG_SETMASK, &set, (sigset_t *)NULL) == -1) e(12);
if (y != 1) e(13);
if (z != 1) e(14);
}
/*---------------------------------------------------------------------------*/
/* Block SIGINT and then send this signal to ourself.
*
* Install signal handlers for SIGALRM and SIGINT.
*
* Set an alarm for 6 seconds, then sleep for 7.
*
* The SIGALRM should interrupt the sleep, but the SIGINT
* should remain pending.
*/
void sighup10(signo)
int signo;
{
y++;
}
void sigalrm_handler10(signo)
int signo;
{
z++;
}
void test37j()
{
sigset_t set, set2;
struct sigaction act;
subtest = 10;
clearsigstate();
y = 0;
z = 0;
if (sigemptyset(&act.sa_mask) == -1) e(1);
act.sa_flags = 0;
act.sa_handler = sighup10;
if (sigaction(SIGHUP, &act, (struct sigaction *) NULL) == -1) e(2);
act.sa_handler = sigalrm_handler10;
if (sigaction(SIGALRM, &act, (struct sigaction *) NULL) == -1) e(3);
if (sigemptyset(&set) == -1) e(4);
if (sigaddset(&set, SIGHUP) == -1) e(5);
if (sigprocmask(SIG_SETMASK, &set, (sigset_t *)NULL) == -1) e(6);
if (kill(getpid(), SIGHUP) == -1) e(7);
if (sigpending(&set) == -1) e(8);
if (sigemptyset(&set2) == -1) e(9);
if (sigaddset(&set2, SIGHUP) == -1) e(10);
if (sigmemcmp(&set2, &set, sizeof(set))) e(11);
alarm(6);
sleep(7);
if (sigpending(&set) == -1) e(12);
if (sigmemcmp(&set, &set2, sizeof(set))) e(13);
if (y != 0) e(14);
if (z != 1) e(15);
}
/*--------------------------------------------------------------------------*/
void test37k()
{
subtest = 11;
}
void test37l()
{
subtest = 12;
}
/*---------------------------------------------------------------------------*/
/* Basic test for setjmp/longjmp. This includes testing that the
* signal mask is properly restored.
*/
#define TEST_SETJMP(_name, _subtest, _type, _setjmp, _longjmp, _save) \
void _name(void) \
{ \
_type jb; \
sigset_t ss, ss2, ss_orig; \
\
subtest = _subtest; \
clearsigstate(); \
\
sigemptyset(&ss); sigemptyset(&ss2); \
sigaddset(&ss, 2); sigaddset(&ss, 4); sigaddset(&ss, 5); \
sigaddset(&ss2, 20); sigaddset(&ss2, 22); sigaddset(&ss2, 65); \
memcpy(&ss_orig, &ss, sizeof(ss)); \
if (sigprocmask(SIG_SETMASK, &ss, (sigset_t *)NULL) == -1) e(1); \
if (_setjmp) { \
sigset_t ssexp; \
if (sigprocmask(SIG_BLOCK, (sigset_t *)NULL, &ss) == -1) e(2); \
ssexp = _save ? ss_orig : ss2; \
sigdelset(&ssexp, SIGKILL); \
if (sigmemcmp(&ss, &ssexp, sizeof(ss))) e(388); \
return; \
} \
ss = ss2; \
if (sigprocmask(SIG_SETMASK, &ss, (sigset_t *)NULL) == -1) e(4); \
_longjmp; \
}
TEST_SETJMP(test37m, 13, jmp_buf, setjmp(jb), longjmp(jb, 1), 1)
TEST_SETJMP(test37p, 16, sigjmp_buf, sigsetjmp(jb, 0), siglongjmp(jb, 1), 0)
TEST_SETJMP(test37q, 17, sigjmp_buf, sigsetjmp(jb, 1), siglongjmp(jb, 1), 1)
void longjerr()
{
e(5);
}
/*--------------------------------------------------------------------------*/
/* Test for setjmp/longjmp.
*
* Catch a signal. While in signal handler do setjmp/longjmp.
*/
void catch14(signo, code, scp)
int signo;
int code;
struct sigcontext *scp;
{
jmp_buf jb;
if (setjmp(jb)) {
x++;
sigreturn(scp);
e(1);
}
y++;
longjmp(jb, 1);
e(2);
}
void test37n()
{
struct sigaction act;
typedef void(*sighandler_t) (int sig);
subtest = 14;
clearsigstate();
x = 0;
y = 0;
act.sa_flags = 0;
sigemptyset(&act.sa_mask);
act.sa_handler = (sighandler_t) catch14; /* fudge */
if (sigaction(SIGSEGV, &act, (struct sigaction *) NULL) == -1) e(3);
if (kill(getpid(), SIGSEGV) == -1) e(4);
if (x != 1) e(5);
if (y != 1) e(6);
}
/*---------------------------------------------------------------------------*/
/* Test for setjmp/longjmp.
*
* Catch a signal. Longjmp out of signal handler.
*/
jmp_buf glo_jb;
void catch15(signo)
int signo;
{
z++;
longjmp(glo_jb, 7);
e(1);
}
void test37o()
{
struct sigaction act;
int k;
subtest = 15;
clearsigstate();
z = 0;
act.sa_flags = 0;
sigemptyset(&act.sa_mask);
act.sa_handler = catch15;
if (sigaction(SIGALRM, &act, (struct sigaction *) NULL) == -1) e(2);
if ((k = setjmp(glo_jb))) {
if (z != 1) e(399);
if (k != 7) e(4);
return;
}
if (kill(getpid(), SIGALRM) == -1) e(5);
}
void clearsigstate()
{
int i;
sigset_t sigset_var;
/* Clear the signal state. */
for (i = 1; i < _NSIG; i++) signal(i, SIG_IGN);
for (i = 1; i < _NSIG; i++) signal(i, SIG_DFL);
sigfillset(&sigset_var);
sigprocmask(SIG_UNBLOCK, &sigset_var, (sigset_t *)NULL);
}
void wait_for(pid)
pid_t pid;
{
/* Expect exactly one child, and that it exits with 0. */
int r;
int status;
errno = 0;
while (1) {
errno = 0;
r = wait(&status);
if (r == pid) {
errno = 0;
if (status != 0) e(90);
return;
}
if (r < 0) {
e(91);
return;
}
e(92);
}
}