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#include <signal.h>
#include <stdio.h>
#include <sys/syscall.h>
#include <unistd.h>
// Reg test for bug #93328: we were using too-big sigset types, and thus
// trashing memory when we wrote out the 'oldset' param from sigprocmask().
int main(void)
{
#if defined(__NR_sigprocmask) \
&& !defined(__powerpc64__) \
&& !defined(__s390x__) \
&& !defined(__arm__)
// arm-linux uses rt_sigprocmask, so no sigset mangling takes place
int x[6], *s, *os, i;
x[0] = 0x11111111;
x[1] = 0x89abcdef;
x[2] = 0x22222222;
x[3] = 0x33333333;
x[4] = 0x0;
x[5] = 0x44444444;
s = &x[1];
os = &x[4];
// Make sure the system is in a known state with no signals
// blocked as perl has been known to leave some signals blocked
// when starting child processes which can cause failures in
// this test unless we reset things here.
syscall(__NR_sigprocmask, SIG_SETMASK, os, NULL);
fprintf(stderr, "before\n");
for (i = 0; i < 6; i++) {
fprintf(stderr, "%x ", x[i]);
}
fprintf(stderr, "\n");
syscall(__NR_sigprocmask, SIG_BLOCK, s, os);
fprintf(stderr, "after1\n");
for (i = 0; i < 6; i++) {
fprintf(stderr, "%x ", x[i]);
}
fprintf(stderr, "\n");
syscall(__NR_sigprocmask, SIG_BLOCK, s, os);
fprintf(stderr, "after2\n");
for (i = 0; i < 6; i++) {
fprintf(stderr, "%x ", x[i]);
}
fprintf(stderr, "\n");
#else
fprintf(stderr, "__NR_sigprocmask not supported on this platform\n");
#endif
return(0);
}
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