Josh Williams
78 lines
1.6 KiB
C
78 lines
1.6 KiB
C
#include <signal.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include "signals_list.h"
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#include "../test_helpers.h"
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int handler_called = 0;
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void sig_handler(int signo)
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{
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(void) signo;
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handler_called = 1;
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}
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int sigprocmask_block(int signum)
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{
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int defaultsig = SIGALRM;
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if (signum == SIGALRM) {
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defaultsig = SIGHUP;
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}
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struct sigaction act;
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sigset_t blocked_set1, blocked_set2, pending_set;
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sigemptyset(&blocked_set1);
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sigemptyset(&blocked_set2);
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sigaddset(&blocked_set1, signum);
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sigaddset(&blocked_set2, defaultsig);
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act.sa_handler = sig_handler;
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act.sa_flags = 0;
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sigemptyset(&act.sa_mask);
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int status;
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status = sigaction(signum, &act, 0);
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ERROR_IF(sigaction, status, == -1);
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status = sigaction(defaultsig, &act, 0);
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ERROR_IF(sigaction, status, == -1);
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status = sigprocmask(SIG_SETMASK, &blocked_set1, NULL);
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ERROR_IF(sigprocmask, status, == -1);
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status = sigprocmask(SIG_BLOCK, &blocked_set2, NULL);
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ERROR_IF(sigprocmask, status, == -1);
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ERROR_IF(raise, signum, == -1);
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ERROR_IF(raise, defaultsig, == -1);
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if (handler_called) {
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printf("FAIL: Signal was not blocked\n");
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exit(EXIT_FAILURE);
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}
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status = sigpending(&pending_set);
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ERROR_IF(sigpending, status, == -1);
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status = sigismember(&pending_set, signum);
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ERROR_IF(sigismember, status, != 1);
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status = sigismember(&pending_set, defaultsig);
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ERROR_IF(sigismember, status, != 1);
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act.sa_handler = SIG_IGN;
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sigaction(signum, &act, 0);
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sigaction(defaultsig, &act, 0);
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return EXIT_SUCCESS;
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}
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int main(){
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for (int i=1; i<N_SIGNALS; i++){
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if (i == SIGKILL || i == SIGSTOP){
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continue;
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}
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sigprocmask_block(i);
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}
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return EXIT_SUCCESS;
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}
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