text: /* -*- Mode: C; tab-width: 8; c-basic-offset: 2; indent-tabs-mode: nil; -*- */
  
  #include "rrutil.h"
  
  static int pipe_fds[2];
  
  int main(int argc, char* argv[]) {
    char buf;
    pid_t pid;
    int status;
    sigset_t mask;
  
    test_assert(0 == pipe(pipe_fds));
  
    sigemptyset(&mask);
    sigfillset(&mask);
    test_assert(0 == sigprocmask(SIG_BLOCK, &mask, NULL));
  
    /* Check that even when all signals are supposedly blocked,
       syscallbuf still works */
    pid = fork();
    if (!pid) {
      test_assert(1 == write(pipe_fds[1], "y", 1));
      return 77;
    }
    test_assert(1 == read(pipe_fds[0], &buf, 1));
    test_assert(pid == wait(&status));
    test_assert(WIFEXITED(status) && WEXITSTATUS(status) == 77);
  
    atomic_puts("EXIT-SUCCESS");
  
    return 0;
  }
  