1
2#include <errno.h>
3#include <stdio.h>
4#include <signal.h>
5#include <stdlib.h>
6
7static void
8abend (int sig)
9{
10  printf ("Abended on signal %d\n", sig);
11  exit (2);
12}
13
14int
15main (void)
16{
17  struct sigaction  sa;
18
19  int i;
20  int rc;
21  for (i = 1; i <= 65; i++) {
22     // Skip signals 32 and 33, since these are used by LinuxThreads. Some
23     // glibc versions do not invoke the sigaction system call for these
24     // signals.
25     // skip signals 63 and 64: some systems say "warning, ignored attempt
26     // to catch 32 because it's used internally by Valgrind", others say
27     // "invalid argument".
28     if (i == 32 || i == 33 || i == 63 || i == 64) {
29        continue;
30     }                  // different systems
31     sa.sa_flags   = 0;
32     sigemptyset( &sa.sa_mask );
33     sa.sa_handler = abend;
34     fprintf(stderr,"setting signal %d: ", i);
35     rc = sigaction (i /*SIGKILL*/, &sa, NULL);
36     if (rc) perror ("");
37     else fprintf(stderr,"Success\n");
38     fprintf(stderr,"getting signal %d: ", i);
39     rc = sigaction (i /*SIGKILL*/, NULL, &sa);
40     if (rc) perror ("");
41     else fprintf(stderr,"Success\n");
42     fprintf(stderr,"\n");
43  }
44  return 0;
45}
46