1 
2 #include <errno.h>
3 #include <stdio.h>
4 #include <signal.h>
5 #include <stdlib.h>
6 
7 static void
8 abend (int sig)
9 {
10   printf ("Abended on signal %d\n", sig);
11   exit (2);
12 }
13 
14 int
15 main (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