lib/ansi/sigmisc.c

   1 /*
   2  * sigmisc.c - used to get a signal mask
   3  */
   4 /* $Header$ */
   5
   6 #if     defined(_POSIX_SOURCE)
   7
   8 /* This can't be done in setjmp.e, since SIG_SETMASK is defined in
   9  * <signal.h>. This is a C-file, which can't be included.
  10  */
  11
  12 #include        <sys/types.h>
  13 #include        <signal.h>
  14 #include        <stddef.h>
  15
  16 int _sigprocmask(int, sigset_t *, sigset_t *);
  17
  18 static void
  19 __testsigset(void) {
  20         /* This switch compiles when a sigset_t has the right size. */
  21         switch(0) {
  22         case 0:
  23         case sizeof(sigset_t) <= sizeof(long): break;
  24         }
  25 }
  26
  27 void
  28 __newsigset(sigset_t *p)
  29 {
  30         /* The SIG_SETMASK is not significant */
  31         _sigprocmask(SIG_SETMASK, NULL, p);
  32 }
  33
  34 void
  35 __oldsigset(sigset_t *p)
  36 {
  37         _sigprocmask(SIG_SETMASK, p, NULL);
  38 }
  39 #endif  /* _POSIX_SOURCE */