src/signal/block.c

   1 #include "pthread_impl.h"
   2 #include "syscall.h"
   3 #include <signal.h>
   4
   5 static const unsigned long all_mask[] = {
   6 #if ULONG_MAX == 0xffffffff && _NSIG == 129
   7         -1UL, -1UL, -1UL, -1UL
   8 #elif ULONG_MAX == 0xffffffff
   9         -1UL, -1UL
  10 #else
  11         -1UL
  12 #endif
  13 };
  14
  15 static const unsigned long app_mask[] = {
  16 #if ULONG_MAX == 0xffffffff
  17 #if _NSIG == 65
  18         0x7fffffff, 0xfffffffc
  19 #else
  20         0x7fffffff, 0xfffffffc, -1UL, -1UL
  21 #endif
  22 #else
  23 #if _NSIG == 65
  24         0xfffffffc7fffffff
  25 #else
  26         0xfffffffc7fffffff, -1UL
  27 #endif
  28 #endif
  29 };
  30
  31 void __block_all_sigs(void *set)
  32 {
  33         __syscall(SYS_rt_sigprocmask, SIG_BLOCK, &all_mask, set, _NSIG/8);
  34 }
  35
  36 void __block_app_sigs(void *set)
  37 {
  38         __syscall(SYS_rt_sigprocmask, SIG_BLOCK, &app_mask, set, _NSIG/8);
  39 }
  40
  41 void __restore_sigs(void *set)
  42 {
  43         __syscall(SYS_rt_sigprocmask, SIG_SETMASK, set, 0, _NSIG/8);
  44 }