pthread_sigmask.c raw

   1  #include <signal.h>
   2  #include <errno.h>
   3  #include "syscall.h"
   4  
   5  int pthread_sigmask(int how, const sigset_t *restrict set, sigset_t *restrict old)
   6  {
   7  	int ret;
   8  	if (set && (unsigned)how - SIG_BLOCK > 2U) return EINVAL;
   9  	ret = -__syscall(SYS_rt_sigprocmask, how, set, old, _NSIG/8);
  10  	if (!ret && old) {
  11  		if (sizeof old->__bits[0] == 8) {
  12  			old->__bits[0] &= ~0x380000000ULL;
  13  		} else {
  14  			old->__bits[0] &= ~0x80000000UL;
  15  			old->__bits[1] &= ~0x3UL;
  16  		}
  17  	}
  18  	return ret;
  19  }
  20