fusl/src/signal/block.c

#include "pthread_impl.h"
#include "syscall.h"
#include <signal.h>

static const unsigned long all_mask[] = {
#if ULONG_MAX == 0xffffffff && _NSIG == 129
    -1UL, -1UL, -1UL, -1UL
#elif ULONG_MAX == 0xffffffff
    -1UL, -1UL
#else
    -1UL
#endif
};

static const unsigned long app_mask[] = {
#if ULONG_MAX == 0xffffffff
#if _NSIG == 65
    0x7fffffff, 0xfffffffc
#else
    0x7fffffff, 0xfffffffc, -1UL, -1UL
#endif
#else
#if _NSIG == 65
    0xfffffffc7fffffff
#else
    0xfffffffc7fffffff, -1UL
#endif
#endif
};

void __block_all_sigs(void* set) {
  __syscall(SYS_rt_sigprocmask, SIG_BLOCK, &all_mask, set, _NSIG / 8);
}

void __block_app_sigs(void* set) {
  __syscall(SYS_rt_sigprocmask, SIG_BLOCK, &app_mask, set, _NSIG / 8);
}

void __restore_sigs(void* set) {
  __syscall(SYS_rt_sigprocmask, SIG_SETMASK, set, 0, _NSIG / 8);
}