C++ (Cpp) sc_sigmask Examples

Example #1

File: signal_kern.c Project: 12019/hg556a_source

int sys_sigreturn(struct pt_regs regs)
{
	void *sc = sp_to_sc(PT_REGS_SP(&current->thread.regs));
	void *mask = sp_to_mask(PT_REGS_SP(&current->thread.regs));
	int sig_size = (_NSIG_WORDS - 1) * sizeof(unsigned long);

	spin_lock_irq(&current->sighand->siglock);
	copy_from_user(&current->blocked.sig[0], sc_sigmask(sc), 
		       sizeof(current->blocked.sig[0]));
	copy_from_user(&current->blocked.sig[1], mask, sig_size);
	sigdelsetmask(&current->blocked, ~_BLOCKABLE);
	recalc_sigpending();
	spin_unlock_irq(&current->sighand->siglock);
	copy_sc_from_user(&current->thread.regs, sc, 
			  &signal_frame_sc.common.arch);
	return(PT_REGS_SYSCALL_RET(&current->thread.regs));
}

Example #2

File: frame_kern.c Project: GodFox/magx_kernel_xpixl

int setup_signal_stack_sc(unsigned long stack_top, int sig, 
			  struct k_sigaction *ka, struct pt_regs *regs,
			  sigset_t *mask)
{
	struct frame_common *frame = &signal_frame_sc_sr.common;
	void *restorer;
	void *user_sc;
	int sig_size = (_NSIG_WORDS - 1) * sizeof(unsigned long);
	unsigned long sigs, sr;
	unsigned long start = stack_top - frame->len - sig_size;

	restorer = NULL;
	if(ka->sa.sa_flags & SA_RESTORER)
		restorer = ka->sa.sa_restorer;

	user_sc = (void *) (start + signal_frame_sc_sr.sc_index);
	if(restorer == NULL){
		frame = &signal_frame_sc.common;
		user_sc = (void *) (start + signal_frame_sc.sc_index);
		sr = (unsigned long) frame->data;
		sr += frame->sr_index;
		sr = *((unsigned long *) sr);
		restorer = ((void (*)(void)) sr);
	}

	sigs = start + frame->len;
	if(copy_to_user((void *) start, frame->data, frame->len) ||
	   copy_to_user((void *) (start + frame->sig_index), &sig, 
			sizeof(sig)) ||
	   copy_sc_to_user(user_sc, NULL, regs, 
			   &signal_frame_sc.common.arch) ||
	   copy_to_user(sc_sigmask(user_sc), mask, sizeof(mask->sig[0])) ||
	   copy_to_user((void *) sigs, &mask->sig[1], sig_size) ||
	   copy_restorer(restorer, start, frame->sr_index, frame->sr_relative))
		return(1);

	PT_REGS_IP(regs) = (unsigned long) ka->sa.sa_handler;
	PT_REGS_SP(regs) = start + frame->sp_index;

	return(0);
}