static void handle_signal()

in kernel/signal.c [300:332]

• 26 lines of code
• 7 McCabe index (conditional complexity)

static void handle_signal(struct ksignal *ksig, struct pt_regs *regs)
{
	int ret;
	sigset_t *oldset = sigmask_to_save();

	if (in_syscall(regs)) {
		/* Avoid additional syscall restarting via ret_slow_syscall. */
		forget_syscall(regs);

		switch (regs->uregs[0]) {
		case -ERESTART_RESTARTBLOCK:
		case -ERESTARTNOHAND:
			regs->uregs[0] = -EINTR;
			break;
		case -ERESTARTSYS:
			if (!(ksig->ka.sa.sa_flags & SA_RESTART)) {
				regs->uregs[0] = -EINTR;
				break;
			}
			fallthrough;
		case -ERESTARTNOINTR:
			regs->uregs[0] = regs->orig_r0;
			regs->ipc -= 4;
			break;
		}
	}
	/*
	 * Set up the stack frame
	 */
	ret = setup_rt_frame(ksig, oldset, regs);

	signal_setup_done(ret, ksig, 0);
}