static void do_signal()

in kernel/signal.c [343:374]

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

static void do_signal(struct pt_regs *regs)
{
	struct ksignal ksig;

	if (get_signal(&ksig)) {
		handle_signal(&ksig, regs);
		return;
	}

	/*
	 * If we were from a system call, check for system call restarting...
	 */
	if (in_syscall(regs)) {
		/* Restart the system call - no handlers present */

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

		switch (regs->uregs[0]) {
		case -ERESTART_RESTARTBLOCK:
			regs->uregs[15] = __NR_restart_syscall;
			fallthrough;
		case -ERESTARTNOHAND:
		case -ERESTARTSYS:
		case -ERESTARTNOINTR:
			regs->uregs[0] = regs->orig_r0;
			regs->ipc -= 0x4;
			break;
		}
	}
	restore_saved_sigmask();
}