C++ (Cpp) native_to_linux_sigaltstack Examples

Example #1

File: linux_machdep.c Project: goroutines/rumprun

static void
linux_save_ucontext(struct lwp *l, struct trapframe *tf, const sigset_t *mask, struct sigaltstack *sas, struct linux_ucontext *uc)
{
	uc->uc_flags = 0;
	uc->uc_link = NULL;
	native_to_linux_sigaltstack(&uc->uc_stack, sas);
	linux_save_sigcontext(l, tf, mask, &uc->uc_mcontext);
	native_to_linux_sigset(&uc->uc_sigmask, mask);
	(void)memset(&uc->uc_fpregs_mem, 0, sizeof(uc->uc_fpregs_mem));
}

Example #2

File: linux_signal.c Project: ryo/netbsd-src

int
linux_sys_sigaltstack(struct lwp *l, const struct linux_sys_sigaltstack_args *uap, register_t *retval)
{
	/* {
		syscallarg(const struct linux_sigaltstack *) ss;
		syscallarg(struct linux_sigaltstack *) oss;
	} */
	struct linux_sigaltstack ss;
	struct sigaltstack nss;
	struct proc *p = l->l_proc;
	int error = 0;

	if (SCARG(uap, oss)) {
		native_to_linux_sigaltstack(&ss, &l->l_sigstk);
		if ((error = copyout(&ss, SCARG(uap, oss), sizeof(ss))) != 0)
			return error;
	}

	if (SCARG(uap, ss) != NULL) {
		if ((error = copyin(SCARG(uap, ss), &ss, sizeof(ss))) != 0)
			return error;
		linux_to_native_sigaltstack(&nss, &ss);

		mutex_enter(p->p_lock);

		if (nss.ss_flags & ~SS_ALLBITS)
			error = EINVAL;
		else if (nss.ss_flags & SS_DISABLE) {
			if (l->l_sigstk.ss_flags & SS_ONSTACK)
				error = EINVAL;
		} else if (nss.ss_size < LINUX_MINSIGSTKSZ)
			error = ENOMEM;

		if (error == 0)
			l->l_sigstk = nss;

		mutex_exit(p->p_lock);
	}

	return error;
}