C++ (Cpp) xen_preemptible_hcall_begin Exemples

Exemple #1

Fichier : privcmd.c Projet : gabrielDetryy/linux

static long privcmd_ioctl_hypercall(void __user *udata)
{
	struct privcmd_hypercall hypercall;
	long ret;

	if (copy_from_user(&hypercall, udata, sizeof(hypercall)))
		return -EFAULT;

	xen_preemptible_hcall_begin();
	ret = privcmd_call(hypercall.op,
			   hypercall.arg[0], hypercall.arg[1],
			   hypercall.arg[2], hypercall.arg[3],
			   hypercall.arg[4]);
	xen_preemptible_hcall_end();

	return ret;
}

Exemple #2

Fichier : privcmd.c Projet : asmalldev/linux

static long privcmd_ioctl_hypercall(struct file *file, void __user *udata)
{
	struct privcmd_data *data = file->private_data;
	struct privcmd_hypercall hypercall;
	long ret;

	/* Disallow arbitrary hypercalls if restricted */
	if (data->domid != DOMID_INVALID)
		return -EPERM;

	if (copy_from_user(&hypercall, udata, sizeof(hypercall)))
		return -EFAULT;

	xen_preemptible_hcall_begin();
	ret = privcmd_call(hypercall.op,
			   hypercall.arg[0], hypercall.arg[1],
			   hypercall.arg[2], hypercall.arg[3],
			   hypercall.arg[4]);
	xen_preemptible_hcall_end();

	return ret;
}