static int
xencomm_privcmd_xen_version(privcmd_hypercall_t *hypercall)
{
int cmd = hypercall->arg[0];
void __user *arg = (void __user *)hypercall->arg[1];
struct xencomm_handle *desc;
size_t argsize;
int rc;
switch (cmd) {
case XENVER_version:
/* do not actually pass an argument */
return xencomm_arch_hypercall_xen_version(cmd, 0);
case XENVER_extraversion:
argsize = sizeof(xen_extraversion_t);
break;
case XENVER_compile_info:
argsize = sizeof(xen_compile_info_t);
break;
case XENVER_capabilities:
argsize = sizeof(xen_capabilities_info_t);
break;
case XENVER_changeset:
argsize = sizeof(xen_changeset_info_t);
break;
case XENVER_platform_parameters:
argsize = sizeof(xen_platform_parameters_t);
break;
case XENVER_pagesize:
argsize = (arg == NULL) ? 0 : sizeof(void *);
break;
case XENVER_get_features:
argsize = (arg == NULL) ? 0 : sizeof(xen_feature_info_t);
break;
default:
printk("%s: unknown version op %d\n", __func__, cmd);
return -ENOSYS;
}
rc = xencomm_create(arg, argsize, &desc, GFP_KERNEL);
if (rc)
return rc;
rc = xencomm_arch_hypercall_xen_version(cmd, desc);
xencomm_free(desc);
return rc;
}
int
xencomm_hypercall_xen_version(int cmd, void *arg)
{
struct xencomm_handle *desc;
unsigned int argsize;
switch (cmd) {
case XENVER_version:
/* do not actually pass an argument */
return xencomm_arch_hypercall_xen_version(cmd, 0);
case XENVER_extraversion:
argsize = sizeof(struct xen_extraversion);
break;
case XENVER_compile_info:
argsize = sizeof(struct xen_compile_info);
break;
case XENVER_capabilities:
argsize = sizeof(struct xen_capabilities_info);
break;
case XENVER_changeset:
argsize = sizeof(struct xen_changeset_info);
break;
case XENVER_platform_parameters:
argsize = sizeof(struct xen_platform_parameters);
break;
case XENVER_get_features:
argsize = (arg == NULL) ? 0 : sizeof(struct xen_feature_info);
break;
default:
printk(KERN_DEBUG
"%s: unknown version op %d\n", __func__, cmd);
return -ENOSYS;
}
desc = xencomm_map_no_alloc(arg, argsize);
if (desc == NULL)
return -EINVAL;
return xencomm_arch_hypercall_xen_version(cmd, desc);
}
