static int vmci_host_do_ctx_set_cpt_state(struct vmci_host_dev *vmci_host_dev,
const char *ioctl_name,
void __user *uptr)
{
struct vmci_ctx_chkpt_buf_info set_info;
u32 cid;
void *cpt_buf;
int retval;
if (vmci_host_dev->ct_type != VMCIOBJ_CONTEXT) {
vmci_ioctl_err("only valid for contexts\n");
return -EINVAL;
}
if (copy_from_user(&set_info, uptr, sizeof(set_info)))
return -EFAULT;
cpt_buf = memdup_user((void __user *)(uintptr_t)set_info.cpt_buf,
set_info.buf_size);
if (IS_ERR(cpt_buf))
return PTR_ERR(cpt_buf);
cid = vmci_ctx_get_id(vmci_host_dev->context);
set_info.result = vmci_ctx_set_chkpt_state(cid, set_info.cpt_type,
set_info.buf_size, cpt_buf);
retval = copy_to_user(uptr, &set_info, sizeof(set_info)) ? -EFAULT : 0;
kfree(cpt_buf);
return retval;
}
static int vmci_host_do_ctx_set_cpt_state(struct vmci_host_dev *vmci_host_dev,
const char *ioctl_name,
void __user *uptr)
{
struct vmci_ctx_chkpt_buf_info set_info;
u32 cid;
void *cpt_buf;
int retval;
if (vmci_host_dev->ct_type != VMCIOBJ_CONTEXT) {
vmci_ioctl_err("only valid for contexts\n");
return -EINVAL;
}
if (copy_from_user(&set_info, uptr, sizeof(set_info)))
return -EFAULT;
cpt_buf = kmalloc(set_info.buf_size, GFP_KERNEL);
if (!cpt_buf) {
vmci_ioctl_err(
"cannot allocate memory to set cpt state (type=%d)\n",
set_info.cpt_type);
return -ENOMEM;
}
if (copy_from_user(cpt_buf, (void __user *)(uintptr_t)set_info.cpt_buf,
set_info.buf_size)) {
retval = -EFAULT;
goto out;
}
cid = vmci_ctx_get_id(vmci_host_dev->context);
set_info.result = vmci_ctx_set_chkpt_state(cid, set_info.cpt_type,
set_info.buf_size, cpt_buf);
retval = copy_to_user(uptr, &set_info, sizeof(set_info)) ? -EFAULT : 0;
out:
kfree(cpt_buf);
return retval;
}
