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-rw-r--r--kernel/power/user.c18
1 files changed, 14 insertions, 4 deletions
diff --git a/kernel/power/user.c b/kernel/power/user.c
index 5bd321bcbb75..88aac26e598a 100644
--- a/kernel/power/user.c
+++ b/kernel/power/user.c
@@ -133,7 +133,7 @@ static int snapshot_ioctl(struct inode *inode, struct file *filp,
{
int error = 0;
struct snapshot_data *data;
- loff_t avail;
+ loff_t size;
sector_t offset;
if (_IOC_TYPE(cmd) != SNAPSHOT_IOC_MAGIC)
@@ -210,10 +210,20 @@ static int snapshot_ioctl(struct inode *inode, struct file *filp,
image_size = arg;
break;
+ case SNAPSHOT_GET_IMAGE_SIZE:
+ if (!data->ready) {
+ error = -ENODATA;
+ break;
+ }
+ size = snapshot_get_image_size();
+ size <<= PAGE_SHIFT;
+ error = put_user(size, (loff_t __user *)arg);
+ break;
+
case SNAPSHOT_AVAIL_SWAP:
- avail = count_swap_pages(data->swap, 1);
- avail <<= PAGE_SHIFT;
- error = put_user(avail, (loff_t __user *)arg);
+ size = count_swap_pages(data->swap, 1);
+ size <<= PAGE_SHIFT;
+ error = put_user(size, (loff_t __user *)arg);
break;
case SNAPSHOT_GET_SWAP_PAGE: