summaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
-rw-r--r--fs/ioctl.c10
-rw-r--r--include/linux/fs.h4
2 files changed, 7 insertions, 7 deletions
diff --git a/fs/ioctl.c b/fs/ioctl.c
index d6cc16476620..a59635e295fa 100644
--- a/fs/ioctl.c
+++ b/fs/ioctl.c
@@ -86,7 +86,7 @@ int fiemap_fill_next_extent(struct fiemap_extent_info *fieinfo, u64 logical,
u64 phys, u64 len, u32 flags)
{
struct fiemap_extent extent;
- struct fiemap_extent *dest = fieinfo->fi_extents_start;
+ struct fiemap_extent __user *dest = fieinfo->fi_extents_start;
/* only count the extents */
if (fieinfo->fi_extents_max == 0) {
@@ -173,6 +173,7 @@ static int fiemap_check_ranges(struct super_block *sb,
static int ioctl_fiemap(struct file *filp, unsigned long arg)
{
struct fiemap fiemap;
+ struct fiemap __user *ufiemap = (struct fiemap __user *) arg;
struct fiemap_extent_info fieinfo = { 0, };
struct inode *inode = filp->f_path.dentry->d_inode;
struct super_block *sb = inode->i_sb;
@@ -182,8 +183,7 @@ static int ioctl_fiemap(struct file *filp, unsigned long arg)
if (!inode->i_op->fiemap)
return -EOPNOTSUPP;
- if (copy_from_user(&fiemap, (struct fiemap __user *)arg,
- sizeof(struct fiemap)))
+ if (copy_from_user(&fiemap, ufiemap, sizeof(fiemap)))
return -EFAULT;
if (fiemap.fm_extent_count > FIEMAP_MAX_EXTENTS)
@@ -196,7 +196,7 @@ static int ioctl_fiemap(struct file *filp, unsigned long arg)
fieinfo.fi_flags = fiemap.fm_flags;
fieinfo.fi_extents_max = fiemap.fm_extent_count;
- fieinfo.fi_extents_start = (struct fiemap_extent *)(arg + sizeof(fiemap));
+ fieinfo.fi_extents_start = ufiemap->fm_extents;
if (fiemap.fm_extent_count != 0 &&
!access_ok(VERIFY_WRITE, fieinfo.fi_extents_start,
@@ -209,7 +209,7 @@ static int ioctl_fiemap(struct file *filp, unsigned long arg)
error = inode->i_op->fiemap(inode, &fieinfo, fiemap.fm_start, len);
fiemap.fm_flags = fieinfo.fi_flags;
fiemap.fm_mapped_extents = fieinfo.fi_extents_mapped;
- if (copy_to_user((char *)arg, &fiemap, sizeof(fiemap)))
+ if (copy_to_user(ufiemap, &fiemap, sizeof(fiemap)))
error = -EFAULT;
return error;
diff --git a/include/linux/fs.h b/include/linux/fs.h
index 09b5bd6a7c6b..32b38cd829d3 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -1483,8 +1483,8 @@ struct fiemap_extent_info {
unsigned int fi_flags; /* Flags as passed from user */
unsigned int fi_extents_mapped; /* Number of mapped extents */
unsigned int fi_extents_max; /* Size of fiemap_extent array */
- struct fiemap_extent *fi_extents_start; /* Start of fiemap_extent
- * array */
+ struct fiemap_extent __user *fi_extents_start; /* Start of
+ fiemap_extent array */
};
int fiemap_fill_next_extent(struct fiemap_extent_info *info, u64 logical,
u64 phys, u64 len, u32 flags);