[PATCH 21/30] ocfs2: Safer read_inline_data()

From: Mark Fasheh
Date: Thu Jan 17 2008 - 17:43:45 EST


From: Jan Kara <jack@xxxxxxx>

In ocfs2_read_inline_data() we should store file size in loff_t. Although
the file size should fit in 32 bits we cannot be sure in case filesystem is
corrupted.

Signed-off-by: Jan Kara <jack@xxxxxxx>
Signed-off-by: Mark Fasheh <mark.fasheh@xxxxxxxxxx>
---
fs/ocfs2/aops.c | 7 ++++---
1 files changed, 4 insertions(+), 3 deletions(-)

diff --git a/fs/ocfs2/aops.c b/fs/ocfs2/aops.c
index 2a0eaac..865684f 100644
--- a/fs/ocfs2/aops.c
+++ b/fs/ocfs2/aops.c
@@ -217,7 +217,7 @@ int ocfs2_read_inline_data(struct inode *inode, struct page *page,
struct buffer_head *di_bh)
{
void *kaddr;
- unsigned int size;
+ loff_t size;
struct ocfs2_dinode *di = (struct ocfs2_dinode *)di_bh->b_data;

if (!(le16_to_cpu(di->i_dyn_features) & OCFS2_INLINE_DATA_FL)) {
@@ -231,8 +231,9 @@ int ocfs2_read_inline_data(struct inode *inode, struct page *page,
if (size > PAGE_CACHE_SIZE ||
size > ocfs2_max_inline_data(inode->i_sb)) {
ocfs2_error(inode->i_sb,
- "Inode %llu has with inline data has bad size: %u",
- (unsigned long long)OCFS2_I(inode)->ip_blkno, size);
+ "Inode %llu has with inline data has bad size: %Lu",
+ (unsigned long long)OCFS2_I(inode)->ip_blkno,
+ (unsigned long long)size);
return -EROFS;
}

--
1.5.3.6

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/