In the iomap implementations of SEEK_HOLE and SEEK_DATA, make sure we
return -ENXIO for negative offsets instead of badgering the iomap
provider with garbage requests.
Inspired-by: Mateusz S <muttdini@xxxxxxxxx>
Signed-off-by: Darrick J. Wong <darrick.wong@xxxxxxxxxx>
---
fs/iomap.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/fs/iomap.c b/fs/iomap.c
index 432eed8..16f5c074 100644
--- a/fs/iomap.c
+++ b/fs/iomap.c
@@ -610,8 +610,8 @@ iomap_seek_hole(struct inode *inode, loff_t offset, const struct iomap_ops *ops)
loff_t length = size - offset;
loff_t ret;
- /* Nothing to be found beyond the end of the file. */
- if (offset >= size)
+ /* Nothing to be found before or beyond the end of the file. */
+ if (offset < 0 || offset >= size)
return -ENXIO;
while (length > 0) {
@@ -656,8 +656,8 @@ iomap_seek_data(struct inode *inode, loff_t offset, const struct iomap_ops *ops)
loff_t length = size - offset;
loff_t ret;
- /* Nothing to be found beyond the end of the file. */
- if (offset >= size)
+ /* Nothing to be found before or beyond the end of the file. */
+ if (offset < 0 || offset >= size)
return -ENXIO;
while (length > 0) {
