vfs: in iomap seek_{hole,data}, return -ENXIO for negative offsets

In the iomap implementations of SEEK_HOLE and SEEK_DATA, make sure we
return -ENXIO for negative offsets.
Inspired-by: NMateusz S <muttdini@gmail.com>
Signed-off-by: NDarrick J. Wong <darrick.wong@oracle.com>
上级 0891f997
......@@ -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) {
......
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