From d6ab17f261919d212ec0a9e33d01f46df0ec1fde Mon Sep 17 00:00:00 2001
From: "Darrick J. Wong" <darrick.wong@oracle.com>
Date: Wed, 12 Jul 2017 10:26:47 -0700
Subject: [PATCH] vfs: in iomap seek_{hole,data}, return -ENXIO for negative
offsets
Git-commit: d6ab17f261919d212ec0a9e33d01f46df0ec1fde
Patch-mainline: v4.13-rc1
References: bsc#1070995
In the iomap implementations of SEEK_HOLE and SEEK_DATA, make sure we
return -ENXIO for negative offsets.
Inspired-by: Mateusz S <muttdini@gmail.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Acked-by: Anthony Iliopoulos <ailiopoulos@suse.com>
---
fs/iomap.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/fs/iomap.c b/fs/iomap.c
index 432eed8f091f..16f5c07451bf 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) {
--
2.16.4