From: George Wang <xuw2015@xxxxxxxxx>
now ovl only use O_RDONLY for lower and O_WRONLY for upper file. But if
the file size larger than MAX_NON_LFS(1UL << 31 -1), will suffer
-EOVERFLOW. We should add O_LARGEFILE flag to make it work. Following
script can reproduct it:
work
truncate: cannot open ‘work/sparse’ for writing: Value too large for
defined data type
Reported-by: Alkis Georgopoulos <alkisg@xxxxxxxxx>
Signed-off-by: George Wang <xuw2015@xxxxxxxxx>
---
fs/overlayfs/copy_up.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/fs/overlayfs/copy_up.c b/fs/overlayfs/copy_up.c
index 84d693d..e8ed965 100644
--- a/fs/overlayfs/copy_up.c
+++ b/fs/overlayfs/copy_up.c
@@ -81,11 +81,11 @@ static int ovl_copy_up_data(struct path *old, struct path *new, loff_t len)
if (len == 0)
return 0;
- old_file = ovl_path_open(old, O_RDONLY);
+ old_file = ovl_path_open(old, O_RDONLY | O_LARGEFILE);
if (IS_ERR(old_file))
return PTR_ERR(old_file);
- new_file = ovl_path_open(new, O_WRONLY);
+ new_file = ovl_path_open(new, O_WRONLY | O_LARGEFILE);
if (IS_ERR(new_file)) {
error = PTR_ERR(new_file);
goto out_fput;
--
1.8.3.1
--
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