[PATCH 2/2] hfsplus: abort hfsplus_lookup if name is too long

[Yangtao Li <frank.li@xxxxxxxx>]

Long file names for hfs is 255 characters.

Signed-off-by: Yangtao Li <frank.li@xxxxxxxx>
---
 fs/hfsplus/dir.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/fs/hfsplus/dir.c b/fs/hfsplus/dir.c
index 876bbb80fb4d..d8fb401e7fdc 100644
--- a/fs/hfsplus/dir.c
+++ b/fs/hfsplus/dir.c
@@ -38,6 +38,9 @@ static struct dentry *hfsplus_lookup(struct inode *dir, struct dentry *dentry,
 	u32 cnid, linkid = 0;
 	u16 type;
 
+	if (dentry->d_name.len > HFSPLUS_MAX_STRLEN)
+		return ERR_PTR(-ENAMETOOLONG);
+
 	sb = dir->i_sb;
 
 	dentry->d_fsdata = NULL;
-- 
2.48.1