From: Sripathi Kodi <sripathik@in.ibm.com>
Date: Mon, 29 Mar 2010 23:13:59 +0000 (-0500)
Subject: 9p: Creating files with names too long should fail with ENAMETOOLONG.
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=11e9b49b7fa056bfc00a56de8956d1d5fe8b84ea;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git

9p: Creating files with names too long should fail with ENAMETOOLONG.

Signed-off-by: Sripathi Kodi <sripathik@in.ibm.com>
Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
---

diff --git a/fs/9p/vfs_inode.c b/fs/9p/vfs_inode.c
index ae8396707707..905f664b8bc6 100644
--- a/fs/9p/vfs_inode.c
+++ b/fs/9p/vfs_inode.c
@@ -660,6 +660,9 @@ static struct dentry *v9fs_vfs_lookup(struct inode *dir, struct dentry *dentry,
 	P9_DPRINTK(P9_DEBUG_VFS, "dir: %p dentry: (%s) %p nameidata: %p\n",
 		dir, dentry->d_name.name, dentry, nameidata);
 
+	if (dentry->d_name.len > NAME_MAX)
+		return ERR_PTR(-ENAMETOOLONG);
+
 	sb = dir->i_sb;
 	v9ses = v9fs_inode2v9ses(dir);
 	dfid = v9fs_fid_lookup(dentry->d_parent);