From: Richard Weinberger <richard@nod.at>
Date: Sun, 1 Mar 2015 23:10:25 +0000 (+0100)
Subject: hostfs: Handle bogus st.mode
X-Git-Tag: firefly_0821_release~176^2~1967^2~22
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=2ad2dca6fd28cf24ed64110a8b374fc838838c81;p=firefly-linux-kernel-4.4.55.git

hostfs: Handle bogus st.mode

Make sure that we return EIO if one passes an invalid st.mode
into hostfs.

Signed-off-by: Richard Weinberger <richard@nod.at>
---

diff --git a/fs/hostfs/hostfs_kern.c b/fs/hostfs/hostfs_kern.c
index 92b008f564a4..8163aac81c21 100644
--- a/fs/hostfs/hostfs_kern.c
+++ b/fs/hostfs/hostfs_kern.c
@@ -534,11 +534,13 @@ static int read_name(struct inode *ino, char *name)
 		init_special_inode(ino, st.mode & S_IFMT, rdev);
 		ino->i_op = &hostfs_iops;
 		break;
-
-	default:
+	case S_IFREG:
 		ino->i_op = &hostfs_iops;
 		ino->i_fop = &hostfs_file_fops;
 		ino->i_mapping->a_ops = &hostfs_aops;
+		break;
+	default:
+		return -EIO;
 	}
 
 	ino->i_ino = st.ino;