1 files changed, 18 insertions, 7 deletions

diff --git a/fs/jffs2/fs.c b/fs/jffs2/fs.c
index ea1f37d4fc58..24cb4c688efc 100644
--- a/fs/jffs2/fs.c
+++ b/fs/jffs2/fs.c
@@ -33,7 +33,7 @@ static int jffs2_do_setattr (struct inode *inode, struct iattr *iattr)
 	struct jffs2_inode_info *f = JFFS2_INODE_INFO(inode);
 	struct jffs2_sb_info *c = JFFS2_SB_INFO(inode->i_sb);
 	struct jffs2_raw_inode *ri;
-	unsigned short dev;
+	union jffs2_device_node dev;
 	unsigned char *mdata = NULL;
 	int mdatalen = 0;
 	unsigned int ivalid;
@@ -51,9 +51,8 @@ static int jffs2_do_setattr (struct inode *inode, struct iattr *iattr)
 	   it out again with the appropriate data attached */
 	if (S_ISBLK(inode->i_mode) || S_ISCHR(inode->i_mode)) {
 		/* For these, we don't actually need to read the old node */
-		dev = old_encode_dev(inode->i_rdev);
+		mdatalen = jffs2_encode_dev(&dev, inode->i_rdev);
 		mdata = (char *)&dev;
-		mdatalen = sizeof(dev);
 		D1(printk(KERN_DEBUG "jffs2_setattr(): Writing %d bytes of kdev_t\n", mdatalen));
 	} else if (S_ISLNK(inode->i_mode)) {
 		down(&f->sem);
@@ -232,6 +231,8 @@ void jffs2_read_inode (struct inode *inode)
 	struct jffs2_inode_info *f;
 	struct jffs2_sb_info *c;
 	struct jffs2_raw_inode latest_node;
+	union jffs2_device_node jdev;
+	dev_t rdev = 0;
 	int ret;
 
 	D1(printk(KERN_DEBUG "jffs2_read_inode(): inode->i_ino == %lu\n", inode->i_ino));
@@ -263,7 +264,6 @@ void jffs2_read_inode (struct inode *inode)
 	inode->i_blocks = (inode->i_size + 511) >> 9;
 
 	switch (inode->i_mode & S_IFMT) {
-		jint16_t rdev;
 
 	case S_IFLNK:
 		inode->i_op = &jffs2_symlink_inode_operations;
@@ -297,8 +297,16 @@ void jffs2_read_inode (struct inode *inode)
 	case S_IFBLK:
 	case S_IFCHR:
 		/* Read the device numbers from the media */
+		if (f->metadata->size != sizeof(jdev.old) &&
+		    f->metadata->size != sizeof(jdev.new)) {
+			printk(KERN_NOTICE "Device node has strange size %d\n", f->metadata->size);
+			up(&f->sem);
+			jffs2_do_clear_inode(c, f);
+			make_bad_inode(inode);
+			return;
+		}
 		D1(printk(KERN_DEBUG "Reading device numbers from flash\n"));
-		if (jffs2_read_dnode(c, f, f->metadata, (char *)&rdev, 0, sizeof(rdev)) < 0) {
+		if (jffs2_read_dnode(c, f, f->metadata, (char *)&jdev, 0, f->metadata->size) < 0) {
 			/* Eep */
 			printk(KERN_NOTICE "Read device numbers for inode %lu failed\n", (unsigned long)inode->i_ino);
 			up(&f->sem);
@@ -306,12 +314,15 @@ void jffs2_read_inode (struct inode *inode)
 			make_bad_inode(inode);
 			return;
 		}
+		if (f->metadata->size == sizeof(jdev.old))
+			rdev = old_decode_dev(je16_to_cpu(jdev.old));
+		else
+			rdev = new_decode_dev(je32_to_cpu(jdev.new));
 
 	case S_IFSOCK:
 	case S_IFIFO:
 		inode->i_op = &jffs2_file_inode_operations;
-		init_special_inode(inode, inode->i_mode,
-				   old_decode_dev((je16_to_cpu(rdev))));
+		init_special_inode(inode, inode->i_mode, rdev);
 		break;
 
 	default: