patch-2.2.17 linux/fs/umsdos/emd.c

• Lines: 17
• Date: Mon Sep 4 18:39:28 2000
• Orig file: v2.2.16/fs/umsdos/emd.c
• Orig date: Mon Sep 4 18:37:06 2000

diff -u --recursive --new-file v2.2.16/fs/umsdos/emd.c linux/fs/umsdos/emd.c
@@ -273,6 +273,16 @@
 	Printk ((KERN_DEBUG "umsdos_emd_dir_readentry /mn/: entering.\n"));
 
 	ret = umsdos_emd_dir_read (filp, (char *) entry, UMSDOS_REC_SIZE);
+
+	/* if this is an invalid entry (invalid name length), ignore it */
+	if( entry->name_len > UMSDOS_MAXNAME )
+	{
+		printk (KERN_WARNING "Ignoring invalid EMD entry with size %d\n", entry->name_len);
+		entry->name_len = 0; 
+		ret = -ENAMETOOLONG; /* notify umssync(8) code that something is wrong */
+	}
+
+
 	if (ret == 0) {	/* if no error */
 		/* Variable size record. Maybe, we have to read some more */
 		int recsize = umsdos_evalrecsize (entry->name_len);