patch-1.3.45 linux/fs/msdos/namei.c

• Lines: 13
• Date: Sun Nov 26 11:13:00 1995
• Orig file: v1.3.44/linux/fs/msdos/namei.c
• Orig date: Sat Nov 11 17:41:34 1995

diff -u --recursive --new-file v1.3.44/linux/fs/msdos/namei.c linux/fs/msdos/namei.c
@@ -177,6 +177,12 @@
 		return -EACCES;
 	}
 	PRINTK (("msdos_lookup 5\n"));
+	if (!(*result)->i_sb ||
+	    ((*result)->i_sb->s_magic != MSDOS_SUPER_MAGIC)) {
+		/* crossed a mount point into a non-msdos fs */
+		iput(dir);
+		return 0;
+	}
 	if (MSDOS_I(*result)->i_busy) { /* mkdir in progress */
 		iput(*result);
 		iput(dir);