From: Theodore Ts'o <tytso@mit.edu>
Date: Mon, 14 May 2012 14:55:09 +0000 (-0400)
Subject: libext2fs: fix bug in unix_io corrupted > 16TB file systems on 32-bit systems
X-Git-Tag: v1.42.3~2
X-Git-Url: https://git.whamcloud.com/gitweb?a=commitdiff_plain;h=40024fdbafdf3875a0950e8fee5dd8bf69ea6b6c;p=tools%2Fe2fsprogs.git

libext2fs: fix bug in unix_io corrupted > 16TB file systems on 32-bit systems

The code was assuming that "unsigned long" was 64-bit, which of course
it isn't on 32-bit systems.  This caused blocks to get written to the
wrong place.

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
---

diff --git a/lib/ext2fs/unix_io.c b/lib/ext2fs/unix_io.c
index 2ce0563..e66b5c8 100644
--- a/lib/ext2fs/unix_io.c
+++ b/lib/ext2fs/unix_io.c
@@ -71,11 +71,11 @@
 	  if ((struct)->magic != (code)) return (code)
 
 struct unix_cache {
-	char		*buf;
-	unsigned long	block;
-	int		access_time;
-	unsigned	dirty:1;
-	unsigned	in_use:1;
+	char			*buf;
+	unsigned long long	block;
+	int			access_time;
+	unsigned		dirty:1;
+	unsigned		in_use:1;
 };
 
 #define CACHE_SIZE 8