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 (file)
--- 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