From 9c4306d52021c407fd69160b67de954e9b226031 Mon Sep 17 00:00:00 2001
From: Miles Bader <miles@gnu.org>
Date: Sun, 16 Apr 1995 20:32:23 +0000
Subject: Formerly ext2fs.h.~17~

---
 ext2fs/ext2fs.h | 19 +++++++++++--------
 1 file changed, 11 insertions(+), 8 deletions(-)

(limited to 'ext2fs/ext2fs.h')

diff --git a/ext2fs/ext2fs.h b/ext2fs/ext2fs.h
index 5a3823ad..9ee23604 100644
--- a/ext2fs/ext2fs.h
+++ b/ext2fs/ext2fs.h
@@ -115,13 +115,16 @@ struct user_pager_info
 
 /* ---------------------------------------------------------------- */
 
+/* The block size we assume the kernel device uses.  */
+#define DEV_BSIZE 512
+
 struct user_pager_info *disk_pager;
 mach_port_t disk_pager_port;
-off_t device_size;
-
 void *disk_image;
+
 char *device_name;
 mach_port_t device_port;
+off_t device_size;
 
 /* Our in-core copy of the super-block.  */
 struct ext2_super_block *sblock;
@@ -169,12 +172,12 @@ unsigned long nextgennumber;
 /* ---------------------------------------------------------------- */
 /* Functions for looking inside disk_image */
 
-/* The block size we assume the kernel device uses.  */
-#define DEV_BSIZE 512
-
-/* Returns a pointer to the disk block BLOCK.  */
-#define baddr(block) (((char *)disk_image) + (block) * DEV_BSIZE)
-#define addrb(addr) ((((char *)disk_image) - addr) / DEV_BSIZE)
+#define boffs(block) ((block) * block_size)
+#define offsb(offs) ((block) / block_size)
+#define offsaddr(offs) (((char *)disk_image) + (offs))
+#define addroffs(offs) ((addr) - ((char *)disk_image))
+#define baddr(block) offsaddr(boffs(block))
+#define addrb(addr) offsb(addroffs(addr))
 
 /* Get the descriptor for the block group inode INUM is in.  */
 extern inline struct ext2_group_desc *
-- 
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