File file-5.28-btrfs-image.dif of Package file

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File file-5.28-btrfs-image.dif of Package file

From 27ec95a88943d858433a492940c694bac4bc54d0 Mon Sep 17 00:00:00 2001
From: Jeff Mahoney <jeffm@jeffm.io>
Date: Thu, 20 Oct 2016 11:29:21 -0400
Subject: [PATCH] Add BTRFS Filesystem Metadata Image
Patch-mainline: Submitted to file@mx.gw.com, 20 Oct 2016

The btrfs-image in its uncompressed form contains a directly usable
superblock.  Rather than duplicate the superblock printer, split
that out and use it with both the on-disk superblock and the ones
contained within the image.

---
 magic/Magdir/filesystems |   37 +++++++++++++++++++++++--------------
 1 file changed, 23 insertions(+), 14 deletions(-)

Index: file-5.43/magic/Magdir/filesystems
===================================================================
--- file-5.43.orig/magic/Magdir/filesystems
+++ file-5.43/magic/Magdir/filesystems
@@ -2277,20 +2277,29 @@
 >>0x10060        string          >\0             lockproto %s)
 
 # Russell Coker <russell@coker.com.au>
-0x10040		string		_BHRfS_M	BTRFS Filesystem
->0x1012b	string		>\0		label "%s",
->0x10090	lelong		x		sectorsize %d,
->0x10094	lelong		x		nodesize %d,
->0x10098	lelong		x		leafsize %d,
->0x10020	ubelong		x		UUID=%08x-
->0x10024	ubeshort	x		\b%04x-
->0x10026	ubeshort	x		\b%04x-
->0x10028	ubeshort	x		\b%04x-
->0x1002a	ubeshort	x		\b%04x
->0x1002c	ubelong		x		\b%08x,
->0x10078	lequad		x		%lld/
->0x10070	lequad		x		\b%lld bytes used,
->0x10088	lequad		x		%lld devices
+0x10040		string	    	_BHRfS_M
+>0x10000	use				btrfs_super_block
+0		name				btrfs_super_block
+>0x40		string	    	_BHRfS_M	BTRFS Filesystem
+>0x12b		string	    	>\0		label "%s",
+>0x90		lelong	    	x		sectorsize %d,
+>0x94		lelong	    	x		nodesize %d,
+>0x98		lelong	    	x		leafsize %d,
+>0x20		ubelong	    	x		UUID=%08x-
+>0x24		ubeshort	x		\b%04x-
+>0x26		ubeshort	x		\b%04x-
+>0x28		ubeshort	x		\b%04x-
+>0x2a		ubeshort	x		\b%04x
+>0x2c		ubelong	    	x		\b%08x,
+>0x78		lequad	    	x		%lld/
+>0x70		lequad	    	x		\b%lld bytes used,
+>0x88		lequad	    	x		%lld devices
+
+0		lequad	    	0xbd5c25e27295668b	BTRFS Filesystem Metadata Image
+>20		byte	    	1			\b, zlib compressed
+>20		byte	    	0			\b, uncompressed
+>>0x440		string	    	_BHRfS_M		\b, contains
+>>>0x400	use					btrfs_super_block
 
 0		string		btrfs-stream	BTRFS stream file

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