Patchwork [1/5] genext2fs: support large files and filesystems without using large amounts of memory

login
register
mail settings
Submitter Dexuan Cui
Date April 1, 2012, 4:10 p.m.
Message ID <c76f9db84c2eabe0bf704b253a957f695f421936.1333295123.git.dexuan.cui@intel.com>
Download mbox | patch
Permalink /patch/25055/
State Accepted
Commit 8f17e499cf91191727c8767e839738cb39c21655
Headers show

Comments

Dexuan Cui - April 1, 2012, 4:10 p.m.
update_to_1.95.patch was generated by making a diff bewteen the 1.4.1 release
and the latest 1.9.5 version in the cvs repo:
http://genext2fs.cvs.sourceforge.net/viewvc/genext2fs/genext2fs/genext2fs.c?revision=1.95

The patches 0001-0019 come from mailing list of genext2fs-devel
http://sourceforge.net/mailarchive/forum.php?forum_name=genext2fs-devel&max_rows=100&style=flat&viewmonth=201106

Signed-off-by: Dexuan Cui <dexuan.cui@intel.com>
---
 ...01-Fix-warnings-remove-some-unused-macros.patch |   72 ++
 .../0002-Add-put_blk-and-put_nod-routines.patch    | 1123 ++++++++++++++++++++
 .../0003-Add-get_blkmap-and-put_blkmap.patch       |  222 ++++
 ...lker-for-walking-through-directory-entrie.patch |  357 +++++++
 ...05-Make-filesystem-struct-not-an-overloay.patch |  374 +++++++
 ...0006-Improve-the-efficiency-of-extend_blk.patch |  272 +++++
 ...ove-hdlinks-into-the-filesystem-structure.patch |  175 +++
 ...t-the-creation-of-the-filesystem-structur.patch |   95 ++
 ...e-byte-swapping-into-the-get-put-routines.patch |  421 ++++++++
 ...rt-over-to-keeping-the-filesystem-on-disk.patch |  839 +++++++++++++++
 ...les-into-the-filesystem-a-piece-at-a-time.patch |  103 ++
 ...upport-large-file-support-and-rework-hole.patch |  211 ++++
 .../0013-Add-volume-id-support.patch               |   86 ++
 ...014-Remove-unneeded-setting-of-s_reserved.patch |   28 +
 ...-Rework-creating-the-lost-found-directory.patch |   57 +
 ...ix-the-documentation-for-the-new-L-option.patch |   29 +
 .../0017-Fix-file-same-comparison.patch            |   30 +
 ...andle-files-changing-while-we-are-working.patch |   89 ++
 ...ke-sure-superblock-is-clear-on-allocation.patch |   42 +
 .../genext2fs-1.4.1/fix-nbblocks-cast.patch        |   18 +-
 .../genext2fs/genext2fs-1.4.1/update_to_1.95.patch |  119 ++
 meta/recipes-devtools/genext2fs/genext2fs_1.4.1.bb |   24 +-
 22 files changed, 4776 insertions(+), 10 deletions(-)
 create mode 100644 meta/recipes-devtools/genext2fs/genext2fs-1.4.1/0001-Fix-warnings-remove-some-unused-macros.patch
 create mode 100644 meta/recipes-devtools/genext2fs/genext2fs-1.4.1/0002-Add-put_blk-and-put_nod-routines.patch
 create mode 100644 meta/recipes-devtools/genext2fs/genext2fs-1.4.1/0003-Add-get_blkmap-and-put_blkmap.patch
 create mode 100644 meta/recipes-devtools/genext2fs/genext2fs-1.4.1/0004-Add-a-dirwalker-for-walking-through-directory-entrie.patch
 create mode 100644 meta/recipes-devtools/genext2fs/genext2fs-1.4.1/0005-Make-filesystem-struct-not-an-overloay.patch
 create mode 100644 meta/recipes-devtools/genext2fs/genext2fs-1.4.1/0006-Improve-the-efficiency-of-extend_blk.patch
 create mode 100644 meta/recipes-devtools/genext2fs/genext2fs-1.4.1/0007-Move-hdlinks-into-the-filesystem-structure.patch
 create mode 100644 meta/recipes-devtools/genext2fs/genext2fs-1.4.1/0008-Separate-out-the-creation-of-the-filesystem-structur.patch
 create mode 100644 meta/recipes-devtools/genext2fs/genext2fs-1.4.1/0009-Move-byte-swapping-into-the-get-put-routines.patch
 create mode 100644 meta/recipes-devtools/genext2fs/genext2fs-1.4.1/0010-Convert-over-to-keeping-the-filesystem-on-disk.patch
 create mode 100644 meta/recipes-devtools/genext2fs/genext2fs-1.4.1/0011-Copy-files-into-the-filesystem-a-piece-at-a-time.patch
 create mode 100644 meta/recipes-devtools/genext2fs/genext2fs-1.4.1/0012-Add-rev-1-support-large-file-support-and-rework-hole.patch
 create mode 100644 meta/recipes-devtools/genext2fs/genext2fs-1.4.1/0013-Add-volume-id-support.patch
 create mode 100644 meta/recipes-devtools/genext2fs/genext2fs-1.4.1/0014-Remove-unneeded-setting-of-s_reserved.patch
 create mode 100644 meta/recipes-devtools/genext2fs/genext2fs-1.4.1/0015-Rework-creating-the-lost-found-directory.patch
 create mode 100644 meta/recipes-devtools/genext2fs/genext2fs-1.4.1/0016-Fix-the-documentation-for-the-new-L-option.patch
 create mode 100644 meta/recipes-devtools/genext2fs/genext2fs-1.4.1/0017-Fix-file-same-comparison.patch
 create mode 100644 meta/recipes-devtools/genext2fs/genext2fs-1.4.1/0018-Handle-files-changing-while-we-are-working.patch
 create mode 100644 meta/recipes-devtools/genext2fs/genext2fs-1.4.1/0019-Make-sure-superblock-is-clear-on-allocation.patch
 create mode 100644 meta/recipes-devtools/genext2fs/genext2fs-1.4.1/update_to_1.95.patch
Dexuan Cui - April 2, 2012, 2:26 a.m.
BTW, we can see http://sourceforge.net/mailarchive/message.php?msg_id=29071716 for what Corey, the author of the patches to genext2fs, said:
"We (MontaVista) and our customers have been using these patches in production since the time I sent them out and we haven't had any issues"

So, the quality of the patches seems pretty good.

Thanks,
-- Dexuan


> -----Original Message-----
> From: openembedded-core-bounces@lists.openembedded.org
> [mailto:openembedded-core-bounces@lists.openembedded.org] On Behalf Of
> Dexuan Cui
> Sent: Monday, April 02, 2012 12:10 AM
> To: openembedded-core@lists.openembedded.org
> Subject: [OE-core] [PATCH 1/5] genext2fs: support large files and filesystems
> without using large amounts of memory
> 
> update_to_1.95.patch was generated by making a diff bewteen the 1.4.1
> release
> and the latest 1.9.5 version in the cvs repo:
> http://genext2fs.cvs.sourceforge.net/viewvc/genext2fs/genext2fs/genext2fs.c?
> revision=1.95
> 
> The patches 0001-0019 come from mailing list of genext2fs-devel
> http://sourceforge.net/mailarchive/forum.php?forum_name=genext2fs-devel&
> max_rows=100&style=flat&viewmonth=201106
> 
> Signed-off-by: Dexuan Cui <dexuan.cui@intel.com>
> ---
>  ...01-Fix-warnings-remove-some-unused-macros.patch |   72 ++
>  .../0002-Add-put_blk-and-put_nod-routines.patch    | 1123
> ++++++++++++++++++++
>  .../0003-Add-get_blkmap-and-put_blkmap.patch       |  222 ++++
>  ...lker-for-walking-through-directory-entrie.patch |  357 +++++++
>  ...05-Make-filesystem-struct-not-an-overloay.patch |  374 +++++++
>  ...0006-Improve-the-efficiency-of-extend_blk.patch |  272 +++++
>  ...ove-hdlinks-into-the-filesystem-structure.patch |  175 +++
>  ...t-the-creation-of-the-filesystem-structur.patch |   95 ++
>  ...e-byte-swapping-into-the-get-put-routines.patch |  421 ++++++++
>  ...rt-over-to-keeping-the-filesystem-on-disk.patch |  839 +++++++++++++++
>  ...les-into-the-filesystem-a-piece-at-a-time.patch |  103 ++
>  ...upport-large-file-support-and-rework-hole.patch |  211 ++++
>  .../0013-Add-volume-id-support.patch               |   86 ++
>  ...014-Remove-unneeded-setting-of-s_reserved.patch |   28 +
>  ...-Rework-creating-the-lost-found-directory.patch |   57 +
>  ...ix-the-documentation-for-the-new-L-option.patch |   29 +
>  .../0017-Fix-file-same-comparison.patch            |   30 +
>  ...andle-files-changing-while-we-are-working.patch |   89 ++
>  ...ke-sure-superblock-is-clear-on-allocation.patch |   42 +
>  .../genext2fs-1.4.1/fix-nbblocks-cast.patch        |   18 +-
>  .../genext2fs/genext2fs-1.4.1/update_to_1.95.patch |  119 ++
>  meta/recipes-devtools/genext2fs/genext2fs_1.4.1.bb |   24 +-
>  22 files changed, 4776 insertions(+), 10 deletions(-)
> ...

Patch

diff --git a/meta/recipes-devtools/genext2fs/genext2fs-1.4.1/0001-Fix-warnings-remove-some-unused-macros.patch b/meta/recipes-devtools/genext2fs/genext2fs-1.4.1/0001-Fix-warnings-remove-some-unused-macros.patch
new file mode 100644
index 0000000..f981b44
--- /dev/null
+++ b/meta/recipes-devtools/genext2fs/genext2fs-1.4.1/0001-Fix-warnings-remove-some-unused-macros.patch
@@ -0,0 +1,72 @@ 
+Upstream-Status: inappropriate
+
+From 1399df7672ec309523bcd067da24d72aa624f783 Mon Sep 17 00:00:00 2001
+From: Corey Minyard <cminyard@mvista.com>
+Date: Wed, 1 Jun 2011 07:51:24 -0500
+Subject: [PATCH 01/19] Fix warnings, remove some unused macros.
+
+These are some annoying warnings with newer toolchains.  And NAMLEN is
+never used, so just get rid of it.
+---
+ genext2fs.c |   15 +++++++++------
+ 1 files changed, 9 insertions(+), 6 deletions(-)
+
+diff --git a/genext2fs.c b/genext2fs.c
+index f0d797d..284862d 100644
+--- a/genext2fs.c
++++ b/genext2fs.c
+@@ -107,10 +107,8 @@
+ 
+ #if HAVE_DIRENT_H
+ # include <dirent.h>
+-# define NAMLEN(dirent) strlen((dirent)->d_name)
+ #else
+ # define dirent direct
+-# define NAMLEN(dirent) (dirent)->d_namlen
+ # if HAVE_SYS_NDIR_H
+ #  include <sys/ndir.h>
+ # endif
+@@ -1441,7 +1439,8 @@ mkfile_fs(filesystem *fs, uint32 parent_nod, const char *name, uint32 mode, size
+ 		if(!(b = (uint8*)calloc(rndup(size, BLOCKSIZE), 1)))
+ 			error_msg_and_die("not enough mem to read file '%s'", name);
+ 		if(f)
+-			fread(b, size, 1, f); // FIXME: ugly. use mmap() ...
++			if (fread(b, size, 1, f) != 1) // FIXME: ugly. use mmap() ...
++				error_msg_and_die("fread failed");
+ 		extend_blk(fs, nod, b, rndup(size, BLOCKSIZE) / BLOCKSIZE);
+ 		free(b);
+ 	}
+@@ -1673,7 +1672,9 @@ add2fs_from_dir(filesystem *fs, uint32 this_nod, int squash_uids, int squash_per
+ 					if(chdir(dent->d_name) < 0)
+ 						perror_msg_and_die(dent->d_name);
+ 					add2fs_from_dir(fs, this_nod, squash_uids, squash_perms, fs_timestamp, stats);
+-					chdir("..");
++					if (chdir("..") == -1)
++						perror_msg_and_die("..");
++
+ 					break;
+ 				default:
+ 					break;
+@@ -1687,7 +1688,8 @@ add2fs_from_dir(filesystem *fs, uint32 this_nod, int squash_uids, int squash_per
+ 					if(chdir(dent->d_name) < 0)
+ 						perror_msg_and_die(name);
+ 					add2fs_from_dir(fs, nod, squash_uids, squash_perms, fs_timestamp, stats);
+-					chdir("..");
++					if (chdir("..") == -1)
++						perror_msg_and_die("..");
+ 				}
+ 				continue;
+ 			}
+@@ -1733,7 +1735,8 @@ add2fs_from_dir(filesystem *fs, uint32 this_nod, int squash_uids, int squash_per
+ 					if(chdir(dent->d_name) < 0)
+ 						perror_msg_and_die(name);
+ 					add2fs_from_dir(fs, nod, squash_uids, squash_perms, fs_timestamp, stats);
+-					chdir("..");
++					if (chdir("..") == -1)
++						perror_msg_and_die("..");
+ 					break;
+ 				default:
+ 					error_msg("ignoring entry %s", name);
+-- 
+1.7.4.1
+
diff --git a/meta/recipes-devtools/genext2fs/genext2fs-1.4.1/0002-Add-put_blk-and-put_nod-routines.patch b/meta/recipes-devtools/genext2fs/genext2fs-1.4.1/0002-Add-put_blk-and-put_nod-routines.patch
new file mode 100644
index 0000000..ddcd052
--- /dev/null
+++ b/meta/recipes-devtools/genext2fs/genext2fs-1.4.1/0002-Add-put_blk-and-put_nod-routines.patch
@@ -0,0 +1,1123 @@ 
+Upstream-Status: inappropriate
+
+From 8dd6e604777ffeb4d30921592f199cd9bcc8a3e2 Mon Sep 17 00:00:00 2001
+From: Corey Minyard <cminyard@mvista.com>
+Date: Sat, 4 Jun 2011 15:23:29 -0500
+Subject: [PATCH 02/19] Add put_blk and put_nod routines
+
+Add the routines to mark that we are done with a block or inode, and
+add the info structures so that get and put will work.  This doesn't
+do anything functionally, just getting ready for future changes.
+
+Most of the changes are pretty straightforward.  There were changes in
+get_nod() because it could use a later block than the one actually
+fetches.  And walk_bw() needed some special handling to avoid using data
+after the put routine.
+---
+ genext2fs.c |  480 ++++++++++++++++++++++++++++++++++++++++-------------------
+ 1 files changed, 330 insertions(+), 150 deletions(-)
+
+diff --git a/genext2fs.c b/genext2fs.c
+index 284862d..bd06369 100644
+--- a/genext2fs.c
++++ b/genext2fs.c
+@@ -236,18 +236,22 @@ struct stats {
+ 	(((fs)->sb.s_blocks_count - fs->sb.s_first_data_block + \
+ 	  (fs)->sb.s_blocks_per_group - 1) / (fs)->sb.s_blocks_per_group)
+ 
+-// Get group block bitmap (bbm) given the group number
+-#define GRP_GET_GROUP_BBM(fs,grp) ( get_blk((fs),(fs)->gd[(grp)].bg_block_bitmap) )
++// Get/put group block bitmap (bbm) given the group number
++#define GRP_GET_GROUP_BBM(fs,grp,bi) ( get_blk((fs),(fs)->gd[(grp)].bg_block_bitmap,(bi)) )
++#define GRP_PUT_GROUP_BBM(bi) ( put_blk((bi)) )
+ 
+-// Get group inode bitmap (ibm) given the group number
+-#define GRP_GET_GROUP_IBM(fs,grp) ( get_blk((fs),(fs)->gd[(grp)].bg_inode_bitmap) )
++// Get/put group inode bitmap (ibm) given the group number
++#define GRP_GET_GROUP_IBM(fs,grp,bi) ( get_blk((fs),(fs)->gd[(grp)].bg_inode_bitmap,(bi)) )
++#define GRP_PUT_GROUP_IBM(bi) ( put_blk((bi)) )
+ 		
+ // Given an inode number find the group it belongs to
+ #define GRP_GROUP_OF_INODE(fs,nod) ( ((nod)-1) / (fs)->sb.s_inodes_per_group)
+ 
+-//Given an inode number get the inode bitmap that covers it
+-#define GRP_GET_INODE_BITMAP(fs,nod) \
+-	( GRP_GET_GROUP_IBM((fs),GRP_GROUP_OF_INODE((fs),(nod))) )
++//Given an inode number get/put the inode bitmap that covers it
++#define GRP_GET_INODE_BITMAP(fs,nod,bi)				\
++	( GRP_GET_GROUP_IBM((fs),GRP_GROUP_OF_INODE((fs),(nod)),(bi)) )
++#define GRP_PUT_INODE_BITMAP(bi) \
++	( GRP_PUT_GROUP_IBM((bi)) )
+ 
+ //Given an inode number find its offset within the inode bitmap that covers it
+ #define GRP_IBM_OFFSET(fs,nod) \
+@@ -256,9 +260,11 @@ struct stats {
+ // Given a block number find the group it belongs to
+ #define GRP_GROUP_OF_BLOCK(fs,blk) ( ((blk)-1) / (fs)->sb.s_blocks_per_group)
+ 	
+-//Given a block number get the block bitmap that covers it
+-#define GRP_GET_BLOCK_BITMAP(fs,blk) \
+-	( GRP_GET_GROUP_BBM((fs),GRP_GROUP_OF_BLOCK((fs),(blk))) )
++//Given a block number get/put the block bitmap that covers it
++#define GRP_GET_BLOCK_BITMAP(fs,blk,bi)				\
++	( GRP_GET_GROUP_BBM((fs),GRP_GROUP_OF_BLOCK((fs),(blk)),(bi)) )
++#define GRP_PUT_BLOCK_BITMAP(bi) \
++	( GRP_PUT_GROUP_BBM((bi)) )
+ 
+ //Given a block number find its offset within the block bitmap that covers it
+ #define GRP_BBM_OFFSET(fs,blk) \
+@@ -811,24 +817,59 @@ allocated(block b, uint32 item)
+ 	return b[(item-1) / 8] & (1 << ((item-1) % 8));
+ }
+ 
+-// return a given block from a filesystem
++// Used by get_blk/put_blk to hold information about a block owned
++// by the user.
++typedef struct
++{
++	int dummy;
++} blk_info;
++
++// Return a given block from a filesystem.  Make sure to call
++// put_blk when you are done with it.
+ static inline uint8 *
+-get_blk(filesystem *fs, uint32 blk)
++get_blk(filesystem *fs, uint32 blk, blk_info **rbi)
+ {
+ 	return (uint8*)fs + blk*BLOCKSIZE;
+ }
+ 
+-// return a given inode from a filesystem
++static inline void
++put_blk(blk_info *bi)
++{
++}
++
++// Used by get_nod/put_nod to hold information about an inode owned
++// by the user.
++typedef struct
++{
++	blk_info *bi;
++} nod_info;
++
++// Return a given inode from a filesystem.  Make sure to call put_nod()
++// when you are done with the inode.
+ static inline inode *
+-get_nod(filesystem *fs, uint32 nod)
++get_nod(filesystem *fs, uint32 nod, nod_info **rni)
+ {
+-	int grp,offset;
++	int grp, offset, boffset;
+ 	inode *itab;
++	nod_info *ni;
+ 
+-	offset = GRP_IBM_OFFSET(fs,nod);
++	offset = GRP_IBM_OFFSET(fs,nod) - 1;
++	boffset = offset / (BLOCKSIZE / sizeof(inode));
++	offset %= BLOCKSIZE / sizeof(inode);
+ 	grp = GRP_GROUP_OF_INODE(fs,nod);
+-	itab = (inode *)get_blk(fs, fs->gd[grp].bg_inode_table);
+-	return itab+offset-1;
++	ni = malloc(sizeof(*ni));
++	if (!ni)
++		error_msg_and_die("get_nod: out of memory");
++	itab = (inode *)get_blk(fs, fs->gd[grp].bg_inode_table + boffset, &ni->bi);
++	*rni = ni;
++	return itab+offset;
++}
++
++static inline void
++put_nod(nod_info *ni)
++{
++	put_blk(ni->bi);
++	free(ni);
+ }
+ 
+ // allocate a given block/inode in the bitmap
+@@ -870,12 +911,17 @@ alloc_blk(filesystem *fs, uint32 nod)
+ {
+ 	uint32 bk=0;
+ 	uint32 grp,nbgroups;
++	blk_info *bi;
+ 
+ 	grp = GRP_GROUP_OF_INODE(fs,nod);
+ 	nbgroups = GRP_NBGROUPS(fs);
+-	if(!(bk = allocate(get_blk(fs,fs->gd[grp].bg_block_bitmap), 0))) {
+-		for(grp=0;grp<nbgroups && !bk;grp++)
+-			bk=allocate(get_blk(fs,fs->gd[grp].bg_block_bitmap),0);
++	bk = allocate(get_blk(fs, fs->gd[grp].bg_block_bitmap, &bi), 0);
++	put_blk(bi);
++	if (!bk) {
++		for (grp=0; grp<nbgroups && !bk; grp++) {
++			bk = allocate(get_blk(fs, fs->gd[grp].bg_block_bitmap, &bi), 0);
++			put_blk(bi);
++		}
+ 		grp--;
+ 	}
+ 	if (!bk)
+@@ -892,10 +938,12 @@ static void
+ free_blk(filesystem *fs, uint32 bk)
+ {
+ 	uint32 grp;
++	blk_info *bi;
+ 
+ 	grp = bk / fs->sb.s_blocks_per_group;
+ 	bk %= fs->sb.s_blocks_per_group;
+-	deallocate(get_blk(fs,fs->gd[grp].bg_block_bitmap), bk);
++	deallocate(get_blk(fs, fs->gd[grp].bg_block_bitmap, &bi), bk);
++	put_blk(bi);
+ 	fs->gd[grp].bg_free_blocks_count++;
+ 	fs->sb.s_free_blocks_count++;
+ }
+@@ -906,6 +954,7 @@ alloc_nod(filesystem *fs)
+ {
+ 	uint32 nod,best_group=0;
+ 	uint32 grp,nbgroups,avefreei;
++	blk_info *bi;
+ 
+ 	nbgroups = GRP_NBGROUPS(fs);
+ 
+@@ -923,8 +972,10 @@ alloc_nod(filesystem *fs)
+ 			fs->gd[grp].bg_free_blocks_count > fs->gd[best_group].bg_free_blocks_count)
+ 			best_group = grp;
+ 	}
+-	if (!(nod = allocate(get_blk(fs,fs->gd[best_group].bg_inode_bitmap),0)))
++	if (!(nod = allocate(get_blk(fs, fs->gd[best_group].bg_inode_bitmap,
++				     &bi), 0)))
+ 		error_msg_and_die("couldn't allocate an inode (no free inode)");
++	put_blk(bi);
+ 	if(!(fs->gd[best_group].bg_free_inodes_count--))
+ 		error_msg_and_die("group descr. free blocks count == 0 (corrupted fs?)");
+ 	if(!(fs->sb.s_free_inodes_count--))
+@@ -968,24 +1019,35 @@ static uint32
+ walk_bw(filesystem *fs, uint32 nod, blockwalker *bw, int32 *create, uint32 hole)
+ {
+ 	uint32 *bkref = 0;
++	uint32 bk = 0;
+ 	uint32 *b;
+ 	int extend = 0, reduce = 0;
++	inode *inod;
++	nod_info *ni;
++	uint32 *iblk;
++	blk_info *bi1 = NULL, *bi2 = NULL, *bi3 = NULL;
++
+ 	if(create && (*create) < 0)
+ 		reduce = 1;
+-	if(bw->bnum >= get_nod(fs, nod)->i_blocks / INOBLK)
++	inod = get_nod(fs, nod, &ni);
++	if(bw->bnum >= inod->i_blocks / INOBLK)
+ 	{
+ 		if(create && (*create) > 0)
+ 		{
+ 			(*create)--;
+ 			extend = 1;
+ 		}
+-		else	
++		else
++		{
++			put_nod(ni);
+ 			return WALK_END;
++		}
+ 	}
++	iblk = inod->i_block;
+ 	// first direct block
+ 	if(bw->bpdir == EXT2_INIT_BLOCK)
+ 	{
+-		bkref = &get_nod(fs, nod)->i_block[bw->bpdir = 0];
++		bkref = &iblk[bw->bpdir = 0];
+ 		if(extend) // allocate first block
+ 			*bkref = hole ? 0 : alloc_blk(fs,nod);
+ 		if(reduce) // free first block
+@@ -994,7 +1056,7 @@ walk_bw(filesystem *fs, uint32 nod, blockwalker *bw, int32 *create, uint32 hole)
+ 	// direct block
+ 	else if(bw->bpdir < EXT2_NDIR_BLOCKS)
+ 	{
+-		bkref = &get_nod(fs, nod)->i_block[++bw->bpdir];
++		bkref = &iblk[++bw->bpdir];
+ 		if(extend) // allocate block
+ 			*bkref = hole ? 0 : alloc_blk(fs,nod);
+ 		if(reduce) // free block
+@@ -1007,10 +1069,10 @@ walk_bw(filesystem *fs, uint32 nod, blockwalker *bw, int32 *create, uint32 hole)
+ 		bw->bpdir = EXT2_IND_BLOCK;
+ 		bw->bpind = 0;
+ 		if(extend) // allocate indirect block
+-			get_nod(fs, nod)->i_block[bw->bpdir] = alloc_blk(fs,nod);
++			iblk[bw->bpdir] = alloc_blk(fs,nod);
+ 		if(reduce) // free indirect block
+-			free_blk(fs, get_nod(fs, nod)->i_block[bw->bpdir]);
+-		b = (uint32*)get_blk(fs, get_nod(fs, nod)->i_block[bw->bpdir]);
++			free_blk(fs, iblk[bw->bpdir]);
++		b = (uint32*)get_blk(fs, iblk[bw->bpdir], &bi1);
+ 		bkref = &b[bw->bpind];
+ 		if(extend) // allocate first block
+ 			*bkref = hole ? 0 : alloc_blk(fs,nod);
+@@ -1021,7 +1083,7 @@ walk_bw(filesystem *fs, uint32 nod, blockwalker *bw, int32 *create, uint32 hole)
+ 	else if((bw->bpdir == EXT2_IND_BLOCK) && (bw->bpind < BLOCKSIZE/4 - 1))
+ 	{
+ 		bw->bpind++;
+-		b = (uint32*)get_blk(fs, get_nod(fs, nod)->i_block[bw->bpdir]);
++		b = (uint32*)get_blk(fs, iblk[bw->bpdir], &bi1);
+ 		bkref = &b[bw->bpind];
+ 		if(extend) // allocate block
+ 			*bkref = hole ? 0 : alloc_blk(fs,nod);
+@@ -1036,15 +1098,15 @@ walk_bw(filesystem *fs, uint32 nod, blockwalker *bw, int32 *create, uint32 hole)
+ 		bw->bpind = 0;
+ 		bw->bpdind = 0;
+ 		if(extend) // allocate double indirect block
+-			get_nod(fs, nod)->i_block[bw->bpdir] = alloc_blk(fs,nod);
++			iblk[bw->bpdir] = alloc_blk(fs,nod);
+ 		if(reduce) // free double indirect block
+-			free_blk(fs, get_nod(fs, nod)->i_block[bw->bpdir]);
+-		b = (uint32*)get_blk(fs, get_nod(fs, nod)->i_block[bw->bpdir]);
++			free_blk(fs, iblk[bw->bpdir]);
++		b = (uint32*)get_blk(fs, iblk[bw->bpdir], &bi1);
+ 		if(extend) // allocate first indirect block
+ 			b[bw->bpind] = alloc_blk(fs,nod);
+ 		if(reduce) // free  firstindirect block
+ 			free_blk(fs, b[bw->bpind]);
+-		b = (uint32*)get_blk(fs, b[bw->bpind]);
++		b = (uint32*)get_blk(fs, b[bw->bpind], &bi1);
+ 		bkref = &b[bw->bpdind];
+ 		if(extend) // allocate first block
+ 			*bkref = hole ? 0 : alloc_blk(fs,nod);
+@@ -1055,8 +1117,8 @@ walk_bw(filesystem *fs, uint32 nod, blockwalker *bw, int32 *create, uint32 hole)
+ 	else if((bw->bpdir == EXT2_DIND_BLOCK) && (bw->bpdind < BLOCKSIZE/4 - 1))
+ 	{
+ 		bw->bpdind++;
+-		b = (uint32*)get_blk(fs, get_nod(fs, nod)->i_block[bw->bpdir]);
+-		b = (uint32*)get_blk(fs, b[bw->bpind]);
++		b = (uint32*)get_blk(fs, iblk[bw->bpdir], &bi1);
++		b = (uint32*)get_blk(fs, b[bw->bpind], &bi2);
+ 		bkref = &b[bw->bpdind];
+ 		if(extend) // allocate block
+ 			*bkref = hole ? 0 : alloc_blk(fs,nod);
+@@ -1069,12 +1131,12 @@ walk_bw(filesystem *fs, uint32 nod, blockwalker *bw, int32 *create, uint32 hole)
+ 		bw->bnum++;
+ 		bw->bpdind = 0;
+ 		bw->bpind++;
+-		b = (uint32*)get_blk(fs, get_nod(fs, nod)->i_block[bw->bpdir]);
++		b = (uint32*)get_blk(fs, iblk[bw->bpdir], &bi1);
+ 		if(extend) // allocate indirect block
+ 			b[bw->bpind] = alloc_blk(fs,nod);
+ 		if(reduce) // free indirect block
+ 			free_blk(fs, b[bw->bpind]);
+-		b = (uint32*)get_blk(fs, b[bw->bpind]);
++		b = (uint32*)get_blk(fs, b[bw->bpind], &bi2);
+ 		bkref = &b[bw->bpdind];
+ 		if(extend) // allocate first block
+ 			*bkref = hole ? 0 : alloc_blk(fs,nod);
+@@ -1094,20 +1156,20 @@ walk_bw(filesystem *fs, uint32 nod, blockwalker *bw, int32 *create, uint32 hole)
+ 		bw->bpdind = 0;
+ 		bw->bptind = 0;
+ 		if(extend) // allocate triple indirect block
+-			get_nod(fs, nod)->i_block[bw->bpdir] = alloc_blk(fs,nod);
++			iblk[bw->bpdir] = alloc_blk(fs,nod);
+ 		if(reduce) // free triple indirect block
+-			free_blk(fs, get_nod(fs, nod)->i_block[bw->bpdir]);
+-		b = (uint32*)get_blk(fs, get_nod(fs, nod)->i_block[bw->bpdir]);
++			free_blk(fs, iblk[bw->bpdir]);
++		b = (uint32*)get_blk(fs, iblk[bw->bpdir], &bi1);
+ 		if(extend) // allocate first double indirect block
+ 			b[bw->bpind] = alloc_blk(fs,nod);
+ 		if(reduce) // free first double indirect block
+ 			free_blk(fs, b[bw->bpind]);
+-		b = (uint32*)get_blk(fs, b[bw->bpind]);
++		b = (uint32*)get_blk(fs, b[bw->bpind], &bi2);
+ 		if(extend) // allocate first indirect block
+ 			b[bw->bpdind] = alloc_blk(fs,nod);
+ 		if(reduce) // free first indirect block
+ 			free_blk(fs, b[bw->bpind]);
+-		b = (uint32*)get_blk(fs, b[bw->bpdind]);
++		b = (uint32*)get_blk(fs, b[bw->bpdind], &bi3);
+ 		bkref = &b[bw->bptind];
+ 		if(extend) // allocate first data block
+ 			*bkref = hole ? 0 : alloc_blk(fs,nod);
+@@ -1121,9 +1183,9 @@ walk_bw(filesystem *fs, uint32 nod, blockwalker *bw, int32 *create, uint32 hole)
+ 		  (bw->bptind < BLOCKSIZE/4 -1) )
+ 	{
+ 		bw->bptind++;
+-		b = (uint32*)get_blk(fs, get_nod(fs, nod)->i_block[bw->bpdir]);
+-		b = (uint32*)get_blk(fs, b[bw->bpind]);
+-		b = (uint32*)get_blk(fs, b[bw->bpdind]);
++		b = (uint32*)get_blk(fs, iblk[bw->bpdir], &bi1);
++		b = (uint32*)get_blk(fs, b[bw->bpind], &bi2);
++		b = (uint32*)get_blk(fs, b[bw->bpdind], &bi3);
+ 		bkref = &b[bw->bptind];
+ 		if(extend) // allocate data block
+ 			*bkref = hole ? 0 : alloc_blk(fs,nod);
+@@ -1140,13 +1202,13 @@ walk_bw(filesystem *fs, uint32 nod, blockwalker *bw, int32 *create, uint32 hole)
+ 		bw->bnum++;
+ 		bw->bptind = 0;
+ 		bw->bpdind++;
+-		b = (uint32*)get_blk(fs, get_nod(fs, nod)->i_block[bw->bpdir]);
+-		b = (uint32*)get_blk(fs, b[bw->bpind]);
++		b = (uint32*)get_blk(fs, iblk[bw->bpdir], &bi1);
++		b = (uint32*)get_blk(fs, b[bw->bpind], &bi2);
+ 		if(extend) // allocate single indirect block
+ 			b[bw->bpdind] = alloc_blk(fs,nod);
+ 		if(reduce) // free indirect block
+ 			free_blk(fs, b[bw->bpind]);
+-		b = (uint32*)get_blk(fs, b[bw->bpdind]);
++		b = (uint32*)get_blk(fs, b[bw->bpdind], &bi3);
+ 		bkref = &b[bw->bptind];
+ 		if(extend) // allocate first data block
+ 			*bkref = hole ? 0 : alloc_blk(fs,nod);
+@@ -1163,17 +1225,17 @@ walk_bw(filesystem *fs, uint32 nod, blockwalker *bw, int32 *create, uint32 hole)
+ 		bw->bpdind = 0;
+ 		bw->bptind = 0;
+ 		bw->bpind++;
+-		b = (uint32*)get_blk(fs, get_nod(fs, nod)->i_block[bw->bpdir]);
++		b = (uint32*)get_blk(fs, iblk[bw->bpdir], &bi1);
+ 		if(extend) // allocate double indirect block
+ 			b[bw->bpind] = alloc_blk(fs,nod);
+ 		if(reduce) // free double indirect block
+ 			free_blk(fs, b[bw->bpind]);
+-		b = (uint32*)get_blk(fs, b[bw->bpind]);
++		b = (uint32*)get_blk(fs, b[bw->bpind], &bi2);
+ 		if(extend) // allocate single indirect block
+ 			b[bw->bpdind] = alloc_blk(fs,nod);
+ 		if(reduce) // free indirect block
+ 			free_blk(fs, b[bw->bpind]);
+-		b = (uint32*)get_blk(fs, b[bw->bpdind]);
++		b = (uint32*)get_blk(fs, b[bw->bpdind], &bi3);
+ 		bkref = &b[bw->bptind];
+ 		if(extend) // allocate first block
+ 			*bkref = hole ? 0 : alloc_blk(fs,nod);
+@@ -1184,15 +1246,28 @@ walk_bw(filesystem *fs, uint32 nod, blockwalker *bw, int32 *create, uint32 hole)
+ 		error_msg_and_die("file too big !"); 
+ 	/* End change for walking triple indirection */
+ 
+-	if(*bkref)
++	bk = *bkref;
++	if (bi3)
++		put_blk(bi3);
++	if (bi2)
++		put_blk(bi2);
++	if (bi1)
++		put_blk(bi1);
++
++	if(bk)
+ 	{
++		blk_info *bi;
++		uint8 *block;
+ 		bw->bnum++;
+-		if(!reduce && !allocated(GRP_GET_BLOCK_BITMAP(fs,*bkref), GRP_BBM_OFFSET(fs,*bkref)))
+-			error_msg_and_die("[block %d of inode %d is unallocated !]", *bkref, nod);
++		block = GRP_GET_BLOCK_BITMAP(fs,bk,&bi);
++		if(!reduce && !allocated(block, GRP_BBM_OFFSET(fs,bk)))
++			error_msg_and_die("[block %d of inode %d is unallocated !]", bk, nod);
++		GRP_PUT_BLOCK_BITMAP(bi);
+ 	}
+ 	if(extend)
+-		get_nod(fs, nod)->i_blocks = bw->bnum * INOBLK;
+-	return *bkref;
++		inod->i_blocks = bw->bnum * INOBLK;
++	put_nod(ni);
++	return bk;
+ }
+ 
+ // add blocks to an inode (file/dir/etc...)
+@@ -1202,15 +1277,19 @@ extend_blk(filesystem *fs, uint32 nod, block b, int amount)
+ 	int create = amount;
+ 	blockwalker bw, lbw;
+ 	uint32 bk;
++	nod_info *ni;
++	inode *inod;
++
++	inod = get_nod(fs, nod, &ni);
+ 	init_bw(&bw);
+ 	if(amount < 0)
+ 	{
+ 		uint32 i;
+-		for(i = 0; i < get_nod(fs, nod)->i_blocks / INOBLK + amount; i++)
++		for(i = 0; i < inod->i_blocks / INOBLK + amount; i++)
+ 			walk_bw(fs, nod, &bw, 0, 0);
+ 		while(walk_bw(fs, nod, &bw, &create, 0) != WALK_END)
+ 			/*nop*/;
+-		get_nod(fs, nod)->i_blocks += amount * INOBLK;
++		inod->i_blocks += amount * INOBLK;
+ 	}
+ 	else
+ 	{
+@@ -1232,8 +1311,11 @@ extend_blk(filesystem *fs, uint32 nod, block b, int amount)
+ 					}
+ 			if((bk = walk_bw(fs, nod, &bw, &create, !copyb)) == WALK_END)
+ 				break;
+-			if(copyb)
+-				memcpy(get_blk(fs, bk), b + BLOCKSIZE * (amount - create - 1), BLOCKSIZE);
++			if(copyb) {
++				blk_info *bi;
++				memcpy(get_blk(fs, bk, &bi), b + BLOCKSIZE * (amount - create - 1), BLOCKSIZE);
++				put_blk(bi);
++			}
+ 		}
+ 	}
+ }
+@@ -1245,12 +1327,14 @@ add2dir(filesystem *fs, uint32 dnod, uint32 nod, const char* name)
+ 	blockwalker bw;
+ 	uint32 bk;
+ 	uint8 *b;
++	blk_info *bi;
+ 	directory *d;
+ 	int reclen, nlen;
+ 	inode *node;
+ 	inode *pnode;
++	nod_info *dni, *ni;
+ 
+-	pnode = get_nod(fs, dnod);
++	pnode = get_nod(fs, dnod, &dni);
+ 	if((pnode->i_mode & FM_IFMT) != FM_IFDIR)
+ 		error_msg_and_die("can't add '%s' to a non-directory", name);
+ 	if(!*name)
+@@ -1264,7 +1348,7 @@ add2dir(filesystem *fs, uint32 dnod, uint32 nod, const char* name)
+ 	init_bw(&bw);
+ 	while((bk = walk_bw(fs, dnod, &bw, 0, 0)) != WALK_END) // for all blocks in dir
+ 	{
+-		b = get_blk(fs, bk);
++		b = get_blk(fs, bk, &bi);
+ 		// for all dir entries in block
+ 		for(d = (directory*)b; (int8*)d + sizeof(*d) < (int8*)b + BLOCKSIZE; d = (directory*)((int8*)d + d->d_rec_len))
+ 		{
+@@ -1272,11 +1356,12 @@ add2dir(filesystem *fs, uint32 dnod, uint32 nod, const char* name)
+ 			if((!d->d_inode) && (d->d_rec_len >= reclen))
+ 			{
+ 				d->d_inode = nod;
+-				node = get_nod(fs, nod);
++				node = get_nod(fs, nod, &ni);
+ 				node->i_links_count++;
+ 				d->d_name_len = nlen;
+ 				strncpy(d->d_name, name, nlen);
+-				return;
++				put_nod(ni);
++				goto out;
+ 			}
+ 			// if entry with enough room (last one?), shrink it & use it
+ 			if(d->d_rec_len >= (sizeof(directory) + rndup(d->d_name_len, 4) + reclen))
+@@ -1287,11 +1372,12 @@ add2dir(filesystem *fs, uint32 dnod, uint32 nod, const char* name)
+ 				d = (directory*) (((int8*)d) + d->d_rec_len);
+ 				d->d_rec_len = reclen;
+ 				d->d_inode = nod;
+-				node = get_nod(fs, nod);
++				node = get_nod(fs, nod, &ni);
+ 				node->i_links_count++;
+ 				d->d_name_len = nlen;
+ 				strncpy(d->d_name, name, nlen);
+-				return;
++				put_nod(ni);
++				goto out;
+ 			}
+ 		}
+ 	}
+@@ -1300,14 +1386,17 @@ add2dir(filesystem *fs, uint32 dnod, uint32 nod, const char* name)
+ 		error_msg_and_die("get_workblk() failed.");
+ 	d = (directory*)b;
+ 	d->d_inode = nod;
+-	node = get_nod(fs, nod);
++	node = get_nod(fs, nod, &ni);
+ 	node->i_links_count++;
++	put_nod(ni);
+ 	d->d_rec_len = BLOCKSIZE;
+ 	d->d_name_len = nlen;
+ 	strncpy(d->d_name, name, nlen);
+ 	extend_blk(fs, dnod, b, 1);
+-	get_nod(fs, dnod)->i_size += BLOCKSIZE;
++	pnode->i_size += BLOCKSIZE;
+ 	free_workblk(b);
++out:
++	put_nod(dni);
+ }
+ 
+ // find an entry in a directory
+@@ -1316,16 +1405,20 @@ find_dir(filesystem *fs, uint32 nod, const char * name)
+ {
+ 	blockwalker bw;
+ 	uint32 bk;
++	blk_info *bi;
+ 	int nlen = strlen(name);
+ 	init_bw(&bw);
+ 	while((bk = walk_bw(fs, nod, &bw, 0, 0)) != WALK_END)
+ 	{
+ 		directory *d;
+ 		uint8 *b;
+-		b = get_blk(fs, bk);
++		b = get_blk(fs, bk, &bi);
+ 		for(d = (directory*)b; (int8*)d + sizeof(*d) < (int8*)b + BLOCKSIZE; d = (directory*)((int8*)d + d->d_rec_len))
+-			if(d->d_inode && (nlen == d->d_name_len) && !strncmp(d->d_name, name, nlen))
++			if(d->d_inode && (nlen == d->d_name_len) && !strncmp(d->d_name, name, nlen)) {
++				put_blk(bi);
+ 				return d->d_inode;
++			}
++		put_blk(bi);
+ 	}
+ 	return 0;
+ }
+@@ -1361,10 +1454,12 @@ void
+ chmod_fs(filesystem *fs, uint32 nod, uint16 mode, uint16 uid, uint16 gid)
+ {
+ 	inode *node;
+-	node = get_nod(fs, nod);
++	nod_info *ni;
++	node = get_nod(fs, nod, &ni);
+ 	node->i_mode = (node->i_mode & ~FM_IMASK) | (mode & FM_IMASK);
+ 	node->i_uid = uid;
+ 	node->i_gid = gid;
++	put_nod(ni);
+ }
+ 
+ // create a simple inode
+@@ -1373,33 +1468,34 @@ mknod_fs(filesystem *fs, uint32 parent_nod, const char *name, uint16 mode, uint1
+ {
+ 	uint32 nod;
+ 	inode *node;
++	nod_info *ni;
++
++	nod = alloc_nod(fs);
++	node = get_nod(fs, nod, &ni);
++	node->i_mode = mode;
++	add2dir(fs, parent_nod, nod, name);
++	switch(mode & FM_IFMT)
+ 	{
+-		nod = alloc_nod(fs);
+-		node = get_nod(fs, nod);
+-		node->i_mode = mode;
+-		add2dir(fs, parent_nod, nod, name);
+-		switch(mode & FM_IFMT)
+-		{
+-			case FM_IFLNK:
+-				mode = FM_IFLNK | FM_IRWXU | FM_IRWXG | FM_IRWXO;
+-				break;
+-			case FM_IFBLK:
+-			case FM_IFCHR:
+-				((uint8*)get_nod(fs, nod)->i_block)[0] = minor;
+-				((uint8*)get_nod(fs, nod)->i_block)[1] = major;
+-				break;
+-			case FM_IFDIR:
+-				add2dir(fs, nod, nod, ".");
+-				add2dir(fs, nod, parent_nod, "..");
+-				fs->gd[GRP_GROUP_OF_INODE(fs,nod)].bg_used_dirs_count++;
+-				break;
+-		}
++		case FM_IFLNK:
++			mode = FM_IFLNK | FM_IRWXU | FM_IRWXG | FM_IRWXO;
++			break;
++		case FM_IFBLK:
++		case FM_IFCHR:
++			((uint8*)node->i_block)[0] = minor;
++			((uint8*)node->i_block)[1] = major;
++			break;
++		case FM_IFDIR:
++			add2dir(fs, nod, nod, ".");
++			add2dir(fs, nod, parent_nod, "..");
++			fs->gd[GRP_GROUP_OF_INODE(fs,nod)].bg_used_dirs_count++;
++			break;
+ 	}
+ 	node->i_uid = uid;
+ 	node->i_gid = gid;
+ 	node->i_atime = mtime;
+ 	node->i_ctime = ctime;
+ 	node->i_mtime = mtime;
++	put_nod(ni);
+ 	return nod;
+ }
+ 
+@@ -1416,14 +1512,19 @@ static uint32
+ mklink_fs(filesystem *fs, uint32 parent_nod, const char *name, size_t size, uint8 *b, uid_t uid, gid_t gid, uint32 ctime, uint32 mtime)
+ {
+ 	uint32 nod = mknod_fs(fs, parent_nod, name, FM_IFLNK | FM_IRWXU | FM_IRWXG | FM_IRWXO, uid, gid, 0, 0, ctime, mtime);
+-	extend_blk(fs, nod, 0, - (int)get_nod(fs, nod)->i_blocks / INOBLK);
+-	get_nod(fs, nod)->i_size = size;
++	nod_info *ni;
++	inode *node = get_nod(fs, nod, &ni);
++
++	extend_blk(fs, nod, 0, - (int)node->i_blocks / INOBLK);
++	node->i_size = size;
+ 	if(size <= 4 * (EXT2_TIND_BLOCK+1))
+ 	{
+-		strncpy((char*)get_nod(fs, nod)->i_block, (char*)b, size);
++		strncpy((char *)node->i_block, (char *)b, size);
++		put_nod(ni);
+ 		return nod;
+ 	}
+ 	extend_blk(fs, nod, b, rndup(size, BLOCKSIZE) / BLOCKSIZE);
++	put_nod(ni);
+ 	return nod;
+ }
+ 
+@@ -1433,8 +1534,11 @@ mkfile_fs(filesystem *fs, uint32 parent_nod, const char *name, uint32 mode, size
+ {
+ 	uint8 * b;
+ 	uint32 nod = mknod_fs(fs, parent_nod, name, mode|FM_IFREG, uid, gid, 0, 0, ctime, mtime);
+-	extend_blk(fs, nod, 0, - (int)get_nod(fs, nod)->i_blocks / INOBLK);
+-	get_nod(fs, nod)->i_size = size;
++	nod_info *ni;
++	inode *node = get_nod(fs, nod, &ni);
++
++	extend_blk(fs, nod, 0, - (int)node->i_blocks / INOBLK);
++	node->i_size = size;
+ 	if (size) {
+ 		if(!(b = (uint8*)calloc(rndup(size, BLOCKSIZE), 1)))
+ 			error_msg_and_die("not enough mem to read file '%s'", name);
+@@ -1444,6 +1548,7 @@ mkfile_fs(filesystem *fs, uint32 parent_nod, const char *name, uint32 mode, size
+ 		extend_blk(fs, nod, b, rndup(size, BLOCKSIZE) / BLOCKSIZE);
+ 		free(b);
+ 	}
++	put_nod(ni);
+ 	return nod;
+ }
+ 
+@@ -1766,6 +1871,7 @@ swap_goodblocks(filesystem *fs, inode *nod)
+ 	uint32 i,j;
+ 	int done=0;
+ 	uint32 *b,*b2;
++	blk_info *bi, *bi2, *bi3;
+ 
+ 	uint32 nblk = nod->i_blocks / INOBLK;
+ 	if((nod->i_size && !nblk) || ((nod->i_mode & FM_IFBLK) == FM_IFBLK) || ((nod->i_mode & FM_IFCHR) == FM_IFCHR))
+@@ -1773,7 +1879,8 @@ swap_goodblocks(filesystem *fs, inode *nod)
+ 			nod->i_block[i] = swab32(nod->i_block[i]);
+ 	if(nblk <= EXT2_IND_BLOCK)
+ 		return;
+-	swap_block(get_blk(fs, nod->i_block[EXT2_IND_BLOCK]));
++	swap_block(get_blk(fs, nod->i_block[EXT2_IND_BLOCK], &bi));
++	put_blk(bi);
+ 	if(nblk <= EXT2_DIND_BLOCK + BLOCKSIZE/4)
+ 		return;
+ 	/* Currently this will fail b'cos the number of blocks as stored
+@@ -1791,29 +1898,37 @@ swap_goodblocks(filesystem *fs, inode *nod)
+ 	// ths function needs to be fixed for the same reasons - Xav
+ 	assert(nod->i_block[EXT2_DIND_BLOCK] != 0);
+ 	for(i = 0; i < BLOCKSIZE/4; i++)
+-		if(nblk > EXT2_IND_BLOCK + BLOCKSIZE/4 + (BLOCKSIZE/4)*i )
+-			swap_block(get_blk(fs, ((uint32*)get_blk(fs, nod->i_block[EXT2_DIND_BLOCK]))[i]));
+-	swap_block(get_blk(fs, nod->i_block[EXT2_DIND_BLOCK]));
++		if(nblk > EXT2_IND_BLOCK + BLOCKSIZE/4 + (BLOCKSIZE/4)*i ) {
++			swap_block(get_blk(fs, ((uint32*)get_blk(fs, nod->i_block[EXT2_DIND_BLOCK], &bi))[i], &bi2));
++			put_blk(bi);
++			put_blk(bi2);
++		}
++	swap_block(get_blk(fs, nod->i_block[EXT2_DIND_BLOCK], &bi));
++	put_blk(bi);
+ 	if(nblk <= EXT2_IND_BLOCK + BLOCKSIZE/4 + BLOCKSIZE/4 * BLOCKSIZE/4)
+ 		return;
+ 	/* Adding support for triple indirection */
+-	b = (uint32*)get_blk(fs,nod->i_block[EXT2_TIND_BLOCK]);
++	b = (uint32*)get_blk(fs,nod->i_block[EXT2_TIND_BLOCK], &bi);
+ 	for(i=0;i < BLOCKSIZE/4 && !done ; i++) {
+-		b2 = (uint32*)get_blk(fs,b[i]); 
++		b2 = (uint32*)get_blk(fs,b[i], &bi2);
+ 		for(j=0; j<BLOCKSIZE/4;j++) {
+ 			if (nblk > ( EXT2_IND_BLOCK + BLOCKSIZE/4 + 
+ 				     (BLOCKSIZE/4)*(BLOCKSIZE/4) + 
+ 				     i*(BLOCKSIZE/4)*(BLOCKSIZE/4) + 
+-				     j*(BLOCKSIZE/4)) ) 
+-			  swap_block(get_blk(fs,b2[j]));
++				     j*(BLOCKSIZE/4)) )  {
++				swap_block(get_blk(fs,b2[j],&bi3));
++				put_blk(bi3);
++			}
+ 			else {
+ 			  done = 1;
+ 			  break;
+ 			}
+ 		}
+ 		swap_block((uint8 *)b2);
++		put_blk(bi2);
+ 	}
+ 	swap_block((uint8 *)b);
++	put_blk(bi);
+ 	return;
+ }
+ 
+@@ -1823,6 +1938,7 @@ swap_badblocks(filesystem *fs, inode *nod)
+ 	uint32 i,j;
+ 	int done=0;
+ 	uint32 *b,*b2;
++	blk_info *bi, *bi2, *bi3;
+ 
+ 	uint32 nblk = nod->i_blocks / INOBLK;
+ 	if((nod->i_size && !nblk) || ((nod->i_mode & FM_IFBLK) == FM_IFBLK) || ((nod->i_mode & FM_IFCHR) == FM_IFCHR))
+@@ -1830,35 +1946,44 @@ swap_badblocks(filesystem *fs, inode *nod)
+ 			nod->i_block[i] = swab32(nod->i_block[i]);
+ 	if(nblk <= EXT2_IND_BLOCK)
+ 		return;
+-	swap_block(get_blk(fs, nod->i_block[EXT2_IND_BLOCK]));
++	swap_block(get_blk(fs, nod->i_block[EXT2_IND_BLOCK], &bi));
++	put_blk(bi);
+ 	if(nblk <= EXT2_DIND_BLOCK + BLOCKSIZE/4)
+ 		return;
+ 	/* See comment in swap_goodblocks */
+ 	assert(nod->i_block[EXT2_DIND_BLOCK] != 0);
+-	swap_block(get_blk(fs, nod->i_block[EXT2_DIND_BLOCK]));
++	swap_block(get_blk(fs, nod->i_block[EXT2_DIND_BLOCK], &bi));
++	put_blk(bi);
+ 	for(i = 0; i < BLOCKSIZE/4; i++)
+-		if(nblk > EXT2_IND_BLOCK + BLOCKSIZE/4 + (BLOCKSIZE/4)*i )
+-			swap_block(get_blk(fs, ((uint32*)get_blk(fs, nod->i_block[EXT2_DIND_BLOCK]))[i]));
++		if(nblk > EXT2_IND_BLOCK + BLOCKSIZE/4 + (BLOCKSIZE/4)*i ) {
++			swap_block(get_blk(fs, ((uint32*)get_blk(fs, nod->i_block[EXT2_DIND_BLOCK],&bi))[i], &bi2));
++			put_blk(bi);
++			put_blk(bi2);
++		}
+ 	if(nblk <= EXT2_IND_BLOCK + BLOCKSIZE/4 + BLOCKSIZE/4 * BLOCKSIZE/4)
+ 		return;
+ 	/* Adding support for triple indirection */
+-	b = (uint32*)get_blk(fs,nod->i_block[EXT2_TIND_BLOCK]);
++	b = (uint32*)get_blk(fs,nod->i_block[EXT2_TIND_BLOCK],&bi);
+ 	swap_block((uint8 *)b);
+ 	for(i=0;i < BLOCKSIZE/4 && !done ; i++) {
+-		b2 = (uint32*)get_blk(fs,b[i]); 
++		b2 = (uint32*)get_blk(fs,b[i],&bi2);
+ 		swap_block((uint8 *)b2);
+ 		for(j=0; j<BLOCKSIZE/4;j++) {
+ 			if (nblk > ( EXT2_IND_BLOCK + BLOCKSIZE/4 + 
+ 				     (BLOCKSIZE/4)*(BLOCKSIZE/4) + 
+ 				     i*(BLOCKSIZE/4)*(BLOCKSIZE/4) + 
+-				     j*(BLOCKSIZE/4)) ) 
+-			  swap_block(get_blk(fs,b2[j]));
++				     j*(BLOCKSIZE/4)) ) {
++				swap_block(get_blk(fs,b2[j],&bi3));
++				put_blk(bi3);
++			}
+ 			else {
+ 			  done = 1;
+ 			  break;
+ 			}
+ 		}
++		put_blk(bi2);
+ 	}
++	put_blk(bi);
+ 	return;
+ }
+ 
+@@ -1867,9 +1992,11 @@ static void
+ swap_goodfs(filesystem *fs)
+ {
+ 	uint32 i;
++	nod_info *ni;
++
+ 	for(i = 1; i < fs->sb.s_inodes_count; i++)
+ 	{
+-		inode *nod = get_nod(fs, i);
++		inode *nod = get_nod(fs, i, &ni);
+ 		if(nod->i_mode & FM_IFDIR)
+ 		{
+ 			blockwalker bw;
+@@ -1879,13 +2006,16 @@ swap_goodfs(filesystem *fs)
+ 			{
+ 				directory *d;
+ 				uint8 *b;
+-				b = get_blk(fs, bk);
++				blk_info *bi;
++				b = get_blk(fs, bk, &bi);
+ 				for(d = (directory*)b; (int8*)d + sizeof(*d) < (int8*)b + BLOCKSIZE; d = (directory*)((int8*)d + swab16(d->d_rec_len)))
+ 					swap_dir(d);
++				put_blk(bi);
+ 			}
+ 		}
+ 		swap_goodblocks(fs, nod);
+ 		swap_nod(nod);
++		put_nod(ni);
+ 	}
+ 	for(i=0;i<GRP_NBGROUPS(fs);i++)
+ 		swap_gd(&(fs->gd[i]));
+@@ -1901,7 +2031,8 @@ swap_badfs(filesystem *fs)
+ 		swap_gd(&(fs->gd[i]));
+ 	for(i = 1; i < fs->sb.s_inodes_count; i++)
+ 	{
+-		inode *nod = get_nod(fs, i);
++		nod_info *ni;
++		inode *nod = get_nod(fs, i, &ni);
+ 		swap_nod(nod);
+ 		swap_badblocks(fs, nod);
+ 		if(nod->i_mode & FM_IFDIR)
+@@ -1913,9 +2044,11 @@ swap_badfs(filesystem *fs)
+ 			{
+ 				directory *d;
+ 				uint8 *b;
+-				b = get_blk(fs, bk);
++				blk_info *bi;
++				b = get_blk(fs, bk, &bi);
+ 				for(d = (directory*)b; (int8*)d + sizeof(*d) < (int8*)b + BLOCKSIZE; d = (directory*)((int8*)d + d->d_rec_len))
+ 					swap_dir(d);
++				put_blk(bi);
+ 			}
+ 		}
+ 	}
+@@ -1936,6 +2069,8 @@ init_fs(int nbblocks, int nbinodes, int nbresrvd, int holes, uint32 fs_timestamp
+ 	uint32 j;
+ 	uint8 *bbm,*ibm;
+ 	inode *itab0;
++	blk_info *bi;
++	nod_info *ni;
+ 	
+ 	if(nbresrvd < 0)
+ 		error_msg_and_die("reserved blocks value is invalid. Note: options have changed, see --help or the man page.");
+@@ -2014,9 +2149,8 @@ init_fs(int nbblocks, int nbinodes, int nbresrvd, int holes, uint32 fs_timestamp
+ 	/* Mark non-filesystem blocks and inodes as allocated */
+ 	/* Mark system blocks and inodes as allocated         */
+ 	for(i = 0; i<nbgroups;i++) {
+-
+ 		/* Block bitmap */
+-		bbm = get_blk(fs,fs->gd[i].bg_block_bitmap);	
++		bbm = get_blk(fs,fs->gd[i].bg_block_bitmap, &bi);
+ 		//non-filesystem blocks
+ 		for(j = fs->gd[i].bg_free_blocks_count
+ 		        + overhead_per_group + 1; j <= BLOCKSIZE * 8; j++)
+@@ -2024,9 +2158,10 @@ init_fs(int nbblocks, int nbinodes, int nbresrvd, int holes, uint32 fs_timestamp
+ 		//system blocks
+ 		for(j = 1; j <= overhead_per_group; j++)
+ 			allocate(bbm, j); 
++		put_blk(bi);
+ 
+ 		/* Inode bitmap */
+-		ibm = get_blk(fs,fs->gd[i].bg_inode_bitmap);	
++		ibm = get_blk(fs,fs->gd[i].bg_inode_bitmap, &bi);
+ 		//non-filesystem inodes
+ 		for(j = fs->sb.s_inodes_per_group+1; j <= BLOCKSIZE * 8; j++)
+ 			allocate(ibm, j);
+@@ -2035,6 +2170,7 @@ init_fs(int nbblocks, int nbinodes, int nbresrvd, int holes, uint32 fs_timestamp
+ 		if(i == 0)
+ 			for(j = 1; j < EXT2_FIRST_INO; j++)
+ 				allocate(ibm, j);
++		put_blk(bi);
+ 	}
+ 
+ 	// make root inode and directory
+@@ -2042,13 +2178,14 @@ init_fs(int nbblocks, int nbinodes, int nbresrvd, int holes, uint32 fs_timestamp
+ 	/* Also increment the directory count for group 0 */
+ 	fs->gd[0].bg_free_inodes_count--;
+ 	fs->gd[0].bg_used_dirs_count = 1;
+-	itab0 = (inode *)get_blk(fs,fs->gd[0].bg_inode_table);
+-	itab0[EXT2_ROOT_INO-1].i_mode = FM_IFDIR | FM_IRWXU | FM_IRGRP | FM_IROTH | FM_IXGRP | FM_IXOTH; 
+-	itab0[EXT2_ROOT_INO-1].i_ctime = fs_timestamp;
+-	itab0[EXT2_ROOT_INO-1].i_mtime = fs_timestamp;
+-	itab0[EXT2_ROOT_INO-1].i_atime = fs_timestamp;
+-	itab0[EXT2_ROOT_INO-1].i_size = BLOCKSIZE;
+-	itab0[EXT2_ROOT_INO-1].i_links_count = 2;
++	itab0 = get_nod(fs, EXT2_ROOT_INO, &ni);
++	itab0->i_mode = FM_IFDIR | FM_IRWXU | FM_IRGRP | FM_IROTH | FM_IXGRP | FM_IXOTH;
++	itab0->i_ctime = fs_timestamp;
++	itab0->i_mtime = fs_timestamp;
++	itab0->i_atime = fs_timestamp;
++	itab0->i_size = BLOCKSIZE;
++	itab0->i_links_count = 2;
++	put_nod(ni);
+ 
+ 	if(!(b = get_workblk()))
+ 		error_msg_and_die("get_workblk() failed.");
+@@ -2067,6 +2204,8 @@ init_fs(int nbblocks, int nbinodes, int nbresrvd, int holes, uint32 fs_timestamp
+ 	// make lost+found directory and reserve blocks
+ 	if(fs->sb.s_r_blocks_count)
+ 	{
++		inode *node;
++
+ 		nod = mkdir_fs(fs, EXT2_ROOT_INO, "lost+found", FM_IRWXU, 0, 0, fs_timestamp, fs_timestamp);
+ 		memset(b, 0, BLOCKSIZE);
+ 		((directory*)b)->d_rec_len = BLOCKSIZE;
+@@ -2077,7 +2216,9 @@ init_fs(int nbblocks, int nbinodes, int nbresrvd, int holes, uint32 fs_timestamp
+ 			fs->sb.s_r_blocks_count = fs->sb.s_blocks_count * MAX_RESERVED_BLOCKS;
+ 		for(i = 1; i < fs->sb.s_r_blocks_count; i++)
+ 			extend_blk(fs, nod, b, 1);
+-		get_nod(fs, nod)->i_size = fs->sb.s_r_blocks_count * BLOCKSIZE;
++		node = get_nod(fs, nod, &ni);
++		node->i_size = fs->sb.s_r_blocks_count * BLOCKSIZE;
++		put_nod(ni);
+ 	}
+ 	free_workblk(b);
+ 
+@@ -2153,16 +2294,23 @@ write_blocks(filesystem *fs, uint32 nod, FILE* f)
+ {
+ 	blockwalker bw;
+ 	uint32 bk;
+-	int32 fsize = get_nod(fs, nod)->i_size;
++	nod_info *ni;
++	inode *node = get_nod(fs, nod, &ni);
++	int32 fsize = node->i_size;
++	blk_info *bi;
++
+ 	init_bw(&bw);
+ 	while((bk = walk_bw(fs, nod, &bw, 0, 0)) != WALK_END)
+ 	{
+ 		if(fsize <= 0)
+ 			error_msg_and_die("wrong size while saving inode %d", nod);
+-		if(fwrite(get_blk(fs, bk), (fsize > BLOCKSIZE) ? BLOCKSIZE : fsize, 1, f) != 1)
++		if(fwrite(get_blk(fs, bk, &bi),
++			  (fsize > BLOCKSIZE) ? BLOCKSIZE : fsize, 1, f) != 1)
+ 			error_msg_and_die("error while saving inode %d", nod);
++		put_blk(bi);
+ 		fsize -= BLOCKSIZE;
+ 	}
++	put_nod(ni);
+ }
+ 
+ 
+@@ -2171,8 +2319,11 @@ static void
+ print_dev(filesystem *fs, uint32 nod)
+ {
+ 	int minor, major;
+-	minor = ((uint8*)get_nod(fs, nod)->i_block)[0];
+-	major = ((uint8*)get_nod(fs, nod)->i_block)[1];
++	nod_info *ni;
++	inode *node = get_nod(fs, nod, &ni);
++	minor = ((uint8*)node->i_block)[0];
++	major = ((uint8*)node->i_block)[1];
++	put_nod(ni);
+ 	printf("major: %d, minor: %d\n", major, minor);
+ }
+ 
+@@ -2188,7 +2339,8 @@ print_dir(filesystem *fs, uint32 nod)
+ 	{
+ 		directory *d;
+ 		uint8 *b;
+-		b = get_blk(fs, bk);
++		blk_info *bi;
++		b = get_blk(fs, bk, &bi);
+ 		for(d = (directory*)b; (int8*)d + sizeof(*d) < (int8*)b + BLOCKSIZE; d = (directory*)((int8*)d + d->d_rec_len))
+ 			if(d->d_inode)
+ 			{
+@@ -2198,6 +2350,7 @@ print_dir(filesystem *fs, uint32 nod)
+ 					putchar(d->d_name[i]);
+ 				printf("' (inode %d): rec_len: %d (name_len: %d)\n", d->d_inode, d->d_rec_len, d->d_name_len);
+ 			}
++		put_blk(bi);
+ 	}
+ }
+ 
+@@ -2205,14 +2358,18 @@ print_dir(filesystem *fs, uint32 nod)
+ static void
+ print_link(filesystem *fs, uint32 nod)
+ {
+-	if(!get_nod(fs, nod)->i_blocks)
+-		printf("links to '%s'\n", (char*)get_nod(fs, nod)->i_block);
++	nod_info *ni;
++	inode *node = get_nod(fs, nod, &ni);
++
++	if(!node->i_blocks)
++		printf("links to '%s'\n", (char*)node->i_block);
+ 	else
+ 	{
+ 		printf("links to '");
+ 		write_blocks(fs, nod, stdout);
+ 		printf("'\n");
+ 	}
++	put_nod(ni);
+ }
+ 
+ // make a ls-like printout of permissions
+@@ -2281,8 +2438,12 @@ print_inode(filesystem *fs, uint32 nod)
+ {
+ 	char *s;
+ 	char perms[11];
+-	if(!get_nod(fs, nod)->i_mode)
+-		return;
++	nod_info *ni;
++	inode *node = get_nod(fs, nod, &ni);
++	blk_info *bi;
++
++	if(!node->i_mode)
++		goto out;
+ 	switch(nod)
+ 	{
+ 		case EXT2_BAD_INO:
+@@ -2304,15 +2465,18 @@ print_inode(filesystem *fs, uint32 nod)
+ 		default:
+ 			s = (nod >= EXT2_FIRST_INO) ? "normal" : "unknown reserved"; 
+ 	}
+-	printf("inode %d (%s, %d links): ", nod, s, get_nod(fs, nod)->i_links_count);
+-	if(!allocated(GRP_GET_INODE_BITMAP(fs,nod), GRP_IBM_OFFSET(fs,nod)))
++	printf("inode %d (%s, %d links): ", nod, s, node->i_links_count);
++	if(!allocated(GRP_GET_INODE_BITMAP(fs,nod,&bi), GRP_IBM_OFFSET(fs,nod)))
+ 	{
++		GRP_PUT_INODE_BITMAP(bi);
+ 		printf("unallocated\n");
+-		return;
++		goto out;
+ 	}
+-	make_perms(get_nod(fs, nod)->i_mode, perms);
+-	printf("%s,  size: %d byte%s (%d block%s)\n", perms, plural(get_nod(fs, nod)->i_size), plural(get_nod(fs, nod)->i_blocks / INOBLK));
+-	switch(get_nod(fs, nod)->i_mode & FM_IFMT)
++	GRP_PUT_INODE_BITMAP(bi);
++	make_perms(node->i_mode, perms);
++	printf("%s,  size: %d byte%s (%d block%s)\n", perms,
++	       plural(node->i_size), plural(node->i_blocks / INOBLK));
++	switch(node->i_mode & FM_IFMT)
+ 	{
+ 		case FM_IFSOCK:
+ 			list_blocks(fs, nod);
+@@ -2340,6 +2504,8 @@ print_inode(filesystem *fs, uint32 nod)
+ 			list_blocks(fs, nod);
+ 	}
+ 	printf("Done with inode %d\n",nod);
++out:
++	put_nod(ni);
+ }
+ 
+ // describes various fields in a filesystem
+@@ -2347,6 +2513,7 @@ static void
+ print_fs(filesystem *fs)
+ {
+ 	uint32 i;
++	blk_info *bi;
+ 	uint8 *ibm;
+ 
+ 	printf("%d blocks (%d free, %d reserved), first data block: %d\n",
+@@ -2369,13 +2536,16 @@ print_fs(filesystem *fs)
+ 		     fs->gd[i].bg_block_bitmap, fs->gd[i].bg_inode_bitmap,
+ 		     fs->gd[i].bg_inode_table);
+ 		printf("block bitmap allocation:\n");
+-		print_bm(GRP_GET_GROUP_BBM(fs, i),fs->sb.s_blocks_per_group);
++		print_bm(GRP_GET_GROUP_BBM(fs, i, &bi),
++			 fs->sb.s_blocks_per_group);
++		GRP_PUT_GROUP_BBM(bi);
+ 		printf("inode bitmap allocation:\n");
+-		ibm = GRP_GET_GROUP_IBM(fs, i);
++		ibm = GRP_GET_GROUP_IBM(fs, i, &bi);
+ 		print_bm(ibm, fs->sb.s_inodes_per_group);
+ 		for (i = 1; i <= fs->sb.s_inodes_per_group; i++)
+ 			if (allocated(ibm, i))
+ 				print_inode(fs, i);
++		GRP_PUT_GROUP_IBM(bi);
+ 	}
+ }
+ 
+@@ -2646,9 +2816,17 @@ main(int argc, char **argv)
+ 
+ 	if(emptyval) {
+ 		uint32 b;
+-		for(b = 1; b < fs->sb.s_blocks_count; b++)
+-			if(!allocated(GRP_GET_BLOCK_BITMAP(fs,b),GRP_BBM_OFFSET(fs,b)))
+-				memset(get_blk(fs, b), emptyval, BLOCKSIZE);
++		for(b = 1; b < fs->sb.s_blocks_count; b++) {
++			blk_info *bi;
++			if(!allocated(GRP_GET_BLOCK_BITMAP(fs,b,&bi),
++				      GRP_BBM_OFFSET(fs,b))) {
++				blk_info *bi2;
++				memset(get_blk(fs, b, &bi2), emptyval,
++				       BLOCKSIZE);
++				put_blk(bi2);
++			}
++			GRP_PUT_BLOCK_BITMAP(bi);
++		}
+ 	}
+ 	if(verbose)
+ 		print_fs(fs);
+@@ -2658,13 +2836,15 @@ main(int argc, char **argv)
+ 		char fname[MAX_FILENAME];
+ 		char *p;
+ 		FILE *fh;
++		nod_info *ni;
+ 		if(!(nod = find_path(fs, EXT2_ROOT_INO, gopt[i])))
+ 			error_msg_and_die("path %s not found in filesystem", gopt[i]);
+ 		while((p = strchr(gopt[i], '/')))
+ 			*p = '_';
+ 		SNPRINTF(fname, MAX_FILENAME-1, "%s.blk", gopt[i]);
+ 		fh = xfopen(fname, "wb");
+-		fprintf(fh, "%d:", get_nod(fs, nod)->i_size);
++		fprintf(fh, "%d:", get_nod(fs, nod, &ni)->i_size);
++		put_nod(ni);
+ 		flist_blocks(fs, nod, fh);
+ 		fclose(fh);
+ 	}
+-- 
+1.7.4.1
+
diff --git a/meta/recipes-devtools/genext2fs/genext2fs-1.4.1/0003-Add-get_blkmap-and-put_blkmap.patch b/meta/recipes-devtools/genext2fs/genext2fs-1.4.1/0003-Add-get_blkmap-and-put_blkmap.patch
new file mode 100644
index 0000000..1442dfa
--- /dev/null
+++ b/meta/recipes-devtools/genext2fs/genext2fs-1.4.1/0003-Add-get_blkmap-and-put_blkmap.patch
@@ -0,0 +1,222 @@ 
+Upstream-Status: inappropriate
+
+From c196bdeae7932c5d54bbdb7e7574d3cdae46ad02 Mon Sep 17 00:00:00 2001
+From: Corey Minyard <cminyard@mvista.com>
+Date: Sat, 4 Jun 2011 22:04:24 -0500
+Subject: [PATCH 03/19] Add get_blkmap and put_blkmap.
+
+Add routines for getting an putting a block map.  This does not do
+anything functional, but is getting ready for when blockmaps are
+byteswapped when being read and written.
+---
+ genext2fs.c |   84 ++++++++++++++++++++++++++++++++++++++++-------------------
+ 1 files changed, 57 insertions(+), 27 deletions(-)
+
+diff --git a/genext2fs.c b/genext2fs.c
+index bd06369..0b5ba6f 100644
+--- a/genext2fs.c
++++ b/genext2fs.c
+@@ -837,6 +837,36 @@ put_blk(blk_info *bi)
+ {
+ }
+ 
++// Used by get_blkmap/put_blkmap to hold information about an block map
++// owned by the user.
++typedef struct
++{
++	blk_info *bi;
++} blkmap_info;
++
++// Return a given block map from a filesystem.  Make sure to call
++// put_blkmap when you are done with it.
++static inline uint32 *
++get_blkmap(filesystem *fs, uint32 blk, blkmap_info **rbmi)
++{
++	blkmap_info *bmi;
++	uint8 *b;
++
++	bmi = malloc(sizeof(*bmi));
++	if (!bmi)
++		error_msg_and_die("get_blkmap: out of memory");
++	b = get_blk(fs, blk, &bmi->bi);
++	*rbmi = bmi;
++	return (uint32 *) b;
++}
++
++static inline void
++put_blkmap(blkmap_info *bmi)
++{
++	put_blk(bmi->bi);
++	free(bmi);
++}
++
+ // Used by get_nod/put_nod to hold information about an inode owned
+ // by the user.
+ typedef struct
+@@ -1020,12 +1050,12 @@ walk_bw(filesystem *fs, uint32 nod, blockwalker *bw, int32 *create, uint32 hole)
+ {
+ 	uint32 *bkref = 0;
+ 	uint32 bk = 0;
++	blkmap_info *bmi1 = NULL, *bmi2 = NULL, *bmi3 = NULL;
+ 	uint32 *b;
+ 	int extend = 0, reduce = 0;
+ 	inode *inod;
+ 	nod_info *ni;
+ 	uint32 *iblk;
+-	blk_info *bi1 = NULL, *bi2 = NULL, *bi3 = NULL;
+ 
+ 	if(create && (*create) < 0)
+ 		reduce = 1;
+@@ -1072,7 +1102,7 @@ walk_bw(filesystem *fs, uint32 nod, blockwalker *bw, int32 *create, uint32 hole)
+ 			iblk[bw->bpdir] = alloc_blk(fs,nod);
+ 		if(reduce) // free indirect block
+ 			free_blk(fs, iblk[bw->bpdir]);
+-		b = (uint32*)get_blk(fs, iblk[bw->bpdir], &bi1);
++		b = get_blkmap(fs, iblk[bw->bpdir], &bmi1);
+ 		bkref = &b[bw->bpind];
+ 		if(extend) // allocate first block
+ 			*bkref = hole ? 0 : alloc_blk(fs,nod);
+@@ -1083,7 +1113,7 @@ walk_bw(filesystem *fs, uint32 nod, blockwalker *bw, int32 *create, uint32 hole)
+ 	else if((bw->bpdir == EXT2_IND_BLOCK) && (bw->bpind < BLOCKSIZE/4 - 1))
+ 	{
+ 		bw->bpind++;
+-		b = (uint32*)get_blk(fs, iblk[bw->bpdir], &bi1);
++		b = get_blkmap(fs, iblk[bw->bpdir], &bmi1);
+ 		bkref = &b[bw->bpind];
+ 		if(extend) // allocate block
+ 			*bkref = hole ? 0 : alloc_blk(fs,nod);
+@@ -1101,12 +1131,12 @@ walk_bw(filesystem *fs, uint32 nod, blockwalker *bw, int32 *create, uint32 hole)
+ 			iblk[bw->bpdir] = alloc_blk(fs,nod);
+ 		if(reduce) // free double indirect block
+ 			free_blk(fs, iblk[bw->bpdir]);
+-		b = (uint32*)get_blk(fs, iblk[bw->bpdir], &bi1);
++		b = get_blkmap(fs, iblk[bw->bpdir], &bmi1);
+ 		if(extend) // allocate first indirect block
+ 			b[bw->bpind] = alloc_blk(fs,nod);
+ 		if(reduce) // free  firstindirect block
+ 			free_blk(fs, b[bw->bpind]);
+-		b = (uint32*)get_blk(fs, b[bw->bpind], &bi1);
++		b = get_blkmap(fs, b[bw->bpind], &bmi2);
+ 		bkref = &b[bw->bpdind];
+ 		if(extend) // allocate first block
+ 			*bkref = hole ? 0 : alloc_blk(fs,nod);
+@@ -1117,8 +1147,8 @@ walk_bw(filesystem *fs, uint32 nod, blockwalker *bw, int32 *create, uint32 hole)
+ 	else if((bw->bpdir == EXT2_DIND_BLOCK) && (bw->bpdind < BLOCKSIZE/4 - 1))
+ 	{
+ 		bw->bpdind++;
+-		b = (uint32*)get_blk(fs, iblk[bw->bpdir], &bi1);
+-		b = (uint32*)get_blk(fs, b[bw->bpind], &bi2);
++		b = get_blkmap(fs, iblk[bw->bpdir], &bmi1);
++		b = get_blkmap(fs, b[bw->bpind], &bmi2);
+ 		bkref = &b[bw->bpdind];
+ 		if(extend) // allocate block
+ 			*bkref = hole ? 0 : alloc_blk(fs,nod);
+@@ -1131,12 +1161,12 @@ walk_bw(filesystem *fs, uint32 nod, blockwalker *bw, int32 *create, uint32 hole)
+ 		bw->bnum++;
+ 		bw->bpdind = 0;
+ 		bw->bpind++;
+-		b = (uint32*)get_blk(fs, iblk[bw->bpdir], &bi1);
++		b = get_blkmap(fs, iblk[bw->bpdir], &bmi1);
+ 		if(extend) // allocate indirect block
+ 			b[bw->bpind] = alloc_blk(fs,nod);
+ 		if(reduce) // free indirect block
+ 			free_blk(fs, b[bw->bpind]);
+-		b = (uint32*)get_blk(fs, b[bw->bpind], &bi2);
++		b = get_blkmap(fs, b[bw->bpind], &bmi2);
+ 		bkref = &b[bw->bpdind];
+ 		if(extend) // allocate first block
+ 			*bkref = hole ? 0 : alloc_blk(fs,nod);
+@@ -1159,17 +1189,17 @@ walk_bw(filesystem *fs, uint32 nod, blockwalker *bw, int32 *create, uint32 hole)
+ 			iblk[bw->bpdir] = alloc_blk(fs,nod);
+ 		if(reduce) // free triple indirect block
+ 			free_blk(fs, iblk[bw->bpdir]);
+-		b = (uint32*)get_blk(fs, iblk[bw->bpdir], &bi1);
++		b = get_blkmap(fs, iblk[bw->bpdir], &bmi1);
+ 		if(extend) // allocate first double indirect block
+ 			b[bw->bpind] = alloc_blk(fs,nod);
+ 		if(reduce) // free first double indirect block
+ 			free_blk(fs, b[bw->bpind]);
+-		b = (uint32*)get_blk(fs, b[bw->bpind], &bi2);
++		b = get_blkmap(fs, b[bw->bpind], &bmi2);
+ 		if(extend) // allocate first indirect block
+ 			b[bw->bpdind] = alloc_blk(fs,nod);
+ 		if(reduce) // free first indirect block
+ 			free_blk(fs, b[bw->bpind]);
+-		b = (uint32*)get_blk(fs, b[bw->bpdind], &bi3);
++		b = get_blkmap(fs, b[bw->bpdind], &bmi3);
+ 		bkref = &b[bw->bptind];
+ 		if(extend) // allocate first data block
+ 			*bkref = hole ? 0 : alloc_blk(fs,nod);
+@@ -1183,9 +1213,9 @@ walk_bw(filesystem *fs, uint32 nod, blockwalker *bw, int32 *create, uint32 hole)
+ 		  (bw->bptind < BLOCKSIZE/4 -1) )
+ 	{
+ 		bw->bptind++;
+-		b = (uint32*)get_blk(fs, iblk[bw->bpdir], &bi1);
+-		b = (uint32*)get_blk(fs, b[bw->bpind], &bi2);
+-		b = (uint32*)get_blk(fs, b[bw->bpdind], &bi3);
++		b = get_blkmap(fs, iblk[bw->bpdir], &bmi1);
++		b = get_blkmap(fs, b[bw->bpind], &bmi2);
++		b = get_blkmap(fs, b[bw->bpdind], &bmi3);
+ 		bkref = &b[bw->bptind];
+ 		if(extend) // allocate data block
+ 			*bkref = hole ? 0 : alloc_blk(fs,nod);
+@@ -1202,13 +1232,13 @@ walk_bw(filesystem *fs, uint32 nod, blockwalker *bw, int32 *create, uint32 hole)
+ 		bw->bnum++;
+ 		bw->bptind = 0;
+ 		bw->bpdind++;
+-		b = (uint32*)get_blk(fs, iblk[bw->bpdir], &bi1);
+-		b = (uint32*)get_blk(fs, b[bw->bpind], &bi2);
++		b = get_blkmap(fs, iblk[bw->bpdir], &bmi1);
++		b = get_blkmap(fs, b[bw->bpind], &bmi2);
+ 		if(extend) // allocate single indirect block
+ 			b[bw->bpdind] = alloc_blk(fs,nod);
+ 		if(reduce) // free indirect block
+ 			free_blk(fs, b[bw->bpind]);
+-		b = (uint32*)get_blk(fs, b[bw->bpdind], &bi3);
++		b = get_blkmap(fs, b[bw->bpdind], &bmi3);
+ 		bkref = &b[bw->bptind];
+ 		if(extend) // allocate first data block
+ 			*bkref = hole ? 0 : alloc_blk(fs,nod);
+@@ -1225,17 +1255,17 @@ walk_bw(filesystem *fs, uint32 nod, blockwalker *bw, int32 *create, uint32 hole)
+ 		bw->bpdind = 0;
+ 		bw->bptind = 0;
+ 		bw->bpind++;
+-		b = (uint32*)get_blk(fs, iblk[bw->bpdir], &bi1);
++		b = get_blkmap(fs, iblk[bw->bpdir], &bmi1);
+ 		if(extend) // allocate double indirect block
+ 			b[bw->bpind] = alloc_blk(fs,nod);
+ 		if(reduce) // free double indirect block
+ 			free_blk(fs, b[bw->bpind]);
+-		b = (uint32*)get_blk(fs, b[bw->bpind], &bi2);
++		b = get_blkmap(fs, b[bw->bpind], &bmi2);
+ 		if(extend) // allocate single indirect block
+ 			b[bw->bpdind] = alloc_blk(fs,nod);
+ 		if(reduce) // free indirect block
+ 			free_blk(fs, b[bw->bpind]);
+-		b = (uint32*)get_blk(fs, b[bw->bpdind], &bi3);
++		b = get_blkmap(fs, b[bw->bpdind], &bmi3);
+ 		bkref = &b[bw->bptind];
+ 		if(extend) // allocate first block
+ 			*bkref = hole ? 0 : alloc_blk(fs,nod);
+@@ -1247,12 +1277,12 @@ walk_bw(filesystem *fs, uint32 nod, blockwalker *bw, int32 *create, uint32 hole)
+ 	/* End change for walking triple indirection */
+ 
+ 	bk = *bkref;
+-	if (bi3)
+-		put_blk(bi3);
+-	if (bi2)
+-		put_blk(bi2);
+-	if (bi1)
+-		put_blk(bi1);
++	if (bmi3)
++		put_blkmap(bmi3);
++	if (bmi2)
++		put_blkmap(bmi2);
++	if (bmi1)
++		put_blkmap(bmi1);
+ 
+ 	if(bk)
+ 	{
+-- 
+1.7.4.1
+
diff --git a/meta/recipes-devtools/genext2fs/genext2fs-1.4.1/0004-Add-a-dirwalker-for-walking-through-directory-entrie.patch b/meta/recipes-devtools/genext2fs/genext2fs-1.4.1/0004-Add-a-dirwalker-for-walking-through-directory-entrie.patch
new file mode 100644
index 0000000..014a694
--- /dev/null
+++ b/meta/recipes-devtools/genext2fs/genext2fs-1.4.1/0004-Add-a-dirwalker-for-walking-through-directory-entrie.patch
@@ -0,0 +1,357 @@ 
+Upstream-Status: inappropriate
+
+From 3d47e37e21f6a2ced489d49e8bf5a5c24bb9baaf Mon Sep 17 00:00:00 2001
+From: Corey Minyard <cminyard@mvista.com>
+Date: Sun, 5 Jun 2011 09:36:11 -0500
+Subject: [PATCH 04/19] Add a dirwalker for walking through directory entries
+
+The code to walk directory items was messy, to say the least.  Write a
+clean structure to do this.
+
+Also, remove d_name[0].  This is bad style, and newer compilers will
+think it is really a zero-length array and will abort if trying to write
+any data to it, since the compiler thinks it has no contents.
+---
+ genext2fs.c |  210 +++++++++++++++++++++++++++++++++++++++++++----------------
+ 1 files changed, 154 insertions(+), 56 deletions(-)
+
+diff --git a/genext2fs.c b/genext2fs.c
+index 0b5ba6f..03d1b27 100644
+--- a/genext2fs.c
++++ b/genext2fs.c
+@@ -533,7 +533,6 @@ typedef struct
+ typedef struct
+ {
+ 	directory_decl
+-	char d_name[0];
+ } directory;
+ 
+ typedef uint8 block[BLOCKSIZE];
+@@ -795,6 +794,8 @@ static inline uint8 *
+ get_workblk(void)
+ {
+ 	unsigned char* b=calloc(1,BLOCKSIZE);
++	if (!b)
++		error_msg_and_die("get_workblk() failed, out of memory");
+ 	return b;
+ }
+ static inline void
+@@ -902,6 +903,126 @@ put_nod(nod_info *ni)
+ 	free(ni);
+ }
+ 
++// Used to hold state information while walking a directory inode.
++typedef struct
++{
++	directory d;
++	filesystem *fs;
++	uint32 nod;
++	directory *last_d;
++	uint8 *b;
++	blk_info *bi;
++} dirwalker;
++
++// Start a directory walk on the given inode.  You must pass in a
++// dirwalker structure, then use that dirwalker for future operations.
++// Call put_dir when you are done walking the directory.
++static inline directory *
++get_dir(filesystem *fs, uint32 nod, dirwalker *dw)
++{
++	dw->fs = fs;
++	dw->b = get_blk(fs, nod, &dw->bi);
++	dw->nod = nod;
++	dw->last_d = (directory *) dw->b;
++
++	memcpy(&dw->d, dw->last_d, sizeof(directory));
++	return &dw->d;
++}
++
++// Move to the next directory.
++static inline directory *
++next_dir(dirwalker *dw)
++{
++	directory *next_d = (directory *)((int8*)dw->last_d + dw->d.d_rec_len);
++
++	memcpy(dw->last_d, &dw->d, sizeof(directory));
++
++	if (((int8 *) next_d) >= ((int8 *) dw->b + BLOCKSIZE))
++		return NULL;
++
++	dw->last_d = next_d;
++	memcpy(&dw->d, next_d, sizeof(directory));
++	return &dw->d;
++}
++
++// Call then when you are done with the directory walk.
++static inline void
++put_dir(dirwalker *dw)
++{
++	memcpy(dw->last_d, &dw->d, sizeof(directory));
++
++	if (dw->nod == 0)
++		free_workblk(dw->b);
++	else
++		put_blk(dw->bi);
++}
++
++// Create a new directory block with the given inode as it's destination
++// and append it to the current dirwalker.
++static directory *
++new_dir(filesystem *fs, uint32 dnod, const char *name, int nlen, dirwalker *dw)
++{
++	directory *d;
++
++	dw->fs = fs;
++	dw->b = get_workblk();
++	dw->nod = 0;
++	dw->last_d = (directory *) dw->b;
++	d = &dw->d;
++	d->d_inode = dnod;
++	d->d_rec_len = BLOCKSIZE;
++	d->d_name_len = nlen;
++	strncpy(((char *) dw->last_d) + sizeof(directory), name, nlen);
++	return d;
++}
++
++// Shrink the current directory entry, make a new one with the free
++// space, and return the new directory entry (making it current).
++static inline directory *
++shrink_dir(dirwalker *dw, uint32 nod, const char *name, int nlen)
++{
++	int reclen, preclen;
++	directory *d = &dw->d;
++
++	reclen = d->d_rec_len;
++	d->d_rec_len = sizeof(directory) + rndup(d->d_name_len, 4);
++	preclen = d->d_rec_len;
++	reclen -= preclen;
++	memcpy(dw->last_d, &dw->d, sizeof(directory));
++
++	dw->last_d = (directory *) (((int8 *) dw->last_d) + preclen);
++	d->d_rec_len = reclen;
++	d->d_inode = nod;
++	d->d_name_len = nlen;
++	strncpy(((char *) dw->last_d) + sizeof(directory), name, nlen);
++
++	return d;
++}
++
++// Return the current block the directory is walking
++static inline uint8 *
++dir_data(dirwalker *dw)
++{
++	return dw->b;
++}
++
++// Return the pointer to the name for the current directory
++static inline char *
++dir_name(dirwalker *dw)
++{
++	return ((char *) dw->last_d) + sizeof(directory);
++}
++
++// Set the name for the current directory.  Note that this doesn't
++// verify that there is space for the directory name, you must do
++// that yourself.
++static void
++dir_set_name(dirwalker *dw, const char *name, int nlen)
++{
++	dw->d.d_name_len = nlen;
++	strncpy(((char *) dw->last_d) + sizeof(directory), name, nlen);
++}
++
+ // allocate a given block/inode in the bitmap
+ // allocate first free if item == 0
+ static uint32
+@@ -1354,11 +1475,10 @@ extend_blk(filesystem *fs, uint32 nod, block b, int amount)
+ static void
+ add2dir(filesystem *fs, uint32 dnod, uint32 nod, const char* name)
+ {
+-	blockwalker bw;
++	blockwalker bw, lbw;
+ 	uint32 bk;
+-	uint8 *b;
+-	blk_info *bi;
+ 	directory *d;
++	dirwalker dw;
+ 	int reclen, nlen;
+ 	inode *node;
+ 	inode *pnode;
+@@ -1376,55 +1496,46 @@ add2dir(filesystem *fs, uint32 dnod, uint32 nod, const char* name)
+ 	if(reclen > BLOCKSIZE)
+ 		error_msg_and_die("bad name '%s' (too long)", name);
+ 	init_bw(&bw);
++	lbw = bw;
+ 	while((bk = walk_bw(fs, dnod, &bw, 0, 0)) != WALK_END) // for all blocks in dir
+ 	{
+-		b = get_blk(fs, bk, &bi);
+ 		// for all dir entries in block
+-		for(d = (directory*)b; (int8*)d + sizeof(*d) < (int8*)b + BLOCKSIZE; d = (directory*)((int8*)d + d->d_rec_len))
++		for(d = get_dir(fs, bk, &dw); d; d = next_dir(&dw))
+ 		{
+ 			// if empty dir entry, large enough, use it
+ 			if((!d->d_inode) && (d->d_rec_len >= reclen))
+ 			{
+ 				d->d_inode = nod;
+ 				node = get_nod(fs, nod, &ni);
++				dir_set_name(&dw, name, nlen);
++				put_dir(&dw);
+ 				node->i_links_count++;
+-				d->d_name_len = nlen;
+-				strncpy(d->d_name, name, nlen);
+ 				put_nod(ni);
+ 				goto out;
+ 			}
+ 			// if entry with enough room (last one?), shrink it & use it
+ 			if(d->d_rec_len >= (sizeof(directory) + rndup(d->d_name_len, 4) + reclen))
+ 			{
+-				reclen = d->d_rec_len;
+-				d->d_rec_len = sizeof(directory) + rndup(d->d_name_len, 4);
+-				reclen -= d->d_rec_len;
+-				d = (directory*) (((int8*)d) + d->d_rec_len);
+-				d->d_rec_len = reclen;
+-				d->d_inode = nod;
+ 				node = get_nod(fs, nod, &ni);
++				d = shrink_dir(&dw, nod, name, nlen);
++				put_dir(&dw);
+ 				node->i_links_count++;
+-				d->d_name_len = nlen;
+-				strncpy(d->d_name, name, nlen);
+ 				put_nod(ni);
+ 				goto out;
+ 			}
+ 		}
++		put_dir(&dw);
++		lbw = bw;
+ 	}
+ 	// we found no free entry in the directory, so we add a block
+-	if(!(b = get_workblk()))
+-		error_msg_and_die("get_workblk() failed.");
+-	d = (directory*)b;
+-	d->d_inode = nod;
+ 	node = get_nod(fs, nod, &ni);
++	d = new_dir(fs, nod, name, nlen, &dw);
+ 	node->i_links_count++;
+ 	put_nod(ni);
+-	d->d_rec_len = BLOCKSIZE;
+-	d->d_name_len = nlen;
+-	strncpy(d->d_name, name, nlen);
+-	extend_blk(fs, dnod, b, 1);
++	next_dir(&dw); // Force the data into the buffer
++	extend_blk(fs, dnod, dir_data(&dw), 1);
++	put_dir(&dw);
+ 	pnode->i_size += BLOCKSIZE;
+-	free_workblk(b);
+ out:
+ 	put_nod(dni);
+ }
+@@ -1435,20 +1546,18 @@ find_dir(filesystem *fs, uint32 nod, const char * name)
+ {
+ 	blockwalker bw;
+ 	uint32 bk;
+-	blk_info *bi;
+ 	int nlen = strlen(name);
+ 	init_bw(&bw);
+ 	while((bk = walk_bw(fs, nod, &bw, 0, 0)) != WALK_END)
+ 	{
+ 		directory *d;
+-		uint8 *b;
+-		b = get_blk(fs, bk, &bi);
+-		for(d = (directory*)b; (int8*)d + sizeof(*d) < (int8*)b + BLOCKSIZE; d = (directory*)((int8*)d + d->d_rec_len))
+-			if(d->d_inode && (nlen == d->d_name_len) && !strncmp(d->d_name, name, nlen)) {
+-				put_blk(bi);
++		dirwalker dw;
++		for (d = get_dir(fs, bk, &dw); d; d=next_dir(&dw))
++			if(d->d_inode && (nlen == d->d_name_len) && !strncmp(dir_name(&dw), name, nlen)) {
++				put_dir(&dw);
+ 				return d->d_inode;
+ 			}
+-		put_blk(bi);
++		put_dir(&dw);
+ 	}
+ 	return 0;
+ }
+@@ -2090,8 +2199,7 @@ init_fs(int nbblocks, int nbinodes, int nbresrvd, int holes, uint32 fs_timestamp
+ {
+ 	uint32 i;
+ 	filesystem *fs;
+-	directory *d;
+-	uint8 * b;
++	dirwalker dw;
+ 	uint32 nod, first_block;
+ 	uint32 nbgroups,nbinodes_per_group,overhead_per_group,free_blocks,
+ 		free_blocks_per_group,nbblocks_per_group,min_nbgroups;
+@@ -2217,26 +2325,20 @@ init_fs(int nbblocks, int nbinodes, int nbresrvd, int holes, uint32 fs_timestamp
+ 	itab0->i_links_count = 2;
+ 	put_nod(ni);
+ 
+-	if(!(b = get_workblk()))
+-		error_msg_and_die("get_workblk() failed.");
+-	d = (directory*)b;
+-	d->d_inode = EXT2_ROOT_INO;
+-	d->d_rec_len = sizeof(directory)+4;
+-	d->d_name_len = 1;
+-	strcpy(d->d_name, ".");
+-	d = (directory*)(b + d->d_rec_len);
+-	d->d_inode = EXT2_ROOT_INO;
+-	d->d_rec_len = BLOCKSIZE - (sizeof(directory)+4);
+-	d->d_name_len = 2;
+-	strcpy(d->d_name, "..");
+-	extend_blk(fs, EXT2_ROOT_INO, b, 1);
++	new_dir(fs, EXT2_ROOT_INO, ".", 1, &dw);
++	shrink_dir(&dw, EXT2_ROOT_INO, "..", 2);
++	next_dir(&dw); // Force the data into the buffer
++	extend_blk(fs, EXT2_ROOT_INO, dir_data(&dw), 1);
++	put_dir(&dw);
+ 
+ 	// make lost+found directory and reserve blocks
+ 	if(fs->sb.s_r_blocks_count)
+ 	{
+ 		inode *node;
++		uint8 *b;
+ 
+ 		nod = mkdir_fs(fs, EXT2_ROOT_INO, "lost+found", FM_IRWXU, 0, 0, fs_timestamp, fs_timestamp);
++		b = get_workblk();
+ 		memset(b, 0, BLOCKSIZE);
+ 		((directory*)b)->d_rec_len = BLOCKSIZE;
+ 		/* We run into problems with e2fsck if directory lost+found grows
+@@ -2246,11 +2348,11 @@ init_fs(int nbblocks, int nbinodes, int nbresrvd, int holes, uint32 fs_timestamp
+ 			fs->sb.s_r_blocks_count = fs->sb.s_blocks_count * MAX_RESERVED_BLOCKS;
+ 		for(i = 1; i < fs->sb.s_r_blocks_count; i++)
+ 			extend_blk(fs, nod, b, 1);
++		free_workblk(b);
+ 		node = get_nod(fs, nod, &ni);
+ 		node->i_size = fs->sb.s_r_blocks_count * BLOCKSIZE;
+ 		put_nod(ni);
+ 	}
+-	free_workblk(b);
+ 
+ 	// administrative info
+ 	fs->sb.s_state = 1;
+@@ -2368,19 +2470,15 @@ print_dir(filesystem *fs, uint32 nod)
+ 	while((bk = walk_bw(fs, nod, &bw, 0, 0)) != WALK_END)
+ 	{
+ 		directory *d;
+-		uint8 *b;
+-		blk_info *bi;
+-		b = get_blk(fs, bk, &bi);
+-		for(d = (directory*)b; (int8*)d + sizeof(*d) < (int8*)b + BLOCKSIZE; d = (directory*)((int8*)d + d->d_rec_len))
++		dirwalker dw;
++		for (d = get_dir(fs, bk, &dw); d; d = next_dir(&dw))
+ 			if(d->d_inode)
+ 			{
+-				int i;
+ 				printf("entry '");
+-				for(i = 0; i < d->d_name_len; i++)
+-					putchar(d->d_name[i]);
++				fwrite(dir_name(&dw), 1, d->d_name_len, stdout);
+ 				printf("' (inode %d): rec_len: %d (name_len: %d)\n", d->d_inode, d->d_rec_len, d->d_name_len);
+ 			}
+-		put_blk(bi);
++		put_dir(&dw);
+ 	}
+ }
+ 
+-- 
+1.7.4.1
+
diff --git a/meta/recipes-devtools/genext2fs/genext2fs-1.4.1/0005-Make-filesystem-struct-not-an-overloay.patch b/meta/recipes-devtools/genext2fs/genext2fs-1.4.1/0005-Make-filesystem-struct-not-an-overloay.patch
new file mode 100644
index 0000000..ccc33fe
--- /dev/null
+++ b/meta/recipes-devtools/genext2fs/genext2fs-1.4.1/0005-Make-filesystem-struct-not-an-overloay.patch
@@ -0,0 +1,374 @@ 
+Upstream-Status: inappropriate
+
+From f2090608aef32f3012b1c5943b73314176bce832 Mon Sep 17 00:00:00 2001
+From: Corey Minyard <cminyard@mvista.com>
+Date: Sun, 5 Jun 2011 10:09:51 -0500
+Subject: [PATCH 05/19] Make filesystem struct not an overloay
+
+Having the filesystem structure just be a big overlay for the raw data
+means you can't easily carry along any useful metadata in it.  So
+modify the filesystem structure to not be an overlay, but allocate the
+data and various pieces to be components inside the structure.
+---
+ genext2fs.c |  150 +++++++++++++++++++++++++++++++++--------------------------
+ 1 files changed, 84 insertions(+), 66 deletions(-)
+
+diff --git a/genext2fs.c b/genext2fs.c
+index 03d1b27..46c9605 100644
+--- a/genext2fs.c
++++ b/genext2fs.c
+@@ -233,8 +233,8 @@ struct stats {
+ 
+ // Number of groups in the filesystem
+ #define GRP_NBGROUPS(fs) \
+-	(((fs)->sb.s_blocks_count - fs->sb.s_first_data_block + \
+-	  (fs)->sb.s_blocks_per_group - 1) / (fs)->sb.s_blocks_per_group)
++	(((fs)->sb->s_blocks_count - fs->sb->s_first_data_block + \
++	  (fs)->sb->s_blocks_per_group - 1) / (fs)->sb->s_blocks_per_group)
+ 
+ // Get/put group block bitmap (bbm) given the group number
+ #define GRP_GET_GROUP_BBM(fs,grp,bi) ( get_blk((fs),(fs)->gd[(grp)].bg_block_bitmap,(bi)) )
+@@ -245,7 +245,7 @@ struct stats {
+ #define GRP_PUT_GROUP_IBM(bi) ( put_blk((bi)) )
+ 		
+ // Given an inode number find the group it belongs to
+-#define GRP_GROUP_OF_INODE(fs,nod) ( ((nod)-1) / (fs)->sb.s_inodes_per_group)
++#define GRP_GROUP_OF_INODE(fs,nod) ( ((nod)-1) / (fs)->sb->s_inodes_per_group)
+ 
+ //Given an inode number get/put the inode bitmap that covers it
+ #define GRP_GET_INODE_BITMAP(fs,nod,bi)				\
+@@ -255,10 +255,10 @@ struct stats {
+ 
+ //Given an inode number find its offset within the inode bitmap that covers it
+ #define GRP_IBM_OFFSET(fs,nod) \
+-	( (nod) - GRP_GROUP_OF_INODE((fs),(nod))*(fs)->sb.s_inodes_per_group )
++	( (nod) - GRP_GROUP_OF_INODE((fs),(nod))*(fs)->sb->s_inodes_per_group )
+ 
+ // Given a block number find the group it belongs to
+-#define GRP_GROUP_OF_BLOCK(fs,blk) ( ((blk)-1) / (fs)->sb.s_blocks_per_group)
++#define GRP_GROUP_OF_BLOCK(fs,blk) ( ((blk)-1) / (fs)->sb->s_blocks_per_group)
+ 	
+ //Given a block number get/put the block bitmap that covers it
+ #define GRP_GET_BLOCK_BITMAP(fs,blk,bi)				\
+@@ -268,7 +268,7 @@ struct stats {
+ 
+ //Given a block number find its offset within the block bitmap that covers it
+ #define GRP_BBM_OFFSET(fs,blk) \
+-	( (blk) - GRP_GROUP_OF_BLOCK((fs),(blk))*(fs)->sb.s_blocks_per_group )
++	( (blk) - GRP_GROUP_OF_BLOCK((fs),(blk))*(fs)->sb->s_blocks_per_group )
+ 
+ 
+ // used types
+@@ -577,9 +577,10 @@ typedef struct
+ #if BLOCKSIZE == 1024
+ typedef struct
+ {
+-	block zero;            // The famous block 0
+-	superblock sb;         // The superblock
+-	groupdescriptor gd[0]; // The group descriptors
++	uint8 *data;
++	superblock *sb;
++	groupdescriptor *gd;
++	uint32 nheadblocks;
+ } filesystem;
+ #else
+ #error UNHANDLED BLOCKSIZE
+@@ -830,7 +831,7 @@ typedef struct
+ static inline uint8 *
+ get_blk(filesystem *fs, uint32 blk, blk_info **rbi)
+ {
+-	return (uint8*)fs + blk*BLOCKSIZE;
++	return fs->data + blk*BLOCKSIZE;
+ }
+ 
+ static inline void
+@@ -1079,9 +1080,9 @@ alloc_blk(filesystem *fs, uint32 nod)
+ 		error_msg_and_die("couldn't allocate a block (no free space)");
+ 	if(!(fs->gd[grp].bg_free_blocks_count--))
+ 		error_msg_and_die("group descr %d. free blocks count == 0 (corrupted fs?)",grp);
+-	if(!(fs->sb.s_free_blocks_count--))
++	if(!(fs->sb->s_free_blocks_count--))
+ 		error_msg_and_die("superblock free blocks count == 0 (corrupted fs?)");
+-	return fs->sb.s_blocks_per_group*grp + bk;
++	return fs->sb->s_blocks_per_group*grp + bk;
+ }
+ 
+ // free a block
+@@ -1091,12 +1092,12 @@ free_blk(filesystem *fs, uint32 bk)
+ 	uint32 grp;
+ 	blk_info *bi;
+ 
+-	grp = bk / fs->sb.s_blocks_per_group;
+-	bk %= fs->sb.s_blocks_per_group;
++	grp = bk / fs->sb->s_blocks_per_group;
++	bk %= fs->sb->s_blocks_per_group;
+ 	deallocate(get_blk(fs, fs->gd[grp].bg_block_bitmap, &bi), bk);
+ 	put_blk(bi);
+ 	fs->gd[grp].bg_free_blocks_count++;
+-	fs->sb.s_free_blocks_count++;
++	fs->sb->s_free_blocks_count++;
+ }
+ 
+ // allocate an inode
+@@ -1114,7 +1115,7 @@ alloc_nod(filesystem *fs)
+ 	/* find the one with the most free blocks and allocate node there     */
+ 	/* Idea from find_group_dir in fs/ext2/ialloc.c in 2.4.19 kernel      */
+ 	/* We do it for all inodes.                                           */
+-	avefreei  =  fs->sb.s_free_inodes_count / nbgroups;
++	avefreei  =  fs->sb->s_free_inodes_count / nbgroups;
+ 	for(grp=0; grp<nbgroups; grp++) {
+ 		if (fs->gd[grp].bg_free_inodes_count < avefreei ||
+ 		    fs->gd[grp].bg_free_inodes_count == 0)
+@@ -1129,9 +1130,9 @@ alloc_nod(filesystem *fs)
+ 	put_blk(bi);
+ 	if(!(fs->gd[best_group].bg_free_inodes_count--))
+ 		error_msg_and_die("group descr. free blocks count == 0 (corrupted fs?)");
+-	if(!(fs->sb.s_free_inodes_count--))
++	if(!(fs->sb->s_free_inodes_count--))
+ 		error_msg_and_die("superblock free blocks count == 0 (corrupted fs?)");
+-	return fs->sb.s_inodes_per_group*best_group+nod;
++	return fs->sb->s_inodes_per_group*best_group+nod;
+ }
+ 
+ // print a bitmap allocation
+@@ -1451,7 +1452,7 @@ extend_blk(filesystem *fs, uint32 nod, block b, int amount)
+ 		while(create)
+ 		{
+ 			int i, copyb = 0;
+-			if(!(fs->sb.s_reserved[200] & OP_HOLES))
++			if(!(fs->sb->s_reserved[200] & OP_HOLES))
+ 				copyb = 1;
+ 			else
+ 				for(i = 0; i < BLOCKSIZE / 4; i++)
+@@ -2133,7 +2134,7 @@ swap_goodfs(filesystem *fs)
+ 	uint32 i;
+ 	nod_info *ni;
+ 
+-	for(i = 1; i < fs->sb.s_inodes_count; i++)
++	for(i = 1; i < fs->sb->s_inodes_count; i++)
+ 	{
+ 		inode *nod = get_nod(fs, i, &ni);
+ 		if(nod->i_mode & FM_IFDIR)
+@@ -2158,17 +2159,17 @@ swap_goodfs(filesystem *fs)
+ 	}
+ 	for(i=0;i<GRP_NBGROUPS(fs);i++)
+ 		swap_gd(&(fs->gd[i]));
+-	swap_sb(&fs->sb);
++	swap_sb(fs->sb);
+ }
+ 
+ static void
+ swap_badfs(filesystem *fs)
+ {
+ 	uint32 i;
+-	swap_sb(&fs->sb);
++	swap_sb(fs->sb);
+ 	for(i=0;i<GRP_NBGROUPS(fs);i++)
+ 		swap_gd(&(fs->gd[i]));
+-	for(i = 1; i < fs->sb.s_inodes_count; i++)
++	for(i = 1; i < fs->sb->s_inodes_count; i++)
+ 	{
+ 		nod_info *ni;
+ 		inode *nod = get_nod(fs, i, &ni);
+@@ -2242,24 +2243,32 @@ init_fs(int nbblocks, int nbinodes, int nbresrvd, int holes, uint32 fs_timestamp
+ 	free_blocks = nbblocks - overhead_per_group*nbgroups - 1 /*boot block*/;
+ 	free_blocks_per_group = nbblocks_per_group - overhead_per_group;
+ 
+-	if(!(fs = (filesystem*)calloc(nbblocks, BLOCKSIZE)))
++	fs = malloc(sizeof(*fs));
++	if (!fs)
+ 		error_msg_and_die("not enough memory for filesystem");
++	fs->nheadblocks = (((nbgroups * sizeof(groupdescriptor))
++			    + sizeof(superblock) + (BLOCKSIZE - 1))
++			   / BLOCKSIZE);
++	if(!(fs->data = calloc(nbblocks, BLOCKSIZE)))
++		error_msg_and_die("not enough memory for filesystem");
++	fs->sb = (superblock *) (fs->data + BLOCKSIZE);
++	fs->gd = (groupdescriptor *) (fs->sb + 1);
+ 
+ 	// create the superblock for an empty filesystem
+-	fs->sb.s_inodes_count = nbinodes_per_group * nbgroups;
+-	fs->sb.s_blocks_count = nbblocks;
+-	fs->sb.s_r_blocks_count = nbresrvd;
+-	fs->sb.s_free_blocks_count = free_blocks;
+-	fs->sb.s_free_inodes_count = fs->sb.s_inodes_count - EXT2_FIRST_INO + 1;
+-	fs->sb.s_first_data_block = first_block;
+-	fs->sb.s_log_block_size = BLOCKSIZE >> 11;
+-	fs->sb.s_log_frag_size = BLOCKSIZE >> 11;
+-	fs->sb.s_blocks_per_group = nbblocks_per_group;
+-	fs->sb.s_frags_per_group = nbblocks_per_group;
+-	fs->sb.s_inodes_per_group = nbinodes_per_group;
+-	fs->sb.s_wtime = fs_timestamp;
+-	fs->sb.s_magic = EXT2_MAGIC_NUMBER;
+-	fs->sb.s_lastcheck = fs_timestamp;
++	fs->sb->s_inodes_count = nbinodes_per_group * nbgroups;
++	fs->sb->s_blocks_count = nbblocks;
++	fs->sb->s_r_blocks_count = nbresrvd;
++	fs->sb->s_free_blocks_count = free_blocks;
++	fs->sb->s_free_inodes_count = fs->sb->s_inodes_count - EXT2_FIRST_INO + 1;
++	fs->sb->s_first_data_block = first_block;
++	fs->sb->s_log_block_size = BLOCKSIZE >> 11;
++	fs->sb->s_log_frag_size = BLOCKSIZE >> 11;
++	fs->sb->s_blocks_per_group = nbblocks_per_group;
++	fs->sb->s_frags_per_group = nbblocks_per_group;
++	fs->sb->s_inodes_per_group = nbinodes_per_group;
++	fs->sb->s_wtime = fs_timestamp;
++	fs->sb->s_magic = EXT2_MAGIC_NUMBER;
++	fs->sb->s_lastcheck = fs_timestamp;
+ 
+ 	// set up groupdescriptors
+ 	for(i=0, bbmpos=gdsz+2, ibmpos=bbmpos+1, itblpos=ibmpos+1;
+@@ -2301,7 +2310,7 @@ init_fs(int nbblocks, int nbinodes, int nbresrvd, int holes, uint32 fs_timestamp
+ 		/* Inode bitmap */
+ 		ibm = get_blk(fs,fs->gd[i].bg_inode_bitmap, &bi);
+ 		//non-filesystem inodes
+-		for(j = fs->sb.s_inodes_per_group+1; j <= BLOCKSIZE * 8; j++)
++		for(j = fs->sb->s_inodes_per_group+1; j <= BLOCKSIZE * 8; j++)
+ 			allocate(ibm, j);
+ 
+ 		//system inodes
+@@ -2332,7 +2341,7 @@ init_fs(int nbblocks, int nbinodes, int nbresrvd, int holes, uint32 fs_timestamp
+ 	put_dir(&dw);
+ 
+ 	// make lost+found directory and reserve blocks
+-	if(fs->sb.s_r_blocks_count)
++	if(fs->sb->s_r_blocks_count)
+ 	{
+ 		inode *node;
+ 		uint8 *b;
+@@ -2344,23 +2353,23 @@ init_fs(int nbblocks, int nbinodes, int nbresrvd, int holes, uint32 fs_timestamp
+ 		/* We run into problems with e2fsck if directory lost+found grows
+ 		 * bigger than this. Need to find out why this happens - sundar
+ 		 */
+-		if (fs->sb.s_r_blocks_count > fs->sb.s_blocks_count * MAX_RESERVED_BLOCKS ) 
+-			fs->sb.s_r_blocks_count = fs->sb.s_blocks_count * MAX_RESERVED_BLOCKS;
+-		for(i = 1; i < fs->sb.s_r_blocks_count; i++)
++		if (fs->sb->s_r_blocks_count > fs->sb->s_blocks_count * MAX_RESERVED_BLOCKS )
++			fs->sb->s_r_blocks_count = fs->sb->s_blocks_count * MAX_RESERVED_BLOCKS;
++		for(i = 1; i < fs->sb->s_r_blocks_count; i++)
+ 			extend_blk(fs, nod, b, 1);
+ 		free_workblk(b);
+ 		node = get_nod(fs, nod, &ni);
+-		node->i_size = fs->sb.s_r_blocks_count * BLOCKSIZE;
++		node->i_size = fs->sb->s_r_blocks_count * BLOCKSIZE;
+ 		put_nod(ni);
+ 	}
+ 
+ 	// administrative info
+-	fs->sb.s_state = 1;
+-	fs->sb.s_max_mnt_count = 20;
++	fs->sb->s_state = 1;
++	fs->sb->s_max_mnt_count = 20;
+ 
+ 	// options for me
+ 	if(holes)
+-		fs->sb.s_reserved[200] |= OP_HOLES;
++		fs->sb->s_reserved[200] |= OP_HOLES;
+ 	
+ 	return fs;
+ }
+@@ -2377,20 +2386,29 @@ load_fs(FILE * fh, int swapit)
+ 	fssize = (fssize + BLOCKSIZE - 1) / BLOCKSIZE;
+ 	if(fssize < 16) // totally arbitrary
+ 		error_msg_and_die("too small filesystem");
+-	if(!(fs = (filesystem*)calloc(fssize, BLOCKSIZE)))
++	fs = malloc(sizeof(*fs));
++	if (!fs)
++		error_msg_and_die("not enough memory for filesystem");
++	if(!(fs->data = calloc(fssize, BLOCKSIZE)))
+ 		error_msg_and_die("not enough memory for filesystem");
+-	if(fread(fs, BLOCKSIZE, fssize, fh) != fssize)
++	if(fread(fs->data, BLOCKSIZE, fssize, fh) != fssize)
+ 		perror_msg_and_die("input filesystem image");
++	fs->sb = (superblock *) (fs->data + BLOCKSIZE);
++	fs->gd = (groupdescriptor *) (fs->sb + 1);
+ 	if(swapit)
+ 		swap_badfs(fs);
+-	if(fs->sb.s_rev_level || (fs->sb.s_magic != EXT2_MAGIC_NUMBER))
++	if(fs->sb->s_rev_level || (fs->sb->s_magic != EXT2_MAGIC_NUMBER))
+ 		error_msg_and_die("not a suitable ext2 filesystem");
++	fs->nheadblocks = (((GRP_NBGROUPS(fs) * sizeof(groupdescriptor))
++			    + sizeof(superblock) + (BLOCKSIZE - 1))
++			   / BLOCKSIZE);
+ 	return fs;
+ }
+ 
+ static void
+ free_fs(filesystem *fs)
+ {
++	free(fs->data);
+ 	free(fs);
+ }
+ 
+@@ -2645,19 +2663,19 @@ print_fs(filesystem *fs)
+ 	uint8 *ibm;
+ 
+ 	printf("%d blocks (%d free, %d reserved), first data block: %d\n",
+-	       fs->sb.s_blocks_count, fs->sb.s_free_blocks_count,
+-	       fs->sb.s_r_blocks_count, fs->sb.s_first_data_block);
+-	printf("%d inodes (%d free)\n", fs->sb.s_inodes_count,
+-	       fs->sb.s_free_inodes_count);
++	       fs->sb->s_blocks_count, fs->sb->s_free_blocks_count,
++	       fs->sb->s_r_blocks_count, fs->sb->s_first_data_block);
++	printf("%d inodes (%d free)\n", fs->sb->s_inodes_count,
++	       fs->sb->s_free_inodes_count);
+ 	printf("block size = %d, frag size = %d\n",
+-	       fs->sb.s_log_block_size ? (fs->sb.s_log_block_size << 11) : 1024,
+-	       fs->sb.s_log_frag_size ? (fs->sb.s_log_frag_size << 11) : 1024);
++	       fs->sb->s_log_block_size ? (fs->sb->s_log_block_size << 11) : 1024,
++	       fs->sb->s_log_frag_size ? (fs->sb->s_log_frag_size << 11) : 1024);
+ 	printf("number of groups: %d\n",GRP_NBGROUPS(fs));
+ 	printf("%d blocks per group,%d frags per group,%d inodes per group\n",
+-	     fs->sb.s_blocks_per_group, fs->sb.s_frags_per_group,
+-	     fs->sb.s_inodes_per_group);
++	     fs->sb->s_blocks_per_group, fs->sb->s_frags_per_group,
++	     fs->sb->s_inodes_per_group);
+ 	printf("Size of inode table: %d blocks\n",
+-		(int)(fs->sb.s_inodes_per_group * sizeof(inode) / BLOCKSIZE));
++		(int)(fs->sb->s_inodes_per_group * sizeof(inode) / BLOCKSIZE));
+ 	for (i = 0; i < GRP_NBGROUPS(fs); i++) {
+ 		printf("Group No: %d\n", i+1);
+ 		printf("block bitmap: block %d,inode bitmap: block %d, inode table: block %d\n",
+@@ -2665,12 +2683,12 @@ print_fs(filesystem *fs)
+ 		     fs->gd[i].bg_inode_table);
+ 		printf("block bitmap allocation:\n");
+ 		print_bm(GRP_GET_GROUP_BBM(fs, i, &bi),
+-			 fs->sb.s_blocks_per_group);
++			 fs->sb->s_blocks_per_group);
+ 		GRP_PUT_GROUP_BBM(bi);
+ 		printf("inode bitmap allocation:\n");
+ 		ibm = GRP_GET_GROUP_IBM(fs, i, &bi);
+-		print_bm(ibm, fs->sb.s_inodes_per_group);
+-		for (i = 1; i <= fs->sb.s_inodes_per_group; i++)
++		print_bm(ibm, fs->sb->s_inodes_per_group);
++		for (i = 1; i <= fs->sb->s_inodes_per_group; i++)
+ 			if (allocated(ibm, i))
+ 				print_inode(fs, i);
+ 		GRP_PUT_GROUP_IBM(bi);
+@@ -2680,11 +2698,11 @@ print_fs(filesystem *fs)
+ static void
+ dump_fs(filesystem *fs, FILE * fh, int swapit)
+ {
+-	uint32 nbblocks = fs->sb.s_blocks_count;
+-	fs->sb.s_reserved[200] = 0;
++	uint32 nbblocks = fs->sb->s_blocks_count;
++	fs->sb->s_reserved[200] = 0;
+ 	if(swapit)
+ 		swap_goodfs(fs);
+-	if(fwrite(fs, BLOCKSIZE, nbblocks, fh) < nbblocks)
++	if(fwrite(fs->data, BLOCKSIZE, nbblocks, fh) < nbblocks)
+ 		perror_msg_and_die("output filesystem image");
+ 	if(swapit)
+ 		swap_badfs(fs);
+@@ -2944,7 +2962,7 @@ main(int argc, char **argv)
+ 
+ 	if(emptyval) {
+ 		uint32 b;
+-		for(b = 1; b < fs->sb.s_blocks_count; b++) {
++		for(b = 1; b < fs->sb->s_blocks_count; b++) {
+ 			blk_info *bi;
+ 			if(!allocated(GRP_GET_BLOCK_BITMAP(fs,b,&bi),
+ 				      GRP_BBM_OFFSET(fs,b))) {
+-- 
+1.7.4.1
+
diff --git a/meta/recipes-devtools/genext2fs/genext2fs-1.4.1/0006-Improve-the-efficiency-of-extend_blk.patch b/meta/recipes-devtools/genext2fs/genext2fs-1.4.1/0006-Improve-the-efficiency-of-extend_blk.patch
new file mode 100644
index 0000000..494e3f9
--- /dev/null
+++ b/meta/recipes-devtools/genext2fs/genext2fs-1.4.1/0006-Improve-the-efficiency-of-extend_blk.patch
@@ -0,0 +1,272 @@ 
+Upstream-Status: inappropriate
+
+From ea6cbe2880e02026667b9007db9a742be7dcd52b Mon Sep 17 00:00:00 2001
+From: Corey Minyard <cminyard@mvista.com>
+Date: Sun, 5 Jun 2011 10:26:11 -0500
+Subject: [PATCH 06/19] Improve the efficiency of extend_blk
+
+When doing multiple extensions operations on the same inode, extend_blk()
+would search to the end every time.  In the current structure, that means
+when creating the reserved blocks, it could parse over the block list
+many thousands of time on a large filesystem.  For an 800MB filesystem,
+that took 2/3rds of the time.
+
+So create a structure for holding the inode position and use it to
+know where the end is.  This neatens things up a bit, too, more
+clearly showing when a truncate or extend is occuring.  In future
+changes, this will also make it efficient for supporting very large
+files that cannot be fully allocated in memory.
+---
+ genext2fs.c |  147 ++++++++++++++++++++++++++++++++++++++++-------------------
+ 1 files changed, 100 insertions(+), 47 deletions(-)
+
+diff --git a/genext2fs.c b/genext2fs.c
+index 46c9605..e45e520 100644
+--- a/genext2fs.c
++++ b/genext2fs.c
+@@ -436,6 +436,17 @@ swab32(uint32 val)
+ 			((val<<8)&0xFF0000) | (val<<24));
+ }
+ 
++static inline int
++is_blk_empty(uint8 *b)
++{
++	uint32 i;
++	uint32 *v = (uint32 *) b;
++
++	for(i = 0; i < BLOCKSIZE / 4; i++)
++		if (*v++)
++			return 0;
++	return 1;
++}
+ 
+ // on-disk structures
+ // this trick makes me declare things only once
+@@ -1165,7 +1176,6 @@ init_bw(blockwalker *bw)
+ //				  used after being freed, so once you start
+ //				  freeing blocks don't stop until the end of
+ //				  the file. moreover, i_blocks isn't updated.
+-//				  in fact, don't do that, just use extend_blk
+ // if hole!=0, create a hole in the file
+ static uint32
+ walk_bw(filesystem *fs, uint32 nod, blockwalker *bw, int32 *create, uint32 hole)
+@@ -1422,52 +1432,80 @@ walk_bw(filesystem *fs, uint32 nod, blockwalker *bw, int32 *create, uint32 hole)
+ 	return bk;
+ }
+ 
+-// add blocks to an inode (file/dir/etc...)
+-static void
+-extend_blk(filesystem *fs, uint32 nod, block b, int amount)
++typedef struct
+ {
+-	int create = amount;
+-	blockwalker bw, lbw;
+-	uint32 bk;
++	blockwalker bw;
++	uint32 nod;
+ 	nod_info *ni;
+ 	inode *inod;
++} inode_pos;
++#define INODE_POS_TRUNCATE 0
++#define INODE_POS_EXTEND 1
++
++// Call this to set up an ipos structure for future use with
++// extend_inode_blk to append blocks to the given inode.  If
++// op is INODE_POS_TRUNCATE, the inode is truncated to zero size.
++// If op is INODE_POS_EXTEND, the position is moved to the end
++// of the inode's data blocks.
++// Call inode_pos_finish when done with the inode_pos structure.
++static void
++inode_pos_init(filesystem *fs, inode_pos *ipos, uint32 nod, int op,
++	       blockwalker *endbw)
++{
++	blockwalker lbw;
+ 
+-	inod = get_nod(fs, nod, &ni);
+-	init_bw(&bw);
+-	if(amount < 0)
+-	{
+-		uint32 i;
+-		for(i = 0; i < inod->i_blocks / INOBLK + amount; i++)
+-			walk_bw(fs, nod, &bw, 0, 0);
+-		while(walk_bw(fs, nod, &bw, &create, 0) != WALK_END)
++	init_bw(&ipos->bw);
++	ipos->nod = nod;
++	ipos->inod = get_nod(fs, nod, &ipos->ni);
++	if (op == INODE_POS_TRUNCATE) {
++		int32 create = -1;
++		while(walk_bw(fs, nod, &ipos->bw, &create, 0) != WALK_END)
+ 			/*nop*/;
+-		inod->i_blocks += amount * INOBLK;
++		ipos->inod->i_blocks = 0;
+ 	}
+-	else
++
++	if (endbw)
++		ipos->bw = *endbw;
++	else {
++		/* Seek to the end */
++		init_bw(&ipos->bw);
++		lbw = ipos->bw;
++		while(walk_bw(fs, nod, &ipos->bw, 0, 0) != WALK_END)
++			lbw = ipos->bw;
++		ipos->bw = lbw;
++	}
++}
++
++// Clean up the inode_pos structure.
++static void
++inode_pos_finish(filesystem *fs, inode_pos *ipos)
++{
++	put_nod(ipos->ni);
++}
++
++// add blocks to an inode (file/dir/etc...) at the given position.
++// This will only work when appending to the end of an inode.
++static void
++extend_inode_blk(filesystem *fs, inode_pos *ipos, block b, int amount)
++{
++	uint32 bk;
++	uint32 pos;
++
++	if (amount < 0)
++		error_msg_and_die("extend_inode_blk: Got negative amount");
++
++	for (pos = 0; amount; pos += BLOCKSIZE)
+ 	{
+-		lbw = bw;
+-		while((bk = walk_bw(fs, nod, &bw, 0, 0)) != WALK_END)
+-			lbw = bw;
+-		bw = lbw;
+-		while(create)
+-		{
+-			int i, copyb = 0;
+-			if(!(fs->sb->s_reserved[200] & OP_HOLES))
+-				copyb = 1;
+-			else
+-				for(i = 0; i < BLOCKSIZE / 4; i++)
+-					if(((int32*)(b + BLOCKSIZE * (amount - create)))[i])
+-					{
+-						copyb = 1;
+-						break;
+-					}
+-			if((bk = walk_bw(fs, nod, &bw, &create, !copyb)) == WALK_END)
+-				break;
+-			if(copyb) {
+-				blk_info *bi;
+-				memcpy(get_blk(fs, bk, &bi), b + BLOCKSIZE * (amount - create - 1), BLOCKSIZE);
+-				put_blk(bi);
+-			}
++		int hole = ((fs->sb->s_reserved[200] & OP_HOLES) && is_blk_empty(b + pos));
++
++		bk = walk_bw(fs, ipos->nod, &ipos->bw, &amount, hole);
++		if (bk == WALK_END)
++			error_msg_and_die("extend_inode_blk: extend failed");
++		if (!hole) {
++			blk_info *bi;
++			uint8 *block = get_blk(fs, bk, &bi);
++			memcpy(block, b + pos, BLOCKSIZE);
++			put_blk(bi);
+ 		}
+ 	}
+ }
+@@ -1484,6 +1522,7 @@ add2dir(filesystem *fs, uint32 dnod, uint32 nod, const char* name)
+ 	inode *node;
+ 	inode *pnode;
+ 	nod_info *dni, *ni;
++	inode_pos ipos;
+ 
+ 	pnode = get_nod(fs, dnod, &dni);
+ 	if((pnode->i_mode & FM_IFMT) != FM_IFDIR)
+@@ -1534,7 +1573,11 @@ add2dir(filesystem *fs, uint32 dnod, uint32 nod, const char* name)
+ 	node->i_links_count++;
+ 	put_nod(ni);
+ 	next_dir(&dw); // Force the data into the buffer
+-	extend_blk(fs, dnod, dir_data(&dw), 1);
++
++	inode_pos_init(fs, &ipos, dnod, INODE_POS_EXTEND, &lbw);
++	extend_inode_blk(fs, &ipos, dir_data(&dw), 1);
++	inode_pos_finish(fs, &ipos);
++
+ 	put_dir(&dw);
+ 	pnode->i_size += BLOCKSIZE;
+ out:
+@@ -1654,8 +1697,9 @@ mklink_fs(filesystem *fs, uint32 parent_nod, const char *name, size_t size, uint
+ 	uint32 nod = mknod_fs(fs, parent_nod, name, FM_IFLNK | FM_IRWXU | FM_IRWXG | FM_IRWXO, uid, gid, 0, 0, ctime, mtime);
+ 	nod_info *ni;
+ 	inode *node = get_nod(fs, nod, &ni);
++	inode_pos ipos;
+ 
+-	extend_blk(fs, nod, 0, - (int)node->i_blocks / INOBLK);
++	inode_pos_init(fs, &ipos, nod, INODE_POS_TRUNCATE, NULL);
+ 	node->i_size = size;
+ 	if(size <= 4 * (EXT2_TIND_BLOCK+1))
+ 	{
+@@ -1663,7 +1707,8 @@ mklink_fs(filesystem *fs, uint32 parent_nod, const char *name, size_t size, uint
+ 		put_nod(ni);
+ 		return nod;
+ 	}
+-	extend_blk(fs, nod, b, rndup(size, BLOCKSIZE) / BLOCKSIZE);
++	extend_inode_blk(fs, &ipos, b, rndup(size, BLOCKSIZE) / BLOCKSIZE);
++	inode_pos_finish(fs, &ipos);
+ 	put_nod(ni);
+ 	return nod;
+ }
+@@ -1676,8 +1721,9 @@ mkfile_fs(filesystem *fs, uint32 parent_nod, const char *name, uint32 mode, size
+ 	uint32 nod = mknod_fs(fs, parent_nod, name, mode|FM_IFREG, uid, gid, 0, 0, ctime, mtime);
+ 	nod_info *ni;
+ 	inode *node = get_nod(fs, nod, &ni);
++	inode_pos ipos;
+ 
+-	extend_blk(fs, nod, 0, - (int)node->i_blocks / INOBLK);
++	inode_pos_init(fs, &ipos, nod, INODE_POS_TRUNCATE, NULL);
+ 	node->i_size = size;
+ 	if (size) {
+ 		if(!(b = (uint8*)calloc(rndup(size, BLOCKSIZE), 1)))
+@@ -1685,9 +1731,11 @@ mkfile_fs(filesystem *fs, uint32 parent_nod, const char *name, uint32 mode, size
+ 		if(f)
+ 			if (fread(b, size, 1, f) != 1) // FIXME: ugly. use mmap() ...
+ 				error_msg_and_die("fread failed");
+-		extend_blk(fs, nod, b, rndup(size, BLOCKSIZE) / BLOCKSIZE);
++		extend_inode_blk(fs, &ipos, b,
++				 rndup(size, BLOCKSIZE) / BLOCKSIZE);
+ 		free(b);
+ 	}
++	inode_pos_finish(fs, &ipos);
+ 	put_nod(ni);
+ 	return nod;
+ }
+@@ -2210,6 +2258,7 @@ init_fs(int nbblocks, int nbinodes, int nbresrvd, int holes, uint32 fs_timestamp
+ 	inode *itab0;
+ 	blk_info *bi;
+ 	nod_info *ni;
++	inode_pos ipos;
+ 	
+ 	if(nbresrvd < 0)
+ 		error_msg_and_die("reserved blocks value is invalid. Note: options have changed, see --help or the man page.");
+@@ -2337,7 +2386,9 @@ init_fs(int nbblocks, int nbinodes, int nbresrvd, int holes, uint32 fs_timestamp
+ 	new_dir(fs, EXT2_ROOT_INO, ".", 1, &dw);
+ 	shrink_dir(&dw, EXT2_ROOT_INO, "..", 2);
+ 	next_dir(&dw); // Force the data into the buffer
+-	extend_blk(fs, EXT2_ROOT_INO, dir_data(&dw), 1);
++	inode_pos_init(fs, &ipos, EXT2_ROOT_INO, INODE_POS_EXTEND, NULL);
++	extend_inode_blk(fs, &ipos, dir_data(&dw), 1);
++	inode_pos_finish(fs, &ipos);
+ 	put_dir(&dw);
+ 
+ 	// make lost+found directory and reserve blocks
+@@ -2355,8 +2406,10 @@ init_fs(int nbblocks, int nbinodes, int nbresrvd, int holes, uint32 fs_timestamp
+ 		 */
+ 		if (fs->sb->s_r_blocks_count > fs->sb->s_blocks_count * MAX_RESERVED_BLOCKS )
+ 			fs->sb->s_r_blocks_count = fs->sb->s_blocks_count * MAX_RESERVED_BLOCKS;
++		inode_pos_init(fs, &ipos, nod, INODE_POS_EXTEND, NULL);
+ 		for(i = 1; i < fs->sb->s_r_blocks_count; i++)
+-			extend_blk(fs, nod, b, 1);
++			extend_inode_blk(fs, &ipos, b, 1);
++		inode_pos_finish(fs, &ipos);
+ 		free_workblk(b);
+ 		node = get_nod(fs, nod, &ni);
+ 		node->i_size = fs->sb->s_r_blocks_count * BLOCKSIZE;
+-- 
+1.7.4.1
+
diff --git a/meta/recipes-devtools/genext2fs/genext2fs-1.4.1/0007-Move-hdlinks-into-the-filesystem-structure.patch b/meta/recipes-devtools/genext2fs/genext2fs-1.4.1/0007-Move-hdlinks-into-the-filesystem-structure.patch
new file mode 100644
index 0000000..52215c8
--- /dev/null
+++ b/meta/recipes-devtools/genext2fs/genext2fs-1.4.1/0007-Move-hdlinks-into-the-filesystem-structure.patch
@@ -0,0 +1,175 @@ 
+Upstream-Status: inappropriate
+
+From 1ea2332c6cec1fb979a7cb4502360005bed50da4 Mon Sep 17 00:00:00 2001
+From: Corey Minyard <cminyard@mvista.com>
+Date: Sun, 5 Jun 2011 14:08:02 -0500
+Subject: [PATCH 07/19] Move hdlinks into the filesystem structure.
+
+Since the hard links structures are associated with a filesystem, put
+them in the filesystem structure since it can hold other stuff now.
+---
+ genext2fs.c |   71 +++++++++++++++++++++++++++++++---------------------------
+ 1 files changed, 38 insertions(+), 33 deletions(-)
+
+diff --git a/genext2fs.c b/genext2fs.c
+index e45e520..d130362 100644
+--- a/genext2fs.c
++++ b/genext2fs.c
+@@ -583,6 +583,18 @@ typedef struct
+ 	uint32 bptind;
+ } blockwalker;
+ 
++#define HDLINK_CNT   16
++struct hdlink_s
++{
++	uint32	src_inode;
++	uint32	dst_nod;
++};
++
++struct hdlinks_s
++{
++	int32 count;
++	struct hdlink_s *hdl;
++};
+ 
+ /* Filesystem structure that support groups */
+ #if BLOCKSIZE == 1024
+@@ -592,6 +604,8 @@ typedef struct
+ 	superblock *sb;
+ 	groupdescriptor *gd;
+ 	uint32 nheadblocks;
++	int32 hdlink_cnt;
++	struct hdlinks_s hdlinks;
+ } filesystem;
+ #else
+ #error UNHANDLED BLOCKSIZE
+@@ -615,22 +629,6 @@ typedef struct
+ #define udecl32(x) this->x = swab32(this->x);
+ #define utdecl32(x,n) { int i; for(i=0; i<n; i++) this->x[i] = swab32(this->x[i]); }
+ 
+-#define HDLINK_CNT   16
+-static int32 hdlink_cnt = HDLINK_CNT;
+-struct hdlink_s
+-{
+-	uint32	src_inode;
+-	uint32	dst_nod;
+-};
+-
+-struct hdlinks_s 
+-{
+-	int32 count;
+-	struct hdlink_s *hdl;
+-};
+-
+-static struct hdlinks_s hdlinks;
+-
+ static void
+ swap_sb(superblock *sb)
+ {
+@@ -787,12 +785,12 @@ xreadlink(const char *path)
+ }
+ 
+ int
+-is_hardlink(ino_t inode)
++is_hardlink(filesystem *fs, ino_t inode)
+ {
+ 	int i;
+ 
+-	for(i = 0; i < hdlinks.count; i++) {
+-		if(hdlinks.hdl[i].src_inode == inode)
++	for(i = 0; i < fs->hdlinks.count; i++) {
++		if(fs->hdlinks.hdl[i].src_inode == inode)
+ 			return i;
+ 	}
+ 	return -1;
+@@ -1989,9 +1987,9 @@ add2fs_from_dir(filesystem *fs, uint32 this_nod, int squash_uids, int squash_per
+ 			save_nod = 0;
+ 			/* Check for hardlinks */
+ 			if (!S_ISDIR(st.st_mode) && !S_ISLNK(st.st_mode) && st.st_nlink > 1) {
+-				int32 hdlink = is_hardlink(st.st_ino);
++				int32 hdlink = is_hardlink(fs, st.st_ino);
+ 				if (hdlink >= 0) {
+-					add2dir(fs, this_nod, hdlinks.hdl[hdlink].dst_nod, name);
++					add2dir(fs, this_nod, fs->hdlinks.hdl[hdlink].dst_nod, name);
+ 					continue;
+ 				} else {
+ 					save_nod = 1;
+@@ -2035,17 +2033,17 @@ add2fs_from_dir(filesystem *fs, uint32 this_nod, int squash_uids, int squash_per
+ 					error_msg("ignoring entry %s", name);
+ 			}
+ 			if (save_nod) {
+-				if (hdlinks.count == hdlink_cnt) {
+-					if ((hdlinks.hdl = 
+-						 realloc (hdlinks.hdl, (hdlink_cnt + HDLINK_CNT) *
++				if (fs->hdlinks.count == fs->hdlink_cnt) {
++					if ((fs->hdlinks.hdl =
++						 realloc (fs->hdlinks.hdl, (fs->hdlink_cnt + HDLINK_CNT) *
+ 								  sizeof (struct hdlink_s))) == NULL) {
+ 						error_msg_and_die("Not enough memory");
+ 					}
+-					hdlink_cnt += HDLINK_CNT;
++					fs->hdlink_cnt += HDLINK_CNT;
+ 				}
+-				hdlinks.hdl[hdlinks.count].src_inode = st.st_ino;
+-				hdlinks.hdl[hdlinks.count].dst_nod = nod;
+-				hdlinks.count++;
++				fs->hdlinks.hdl[fs->hdlinks.count].src_inode = st.st_ino;
++				fs->hdlinks.hdl[fs->hdlinks.count].dst_nod = nod;
++				fs->hdlinks.count++;
+ 			}
+ 		}
+ 	}
+@@ -2300,6 +2298,11 @@ init_fs(int nbblocks, int nbinodes, int nbresrvd, int holes, uint32 fs_timestamp
+ 			   / BLOCKSIZE);
+ 	if(!(fs->data = calloc(nbblocks, BLOCKSIZE)))
+ 		error_msg_and_die("not enough memory for filesystem");
++	fs->hdlink_cnt = HDLINK_CNT;
++	fs->hdlinks.hdl = calloc(sizeof(struct hdlink_s), fs->hdlink_cnt);
++	if (!fs->hdlinks.hdl)
++		error_msg_and_die("Not enough memory");
++	fs->hdlinks.count = 0 ;
+ 	fs->sb = (superblock *) (fs->data + BLOCKSIZE);
+ 	fs->gd = (groupdescriptor *) (fs->sb + 1);
+ 
+@@ -2442,12 +2445,18 @@ load_fs(FILE * fh, int swapit)
+ 	fs = malloc(sizeof(*fs));
+ 	if (!fs)
+ 		error_msg_and_die("not enough memory for filesystem");
++	fs->hdlink_cnt = HDLINK_CNT;
++	fs->hdlinks.hdl = calloc(sizeof(struct hdlink_s), fs->hdlink_cnt);
++	if (!fs->hdlinks.hdl)
++		error_msg_and_die("Not enough memory");
++	fs->hdlinks.count = 0 ;
+ 	if(!(fs->data = calloc(fssize, BLOCKSIZE)))
+ 		error_msg_and_die("not enough memory for filesystem");
+ 	if(fread(fs->data, BLOCKSIZE, fssize, fh) != fssize)
+ 		perror_msg_and_die("input filesystem image");
+ 	fs->sb = (superblock *) (fs->data + BLOCKSIZE);
+ 	fs->gd = (groupdescriptor *) (fs->sb + 1);
++
+ 	if(swapit)
+ 		swap_badfs(fs);
+ 	if(fs->sb->s_rev_level || (fs->sb->s_magic != EXT2_MAGIC_NUMBER))
+@@ -2461,6 +2470,7 @@ load_fs(FILE * fh, int swapit)
+ static void
+ free_fs(filesystem *fs)
+ {
++	free(fs->hdlinks.hdl);
+ 	free(fs->data);
+ 	free(fs);
+ }
+@@ -2964,11 +2974,6 @@ main(int argc, char **argv)
+ 		error_msg_and_die("Not enough arguments. Try --help or else see the man page.");
+ 	fsout = argv[optind];
+ 
+-	hdlinks.hdl = (struct hdlink_s *)malloc(hdlink_cnt * sizeof(struct hdlink_s));
+-	if (!hdlinks.hdl)
+-		error_msg_and_die("Not enough memory");
+-	hdlinks.count = 0 ;
+-
+ 	if(fsin)
+ 	{
+ 		if(strcmp(fsin, "-"))
+-- 
+1.7.4.1
+
diff --git a/meta/recipes-devtools/genext2fs/genext2fs-1.4.1/0008-Separate-out-the-creation-of-the-filesystem-structur.patch b/meta/recipes-devtools/genext2fs/genext2fs-1.4.1/0008-Separate-out-the-creation-of-the-filesystem-structur.patch
new file mode 100644
index 0000000..25adeb6
--- /dev/null
+++ b/meta/recipes-devtools/genext2fs/genext2fs-1.4.1/0008-Separate-out-the-creation-of-the-filesystem-structur.patch
@@ -0,0 +1,95 @@ 
+Upstream-Status: inappropriate
+
+From 797e8548e5857b7a0586b27a9bdcadbea1561d8d Mon Sep 17 00:00:00 2001
+From: Corey Minyard <cminyard@mvista.com>
+Date: Sun, 5 Jun 2011 14:53:57 -0500
+Subject: [PATCH 08/19] Separate out the creation of the filesystem structure.
+
+Consolidate some processing that occurs when allocating a filesystem
+structure.
+---
+ genext2fs.c |   49 +++++++++++++++++++++++++------------------------
+ 1 files changed, 25 insertions(+), 24 deletions(-)
+
+diff --git a/genext2fs.c b/genext2fs.c
+index d130362..497c9af 100644
+--- a/genext2fs.c
++++ b/genext2fs.c
+@@ -2240,6 +2240,29 @@ swap_badfs(filesystem *fs)
+ 	}
+ }
+ 
++// Allocate a new filesystem structure, allocate internal memory,
++// and initialize the contents.
++static filesystem *
++alloc_fs(uint32 nbblocks)
++{
++	filesystem *fs;
++
++	fs = malloc(sizeof(*fs));
++	if (!fs)
++		error_msg_and_die("not enough memory for filesystem");
++	memset(fs, 0, sizeof(*fs));
++	if(!(fs->data = calloc(nbblocks, BLOCKSIZE)))
++		error_msg_and_die("not enough memory for filesystem");
++	fs->hdlink_cnt = HDLINK_CNT;
++	fs->hdlinks.hdl = calloc(sizeof(struct hdlink_s), fs->hdlink_cnt);
++	if (!fs->hdlinks.hdl)
++		error_msg_and_die("Not enough memory");
++	fs->hdlinks.count = 0 ;
++	fs->sb = (superblock *) (fs->data + BLOCKSIZE);
++	fs->gd = (groupdescriptor *) (fs->sb + 1);
++	return fs;
++}
++
+ // initialize an empty filesystem
+ static filesystem *
+ init_fs(int nbblocks, int nbinodes, int nbresrvd, int holes, uint32 fs_timestamp)
+@@ -2290,21 +2313,10 @@ init_fs(int nbblocks, int nbinodes, int nbresrvd, int holes, uint32 fs_timestamp
+ 	free_blocks = nbblocks - overhead_per_group*nbgroups - 1 /*boot block*/;
+ 	free_blocks_per_group = nbblocks_per_group - overhead_per_group;
+ 
+-	fs = malloc(sizeof(*fs));
+-	if (!fs)
+-		error_msg_and_die("not enough memory for filesystem");
++	fs = alloc_fs(nbblocks);
+ 	fs->nheadblocks = (((nbgroups * sizeof(groupdescriptor))
+ 			    + sizeof(superblock) + (BLOCKSIZE - 1))
+ 			   / BLOCKSIZE);
+-	if(!(fs->data = calloc(nbblocks, BLOCKSIZE)))
+-		error_msg_and_die("not enough memory for filesystem");
+-	fs->hdlink_cnt = HDLINK_CNT;
+-	fs->hdlinks.hdl = calloc(sizeof(struct hdlink_s), fs->hdlink_cnt);
+-	if (!fs->hdlinks.hdl)
+-		error_msg_and_die("Not enough memory");
+-	fs->hdlinks.count = 0 ;
+-	fs->sb = (superblock *) (fs->data + BLOCKSIZE);
+-	fs->gd = (groupdescriptor *) (fs->sb + 1);
+ 
+ 	// create the superblock for an empty filesystem
+ 	fs->sb->s_inodes_count = nbinodes_per_group * nbgroups;
+@@ -2442,20 +2454,9 @@ load_fs(FILE * fh, int swapit)
+ 	fssize = (fssize + BLOCKSIZE - 1) / BLOCKSIZE;
+ 	if(fssize < 16) // totally arbitrary
+ 		error_msg_and_die("too small filesystem");
+-	fs = malloc(sizeof(*fs));
+-	if (!fs)
+-		error_msg_and_die("not enough memory for filesystem");
+-	fs->hdlink_cnt = HDLINK_CNT;
+-	fs->hdlinks.hdl = calloc(sizeof(struct hdlink_s), fs->hdlink_cnt);
+-	if (!fs->hdlinks.hdl)
+-		error_msg_and_die("Not enough memory");
+-	fs->hdlinks.count = 0 ;
+-	if(!(fs->data = calloc(fssize, BLOCKSIZE)))
+-		error_msg_and_die("not enough memory for filesystem");
++	fs = alloc_fs(fssize);
+ 	if(fread(fs->data, BLOCKSIZE, fssize, fh) != fssize)
+ 		perror_msg_and_die("input filesystem image");
+-	fs->sb = (superblock *) (fs->data + BLOCKSIZE);
+-	fs->gd = (groupdescriptor *) (fs->sb + 1);
+ 
+ 	if(swapit)
+ 		swap_badfs(fs);
+-- 
+1.7.4.1
+
diff --git a/meta/recipes-devtools/genext2fs/genext2fs-1.4.1/0009-Move-byte-swapping-into-the-get-put-routines.patch b/meta/recipes-devtools/genext2fs/genext2fs-1.4.1/0009-Move-byte-swapping-into-the-get-put-routines.patch
new file mode 100644
index 0000000..028fbb6
--- /dev/null
+++ b/meta/recipes-devtools/genext2fs/genext2fs-1.4.1/0009-Move-byte-swapping-into-the-get-put-routines.patch
@@ -0,0 +1,421 @@ 
+Upstream-Status: inappropriate
+
+From 46d57a42a2185970807971f4d6d8f62b4facbaf5 Mon Sep 17 00:00:00 2001
+From: Corey Minyard <cminyard@mvista.com>
+Date: Sun, 5 Jun 2011 15:00:15 -0500
+Subject: [PATCH 09/19] Move byte swapping into the get/put routines.
+
+Remove the full byte-swapping of the filesystem at start/end time, and
+instead byteswap each inode/block map/directory as it is read and written.
+This is getting ready for the change of not holding the entire filesystem
+in memory.
+---
+ genext2fs.c |  234 +++++++++++++---------------------------------------------
+ 1 files changed, 53 insertions(+), 181 deletions(-)
+
+diff --git a/genext2fs.c b/genext2fs.c
+index 497c9af..51403a2 100644
+--- a/genext2fs.c
++++ b/genext2fs.c
+@@ -604,6 +604,7 @@ typedef struct
+ 	superblock *sb;
+ 	groupdescriptor *gd;
+ 	uint32 nheadblocks;
++	int swapit;
+ 	int32 hdlink_cnt;
+ 	struct hdlinks_s hdlinks;
+ } filesystem;
+@@ -648,9 +649,24 @@ swap_gd(groupdescriptor *gd)
+ static void
+ swap_nod(inode *nod)
+ {
++	uint32 nblk;
++
+ #define this nod
+ 	inode_decl
+ #undef this
++
++	// block and character inodes store the major and minor in the
++	// i_block, so we need to unswap to get those.  Also, if it's
++	// zero iblocks, put the data back like it belongs.
++	nblk = nod->i_blocks / INOBLK;
++	if ((nod->i_size && !nblk)
++	    || ((nod->i_mode & FM_IFBLK) == FM_IFBLK)
++	    || ((nod->i_mode & FM_IFCHR) == FM_IFCHR))
++	{
++		int i;
++		for(i = 0; i <= EXT2_TIND_BLOCK; i++)
++			nod->i_block[i] = swab32(nod->i_block[i]);
++	}
+ }
+ 
+ static void
+@@ -852,6 +868,8 @@ put_blk(blk_info *bi)
+ // owned by the user.
+ typedef struct
+ {
++	filesystem *fs;
++	uint8 *b;
+ 	blk_info *bi;
+ } blkmap_info;
+ 
+@@ -861,19 +879,23 @@ static inline uint32 *
+ get_blkmap(filesystem *fs, uint32 blk, blkmap_info **rbmi)
+ {
+ 	blkmap_info *bmi;
+-	uint8 *b;
+ 
+ 	bmi = malloc(sizeof(*bmi));
+ 	if (!bmi)
+ 		error_msg_and_die("get_blkmap: out of memory");
+-	b = get_blk(fs, blk, &bmi->bi);
++	bmi->fs = fs;
++	bmi->b = get_blk(fs, blk, &bmi->bi);
++	if (bmi->fs->swapit)
++		swap_block(bmi->b);
+ 	*rbmi = bmi;
+-	return (uint32 *) b;
++	return (uint32 *) bmi->b;
+ }
+ 
+ static inline void
+ put_blkmap(blkmap_info *bmi)
+ {
++	if (bmi->fs->swapit)
++		swap_block(bmi->b);
+ 	put_blk(bmi->bi);
+ 	free(bmi);
+ }
+@@ -882,7 +904,9 @@ put_blkmap(blkmap_info *bmi)
+ // by the user.
+ typedef struct
+ {
++	filesystem *fs;
+ 	blk_info *bi;
++	inode *itab;
+ } nod_info;
+ 
+ // Return a given inode from a filesystem.  Make sure to call put_nod()
+@@ -891,8 +915,8 @@ static inline inode *
+ get_nod(filesystem *fs, uint32 nod, nod_info **rni)
+ {
+ 	int grp, offset, boffset;
+-	inode *itab;
+ 	nod_info *ni;
++	uint8 *b;
+ 
+ 	offset = GRP_IBM_OFFSET(fs,nod) - 1;
+ 	boffset = offset / (BLOCKSIZE / sizeof(inode));
+@@ -901,14 +925,20 @@ get_nod(filesystem *fs, uint32 nod, nod_info **rni)
+ 	ni = malloc(sizeof(*ni));
+ 	if (!ni)
+ 		error_msg_and_die("get_nod: out of memory");
+-	itab = (inode *)get_blk(fs, fs->gd[grp].bg_inode_table + boffset, &ni->bi);
++	ni->fs = fs;
++	b = get_blk(fs, fs->gd[grp].bg_inode_table + boffset, &ni->bi);
++	ni->itab = ((inode *) b) + offset;
++	if (fs->swapit)
++		swap_nod(ni->itab);
+ 	*rni = ni;
+-	return itab+offset;
++	return ni->itab;
+ }
+ 
+ static inline void
+ put_nod(nod_info *ni)
+ {
++	if (ni->fs->swapit)
++		swap_nod(ni->itab);
+ 	put_blk(ni->bi);
+ 	free(ni);
+ }
+@@ -936,6 +966,8 @@ get_dir(filesystem *fs, uint32 nod, dirwalker *dw)
+ 	dw->last_d = (directory *) dw->b;
+ 
+ 	memcpy(&dw->d, dw->last_d, sizeof(directory));
++	if (fs->swapit)
++		swap_dir(&dw->d);
+ 	return &dw->d;
+ }
+ 
+@@ -945,6 +977,8 @@ next_dir(dirwalker *dw)
+ {
+ 	directory *next_d = (directory *)((int8*)dw->last_d + dw->d.d_rec_len);
+ 
++	if (dw->fs->swapit)
++		swap_dir(&dw->d);
+ 	memcpy(dw->last_d, &dw->d, sizeof(directory));
+ 
+ 	if (((int8 *) next_d) >= ((int8 *) dw->b + BLOCKSIZE))
+@@ -952,6 +986,8 @@ next_dir(dirwalker *dw)
+ 
+ 	dw->last_d = next_d;
+ 	memcpy(&dw->d, next_d, sizeof(directory));
++	if (dw->fs->swapit)
++		swap_dir(&dw->d);
+ 	return &dw->d;
+ }
+ 
+@@ -959,6 +995,8 @@ next_dir(dirwalker *dw)
+ static inline void
+ put_dir(dirwalker *dw)
+ {
++	if (dw->fs->swapit)
++		swap_dir(&dw->d);
+ 	memcpy(dw->last_d, &dw->d, sizeof(directory));
+ 
+ 	if (dw->nod == 0)
+@@ -998,6 +1036,8 @@ shrink_dir(dirwalker *dw, uint32 nod, const char *name, int nlen)
+ 	d->d_rec_len = sizeof(directory) + rndup(d->d_name_len, 4);
+ 	preclen = d->d_rec_len;
+ 	reclen -= preclen;
++	if (dw->fs->swapit)
++		swap_dir(&dw->d);
+ 	memcpy(dw->last_d, &dw->d, sizeof(directory));
+ 
+ 	dw->last_d = (directory *) (((int8 *) dw->last_d) + preclen);
+@@ -2050,159 +2090,12 @@ add2fs_from_dir(filesystem *fs, uint32 this_nod, int squash_uids, int squash_per
+ 	closedir(dh);
+ }
+ 
+-// endianness swap of x-indirect blocks
+-static void
+-swap_goodblocks(filesystem *fs, inode *nod)
+-{
+-	uint32 i,j;
+-	int done=0;
+-	uint32 *b,*b2;
+-	blk_info *bi, *bi2, *bi3;
+-
+-	uint32 nblk = nod->i_blocks / INOBLK;
+-	if((nod->i_size && !nblk) || ((nod->i_mode & FM_IFBLK) == FM_IFBLK) || ((nod->i_mode & FM_IFCHR) == FM_IFCHR))
+-		for(i = 0; i <= EXT2_TIND_BLOCK; i++)
+-			nod->i_block[i] = swab32(nod->i_block[i]);
+-	if(nblk <= EXT2_IND_BLOCK)
+-		return;
+-	swap_block(get_blk(fs, nod->i_block[EXT2_IND_BLOCK], &bi));
+-	put_blk(bi);
+-	if(nblk <= EXT2_DIND_BLOCK + BLOCKSIZE/4)
+-		return;
+-	/* Currently this will fail b'cos the number of blocks as stored
+-	   in i_blocks also includes the indirection blocks (see
+-	   walk_bw). But this function assumes that i_blocks only
+-	   stores the count of data blocks ( Actually according to
+-	   "Understanding the Linux Kernel" (Table 17-3 p502 1st Ed)
+-	   i_blocks IS supposed to store the count of data blocks). so
+-	   with a file of size 268K nblk would be 269.The above check
+-	   will be false even though double indirection hasn't been
+-	   started.This is benign as 0 means block 0 which has been
+-	   zeroed out and therefore points back to itself from any offset
+-	 */
+-	// FIXME: I have fixed that, but I have the feeling the rest of
+-	// ths function needs to be fixed for the same reasons - Xav
+-	assert(nod->i_block[EXT2_DIND_BLOCK] != 0);
+-	for(i = 0; i < BLOCKSIZE/4; i++)
+-		if(nblk > EXT2_IND_BLOCK + BLOCKSIZE/4 + (BLOCKSIZE/4)*i ) {
+-			swap_block(get_blk(fs, ((uint32*)get_blk(fs, nod->i_block[EXT2_DIND_BLOCK], &bi))[i], &bi2));
+-			put_blk(bi);
+-			put_blk(bi2);
+-		}
+-	swap_block(get_blk(fs, nod->i_block[EXT2_DIND_BLOCK], &bi));
+-	put_blk(bi);
+-	if(nblk <= EXT2_IND_BLOCK + BLOCKSIZE/4 + BLOCKSIZE/4 * BLOCKSIZE/4)
+-		return;
+-	/* Adding support for triple indirection */
+-	b = (uint32*)get_blk(fs,nod->i_block[EXT2_TIND_BLOCK], &bi);
+-	for(i=0;i < BLOCKSIZE/4 && !done ; i++) {
+-		b2 = (uint32*)get_blk(fs,b[i], &bi2);
+-		for(j=0; j<BLOCKSIZE/4;j++) {
+-			if (nblk > ( EXT2_IND_BLOCK + BLOCKSIZE/4 + 
+-				     (BLOCKSIZE/4)*(BLOCKSIZE/4) + 
+-				     i*(BLOCKSIZE/4)*(BLOCKSIZE/4) + 
+-				     j*(BLOCKSIZE/4)) )  {
+-				swap_block(get_blk(fs,b2[j],&bi3));
+-				put_blk(bi3);
+-			}
+-			else {
+-			  done = 1;
+-			  break;
+-			}
+-		}
+-		swap_block((uint8 *)b2);
+-		put_blk(bi2);
+-	}
+-	swap_block((uint8 *)b);
+-	put_blk(bi);
+-	return;
+-}
+-
+-static void
+-swap_badblocks(filesystem *fs, inode *nod)
+-{
+-	uint32 i,j;
+-	int done=0;
+-	uint32 *b,*b2;
+-	blk_info *bi, *bi2, *bi3;
+-
+-	uint32 nblk = nod->i_blocks / INOBLK;
+-	if((nod->i_size && !nblk) || ((nod->i_mode & FM_IFBLK) == FM_IFBLK) || ((nod->i_mode & FM_IFCHR) == FM_IFCHR))
+-		for(i = 0; i <= EXT2_TIND_BLOCK; i++)
+-			nod->i_block[i] = swab32(nod->i_block[i]);
+-	if(nblk <= EXT2_IND_BLOCK)
+-		return;
+-	swap_block(get_blk(fs, nod->i_block[EXT2_IND_BLOCK], &bi));
+-	put_blk(bi);
+-	if(nblk <= EXT2_DIND_BLOCK + BLOCKSIZE/4)
+-		return;
+-	/* See comment in swap_goodblocks */
+-	assert(nod->i_block[EXT2_DIND_BLOCK] != 0);
+-	swap_block(get_blk(fs, nod->i_block[EXT2_DIND_BLOCK], &bi));
+-	put_blk(bi);
+-	for(i = 0; i < BLOCKSIZE/4; i++)
+-		if(nblk > EXT2_IND_BLOCK + BLOCKSIZE/4 + (BLOCKSIZE/4)*i ) {
+-			swap_block(get_blk(fs, ((uint32*)get_blk(fs, nod->i_block[EXT2_DIND_BLOCK],&bi))[i], &bi2));
+-			put_blk(bi);
+-			put_blk(bi2);
+-		}
+-	if(nblk <= EXT2_IND_BLOCK + BLOCKSIZE/4 + BLOCKSIZE/4 * BLOCKSIZE/4)
+-		return;
+-	/* Adding support for triple indirection */
+-	b = (uint32*)get_blk(fs,nod->i_block[EXT2_TIND_BLOCK],&bi);
+-	swap_block((uint8 *)b);
+-	for(i=0;i < BLOCKSIZE/4 && !done ; i++) {
+-		b2 = (uint32*)get_blk(fs,b[i],&bi2);
+-		swap_block((uint8 *)b2);
+-		for(j=0; j<BLOCKSIZE/4;j++) {
+-			if (nblk > ( EXT2_IND_BLOCK + BLOCKSIZE/4 + 
+-				     (BLOCKSIZE/4)*(BLOCKSIZE/4) + 
+-				     i*(BLOCKSIZE/4)*(BLOCKSIZE/4) + 
+-				     j*(BLOCKSIZE/4)) ) {
+-				swap_block(get_blk(fs,b2[j],&bi3));
+-				put_blk(bi3);
+-			}
+-			else {
+-			  done = 1;
+-			  break;
+-			}
+-		}
+-		put_blk(bi2);
+-	}
+-	put_blk(bi);
+-	return;
+-}
+-
+ // endianness swap of the whole filesystem
+ static void
+ swap_goodfs(filesystem *fs)
+ {
+ 	uint32 i;
+-	nod_info *ni;
+ 
+-	for(i = 1; i < fs->sb->s_inodes_count; i++)
+-	{
+-		inode *nod = get_nod(fs, i, &ni);
+-		if(nod->i_mode & FM_IFDIR)
+-		{
+-			blockwalker bw;
+-			uint32 bk;
+-			init_bw(&bw);
+-			while((bk = walk_bw(fs, i, &bw, 0, 0)) != WALK_END)
+-			{
+-				directory *d;
+-				uint8 *b;
+-				blk_info *bi;
+-				b = get_blk(fs, bk, &bi);
+-				for(d = (directory*)b; (int8*)d + sizeof(*d) < (int8*)b + BLOCKSIZE; d = (directory*)((int8*)d + swab16(d->d_rec_len)))
+-					swap_dir(d);
+-				put_blk(bi);
+-			}
+-		}
+-		swap_goodblocks(fs, nod);
+-		swap_nod(nod);
+-		put_nod(ni);
+-	}
+ 	for(i=0;i<GRP_NBGROUPS(fs);i++)
+ 		swap_gd(&(fs->gd[i]));
+ 	swap_sb(fs->sb);
+@@ -2215,35 +2108,12 @@ swap_badfs(filesystem *fs)
+ 	swap_sb(fs->sb);
+ 	for(i=0;i<GRP_NBGROUPS(fs);i++)
+ 		swap_gd(&(fs->gd[i]));
+-	for(i = 1; i < fs->sb->s_inodes_count; i++)
+-	{
+-		nod_info *ni;
+-		inode *nod = get_nod(fs, i, &ni);
+-		swap_nod(nod);
+-		swap_badblocks(fs, nod);
+-		if(nod->i_mode & FM_IFDIR)
+-		{
+-			blockwalker bw;
+-			uint32 bk;
+-			init_bw(&bw);
+-			while((bk = walk_bw(fs, i, &bw, 0, 0)) != WALK_END)
+-			{
+-				directory *d;
+-				uint8 *b;
+-				blk_info *bi;
+-				b = get_blk(fs, bk, &bi);
+-				for(d = (directory*)b; (int8*)d + sizeof(*d) < (int8*)b + BLOCKSIZE; d = (directory*)((int8*)d + d->d_rec_len))
+-					swap_dir(d);
+-				put_blk(bi);
+-			}
+-		}
+-	}
+ }
+ 
+ // Allocate a new filesystem structure, allocate internal memory,
+ // and initialize the contents.
+ static filesystem *
+-alloc_fs(uint32 nbblocks)
++alloc_fs(uint32 nbblocks, int swapit)
+ {
+ 	filesystem *fs;
+ 
+@@ -2251,6 +2121,7 @@ alloc_fs(uint32 nbblocks)
+ 	if (!fs)
+ 		error_msg_and_die("not enough memory for filesystem");
+ 	memset(fs, 0, sizeof(*fs));
++	fs->swapit = swapit;
+ 	if(!(fs->data = calloc(nbblocks, BLOCKSIZE)))
+ 		error_msg_and_die("not enough memory for filesystem");
+ 	fs->hdlink_cnt = HDLINK_CNT;
+@@ -2265,7 +2136,7 @@ alloc_fs(uint32 nbblocks)
+ 
+ // initialize an empty filesystem
+ static filesystem *
+-init_fs(int nbblocks, int nbinodes, int nbresrvd, int holes, uint32 fs_timestamp)
++init_fs(int nbblocks, int nbinodes, int nbresrvd, int holes, uint32 fs_timestamp, int swapit)
+ {
+ 	uint32 i;
+ 	filesystem *fs;
+@@ -2313,7 +2184,7 @@ init_fs(int nbblocks, int nbinodes, int nbresrvd, int holes, uint32 fs_timestamp
+ 	free_blocks = nbblocks - overhead_per_group*nbgroups - 1 /*boot block*/;
+ 	free_blocks_per_group = nbblocks_per_group - overhead_per_group;
+ 
+-	fs = alloc_fs(nbblocks);
++	fs = alloc_fs(nbblocks, swapit);
+ 	fs->nheadblocks = (((nbgroups * sizeof(groupdescriptor))
+ 			    + sizeof(superblock) + (BLOCKSIZE - 1))
+ 			   / BLOCKSIZE);
+@@ -2454,7 +2325,7 @@ load_fs(FILE * fh, int swapit)
+ 	fssize = (fssize + BLOCKSIZE - 1) / BLOCKSIZE;
+ 	if(fssize < 16) // totally arbitrary
+ 		error_msg_and_die("too small filesystem");
+-	fs = alloc_fs(fssize);
++	fs = alloc_fs(fssize, swapit);
+ 	if(fread(fs->data, BLOCKSIZE, fssize, fh) != fssize)
+ 		perror_msg_and_die("input filesystem image");
+ 
+@@ -3014,7 +2885,8 @@ main(int argc, char **argv)
+ 		}
+ 		if(fs_timestamp == -1)
+ 			fs_timestamp = time(NULL);
+-		fs = init_fs(nbblocks, nbinodes, nbresrvd, holes, fs_timestamp);
++		fs = init_fs(nbblocks, nbinodes, nbresrvd, holes, fs_timestamp,
++			     bigendian);
+ 	}
+ 	
+ 	populate_fs(fs, dopt, didx, squash_uids, squash_perms, fs_timestamp, NULL);
+-- 
+1.7.4.1
+
diff --git a/meta/recipes-devtools/genext2fs/genext2fs-1.4.1/0010-Convert-over-to-keeping-the-filesystem-on-disk.patch b/meta/recipes-devtools/genext2fs/genext2fs-1.4.1/0010-Convert-over-to-keeping-the-filesystem-on-disk.patch
new file mode 100644
index 0000000..79e82c8
--- /dev/null
+++ b/meta/recipes-devtools/genext2fs/genext2fs-1.4.1/0010-Convert-over-to-keeping-the-filesystem-on-disk.patch
@@ -0,0 +1,839 @@ 
+Upstream-Status: inappropriate
+
+From 29a36b0b91ee009ee4219934c7a70278b1361834 Mon Sep 17 00:00:00 2001
+From: Corey Minyard <cminyard@mvista.com>
+Date: Sun, 5 Jun 2011 15:24:57 -0500
+Subject: [PATCH 10/19] Convert over to keeping the filesystem on disk
+
+This makes the actual filesystem be on disk and not in memory.  It
+adds caching of the filesystem data to help keep oft-accessed blocks
+in memory and byteswapped.
+---
+ cache.h     |  128 ++++++++++++++++++++
+ genext2fs.c |  377 +++++++++++++++++++++++++++++++++++++++++++++++++----------
+ list.h      |   78 ++++++++++++
+ 3 files changed, 521 insertions(+), 62 deletions(-)
+ create mode 100644 cache.h
+ create mode 100644 list.h
+
+diff --git a/cache.h b/cache.h
+new file mode 100644
+index 0000000..5275be6
+--- /dev/null
++++ b/cache.h
+@@ -0,0 +1,128 @@
++#ifndef __CACHE_H__
++#define __CACHE_H__
++
++#include "list.h"
++
++#define CACHE_LISTS 256
++
++typedef struct
++{
++	list_elem link;
++	list_elem lru_link;
++} cache_link;
++
++typedef struct
++{
++	/* LRU list holds unused items */
++	unsigned int lru_entries;
++	list_elem lru_list;
++	unsigned int max_free_entries;
++
++	unsigned int entries;
++	list_elem lists[CACHE_LISTS];
++	unsigned int (*elem_val)(cache_link *elem);
++	void (*freed)(cache_link *elem);
++} listcache;
++
++static inline void
++cache_add(listcache *c, cache_link *elem)
++{
++	unsigned int hash = c->elem_val(elem) % CACHE_LISTS;
++	int delcount = c->lru_entries - c->max_free_entries;
++
++	if (delcount > 0) {
++		/* Delete some unused items. */
++		list_elem *lru, *next;
++		cache_link *l;
++		list_for_each_elem_safe(&c->lru_list, lru, next) {
++			l = container_of(lru, cache_link, lru_link);
++			list_del(lru);
++			list_del(&l->link);
++			c->entries--;
++			c->lru_entries--;
++			c->freed(l);
++			delcount--;
++			if (delcount <= 0)
++				break;
++		}
++	}
++
++	c->entries++;
++	list_item_init(&elem->lru_link); /* Mark it not in the LRU list */
++	list_add_after(&c->lists[hash], &elem->link);
++}
++
++static inline void
++cache_item_set_unused(listcache *c, cache_link *elem)
++{
++	list_add_before(&c->lru_list, &elem->lru_link);
++	c->lru_entries++;
++}
++
++static inline cache_link *
++cache_find(listcache *c, unsigned int val)
++{
++	unsigned int hash = val % CACHE_LISTS;
++	list_elem *elem;
++
++	list_for_each_elem(&c->lists[hash], elem) {
++		cache_link *l = container_of(elem, cache_link, link);
++		if (c->elem_val(l) == val) {
++			if (!list_empty(&l->lru_link)) {
++				/* It's in the unused list, remove it. */
++				list_del(&l->lru_link);
++				list_item_init(&l->lru_link);
++				c->lru_entries--;
++			}
++			return l;
++		}
++	}
++	return NULL;
++}
++
++static inline int
++cache_flush(listcache *c)
++{
++	list_elem *elem, *next;
++	cache_link *l;
++	int i;
++
++	list_for_each_elem_safe(&c->lru_list, elem, next) {
++		l = container_of(elem, cache_link, lru_link);
++		list_del(elem);
++		list_del(&l->link);
++		c->entries--;
++		c->lru_entries--;
++		c->freed(l);
++	}
++
++	for (i = 0; i < CACHE_LISTS; i++) {
++		list_for_each_elem_safe(&c->lists[i], elem, next) {
++			l = container_of(elem, cache_link, link);
++			list_del(&l->link);
++			c->entries--;
++			c->freed(l);
++		}
++	}
++
++	return c->entries || c->lru_entries;
++}
++
++static inline void
++cache_init(listcache *c, unsigned int max_free_entries,
++	   unsigned int (*elem_val)(cache_link *elem),
++	   void (*freed)(cache_link *elem))
++{
++	int i;
++
++	c->entries = 0;
++	c->lru_entries = 0;
++	c->max_free_entries = max_free_entries;
++	list_init(&c->lru_list);
++	for (i = 0; i < CACHE_LISTS; i++)
++		list_init(&c->lists[i]);
++	c->elem_val = elem_val;
++	c->freed = freed;
++}
++
++#endif /* __CACHE_H__ */
+diff --git a/genext2fs.c b/genext2fs.c
+index 51403a2..f79438d 100644
+--- a/genext2fs.c
++++ b/genext2fs.c
+@@ -142,6 +142,8 @@
+ # include <limits.h>
+ #endif
+ 
++#include "cache.h"
++
+ struct stats {
+ 	unsigned long nblocks;
+ 	unsigned long ninodes;
+@@ -600,6 +602,7 @@ struct hdlinks_s
+ #if BLOCKSIZE == 1024
+ typedef struct
+ {
++	FILE *f;
+ 	uint8 *data;
+ 	superblock *sb;
+ 	groupdescriptor *gd;
+@@ -607,6 +610,10 @@ typedef struct
+ 	int swapit;
+ 	int32 hdlink_cnt;
+ 	struct hdlinks_s hdlinks;
++
++	listcache blks;
++	listcache inodes;
++	listcache blkmaps;
+ } filesystem;
+ #else
+ #error UNHANDLED BLOCKSIZE
+@@ -848,45 +855,150 @@ allocated(block b, uint32 item)
+ // by the user.
+ typedef struct
+ {
+-	int dummy;
++	cache_link link;
++
++	filesystem *fs;
++	uint32 blk;
++	uint8 *b;
++	uint32 usecount;
+ } blk_info;
+ 
++#define MAX_FREE_CACHE_BLOCKS 100
++
++static uint32
++blk_elem_val(cache_link *elem)
++{
++	blk_info *bi = container_of(elem, blk_info, link);
++	return bi->blk;
++}
++
++static void
++blk_freed(cache_link *elem)
++{
++	blk_info *bi = container_of(elem, blk_info, link);
++
++	if (fseeko(bi->fs->f, ((off_t) bi->blk) * BLOCKSIZE, SEEK_SET))
++		perror_msg_and_die("fseek");
++	if (fwrite(bi->b, BLOCKSIZE, 1, bi->fs->f) != 1)
++		perror_msg_and_die("get_blk: write");
++	free(bi->b);
++	free(bi);
++}
++
+ // Return a given block from a filesystem.  Make sure to call
+ // put_blk when you are done with it.
+ static inline uint8 *
+ get_blk(filesystem *fs, uint32 blk, blk_info **rbi)
+ {
+-	return fs->data + blk*BLOCKSIZE;
++	cache_link *curr;
++	blk_info *bi;
++
++	if (blk < fs->nheadblocks)
++		error_msg_and_die("Internal error, request for head block");
++	if (blk >= fs->sb->s_blocks_count)
++		error_msg_and_die("Internal error, block out of range");
++
++	curr = cache_find(&fs->blks, blk);
++	if (curr) {
++		bi = container_of(curr, blk_info, link);
++		bi->usecount++;
++		goto out;
++	}
++
++	bi = malloc(sizeof(*bi));
++	if (!bi)
++		error_msg_and_die("get_blk: out of memory");
++	bi->fs = fs;
++	bi->blk = blk;
++	bi->usecount = 1;
++	bi->b = malloc(BLOCKSIZE);
++	if (!bi->b)
++		error_msg_and_die("get_blk: out of memory");
++	cache_add(&fs->blks, &bi->link);
++	if (fseeko(fs->f, ((off_t) blk) * BLOCKSIZE, SEEK_SET))
++		perror_msg_and_die("fseek");
++	if (fread(bi->b, BLOCKSIZE, 1, fs->f) != 1) {
++		if (ferror(fs->f))
++			perror_msg_and_die("fread");
++		memset(bi->b, 0, BLOCKSIZE);
++	}
++
++out:
++	*rbi = bi;
++	return bi->b;
+ }
+ 
+ static inline void
+ put_blk(blk_info *bi)
+ {
++	if (bi->usecount == 0)
++		error_msg_and_die("Internal error: put_blk usecount zero");
++	bi->usecount--;
++	if (bi->usecount == 0)
++		/* Free happens in the cache code */
++		cache_item_set_unused(&bi->fs->blks, &bi->link);
+ }
+ 
+ // Used by get_blkmap/put_blkmap to hold information about an block map
+ // owned by the user.
+ typedef struct
+ {
++	cache_link link;
++
+ 	filesystem *fs;
++	uint32 blk;
+ 	uint8 *b;
+ 	blk_info *bi;
++	uint32 usecount;
+ } blkmap_info;
+ 
++#define MAX_FREE_CACHE_BLOCKMAPS 100
++
++static uint32
++blkmap_elem_val(cache_link *elem)
++{
++	blkmap_info *bmi = container_of(elem, blkmap_info, link);
++	return bmi->blk;
++}
++
++static void
++blkmap_freed(cache_link *elem)
++{
++	blkmap_info *bmi = container_of(elem, blkmap_info, link);
++
++	if (bmi->fs->swapit)
++		swap_block(bmi->b);
++	put_blk(bmi->bi);
++	free(bmi);
++}
++
+ // Return a given block map from a filesystem.  Make sure to call
+ // put_blkmap when you are done with it.
+ static inline uint32 *
+ get_blkmap(filesystem *fs, uint32 blk, blkmap_info **rbmi)
+ {
+ 	blkmap_info *bmi;
++	cache_link *curr;
++
++	curr = cache_find(&fs->blkmaps, blk);
++	if (curr) {
++		bmi = container_of(curr, blkmap_info, link);
++		bmi->usecount++;
++		goto out;
++	}
+ 
+ 	bmi = malloc(sizeof(*bmi));
+ 	if (!bmi)
+ 		error_msg_and_die("get_blkmap: out of memory");
+ 	bmi->fs = fs;
++	bmi->blk = blk;
+ 	bmi->b = get_blk(fs, blk, &bmi->bi);
+-	if (bmi->fs->swapit)
++	bmi->usecount = 1;
++	cache_add(&fs->blkmaps, &bmi->link);
++
++	if (fs->swapit)
+ 		swap_block(bmi->b);
++out:
+ 	*rbmi = bmi;
+ 	return (uint32 *) bmi->b;
+ }
+@@ -894,42 +1006,83 @@ get_blkmap(filesystem *fs, uint32 blk, blkmap_info **rbmi)
+ static inline void
+ put_blkmap(blkmap_info *bmi)
+ {
+-	if (bmi->fs->swapit)
+-		swap_block(bmi->b);
+-	put_blk(bmi->bi);
+-	free(bmi);
++	if (bmi->usecount == 0)
++		error_msg_and_die("Internal error: put_blkmap usecount zero");
++
++	bmi->usecount--;
++	if (bmi->usecount == 0)
++		/* Free happens in the cache code */
++		cache_item_set_unused(&bmi->fs->blkmaps, &bmi->link);
+ }
+ 
+ // Used by get_nod/put_nod to hold information about an inode owned
+ // by the user.
+ typedef struct
+ {
++	cache_link link;
++
+ 	filesystem *fs;
++	uint32 nod;
++	uint8 *b;
+ 	blk_info *bi;
+ 	inode *itab;
++	uint32 usecount;
+ } nod_info;
+ 
++#define MAX_FREE_CACHE_INODES 100
++
++static uint32
++inode_elem_val(cache_link *elem)
++{
++	nod_info *ni = container_of(elem, nod_info, link);
++	return ni->nod;
++}
++
++static void
++inode_freed(cache_link *elem)
++{
++	nod_info *ni = container_of(elem, nod_info, link);
++
++	if (ni->fs->swapit)
++		swap_nod(ni->itab);
++	put_blk(ni->bi);
++	free(ni);
++}
++
+ // Return a given inode from a filesystem.  Make sure to call put_nod()
+ // when you are done with the inode.
+ static inline inode *
+ get_nod(filesystem *fs, uint32 nod, nod_info **rni)
+ {
+ 	int grp, offset, boffset;
++	cache_link *curr;
+ 	nod_info *ni;
+-	uint8 *b;
+ 
+-	offset = GRP_IBM_OFFSET(fs,nod) - 1;
+-	boffset = offset / (BLOCKSIZE / sizeof(inode));
+-	offset %= BLOCKSIZE / sizeof(inode);
+-	grp = GRP_GROUP_OF_INODE(fs,nod);
++	curr = cache_find(&fs->inodes, nod);
++	if (curr) {
++		ni = container_of(curr, nod_info, link);
++		ni->usecount++;
++		goto out;
++	}
++
+ 	ni = malloc(sizeof(*ni));
+ 	if (!ni)
+ 		error_msg_and_die("get_nod: out of memory");
+ 	ni->fs = fs;
+-	b = get_blk(fs, fs->gd[grp].bg_inode_table + boffset, &ni->bi);
+-	ni->itab = ((inode *) b) + offset;
++	ni->nod = nod;
++	ni->usecount = 1;
++	cache_add(&fs->inodes, &ni->link);
++
++	offset = GRP_IBM_OFFSET(fs, nod) - 1;
++	boffset = offset / (BLOCKSIZE / sizeof(inode));
++	offset %= BLOCKSIZE / sizeof(inode);
++	grp = GRP_GROUP_OF_INODE(fs,nod);
++	ni->b = get_blk(fs, fs->gd[grp].bg_inode_table + boffset, &ni->bi);
++	ni->itab = ((inode *) ni->b) + offset;
+ 	if (fs->swapit)
+ 		swap_nod(ni->itab);
++
++out:
+ 	*rni = ni;
+ 	return ni->itab;
+ }
+@@ -937,10 +1090,13 @@ get_nod(filesystem *fs, uint32 nod, nod_info **rni)
+ static inline void
+ put_nod(nod_info *ni)
+ {
+-	if (ni->fs->swapit)
+-		swap_nod(ni->itab);
+-	put_blk(ni->bi);
+-	free(ni);
++	if (ni->usecount == 0)
++		error_msg_and_die("Internal error: put_nod usecount zero");
++
++	ni->usecount--;
++	if (ni->usecount == 0)
++		/* Free happens in the cache code */
++		cache_item_set_unused(&ni->fs->inodes, &ni->link);
+ }
+ 
+ // Used to hold state information while walking a directory inode.
+@@ -2090,40 +2246,61 @@ add2fs_from_dir(filesystem *fs, uint32 this_nod, int squash_uids, int squash_per
+ 	closedir(dh);
+ }
+ 
+-// endianness swap of the whole filesystem
+ static void
+-swap_goodfs(filesystem *fs)
++swap_gds(filesystem *fs)
+ {
+ 	uint32 i;
+-
+ 	for(i=0;i<GRP_NBGROUPS(fs);i++)
+ 		swap_gd(&(fs->gd[i]));
+-	swap_sb(fs->sb);
+ }
+ 
++// Copy size blocks from src to dst, putting holes in the output
++// file (if possible) if the input block is all zeros.
+ static void
+-swap_badfs(filesystem *fs)
++copy_file(filesystem *fs, FILE *dst, FILE *src, size_t size)
+ {
+-	uint32 i;
+-	swap_sb(fs->sb);
+-	for(i=0;i<GRP_NBGROUPS(fs);i++)
+-		swap_gd(&(fs->gd[i]));
++	uint8 *b;
++
++	b = malloc(BLOCKSIZE);
++	if (!b)
++		error_msg_and_die("copy_file: out of memory");
++	if (fseek(src, 0, SEEK_SET))
++		perror_msg_and_die("fseek");
++	if (ftruncate(fileno(dst), 0))
++		perror_msg_and_die("copy_file: ftruncate");
++	while (size > 0) {
++		if (fread(b, BLOCKSIZE, 1, src) != 1)
++			perror_msg_and_die("copy failed on read");
++		if ((dst != stdout) && is_blk_empty(b)) {
++			/* Empty block, just skip it */
++			if (fseek(dst, BLOCKSIZE, SEEK_CUR))
++				perror_msg_and_die("fseek");
++		} else {
++			if (fwrite(b, BLOCKSIZE, 1, dst) != 1)
++				perror_msg_and_die("copy failed on write");
++		}
++		size --;
++	}
+ }
+ 
+ // Allocate a new filesystem structure, allocate internal memory,
+ // and initialize the contents.
+ static filesystem *
+-alloc_fs(uint32 nbblocks, int swapit)
++alloc_fs(int swapit, char *fname, uint32 nbblocks, FILE *srcfile)
+ {
+ 	filesystem *fs;
++	struct stat srcstat, dststat;
+ 
+ 	fs = malloc(sizeof(*fs));
+ 	if (!fs)
+ 		error_msg_and_die("not enough memory for filesystem");
+ 	memset(fs, 0, sizeof(*fs));
+ 	fs->swapit = swapit;
+-	if(!(fs->data = calloc(nbblocks, BLOCKSIZE)))
+-		error_msg_and_die("not enough memory for filesystem");
++	cache_init(&fs->blks, MAX_FREE_CACHE_BLOCKS, blk_elem_val, blk_freed);
++	cache_init(&fs->blkmaps, MAX_FREE_CACHE_BLOCKMAPS,
++		   blkmap_elem_val, blkmap_freed);
++	cache_init(&fs->inodes, MAX_FREE_CACHE_INODES,
++		   inode_elem_val, inode_freed);
+ 	fs->hdlink_cnt = HDLINK_CNT;
+ 	fs->hdlinks.hdl = calloc(sizeof(struct hdlink_s), fs->hdlink_cnt);
+ 	if (!fs->hdlinks.hdl)
+@@ -2131,12 +2308,44 @@ alloc_fs(uint32 nbblocks, int swapit)
+ 	fs->hdlinks.count = 0 ;
+ 	fs->sb = (superblock *) (fs->data + BLOCKSIZE);
+ 	fs->gd = (groupdescriptor *) (fs->sb + 1);
++
++	if (strcmp(fname, "-") == 0)
++		fs->f = tmpfile();
++	else if (srcfile) {
++		if (fstat(fileno(srcfile), &srcstat))
++			perror_msg_and_die("fstat srcfile");
++		if (stat(fname, &dststat))
++			perror_msg_and_die("stat-ing %s", fname);
++		if (srcstat.st_ino == dststat.st_ino) {
++			// source and destination are the same file, don't
++			// truncate or copy, just use the file.
++			fs->f = fopen(fname, "r+b");
++		} else {
++			fs->f = fopen(fname, "w+b");
++			if (fs->f)
++				copy_file(fs, fs->f, srcfile,
++					  nbblocks * BLOCKSIZE);
++		}
++	} else
++		fs->f = fopen(fname, "w+b");
++	if (!fs->f)
++		perror_msg_and_die("opening %s", fname);
+ 	return fs;
+ }
+ 
++/* Make sure the output file is the right size */
++static void
++set_file_size(filesystem *fs)
++{
++	if (ftruncate(fileno(fs->f),
++		      ((off_t) fs->sb->s_blocks_count) * BLOCKSIZE))
++		perror_msg_and_die("set_file_size: ftruncate");
++}
++
+ // initialize an empty filesystem
+ static filesystem *
+-init_fs(int nbblocks, int nbinodes, int nbresrvd, int holes, uint32 fs_timestamp, int swapit)
++init_fs(int nbblocks, int nbinodes, int nbresrvd, int holes,
++	uint32 fs_timestamp, int swapit, char *fname)
+ {
+ 	uint32 i;
+ 	filesystem *fs;
+@@ -2184,10 +2393,16 @@ init_fs(int nbblocks, int nbinodes, int nbresrvd, int holes, uint32 fs_timestamp
+ 	free_blocks = nbblocks - overhead_per_group*nbgroups - 1 /*boot block*/;
+ 	free_blocks_per_group = nbblocks_per_group - overhead_per_group;
+ 
+-	fs = alloc_fs(nbblocks, swapit);
++	fs = alloc_fs(swapit, fname, nbblocks, NULL);
+ 	fs->nheadblocks = (((nbgroups * sizeof(groupdescriptor))
+ 			    + sizeof(superblock) + (BLOCKSIZE - 1))
+ 			   / BLOCKSIZE);
++	fs->sb = (superblock *) malloc(BLOCKSIZE);
++	if (!fs->sb)
++		error_msg_and_die("error allocating header memory");
++	fs->gd = (groupdescriptor *) calloc(fs->nheadblocks - 1, BLOCKSIZE);
++	if (!fs->gd)
++		error_msg_and_die("error allocating header memory");
+ 
+ 	// create the superblock for an empty filesystem
+ 	fs->sb->s_inodes_count = nbinodes_per_group * nbgroups;
+@@ -2205,6 +2420,10 @@ init_fs(int nbblocks, int nbinodes, int nbresrvd, int holes, uint32 fs_timestamp
+ 	fs->sb->s_magic = EXT2_MAGIC_NUMBER;
+ 	fs->sb->s_lastcheck = fs_timestamp;
+ 
++	fs->sb->s_reserved[200] = 0;
++
++	set_file_size(fs);
++
+ 	// set up groupdescriptors
+ 	for(i=0, bbmpos=gdsz+2, ibmpos=bbmpos+1, itblpos=ibmpos+1;
+ 		i<nbgroups;
+@@ -2315,27 +2534,49 @@ init_fs(int nbblocks, int nbinodes, int nbresrvd, int holes, uint32 fs_timestamp
+ 
+ // loads a filesystem from disk
+ static filesystem *
+-load_fs(FILE * fh, int swapit)
++load_fs(FILE * fh, int swapit, char *fname)
+ {
+-	size_t fssize;
++	off_t fssize;
+ 	filesystem *fs;
+-	if((fseek(fh, 0, SEEK_END) < 0) || ((ssize_t)(fssize = ftell(fh)) == -1))
++
++	if((fseek(fh, 0, SEEK_END) < 0) || ((fssize = ftello(fh)) == -1))
+ 		perror_msg_and_die("input filesystem image");
+ 	rewind(fh);
+-	fssize = (fssize + BLOCKSIZE - 1) / BLOCKSIZE;
++	if ((fssize % BLOCKSIZE) != 0)
++		error_msg_and_die("Input file not a multiple of block size");
++	fssize /= BLOCKSIZE;
+ 	if(fssize < 16) // totally arbitrary
+ 		error_msg_and_die("too small filesystem");
+-	fs = alloc_fs(fssize, swapit);
+-	if(fread(fs->data, BLOCKSIZE, fssize, fh) != fssize)
+-		perror_msg_and_die("input filesystem image");
+-
++	fs = alloc_fs(swapit, fname, fssize, fh);
++
++	/* Read and check the superblock, then read the superblock
++	 * and all the group descriptors */
++	fs->sb = malloc(BLOCKSIZE);
++	if (!fs->sb)
++		error_msg_and_die("error allocating header memory");
++	if (fseek(fs->f, BLOCKSIZE, SEEK_SET))
++		perror_msg_and_die("fseek");
++	if (fread(fs->sb, BLOCKSIZE, 1, fs->f) != 1)
++		perror_msg_and_die("fread filesystem image superblock");
+ 	if(swapit)
+-		swap_badfs(fs);
++		swap_sb(fs->sb);
+ 	if(fs->sb->s_rev_level || (fs->sb->s_magic != EXT2_MAGIC_NUMBER))
+ 		error_msg_and_die("not a suitable ext2 filesystem");
+ 	fs->nheadblocks = (((GRP_NBGROUPS(fs) * sizeof(groupdescriptor))
+ 			    + sizeof(superblock) + (BLOCKSIZE - 1))
+ 			   / BLOCKSIZE);
++
++	fs->gd = calloc(fs->nheadblocks - 1, BLOCKSIZE);
++	if (!fs->gd)
++		error_msg_and_die("error allocating header memory");
++	if (fread(fs->gd, BLOCKSIZE, fs->nheadblocks - 1, fs->f)
++	    != (fs->nheadblocks - 1))
++		perror_msg_and_die("fread filesystem image group descriptors");
++
++	if(swapit)
++		swap_gds(fs);
++
++	set_file_size(fs);
+ 	return fs;
+ }
+ 
+@@ -2343,7 +2584,9 @@ static void
+ free_fs(filesystem *fs)
+ {
+ 	free(fs->hdlinks.hdl);
+-	free(fs->data);
++	fclose(fs->f);
++	free(fs->sb);
++	free(fs->gd);
+ 	free(fs);
+ }
+ 
+@@ -2631,16 +2874,30 @@ print_fs(filesystem *fs)
+ }
+ 
+ static void
+-dump_fs(filesystem *fs, FILE * fh, int swapit)
+-{
+-	uint32 nbblocks = fs->sb->s_blocks_count;
++finish_fs(filesystem *fs)
++{
++	if (cache_flush(&fs->inodes))
++		error_msg_and_die("entry mismatch on inode cache flush");
++	if (cache_flush(&fs->blkmaps))
++		error_msg_and_die("entry mismatch on blockmap cache flush");
++	if (cache_flush(&fs->blks))
++		error_msg_and_die("entry mismatch on block cache flush");
+ 	fs->sb->s_reserved[200] = 0;
+-	if(swapit)
+-		swap_goodfs(fs);
+-	if(fwrite(fs->data, BLOCKSIZE, nbblocks, fh) < nbblocks)
+-		perror_msg_and_die("output filesystem image");
+-	if(swapit)
+-		swap_badfs(fs);
++	if(fs->swapit) {
++		swap_sb(fs->sb);
++		swap_gds(fs);
++	}
++	if (fseek(fs->f, BLOCKSIZE, SEEK_SET))
++		perror_msg_and_die("fseek");
++	if(fwrite(fs->sb, BLOCKSIZE, 1, fs->f) != 1)
++		perror_msg_and_die("output filesystem superblock");
++	if(fwrite(fs->gd, BLOCKSIZE, fs->nheadblocks - 1, fs->f)
++	   != (fs->nheadblocks - 1))
++		perror_msg_and_die("output filesystem group descriptors");
++	if(fs->swapit) {
++		swap_sb(fs->sb);
++		swap_gds(fs);
++	}
+ }
+ 
+ static void
+@@ -2851,11 +3108,11 @@ main(int argc, char **argv)
+ 		if(strcmp(fsin, "-"))
+ 		{
+ 			FILE * fh = xfopen(fsin, "rb");
+-			fs = load_fs(fh, bigendian);
++			fs = load_fs(fh, bigendian, fsout);
+ 			fclose(fh);
+ 		}
+ 		else
+-			fs = load_fs(stdin, bigendian);
++			fs = load_fs(stdin, bigendian, fsout);
+ 	}
+ 	else
+ 	{
+@@ -2886,7 +3143,7 @@ main(int argc, char **argv)
+ 		if(fs_timestamp == -1)
+ 			fs_timestamp = time(NULL);
+ 		fs = init_fs(nbblocks, nbinodes, nbresrvd, holes, fs_timestamp,
+-			     bigendian);
++			     bigendian, fsout);
+ 	}
+ 	
+ 	populate_fs(fs, dopt, didx, squash_uids, squash_perms, fs_timestamp, NULL);
+@@ -2925,14 +3182,10 @@ main(int argc, char **argv)
+ 		flist_blocks(fs, nod, fh);
+ 		fclose(fh);
+ 	}
+-	if(strcmp(fsout, "-"))
+-	{
+-		FILE * fh = xfopen(fsout, "wb");
+-		dump_fs(fs, fh, bigendian);
+-		fclose(fh);
+-	}
+-	else
+-		dump_fs(fs, stdout, bigendian);
++	finish_fs(fs);
++	if(strcmp(fsout, "-") == 0)
++		copy_file(fs, stdout, fs->f, fs->sb->s_blocks_count);
++
+ 	free_fs(fs);
+ 	return 0;
+ }
+diff --git a/list.h b/list.h
+new file mode 100644
+index 0000000..52bb181
+--- /dev/null
++++ b/list.h
+@@ -0,0 +1,78 @@
++#ifndef __LIST_H__
++#define __LIST_H__
++
++#if STDC_HEADERS
++# include <stdlib.h>
++# include <stddef.h>
++#else
++# if HAVE_STDLIB_H
++#  include <stdlib.h>
++# endif
++# if HAVE_STDDEF_H
++#  include <stddef.h>
++# endif
++#endif
++
++#ifndef offsetof
++#define offsetof(st, m) \
++     ((size_t) ( (char *)&((st *)(0))->m - (char *)0 ))
++#endif
++
++#define container_of(ptr, type, member) ({ \
++                const typeof( ((type *)0)->member ) *__mptr = (ptr); \
++                (type *)( (char *)__mptr - offsetof(type,member) );})
++
++typedef struct list_elem
++{
++	struct list_elem *next;
++	struct list_elem *prev;
++} list_elem;
++
++static inline void list_init(list_elem *list)
++{
++	list->next = list;
++	list->prev = list;
++}
++
++static inline void list_add_after(list_elem *pos, list_elem *elem)
++{
++	elem->next = pos->next;
++	elem->prev = pos;
++	pos->next->prev = elem;
++	pos->next = elem;
++}
++
++static inline void list_add_before(list_elem *pos, list_elem *elem)
++{
++	elem->prev = pos->prev;
++	elem->next = pos;
++	pos->prev->next = elem;
++	pos->prev = elem;
++}
++
++static inline void list_del(list_elem *elem)
++{
++	elem->next->prev = elem->prev;
++	elem->prev->next = elem->next;
++}
++
++static inline void list_item_init(list_elem *elem)
++{
++	elem->next = elem;
++	elem->prev = elem;
++}
++
++static inline int list_empty(list_elem *elem)
++{
++	return elem->next == elem;
++}
++
++#define list_for_each_elem(list, curr)			\
++	for ((curr) = (list)->next; (curr) != (list); (curr) = (curr)->next)
++
++#define list_for_each_elem_safe(list, curr, next)	\
++	for ((curr) = (list)->next, (next) = (curr)->next;	\
++	     (curr) != (list);					\
++	     (curr) = (next), (next) = (curr)->next)
++
++#endif /* __LIST_H__ */
+-- 
+1.7.4.1
+
diff --git a/meta/recipes-devtools/genext2fs/genext2fs-1.4.1/0011-Copy-files-into-the-filesystem-a-piece-at-a-time.patch b/meta/recipes-devtools/genext2fs/genext2fs-1.4.1/0011-Copy-files-into-the-filesystem-a-piece-at-a-time.patch
new file mode 100644
index 0000000..52dec56
--- /dev/null
+++ b/meta/recipes-devtools/genext2fs/genext2fs-1.4.1/0011-Copy-files-into-the-filesystem-a-piece-at-a-time.patch
@@ -0,0 +1,103 @@ 
+Upstream-Status: inappropriate
+
+From 0a7d5b11e62e54f88ce3a49d0c2327d537b3f531 Mon Sep 17 00:00:00 2001
+From: Corey Minyard <cminyard@mvista.com>
+Date: Sun, 5 Jun 2011 15:42:24 -0500
+Subject: [PATCH 11/19] Copy files into the filesystem a piece at a time
+
+Instead of malloc-ing and entire files-worth of memory, reading it in,
+and writing it to the filesystem, do it a piece at a time.  This allows
+very large files to be supported.
+
+Also, use off_t and make it 64-bits so it supports filesystems and files
+larger than 2GB.  Full support for >2GB files is not quite here, that
+requires rev 1 filesystem support, which is coming later.
+---
+ genext2fs.c |   35 +++++++++++++++++++++++------------
+ 1 files changed, 23 insertions(+), 12 deletions(-)
+
+diff --git a/genext2fs.c b/genext2fs.c
+index f79438d..8a7f589 100644
+--- a/genext2fs.c
++++ b/genext2fs.c
+@@ -53,6 +53,12 @@
+ // 			along with -q, -P, -U
+ 
+ 
++/*
++ * Allow fseeko/off_t to be 64-bit offsets to allow filesystems and
++ * individual files >2GB.
++ */
++#define _FILE_OFFSET_BITS 64
++
+ #include <config.h>
+ #include <stdio.h>
+ 
+@@ -603,7 +609,6 @@ struct hdlinks_s
+ typedef struct
+ {
+ 	FILE *f;
+-	uint8 *data;
+ 	superblock *sb;
+ 	groupdescriptor *gd;
+ 	uint32 nheadblocks;
+@@ -1907,30 +1912,38 @@ mklink_fs(filesystem *fs, uint32 parent_nod, const char *name, size_t size, uint
+ 	return nod;
+ }
+ 
++#define COPY_BLOCKS 16
++#define CB_SIZE (COPY_BLOCKS * BLOCKSIZE)
++
+ // make a file from a FILE*
+ static uint32
+-mkfile_fs(filesystem *fs, uint32 parent_nod, const char *name, uint32 mode, size_t size, FILE *f, uid_t uid, gid_t gid, uint32 ctime, uint32 mtime)
++mkfile_fs(filesystem *fs, uint32 parent_nod, const char *name, uint32 mode, off_t size, FILE *f, uid_t uid, gid_t gid, uint32 ctime, uint32 mtime)
+ {
+ 	uint8 * b;
+ 	uint32 nod = mknod_fs(fs, parent_nod, name, mode|FM_IFREG, uid, gid, 0, 0, ctime, mtime);
+ 	nod_info *ni;
+ 	inode *node = get_nod(fs, nod, &ni);
++	size_t readbytes;
+ 	inode_pos ipos;
+ 
++
++	b = malloc(CB_SIZE);
++	if (!b)
++		error_msg_and_die("mkfile_fs: out of memory");
+ 	inode_pos_init(fs, &ipos, nod, INODE_POS_TRUNCATE, NULL);
+ 	node->i_size = size;
+-	if (size) {
+-		if(!(b = (uint8*)calloc(rndup(size, BLOCKSIZE), 1)))
+-			error_msg_and_die("not enough mem to read file '%s'", name);
+-		if(f)
+-			if (fread(b, size, 1, f) != 1) // FIXME: ugly. use mmap() ...
+-				error_msg_and_die("fread failed");
++	while (size) {
++		readbytes = fread(b, 1, CB_SIZE, f);
++		if ((size < CB_SIZE && readbytes != size)
++		    || (size >= CB_SIZE && readbytes != CB_SIZE))
++			error_msg_and_die("fread failed");
+ 		extend_inode_blk(fs, &ipos, b,
+-				 rndup(size, BLOCKSIZE) / BLOCKSIZE);
+-		free(b);
++				 rndup(readbytes, BLOCKSIZE) / BLOCKSIZE);
++		size -= readbytes;
+ 	}
+ 	inode_pos_finish(fs, &ipos);
+ 	put_nod(ni);
++	free(b);
+ 	return nod;
+ }
+ 
+@@ -2306,8 +2319,6 @@ alloc_fs(int swapit, char *fname, uint32 nbblocks, FILE *srcfile)
+ 	if (!fs->hdlinks.hdl)
+ 		error_msg_and_die("Not enough memory");
+ 	fs->hdlinks.count = 0 ;
+-	fs->sb = (superblock *) (fs->data + BLOCKSIZE);
+-	fs->gd = (groupdescriptor *) (fs->sb + 1);
+ 
+ 	if (strcmp(fname, "-") == 0)
+ 		fs->f = tmpfile();
+-- 
+1.7.4.1
+
diff --git a/meta/recipes-devtools/genext2fs/genext2fs-1.4.1/0012-Add-rev-1-support-large-file-support-and-rework-hole.patch b/meta/recipes-devtools/genext2fs/genext2fs-1.4.1/0012-Add-rev-1-support-large-file-support-and-rework-hole.patch
new file mode 100644
index 0000000..2de6608
--- /dev/null
+++ b/meta/recipes-devtools/genext2fs/genext2fs-1.4.1/0012-Add-rev-1-support-large-file-support-and-rework-hole.patch
@@ -0,0 +1,211 @@ 
+Upstream-Status: inappropriate
+
+From fbcbbba3b65402bd43a9e36593d544ff3451620e Mon Sep 17 00:00:00 2001
+From: Corey Minyard <cminyard@mvista.com>
+Date: Fri, 3 Jun 2011 21:09:25 -0500
+Subject: [PATCH 12/19] Add rev 1 support, large file support, and rework holes
+
+Add support for individual files larger than 2GB, which requires some
+rev 1 filesystem support.
+
+Also, since we have a non-overly filesystem structure, rework the
+OP_HOLES hack and just put that flag in the filesystem structure.
+This avoid having to mess around with the reserved bytes (which
+changed with rev 1 support).
+---
+ genext2fs.c |   69 +++++++++++++++++++++++++++++++++++++++++++++++-----------
+ 1 files changed, 56 insertions(+), 13 deletions(-)
+
+diff --git a/genext2fs.c b/genext2fs.c
+index 8a7f589..e420bba 100644
+--- a/genext2fs.c
++++ b/genext2fs.c
+@@ -233,10 +233,6 @@ struct stats {
+ #define FM_IWOTH   0000002	// write
+ #define FM_IXOTH   0000001	// execute
+ 
+-// options
+-
+-#define OP_HOLES     0x01       // make files with holes
+-
+ /* Defines for accessing group details */
+ 
+ // Number of groups in the filesystem
+@@ -485,7 +481,22 @@ is_blk_empty(uint8 *b)
+ 	udecl32(s_creator_os)          /* Indicator of which OS created the filesystem */ \
+ 	udecl32(s_rev_level)           /* The revision level of the filesystem */ \
+ 	udecl16(s_def_resuid)          /* The default uid for reserved blocks */ \
+-	udecl16(s_def_resgid)          /* The default gid for reserved blocks */
++	udecl16(s_def_resgid)          /* The default gid for reserved blocks */ \
++	/* rev 1 version fields start here */ \
++	udecl32(s_first_ino) 		/* First non-reserved inode */	\
++	udecl16(s_inode_size) 		/* size of inode structure */	\
++	udecl16(s_block_group_nr) 	/* block group # of this superblock */ \
++	udecl32(s_feature_compat) 	/* compatible feature set */	\
++	udecl32(s_feature_incompat) 	/* incompatible feature set */	\
++	udecl32(s_feature_ro_compat) 	/* readonly-compatible feature set */ \
++	utdecl8(s_uuid,16)		/* 128-bit uuid for volume */	\
++	utdecl8(s_volume_name,16) 	/* volume name */		\
++	utdecl8(s_last_mounted,64) 	/* directory where last mounted */ \
++	udecl32(s_algorithm_usage_bitmap) /* For compression */
++
++#define EXT2_GOOD_OLD_FIRST_INO	11
++#define EXT2_GOOD_OLD_INODE_SIZE 128
++#define EXT2_FEATURE_RO_COMPAT_LARGE_FILE	0x0002
+ 
+ #define groupdescriptor_decl \
+ 	udecl32(bg_block_bitmap)       /* Block number of the block bitmap */ \
+@@ -525,6 +536,7 @@ is_blk_empty(uint8 *b)
+ 
+ #define decl8(x) int8 x;
+ #define udecl8(x) uint8 x;
++#define utdecl8(x,n) uint8 x[n];
+ #define decl16(x) int16 x;
+ #define udecl16(x) uint16 x;
+ #define decl32(x) int32 x;
+@@ -534,7 +546,7 @@ is_blk_empty(uint8 *b)
+ typedef struct
+ {
+ 	superblock_decl
+-	uint32 s_reserved[235];       // Reserved
++	uint32 s_reserved[205];       // Reserved
+ } superblock;
+ 
+ typedef struct
+@@ -616,6 +628,8 @@ typedef struct
+ 	int32 hdlink_cnt;
+ 	struct hdlinks_s hdlinks;
+ 
++	int holes;
++
+ 	listcache blks;
+ 	listcache inodes;
+ 	listcache blkmaps;
+@@ -628,6 +642,7 @@ typedef struct
+ 
+ #undef decl8
+ #undef udecl8
++#undef utdecl8
+ #undef decl16
+ #undef udecl16
+ #undef decl32
+@@ -636,6 +651,7 @@ typedef struct
+ 
+ #define decl8(x)
+ #define udecl8(x)
++#define utdecl8(x,n)
+ #define decl16(x) this->x = swab16(this->x);
+ #define udecl16(x) this->x = swab16(this->x);
+ #define decl32(x) this->x = swab32(this->x);
+@@ -700,6 +716,7 @@ swap_block(block b)
+ 
+ #undef decl8
+ #undef udecl8
++#undef utdecl8
+ #undef decl16
+ #undef udecl16
+ #undef decl32
+@@ -1695,7 +1712,7 @@ extend_inode_blk(filesystem *fs, inode_pos *ipos, block b, int amount)
+ 
+ 	for (pos = 0; amount; pos += BLOCKSIZE)
+ 	{
+-		int hole = ((fs->sb->s_reserved[200] & OP_HOLES) && is_blk_empty(b + pos));
++		int hole = (fs->holes && is_blk_empty(b + pos));
+ 
+ 		bk = walk_bw(fs, ipos->nod, &ipos->bw, &amount, hole);
+ 		if (bk == WALK_END)
+@@ -1912,6 +1929,14 @@ mklink_fs(filesystem *fs, uint32 parent_nod, const char *name, size_t size, uint
+ 	return nod;
+ }
+ 
++static void
++fs_upgrade_rev1_largefile(filesystem *fs)
++{
++	fs->sb->s_rev_level = 1;
++	fs->sb->s_first_ino = EXT2_GOOD_OLD_FIRST_INO;
++	fs->sb->s_inode_size = EXT2_GOOD_OLD_INODE_SIZE;
++}
++
+ #define COPY_BLOCKS 16
+ #define CB_SIZE (COPY_BLOCKS * BLOCKSIZE)
+ 
+@@ -1926,11 +1951,16 @@ mkfile_fs(filesystem *fs, uint32 parent_nod, const char *name, uint32 mode, off_
+ 	size_t readbytes;
+ 	inode_pos ipos;
+ 
+-
+ 	b = malloc(CB_SIZE);
+ 	if (!b)
+ 		error_msg_and_die("mkfile_fs: out of memory");
+ 	inode_pos_init(fs, &ipos, nod, INODE_POS_TRUNCATE, NULL);
++	if (size > 0x7fffffff) {
++		if (fs->sb->s_rev_level < 1)
++			fs_upgrade_rev1_largefile(fs);
++		fs->sb->s_feature_ro_compat |= EXT2_FEATURE_RO_COMPAT_LARGE_FILE;
++	}
++	node->i_dir_acl = size >> 32;
+ 	node->i_size = size;
+ 	while (size) {
+ 		readbytes = fread(b, 1, CB_SIZE, f);
+@@ -2269,6 +2299,8 @@ swap_gds(filesystem *fs)
+ 
+ // Copy size blocks from src to dst, putting holes in the output
+ // file (if possible) if the input block is all zeros.
++// Copy size blocks from src to dst, putting holes in the output
++// file (if possible) if the input block is all zeros.
+ static void
+ copy_file(filesystem *fs, FILE *dst, FILE *src, size_t size)
+ {
+@@ -2284,7 +2316,7 @@ copy_file(filesystem *fs, FILE *dst, FILE *src, size_t size)
+ 	while (size > 0) {
+ 		if (fread(b, BLOCKSIZE, 1, src) != 1)
+ 			perror_msg_and_die("copy failed on read");
+-		if ((dst != stdout) && is_blk_empty(b)) {
++		if ((dst != stdout) && fs->holes && is_blk_empty(b)) {
+ 			/* Empty block, just skip it */
+ 			if (fseek(dst, BLOCKSIZE, SEEK_CUR))
+ 				perror_msg_and_die("fseek");
+@@ -2537,8 +2569,7 @@ init_fs(int nbblocks, int nbinodes, int nbresrvd, int holes,
+ 	fs->sb->s_max_mnt_count = 20;
+ 
+ 	// options for me
+-	if(holes)
+-		fs->sb->s_reserved[200] |= OP_HOLES;
++	fs->holes = holes;
+ 	
+ 	return fs;
+ }
+@@ -2571,8 +2602,21 @@ load_fs(FILE * fh, int swapit, char *fname)
+ 		perror_msg_and_die("fread filesystem image superblock");
+ 	if(swapit)
+ 		swap_sb(fs->sb);
+-	if(fs->sb->s_rev_level || (fs->sb->s_magic != EXT2_MAGIC_NUMBER))
++	if((fs->sb->s_rev_level > 1) || (fs->sb->s_magic != EXT2_MAGIC_NUMBER))
+ 		error_msg_and_die("not a suitable ext2 filesystem");
++	if (fs->sb->s_rev_level > 0) {
++		if (fs->sb->s_first_ino != EXT2_GOOD_OLD_FIRST_INO)
++			error_msg_and_die("First inode incompatible");
++		if (fs->sb->s_inode_size != EXT2_GOOD_OLD_INODE_SIZE)
++			error_msg_and_die("inode size incompatible");
++		if (fs->sb->s_feature_compat)
++			error_msg_and_die("Unsupported compat features");
++		if (fs->sb->s_feature_incompat)
++			error_msg_and_die("Unsupported incompat features");
++		if (fs->sb->s_feature_ro_compat
++		    & ~EXT2_FEATURE_RO_COMPAT_LARGE_FILE)
++			error_msg_and_die("Unsupported ro compat features");
++	}
+ 	fs->nheadblocks = (((GRP_NBGROUPS(fs) * sizeof(groupdescriptor))
+ 			    + sizeof(superblock) + (BLOCKSIZE - 1))
+ 			   / BLOCKSIZE);
+@@ -2893,7 +2937,6 @@ finish_fs(filesystem *fs)
+ 		error_msg_and_die("entry mismatch on blockmap cache flush");
+ 	if (cache_flush(&fs->blks))
+ 		error_msg_and_die("entry mismatch on block cache flush");
+-	fs->sb->s_reserved[200] = 0;
+ 	if(fs->swapit) {
+ 		swap_sb(fs->sb);
+ 		swap_gds(fs);
+-- 
+1.7.4.1
+
diff --git a/meta/recipes-devtools/genext2fs/genext2fs-1.4.1/0013-Add-volume-id-support.patch b/meta/recipes-devtools/genext2fs/genext2fs-1.4.1/0013-Add-volume-id-support.patch
new file mode 100644
index 0000000..1777dd6
--- /dev/null
+++ b/meta/recipes-devtools/genext2fs/genext2fs-1.4.1/0013-Add-volume-id-support.patch
@@ -0,0 +1,86 @@ 
+Upstream-Status: inappropriate
+
+From 3b9edc3e7c809f64dc164d73b64ab4a606ccfea1 Mon Sep 17 00:00:00 2001
+From: Corey Minyard <cminyard@mvista.com>
+Date: Fri, 3 Jun 2011 21:24:49 -0500
+Subject: [PATCH 13/19] Add volume id support.
+
+Add support for setting the volume id of the filesystem.  This is
+functionally the same as the patch from OpenEmbedded, but is built
+on previous changes in this patch set.
+---
+ genext2fs.8 |    3 +++
+ genext2fs.c |   12 ++++++++++--
+ 2 files changed, 13 insertions(+), 2 deletions(-)
+
+diff --git a/genext2fs.8 b/genext2fs.8
+index 0f77e7c..8b8db25 100644
+--- a/genext2fs.8
++++ b/genext2fs.8
+@@ -61,6 +61,9 @@ Size of the image in blocks.
+ .BI "\-N, \-\-number\-of\-inodes inodes"
+ Maximum number of inodes.
+ .TP
++.BI "\-L, \-\-volume\-id name"
++Set the volume id (volume name) for the filesystem.
++.TP
+ .BI "\-i, \-\-bytes\-per\-inode ratio"
+ Used to calculate the maximum number of inodes from the available blocks.
+ .TP
+diff --git a/genext2fs.c b/genext2fs.c
+index e420bba..4d01bc4 100644
+--- a/genext2fs.c
++++ b/genext2fs.c
+@@ -3058,6 +3058,7 @@ main(int argc, char **argv)
+ 	int squash_perms = 0;
+ 	uint16 endian = 1;
+ 	int bigendian = !*(char*)&endian;
++	char *volumelabel = NULL;
+ 	filesystem *fs;
+ 	int i;
+ 	int c;
+@@ -3071,6 +3072,7 @@ main(int argc, char **argv)
+ 	  { "size-in-blocks",	required_argument,	NULL, 'b' },
+ 	  { "bytes-per-inode",	required_argument,	NULL, 'i' },
+ 	  { "number-of-inodes",	required_argument,	NULL, 'N' },
++	  { "volume-label",     required_argument,      NULL, 'L' },
+ 	  { "reserved-percentage", required_argument,	NULL, 'm' },
+ 	  { "block-map",	required_argument,	NULL, 'g' },
+ 	  { "fill-value",	required_argument,	NULL, 'e' },
+@@ -3087,11 +3089,11 @@ main(int argc, char **argv)
+ 
+ 	app_name = argv[0];
+ 
+-	while((c = getopt_long(argc, argv, "x:d:D:b:i:N:m:g:e:zfqUPhVv", longopts, NULL)) != EOF) {
++	while((c = getopt_long(argc, argv, "x:d:D:b:i:N:L:m:g:e:zfqUPhVv", longopts, NULL)) != EOF) {
+ #else
+ 	app_name = argv[0];
+ 
+-	while((c = getopt(argc, argv,      "x:d:D:b:i:N:m:g:e:zfqUPhVv")) != EOF) {
++	while((c = getopt(argc, argv,      "x:d:D:b:i:N:L:m:g:e:zfqUPhVv")) != EOF) {
+ #endif /* HAVE_GETOPT_LONG */
+ 		switch(c)
+ 		{
+@@ -3111,6 +3113,9 @@ main(int argc, char **argv)
+ 			case 'N':
+ 				nbinodes = SI_atof(optarg);
+ 				break;
++			case 'L':
++				volumelabel = optarg;
++				break;
+ 			case 'm':
+ 				reserved_frac = SI_atof(optarg) / 100;
+ 				break;
+@@ -3199,6 +3204,9 @@ main(int argc, char **argv)
+ 		fs = init_fs(nbblocks, nbinodes, nbresrvd, holes, fs_timestamp,
+ 			     bigendian, fsout);
+ 	}
++	if (volumelabel != NULL)
++		strncpy((char *)fs->sb->s_volume_name, volumelabel,
++			sizeof(fs->sb->s_volume_name));
+ 	
+ 	populate_fs(fs, dopt, didx, squash_uids, squash_perms, fs_timestamp, NULL);
+ 
+-- 
+1.7.4.1
+
diff --git a/meta/recipes-devtools/genext2fs/genext2fs-1.4.1/0014-Remove-unneeded-setting-of-s_reserved.patch b/meta/recipes-devtools/genext2fs/genext2fs-1.4.1/0014-Remove-unneeded-setting-of-s_reserved.patch
new file mode 100644
index 0000000..de196b0
--- /dev/null
+++ b/meta/recipes-devtools/genext2fs/genext2fs-1.4.1/0014-Remove-unneeded-setting-of-s_reserved.patch
@@ -0,0 +1,28 @@ 
+Upstream-Status: inappropriate
+
+From d20116479700bdc8a3b63b0025562671292728d6 Mon Sep 17 00:00:00 2001
+From: Corey Minyard <cminyard@mvista.com>
+Date: Mon, 6 Jun 2011 13:39:50 -0500
+Subject: [PATCH 14/19] Remove unneeded setting of s_reserved.
+
+This was missed in the previous patch to remove OP_HOLES.
+---
+ genext2fs.c |    2 --
+ 1 files changed, 0 insertions(+), 2 deletions(-)
+
+diff --git a/genext2fs.c b/genext2fs.c
+index 4d01bc4..b466a6d 100644
+--- a/genext2fs.c
++++ b/genext2fs.c
+@@ -2463,8 +2463,6 @@ init_fs(int nbblocks, int nbinodes, int nbresrvd, int holes,
+ 	fs->sb->s_magic = EXT2_MAGIC_NUMBER;
+ 	fs->sb->s_lastcheck = fs_timestamp;
+ 
+-	fs->sb->s_reserved[200] = 0;
+-
+ 	set_file_size(fs);
+ 
+ 	// set up groupdescriptors
+-- 
+1.7.4.1
+
diff --git a/meta/recipes-devtools/genext2fs/genext2fs-1.4.1/0015-Rework-creating-the-lost-found-directory.patch b/meta/recipes-devtools/genext2fs/genext2fs-1.4.1/0015-Rework-creating-the-lost-found-directory.patch
new file mode 100644
index 0000000..fbde366
--- /dev/null
+++ b/meta/recipes-devtools/genext2fs/genext2fs-1.4.1/0015-Rework-creating-the-lost-found-directory.patch
@@ -0,0 +1,57 @@ 
+Upstream-Status: inappropriate
+
+From 34a2d139e3cbc9fec1b07171fd13684d4239aa6b Mon Sep 17 00:00:00 2001
+From: Corey Minyard <cminyard@mvista.com>
+Date: Mon, 6 Jun 2011 13:51:50 -0500
+Subject: [PATCH 15/19] Rework creating the lost+found directory
+
+For some reason the lost+found directory was being created with
+the size of the number of reserved blocks.  I can't find any rationale
+for that, mke2fs creates it with 16 blocks.  So just create it with
+16 blocks, too.
+---
+ genext2fs.c |   15 ++++++---------
+ 1 files changed, 6 insertions(+), 9 deletions(-)
+
+diff --git a/genext2fs.c b/genext2fs.c
+index b466a6d..fc7fe5f 100644
+--- a/genext2fs.c
++++ b/genext2fs.c
+@@ -2537,28 +2537,25 @@ init_fs(int nbblocks, int nbinodes, int nbresrvd, int holes,
+ 	inode_pos_finish(fs, &ipos);
+ 	put_dir(&dw);
+ 
+-	// make lost+found directory and reserve blocks
++	// make lost+found directory
+ 	if(fs->sb->s_r_blocks_count)
+ 	{
+ 		inode *node;
+ 		uint8 *b;
+ 
+-		nod = mkdir_fs(fs, EXT2_ROOT_INO, "lost+found", FM_IRWXU, 0, 0, fs_timestamp, fs_timestamp);
++		nod = mkdir_fs(fs, EXT2_ROOT_INO, "lost+found", FM_IRWXU,
++			       0, 0, fs_timestamp, fs_timestamp);
+ 		b = get_workblk();
+ 		memset(b, 0, BLOCKSIZE);
+ 		((directory*)b)->d_rec_len = BLOCKSIZE;
+-		/* We run into problems with e2fsck if directory lost+found grows
+-		 * bigger than this. Need to find out why this happens - sundar
+-		 */
+-		if (fs->sb->s_r_blocks_count > fs->sb->s_blocks_count * MAX_RESERVED_BLOCKS )
+-			fs->sb->s_r_blocks_count = fs->sb->s_blocks_count * MAX_RESERVED_BLOCKS;
+ 		inode_pos_init(fs, &ipos, nod, INODE_POS_EXTEND, NULL);
+-		for(i = 1; i < fs->sb->s_r_blocks_count; i++)
++		// It is always 16 blocks to start out with
++		for(i = 0; i < 16; i++)
+ 			extend_inode_blk(fs, &ipos, b, 1);
+ 		inode_pos_finish(fs, &ipos);
+ 		free_workblk(b);
+ 		node = get_nod(fs, nod, &ni);
+-		node->i_size = fs->sb->s_r_blocks_count * BLOCKSIZE;
++		node->i_size = 16 * BLOCKSIZE;
+ 		put_nod(ni);
+ 	}
+ 
+-- 
+1.7.4.1
+
diff --git a/meta/recipes-devtools/genext2fs/genext2fs-1.4.1/0016-Fix-the-documentation-for-the-new-L-option.patch b/meta/recipes-devtools/genext2fs/genext2fs-1.4.1/0016-Fix-the-documentation-for-the-new-L-option.patch
new file mode 100644
index 0000000..8c24db1
--- /dev/null
+++ b/meta/recipes-devtools/genext2fs/genext2fs-1.4.1/0016-Fix-the-documentation-for-the-new-L-option.patch
@@ -0,0 +1,29 @@ 
+Upstream-Status: inappropriate
+
+From 1b5007ee27b9dbf5e84341dceadb83b96e6530d5 Mon Sep 17 00:00:00 2001
+From: Corey Minyard <cminyard@mvista.com>
+Date: Mon, 6 Jun 2011 13:58:57 -0500
+Subject: [PATCH 16/19] Fix the documentation for the new -L option
+
+---
+ genext2fs.8 |    4 ++--
+ 1 files changed, 2 insertions(+), 2 deletions(-)
+
+diff --git a/genext2fs.8 b/genext2fs.8
+index 8b8db25..35e1588 100644
+--- a/genext2fs.8
++++ b/genext2fs.8
+@@ -61,8 +61,8 @@ Size of the image in blocks.
+ .BI "\-N, \-\-number\-of\-inodes inodes"
+ Maximum number of inodes.
+ .TP
+-.BI "\-L, \-\-volume\-id name"
+-Set the volume id (volume name) for the filesystem.
++.BI "\-L, \-\-volume\-label name"
++Set the volume label for the filesystem.
+ .TP
+ .BI "\-i, \-\-bytes\-per\-inode ratio"
+ Used to calculate the maximum number of inodes from the available blocks.
+-- 
+1.7.4.1
+
diff --git a/meta/recipes-devtools/genext2fs/genext2fs-1.4.1/0017-Fix-file-same-comparison.patch b/meta/recipes-devtools/genext2fs/genext2fs-1.4.1/0017-Fix-file-same-comparison.patch
new file mode 100644
index 0000000..40a7807
--- /dev/null
+++ b/meta/recipes-devtools/genext2fs/genext2fs-1.4.1/0017-Fix-file-same-comparison.patch
@@ -0,0 +1,30 @@ 
+Upstream-Status: inappropriate
+
+From 33c92a0b663d16d2260b391d39aa745acd4b360e Mon Sep 17 00:00:00 2001
+From: Corey Minyard <cminyard@mvista.com>
+Date: Tue, 7 Jun 2011 07:23:23 -0500
+Subject: [PATCH 17/19] Fix "file same" comparison
+
+It's not enough to check the inode, you also have to check the device
+to make sure a file is the same.
+---
+ genext2fs.c |    3 ++-
+ 1 files changed, 2 insertions(+), 1 deletions(-)
+
+diff --git a/genext2fs.c b/genext2fs.c
+index fc7fe5f..485393c 100644
+--- a/genext2fs.c
++++ b/genext2fs.c
+@@ -2359,7 +2359,8 @@ alloc_fs(int swapit, char *fname, uint32 nbblocks, FILE *srcfile)
+ 			perror_msg_and_die("fstat srcfile");
+ 		if (stat(fname, &dststat))
+ 			perror_msg_and_die("stat-ing %s", fname);
+-		if (srcstat.st_ino == dststat.st_ino) {
++		if (srcstat.st_ino == dststat.st_ino
++		    && srcstat.st_dev == dststat.st_dev) {
+ 			// source and destination are the same file, don't
+ 			// truncate or copy, just use the file.
+ 			fs->f = fopen(fname, "r+b");
+-- 
+1.7.4.1
+
diff --git a/meta/recipes-devtools/genext2fs/genext2fs-1.4.1/0018-Handle-files-changing-while-we-are-working.patch b/meta/recipes-devtools/genext2fs/genext2fs-1.4.1/0018-Handle-files-changing-while-we-are-working.patch
new file mode 100644
index 0000000..3ea877c
--- /dev/null
+++ b/meta/recipes-devtools/genext2fs/genext2fs-1.4.1/0018-Handle-files-changing-while-we-are-working.patch
@@ -0,0 +1,89 @@ 
+Upstream-Status: inappropriate
+
+From fd1f52c435099eab199f2b06eb411aab337d7f47 Mon Sep 17 00:00:00 2001
+From: Corey Minyard <cminyard@mvista.com>
+Date: Tue, 7 Jun 2011 07:29:53 -0500
+Subject: [PATCH 18/19] Handle files changing while we are working
+
+Files may change or be deleted between the lstat and the actual
+operation to read them and put them into the target filesystem.
+Handle this more gracefully.  Warn on file deletions, and handle
+whatever size is read, not whatever size happens to be in the
+inode when we stat-ed it.
+
+Also clear the data to the end of an file's last block, to keep
+things clean.
+---
+ genext2fs.c |   30 ++++++++++++++++++------------
+ 1 files changed, 18 insertions(+), 12 deletions(-)
+
+diff --git a/genext2fs.c b/genext2fs.c
+index 485393c..28ba94f 100644
+--- a/genext2fs.c
++++ b/genext2fs.c
+@@ -1942,19 +1942,30 @@ fs_upgrade_rev1_largefile(filesystem *fs)
+ 
+ // make a file from a FILE*
+ static uint32
+-mkfile_fs(filesystem *fs, uint32 parent_nod, const char *name, uint32 mode, off_t size, FILE *f, uid_t uid, gid_t gid, uint32 ctime, uint32 mtime)
++mkfile_fs(filesystem *fs, uint32 parent_nod, const char *name, uint32 mode, FILE *f, uid_t uid, gid_t gid, uint32 ctime, uint32 mtime)
+ {
+ 	uint8 * b;
+ 	uint32 nod = mknod_fs(fs, parent_nod, name, mode|FM_IFREG, uid, gid, 0, 0, ctime, mtime);
+ 	nod_info *ni;
+ 	inode *node = get_nod(fs, nod, &ni);
++	off_t size = 0;
+ 	size_t readbytes;
+ 	inode_pos ipos;
++	int fullsize;
+ 
+ 	b = malloc(CB_SIZE);
+ 	if (!b)
+ 		error_msg_and_die("mkfile_fs: out of memory");
+ 	inode_pos_init(fs, &ipos, nod, INODE_POS_TRUNCATE, NULL);
++	readbytes = fread(b, 1, CB_SIZE, f);
++	while (readbytes) {
++		fullsize = rndup(readbytes, BLOCKSIZE);
++		// Fill to end of block with zeros.
++		memset(b + readbytes, 0, fullsize - readbytes);
++		extend_inode_blk(fs, &ipos, b, fullsize / BLOCKSIZE);
++		size += readbytes;
++		readbytes = fread(b, 1, CB_SIZE, f);
++	}
+ 	if (size > 0x7fffffff) {
+ 		if (fs->sb->s_rev_level < 1)
+ 			fs_upgrade_rev1_largefile(fs);
+@@ -1962,15 +1973,6 @@ mkfile_fs(filesystem *fs, uint32 parent_nod, const char *name, uint32 mode, off_
+ 	}
+ 	node->i_dir_acl = size >> 32;
+ 	node->i_size = size;
+-	while (size) {
+-		readbytes = fread(b, 1, CB_SIZE, f);
+-		if ((size < CB_SIZE && readbytes != size)
+-		    || (size >= CB_SIZE && readbytes != CB_SIZE))
+-			error_msg_and_die("fread failed");
+-		extend_inode_blk(fs, &ipos, b,
+-				 rndup(readbytes, BLOCKSIZE) / BLOCKSIZE);
+-		size -= readbytes;
+-	}
+ 	inode_pos_finish(fs, &ipos);
+ 	put_nod(ni);
+ 	free(b);
+@@ -2256,8 +2258,12 @@ add2fs_from_dir(filesystem *fs, uint32 this_nod, int squash_uids, int squash_per
+ 					free(lnk);
+ 					break;
+ 				case S_IFREG:
+-					fh = xfopen(dent->d_name, "rb");
+-					nod = mkfile_fs(fs, this_nod, name, mode, st.st_size, fh, uid, gid, ctime, mtime);
++					fh = fopen(dent->d_name, "rb");
++					if (!fh) {
++						error_msg("Unable to open file %s", dent->d_name);
++						break;
++					}
++					nod = mkfile_fs(fs, this_nod, name, mode, fh, uid, gid, ctime, mtime);
+ 					fclose(fh);
+ 					break;
+ 				case S_IFDIR:
+-- 
+1.7.4.1
+
diff --git a/meta/recipes-devtools/genext2fs/genext2fs-1.4.1/0019-Make-sure-superblock-is-clear-on-allocation.patch b/meta/recipes-devtools/genext2fs/genext2fs-1.4.1/0019-Make-sure-superblock-is-clear-on-allocation.patch
new file mode 100644
index 0000000..a75a812
--- /dev/null
+++ b/meta/recipes-devtools/genext2fs/genext2fs-1.4.1/0019-Make-sure-superblock-is-clear-on-allocation.patch
@@ -0,0 +1,42 @@ 
+Upstream-Status: inappropriate
+
+From a263cdabad01ba99581b26d1753cd459f2669413 Mon Sep 17 00:00:00 2001
+From: Corey Minyard <cminyard@mvista.com>
+Date: Tue, 7 Jun 2011 09:14:19 -0500
+Subject: [PATCH 19/19] Make sure superblock is clear on allocation
+
+Use calloc, not malloc, so the allocated superblock is zero-ed.  Also,
+get rid of some unnecessary casts.
+---
+ genext2fs.c |    6 +++---
+ 1 files changed, 3 insertions(+), 3 deletions(-)
+
+diff --git a/genext2fs.c b/genext2fs.c
+index 28ba94f..fab90be 100644
+--- a/genext2fs.c
++++ b/genext2fs.c
+@@ -2447,10 +2447,10 @@ init_fs(int nbblocks, int nbinodes, int nbresrvd, int holes,
+ 	fs->nheadblocks = (((nbgroups * sizeof(groupdescriptor))
+ 			    + sizeof(superblock) + (BLOCKSIZE - 1))
+ 			   / BLOCKSIZE);
+-	fs->sb = (superblock *) malloc(BLOCKSIZE);
++	fs->sb = calloc(1, BLOCKSIZE);
+ 	if (!fs->sb)
+ 		error_msg_and_die("error allocating header memory");
+-	fs->gd = (groupdescriptor *) calloc(fs->nheadblocks - 1, BLOCKSIZE);
++	fs->gd = calloc(fs->nheadblocks - 1, BLOCKSIZE);
+ 	if (!fs->gd)
+ 		error_msg_and_die("error allocating header memory");
+ 
+@@ -2595,7 +2595,7 @@ load_fs(FILE * fh, int swapit, char *fname)
+ 
+ 	/* Read and check the superblock, then read the superblock
+ 	 * and all the group descriptors */
+-	fs->sb = malloc(BLOCKSIZE);
++	fs->sb = calloc(1, BLOCKSIZE);
+ 	if (!fs->sb)
+ 		error_msg_and_die("error allocating header memory");
+ 	if (fseek(fs->f, BLOCKSIZE, SEEK_SET))
+-- 
+1.7.4.1
+
diff --git a/meta/recipes-devtools/genext2fs/genext2fs-1.4.1/fix-nbblocks-cast.patch b/meta/recipes-devtools/genext2fs/genext2fs-1.4.1/fix-nbblocks-cast.patch
index 3fd15e0..05b095e 100644
--- a/meta/recipes-devtools/genext2fs/genext2fs-1.4.1/fix-nbblocks-cast.patch
+++ b/meta/recipes-devtools/genext2fs/genext2fs-1.4.1/fix-nbblocks-cast.patch
@@ -11,11 +11,13 @@  int tmp_nbinodes = nbblocks * BLOCKSIZE / bytes_per_inode;
 Upstream-Status: Submitted
 Signed-off-by: Saul Wold <sgw@linux.intel.com>
 
+Rebased by Dexuan Cui <dexuan.cui@intel.com>
+
 Index: genext2fs-1.4.1/genext2fs.c
 ===================================================================
---- genext2fs-1.4.1.orig/genext2fs.c
-+++ genext2fs-1.4.1/genext2fs.c
-@@ -2447,7 +2447,7 @@ extern int optind, opterr, optopt;
+--- a/genext2fs.c	2012-03-29 00:07:20.308856017 +0800
++++ b/genext2fs.c	2012-03-29 00:09:06.848856005 +0800
+@@ -3041,7 +3041,7 @@
  int
  main(int argc, char **argv)
  {
@@ -24,12 +26,12 @@  Index: genext2fs-1.4.1/genext2fs.c
  	int nbinodes = -1;
  	int nbresrvd = -1;
  	float bytes_per_inode = -1;
-@@ -2609,7 +2609,7 @@ main(int argc, char **argv)
+@@ -3203,7 +3203,7 @@
  		}
  		if(fs_timestamp == -1)
  			fs_timestamp = time(NULL);
--		fs = init_fs(nbblocks, nbinodes, nbresrvd, holes, fs_timestamp);
-+		fs = init_fs((int)nbblocks, nbinodes, nbresrvd, holes, fs_timestamp);
+-		fs = init_fs(nbblocks, nbinodes, nbresrvd, holes, fs_timestamp,
++		fs = init_fs((int)nbblocks, nbinodes, nbresrvd, holes, fs_timestamp,
+ 			     bigendian, fsout);
  	}
- 	
- 	populate_fs(fs, dopt, didx, squash_uids, squash_perms, fs_timestamp, NULL);
+ 	if (volumelabel != NULL)
diff --git a/meta/recipes-devtools/genext2fs/genext2fs-1.4.1/update_to_1.95.patch b/meta/recipes-devtools/genext2fs/genext2fs-1.4.1/update_to_1.95.patch
new file mode 100644
index 0000000..ea2b16c
--- /dev/null
+++ b/meta/recipes-devtools/genext2fs/genext2fs-1.4.1/update_to_1.95.patch
@@ -0,0 +1,119 @@ 
+See http://genext2fs.cvs.sourceforge.net/viewvc/genext2fs/genext2fs/genext2fs.c?view=log
+
+The latest version of genext2fs.c is the v1.95 in the cvs repo:
+http://genext2fs.cvs.sourceforge.net/viewvc/genext2fs/genext2fs/genext2fs.c?revision=1.95
+
+First let's upgrade to the version.
+
+Upstream-Status: inappropriate
+
+Signed-off-by: Dexuan Cui <dexuan.cui@intel.com>
+
+--- a/genext2fs.c	2007-03-26 22:19:59.000000000 +0800
++++ b/genext2fs.c	2012-03-28 22:15:03.678856820 +0800
+@@ -286,7 +286,9 @@
+ // older solaris. Note that this is still not very portable, in that
+ // the return value cannot be trusted.
+ 
+-#if SCANF_CAN_MALLOC
++#if 0 // SCANF_CAN_MALLOC
++// C99 define "a" for floating point, so you can have runtime surprise
++// according the library versions
+ # define SCANF_PREFIX "a"
+ # define SCANF_STRING(s) (&s)
+ #else
+@@ -778,7 +780,7 @@
+ 		if(hdlinks.hdl[i].src_inode == inode)
+ 			return i;
+ 	}
+-	return -1;		
++	return -1;
+ }
+ 
+ // printf helper macro
+@@ -1356,20 +1358,23 @@
+ 	return nod;
+ }
+ 
++// chmod an inode
++void
++chmod_fs(filesystem *fs, uint32 nod, uint16 mode, uint16 uid, uint16 gid)
++{
++	inode *node;
++	node = get_nod(fs, nod);
++	node->i_mode = (node->i_mode & ~FM_IMASK) | (mode & FM_IMASK);
++	node->i_uid = uid;
++	node->i_gid = gid;
++}
++
+ // create a simple inode
+ static uint32
+ mknod_fs(filesystem *fs, uint32 parent_nod, const char *name, uint16 mode, uint16 uid, uint16 gid, uint8 major, uint8 minor, uint32 ctime, uint32 mtime)
+ {
+ 	uint32 nod;
+ 	inode *node;
+-	if((nod = find_dir(fs, parent_nod, name)))
+-	{
+-		node = get_nod(fs, nod);
+-		if((node->i_mode & FM_IFMT) != (mode & FM_IFMT))
+-			error_msg_and_die("node '%s' already exists and isn't of the same type", name);
+-		node->i_mode = mode;
+-	}
+-	else
+ 	{
+ 		nod = alloc_nod(fs);
+ 		node = get_nod(fs, nod);
+@@ -1591,13 +1596,24 @@
+ 				dname = malloc(len + 1);
+ 				for(i = start; i < count; i++)
+ 				{
++					uint32 oldnod;
+ 					SNPRINTF(dname, len, "%s%lu", name, i);
+-					mknod_fs(fs, nod, dname, mode, uid, gid, major, minor + (i * increment - start), ctime, mtime);
++					oldnod = find_dir(fs, nod, dname);
++					if(oldnod)
++						chmod_fs(fs, oldnod, mode, uid, gid);
++					else
++						mknod_fs(fs, nod, dname, mode, uid, gid, major, minor + (i * increment - start), ctime, mtime);
+ 				}
+ 				free(dname);
+ 			}
+ 			else
+-				mknod_fs(fs, nod, name, mode, uid, gid, major, minor, ctime, mtime);
++			{
++				uint32 oldnod = find_dir(fs, nod, name);
++				if(oldnod)
++					chmod_fs(fs, oldnod, mode, uid, gid);
++				else
++					mknod_fs(fs, nod, name, mode, uid, gid, major, minor, ctime, mtime);
++			}
+ 		}
+ 	}
+ 	if (line)
+@@ -1664,6 +1680,17 @@
+ 			}
+ 		else
+ 		{
++			if((nod = find_dir(fs, this_nod, name)))
++			{
++				error_msg("ignoring duplicate entry %s", name);
++				if(S_ISDIR(st.st_mode)) {
++					if(chdir(dent->d_name) < 0)
++						perror_msg_and_die(name);
++					add2fs_from_dir(fs, nod, squash_uids, squash_perms, fs_timestamp, stats);
++					chdir("..");
++				}
++				continue;
++			}
+ 			save_nod = 0;
+ 			/* Check for hardlinks */
+ 			if (!S_ISDIR(st.st_mode) && !S_ISLNK(st.st_mode) && st.st_nlink > 1) {
+@@ -1994,7 +2021,7 @@
+ 		//system blocks
+ 		for(j = 1; j <= overhead_per_group; j++)
+ 			allocate(bbm, j); 
+-		
++
+ 		/* Inode bitmap */
+ 		ibm = get_blk(fs,fs->gd[i].bg_inode_bitmap);	
+ 		//non-filesystem inodes
diff --git a/meta/recipes-devtools/genext2fs/genext2fs_1.4.1.bb b/meta/recipes-devtools/genext2fs/genext2fs_1.4.1.bb
index 012ec6c..702245f 100644
--- a/meta/recipes-devtools/genext2fs/genext2fs_1.4.1.bb
+++ b/meta/recipes-devtools/genext2fs/genext2fs_1.4.1.bb
@@ -1,8 +1,28 @@ 
 require genext2fs.inc
 
-PR = "r1"
+PR = "r2"
 
-SRC_URI += "file://fix-nbblocks-cast.patch"
+SRC_URI += "file://update_to_1.95.patch \
+            file://0001-Fix-warnings-remove-some-unused-macros.patch \
+            file://0002-Add-put_blk-and-put_nod-routines.patch \
+            file://0003-Add-get_blkmap-and-put_blkmap.patch \
+            file://0004-Add-a-dirwalker-for-walking-through-directory-entrie.patch \
+            file://0005-Make-filesystem-struct-not-an-overloay.patch \
+            file://0006-Improve-the-efficiency-of-extend_blk.patch \
+            file://0007-Move-hdlinks-into-the-filesystem-structure.patch \
+            file://0008-Separate-out-the-creation-of-the-filesystem-structur.patch \
+            file://0009-Move-byte-swapping-into-the-get-put-routines.patch \
+            file://0010-Convert-over-to-keeping-the-filesystem-on-disk.patch \
+            file://0011-Copy-files-into-the-filesystem-a-piece-at-a-time.patch \
+            file://0012-Add-rev-1-support-large-file-support-and-rework-hole.patch \
+            file://0013-Add-volume-id-support.patch \
+            file://0014-Remove-unneeded-setting-of-s_reserved.patch \
+            file://0015-Rework-creating-the-lost-found-directory.patch \
+            file://0016-Fix-the-documentation-for-the-new-L-option.patch \
+            file://0017-Fix-file-same-comparison.patch \
+            file://0018-Handle-files-changing-while-we-are-working.patch \
+            file://0019-Make-sure-superblock-is-clear-on-allocation.patch \
+            file://fix-nbblocks-cast.patch"
 
 SRC_URI[md5sum] = "b7b6361bcce2cedff1ae437fadafe53b"
 SRC_URI[sha256sum] = "404dbbfa7a86a6c3de8225c8da254d026b17fd288e05cec4df2cc7e1f4feecfc"