diff --git a/tools/genext2fs/Makefile b/tools/genext2fs/Makefile
deleted file mode 100644
index ad941c71ac4..00000000000
--- a/tools/genext2fs/Makefile
+++ /dev/null
@@ -1,51 +0,0 @@
-# 
-# Copyright (C) 2006 OpenWrt.org
-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-#
-
-include $(TOPDIR)/rules.mk
-
-PKG_NAME:=genext2fs
-PKG_VERSION:=1.4.1
-
-PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.gz
-PKG_SOURCE_URL:=@SF/genext2fs
-PKG_MD5SUM:=b7b6361bcce2cedff1ae437fadafe53b
-
-include $(INCLUDE_DIR)/host-build.mk
-
-HOST_CONFIGURE_ARGS = \
-	--target=$(GNU_HOST_NAME) \
-	--host=$(GNU_HOST_NAME) \
-	--build=$(GNU_HOST_NAME) \
-	--program-prefix="" \
-	--program-suffix="" \
-	--prefix=/usr \
-	--exec-prefix=/usr \
-	--bindir=/usr/bin \
-	--sbindir=/usr/sbin \
-	--libexecdir=/usr/lib \
-	--sysconfdir=/etc \
-	--datadir=/usr/share \
-	--localstatedir=/var \
-	--mandir=/usr/man \
-	--infodir=/usr/info \
-
-define Host/Compile
-	$(MAKE) -C $(HOST_BUILD_DIR) \
-		CFLAGS="$(HOST_CFLAGS)" \
-		LDFLAGS="$(HOST_LDFLAGS)" \
-		all
-endef
-
-define Host/Install
-	install -m0755 $(HOST_BUILD_DIR)/genext2fs $(STAGING_DIR_HOST)/bin/
-endef
-
-define Host/Clean
-	rm -f $(STAGING_DIR_HOST)/bin/genext2fs
-endef
-
-$(eval $(call HostBuild))
diff --git a/tools/genext2fs/patches/100-c99_scanf.patch b/tools/genext2fs/patches/100-c99_scanf.patch
deleted file mode 100644
index e7aa17cc6fa..00000000000
--- a/tools/genext2fs/patches/100-c99_scanf.patch
+++ /dev/null
@@ -1,21 +0,0 @@
-commit 3b8ca0ce9a0b58287a780747c90c449bdebfe464
-Author: Xavier Bestel <bestouff@users.sourceforge.net>
-Date:   Mon Jan 14 08:52:44 2008 +0000
-
-    removed use of %as is scanf (GNU conflicts with C99) by Giacomo Catenazzi <cate@debian.org>
-
-diff --git a/genext2fs.c b/genext2fs.c
-index 070b270..f0d797d 100644
---- a/genext2fs.c
-+++ b/genext2fs.c
-@@ -286,7 +286,9 @@ typedef unsigned int uint32;
- // 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
diff --git a/tools/genext2fs/patches/200-autoconf.patch b/tools/genext2fs/patches/200-autoconf.patch
deleted file mode 100644
index b3317bdd10a..00000000000
--- a/tools/genext2fs/patches/200-autoconf.patch
+++ /dev/null
@@ -1,13 +0,0 @@
-Index: genext2fs/m4/ac_func_scanf_can_malloc.m4
-===================================================================
---- genext2fs.orig/m4/ac_func_scanf_can_malloc.m4	2011-09-03 21:28:49.000000000 +0200
-+++ genext2fs/m4/ac_func_scanf_can_malloc.m4	2011-09-03 21:29:41.000000000 +0200
-@@ -9,7 +9,7 @@
- # --------------------------------------
- AC_DEFUN([AC_FUNC_SCANF_CAN_MALLOC],
-   [ AC_CHECK_HEADERS([stdlib.h])
--    AC_CACHE_CHECK([whether scanf can malloc], [ac_scanf_can_malloc],
-+    AC_CACHE_CHECK([whether scanf can malloc], [ac_cv_func_scanf_can_malloc],
-     [ AC_RUN_IFELSE(
-       [ AC_LANG_PROGRAM(
-         [
diff --git a/tools/genext2fs/patches/300-blocksize-creator.patch b/tools/genext2fs/patches/300-blocksize-creator.patch
deleted file mode 100644
index 97a4836eeb2..00000000000
--- a/tools/genext2fs/patches/300-blocksize-creator.patch
+++ /dev/null
@@ -1,558 +0,0 @@
-Index: genext2fs/genext2fs.c
-===================================================================
---- genext2fs.orig/genext2fs.c	2011-09-03 14:21:17.000000000 +0200
-+++ genext2fs/genext2fs.c	2011-09-03 14:21:17.000000000 +0200
-@@ -151,13 +151,24 @@
- 
- // block size
- 
--#define BLOCKSIZE         1024
-+static int blocksize = 1024;
-+
-+#define BLOCKSIZE         blocksize
- #define BLOCKS_PER_GROUP  8192
- #define INODES_PER_GROUP  8192
- /* Percentage of blocks that are reserved.*/
- #define RESERVED_BLOCKS       5/100
- #define MAX_RESERVED_BLOCKS  25/100
- 
-+/* The default value for s_creator_os. */
-+#if defined(__GNU__)
-+# define CREATOR_OS  1 /* Hurd */
-+#elif defined(__FreeBSD__)
-+# define CREATOR_OS  3 /* FreeBSD */
-+#else
-+# define CREATOR_OS  0 /* Linux */
-+#endif
-+
- 
- // inode block size (why is it != BLOCKSIZE ?!?)
- /* The field i_blocks in the ext2 inode stores the number of data blocks
-@@ -239,10 +250,10 @@
- 	  (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) )
-+#define GRP_GET_GROUP_BBM(fs,grp) ( get_blk((fs), get_gd((fs),(grp))->bg_block_bitmap) )
- 
- // 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) )
-+#define GRP_GET_GROUP_IBM(fs,grp) ( get_blk((fs), get_gd((fs),(grp))->bg_inode_bitmap) )
- 		
- // 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)
-@@ -532,7 +543,7 @@
- 	char d_name[0];
- } directory;
- 
--typedef uint8 block[BLOCKSIZE];
-+typedef uint8 *block;
- 
- /* blockwalker fields:
-    The blockwalker is used to access all the blocks of a file (including
-@@ -571,16 +582,12 @@
- 
- 
- /* Filesystem structure that support groups */
--#if BLOCKSIZE == 1024
- typedef struct
- {
--	block zero;            // The famous block 0
--	superblock sb;         // The superblock
--	groupdescriptor gd[0]; // The group descriptors
-+	uint8 zero[1024];      // Room for bootloader stuff
-+	superblock sb;         // The superblock, always at 1024
-+	// group descriptors come next, see get_gd() below
- } filesystem;
--#else
--#error UNHANDLED BLOCKSIZE
--#endif
- 
- // now the endianness swap
- 
-@@ -820,6 +827,14 @@
- 	return (uint8*)fs + blk*BLOCKSIZE;
- }
- 
-+// the group descriptors are aligned on the block size
-+static inline groupdescriptor *
-+get_gd(filesystem *fs, int no)
-+{
-+	int gdblk = (sizeof (filesystem) + BLOCKSIZE - 1) / BLOCKSIZE;
-+	return ((groupdescriptor *) get_blk(fs, gdblk)) + no;
-+}
-+
- // return a given inode from a filesystem
- static inline inode *
- get_nod(filesystem *fs, uint32 nod)
-@@ -829,7 +844,7 @@
- 
- 	offset = GRP_IBM_OFFSET(fs,nod);
- 	grp = GRP_GROUP_OF_INODE(fs,nod);
--	itab = (inode *)get_blk(fs, fs->gd[grp].bg_inode_table);
-+	itab = (inode *)get_blk(fs, get_gd(fs,grp)->bg_inode_table);
- 	return itab+offset-1;
- }
- 
-@@ -875,18 +890,18 @@
- 
- 	grp = GRP_GROUP_OF_INODE(fs,nod);
- 	nbgroups = GRP_NBGROUPS(fs);
--	if(!(bk = allocate(get_blk(fs,fs->gd[grp].bg_block_bitmap), 0))) {
-+	if(!(bk = allocate(GRP_GET_GROUP_BBM(fs, grp), 0))) {
- 		for(grp=0;grp<nbgroups && !bk;grp++)
--			bk=allocate(get_blk(fs,fs->gd[grp].bg_block_bitmap),0);
-+			bk = allocate(GRP_GET_GROUP_BBM(fs, grp), 0);
- 		grp--;
- 	}
- 	if (!bk)
- 		error_msg_and_die("couldn't allocate a block (no free space)");
--	if(!(fs->gd[grp].bg_free_blocks_count--))
-+	if(!(get_gd(fs, 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--))
- 		error_msg_and_die("superblock free blocks count == 0 (corrupted fs?)");
--	return fs->sb.s_blocks_per_group*grp + bk;
-+	return fs->sb.s_first_data_block + fs->sb.s_blocks_per_group*grp + (bk-1);
- }
- 
- // free a block
-@@ -897,8 +912,8 @@
- 
- 	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);
--	fs->gd[grp].bg_free_blocks_count++;
-+	deallocate(GRP_GET_GROUP_BBM(fs, grp), bk);
-+	get_gd(fs, grp)->bg_free_blocks_count++;
- 	fs->sb.s_free_blocks_count++;
- }
- 
-@@ -918,16 +933,16 @@
- 	/* We do it for all inodes.                                           */
- 	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)
-+		if (get_gd(fs, grp)->bg_free_inodes_count < avefreei ||
-+		    get_gd(fs, grp)->bg_free_inodes_count == 0)
- 			continue;
- 		if (!best_group || 
--			fs->gd[grp].bg_free_blocks_count > fs->gd[best_group].bg_free_blocks_count)
-+			get_gd(fs, grp)->bg_free_blocks_count > get_gd(fs, 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(GRP_GET_GROUP_IBM(fs, best_group), 0)))
- 		error_msg_and_die("couldn't allocate an inode (no free inode)");
--	if(!(fs->gd[best_group].bg_free_inodes_count--))
-+	if(!(get_gd(fs, 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--))
- 		error_msg_and_die("superblock free blocks count == 0 (corrupted fs?)");
-@@ -1390,7 +1405,7 @@
- 			case FM_IFDIR:
- 				add2dir(fs, nod, nod, ".");
- 				add2dir(fs, nod, parent_nod, "..");
--				fs->gd[GRP_GROUP_OF_INODE(fs,nod)].bg_used_dirs_count++;
-+				get_gd(fs, GRP_GROUP_OF_INODE(fs,nod))->bg_used_dirs_count++;
- 				break;
- 		}
- 	}
-@@ -1860,7 +1875,7 @@
- 		swap_nod(nod);
- 	}
- 	for(i=0;i<GRP_NBGROUPS(fs);i++)
--		swap_gd(&(fs->gd[i]));
-+		swap_gd(get_gd(fs, i));
- 	swap_sb(&fs->sb);
- }
- 
-@@ -1870,7 +1885,7 @@
- 	uint32 i;
- 	swap_sb(&fs->sb);
- 	for(i=0;i<GRP_NBGROUPS(fs);i++)
--		swap_gd(&(fs->gd[i]));
-+		swap_gd(get_gd(fs, i));
- 	for(i = 1; i < fs->sb.s_inodes_count; i++)
- 	{
- 		inode *nod = get_nod(fs, i);
-@@ -1895,7 +1910,8 @@
- 
- // 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, uint32 creator_os)
- {
- 	uint32 i;
- 	filesystem *fs;
-@@ -1921,10 +1937,14 @@
- 	 */
- 	min_nbgroups = (nbinodes + INODES_PER_GROUP - 1) / INODES_PER_GROUP;
- 
-+	/* On filesystems with 1k block size, the bootloader area uses a full
-+	 * block. For 2048 and up, the superblock can be fitted into block 0.
-+	 */
-+	first_block = (BLOCKSIZE == 1024);
-+
- 	/* nbblocks is the total number of blocks in the filesystem.
- 	 * a block group can have no more than 8192 blocks.
- 	 */
--	first_block = (BLOCKSIZE == 1024);
- 	nbgroups = (nbblocks - first_block + BLOCKS_PER_GROUP - 1) / BLOCKS_PER_GROUP;
- 	if(nbgroups < min_nbgroups) nbgroups = min_nbgroups;
- 	nbblocks_per_group = rndup((nbblocks - first_block + nbgroups - 1)/nbgroups, 8);
-@@ -1936,10 +1956,10 @@
- 	gdsz = rndup(nbgroups*sizeof(groupdescriptor),BLOCKSIZE)/BLOCKSIZE;
- 	itblsz = nbinodes_per_group * sizeof(inode)/BLOCKSIZE;
- 	overhead_per_group = 3 /*sb,bbm,ibm*/ + gdsz + itblsz;
--	if((uint32)nbblocks - 1 < overhead_per_group * nbgroups)
--		error_msg_and_die("too much overhead, try fewer inodes or more blocks. Note: options have changed, see --help or the man page.");
--	free_blocks = nbblocks - overhead_per_group*nbgroups - 1 /*boot block*/;
-+	free_blocks = nbblocks - overhead_per_group*nbgroups - first_block;
- 	free_blocks_per_group = nbblocks_per_group - overhead_per_group;
-+	if(free_blocks < 0)
-+		error_msg_and_die("too much overhead, try fewer inodes or more blocks. Note: options have changed, see --help or the man page.");
- 
- 	if(!(fs = (filesystem*)calloc(nbblocks, BLOCKSIZE)))
- 		error_msg_and_die("not enough memory for filesystem");
-@@ -1959,28 +1979,31 @@
- 	fs->sb.s_wtime = fs_timestamp;
- 	fs->sb.s_magic = EXT2_MAGIC_NUMBER;
- 	fs->sb.s_lastcheck = fs_timestamp;
-+	fs->sb.s_creator_os = creator_os;
- 
- 	// set up groupdescriptors
--	for(i=0, bbmpos=gdsz+2, ibmpos=bbmpos+1, itblpos=ibmpos+1;
-+	for(i=0, bbmpos=first_block+1+gdsz, ibmpos=bbmpos+1, itblpos=ibmpos+1;
- 		i<nbgroups;
- 		i++, bbmpos+=nbblocks_per_group, ibmpos+=nbblocks_per_group, itblpos+=nbblocks_per_group)
- 	{
-+		groupdescriptor *gd = get_gd(fs, i);
-+
- 		if(free_blocks > free_blocks_per_group) {
--			fs->gd[i].bg_free_blocks_count = free_blocks_per_group;
-+			gd->bg_free_blocks_count = free_blocks_per_group;
- 			free_blocks -= free_blocks_per_group;
- 		} else {
--			fs->gd[i].bg_free_blocks_count = free_blocks;
-+			gd->bg_free_blocks_count = free_blocks;
- 			free_blocks = 0; // this is the last block group
- 		}
- 		if(i)
--			fs->gd[i].bg_free_inodes_count = nbinodes_per_group;
-+			gd->bg_free_inodes_count = nbinodes_per_group;
- 		else
--			fs->gd[i].bg_free_inodes_count = nbinodes_per_group -
-+			gd->bg_free_inodes_count = nbinodes_per_group -
- 							EXT2_FIRST_INO + 2;
--		fs->gd[i].bg_used_dirs_count = 0;
--		fs->gd[i].bg_block_bitmap = bbmpos;
--		fs->gd[i].bg_inode_bitmap = ibmpos;
--		fs->gd[i].bg_inode_table = itblpos;
-+		gd->bg_used_dirs_count = 0;
-+		gd->bg_block_bitmap = bbmpos;
-+		gd->bg_inode_bitmap = ibmpos;
-+		gd->bg_inode_table = itblpos;
- 	}
- 
- 	/* Mark non-filesystem blocks and inodes as allocated */
-@@ -1988,9 +2011,9 @@
- 	for(i = 0; i<nbgroups;i++) {
- 
- 		/* Block bitmap */
--		bbm = get_blk(fs,fs->gd[i].bg_block_bitmap);	
-+		bbm = GRP_GET_GROUP_BBM(fs, i);
- 		//non-filesystem blocks
--		for(j = fs->gd[i].bg_free_blocks_count
-+		for(j = get_gd(fs, i)->bg_free_blocks_count
- 		        + overhead_per_group + 1; j <= BLOCKSIZE * 8; j++)
- 			allocate(bbm, j); 
- 		//system blocks
-@@ -1998,7 +2021,7 @@
- 			allocate(bbm, j); 
- 		
- 		/* Inode bitmap */
--		ibm = get_blk(fs,fs->gd[i].bg_inode_bitmap);	
-+		ibm = GRP_GET_GROUP_IBM(fs, i);
- 		//non-filesystem inodes
- 		for(j = fs->sb.s_inodes_per_group+1; j <= BLOCKSIZE * 8; j++)
- 			allocate(ibm, j);
-@@ -2012,9 +2035,9 @@
- 	// make root inode and directory
- 	/* We have groups now. Add the root filesystem in group 0 */
- 	/* 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);
-+	get_gd(fs, 0)->bg_free_inodes_count--;
-+	get_gd(fs, 0)->bg_used_dirs_count = 1;
-+	itab0 = (inode *)get_blk(fs, get_gd(fs,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;
-@@ -2338,8 +2361,9 @@
- 	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",
--		     fs->gd[i].bg_block_bitmap, fs->gd[i].bg_inode_bitmap,
--		     fs->gd[i].bg_inode_table);
-+		     get_gd(fs, i)->bg_block_bitmap,
-+		     get_gd(fs, i)->bg_inode_bitmap,
-+		     get_gd(fs, i)->bg_inode_table);
- 		printf("block bitmap allocation:\n");
- 		print_bm(GRP_GET_GROUP_BBM(fs, i),fs->sb.s_blocks_per_group);
- 		printf("inode bitmap allocation:\n");
-@@ -2421,10 +2445,12 @@
- 	"  -x, --starting-image <image>\n"
- 	"  -d, --root <directory>\n"
- 	"  -D, --devtable <file>\n"
-+	"  -B, --block-size <bytes>\n"
- 	"  -b, --size-in-blocks <blocks>\n"
- 	"  -i, --bytes-per-inode <bytes per inode>\n"
- 	"  -N, --number-of-inodes <number of inodes>\n"
- 	"  -m, --reserved-percentage <percentage of blocks to reserve>\n"
-+	"  -o, --creator-os <os>      'linux', 'hurd', 'freebsd' or a numerical value.\n"
- 	"  -g, --block-map <path>     Generate a block map file for this path.\n"
- 	"  -e, --fill-value <value>   Fill unallocated blocks with value.\n"
- 	"  -z, --allow-holes          Allow files with holes.\n"
-@@ -2446,6 +2472,29 @@
- extern char* optarg;
- extern int optind, opterr, optopt;
- 
-+// parse the value for -o <os>
-+int
-+lookup_creator_os(const char *name)
-+{
-+	static const char *const creators[] =
-+		{"linux", "hurd", "2", "freebsd", NULL};
-+	char *endptr;
-+	int i;
-+
-+	// numerical value ?
-+	i = strtol(name, &endptr, 0);
-+	if(name[0] && *endptr == '\0')
-+		return i;
-+
-+	// symbolic name ?
-+	for(i=0; creators[i]; i++)
-+	       if(strcasecmp(creators[i], name) == 0)
-+		       return i;
-+
-+	// whatever ?
-+	return -1;
-+}
-+
- int
- main(int argc, char **argv)
- {
-@@ -2455,6 +2504,7 @@
- 	float bytes_per_inode = -1;
- 	float reserved_frac = -1;
- 	int fs_timestamp = -1;
-+	int creator_os = CREATOR_OS;
- 	char * fsout = "-";
- 	char * fsin = 0;
- 	char * dopt[MAX_DOPT];
-@@ -2478,10 +2528,12 @@
- 	  { "starting-image",	required_argument,	NULL, 'x' },
- 	  { "root",		required_argument,	NULL, 'd' },
- 	  { "devtable",		required_argument,	NULL, 'D' },
-+	  { "block-size",	required_argument,	NULL, 'B' },
- 	  { "size-in-blocks",	required_argument,	NULL, 'b' },
- 	  { "bytes-per-inode",	required_argument,	NULL, 'i' },
- 	  { "number-of-inodes",	required_argument,	NULL, 'N' },
- 	  { "reserved-percentage", required_argument,	NULL, 'm' },
-+	  { "creator-os",	required_argument,	NULL, 'o' },
- 	  { "block-map",	required_argument,	NULL, 'g' },
- 	  { "fill-value",	required_argument,	NULL, 'e' },
- 	  { "allow-holes",	no_argument, 		NULL, 'z' },
-@@ -2497,11 +2549,11 @@
- 
- 	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:b:i:N:m:o: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:b:i:N:m:o:g:e:zfqUPhVv")) != EOF) {
- #endif /* HAVE_GETOPT_LONG */
- 		switch(c)
- 		{
-@@ -2512,6 +2564,9 @@
- 			case 'D':
- 				dopt[didx++] = optarg;
- 				break;
-+			case 'B':
-+				blocksize = SI_atof(optarg);
-+				break;
- 			case 'b':
- 				nbblocks = SI_atof(optarg);
- 				break;
-@@ -2524,6 +2579,9 @@
- 			case 'm':
- 				reserved_frac = SI_atof(optarg) / 100;
- 				break;
-+			case 'o':
-+				creator_os = lookup_creator_os(optarg);
-+				break;
- 			case 'g':
- 				gopt[gidx++] = optarg;
- 				break;
-@@ -2567,6 +2625,11 @@
- 		error_msg_and_die("Not enough arguments. Try --help or else see the man page.");
- 	fsout = argv[optind];
- 
-+	if(blocksize != 1024 && blocksize != 2048 && blocksize != 4096)
-+		error_msg_and_die("Valid block sizes: 1024, 2048 or 4096.");
-+	if(creator_os < 0)
-+		error_msg_and_die("Creator OS unknown.");
-+
- 	hdlinks.hdl = (struct hdlink_s *)malloc(hdlink_cnt * sizeof(struct hdlink_s));
- 	if (!hdlinks.hdl)
- 		error_msg_and_die("Not enough memory");
-@@ -2611,7 +2674,8 @@
- 		}
- 		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, creator_os);
- 	}
- 	
- 	populate_fs(fs, dopt, didx, squash_uids, squash_perms, fs_timestamp, NULL);
-Index: genext2fs/test-gen.lib
-===================================================================
---- genext2fs.orig/test-gen.lib	2011-09-03 13:40:35.000000000 +0200
-+++ genext2fs/test-gen.lib	2011-09-03 14:21:17.000000000 +0200
-@@ -8,7 +8,7 @@
- # Creates an image with a file of given size
- # Usage: dgen file-size number-of-blocks 
- dgen () {
--	size=$1; blocks=$2
-+	size=$1; blocks=$2; blocksz=$3;
- 	rm -rf test
- 	mkdir -p test
- 	cd test
-@@ -20,7 +20,7 @@
-         chmod 777 file.$1
- 	TZ=UTC-11 touch -t 200502070321.43 file.$1 .
- 	cd ..
--	./genext2fs -N 17 -b $blocks -d test -f -q ext2.img 
-+	./genext2fs -B $blocksz -N 17 -b $blocks -d test -f -o Linux -q ext2.img
- }
- 
- # fgen - Exercises the -f spec-file option of genext2fs
-@@ -31,7 +31,7 @@
- 	mkdir -p test
- 	cp $fname test
- 	TZ=UTC-11 touch -t 200502070321.43 test/$fname
--	./genext2fs -N 92 -b $blocks -D test/$fname -f ext2.img
-+	./genext2fs -N 92 -b $blocks -D test/$fname -f -o Linux ext2.img
- }
- 
- # gen_cleanup - Remove the files generated by the above functions
-Index: genext2fs/test-mount.sh
-===================================================================
---- genext2fs.orig/test-mount.sh	2011-09-03 13:40:35.000000000 +0200
-+++ genext2fs/test-mount.sh	2011-09-03 14:21:17.000000000 +0200
-@@ -33,9 +33,9 @@
- # and returns the command line with which to invoke dtest()
- # Usage: dtest-mount file-size number-of-blocks 
- dtest_mount () {
--	size=$1; blocks=$2
--	echo Testing with file of size $size
--	dgen $size $blocks
-+	size=$1; blocks=$2; blocksz=$3;
-+	echo Testing $blocks blocks of $blocksz bytes with file of size $size
-+	dgen $size $blocks $blocksz
- 	/sbin/e2fsck -fn ext2.img || fail
- 	mkdir -p mnt
- 	mount -t ext2 -o ro,loop ext2.img mnt || fail
-@@ -44,7 +44,7 @@
- 	                                awk '{print $5}'`" ] ; then
- 		fail
- 	fi
--	pass dtest $size $blocks
-+	pass dtest $size $blocks $blocksz
- }
- 
- # ftest-mount - Exercise the -f spec-file option of genext2fs
-@@ -75,13 +75,21 @@
- 	pass ftest $fname $blocks
- }
- 
--dtest_mount 0 4096 
--dtest_mount 0 8193
--dtest_mount 0 8194
--dtest_mount 1 4096 
--dtest_mount 12288 4096 
--dtest_mount 274432 4096 
--dtest_mount 8388608 9000 
--dtest_mount 16777216 20000
-+dtest_mount 0 4096 1024
-+dtest_mount 0 2048 2048
-+dtest_mount 0 1024 4096
-+dtest_mount 0 8193 1024
-+dtest_mount 0 8194 1024
-+dtest_mount 0 8193 4096
-+dtest_mount 0 8194 2048
-+dtest_mount 1 4096 1024
-+dtest_mount 1 1024 4096
-+dtest_mount 12288 4096 1024
-+dtest_mount 274432 4096 1024
-+dtest_mount 8388608 9000 1024
-+dtest_mount 8388608 4500 2048
-+dtest_mount 8388608 2250 4096
-+dtest_mount 16777216 20000 1024
-+dtest_mount 16777216 10000 2048
- 
- ftest_mount device_table.txt 4096 
-Index: genext2fs/test.sh
-===================================================================
---- genext2fs.orig/test.sh	2011-09-03 13:40:35.000000000 +0200
-+++ genext2fs/test.sh	2011-09-03 14:21:17.000000000 +0200
-@@ -30,9 +30,9 @@
- # Creates an image with a file of given size and verifies it
- # Usage: dtest file-size number-of-blocks correct-checksum
- dtest () {
--	size=$1; blocks=$2; checksum=$3
-+	size=$1; blocks=$2; blocksz=$3; checksum=$4
- 	echo Testing with file of size $size
--	dgen $size $blocks
-+	dgen $size $blocks $blocksz
- 	md5cmp $checksum
- 	gen_cleanup
- }
-@@ -53,12 +53,20 @@
- # replace the following lines with the output of
- # sudo sh test-mount.sh|grep test
- 
--dtest 0 4096 3bc6424b8fcd51a0de34ee59d91d5f16
--dtest 0 8193 f174804f6b433b552706cbbfc60c416d
--dtest 0 8194 4855a55d0cbdc44584634df49ebd5711
--dtest 1 4096 09c569b6bfb45222c729c42d04d5451f
--dtest 12288 4096 61febcbfbf32024ef99103fcdc282c39
--dtest 274432 4096 0c517803552c55c1806e4220b0a0164f
--dtest 8388608 9000 e0e5ea15bced10ab486d8135584b5d8e
--dtest 16777216 20000 fdf636eb905ab4dc1bf76dce5ac5d209
-+dtest 0 4096 1024 3bc6424b8fcd51a0de34ee59d91d5f16
-+dtest 0 2048 2048 230afa16496df019878cc2370c661cdc
-+dtest 0 1024 4096 ebff5eeb38b70f3f1cd081e60eb44561
-+dtest 0 8193 1024 f174804f6b433b552706cbbfc60c416d
-+dtest 0 8194 1024 4855a55d0cbdc44584634df49ebd5711
-+dtest 0 8193 4096 c493679698418ec7e6552005e2d2a6d8
-+dtest 0 8194 2048 ec13f328fa7543563f35f494bddc059c
-+dtest 1 4096 1024 09c569b6bfb45222c729c42d04d5451f
-+dtest 1 1024 4096 d318a326fdc907810ae9e6b0a20e9b06
-+dtest 12288 4096 1024 61febcbfbf32024ef99103fcdc282c39
-+dtest 274432 4096 1024 0c517803552c55c1806e4220b0a0164f
-+dtest 8388608 9000 1024 e0e5ea15bced10ab486d8135584b5d8e
-+dtest 8388608 4500 2048 39f4d537a72f5053fd6891721c59680d
-+dtest 8388608 2250 4096 1d697fa4bc2cfffe02ac91edfadc40bf
-+dtest 16777216 20000 1024 fdf636eb905ab4dc1bf76dce5ac5d209
-+dtest 16777216 10000 2048 f9824a81ea5e74fdf469c097927c292b
- ftest device_table.txt 4096 a0af06d944b11d2902dfd705484c64cc
diff --git a/tools/genext2fs/patches/400-byteswap_fix.patch b/tools/genext2fs/patches/400-byteswap_fix.patch
deleted file mode 100644
index 7b3c00b5ee0..00000000000
--- a/tools/genext2fs/patches/400-byteswap_fix.patch
+++ /dev/null
@@ -1,44 +0,0 @@
-Index: genext2fs/genext2fs.c
-===================================================================
---- genext2fs.orig/genext2fs.c	2011-11-29 17:36:06.000000000 +0100
-+++ genext2fs/genext2fs.c	2011-11-29 17:37:37.000000000 +0100
-@@ -1779,7 +1779,8 @@
- 	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]));
-+			if (((uint32*)get_blk(fs, nod->i_block[EXT2_DIND_BLOCK]))[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 * BLOCKSIZE/4)
- 		return;
-@@ -1792,7 +1793,8 @@
- 				     (BLOCKSIZE/4)*(BLOCKSIZE/4) + 
- 				     i*(BLOCKSIZE/4)*(BLOCKSIZE/4) + 
- 				     j*(BLOCKSIZE/4)) ) 
--			  swap_block(get_blk(fs,b2[j]));
-+			  if (b2[j])
-+			  	swap_block(get_blk(fs,b2[j]));
- 			else {
- 			  done = 1;
- 			  break;
-@@ -1825,7 +1827,8 @@
- 	swap_block(get_blk(fs, nod->i_block[EXT2_DIND_BLOCK]));
- 	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 (((uint32*)get_blk(fs, nod->i_block[EXT2_DIND_BLOCK]))[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 * BLOCKSIZE/4)
- 		return;
- 	/* Adding support for triple indirection */
-@@ -1839,7 +1842,8 @@
- 				     (BLOCKSIZE/4)*(BLOCKSIZE/4) + 
- 				     i*(BLOCKSIZE/4)*(BLOCKSIZE/4) + 
- 				     j*(BLOCKSIZE/4)) ) 
--			  swap_block(get_blk(fs,b2[j]));
-+			  if (b2[j])
-+				swap_block(get_blk(fs,b2[j]));
- 			else {
- 			  done = 1;
- 			  break;