Initial blk64_t capable API calls.

index 7a1d966..4eb14d4 100644
@@ -68,6 +68,7 @@ typedef __u32		blk_t;
 typedef __u64		blk64_t;
 typedef __u32		dgrp_t;
 typedef __u32		ext2_off_t;
+typedef __u64		ext2_off64_t;
 typedef __s64		e2_blkcnt_t;
 typedef __u32		ext2_dirhash_t;
 

214 lines not on this page · raw message

index 4eb14d4..97abb3a 100644
@@ -650,6 +650,24 @@ extern errcode_t ext2fs_get_block_bitmap_range(ext2fs_block_bitmap bmap,
 					blk_t start, unsigned int num,
 					void *out);
 
+/* blknum.c */
+extern dgrp_t ext2fs_group_of_blk2(ext2_filsys fs, blk64_t);
+extern blk64_t ext2fs_group_first_block2(ext2_filsys fs, dgrp_t group);
+extern blk64_t ext2fs_group_last_block2(ext2_filsys fs, dgrp_t group);
+extern blk64_t ext2fs_inode_data_blocks2(ext2_filsys fs,
+					 struct ext2_inode *inode);
+extern blk64_t ext2fs_blocks_count(ext2_filsys fs);
+extern void ext2_blocks_count_set(ext2_filsys fs, blk64_t blk);
+extern blk64_t ext2_r_blocks_count(ext2_filsys fs);
+extern void ext2_r_blocks_count_set(ext2_filsys fs, blk64_t blk);
+extern blk64_t ext2_free_blocks_count(ext2_filsys fs);
+extern void ext2_free_blocks_count_set(ext2_filsys fs, blk64_t blk);
+extern blk64_t ext2_block_bitmap(ext2_filsys fs, dgrp_t group);
+extern void ext2_block_bitmap_set(ext2_filsys fs, dgrp_t group, blk_t blk);
+extern blk64_t ext2_inode_bitmap(ext2_filsys fs, dgrp_t group);
+extern void ext2_inode_bitmap_set(ext2_filsys fs, dgrp_t group, blk_t blk);
+extern blk64_t ext2_inode_table(ext2_filsys fs, dgrp_t group);
+extern void ext2_inode_table_set(ext2_filsys fs, dgrp_t group, blk_t blk);
 
 /* block.c */
 extern errcode_t ext2fs_block_iterate(ext2_filsys fs,

@@ -1281,10 +1299,8 @@ _INLINE_ int ext2fs_test_bb_dirty(ext2_filsys fs)
  */
 _INLINE_ int ext2fs_group_of_blk(ext2_filsys fs, blk_t blk)
 {
-	return (blk - fs->super->s_first_data_block) /
-		fs->super->s_blocks_per_group;
+	return ext2fs_group_of_blk2(fs, blk);
 }
-
 /*
  * Return the group # of an inode number
  */

@@ -1298,8 +1314,7 @@ _INLINE_ int ext2fs_group_of_ino(ext2_filsys fs, ext2_ino_t ino)
  */
 _INLINE_ blk_t ext2fs_group_first_block(ext2_filsys fs, dgrp_t group)
 {
-	return fs->super->s_first_data_block +
-		(group * fs->super->s_blocks_per_group);
+	return ext2fs_group_first_block2(fs, group);
 }
 
 /*

@@ -1307,17 +1322,13 @@ _INLINE_ blk_t ext2fs_group_first_block(ext2_filsys fs, dgrp_t group)
  */
 _INLINE_ blk_t ext2fs_group_last_block(ext2_filsys fs, dgrp_t group)
 {
-	return (group == fs->group_desc_count - 1 ?
-		fs->super->s_blocks_count - 1 :
-		ext2fs_group_first_block(fs, group) +
-			(fs->super->s_blocks_per_group - 1));
+	return ext2fs_group_last_block2(fs, group);
 }
 
 _INLINE_ blk_t ext2fs_inode_data_blocks(ext2_filsys fs,
 					struct ext2_inode *inode)
 {
-       return inode->i_blocks -
-              (inode->i_file_acl ? fs->blocksize >> 9 : 0);
+	return ext2fs_inode_data_blocks2(fs, inode);
 }
 
 /*

index 8bf99fb..4b9e1ce 100644
@@ -25,8 +25,8 @@ struct ext2_file {
 	struct ext2_inode	inode;
 	int 			flags;
 	__u64			pos;
-	blk_t			blockno;
-	blk_t			physblock;
+	blk64_t			blockno;
+	blk64_t			physblock;
 	char 			*buf;
 };
 

@@ -116,9 +116,9 @@ errcode_t ext2fs_file_flush(ext2_file_t file)
 	 * Allocate it.
 	 */
 	if (!file->physblock) {
-		retval = ext2fs_bmap(fs, file->ino, &file->inode,
+		retval = ext2fs_bmap2(fs, file->ino, &file->inode,
 				     BMAP_BUFFER, file->ino ? BMAP_ALLOC : 0,
-				     file->blockno, &file->physblock);
+				     file->blockno, 0, &file->physblock);
 		if (retval)
 			return retval;
 	}

@@ -168,8 +168,8 @@ static errcode_t load_buffer(ext2_file_t file, int dontfill)
 	errcode_t	retval;
 
 	if (!(file->flags & EXT2_FILE_BUF_VALID)) {
-		retval = ext2fs_bmap(fs, file->ino, &file->inode,
-				     BMAP_BUFFER, 0, file->blockno,
+		retval = ext2fs_bmap2(fs, file->ino, &file->inode,
+				     BMAP_BUFFER, 0, file->blockno, 0,
 				     &file->physblock);
 		if (retval)
 			return retval;

index fb20fa0..c45c6ce 100644
@@ -19,7 +19,7 @@
 #include "ext2_fs.h"
 #include "ext2fs.h"
 
-errcode_t ext2fs_read_dir_block2(ext2_filsys fs, blk_t block,
+errcode_t ext2fs_read_dir_block3(ext2_filsys fs, blk64_t block,
 				 void *buf, int flags EXT2FS_ATTR((unused)))
 {
 	errcode_t	retval;

@@ -28,7 +28,7 @@ errcode_t ext2fs_read_dir_block2(ext2_filsys fs, blk_t block,
 	unsigned int	name_len, rec_len;
 	
 
- 	retval = io_channel_read_blk(fs->io, block, 1, buf);
+	retval = io_channel_read_blk64(fs->io, block, 1, buf);
 	if (retval)
 		return retval;
 

@@ -58,14 +58,20 @@ errcode_t ext2fs_read_dir_block2(ext2_filsys fs, blk_t block,
 	return retval;
 }
 
+errcode_t ext2fs_read_dir_block2(ext2_filsys fs, blk_t block,
+				 void *buf, int flags EXT2FS_ATTR((unused)))
+{
+	return ext2fs_read_dir_block3(fs, block, buf, flags);
+}
+
 errcode_t ext2fs_read_dir_block(ext2_filsys fs, blk_t block,
 				 void *buf)
 {
-	return ext2fs_read_dir_block2(fs, block, buf, 0);
+	return ext2fs_read_dir_block3(fs, block, buf, 0);
 }
 
 
-errcode_t ext2fs_write_dir_block2(ext2_filsys fs, blk_t block,
+errcode_t ext2fs_write_dir_block3(ext2_filsys fs, blk64_t block,
 				  void *inbuf, int flags EXT2FS_ATTR((unused)))
 {
 #ifdef WORDS_BIGENDIAN

@@ -95,7 +101,7 @@ errcode_t ext2fs_write_dir_block2(ext2_filsys fs, blk_t block,
 		if (flags & EXT2_DIRBLOCK_V2_STRUCT)
 			dirent->name_len = ext2fs_swab16(dirent->name_len);
 	}
- 	retval = io_channel_write_blk(fs->io, block, 1, buf);
+	retval = io_channel_write_blk64(fs->io, block, 1, buf);
 	ext2fs_free_mem(&buf);
 	return retval;
 #else

@@ -103,10 +109,15 @@ errcode_t ext2fs_write_dir_block2(ext2_filsys fs, blk_t block,
 #endif
 }
 
+errcode_t ext2fs_write_dir_block2(ext2_filsys fs, blk_t block,
+				 void *inbuf, int flags EXT2FS_ATTR((unused)))
+{
+	return ext2fs_write_dir_block3(fs, block, inbuf, flags);
+}
 
 errcode_t ext2fs_write_dir_block(ext2_filsys fs, blk_t block,
 				 void *inbuf)
 {
-	return ext2fs_write_dir_block2(fs, block, inbuf, 0);
+	return ext2fs_write_dir_block3(fs, block, inbuf, 0);
 }
 

index 97abb3a..0043803 100644
@@ -770,10 +770,14 @@ extern errcode_t ext2fs_read_dir_block(ext2_filsys fs, blk_t block,
 				       void *buf);
 extern errcode_t ext2fs_read_dir_block2(ext2_filsys fs, blk_t block,
 					void *buf, int flags);
+extern errcode_t ext2fs_read_dir_block3(ext2_filsys fs, blk64_t block,
+					void *buf, int flags);
 extern errcode_t ext2fs_write_dir_block(ext2_filsys fs, blk_t block,
 					void *buf);
 extern errcode_t ext2fs_write_dir_block2(ext2_filsys fs, blk_t block,
 					 void *buf, int flags);
+extern errcode_t ext2fs_write_dir_block3(ext2_filsys fs, blk64_t block,
+					 void *buf, int flags);
 
 /* dirhash.c */
 extern errcode_t ext2fs_dirhash(int version, const char *name, int len,

index 3956528..2f1a8e7 100644
@@ -54,13 +54,15 @@ void ext2fs_inode_alloc_stats(ext2_filsys fs, ext2_ino_t ino, int inuse)
 	ext2fs_inode_alloc_stats2(fs, ino, inuse, 0);
 }
 
-void ext2fs_block_alloc_stats(ext2_filsys fs, blk_t blk, int inuse)
+void ext2fs_block_alloc_stats2(ext2_filsys fs, blk64_t blk, int inuse)
 {
-	int	group = ext2fs_group_of_blk(fs, blk);
+	int	group = ext2fs_group_of_blk2(fs, blk);
 
 	if (inuse > 0)
+		/* FIXME-64 */
 		ext2fs_mark_block_bitmap(fs->block_map, blk);
 	else
+		/* FIXME-64 */
 		ext2fs_unmark_block_bitmap(fs->block_map, blk);
 	fs->group_desc[group].bg_free_blocks_count -= inuse;
 	fs->group_desc[group].bg_flags &= ~EXT2_BG_BLOCK_UNINIT;

@@ -70,3 +72,8 @@ void ext2fs_block_alloc_stats(ext2_filsys fs, blk_t blk, int inuse)
 	ext2fs_mark_super_dirty(fs);
 	ext2fs_mark_bb_dirty(fs);
 }
+
+void ext2fs_block_alloc_stats(ext2_filsys fs, blk_t blk, int inuse)
+{
+	ext2fs_block_alloc_stats2(fs, blk, inuse);
+}

index 0043803..de32dd4 100644
@@ -554,6 +554,7 @@ void ext2fs_inode_alloc_stats(ext2_filsys fs, ext2_ino_t ino, int inuse);
 void ext2fs_inode_alloc_stats2(ext2_filsys fs, ext2_ino_t ino,
 			       int inuse, int isdir);
 void ext2fs_block_alloc_stats(ext2_filsys fs, blk_t blk, int inuse);
+void ext2fs_block_alloc_stats2(ext2_filsys fs, blk64_t blk, int inuse);
 
 /* alloc_tables.c */
 extern errcode_t ext2fs_allocate_tables(ext2_filsys fs);

index 65f3ea1..15d1039 100644
@@ -73,10 +73,10 @@ errcode_t ext2fs_new_inode(ext2_filsys fs, ext2_ino_t dir,
  * Stupid algorithm --- we now just search forward starting from the
  * goal.  Should put in a smarter one someday....
  */
-errcode_t ext2fs_new_block(ext2_filsys fs, blk_t goal,
-			   ext2fs_block_bitmap map, blk_t *ret)
+errcode_t ext2fs_new_block2(ext2_filsys fs, blk64_t goal,
+			   ext2fs_block_bitmap map, blk64_t *ret)
 {
-	blk_t	i;
+	blk64_t	i;
 
 	EXT2_CHECK_MAGIC(fs, EXT2_ET_MAGIC_EXT2FS_FILSYS);
 

@@ -88,6 +88,7 @@ errcode_t ext2fs_new_block(ext2_filsys fs, blk_t goal,
 		goal = fs->super->s_first_data_block;
 	i = goal;
 	do {
+		/* FIXME-64 */
 		if (!ext2fs_fast_test_block_bitmap(map, i)) {
 			*ret = i;
 			return 0;

@@ -99,15 +100,26 @@ errcode_t ext2fs_new_block(ext2_filsys fs, blk_t goal,
 	return EXT2_ET_BLOCK_ALLOC_FAIL;
 }
 
+errcode_t ext2fs_new_block(ext2_filsys fs, blk_t goal,
+			   ext2fs_block_bitmap map, blk_t *ret)
+{
+	errcode_t retval;
+	blk64_t val;
+	retval = ext2fs_new_block2(fs, goal, map, &val);
+	if (!retval)
+		*ret = (blk_t) val;
+	return retval;
+}
+
 /*
  * This function zeros out the allocated block, and updates all of the
  * appropriate filesystem records.
  */
-errcode_t ext2fs_alloc_block(ext2_filsys fs, blk_t goal,
-			     char *block_buf, blk_t *ret)
+errcode_t ext2fs_alloc_block2(ext2_filsys fs, blk64_t goal,
+			     char *block_buf, blk64_t *ret)
 {
 	errcode_t	retval;
-	blk_t		block;
+	blk64_t		block;
 	char		*buf = 0;
 
 	if (!block_buf) {

@@ -119,20 +131,21 @@ errcode_t ext2fs_alloc_block(ext2_filsys fs, blk_t goal,
 	memset(block_buf, 0, fs->blocksize);
 
 	if (!fs->block_map) {
+		/* FIXME-64 */
 		retval = ext2fs_read_block_bitmap(fs);
 		if (retval)
 			goto fail;
 	}
 
-	retval = ext2fs_new_block(fs, goal, 0, &block);
+	retval = ext2fs_new_block2(fs, goal, 0, &block);
 	if (retval)
 		goto fail;
 
-	retval = io_channel_write_blk(fs->io, block, 1, block_buf);
+	retval = io_channel_write_blk64(fs->io, block, 1, block_buf);
 	if (retval)
 		goto fail;
 	
-	ext2fs_block_alloc_stats(fs, block, +1);
+	ext2fs_block_alloc_stats2(fs, block, 1);
 	*ret = block;
 
 fail:

@@ -141,10 +154,21 @@ fail:
 	return retval;
 }
 
-errcode_t ext2fs_get_free_blocks(ext2_filsys fs, blk_t start, blk_t finish,
-				 int num, ext2fs_block_bitmap map, blk_t *ret)
+errcode_t ext2fs_alloc_block(ext2_filsys fs, blk_t goal,
+			     char *block_buf, blk_t *ret)
+{
+	errcode_t retval;
+	blk64_t	val;
+	retval = ext2fs_alloc_block2(fs, goal, block_buf, &val);
+	if (!retval)
+		*ret = (blk_t) val;
+	return retval;
+}
+
+errcode_t ext2fs_get_free_blocks2(ext2_filsys fs, blk64_t start, blk64_t finish,
+				 int num, ext2fs_block_bitmap map, blk64_t *ret)
 {
-	blk_t	b = start;
+	blk64_t	b = start;
 
 	EXT2_CHECK_MAGIC(fs, EXT2_ET_MAGIC_EXT2FS_FILSYS);
 

@@ -161,6 +185,7 @@ errcode_t ext2fs_get_free_blocks(ext2_filsys fs, blk_t start, blk_t finish,
 	do {
 		if (b+num-1 > fs->super->s_blocks_count)
 			b = fs->super->s_first_data_block;
+		/* FIXME-64 */
 		if (ext2fs_fast_test_block_bitmap_range(map, b, num)) {
 			*ret = b;
 			return 0;

@@ -170,3 +195,13 @@ errcode_t ext2fs_get_free_blocks(ext2_filsys fs, blk_t start, blk_t finish,
 	return EXT2_ET_BLOCK_ALLOC_FAIL;
 }
 
+errcode_t ext2fs_get_free_blocks(ext2_filsys fs, blk_t start, blk_t finish,
+				 int num, ext2fs_block_bitmap map, blk_t *ret)
+{
+	errcode_t retval;
+	blk64_t val;
+	retval = ext2fs_get_free_blocks2(fs, start, finish, num, map, &val);
+	if(!retval)
+		*ret = (blk_t) val;
+	return retval;
+}

index de32dd4..00d1334 100644
@@ -537,12 +537,20 @@ extern errcode_t ext2fs_new_inode(ext2_filsys fs, ext2_ino_t dir, int mode,
 				  ext2fs_inode_bitmap map, ext2_ino_t *ret);
 extern errcode_t ext2fs_new_block(ext2_filsys fs, blk_t goal,
 				  ext2fs_block_bitmap map, blk_t *ret);
+extern errcode_t ext2fs_new_block2(ext2_filsys fs, blk64_t goal,
+				  ext2fs_block_bitmap map, blk64_t *ret);
 extern errcode_t ext2fs_get_free_blocks(ext2_filsys fs, blk_t start,
 					blk_t finish, int num,
 					ext2fs_block_bitmap map,
 					blk_t *ret);
+extern errcode_t ext2fs_get_free_blocks2(ext2_filsys fs, blk64_t start,
+					blk64_t finish, int num,
+					ext2fs_block_bitmap map,
+					blk64_t *ret);
 extern errcode_t ext2fs_alloc_block(ext2_filsys fs, blk_t goal,
 				    char *block_buf, blk_t *ret);
+extern errcode_t ext2fs_alloc_block2(ext2_filsys fs, blk64_t goal,
+				    char *block_buf, blk64_t *ret);
 
 /* alloc_sb.c */
 extern int ext2fs_reserve_super_and_bgd(ext2_filsys fs, 

index f8d8a5f..38db123 100644
@@ -73,10 +73,10 @@ errcode_t ext2fs_new_inode(ext2_filsys fs, ext2_ino_t dir,
  * Stupid algorithm --- we now just search forward starting from the
  * goal.  Should put in a smarter one someday....
  */
-errcode_t ext2fs_new_block(ext2_filsys fs, blk_t goal,
-			   ext2fs_block_bitmap map, blk_t *ret)
+errcode_t ext2fs_new_block2(ext2_filsys fs, blk64_t goal,
+			   ext2fs_block_bitmap map, blk64_t *ret)
 {
-	blk_t	i;
+	blk64_t	i;
 
 	EXT2_CHECK_MAGIC(fs, EXT2_ET_MAGIC_EXT2FS_FILSYS);
 

@@ -88,6 +88,7 @@ errcode_t ext2fs_new_block(ext2_filsys fs, blk_t goal,
 		goal = fs->super->s_first_data_block;
 	i = goal;
 	do {
+		/* FIXME-64 */
 		if (!ext2fs_fast_test_block_bitmap(map, i)) {
 			*ret = i;
 			return 0;

@@ -99,15 +100,26 @@ errcode_t ext2fs_new_block(ext2_filsys fs, blk_t goal,
 	return EXT2_ET_BLOCK_ALLOC_FAIL;
 }
 
+errcode_t ext2fs_new_block(ext2_filsys fs, blk_t goal,
+			   ext2fs_block_bitmap map, blk_t *ret)
+{
+	errcode_t retval;
+	blk64_t val;
+	retval = ext2fs_new_block2(fs, goal, map, &val);
+	if (!retval)
+		*ret = (blk_t) val;
+	return retval;
+}
+
 /*
  * This function zeros out the allocated block, and updates all of the
  * appropriate filesystem records.
  */
-errcode_t ext2fs_alloc_block(ext2_filsys fs, blk_t goal,
-			     char *block_buf, blk_t *ret)
+errcode_t ext2fs_alloc_block2(ext2_filsys fs, blk64_t goal,
+			     char *block_buf, blk64_t *ret)
 {
 	errcode_t	retval;
-	blk_t		block;
+	blk64_t		block;
 	char		*buf = 0;
 
 	if (!block_buf) {

@@ -119,29 +131,27 @@ errcode_t ext2fs_alloc_block(ext2_filsys fs, blk_t goal,
 	memset(block_buf, 0, fs->blocksize);
 
 	if (fs->get_alloc_block) {
-		blk64_t	new;
-
-		retval = (fs->get_alloc_block)(fs, (blk64_t) goal, &new);
+		retval = (fs->get_alloc_block)(fs, goal, &block);
 		if (retval)
 			goto fail;
-		block = (blk_t) new;
 	} else {
 		if (!fs->block_map) {
+			/* FIXME-64 */
 			retval = ext2fs_read_block_bitmap(fs);
 			if (retval)
 				goto fail;
 		}
 
-		retval = ext2fs_new_block(fs, goal, 0, &block);
+		retval = ext2fs_new_block2(fs, goal, 0, &block);
 		if (retval)
 			goto fail;
 	}
 
-	retval = io_channel_write_blk(fs->io, block, 1, block_buf);
+	retval = io_channel_write_blk64(fs->io, block, 1, block_buf);
 	if (retval)
 		goto fail;
 	
-	ext2fs_block_alloc_stats(fs, block, +1);
+	ext2fs_block_alloc_stats2(fs, block, +1);
 	*ret = block;
 
 fail:

@@ -150,10 +160,21 @@ fail:
 	return retval;
 }
 
-errcode_t ext2fs_get_free_blocks(ext2_filsys fs, blk_t start, blk_t finish,
-				 int num, ext2fs_block_bitmap map, blk_t *ret)
+errcode_t ext2fs_alloc_block(ext2_filsys fs, blk_t goal,
+			     char *block_buf, blk_t *ret)
+{
+	errcode_t retval;
+	blk64_t	val;
+	retval = ext2fs_alloc_block2(fs, goal, block_buf, &val);
+	if (!retval)
+		*ret = (blk_t) val;
+	return retval;
+}
+
+errcode_t ext2fs_get_free_blocks2(ext2_filsys fs, blk64_t start, blk64_t finish,
+				 int num, ext2fs_block_bitmap map, blk64_t *ret)
 {
-	blk_t	b = start;
+	blk64_t	b = start;
 
 	EXT2_CHECK_MAGIC(fs, EXT2_ET_MAGIC_EXT2FS_FILSYS);
 

@@ -170,6 +191,7 @@ errcode_t ext2fs_get_free_blocks(ext2_filsys fs, blk_t start, blk_t finish,
 	do {
 		if (b+num-1 > fs->super->s_blocks_count)
 			b = fs->super->s_first_data_block;
+		/* FIXME-64 */
 		if (ext2fs_fast_test_block_bitmap_range(map, b, num)) {
 			*ret = b;
 			return 0;

@@ -179,6 +201,17 @@ errcode_t ext2fs_get_free_blocks(ext2_filsys fs, blk_t start, blk_t finish,
 	return EXT2_ET_BLOCK_ALLOC_FAIL;
 }
 
+errcode_t ext2fs_get_free_blocks(ext2_filsys fs, blk_t start, blk_t finish,
+				 int num, ext2fs_block_bitmap map, blk_t *ret)
+{
+	errcode_t retval;
+	blk64_t val;
+	retval = ext2fs_get_free_blocks2(fs, start, finish, num, map, &val);
+	if(!retval)
+		*ret = (blk_t) val;
+	return retval;
+}
+
 void ext2fs_set_alloc_block_callback(ext2_filsys fs, 
 				     errcode_t (*func)(ext2_filsys fs,
 						       blk64_t goal,

index e256a97..32e17e0 100644
@@ -554,12 +554,20 @@ extern errcode_t ext2fs_new_inode(ext2_filsys fs, ext2_ino_t dir, int mode,
 				  ext2fs_inode_bitmap map, ext2_ino_t *ret);
 extern errcode_t ext2fs_new_block(ext2_filsys fs, blk_t goal,
 				  ext2fs_block_bitmap map, blk_t *ret);
+extern errcode_t ext2fs_new_block2(ext2_filsys fs, blk64_t goal,
+				   ext2fs_block_bitmap map, blk64_t *ret);
 extern errcode_t ext2fs_get_free_blocks(ext2_filsys fs, blk_t start,
 					blk_t finish, int num,
 					ext2fs_block_bitmap map,
 					blk_t *ret);
+extern errcode_t ext2fs_get_free_blocks2(ext2_filsys fs, blk64_t start,
+					 blk64_t finish, int num,
+					 ext2fs_block_bitmap map,
+					 blk64_t *ret);
 extern errcode_t ext2fs_alloc_block(ext2_filsys fs, blk_t goal,
 				    char *block_buf, blk_t *ret);
+extern errcode_t ext2fs_alloc_block2(ext2_filsys fs, blk64_t goal,
+				     char *block_buf, blk64_t *ret);
 extern void ext2fs_set_alloc_block_callback(ext2_filsys fs, 
 					    errcode_t (*func)(ext2_filsys fs,
 							      blk64_t goal,

index 00d1334..511b9e3 100644
@@ -829,11 +829,18 @@ extern errcode_t ext2fs_expand_dir(ext2_filsys fs, ext2_ino_t dir);
 extern __u32 ext2fs_ext_attr_hash_entry(struct ext2_ext_attr_entry *entry,
 					void *data);
 extern errcode_t ext2fs_read_ext_attr(ext2_filsys fs, blk_t block, void *buf);
+extern errcode_t ext2fs_read_ext_attr2(ext2_filsys fs, blk64_t block,
+				       void *buf);
 extern errcode_t ext2fs_write_ext_attr(ext2_filsys fs, blk_t block,
 				       void *buf);
+extern errcode_t ext2fs_write_ext_attr2(ext2_filsys fs, blk64_t block,
+				       void *buf);
 extern errcode_t ext2fs_adjust_ea_refcount(ext2_filsys fs, blk_t blk,
 					   char *block_buf,
 					   int adjust, __u32 *newcount);
+extern errcode_t ext2fs_adjust_ea_refcount2(ext2_filsys fs, blk64_t blk,
+					   char *block_buf,
+					   int adjust, __u32 *newcount);
 
 /* extent.c */
 extern errcode_t ext2fs_extent_header_verify(void *ptr, int size);

index 3d208ec..395d4c7 100644
@@ -60,11 +60,11 @@ __u32 ext2fs_ext_attr_hash_entry(struct ext2_ext_attr_entry *entry, void *data)
 #undef NAME_HASH_SHIFT
 #undef VALUE_HASH_SHIFT
 
-errcode_t ext2fs_read_ext_attr(ext2_filsys fs, blk_t block, void *buf)
+errcode_t ext2fs_read_ext_attr2(ext2_filsys fs, blk64_t block, void *buf)
 {
 	errcode_t	retval;
 
- 	retval = io_channel_read_blk(fs->io, block, 1, buf);
+	retval = io_channel_read_blk64(fs->io, block, 1, buf);
 	if (retval)
 		return retval;
 #ifdef WORDS_BIGENDIAN

@@ -73,7 +73,12 @@ errcode_t ext2fs_read_ext_attr(ext2_filsys fs, blk_t block, void *buf)
 	return 0;
 }
 
-errcode_t ext2fs_write_ext_attr(ext2_filsys fs, blk_t block, void *inbuf)
+errcode_t ext2fs_read_ext_attr(ext2_filsys fs, blk_t block, void *buf)
+{
+	return ext2fs_read_ext_attr2(fs, block, buf);
+}
+
+errcode_t ext2fs_write_ext_attr2(ext2_filsys fs, blk64_t block, void *inbuf)
 {
 	errcode_t	retval;
 	char		*write_buf;

@@ -88,7 +93,7 @@ errcode_t ext2fs_write_ext_attr(ext2_filsys fs, blk_t block, void *inbuf)
 #else
 	write_buf = (char *) inbuf;
 #endif
- 	retval = io_channel_write_blk(fs->io, block, 1, write_buf);
+	retval = io_channel_write_blk64(fs->io, block, 1, write_buf);
 	if (buf)
 		ext2fs_free_mem(&buf);
 	if (!retval)

@@ -96,10 +101,15 @@ errcode_t ext2fs_write_ext_attr(ext2_filsys fs, blk_t block, void *inbuf)
 	return retval;
 }
 
+errcode_t ext2fs_write_ext_attr(ext2_filsys fs, blk_t block, void *inbuf)
+{
+	return ext2fs_write_ext_attr2(fs, block, inbuf);
+}
+
 /*
  * This function adjusts the reference count of the EA block.
  */
-errcode_t ext2fs_adjust_ea_refcount(ext2_filsys fs, blk_t blk,
+errcode_t ext2fs_adjust_ea_refcount2(ext2_filsys fs, blk64_t blk,
 				    char *block_buf, int adjust,
 				    __u32 *newcount)
 {

@@ -118,7 +128,7 @@ errcode_t ext2fs_adjust_ea_refcount(ext2_filsys fs, blk_t blk,
 		block_buf = buf;
 	}
 
-	retval = ext2fs_read_ext_attr(fs, blk, block_buf);
+	retval = ext2fs_read_ext_attr2(fs, blk, block_buf);
 	if (retval)
 		goto errout;
 

@@ -127,7 +137,7 @@ errcode_t ext2fs_adjust_ea_refcount(ext2_filsys fs, blk_t blk,
 	if (newcount)
 		*newcount = header->h_refcount;
 
-	retval = ext2fs_write_ext_attr(fs, blk, block_buf);
+	retval = ext2fs_write_ext_attr2(fs, blk, block_buf);
 	if (retval)
 		goto errout;
 

@@ -136,3 +146,10 @@ errout:
 		ext2fs_free_mem(&buf);
 	return retval;
 }
+
+errcode_t ext2fs_adjust_ea_refcount(ext2_filsys fs, blk_t blk,
+					char *block_buf, int adjust,
+					__u32 *newcount)
+{
+	return ext2fs_adjust_ea_refcount(fs, blk, block_buf, adjust, newcount);
+}

index 206faa6..8231ca6 100644
@@ -46,31 +46,33 @@ int ext2fs_bg_has_super(ext2_filsys fs, int group_block)
 }
 
 /*
- * This function returns the location of the superblock, block group
- * descriptors for a given block group.  It currently returns the
- * number of free blocks assuming that inode table and allocation
- * bitmaps will be in the group.  This is not necessarily the case
- * when the flex_bg feature is enabled, so callers should take care!
- * It was only really intended for use by mke2fs, and even there it's
- * not that useful.  In the future, when we redo this function for
- * 64-bit block numbers, we should probably return the number of
- * blocks used by the super block and group descriptors instead.
+ * ext2fs_super_and_bgd_loc2()
+ * @fs:			ext2 fs pointer
+ * @group		given block group
+ * @ret_super_blk:	if !NULL, returns super block location
+ * @ret_old_desc_blk:	if !NULL, returns location of the old block
+ *			group descriptor
+ * @ret_new_desc_blk:	if !NULL, returns location of meta_bg block
+ *			group descriptor
+ * @ret_used_blks:	if !NULL, returns number of blocks used by
+ *			super block and group_descriptors.
  *
- * See also the comment for ext2fs_reserve_super_and_bgd()
+ * Returns errcode_t of 0
  */
-int ext2fs_super_and_bgd_loc(ext2_filsys fs, 
-			     dgrp_t group,
-			     blk_t *ret_super_blk,
-			     blk_t *ret_old_desc_blk,
-			     blk_t *ret_new_desc_blk,
-			     int *ret_meta_bg)
+errcode_t ext2fs_super_and_bgd_loc2(ext2_filsys fs,
+					   dgrp_t group,
+					   blk64_t *ret_super_blk,
+					   blk64_t *ret_old_desc_blk,
+					   blk64_t *ret_new_desc_blk,
+					   blk_t *ret_used_blks)
 {
-	blk_t	group_block, super_blk = 0, old_desc_blk = 0, new_desc_blk = 0;
+	blk64_t	group_block, super_blk = 0, old_desc_blk = 0, new_desc_blk = 0;
 	unsigned int meta_bg, meta_bg_size;
-	blk_t	numblocks, old_desc_blocks;
+	blk_t	numblocks = 0;
+	blk64_t old_desc_blocks;
 	int	has_super;
 
-	group_block = ext2fs_group_first_block(fs, group);
+	group_block = ext2fs_group_first_block2(fs, group);
 
 	if (fs->super->s_feature_incompat & EXT2_FEATURE_INCOMPAT_META_BG)
 		old_desc_blocks = fs->super->s_first_meta_bg;

@@ -78,20 +80,11 @@ int ext2fs_super_and_bgd_loc(ext2_filsys fs,
 		old_desc_blocks = 
 			fs->desc_blocks + fs->super->s_reserved_gdt_blocks;
 
-	if (group == fs->group_desc_count-1) {
-		numblocks = (fs->super->s_blocks_count -
-			     fs->super->s_first_data_block) %
-			fs->super->s_blocks_per_group;
-		if (!numblocks)
-			numblocks = fs->super->s_blocks_per_group;
-	} else
-		numblocks = fs->super->s_blocks_per_group;
-
 	has_super = ext2fs_bg_has_super(fs, group);
 
 	if (has_super) {
 		super_blk = group_block;
-		numblocks--;
+		numblocks++;
 	}
 	meta_bg_size = EXT2_DESC_PER_BLOCK(fs->super);
 	meta_bg = group / meta_bg_size;

@@ -100,7 +93,7 @@ int ext2fs_super_and_bgd_loc(ext2_filsys fs,
 	    (meta_bg < fs->super->s_first_meta_bg)) {
 		if (has_super) {
 			old_desc_blk = group_block + 1;
-			numblocks -= old_desc_blocks;
+			numblocks += old_desc_blocks;
 		}
 	} else {
 		if (((group % meta_bg_size) == 0) ||

@@ -109,11 +102,9 @@ int ext2fs_super_and_bgd_loc(ext2_filsys fs,
 			if (has_super)
 				has_super = 1;
 			new_desc_blk = group_block + has_super;
-			numblocks--;
+			numblocks++;
 		}
 	}
-		
-	numblocks -= 2 + fs->inode_blocks_per_group;
 
 	if (ret_super_blk)
 		*ret_super_blk = super_blk;

@@ -121,11 +112,68 @@ int ext2fs_super_and_bgd_loc(ext2_filsys fs,
 		*ret_old_desc_blk = old_desc_blk;
 	if (ret_new_desc_blk)
 		*ret_new_desc_blk = new_desc_blk;
-	if (ret_meta_bg)
-		*ret_meta_bg = meta_bg;
-	return (numblocks);
+	if (ret_used_blks)
+		*ret_used_blks = numblocks;
+
+	return 0;
 }
 
+/*
+ * This function returns the location of the superblock, block group
+ * descriptors for a given block group.  It currently returns the
+ * number of free blocks assuming that inode table and allocation
+ * bitmaps will be in the group.  This is not necessarily the case
+ * when the flex_bg feature is enabled, so callers should take care!
+ * It was only really intended for use by mke2fs, and even there it's
+ * not that useful.
+ *
+ * The ext2fs_super_and_bgd_loc2() function is 64-bit block number
+ * capable and returns the number of blocks used by super block and
+ * group descriptors.
+ */
+int ext2fs_super_and_bgd_loc(ext2_filsys fs,
+			     dgrp_t group,
+			     blk_t *ret_super_blk,
+			     blk_t *ret_old_desc_blk,
+			     blk_t *ret_new_desc_blk,
+			     int *ret_meta_bg)
+{
+	blk64_t ret_super_blk2;
+	blk64_t ret_old_desc_blk2;
+	blk64_t ret_new_desc_blk2;
+	blk_t ret_used_blks;
+	blk_t numblocks;
+	unsigned int meta_bg_size;
+
+	ext2fs_super_and_bgd_loc2(fs, group, &ret_super_blk2,
+					&ret_old_desc_blk2,
+					&ret_new_desc_blk2,
+					&ret_used_blks);
+
+	if (group == fs->group_desc_count-1) {
+		numblocks = (fs->super->s_blocks_count -
+			     fs->super->s_first_data_block) %
+			fs->super->s_blocks_per_group;
+		if (!numblocks)
+			numblocks = fs->super->s_blocks_per_group;
+	} else
+		numblocks = fs->super->s_blocks_per_group;
+
+	if (ret_super_blk)
+		*ret_super_blk = (blk_t)ret_super_blk2;
+	if (ret_old_desc_blk)
+		*ret_old_desc_blk = (blk_t)ret_old_desc_blk2;
+	if (ret_new_desc_blk)
+		*ret_new_desc_blk = (blk_t)ret_new_desc_blk2;
+	if (ret_meta_bg) {
+		meta_bg_size = EXT2_DESC_PER_BLOCK(fs->super);
+		*ret_meta_bg = group / meta_bg_size;
+	}
+
+	numblocks -= 2 + fs->inode_blocks_per_group + ret_used_blks;
+
+	return numblocks;
+}
 
 /*
  * This function forces out the primary superblock.  We need to only

index 511b9e3..2e1de10 100644
@@ -725,6 +725,12 @@ extern errcode_t ext2fs_check_desc(ext2_filsys fs);
 extern errcode_t ext2fs_close(ext2_filsys fs);
 extern errcode_t ext2fs_flush(ext2_filsys fs);
 extern int ext2fs_bg_has_super(ext2_filsys fs, int group_block);
+extern errcode_t ext2fs_super_and_bgd_loc2(ext2_filsys fs,
+				    dgrp_t group,
+				    blk64_t *ret_super_blk,
+				    blk64_t *ret_old_desc_blk,
+				    blk64_t *ret_new_desc_blk,
+				    blk_t *ret_used_blks);
 extern int ext2fs_super_and_bgd_loc(ext2_filsys fs, 
 				    dgrp_t group,
 				    blk_t *ret_super_blk,

index cc17820..a729308 100644
@@ -111,7 +111,8 @@ static void print_bitmap_problem(e2fsck_t ctx, int problem,
 static void check_block_bitmaps(e2fsck_t ctx)
 {
 	ext2_filsys fs = ctx->fs;
-	blk_t	i, super;
+	blk64_t	i;
+	blk_t   super;
 	int	*free_array;
 	int	group = 0;
 	blk_t	blocks = 0;

@@ -174,10 +175,10 @@ redo_counts:
 		actual = ext2fs_fast_test_block_bitmap(ctx->block_found_map, i);
 
 		if (skip_group) {
-			blk_t	super_blk, old_desc_blk, new_desc_blk;
+			blk64_t	super_blk, old_desc_blk, new_desc_blk;
 			int	old_desc_blocks;
 
-			ext2fs_super_and_bgd_loc(fs, group, &super_blk,
+			ext2fs_super_and_bgd_loc2(fs, group, &super_blk,
 					 &old_desc_blk, &new_desc_blk, 0);
 
 			if (fs->super->s_feature_incompat &

index 200ce5c..00cc5b0 100644
@@ -44,11 +44,12 @@ int ext2fs_reserve_super_and_bgd(ext2_filsys fs,
 				 dgrp_t group,
 				 ext2fs_block_bitmap bmap)
 {
-	blk_t	super_blk, old_desc_blk, new_desc_blk;
+	blk64_t	super_blk, old_desc_blk, new_desc_blk;
+	blk_t	used_blks;
 	int	j, old_desc_blocks, num_blocks;
 
-	num_blocks = ext2fs_super_and_bgd_loc(fs, group, &super_blk, 
-					      &old_desc_blk, &new_desc_blk, 0);
+	ext2fs_super_and_bgd_loc2(fs, group, &super_blk,
+				  &old_desc_blk, &new_desc_blk, &used_blks);
 
 	if (fs->super->s_feature_incompat & EXT2_FEATURE_INCOMPAT_META_BG)
 		old_desc_blocks = fs->super->s_first_meta_bg;

@@ -57,16 +58,30 @@ int ext2fs_reserve_super_and_bgd(ext2_filsys fs,
 			fs->desc_blocks + fs->super->s_reserved_gdt_blocks;
 
 	if (super_blk || (group == 0))
+		/* FIXME-64 */
 		ext2fs_mark_block_bitmap(bmap, super_blk);
 
 	if (old_desc_blk) {
 		if (fs->super->s_reserved_gdt_blocks && fs->block_map == bmap)
 			fs->group_desc[group].bg_flags &= ~EXT2_BG_BLOCK_UNINIT;
 		for (j=0; j < old_desc_blocks; j++)
+			/* FIXME-64 */
 			ext2fs_mark_block_bitmap(bmap, old_desc_blk + j);
 	}
 	if (new_desc_blk)
+		/* FIXME-64 */
 		ext2fs_mark_block_bitmap(bmap, new_desc_blk);
 
-	return num_blocks;
+	if (group == fs->group_desc_count-1) {
+		num_blocks = (fs->super->s_blocks_count -
+			     fs->super->s_first_data_block) %
+			fs->super->s_blocks_per_group;
+		if (!num_blocks)
+			num_blocks = fs->super->s_blocks_per_group;
+	} else
+		num_blocks = fs->super->s_blocks_per_group;
+
+	num_blocks -= 2 + fs->inode_blocks_per_group + used_blks;
+
+	return num_blocks  ;
 }

index 8231ca6..b61556e 100644
@@ -338,11 +338,10 @@ errcode_t ext2fs_flush(ext2_filsys fs)
 		old_desc_blocks = fs->desc_blocks;
 
 	for (i = 0; i < fs->group_desc_count; i++) {
-		blk_t	super_blk, old_desc_blk, new_desc_blk;
-		int	meta_bg;
+		blk64_t	super_blk, old_desc_blk, new_desc_blk;
 
-		ext2fs_super_and_bgd_loc(fs, i, &super_blk, &old_desc_blk, 
-					 &new_desc_blk, &meta_bg);
+		ext2fs_super_and_bgd_loc2(fs, i, &super_blk, &old_desc_blk,
+					 &new_desc_blk, 0);
 
 		if (!(fs->flags & EXT2_FLAG_MASTER_SB_ONLY) &&i && super_blk) {
 			retval = write_backup_super(fs, i, super_blk,

@@ -360,6 +359,8 @@ errcode_t ext2fs_flush(ext2_filsys fs)
 				goto errout;
 		}
 		if (new_desc_blk) {
+			int meta_bg = i / EXT2_DESC_PER_BLOCK(fs->super);
+
 			retval = io_channel_write_blk(fs->io, new_desc_blk,
 				1, group_ptr + (meta_bg*fs->blocksize));
 			if (retval)

index 2e1de10..3b7c3ed 100644
@@ -1078,6 +1078,8 @@ extern errcode_t ext2fs_open2(const char *name, const char *io_options,
 			      int flags, int superblock, 
 			      unsigned int block_size, io_manager manager,
 			      ext2_filsys *ret_fs);
+extern blk64_t ext2fs_descriptor_block_loc2(ext2_filsys fs,
+					blk64_t group_block, dgrp_t i);
 extern blk_t ext2fs_descriptor_block_loc(ext2_filsys fs, blk_t group_block, 
 					 dgrp_t i);
 errcode_t ext2fs_get_data_io(ext2_filsys fs, io_channel *old_io);

index fc54afe..6b365b7 100644
@@ -29,11 +29,12 @@
 #include "ext2fs.h"
 #include "e2image.h"
 
-blk_t ext2fs_descriptor_block_loc(ext2_filsys fs, blk_t group_block, dgrp_t i)
+blk64_t ext2fs_descriptor_block_loc2(ext2_filsys fs, blk64_t group_block,
+				     dgrp_t i)
 {
 	int	bg;
 	int	has_super = 0;
-	int	ret_blk;
+	blk64_t	ret_blk;
 
 	if (!(fs->super->s_feature_incompat & EXT2_FEATURE_INCOMPAT_META_BG) ||
 	    (i < fs->super->s_first_meta_bg))

@@ -42,7 +43,7 @@ blk_t ext2fs_descriptor_block_loc(ext2_filsys fs, blk_t group_block, dgrp_t i)
 	bg = EXT2_DESC_PER_BLOCK(fs->super) * i;
 	if (ext2fs_bg_has_super(fs, bg))
 		has_super = 1;
-	ret_blk = ext2fs_group_first_block(fs, bg) + has_super;
+	ret_blk = ext2fs_group_first_block2(fs, bg) + has_super;
 	/*
 	 * If group_block is not the normal value, we're trying to use
 	 * the backup group descriptors and superblock --- so use the

@@ -58,6 +59,11 @@ blk_t ext2fs_descriptor_block_loc(ext2_filsys fs, blk_t group_block, dgrp_t i)
 	return ret_blk;
 }
 
+blk_t ext2fs_descriptor_block_loc(ext2_filsys fs, blk_t group_block, dgrp_t i)
+{
+	return ext2fs_descriptor_block_loc2(fs, group_block, i);
+}
+
 errcode_t ext2fs_open(const char *name, int flags, int superblock,
 		      unsigned int block_size, io_manager manager, 
 		      ext2_filsys *ret_fs)