[PATCH 07/15][e2fsprogs] Add 64-bit alloc interface.

Jose R. Santos
2008-07-15T16:50:46Z

From: Jose R. Santos <jrs@us.ibm.com>

Add 64-bit alloc interface.

Add new ext2fs_new_block2(), ext2fs_get_free_blocks2() and
ext2fs_alloc_block2() that take and return blk64_t.

Signed-off-by: Jose R. Santos <jrs@us.ibm.com>
--

lib/ext2fs/alloc.c | 70 ++++++++++++++++++++++++++++++++++++++-------------
lib/ext2fs/ext2fs.h | 8 ++++++
2 files changed, 60 insertions(+), 18 deletions(-)

diff --git a/lib/ext2fs/alloc.c b/lib/ext2fs/alloc.c
index f8d8a5f..411e934 100644
--- a/lib/ext2fs/alloc.c
+++ b/lib/ext2fs/alloc.c
@@ -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);

@@ -88,7 +88,8 @@ errcode_t ext2fs_new_block(ext2_filsys fs, blk_t goal,
goal = fs->super->s_first_data_block;
i = goal;
do {
- if (!ext2fs_fast_test_block_bitmap(map, i)) {
+ /* FIXME-64 */
+ if (!ext2fs_fast_test_block_bitmap(map, (blk_t) 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);

@@ -170,7 +191,9 @@ 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;
- if (ext2fs_fast_test_block_bitmap_range(map, b, num)) {
+ /* FIXME-64 */
+ if (ext2fs_fast_test_block_bitmap_range(map, (blk_t) b,
+ (blk_t) num)) {
*ret = b;
return 0;
}
@@ -179,6 +202,17 @@ 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,
diff --git a/lib/ext2fs/ext2fs.h b/lib/ext2fs/ext2fs.h
index fd5b69a..66073e8 100644
--- a/lib/ext2fs/ext2fs.h
+++ b/lib/ext2fs/ext2fs.h
@@ -555,12 +555,20 @@ 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,