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https://git.kernel.org/pub/scm/linux/kernel/git/kdave/btrfs-progs.git
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36da47b409
Commit 324d4c1857 (btrfs-progs: convert: Add larger device support)
introduced new dependencies on the 64-bit API provided by e2fsprogs.
That API was introduced in v1.42 (along with bigalloc).
This patch maps the following to their equivalents in e2fsprogs < 1.42.
- ext2fs_get_block_bitmap_range2
- ext2fs_inode_data_blocks2
- ext2fs_read_ext_attr2
Since we need to detect and define EXT2_FLAG_64BITS for compatibilty
anyway, it makes sense to use that to detect the older e2fsprogs instead
of defining a new flag ourselves.
Signed-off-by: Jeff Mahoney <jeffm@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
82 lines
2.6 KiB
C
82 lines
2.6 KiB
C
/*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public
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* License v2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public
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* License along with this program; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 021110-1307, USA.
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*/
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#ifndef __BTRFS_CONVERT_SOURCE_EXT2_H__
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#define __BTRFS_CONVERT_SOURCE_EXT2_H__
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#if BTRFSCONVERT_EXT2
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#include "kerncompat.h"
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#include <ext2fs/ext2_fs.h>
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#include <ext2fs/ext2fs.h>
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#include <ext2fs/ext2_ext_attr.h>
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#include "convert/source-fs.h"
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#define INO_OFFSET (BTRFS_FIRST_FREE_OBJECTID - EXT2_ROOT_INO)
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/*
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* Compatibility code for e2fsprogs 1.41 which doesn't support RO compat flag
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* BIGALLOC.
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* Unlike normal RO compat flag, BIGALLOC affects how e2fsprogs check used
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* space, and btrfs-convert heavily relies on it.
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*
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* e2fsprogs 1.42 also introduced the 64-bit API. Any file system
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* that requires it will have EXT4_FEATURE_INCOMPAT_64BIT set and
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* will fail to open with earlier releases. We can map it to the
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* older API without risk of corruption.
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*/
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#ifndef EXT2_FLAG_64BITS
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#define EXT2_FLAG_64BITS (0)
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#define ext2fs_get_block_bitmap_range2 ext2fs_get_block_bitmap_range
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#define ext2fs_inode_data_blocks2 ext2fs_inode_data_blocks
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#define ext2fs_read_ext_attr2 ext2fs_read_ext_attr
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#define ext2fs_blocks_count(s) ((s)->s_blocks_count)
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#define EXT2FS_CLUSTER_RATIO(fs) (1)
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#define EXT2_CLUSTERS_PER_GROUP(s) (EXT2_BLOCKS_PER_GROUP(s))
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#define EXT2FS_B2C(fs, blk) (blk)
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#endif
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/*
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* Following xattr/acl related codes are based on codes in
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* fs/ext3/xattr.c and fs/ext3/acl.c
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*/
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#define EXT2_XATTR_BHDR(ptr) ((struct ext2_ext_attr_header *)(ptr))
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#define EXT2_XATTR_BFIRST(ptr) \
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((struct ext2_ext_attr_entry *)(EXT2_XATTR_BHDR(ptr) + 1))
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#define EXT2_XATTR_IHDR(inode) \
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((struct ext2_ext_attr_header *) ((void *)(inode) + \
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EXT2_GOOD_OLD_INODE_SIZE + (inode)->i_extra_isize))
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#define EXT2_XATTR_IFIRST(inode) \
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((struct ext2_ext_attr_entry *) ((void *)EXT2_XATTR_IHDR(inode) + \
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sizeof(EXT2_XATTR_IHDR(inode)->h_magic)))
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struct dir_iterate_data {
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struct btrfs_trans_handle *trans;
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struct btrfs_root *root;
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struct btrfs_inode_item *inode;
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u64 objectid;
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u64 index_cnt;
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u64 parent;
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int errcode;
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};
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#define EXT2_ACL_VERSION 0x0001
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#endif /* BTRFSCONVERT_EXT2 */
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#endif
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