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Diffstat (limited to 'convert/source-ext2.h')
-rw-r--r-- | convert/source-ext2.h | 113 |
1 files changed, 113 insertions, 0 deletions
diff --git a/convert/source-ext2.h b/convert/source-ext2.h new file mode 100644 index 00000000..20a278ed --- /dev/null +++ b/convert/source-ext2.h @@ -0,0 +1,113 @@ +/* + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public + * License v2 as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public + * License along with this program; if not, write to the + * Free Software Foundation, Inc., 59 Temple Place - Suite 330, + * Boston, MA 021110-1307, USA. + */ + +#ifndef __BTRFS_CONVERT_SOURCE_EXT2_H__ +#define __BTRFS_CONVERT_SOURCE_EXT2_H__ + +#if BTRFSCONVERT_EXT2 + +#include "kerncompat.h" + +#include <ext2fs/ext2_fs.h> +#include <ext2fs/ext2fs.h> +#include <ext2fs/ext2_ext_attr.h> +#include "convert/source-fs.h" + +#define INO_OFFSET (BTRFS_FIRST_FREE_OBJECTID - EXT2_ROOT_INO) + +/* + * Compatibility code for e2fsprogs 1.41 which doesn't support RO compat flag + * BIGALLOC. + * Unlike normal RO compat flag, BIGALLOC affects how e2fsprogs check used + * space, and btrfs-convert heavily relies on it. + */ +#ifdef HAVE_OLD_E2FSPROGS +#define EXT2FS_CLUSTER_RATIO(fs) (1) +#define EXT2_CLUSTERS_PER_GROUP(s) (EXT2_BLOCKS_PER_GROUP(s)) +#define EXT2FS_B2C(fs, blk) (blk) +#endif + +/* + * Following xattr/acl related codes are based on codes in + * fs/ext3/xattr.c and fs/ext3/acl.c + */ +#define EXT2_XATTR_BHDR(ptr) ((struct ext2_ext_attr_header *)(ptr)) +#define EXT2_XATTR_BFIRST(ptr) \ + ((struct ext2_ext_attr_entry *)(EXT2_XATTR_BHDR(ptr) + 1)) +#define EXT2_XATTR_IHDR(inode) \ + ((struct ext2_ext_attr_header *) ((void *)(inode) + \ + EXT2_GOOD_OLD_INODE_SIZE + (inode)->i_extra_isize)) +#define EXT2_XATTR_IFIRST(inode) \ + ((struct ext2_ext_attr_entry *) ((void *)EXT2_XATTR_IHDR(inode) + \ + sizeof(EXT2_XATTR_IHDR(inode)->h_magic))) + +struct dir_iterate_data { + struct btrfs_trans_handle *trans; + struct btrfs_root *root; + struct btrfs_inode_item *inode; + u64 objectid; + u64 index_cnt; + u64 parent; + int errcode; +}; + +#define EXT2_ACL_VERSION 0x0001 + +/* 23.2.5 acl_tag_t values */ + +#define ACL_UNDEFINED_TAG (0x00) +#define ACL_USER_OBJ (0x01) +#define ACL_USER (0x02) +#define ACL_GROUP_OBJ (0x04) +#define ACL_GROUP (0x08) +#define ACL_MASK (0x10) +#define ACL_OTHER (0x20) + +/* 23.2.7 ACL qualifier constants */ + +#define ACL_UNDEFINED_ID ((id_t)-1) + +typedef struct { + __le16 e_tag; + __le16 e_perm; + __le32 e_id; +} ext2_acl_entry; + +typedef struct { + __le16 e_tag; + __le16 e_perm; +} ext2_acl_entry_short; + +typedef struct { + __le32 a_version; +} ext2_acl_header; + +#define ACL_EA_VERSION 0x0002 + +typedef struct { + __le16 e_tag; + __le16 e_perm; + __le32 e_id; +} acl_ea_entry; + +typedef struct { + __le32 a_version; + acl_ea_entry a_entries[0]; +} acl_ea_header; + +#endif /* BTRFSCONVERT_EXT2 */ + +#endif |