btrfs-progs: convert: move ext2 definitions out of main

Signed-off-by: David Sterba <dsterba@suse.com>

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