mirror of
https://github.com/kdave/btrfs-progs
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156 lines
4.1 KiB
C
156 lines
4.1 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_FS_H__
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#define __BTRFS_CONVERT_SOURCE_FS_H__
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#include "kerncompat.h"
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#include <sys/types.h>
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#include <pthread.h>
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#include "kernel-shared/uapi/btrfs_tree.h"
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#include "convert/common.h"
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struct btrfs_root;
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struct btrfs_trans_handle;
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#define CONV_IMAGE_SUBVOL_OBJECTID BTRFS_FIRST_FREE_OBJECTID
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extern const struct simple_range btrfs_reserved_ranges[3];
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const struct simple_range *intersect_with_reserved(u64 bytenr, u64 num_bytes);
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struct task_ctx {
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pthread_mutex_t mutex;
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u64 max_copy_inodes;
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u64 cur_copy_inodes;
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struct task_info *info;
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};
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#define SOURCE_FS_NAME_LEN (16)
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enum {
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CONVERT_FLAG_DATACSUM = (1U << 0),
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CONVERT_FLAG_INLINE_DATA = (1U << 1),
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CONVERT_FLAG_XATTR = (1U << 2),
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CONVERT_FLAG_COPY_LABEL = (1U << 3),
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CONVERT_FLAG_SET_LABEL = (1U << 4),
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CONVERT_FLAG_COPY_FSID = (1U << 5),
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};
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/* 23.2.5 acl_tag_t values */
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#define ACL_UNDEFINED_TAG (0x00)
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#define ACL_USER_OBJ (0x01)
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#define ACL_USER (0x02)
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#define ACL_GROUP_OBJ (0x04)
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#define ACL_GROUP (0x08)
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#define ACL_MASK (0x10)
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#define ACL_OTHER (0x20)
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/* 23.2.7 ACL qualifier constants */
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#define ACL_UNDEFINED_ID ((id_t)-1)
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#define ACL_EA_VERSION 0x0002
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typedef struct {
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__le16 e_tag;
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__le16 e_perm;
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__le32 e_id;
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} acl_ea_entry;
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typedef struct {
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__le32 a_version;
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acl_ea_entry a_entries[0];
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} acl_ea_header;
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typedef struct {
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__le16 e_tag;
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__le16 e_perm;
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__le32 e_id;
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} ext2_acl_entry;
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typedef struct {
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__le16 e_tag;
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__le16 e_perm;
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} ext2_acl_entry_short;
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typedef struct {
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__le32 a_version;
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} ext2_acl_header;
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static inline size_t acl_ea_size(int count)
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{
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return sizeof(acl_ea_header) + count * sizeof(acl_ea_entry);
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}
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int ext2_acl_count(size_t size);
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#ifndef MKDEV
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#define MINORBITS 20
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#define MKDEV(ma, mi) (((ma) << MINORBITS) | (mi))
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#endif
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dev_t decode_dev(u32 dev);
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struct btrfs_convert_operations {
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const char name[SOURCE_FS_NAME_LEN];
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int (*open_fs)(struct btrfs_convert_context *cctx, const char *devname);
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int (*read_used_space)(struct btrfs_convert_context *cctx);
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int (*copy_inodes)(struct btrfs_convert_context *cctx,
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struct btrfs_root *root, u32 covert_flags,
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struct task_ctx *p);
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void (*close_fs)(struct btrfs_convert_context *cctx);
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int (*check_state)(struct btrfs_convert_context *cctx);
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};
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struct blk_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_root *convert_root;
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struct btrfs_inode_item *inode;
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u64 convert_ino;
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u64 objectid;
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u64 first_block;
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u64 disk_block;
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u64 num_blocks;
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u64 boundary;
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int checksum;
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int errcode;
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};
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void init_convert_context(struct btrfs_convert_context *cctx);
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void clean_convert_context(struct btrfs_convert_context *cctx);
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int block_iterate_proc(u64 disk_block, u64 file_block,
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struct blk_iterate_data *idata);
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void init_blk_iterate_data(struct blk_iterate_data *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, int checksum);
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int convert_insert_dirent(struct btrfs_trans_handle *trans,
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struct btrfs_root *root,
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const char *name, size_t name_len,
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u64 dir, u64 objectid,
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u8 file_type, u64 index_cnt,
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struct btrfs_inode_item *inode);
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int read_disk_extent(struct btrfs_root *root, u64 bytenr,
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u32 num_bytes, char *buffer);
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int record_file_blocks(struct blk_iterate_data *data,
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u64 file_block, u64 disk_block, u64 num_blocks);
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#endif
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