Archipelago » blktap-utils

/*

 * Copyright (c) 2008, XenSource Inc.

 * Copyright (c) 2010, Citrix Systems, Inc.

 *

 * All rights reserved.

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions are met:

 *     * Redistributions of source code must retain the above copyright

 *       notice, this list of conditions and the following disclaimer.

 *     * Redistributions in binary form must reproduce the above copyright

 *       notice, this list of conditions and the following disclaimer in the

 *       documentation and/or other materials provided with the distribution.

 *     * Neither the name of XenSource Inc. nor the names of its contributors

 *       may be used to endorse or promote products derived from this software

 *       without specific prior written permission.

 *

 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS

 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT

 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR

 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER

 * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,

 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,

 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR

 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF

 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING

 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS

 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

 */

#ifndef _LIB_VHDI_H_

#define _LIB_VHDI_H_

#include <inttypes.h>

#include <uuid/uuid.h>

#define VHD_MAX_NAME_LEN                    1024

typedef struct vhdi_context                 vhdi_context_t;

typedef struct vhdi_bat                     vhdi_bat_t;

typedef struct vhdi_block                   vhdi_block_t;

typedef struct vhdi_entry                   vhdi_entry_t;

typedef uint32_t                            vhdi_file_id_t;

typedef struct vhdi_file_ref                vhdi_file_ref_t;

typedef struct vhdi_file_table              vhdi_file_table_t;

struct vhdi_context {

        int                                 fd;

        int                                 spb;

        char                               *name;

        uint32_t                            vhd_block_size;

};

struct vhdi_bat {

        uint32_t                           *table;

        uint64_t                            vhd_blocks;

        uint32_t                            vhd_block_size;

        char                                vhd_path[VHD_MAX_NAME_LEN];

        char                                index_path[VHD_MAX_NAME_LEN];

        char                                file_table_path[VHD_MAX_NAME_LEN];

};

struct vhdi_entry {

        vhdi_file_id_t                      file_id;

        uint32_t                            offset;

};

struct vhdi_block {

        int                                 entries;

        vhdi_entry_t                       *table;

};

struct vhdi_file_ref {

        vhdi_file_id_t                      file_id;

        char                               *path;

        uuid_t                              vhd_uuid;

        uint32_t                            vhd_timestamp;

};

struct vhdi_file_table {

        int                                 entries;

        vhdi_file_ref_t                    *table;

};

void vhdi_entry_in(vhdi_entry_t *);

int vhdi_create(const char *, uint32_t);

int vhdi_open(vhdi_context_t *, const char *, int);

void vhdi_close(vhdi_context_t *);

int vhdi_read_block(vhdi_context_t *, vhdi_block_t *, uint32_t);

int vhdi_write_block(vhdi_context_t *, vhdi_block_t *, uint32_t);

int vhdi_append_block(vhdi_context_t *, vhdi_block_t *, uint32_t *);

int vhdi_bat_create(const char *, const char *, const char *, const char *);

int vhdi_bat_load(const char *, vhdi_bat_t *);

int vhdi_bat_write(const char *, vhdi_bat_t *);

int vhdi_file_table_create(const char *);

int vhdi_file_table_load(const char *, vhdi_file_table_t *);

int vhdi_file_table_add(const char *, const char *, vhdi_file_id_t *);

void vhdi_file_table_free(vhdi_file_table_t *);

#endif