qemu/block/parallels.h
Markus Armbruster 8f0a3716e4 Clean up includes
Clean up includes so that osdep.h is included first and headers
which it implies are not included manually.

This commit was created with scripts/clean-includes, with the change
to target/s390x/gen-features.c manually reverted, and blank lines
around deletions collapsed.

Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20180201111846.21846-3-armbru@redhat.com>
2018-02-09 05:05:11 +01:00

88 lines
2.7 KiB
C

/*
* Block driver for Parallels disk image format
*
* Copyright (c) 2015-2017 Virtuozzo, Inc.
* Authors:
* 2016-2017 Klim S. Kireev <klim.kireev@virtuozzo.com>
* 2015 Denis V. Lunev <den@openvz.org>
*
* This code was originally based on comparing different disk images created
* by Parallels. Currently it is based on opened OpenVZ sources
* available at
* https://github.com/OpenVZ/ploop
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#ifndef BLOCK_PARALLELS_H
#define BLOCK_PARALLELS_H
#include "qemu/coroutine.h"
#define HEADS_NUMBER 16
#define SEC_IN_CYL 32
#define DEFAULT_CLUSTER_SIZE 1048576 /* 1 MiB */
/* always little-endian */
typedef struct ParallelsHeader {
char magic[16]; /* "WithoutFreeSpace" */
uint32_t version;
uint32_t heads;
uint32_t cylinders;
uint32_t tracks;
uint32_t bat_entries;
uint64_t nb_sectors;
uint32_t inuse;
uint32_t data_off;
char padding[12];
} QEMU_PACKED ParallelsHeader;
typedef enum ParallelsPreallocMode {
PRL_PREALLOC_MODE_FALLOCATE = 0,
PRL_PREALLOC_MODE_TRUNCATE = 1,
PRL_PREALLOC_MODE__MAX = 2,
} ParallelsPreallocMode;
typedef struct BDRVParallelsState {
/** Locking is conservative, the lock protects
* - image file extending (truncate, fallocate)
* - any access to block allocation table
*/
CoMutex lock;
ParallelsHeader *header;
uint32_t header_size;
bool header_unclean;
unsigned long *bat_dirty_bmap;
unsigned int bat_dirty_block;
uint32_t *bat_bitmap;
unsigned int bat_size;
int64_t data_end;
uint64_t prealloc_size;
ParallelsPreallocMode prealloc_mode;
unsigned int tracks;
unsigned int off_multiplier;
Error *migration_blocker;
} BDRVParallelsState;
#endif