1019d6b8fSAnthony Liguori /* 2019d6b8fSAnthony Liguori * Block driver for Parallels disk image format 3019d6b8fSAnthony Liguori * 4019d6b8fSAnthony Liguori * Copyright (c) 2007 Alex Beregszaszi 5cc5690f2SDenis V. Lunev * Copyright (c) 2015 Denis V. Lunev <den@openvz.org> 6019d6b8fSAnthony Liguori * 7cc5690f2SDenis V. Lunev * This code was originally based on comparing different disk images created 8cc5690f2SDenis V. Lunev * by Parallels. Currently it is based on opened OpenVZ sources 9cc5690f2SDenis V. Lunev * available at 10cc5690f2SDenis V. Lunev * http://git.openvz.org/?p=ploop;a=summary 11019d6b8fSAnthony Liguori * 12019d6b8fSAnthony Liguori * Permission is hereby granted, free of charge, to any person obtaining a copy 13019d6b8fSAnthony Liguori * of this software and associated documentation files (the "Software"), to deal 14019d6b8fSAnthony Liguori * in the Software without restriction, including without limitation the rights 15019d6b8fSAnthony Liguori * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 16019d6b8fSAnthony Liguori * copies of the Software, and to permit persons to whom the Software is 17019d6b8fSAnthony Liguori * furnished to do so, subject to the following conditions: 18019d6b8fSAnthony Liguori * 19019d6b8fSAnthony Liguori * The above copyright notice and this permission notice shall be included in 20019d6b8fSAnthony Liguori * all copies or substantial portions of the Software. 21019d6b8fSAnthony Liguori * 22019d6b8fSAnthony Liguori * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 23019d6b8fSAnthony Liguori * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 24019d6b8fSAnthony Liguori * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 25019d6b8fSAnthony Liguori * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 26019d6b8fSAnthony Liguori * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 27019d6b8fSAnthony Liguori * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN 28019d6b8fSAnthony Liguori * THE SOFTWARE. 29019d6b8fSAnthony Liguori */ 3080c71a24SPeter Maydell #include "qemu/osdep.h" 31019d6b8fSAnthony Liguori #include "qemu-common.h" 32737e150eSPaolo Bonzini #include "block/block_int.h" 331de7afc9SPaolo Bonzini #include "qemu/module.h" 340d31c7c2SDenis V. Lunev #include "qemu/bitmap.h" 35d6179011SDenis V. Lunev #include "qapi/util.h" 36019d6b8fSAnthony Liguori 37019d6b8fSAnthony Liguori /**************************************************************/ 38019d6b8fSAnthony Liguori 39019d6b8fSAnthony Liguori #define HEADER_MAGIC "WithoutFreeSpace" 40d25d5980SDenis V. Lunev #define HEADER_MAGIC2 "WithouFreSpacExt" 41019d6b8fSAnthony Liguori #define HEADER_VERSION 2 426dd6b9f1SDenis V. Lunev #define HEADER_INUSE_MAGIC (0x746F6E59) 43019d6b8fSAnthony Liguori 4474cf6c50SDenis V. Lunev #define DEFAULT_CLUSTER_SIZE 1048576 /* 1 MiB */ 4574cf6c50SDenis V. Lunev 4674cf6c50SDenis V. Lunev 47019d6b8fSAnthony Liguori // always little-endian 4807898904SDenis V. Lunev typedef struct ParallelsHeader { 49019d6b8fSAnthony Liguori char magic[16]; // "WithoutFreeSpace" 50019d6b8fSAnthony Liguori uint32_t version; 51019d6b8fSAnthony Liguori uint32_t heads; 52019d6b8fSAnthony Liguori uint32_t cylinders; 53019d6b8fSAnthony Liguori uint32_t tracks; 54369f7de9SDenis V. Lunev uint32_t bat_entries; 558c27d54fSDenis V. Lunev uint64_t nb_sectors; 568c27d54fSDenis V. Lunev uint32_t inuse; 578c27d54fSDenis V. Lunev uint32_t data_off; 588c27d54fSDenis V. Lunev char padding[12]; 5907898904SDenis V. Lunev } QEMU_PACKED ParallelsHeader; 60019d6b8fSAnthony Liguori 61d6179011SDenis V. Lunev 62d6179011SDenis V. Lunev typedef enum ParallelsPreallocMode { 63d6179011SDenis V. Lunev PRL_PREALLOC_MODE_FALLOCATE = 0, 64d6179011SDenis V. Lunev PRL_PREALLOC_MODE_TRUNCATE = 1, 657fb1cf16SEric Blake PRL_PREALLOC_MODE__MAX = 2, 66d6179011SDenis V. Lunev } ParallelsPreallocMode; 67d6179011SDenis V. Lunev 68d6179011SDenis V. Lunev static const char *prealloc_mode_lookup[] = { 69d6179011SDenis V. Lunev "falloc", 70d6179011SDenis V. Lunev "truncate", 71d6179011SDenis V. Lunev NULL, 72d6179011SDenis V. Lunev }; 73d6179011SDenis V. Lunev 74d6179011SDenis V. Lunev 75019d6b8fSAnthony Liguori typedef struct BDRVParallelsState { 76481fb9cfSDenis V. Lunev /** Locking is conservative, the lock protects 77481fb9cfSDenis V. Lunev * - image file extending (truncate, fallocate) 78481fb9cfSDenis V. Lunev * - any access to block allocation table 79481fb9cfSDenis V. Lunev */ 80848c66e8SPaolo Bonzini CoMutex lock; 81019d6b8fSAnthony Liguori 829eae9ccaSDenis V. Lunev ParallelsHeader *header; 839eae9ccaSDenis V. Lunev uint32_t header_size; 846dd6b9f1SDenis V. Lunev bool header_unclean; 856dd6b9f1SDenis V. Lunev 860d31c7c2SDenis V. Lunev unsigned long *bat_dirty_bmap; 870d31c7c2SDenis V. Lunev unsigned int bat_dirty_block; 880d31c7c2SDenis V. Lunev 89369f7de9SDenis V. Lunev uint32_t *bat_bitmap; 90369f7de9SDenis V. Lunev unsigned int bat_size; 91019d6b8fSAnthony Liguori 9219f5dc15SDenis V. Lunev int64_t data_end; 93d6179011SDenis V. Lunev uint64_t prealloc_size; 94d6179011SDenis V. Lunev ParallelsPreallocMode prealloc_mode; 95d6179011SDenis V. Lunev 969302e863SKevin Wolf unsigned int tracks; 97d25d5980SDenis V. Lunev 98d25d5980SDenis V. Lunev unsigned int off_multiplier; 99019d6b8fSAnthony Liguori } BDRVParallelsState; 100019d6b8fSAnthony Liguori 101555cc9d9SDenis V. Lunev 102d6179011SDenis V. Lunev #define PARALLELS_OPT_PREALLOC_MODE "prealloc-mode" 103d6179011SDenis V. Lunev #define PARALLELS_OPT_PREALLOC_SIZE "prealloc-size" 104d6179011SDenis V. Lunev 105d6179011SDenis V. Lunev static QemuOptsList parallels_runtime_opts = { 106d6179011SDenis V. Lunev .name = "parallels", 107d6179011SDenis V. Lunev .head = QTAILQ_HEAD_INITIALIZER(parallels_runtime_opts.head), 108d6179011SDenis V. Lunev .desc = { 109d6179011SDenis V. Lunev { 110d6179011SDenis V. Lunev .name = PARALLELS_OPT_PREALLOC_SIZE, 111d6179011SDenis V. Lunev .type = QEMU_OPT_SIZE, 112d6179011SDenis V. Lunev .help = "Preallocation size on image expansion", 113d6179011SDenis V. Lunev .def_value_str = "128MiB", 114d6179011SDenis V. Lunev }, 115d6179011SDenis V. Lunev { 116d6179011SDenis V. Lunev .name = PARALLELS_OPT_PREALLOC_MODE, 117d6179011SDenis V. Lunev .type = QEMU_OPT_STRING, 118d6179011SDenis V. Lunev .help = "Preallocation mode on image expansion " 119d6179011SDenis V. Lunev "(allowed values: falloc, truncate)", 120d6179011SDenis V. Lunev .def_value_str = "falloc", 121d6179011SDenis V. Lunev }, 122d6179011SDenis V. Lunev { /* end of list */ }, 123d6179011SDenis V. Lunev }, 124d6179011SDenis V. Lunev }; 125d6179011SDenis V. Lunev 126d6179011SDenis V. Lunev 127555cc9d9SDenis V. Lunev static int64_t bat2sect(BDRVParallelsState *s, uint32_t idx) 128555cc9d9SDenis V. Lunev { 129dd97cdc0SDenis V. Lunev return (uint64_t)le32_to_cpu(s->bat_bitmap[idx]) * s->off_multiplier; 130555cc9d9SDenis V. Lunev } 131555cc9d9SDenis V. Lunev 1322d68e22eSDenis V. Lunev static uint32_t bat_entry_off(uint32_t idx) 1332d68e22eSDenis V. Lunev { 1342d68e22eSDenis V. Lunev return sizeof(ParallelsHeader) + sizeof(uint32_t) * idx; 1352d68e22eSDenis V. Lunev } 1362d68e22eSDenis V. Lunev 13729442569SRoman Kagan static int64_t seek_to_sector(BDRVParallelsState *s, int64_t sector_num) 138019d6b8fSAnthony Liguori { 139c34d2451SDavid Woodhouse uint32_t index, offset; 140019d6b8fSAnthony Liguori 141019d6b8fSAnthony Liguori index = sector_num / s->tracks; 142019d6b8fSAnthony Liguori offset = sector_num % s->tracks; 143019d6b8fSAnthony Liguori 1449d8b88f6SChristoph Hellwig /* not allocated */ 145369f7de9SDenis V. Lunev if ((index >= s->bat_size) || (s->bat_bitmap[index] == 0)) { 146019d6b8fSAnthony Liguori return -1; 147369f7de9SDenis V. Lunev } 148555cc9d9SDenis V. Lunev return bat2sect(s, index) + offset; 149019d6b8fSAnthony Liguori } 150019d6b8fSAnthony Liguori 1519de9da17SRoman Kagan static int cluster_remainder(BDRVParallelsState *s, int64_t sector_num, 1529de9da17SRoman Kagan int nb_sectors) 1539de9da17SRoman Kagan { 1549de9da17SRoman Kagan int ret = s->tracks - sector_num % s->tracks; 1559de9da17SRoman Kagan return MIN(nb_sectors, ret); 1569de9da17SRoman Kagan } 1579de9da17SRoman Kagan 1586953d920SDenis V. Lunev static int64_t block_status(BDRVParallelsState *s, int64_t sector_num, 1596953d920SDenis V. Lunev int nb_sectors, int *pnum) 1606953d920SDenis V. Lunev { 1616953d920SDenis V. Lunev int64_t start_off = -2, prev_end_off = -2; 1626953d920SDenis V. Lunev 1636953d920SDenis V. Lunev *pnum = 0; 1646953d920SDenis V. Lunev while (nb_sectors > 0 || start_off == -2) { 1656953d920SDenis V. Lunev int64_t offset = seek_to_sector(s, sector_num); 1666953d920SDenis V. Lunev int to_end; 1676953d920SDenis V. Lunev 1686953d920SDenis V. Lunev if (start_off == -2) { 1696953d920SDenis V. Lunev start_off = offset; 1706953d920SDenis V. Lunev prev_end_off = offset; 1716953d920SDenis V. Lunev } else if (offset != prev_end_off) { 1726953d920SDenis V. Lunev break; 1736953d920SDenis V. Lunev } 1746953d920SDenis V. Lunev 1756953d920SDenis V. Lunev to_end = cluster_remainder(s, sector_num, nb_sectors); 1766953d920SDenis V. Lunev nb_sectors -= to_end; 1776953d920SDenis V. Lunev sector_num += to_end; 1786953d920SDenis V. Lunev *pnum += to_end; 1796953d920SDenis V. Lunev 1806953d920SDenis V. Lunev if (offset > 0) { 1816953d920SDenis V. Lunev prev_end_off += to_end; 1826953d920SDenis V. Lunev } 1836953d920SDenis V. Lunev } 1846953d920SDenis V. Lunev return start_off; 1856953d920SDenis V. Lunev } 1866953d920SDenis V. Lunev 187ddd2ef2cSDenis V. Lunev static int64_t allocate_clusters(BlockDriverState *bs, int64_t sector_num, 188ddd2ef2cSDenis V. Lunev int nb_sectors, int *pnum) 1895a41e1faSDenis V. Lunev { 1905a41e1faSDenis V. Lunev BDRVParallelsState *s = bs->opaque; 191ddd2ef2cSDenis V. Lunev uint32_t idx, to_allocate, i; 192ddd2ef2cSDenis V. Lunev int64_t pos, space; 193ddd2ef2cSDenis V. Lunev 194ddd2ef2cSDenis V. Lunev pos = block_status(s, sector_num, nb_sectors, pnum); 195ddd2ef2cSDenis V. Lunev if (pos > 0) { 196ddd2ef2cSDenis V. Lunev return pos; 197ddd2ef2cSDenis V. Lunev } 1985a41e1faSDenis V. Lunev 1995a41e1faSDenis V. Lunev idx = sector_num / s->tracks; 200369f7de9SDenis V. Lunev if (idx >= s->bat_size) { 2015a41e1faSDenis V. Lunev return -EINVAL; 2025a41e1faSDenis V. Lunev } 2035a41e1faSDenis V. Lunev 204ddd2ef2cSDenis V. Lunev to_allocate = (sector_num + *pnum + s->tracks - 1) / s->tracks - idx; 205ddd2ef2cSDenis V. Lunev space = to_allocate * s->tracks; 2069a4f4c31SKevin Wolf if (s->data_end + space > bdrv_getlength(bs->file->bs) >> BDRV_SECTOR_BITS) { 20719f5dc15SDenis V. Lunev int ret; 208ddd2ef2cSDenis V. Lunev space += s->prealloc_size; 20919f5dc15SDenis V. Lunev if (s->prealloc_mode == PRL_PREALLOC_MODE_FALLOCATE) { 2109a4f4c31SKevin Wolf ret = bdrv_write_zeroes(bs->file->bs, s->data_end, space, 0); 2115a41e1faSDenis V. Lunev } else { 2129a4f4c31SKevin Wolf ret = bdrv_truncate(bs->file->bs, 213ddd2ef2cSDenis V. Lunev (s->data_end + space) << BDRV_SECTOR_BITS); 2145a41e1faSDenis V. Lunev } 2155a41e1faSDenis V. Lunev if (ret < 0) { 2165a41e1faSDenis V. Lunev return ret; 2175a41e1faSDenis V. Lunev } 21819f5dc15SDenis V. Lunev } 219ddd2ef2cSDenis V. Lunev 220ddd2ef2cSDenis V. Lunev for (i = 0; i < to_allocate; i++) { 221ddd2ef2cSDenis V. Lunev s->bat_bitmap[idx + i] = cpu_to_le32(s->data_end / s->off_multiplier); 22219f5dc15SDenis V. Lunev s->data_end += s->tracks; 223ddd2ef2cSDenis V. Lunev bitmap_set(s->bat_dirty_bmap, 224c9f6856dSVladimir Sementsov-Ogievskiy bat_entry_off(idx + i) / s->bat_dirty_block, 1); 225ddd2ef2cSDenis V. Lunev } 2265a41e1faSDenis V. Lunev 227ddd2ef2cSDenis V. Lunev return bat2sect(s, idx) + sector_num % s->tracks; 2285a41e1faSDenis V. Lunev } 2295a41e1faSDenis V. Lunev 2300d31c7c2SDenis V. Lunev 2310d31c7c2SDenis V. Lunev static coroutine_fn int parallels_co_flush_to_os(BlockDriverState *bs) 2320d31c7c2SDenis V. Lunev { 2330d31c7c2SDenis V. Lunev BDRVParallelsState *s = bs->opaque; 2340d31c7c2SDenis V. Lunev unsigned long size = DIV_ROUND_UP(s->header_size, s->bat_dirty_block); 2350d31c7c2SDenis V. Lunev unsigned long bit; 2360d31c7c2SDenis V. Lunev 2370d31c7c2SDenis V. Lunev qemu_co_mutex_lock(&s->lock); 2380d31c7c2SDenis V. Lunev 2390d31c7c2SDenis V. Lunev bit = find_first_bit(s->bat_dirty_bmap, size); 2400d31c7c2SDenis V. Lunev while (bit < size) { 2410d31c7c2SDenis V. Lunev uint32_t off = bit * s->bat_dirty_block; 2420d31c7c2SDenis V. Lunev uint32_t to_write = s->bat_dirty_block; 2430d31c7c2SDenis V. Lunev int ret; 2440d31c7c2SDenis V. Lunev 2450d31c7c2SDenis V. Lunev if (off + to_write > s->header_size) { 2460d31c7c2SDenis V. Lunev to_write = s->header_size - off; 2470d31c7c2SDenis V. Lunev } 2489a4f4c31SKevin Wolf ret = bdrv_pwrite(bs->file->bs, off, (uint8_t *)s->header + off, 2499a4f4c31SKevin Wolf to_write); 2500d31c7c2SDenis V. Lunev if (ret < 0) { 2510d31c7c2SDenis V. Lunev qemu_co_mutex_unlock(&s->lock); 2520d31c7c2SDenis V. Lunev return ret; 2530d31c7c2SDenis V. Lunev } 2540d31c7c2SDenis V. Lunev bit = find_next_bit(s->bat_dirty_bmap, size, bit + 1); 2550d31c7c2SDenis V. Lunev } 2560d31c7c2SDenis V. Lunev bitmap_zero(s->bat_dirty_bmap, size); 2570d31c7c2SDenis V. Lunev 2580d31c7c2SDenis V. Lunev qemu_co_mutex_unlock(&s->lock); 2590d31c7c2SDenis V. Lunev return 0; 2600d31c7c2SDenis V. Lunev } 2610d31c7c2SDenis V. Lunev 2620d31c7c2SDenis V. Lunev 263dd3bed16SRoman Kagan static int64_t coroutine_fn parallels_co_get_block_status(BlockDriverState *bs, 264*67a0fd2aSFam Zheng int64_t sector_num, int nb_sectors, int *pnum, BlockDriverState **file) 265dd3bed16SRoman Kagan { 266dd3bed16SRoman Kagan BDRVParallelsState *s = bs->opaque; 267dd3bed16SRoman Kagan int64_t offset; 268dd3bed16SRoman Kagan 269dd3bed16SRoman Kagan qemu_co_mutex_lock(&s->lock); 2706953d920SDenis V. Lunev offset = block_status(s, sector_num, nb_sectors, pnum); 271dd3bed16SRoman Kagan qemu_co_mutex_unlock(&s->lock); 272dd3bed16SRoman Kagan 273dd3bed16SRoman Kagan if (offset < 0) { 274dd3bed16SRoman Kagan return 0; 275dd3bed16SRoman Kagan } 276dd3bed16SRoman Kagan 277dd3bed16SRoman Kagan return (offset << BDRV_SECTOR_BITS) | 278dd3bed16SRoman Kagan BDRV_BLOCK_DATA | BDRV_BLOCK_OFFSET_VALID; 279dd3bed16SRoman Kagan } 280dd3bed16SRoman Kagan 2815a41e1faSDenis V. Lunev static coroutine_fn int parallels_co_writev(BlockDriverState *bs, 2825a41e1faSDenis V. Lunev int64_t sector_num, int nb_sectors, QEMUIOVector *qiov) 2835a41e1faSDenis V. Lunev { 2845a41e1faSDenis V. Lunev BDRVParallelsState *s = bs->opaque; 2855a41e1faSDenis V. Lunev uint64_t bytes_done = 0; 2865a41e1faSDenis V. Lunev QEMUIOVector hd_qiov; 2875a41e1faSDenis V. Lunev int ret = 0; 2885a41e1faSDenis V. Lunev 2895a41e1faSDenis V. Lunev qemu_iovec_init(&hd_qiov, qiov->niov); 2905a41e1faSDenis V. Lunev 2915a41e1faSDenis V. Lunev while (nb_sectors > 0) { 2925a41e1faSDenis V. Lunev int64_t position; 2935a41e1faSDenis V. Lunev int n, nbytes; 2945a41e1faSDenis V. Lunev 2955a41e1faSDenis V. Lunev qemu_co_mutex_lock(&s->lock); 296ddd2ef2cSDenis V. Lunev position = allocate_clusters(bs, sector_num, nb_sectors, &n); 2975a41e1faSDenis V. Lunev qemu_co_mutex_unlock(&s->lock); 2985a41e1faSDenis V. Lunev if (position < 0) { 2995a41e1faSDenis V. Lunev ret = (int)position; 3005a41e1faSDenis V. Lunev break; 3015a41e1faSDenis V. Lunev } 3025a41e1faSDenis V. Lunev 3035a41e1faSDenis V. Lunev nbytes = n << BDRV_SECTOR_BITS; 3045a41e1faSDenis V. Lunev 3055a41e1faSDenis V. Lunev qemu_iovec_reset(&hd_qiov); 3065a41e1faSDenis V. Lunev qemu_iovec_concat(&hd_qiov, qiov, bytes_done, nbytes); 3075a41e1faSDenis V. Lunev 3089a4f4c31SKevin Wolf ret = bdrv_co_writev(bs->file->bs, position, n, &hd_qiov); 3095a41e1faSDenis V. Lunev if (ret < 0) { 3105a41e1faSDenis V. Lunev break; 3115a41e1faSDenis V. Lunev } 3125a41e1faSDenis V. Lunev 3135a41e1faSDenis V. Lunev nb_sectors -= n; 3145a41e1faSDenis V. Lunev sector_num += n; 3155a41e1faSDenis V. Lunev bytes_done += nbytes; 3165a41e1faSDenis V. Lunev } 3175a41e1faSDenis V. Lunev 3185a41e1faSDenis V. Lunev qemu_iovec_destroy(&hd_qiov); 3195a41e1faSDenis V. Lunev return ret; 3205a41e1faSDenis V. Lunev } 3215a41e1faSDenis V. Lunev 322481fb9cfSDenis V. Lunev static coroutine_fn int parallels_co_readv(BlockDriverState *bs, 323481fb9cfSDenis V. Lunev int64_t sector_num, int nb_sectors, QEMUIOVector *qiov) 324019d6b8fSAnthony Liguori { 32529442569SRoman Kagan BDRVParallelsState *s = bs->opaque; 326481fb9cfSDenis V. Lunev uint64_t bytes_done = 0; 327481fb9cfSDenis V. Lunev QEMUIOVector hd_qiov; 328481fb9cfSDenis V. Lunev int ret = 0; 329481fb9cfSDenis V. Lunev 330481fb9cfSDenis V. Lunev qemu_iovec_init(&hd_qiov, qiov->niov); 33129442569SRoman Kagan 332019d6b8fSAnthony Liguori while (nb_sectors > 0) { 333481fb9cfSDenis V. Lunev int64_t position; 334481fb9cfSDenis V. Lunev int n, nbytes; 335481fb9cfSDenis V. Lunev 336481fb9cfSDenis V. Lunev qemu_co_mutex_lock(&s->lock); 3376953d920SDenis V. Lunev position = block_status(s, sector_num, nb_sectors, &n); 338481fb9cfSDenis V. Lunev qemu_co_mutex_unlock(&s->lock); 339481fb9cfSDenis V. Lunev 340481fb9cfSDenis V. Lunev nbytes = n << BDRV_SECTOR_BITS; 341481fb9cfSDenis V. Lunev 342481fb9cfSDenis V. Lunev if (position < 0) { 343481fb9cfSDenis V. Lunev qemu_iovec_memset(qiov, bytes_done, 0, nbytes); 3449d8b88f6SChristoph Hellwig } else { 345481fb9cfSDenis V. Lunev qemu_iovec_reset(&hd_qiov); 346481fb9cfSDenis V. Lunev qemu_iovec_concat(&hd_qiov, qiov, bytes_done, nbytes); 347481fb9cfSDenis V. Lunev 3489a4f4c31SKevin Wolf ret = bdrv_co_readv(bs->file->bs, position, n, &hd_qiov); 349481fb9cfSDenis V. Lunev if (ret < 0) { 350481fb9cfSDenis V. Lunev break; 3519d8b88f6SChristoph Hellwig } 352019d6b8fSAnthony Liguori } 353019d6b8fSAnthony Liguori 354481fb9cfSDenis V. Lunev nb_sectors -= n; 355481fb9cfSDenis V. Lunev sector_num += n; 356481fb9cfSDenis V. Lunev bytes_done += nbytes; 357481fb9cfSDenis V. Lunev } 358481fb9cfSDenis V. Lunev 359481fb9cfSDenis V. Lunev qemu_iovec_destroy(&hd_qiov); 3602914caa0SPaolo Bonzini return ret; 3612914caa0SPaolo Bonzini } 3622914caa0SPaolo Bonzini 36349ad6467SDenis V. Lunev 36449ad6467SDenis V. Lunev static int parallels_check(BlockDriverState *bs, BdrvCheckResult *res, 36549ad6467SDenis V. Lunev BdrvCheckMode fix) 36649ad6467SDenis V. Lunev { 36749ad6467SDenis V. Lunev BDRVParallelsState *s = bs->opaque; 36849ad6467SDenis V. Lunev int64_t size, prev_off, high_off; 36949ad6467SDenis V. Lunev int ret; 37049ad6467SDenis V. Lunev uint32_t i; 37149ad6467SDenis V. Lunev bool flush_bat = false; 37249ad6467SDenis V. Lunev int cluster_size = s->tracks << BDRV_SECTOR_BITS; 37349ad6467SDenis V. Lunev 3749a4f4c31SKevin Wolf size = bdrv_getlength(bs->file->bs); 37549ad6467SDenis V. Lunev if (size < 0) { 37649ad6467SDenis V. Lunev res->check_errors++; 37749ad6467SDenis V. Lunev return size; 37849ad6467SDenis V. Lunev } 37949ad6467SDenis V. Lunev 3806dd6b9f1SDenis V. Lunev if (s->header_unclean) { 3816dd6b9f1SDenis V. Lunev fprintf(stderr, "%s image was not closed correctly\n", 3826dd6b9f1SDenis V. Lunev fix & BDRV_FIX_ERRORS ? "Repairing" : "ERROR"); 3836dd6b9f1SDenis V. Lunev res->corruptions++; 3846dd6b9f1SDenis V. Lunev if (fix & BDRV_FIX_ERRORS) { 3856dd6b9f1SDenis V. Lunev /* parallels_close will do the job right */ 3866dd6b9f1SDenis V. Lunev res->corruptions_fixed++; 3876dd6b9f1SDenis V. Lunev s->header_unclean = false; 3886dd6b9f1SDenis V. Lunev } 3896dd6b9f1SDenis V. Lunev } 3906dd6b9f1SDenis V. Lunev 39149ad6467SDenis V. Lunev res->bfi.total_clusters = s->bat_size; 39249ad6467SDenis V. Lunev res->bfi.compressed_clusters = 0; /* compression is not supported */ 39349ad6467SDenis V. Lunev 39449ad6467SDenis V. Lunev high_off = 0; 39549ad6467SDenis V. Lunev prev_off = 0; 39649ad6467SDenis V. Lunev for (i = 0; i < s->bat_size; i++) { 39749ad6467SDenis V. Lunev int64_t off = bat2sect(s, i) << BDRV_SECTOR_BITS; 39849ad6467SDenis V. Lunev if (off == 0) { 39949ad6467SDenis V. Lunev prev_off = 0; 40049ad6467SDenis V. Lunev continue; 40149ad6467SDenis V. Lunev } 40249ad6467SDenis V. Lunev 40349ad6467SDenis V. Lunev /* cluster outside the image */ 40449ad6467SDenis V. Lunev if (off > size) { 40549ad6467SDenis V. Lunev fprintf(stderr, "%s cluster %u is outside image\n", 40649ad6467SDenis V. Lunev fix & BDRV_FIX_ERRORS ? "Repairing" : "ERROR", i); 40749ad6467SDenis V. Lunev res->corruptions++; 40849ad6467SDenis V. Lunev if (fix & BDRV_FIX_ERRORS) { 40949ad6467SDenis V. Lunev prev_off = 0; 41049ad6467SDenis V. Lunev s->bat_bitmap[i] = 0; 41149ad6467SDenis V. Lunev res->corruptions_fixed++; 41249ad6467SDenis V. Lunev flush_bat = true; 41349ad6467SDenis V. Lunev continue; 41449ad6467SDenis V. Lunev } 41549ad6467SDenis V. Lunev } 41649ad6467SDenis V. Lunev 41749ad6467SDenis V. Lunev res->bfi.allocated_clusters++; 41849ad6467SDenis V. Lunev if (off > high_off) { 41949ad6467SDenis V. Lunev high_off = off; 42049ad6467SDenis V. Lunev } 42149ad6467SDenis V. Lunev 42249ad6467SDenis V. Lunev if (prev_off != 0 && (prev_off + cluster_size) != off) { 42349ad6467SDenis V. Lunev res->bfi.fragmented_clusters++; 42449ad6467SDenis V. Lunev } 42549ad6467SDenis V. Lunev prev_off = off; 42649ad6467SDenis V. Lunev } 42749ad6467SDenis V. Lunev 42849ad6467SDenis V. Lunev if (flush_bat) { 4299a4f4c31SKevin Wolf ret = bdrv_pwrite_sync(bs->file->bs, 0, s->header, s->header_size); 43049ad6467SDenis V. Lunev if (ret < 0) { 43149ad6467SDenis V. Lunev res->check_errors++; 43249ad6467SDenis V. Lunev return ret; 43349ad6467SDenis V. Lunev } 43449ad6467SDenis V. Lunev } 43549ad6467SDenis V. Lunev 43649ad6467SDenis V. Lunev res->image_end_offset = high_off + cluster_size; 43749ad6467SDenis V. Lunev if (size > res->image_end_offset) { 43849ad6467SDenis V. Lunev int64_t count; 43949ad6467SDenis V. Lunev count = DIV_ROUND_UP(size - res->image_end_offset, cluster_size); 44049ad6467SDenis V. Lunev fprintf(stderr, "%s space leaked at the end of the image %" PRId64 "\n", 44149ad6467SDenis V. Lunev fix & BDRV_FIX_LEAKS ? "Repairing" : "ERROR", 44249ad6467SDenis V. Lunev size - res->image_end_offset); 44349ad6467SDenis V. Lunev res->leaks += count; 44449ad6467SDenis V. Lunev if (fix & BDRV_FIX_LEAKS) { 4459a4f4c31SKevin Wolf ret = bdrv_truncate(bs->file->bs, res->image_end_offset); 44649ad6467SDenis V. Lunev if (ret < 0) { 44749ad6467SDenis V. Lunev res->check_errors++; 44849ad6467SDenis V. Lunev return ret; 44949ad6467SDenis V. Lunev } 45049ad6467SDenis V. Lunev res->leaks_fixed += count; 45149ad6467SDenis V. Lunev } 45249ad6467SDenis V. Lunev } 45349ad6467SDenis V. Lunev 45449ad6467SDenis V. Lunev return 0; 45549ad6467SDenis V. Lunev } 45649ad6467SDenis V. Lunev 45749ad6467SDenis V. Lunev 45874cf6c50SDenis V. Lunev static int parallels_create(const char *filename, QemuOpts *opts, Error **errp) 45974cf6c50SDenis V. Lunev { 46074cf6c50SDenis V. Lunev int64_t total_size, cl_size; 46174cf6c50SDenis V. Lunev uint8_t tmp[BDRV_SECTOR_SIZE]; 46274cf6c50SDenis V. Lunev Error *local_err = NULL; 46374cf6c50SDenis V. Lunev BlockDriverState *file; 464369f7de9SDenis V. Lunev uint32_t bat_entries, bat_sectors; 46574cf6c50SDenis V. Lunev ParallelsHeader header; 46674cf6c50SDenis V. Lunev int ret; 46774cf6c50SDenis V. Lunev 46874cf6c50SDenis V. Lunev total_size = ROUND_UP(qemu_opt_get_size_del(opts, BLOCK_OPT_SIZE, 0), 46974cf6c50SDenis V. Lunev BDRV_SECTOR_SIZE); 47074cf6c50SDenis V. Lunev cl_size = ROUND_UP(qemu_opt_get_size_del(opts, BLOCK_OPT_CLUSTER_SIZE, 47174cf6c50SDenis V. Lunev DEFAULT_CLUSTER_SIZE), BDRV_SECTOR_SIZE); 47274cf6c50SDenis V. Lunev 47374cf6c50SDenis V. Lunev ret = bdrv_create_file(filename, opts, &local_err); 47474cf6c50SDenis V. Lunev if (ret < 0) { 47574cf6c50SDenis V. Lunev error_propagate(errp, local_err); 47674cf6c50SDenis V. Lunev return ret; 47774cf6c50SDenis V. Lunev } 47874cf6c50SDenis V. Lunev 47974cf6c50SDenis V. Lunev file = NULL; 48074cf6c50SDenis V. Lunev ret = bdrv_open(&file, filename, NULL, NULL, 4816ebf9aa2SMax Reitz BDRV_O_RDWR | BDRV_O_PROTOCOL, &local_err); 48274cf6c50SDenis V. Lunev if (ret < 0) { 48374cf6c50SDenis V. Lunev error_propagate(errp, local_err); 48474cf6c50SDenis V. Lunev return ret; 48574cf6c50SDenis V. Lunev } 48674cf6c50SDenis V. Lunev ret = bdrv_truncate(file, 0); 48774cf6c50SDenis V. Lunev if (ret < 0) { 48874cf6c50SDenis V. Lunev goto exit; 48974cf6c50SDenis V. Lunev } 49074cf6c50SDenis V. Lunev 491369f7de9SDenis V. Lunev bat_entries = DIV_ROUND_UP(total_size, cl_size); 4922d68e22eSDenis V. Lunev bat_sectors = DIV_ROUND_UP(bat_entry_off(bat_entries), cl_size); 493369f7de9SDenis V. Lunev bat_sectors = (bat_sectors * cl_size) >> BDRV_SECTOR_BITS; 49474cf6c50SDenis V. Lunev 49574cf6c50SDenis V. Lunev memset(&header, 0, sizeof(header)); 49674cf6c50SDenis V. Lunev memcpy(header.magic, HEADER_MAGIC2, sizeof(header.magic)); 49774cf6c50SDenis V. Lunev header.version = cpu_to_le32(HEADER_VERSION); 49874cf6c50SDenis V. Lunev /* don't care much about geometry, it is not used on image level */ 49974cf6c50SDenis V. Lunev header.heads = cpu_to_le32(16); 50074cf6c50SDenis V. Lunev header.cylinders = cpu_to_le32(total_size / BDRV_SECTOR_SIZE / 16 / 32); 50174cf6c50SDenis V. Lunev header.tracks = cpu_to_le32(cl_size >> BDRV_SECTOR_BITS); 502369f7de9SDenis V. Lunev header.bat_entries = cpu_to_le32(bat_entries); 50374cf6c50SDenis V. Lunev header.nb_sectors = cpu_to_le64(DIV_ROUND_UP(total_size, BDRV_SECTOR_SIZE)); 504369f7de9SDenis V. Lunev header.data_off = cpu_to_le32(bat_sectors); 50574cf6c50SDenis V. Lunev 50674cf6c50SDenis V. Lunev /* write all the data */ 50774cf6c50SDenis V. Lunev memset(tmp, 0, sizeof(tmp)); 50874cf6c50SDenis V. Lunev memcpy(tmp, &header, sizeof(header)); 50974cf6c50SDenis V. Lunev 51074cf6c50SDenis V. Lunev ret = bdrv_pwrite(file, 0, tmp, BDRV_SECTOR_SIZE); 51174cf6c50SDenis V. Lunev if (ret < 0) { 51274cf6c50SDenis V. Lunev goto exit; 51374cf6c50SDenis V. Lunev } 514369f7de9SDenis V. Lunev ret = bdrv_write_zeroes(file, 1, bat_sectors - 1, 0); 51574cf6c50SDenis V. Lunev if (ret < 0) { 51674cf6c50SDenis V. Lunev goto exit; 51774cf6c50SDenis V. Lunev } 51874cf6c50SDenis V. Lunev ret = 0; 51974cf6c50SDenis V. Lunev 52074cf6c50SDenis V. Lunev done: 52174cf6c50SDenis V. Lunev bdrv_unref(file); 52274cf6c50SDenis V. Lunev return ret; 52374cf6c50SDenis V. Lunev 52474cf6c50SDenis V. Lunev exit: 52574cf6c50SDenis V. Lunev error_setg_errno(errp, -ret, "Failed to create Parallels image"); 52674cf6c50SDenis V. Lunev goto done; 52774cf6c50SDenis V. Lunev } 52874cf6c50SDenis V. Lunev 52923d6bd3bSDenis V. Lunev 53023d6bd3bSDenis V. Lunev static int parallels_probe(const uint8_t *buf, int buf_size, 53123d6bd3bSDenis V. Lunev const char *filename) 53223d6bd3bSDenis V. Lunev { 53323d6bd3bSDenis V. Lunev const ParallelsHeader *ph = (const void *)buf; 53423d6bd3bSDenis V. Lunev 53523d6bd3bSDenis V. Lunev if (buf_size < sizeof(ParallelsHeader)) { 53623d6bd3bSDenis V. Lunev return 0; 53723d6bd3bSDenis V. Lunev } 53823d6bd3bSDenis V. Lunev 53923d6bd3bSDenis V. Lunev if ((!memcmp(ph->magic, HEADER_MAGIC, 16) || 54023d6bd3bSDenis V. Lunev !memcmp(ph->magic, HEADER_MAGIC2, 16)) && 54123d6bd3bSDenis V. Lunev (le32_to_cpu(ph->version) == HEADER_VERSION)) { 54223d6bd3bSDenis V. Lunev return 100; 54323d6bd3bSDenis V. Lunev } 54423d6bd3bSDenis V. Lunev 54523d6bd3bSDenis V. Lunev return 0; 54623d6bd3bSDenis V. Lunev } 54723d6bd3bSDenis V. Lunev 5486dd6b9f1SDenis V. Lunev static int parallels_update_header(BlockDriverState *bs) 5496dd6b9f1SDenis V. Lunev { 5506dd6b9f1SDenis V. Lunev BDRVParallelsState *s = bs->opaque; 5519a4f4c31SKevin Wolf unsigned size = MAX(bdrv_opt_mem_align(bs->file->bs), 5529a4f4c31SKevin Wolf sizeof(ParallelsHeader)); 5536dd6b9f1SDenis V. Lunev 5546dd6b9f1SDenis V. Lunev if (size > s->header_size) { 5556dd6b9f1SDenis V. Lunev size = s->header_size; 5566dd6b9f1SDenis V. Lunev } 5579a4f4c31SKevin Wolf return bdrv_pwrite_sync(bs->file->bs, 0, s->header, size); 5586dd6b9f1SDenis V. Lunev } 5596dd6b9f1SDenis V. Lunev 56023d6bd3bSDenis V. Lunev static int parallels_open(BlockDriverState *bs, QDict *options, int flags, 56123d6bd3bSDenis V. Lunev Error **errp) 56223d6bd3bSDenis V. Lunev { 56323d6bd3bSDenis V. Lunev BDRVParallelsState *s = bs->opaque; 56423d6bd3bSDenis V. Lunev ParallelsHeader ph; 56519f5dc15SDenis V. Lunev int ret, size, i; 566d6179011SDenis V. Lunev QemuOpts *opts = NULL; 567d6179011SDenis V. Lunev Error *local_err = NULL; 568d6179011SDenis V. Lunev char *buf; 56923d6bd3bSDenis V. Lunev 5709a4f4c31SKevin Wolf ret = bdrv_pread(bs->file->bs, 0, &ph, sizeof(ph)); 57123d6bd3bSDenis V. Lunev if (ret < 0) { 57223d6bd3bSDenis V. Lunev goto fail; 57323d6bd3bSDenis V. Lunev } 57423d6bd3bSDenis V. Lunev 57523d6bd3bSDenis V. Lunev bs->total_sectors = le64_to_cpu(ph.nb_sectors); 57623d6bd3bSDenis V. Lunev 57723d6bd3bSDenis V. Lunev if (le32_to_cpu(ph.version) != HEADER_VERSION) { 57823d6bd3bSDenis V. Lunev goto fail_format; 57923d6bd3bSDenis V. Lunev } 58023d6bd3bSDenis V. Lunev if (!memcmp(ph.magic, HEADER_MAGIC, 16)) { 58123d6bd3bSDenis V. Lunev s->off_multiplier = 1; 58223d6bd3bSDenis V. Lunev bs->total_sectors = 0xffffffff & bs->total_sectors; 58323d6bd3bSDenis V. Lunev } else if (!memcmp(ph.magic, HEADER_MAGIC2, 16)) { 58423d6bd3bSDenis V. Lunev s->off_multiplier = le32_to_cpu(ph.tracks); 58523d6bd3bSDenis V. Lunev } else { 58623d6bd3bSDenis V. Lunev goto fail_format; 58723d6bd3bSDenis V. Lunev } 58823d6bd3bSDenis V. Lunev 58923d6bd3bSDenis V. Lunev s->tracks = le32_to_cpu(ph.tracks); 59023d6bd3bSDenis V. Lunev if (s->tracks == 0) { 59123d6bd3bSDenis V. Lunev error_setg(errp, "Invalid image: Zero sectors per track"); 59223d6bd3bSDenis V. Lunev ret = -EINVAL; 59323d6bd3bSDenis V. Lunev goto fail; 59423d6bd3bSDenis V. Lunev } 59523d6bd3bSDenis V. Lunev if (s->tracks > INT32_MAX/513) { 59623d6bd3bSDenis V. Lunev error_setg(errp, "Invalid image: Too big cluster"); 59723d6bd3bSDenis V. Lunev ret = -EFBIG; 59823d6bd3bSDenis V. Lunev goto fail; 59923d6bd3bSDenis V. Lunev } 60023d6bd3bSDenis V. Lunev 60123d6bd3bSDenis V. Lunev s->bat_size = le32_to_cpu(ph.bat_entries); 60223d6bd3bSDenis V. Lunev if (s->bat_size > INT_MAX / sizeof(uint32_t)) { 60323d6bd3bSDenis V. Lunev error_setg(errp, "Catalog too large"); 60423d6bd3bSDenis V. Lunev ret = -EFBIG; 60523d6bd3bSDenis V. Lunev goto fail; 60623d6bd3bSDenis V. Lunev } 60723d6bd3bSDenis V. Lunev 6082d68e22eSDenis V. Lunev size = bat_entry_off(s->bat_size); 6099a4f4c31SKevin Wolf s->header_size = ROUND_UP(size, bdrv_opt_mem_align(bs->file->bs)); 6109a4f4c31SKevin Wolf s->header = qemu_try_blockalign(bs->file->bs, s->header_size); 61123d6bd3bSDenis V. Lunev if (s->header == NULL) { 61223d6bd3bSDenis V. Lunev ret = -ENOMEM; 61323d6bd3bSDenis V. Lunev goto fail; 61423d6bd3bSDenis V. Lunev } 61519f5dc15SDenis V. Lunev s->data_end = le32_to_cpu(ph.data_off); 61619f5dc15SDenis V. Lunev if (s->data_end == 0) { 61719f5dc15SDenis V. Lunev s->data_end = ROUND_UP(bat_entry_off(s->bat_size), BDRV_SECTOR_SIZE); 61819f5dc15SDenis V. Lunev } 61919f5dc15SDenis V. Lunev if (s->data_end < s->header_size) { 62023d6bd3bSDenis V. Lunev /* there is not enough unused space to fit to block align between BAT 62123d6bd3bSDenis V. Lunev and actual data. We can't avoid read-modify-write... */ 62223d6bd3bSDenis V. Lunev s->header_size = size; 62323d6bd3bSDenis V. Lunev } 62423d6bd3bSDenis V. Lunev 6259a4f4c31SKevin Wolf ret = bdrv_pread(bs->file->bs, 0, s->header, s->header_size); 62623d6bd3bSDenis V. Lunev if (ret < 0) { 62723d6bd3bSDenis V. Lunev goto fail; 62823d6bd3bSDenis V. Lunev } 62923d6bd3bSDenis V. Lunev s->bat_bitmap = (uint32_t *)(s->header + 1); 63023d6bd3bSDenis V. Lunev 63119f5dc15SDenis V. Lunev for (i = 0; i < s->bat_size; i++) { 63219f5dc15SDenis V. Lunev int64_t off = bat2sect(s, i); 63319f5dc15SDenis V. Lunev if (off >= s->data_end) { 63419f5dc15SDenis V. Lunev s->data_end = off + s->tracks; 63519f5dc15SDenis V. Lunev } 63619f5dc15SDenis V. Lunev } 63719f5dc15SDenis V. Lunev 6386dd6b9f1SDenis V. Lunev if (le32_to_cpu(ph.inuse) == HEADER_INUSE_MAGIC) { 6396dd6b9f1SDenis V. Lunev /* Image was not closed correctly. The check is mandatory */ 6406dd6b9f1SDenis V. Lunev s->header_unclean = true; 6416dd6b9f1SDenis V. Lunev if ((flags & BDRV_O_RDWR) && !(flags & BDRV_O_CHECK)) { 6426dd6b9f1SDenis V. Lunev error_setg(errp, "parallels: Image was not closed correctly; " 6436dd6b9f1SDenis V. Lunev "cannot be opened read/write"); 6446dd6b9f1SDenis V. Lunev ret = -EACCES; 6456dd6b9f1SDenis V. Lunev goto fail; 6466dd6b9f1SDenis V. Lunev } 6476dd6b9f1SDenis V. Lunev } 6486dd6b9f1SDenis V. Lunev 649d6179011SDenis V. Lunev opts = qemu_opts_create(¶llels_runtime_opts, NULL, 0, &local_err); 650d6179011SDenis V. Lunev if (local_err != NULL) { 651d6179011SDenis V. Lunev goto fail_options; 652d6179011SDenis V. Lunev } 653d6179011SDenis V. Lunev 654d6179011SDenis V. Lunev qemu_opts_absorb_qdict(opts, options, &local_err); 655d6179011SDenis V. Lunev if (local_err != NULL) { 656d6179011SDenis V. Lunev goto fail_options; 657d6179011SDenis V. Lunev } 658d6179011SDenis V. Lunev 659d6179011SDenis V. Lunev s->prealloc_size = 660d6179011SDenis V. Lunev qemu_opt_get_size_del(opts, PARALLELS_OPT_PREALLOC_SIZE, 0); 661d6179011SDenis V. Lunev s->prealloc_size = MAX(s->tracks, s->prealloc_size >> BDRV_SECTOR_BITS); 662d6179011SDenis V. Lunev buf = qemu_opt_get_del(opts, PARALLELS_OPT_PREALLOC_MODE); 663d6179011SDenis V. Lunev s->prealloc_mode = qapi_enum_parse(prealloc_mode_lookup, buf, 6647fb1cf16SEric Blake PRL_PREALLOC_MODE__MAX, PRL_PREALLOC_MODE_FALLOCATE, &local_err); 665d6179011SDenis V. Lunev g_free(buf); 666d6179011SDenis V. Lunev if (local_err != NULL) { 667d6179011SDenis V. Lunev goto fail_options; 668d6179011SDenis V. Lunev } 6699a4f4c31SKevin Wolf if (!bdrv_has_zero_init(bs->file->bs) || 6709a4f4c31SKevin Wolf bdrv_truncate(bs->file->bs, bdrv_getlength(bs->file->bs)) != 0) { 671d6179011SDenis V. Lunev s->prealloc_mode = PRL_PREALLOC_MODE_FALLOCATE; 672d6179011SDenis V. Lunev } 673d6179011SDenis V. Lunev 6746dd6b9f1SDenis V. Lunev if (flags & BDRV_O_RDWR) { 6756dd6b9f1SDenis V. Lunev s->header->inuse = cpu_to_le32(HEADER_INUSE_MAGIC); 6766dd6b9f1SDenis V. Lunev ret = parallels_update_header(bs); 6776dd6b9f1SDenis V. Lunev if (ret < 0) { 6786dd6b9f1SDenis V. Lunev goto fail; 6796dd6b9f1SDenis V. Lunev } 6806dd6b9f1SDenis V. Lunev } 6816dd6b9f1SDenis V. Lunev 6820d31c7c2SDenis V. Lunev s->bat_dirty_block = 4 * getpagesize(); 6830d31c7c2SDenis V. Lunev s->bat_dirty_bmap = 6840d31c7c2SDenis V. Lunev bitmap_new(DIV_ROUND_UP(s->header_size, s->bat_dirty_block)); 6850d31c7c2SDenis V. Lunev 68623d6bd3bSDenis V. Lunev qemu_co_mutex_init(&s->lock); 68723d6bd3bSDenis V. Lunev return 0; 68823d6bd3bSDenis V. Lunev 68923d6bd3bSDenis V. Lunev fail_format: 69023d6bd3bSDenis V. Lunev error_setg(errp, "Image not in Parallels format"); 69123d6bd3bSDenis V. Lunev ret = -EINVAL; 69223d6bd3bSDenis V. Lunev fail: 69323d6bd3bSDenis V. Lunev qemu_vfree(s->header); 69423d6bd3bSDenis V. Lunev return ret; 695d6179011SDenis V. Lunev 696d6179011SDenis V. Lunev fail_options: 697d6179011SDenis V. Lunev error_propagate(errp, local_err); 698d6179011SDenis V. Lunev ret = -EINVAL; 699d6179011SDenis V. Lunev goto fail; 70023d6bd3bSDenis V. Lunev } 70123d6bd3bSDenis V. Lunev 70223d6bd3bSDenis V. Lunev 703019d6b8fSAnthony Liguori static void parallels_close(BlockDriverState *bs) 704019d6b8fSAnthony Liguori { 705019d6b8fSAnthony Liguori BDRVParallelsState *s = bs->opaque; 7066dd6b9f1SDenis V. Lunev 7076dd6b9f1SDenis V. Lunev if (bs->open_flags & BDRV_O_RDWR) { 7086dd6b9f1SDenis V. Lunev s->header->inuse = 0; 7096dd6b9f1SDenis V. Lunev parallels_update_header(bs); 7106dd6b9f1SDenis V. Lunev } 7116dd6b9f1SDenis V. Lunev 71219f5dc15SDenis V. Lunev if (bs->open_flags & BDRV_O_RDWR) { 7139a4f4c31SKevin Wolf bdrv_truncate(bs->file->bs, s->data_end << BDRV_SECTOR_BITS); 71419f5dc15SDenis V. Lunev } 71519f5dc15SDenis V. Lunev 7160d31c7c2SDenis V. Lunev g_free(s->bat_dirty_bmap); 7179eae9ccaSDenis V. Lunev qemu_vfree(s->header); 718019d6b8fSAnthony Liguori } 719019d6b8fSAnthony Liguori 72074cf6c50SDenis V. Lunev static QemuOptsList parallels_create_opts = { 72174cf6c50SDenis V. Lunev .name = "parallels-create-opts", 72274cf6c50SDenis V. Lunev .head = QTAILQ_HEAD_INITIALIZER(parallels_create_opts.head), 72374cf6c50SDenis V. Lunev .desc = { 72474cf6c50SDenis V. Lunev { 72574cf6c50SDenis V. Lunev .name = BLOCK_OPT_SIZE, 72674cf6c50SDenis V. Lunev .type = QEMU_OPT_SIZE, 72774cf6c50SDenis V. Lunev .help = "Virtual disk size", 72874cf6c50SDenis V. Lunev }, 72974cf6c50SDenis V. Lunev { 73074cf6c50SDenis V. Lunev .name = BLOCK_OPT_CLUSTER_SIZE, 73174cf6c50SDenis V. Lunev .type = QEMU_OPT_SIZE, 73274cf6c50SDenis V. Lunev .help = "Parallels image cluster size", 73374cf6c50SDenis V. Lunev .def_value_str = stringify(DEFAULT_CLUSTER_SIZE), 73474cf6c50SDenis V. Lunev }, 73574cf6c50SDenis V. Lunev { /* end of list */ } 73674cf6c50SDenis V. Lunev } 73774cf6c50SDenis V. Lunev }; 73874cf6c50SDenis V. Lunev 739019d6b8fSAnthony Liguori static BlockDriver bdrv_parallels = { 740019d6b8fSAnthony Liguori .format_name = "parallels", 741019d6b8fSAnthony Liguori .instance_size = sizeof(BDRVParallelsState), 742019d6b8fSAnthony Liguori .bdrv_probe = parallels_probe, 7431dec5a70SChristoph Hellwig .bdrv_open = parallels_open, 744019d6b8fSAnthony Liguori .bdrv_close = parallels_close, 745dd3bed16SRoman Kagan .bdrv_co_get_block_status = parallels_co_get_block_status, 746d0e61ce5SDenis V. Lunev .bdrv_has_zero_init = bdrv_has_zero_init_1, 7470d31c7c2SDenis V. Lunev .bdrv_co_flush_to_os = parallels_co_flush_to_os, 748481fb9cfSDenis V. Lunev .bdrv_co_readv = parallels_co_readv, 7495a41e1faSDenis V. Lunev .bdrv_co_writev = parallels_co_writev, 75074cf6c50SDenis V. Lunev 75174cf6c50SDenis V. Lunev .bdrv_create = parallels_create, 75249ad6467SDenis V. Lunev .bdrv_check = parallels_check, 75374cf6c50SDenis V. Lunev .create_opts = ¶llels_create_opts, 754019d6b8fSAnthony Liguori }; 755019d6b8fSAnthony Liguori 756019d6b8fSAnthony Liguori static void bdrv_parallels_init(void) 757019d6b8fSAnthony Liguori { 758019d6b8fSAnthony Liguori bdrv_register(&bdrv_parallels); 759019d6b8fSAnthony Liguori } 760019d6b8fSAnthony Liguori 761019d6b8fSAnthony Liguori block_init(bdrv_parallels_init); 762