diff options
Diffstat (limited to 'qemu/block/vmdk.c')
| -rw-r--r-- | qemu/block/vmdk.c | 358 |
1 files changed, 203 insertions, 155 deletions
diff --git a/qemu/block/vmdk.c b/qemu/block/vmdk.c index fbaab67c8..45f9d3c5b 100644 --- a/qemu/block/vmdk.c +++ b/qemu/block/vmdk.c @@ -23,12 +23,15 @@ * THE SOFTWARE. */ -#include "qemu-common.h" +#include "qemu/osdep.h" +#include "qapi/error.h" #include "block/block_int.h" +#include "sysemu/block-backend.h" #include "qapi/qmp/qerror.h" #include "qemu/error-report.h" #include "qemu/module.h" #include "migration/migration.h" +#include "qemu/cutils.h" #include <zlib.h> #include <glib.h> @@ -87,7 +90,7 @@ typedef struct { #define L2_CACHE_SIZE 16 typedef struct VmdkExtent { - BlockDriverState *file; + BdrvChild *file; bool flat; bool compressed; bool has_marker; @@ -222,7 +225,7 @@ static void vmdk_free_extents(BlockDriverState *bs) g_free(e->l1_backup_table); g_free(e->type); if (e->file != bs->file) { - bdrv_unref(e->file); + bdrv_unref_child(bs, e->file); } } g_free(s->extents); @@ -241,15 +244,17 @@ static void vmdk_free_last_extent(BlockDriverState *bs) static uint32_t vmdk_read_cid(BlockDriverState *bs, int parent) { - char desc[DESC_SIZE]; + char *desc; uint32_t cid = 0xffffffff; const char *p_name, *cid_str; size_t cid_str_size; BDRVVmdkState *s = bs->opaque; int ret; - ret = bdrv_pread(bs->file, s->desc_offset, desc, DESC_SIZE); + desc = g_malloc0(DESC_SIZE); + ret = bdrv_pread(bs->file->bs, s->desc_offset, desc, DESC_SIZE); if (ret < 0) { + g_free(desc); return 0; } @@ -268,50 +273,55 @@ static uint32_t vmdk_read_cid(BlockDriverState *bs, int parent) sscanf(p_name, "%" SCNx32, &cid); } + g_free(desc); return cid; } static int vmdk_write_cid(BlockDriverState *bs, uint32_t cid) { - char desc[DESC_SIZE], tmp_desc[DESC_SIZE]; + char *desc, *tmp_desc; char *p_name, *tmp_str; BDRVVmdkState *s = bs->opaque; - int ret; + int ret = 0; - ret = bdrv_pread(bs->file, s->desc_offset, desc, DESC_SIZE); + desc = g_malloc0(DESC_SIZE); + tmp_desc = g_malloc0(DESC_SIZE); + ret = bdrv_pread(bs->file->bs, s->desc_offset, desc, DESC_SIZE); if (ret < 0) { - return ret; + goto out; } desc[DESC_SIZE - 1] = '\0'; tmp_str = strstr(desc, "parentCID"); if (tmp_str == NULL) { - return -EINVAL; + ret = -EINVAL; + goto out; } - pstrcpy(tmp_desc, sizeof(tmp_desc), tmp_str); + pstrcpy(tmp_desc, DESC_SIZE, tmp_str); p_name = strstr(desc, "CID"); if (p_name != NULL) { p_name += sizeof("CID"); - snprintf(p_name, sizeof(desc) - (p_name - desc), "%" PRIx32 "\n", cid); - pstrcat(desc, sizeof(desc), tmp_desc); + snprintf(p_name, DESC_SIZE - (p_name - desc), "%" PRIx32 "\n", cid); + pstrcat(desc, DESC_SIZE, tmp_desc); } - ret = bdrv_pwrite_sync(bs->file, s->desc_offset, desc, DESC_SIZE); - if (ret < 0) { - return ret; - } + ret = bdrv_pwrite_sync(bs->file->bs, s->desc_offset, desc, DESC_SIZE); - return 0; +out: + g_free(desc); + g_free(tmp_desc); + return ret; } static int vmdk_is_cid_valid(BlockDriverState *bs) { BDRVVmdkState *s = bs->opaque; - BlockDriverState *p_bs = bs->backing_hd; uint32_t cur_pcid; - if (!s->cid_checked && p_bs) { + if (!s->cid_checked && bs->backing) { + BlockDriverState *p_bs = bs->backing->bs; + cur_pcid = vmdk_read_cid(p_bs, 0); if (s->parent_cid != cur_pcid) { /* CID not valid */ @@ -335,15 +345,16 @@ static int vmdk_reopen_prepare(BDRVReopenState *state, static int vmdk_parent_open(BlockDriverState *bs) { char *p_name; - char desc[DESC_SIZE + 1]; + char *desc; BDRVVmdkState *s = bs->opaque; int ret; - desc[DESC_SIZE] = '\0'; - ret = bdrv_pread(bs->file, s->desc_offset, desc, DESC_SIZE); + desc = g_malloc0(DESC_SIZE + 1); + ret = bdrv_pread(bs->file->bs, s->desc_offset, desc, DESC_SIZE); if (ret < 0) { - return ret; + goto out; } + ret = 0; p_name = strstr(desc, "parentFileNameHint"); if (p_name != NULL) { @@ -352,22 +363,26 @@ static int vmdk_parent_open(BlockDriverState *bs) p_name += sizeof("parentFileNameHint") + 1; end_name = strchr(p_name, '\"'); if (end_name == NULL) { - return -EINVAL; + ret = -EINVAL; + goto out; } if ((end_name - p_name) > sizeof(bs->backing_file) - 1) { - return -EINVAL; + ret = -EINVAL; + goto out; } pstrcpy(bs->backing_file, end_name - p_name + 1, p_name); } - return 0; +out: + g_free(desc); + return ret; } /* Create and append extent to the extent array. Return the added VmdkExtent * address. return NULL if allocation failed. */ static int vmdk_add_extent(BlockDriverState *bs, - BlockDriverState *file, bool flat, int64_t sectors, + BdrvChild *file, bool flat, int64_t sectors, int64_t l1_offset, int64_t l1_backup_offset, uint32_t l1_size, int l2_size, uint64_t cluster_sectors, @@ -392,7 +407,7 @@ static int vmdk_add_extent(BlockDriverState *bs, return -EFBIG; } - nb_sectors = bdrv_nb_sectors(file); + nb_sectors = bdrv_nb_sectors(file->bs); if (nb_sectors < 0) { return nb_sectors; } @@ -439,14 +454,14 @@ static int vmdk_init_tables(BlockDriverState *bs, VmdkExtent *extent, return -ENOMEM; } - ret = bdrv_pread(extent->file, + ret = bdrv_pread(extent->file->bs, extent->l1_table_offset, extent->l1_table, l1_size); if (ret < 0) { error_setg_errno(errp, -ret, "Could not read l1 table from extent '%s'", - extent->file->filename); + extent->file->bs->filename); goto fail_l1; } for (i = 0; i < extent->l1_size; i++) { @@ -459,14 +474,14 @@ static int vmdk_init_tables(BlockDriverState *bs, VmdkExtent *extent, ret = -ENOMEM; goto fail_l1; } - ret = bdrv_pread(extent->file, + ret = bdrv_pread(extent->file->bs, extent->l1_backup_table_offset, extent->l1_backup_table, l1_size); if (ret < 0) { error_setg_errno(errp, -ret, "Could not read l1 backup table from extent '%s'", - extent->file->filename); + extent->file->bs->filename); goto fail_l1b; } for (i = 0; i < extent->l1_size; i++) { @@ -485,7 +500,7 @@ static int vmdk_init_tables(BlockDriverState *bs, VmdkExtent *extent, } static int vmdk_open_vmfs_sparse(BlockDriverState *bs, - BlockDriverState *file, + BdrvChild *file, int flags, Error **errp) { int ret; @@ -493,11 +508,11 @@ static int vmdk_open_vmfs_sparse(BlockDriverState *bs, VMDK3Header header; VmdkExtent *extent; - ret = bdrv_pread(file, sizeof(magic), &header, sizeof(header)); + ret = bdrv_pread(file->bs, sizeof(magic), &header, sizeof(header)); if (ret < 0) { error_setg_errno(errp, -ret, "Could not read header from file '%s'", - file->filename); + file->bs->filename); return ret; } ret = vmdk_add_extent(bs, file, false, @@ -559,7 +574,7 @@ static char *vmdk_read_desc(BlockDriverState *file, uint64_t desc_offset, } static int vmdk_open_vmdk4(BlockDriverState *bs, - BlockDriverState *file, + BdrvChild *file, int flags, QDict *options, Error **errp) { int ret; @@ -569,18 +584,19 @@ static int vmdk_open_vmdk4(BlockDriverState *bs, VmdkExtent *extent; BDRVVmdkState *s = bs->opaque; int64_t l1_backup_offset = 0; + bool compressed; - ret = bdrv_pread(file, sizeof(magic), &header, sizeof(header)); + ret = bdrv_pread(file->bs, sizeof(magic), &header, sizeof(header)); if (ret < 0) { error_setg_errno(errp, -ret, "Could not read header from file '%s'", - file->filename); + file->bs->filename); return -EINVAL; } if (header.capacity == 0) { uint64_t desc_offset = le64_to_cpu(header.desc_offset); if (desc_offset) { - char *buf = vmdk_read_desc(file, desc_offset << 9, errp); + char *buf = vmdk_read_desc(file->bs, desc_offset << 9, errp); if (!buf) { return -EINVAL; } @@ -620,8 +636,8 @@ static int vmdk_open_vmdk4(BlockDriverState *bs, } QEMU_PACKED eos_marker; } QEMU_PACKED footer; - ret = bdrv_pread(file, - bs->file->total_sectors * 512 - 1536, + ret = bdrv_pread(file->bs, + bs->file->bs->total_sectors * 512 - 1536, &footer, sizeof(footer)); if (ret < 0) { error_setg_errno(errp, -ret, "Failed to read footer"); @@ -643,14 +659,14 @@ static int vmdk_open_vmdk4(BlockDriverState *bs, header = footer.header; } + compressed = + le16_to_cpu(header.compressAlgorithm) == VMDK4_COMPRESSION_DEFLATE; if (le32_to_cpu(header.version) > 3) { - char buf[64]; - snprintf(buf, sizeof(buf), "VMDK version %" PRId32, - le32_to_cpu(header.version)); - error_setg(errp, QERR_UNKNOWN_BLOCK_FORMAT_FEATURE, - bdrv_get_device_or_node_name(bs), "vmdk", buf); + error_setg(errp, "Unsupported VMDK version %" PRIu32, + le32_to_cpu(header.version)); return -ENOTSUP; - } else if (le32_to_cpu(header.version) == 3 && (flags & BDRV_O_RDWR)) { + } else if (le32_to_cpu(header.version) == 3 && (flags & BDRV_O_RDWR) && + !compressed) { /* VMware KB 2064959 explains that version 3 added support for * persistent changed block tracking (CBT), and backup software can * read it as version=1 if it doesn't care about the changed area @@ -675,7 +691,7 @@ static int vmdk_open_vmdk4(BlockDriverState *bs, if (le32_to_cpu(header.flags) & VMDK4_FLAG_RGD) { l1_backup_offset = le64_to_cpu(header.rgd_offset) << 9; } - if (bdrv_nb_sectors(file) < le64_to_cpu(header.grain_offset)) { + if (bdrv_nb_sectors(file->bs) < le64_to_cpu(header.grain_offset)) { error_setg(errp, "File truncated, expecting at least %" PRId64 " bytes", (int64_t)(le64_to_cpu(header.grain_offset) * BDRV_SECTOR_SIZE)); @@ -739,8 +755,7 @@ static int vmdk_parse_description(const char *desc, const char *opt_name, } /* Open an extent file and append to bs array */ -static int vmdk_open_sparse(BlockDriverState *bs, - BlockDriverState *file, int flags, +static int vmdk_open_sparse(BlockDriverState *bs, BdrvChild *file, int flags, char *buf, QDict *options, Error **errp) { uint32_t magic; @@ -760,6 +775,17 @@ static int vmdk_open_sparse(BlockDriverState *bs, } } +static const char *next_line(const char *s) +{ + while (*s) { + if (*s == '\n') { + return s + 1; + } + s++; + } + return s; +} + static int vmdk_parse_extents(const char *desc, BlockDriverState *bs, const char *desc_file_path, QDict *options, Error **errp) @@ -769,16 +795,17 @@ static int vmdk_parse_extents(const char *desc, BlockDriverState *bs, char access[11]; char type[11]; char fname[512]; - const char *p = desc; + const char *p, *np; int64_t sectors = 0; int64_t flat_offset; char *extent_path; - BlockDriverState *extent_file; + BdrvChild *extent_file; BDRVVmdkState *s = bs->opaque; VmdkExtent *extent; char extent_opt_prefix[32]; + Error *local_err = NULL; - while (*p) { + for (p = desc; *p; p = next_line(p)) { /* parse extent line in one of below formats: * * RW [size in sectors] FLAT "file-name.vmdk" OFFSET @@ -790,51 +817,48 @@ static int vmdk_parse_extents(const char *desc, BlockDriverState *bs, matches = sscanf(p, "%10s %" SCNd64 " %10s \"%511[^\n\r\"]\" %" SCNd64, access, §ors, type, fname, &flat_offset); if (matches < 4 || strcmp(access, "RW")) { - goto next_line; + continue; } else if (!strcmp(type, "FLAT")) { if (matches != 5 || flat_offset < 0) { - error_setg(errp, "Invalid extent lines: \n%s", p); - return -EINVAL; + goto invalid; } } else if (!strcmp(type, "VMFS")) { if (matches == 4) { flat_offset = 0; } else { - error_setg(errp, "Invalid extent lines:\n%s", p); - return -EINVAL; + goto invalid; } } else if (matches != 4) { - error_setg(errp, "Invalid extent lines:\n%s", p); - return -EINVAL; + goto invalid; } if (sectors <= 0 || (strcmp(type, "FLAT") && strcmp(type, "SPARSE") && strcmp(type, "VMFS") && strcmp(type, "VMFSSPARSE")) || (strcmp(access, "RW"))) { - goto next_line; + continue; } if (!path_is_absolute(fname) && !path_has_protocol(fname) && !desc_file_path[0]) { error_setg(errp, "Cannot use relative extent paths with VMDK " - "descriptor file '%s'", bs->file->filename); + "descriptor file '%s'", bs->file->bs->filename); return -EINVAL; } extent_path = g_malloc0(PATH_MAX); path_combine(extent_path, PATH_MAX, desc_file_path, fname); - extent_file = NULL; ret = snprintf(extent_opt_prefix, 32, "extents.%d", s->num_extents); assert(ret < 32); - ret = bdrv_open_image(&extent_file, extent_path, options, - extent_opt_prefix, bs, &child_file, false, errp); + extent_file = bdrv_open_child(extent_path, options, extent_opt_prefix, + bs, &child_file, false, &local_err); g_free(extent_path); - if (ret) { - return ret; + if (local_err) { + error_propagate(errp, local_err); + return -EINVAL; } /* save to extents array */ @@ -844,13 +868,13 @@ static int vmdk_parse_extents(const char *desc, BlockDriverState *bs, ret = vmdk_add_extent(bs, extent_file, true, sectors, 0, 0, 0, 0, 0, &extent, errp); if (ret < 0) { - bdrv_unref(extent_file); + bdrv_unref_child(bs, extent_file); return ret; } extent->flat_start_offset = flat_offset << 9; } else if (!strcmp(type, "SPARSE") || !strcmp(type, "VMFSSPARSE")) { /* SPARSE extent and VMFSSPARSE extent are both "COWD" sparse file*/ - char *buf = vmdk_read_desc(extent_file, 0, errp); + char *buf = vmdk_read_desc(extent_file->bs, 0, errp); if (!buf) { ret = -EINVAL; } else { @@ -859,27 +883,27 @@ static int vmdk_parse_extents(const char *desc, BlockDriverState *bs, } g_free(buf); if (ret) { - bdrv_unref(extent_file); + bdrv_unref_child(bs, extent_file); return ret; } extent = &s->extents[s->num_extents - 1]; } else { error_setg(errp, "Unsupported extent type '%s'", type); - bdrv_unref(extent_file); + bdrv_unref_child(bs, extent_file); return -ENOTSUP; } extent->type = g_strdup(type); -next_line: - /* move to next line */ - while (*p) { - if (*p == '\n') { - p++; - break; - } - p++; - } } return 0; + +invalid: + np = next_line(p); + assert(np != p); + if (np[-1] == '\n') { + np--; + } + error_setg(errp, "Invalid extent line: %.*s", (int)(np - p), p); + return -EINVAL; } static int vmdk_open_desc_file(BlockDriverState *bs, int flags, char *buf, @@ -905,7 +929,8 @@ static int vmdk_open_desc_file(BlockDriverState *bs, int flags, char *buf, } s->create_type = g_strdup(ct); s->desc_offset = 0; - ret = vmdk_parse_extents(buf, bs, bs->file->exact_filename, options, errp); + ret = vmdk_parse_extents(buf, bs, bs->file->bs->exact_filename, options, + errp); exit: return ret; } @@ -918,7 +943,7 @@ static int vmdk_open(BlockDriverState *bs, QDict *options, int flags, BDRVVmdkState *s = bs->opaque; uint32_t magic; - buf = vmdk_read_desc(bs->file, 0, errp); + buf = vmdk_read_desc(bs->file->bs, 0, errp); if (!buf) { return -EINVAL; } @@ -927,7 +952,8 @@ static int vmdk_open(BlockDriverState *bs, QDict *options, int flags, switch (magic) { case VMDK3_MAGIC: case VMDK4_MAGIC: - ret = vmdk_open_sparse(bs, bs->file, flags, buf, options, errp); + ret = vmdk_open_sparse(bs, bs->file, flags, buf, options, + errp); s->desc_offset = 0x200; break; default: @@ -1004,7 +1030,7 @@ static int get_whole_cluster(BlockDriverState *bs, cluster_bytes = extent->cluster_sectors << BDRV_SECTOR_BITS; whole_grain = qemu_blockalign(bs, cluster_bytes); - if (!bs->backing_hd) { + if (!bs->backing) { memset(whole_grain, 0, skip_start_sector << BDRV_SECTOR_BITS); memset(whole_grain + (skip_end_sector << BDRV_SECTOR_BITS), 0, cluster_bytes - (skip_end_sector << BDRV_SECTOR_BITS)); @@ -1013,22 +1039,22 @@ static int get_whole_cluster(BlockDriverState *bs, assert(skip_end_sector <= extent->cluster_sectors); /* we will be here if it's first write on non-exist grain(cluster). * try to read from parent image, if exist */ - if (bs->backing_hd && !vmdk_is_cid_valid(bs)) { + if (bs->backing && !vmdk_is_cid_valid(bs)) { ret = VMDK_ERROR; goto exit; } /* Read backing data before skip range */ if (skip_start_sector > 0) { - if (bs->backing_hd) { - ret = bdrv_read(bs->backing_hd, sector_num, + if (bs->backing) { + ret = bdrv_read(bs->backing->bs, sector_num, whole_grain, skip_start_sector); if (ret < 0) { ret = VMDK_ERROR; goto exit; } } - ret = bdrv_write(extent->file, cluster_sector_num, whole_grain, + ret = bdrv_write(extent->file->bs, cluster_sector_num, whole_grain, skip_start_sector); if (ret < 0) { ret = VMDK_ERROR; @@ -1037,8 +1063,8 @@ static int get_whole_cluster(BlockDriverState *bs, } /* Read backing data after skip range */ if (skip_end_sector < extent->cluster_sectors) { - if (bs->backing_hd) { - ret = bdrv_read(bs->backing_hd, sector_num + skip_end_sector, + if (bs->backing) { + ret = bdrv_read(bs->backing->bs, sector_num + skip_end_sector, whole_grain + (skip_end_sector << BDRV_SECTOR_BITS), extent->cluster_sectors - skip_end_sector); if (ret < 0) { @@ -1046,7 +1072,7 @@ static int get_whole_cluster(BlockDriverState *bs, goto exit; } } - ret = bdrv_write(extent->file, cluster_sector_num + skip_end_sector, + ret = bdrv_write(extent->file->bs, cluster_sector_num + skip_end_sector, whole_grain + (skip_end_sector << BDRV_SECTOR_BITS), extent->cluster_sectors - skip_end_sector); if (ret < 0) { @@ -1066,7 +1092,7 @@ static int vmdk_L2update(VmdkExtent *extent, VmdkMetaData *m_data, offset = cpu_to_le32(offset); /* update L2 table */ if (bdrv_pwrite_sync( - extent->file, + extent->file->bs, ((int64_t)m_data->l2_offset * 512) + (m_data->l2_index * sizeof(offset)), &offset, sizeof(offset)) < 0) { @@ -1076,7 +1102,7 @@ static int vmdk_L2update(VmdkExtent *extent, VmdkMetaData *m_data, if (extent->l1_backup_table_offset != 0) { m_data->l2_offset = extent->l1_backup_table[m_data->l1_index]; if (bdrv_pwrite_sync( - extent->file, + extent->file->bs, ((int64_t)m_data->l2_offset * 512) + (m_data->l2_index * sizeof(offset)), &offset, sizeof(offset)) < 0) { @@ -1166,7 +1192,7 @@ static int get_cluster_offset(BlockDriverState *bs, } l2_table = extent->l2_cache + (min_index * extent->l2_size); if (bdrv_pread( - extent->file, + extent->file->bs, (int64_t)l2_offset * 512, l2_table, extent->l2_size * sizeof(uint32_t) @@ -1245,7 +1271,7 @@ static inline uint64_t vmdk_find_index_in_cluster(VmdkExtent *extent, } static int64_t coroutine_fn vmdk_co_get_block_status(BlockDriverState *bs, - int64_t sector_num, int nb_sectors, int *pnum) + int64_t sector_num, int nb_sectors, int *pnum, BlockDriverState **file) { BDRVVmdkState *s = bs->opaque; int64_t index_in_cluster, n, ret; @@ -1262,6 +1288,7 @@ static int64_t coroutine_fn vmdk_co_get_block_status(BlockDriverState *bs, 0, 0); qemu_co_mutex_unlock(&s->lock); + index_in_cluster = vmdk_find_index_in_cluster(extent, sector_num); switch (ret) { case VMDK_ERROR: ret = -EIO; @@ -1274,14 +1301,15 @@ static int64_t coroutine_fn vmdk_co_get_block_status(BlockDriverState *bs, break; case VMDK_OK: ret = BDRV_BLOCK_DATA; - if (extent->file == bs->file && !extent->compressed) { - ret |= BDRV_BLOCK_OFFSET_VALID | offset; + if (!extent->compressed) { + ret |= BDRV_BLOCK_OFFSET_VALID; + ret |= (offset + (index_in_cluster << BDRV_SECTOR_BITS)) + & BDRV_BLOCK_OFFSET_MASK; } - + *file = extent->file->bs; break; } - index_in_cluster = vmdk_find_index_in_cluster(extent, sector_num); n = extent->cluster_sectors - index_in_cluster; if (n > nb_sectors) { n = nb_sectors; @@ -1320,12 +1348,16 @@ static int vmdk_write_extent(VmdkExtent *extent, int64_t cluster_offset, write_len = buf_len + sizeof(VmdkGrainMarker); } write_offset = cluster_offset + offset_in_cluster, - ret = bdrv_pwrite(extent->file, write_offset, write_buf, write_len); + ret = bdrv_pwrite(extent->file->bs, write_offset, write_buf, write_len); write_end_sector = DIV_ROUND_UP(write_offset + write_len, BDRV_SECTOR_SIZE); - extent->next_cluster_sector = MAX(extent->next_cluster_sector, - write_end_sector); + if (extent->compressed) { + extent->next_cluster_sector = write_end_sector; + } else { + extent->next_cluster_sector = MAX(extent->next_cluster_sector, + write_end_sector); + } if (ret != write_len) { ret = ret < 0 ? ret : -EIO; @@ -1351,7 +1383,7 @@ static int vmdk_read_extent(VmdkExtent *extent, int64_t cluster_offset, if (!extent->compressed) { - ret = bdrv_pread(extent->file, + ret = bdrv_pread(extent->file->bs, cluster_offset + offset_in_cluster, buf, nb_sectors * 512); if (ret == nb_sectors * 512) { @@ -1365,7 +1397,7 @@ static int vmdk_read_extent(VmdkExtent *extent, int64_t cluster_offset, buf_bytes = cluster_bytes * 2; cluster_buf = g_malloc(buf_bytes); uncomp_buf = g_malloc(cluster_bytes); - ret = bdrv_pread(extent->file, + ret = bdrv_pread(extent->file->bs, cluster_offset, cluster_buf, buf_bytes); if (ret < 0) { @@ -1427,11 +1459,11 @@ static int vmdk_read(BlockDriverState *bs, int64_t sector_num, } if (ret != VMDK_OK) { /* if not allocated, try to read from parent image, if exist */ - if (bs->backing_hd && ret != VMDK_ZEROED) { + if (bs->backing && ret != VMDK_ZEROED) { if (!vmdk_is_cid_valid(bs)) { return -EINVAL; } - ret = bdrv_read(bs->backing_hd, sector_num, buf, n); + ret = bdrv_read(bs->backing->bs, sector_num, buf, n); if (ret < 0) { return ret; } @@ -1487,8 +1519,8 @@ static int vmdk_write(BlockDriverState *bs, int64_t sector_num, if (sector_num > bs->total_sectors) { error_report("Wrong offset: sector_num=0x%" PRIx64 - " total_sectors=0x%" PRIx64 "\n", - sector_num, bs->total_sectors); + " total_sectors=0x%" PRIx64, + sector_num, bs->total_sectors); return -EIO; } @@ -1617,7 +1649,7 @@ static int vmdk_create_extent(const char *filename, int64_t filesize, QemuOpts *opts, Error **errp) { int ret, i; - BlockDriverState *bs = NULL; + BlockBackend *blk = NULL; VMDK4Header header; Error *local_err = NULL; uint32_t tmp, magic, grains, gd_sectors, gt_size, gt_count; @@ -1630,16 +1662,18 @@ static int vmdk_create_extent(const char *filename, int64_t filesize, goto exit; } - assert(bs == NULL); - ret = bdrv_open(&bs, filename, NULL, NULL, BDRV_O_RDWR | BDRV_O_PROTOCOL, - NULL, &local_err); - if (ret < 0) { + blk = blk_new_open(filename, NULL, NULL, + BDRV_O_RDWR | BDRV_O_PROTOCOL, &local_err); + if (blk == NULL) { error_propagate(errp, local_err); + ret = -EIO; goto exit; } + blk_set_allow_write_beyond_eof(blk, true); + if (flat) { - ret = bdrv_truncate(bs, filesize); + ret = blk_truncate(blk, filesize); if (ret < 0) { error_setg_errno(errp, -ret, "Could not truncate file"); } @@ -1647,7 +1681,13 @@ static int vmdk_create_extent(const char *filename, int64_t filesize, } magic = cpu_to_be32(VMDK4_MAGIC); memset(&header, 0, sizeof(header)); - header.version = zeroed_grain ? 2 : 1; + if (compress) { + header.version = 3; + } else if (zeroed_grain) { + header.version = 2; + } else { + header.version = 1; + } header.flags = VMDK4_FLAG_RGD | VMDK4_FLAG_NL_DETECT | (compress ? VMDK4_FLAG_COMPRESS | VMDK4_FLAG_MARKER : 0) | (zeroed_grain ? VMDK4_FLAG_ZERO_GRAIN : 0); @@ -1688,18 +1728,18 @@ static int vmdk_create_extent(const char *filename, int64_t filesize, header.check_bytes[3] = 0xa; /* write all the data */ - ret = bdrv_pwrite(bs, 0, &magic, sizeof(magic)); + ret = blk_pwrite(blk, 0, &magic, sizeof(magic)); if (ret < 0) { error_setg(errp, QERR_IO_ERROR); goto exit; } - ret = bdrv_pwrite(bs, sizeof(magic), &header, sizeof(header)); + ret = blk_pwrite(blk, sizeof(magic), &header, sizeof(header)); if (ret < 0) { error_setg(errp, QERR_IO_ERROR); goto exit; } - ret = bdrv_truncate(bs, le64_to_cpu(header.grain_offset) << 9); + ret = blk_truncate(blk, le64_to_cpu(header.grain_offset) << 9); if (ret < 0) { error_setg_errno(errp, -ret, "Could not truncate file"); goto exit; @@ -1712,8 +1752,8 @@ static int vmdk_create_extent(const char *filename, int64_t filesize, i < gt_count; i++, tmp += gt_size) { gd_buf[i] = cpu_to_le32(tmp); } - ret = bdrv_pwrite(bs, le64_to_cpu(header.rgd_offset) * BDRV_SECTOR_SIZE, - gd_buf, gd_buf_size); + ret = blk_pwrite(blk, le64_to_cpu(header.rgd_offset) * BDRV_SECTOR_SIZE, + gd_buf, gd_buf_size); if (ret < 0) { error_setg(errp, QERR_IO_ERROR); goto exit; @@ -1724,8 +1764,8 @@ static int vmdk_create_extent(const char *filename, int64_t filesize, i < gt_count; i++, tmp += gt_size) { gd_buf[i] = cpu_to_le32(tmp); } - ret = bdrv_pwrite(bs, le64_to_cpu(header.gd_offset) * BDRV_SECTOR_SIZE, - gd_buf, gd_buf_size); + ret = blk_pwrite(blk, le64_to_cpu(header.gd_offset) * BDRV_SECTOR_SIZE, + gd_buf, gd_buf_size); if (ret < 0) { error_setg(errp, QERR_IO_ERROR); goto exit; @@ -1733,8 +1773,8 @@ static int vmdk_create_extent(const char *filename, int64_t filesize, ret = 0; exit: - if (bs) { - bdrv_unref(bs); + if (blk) { + blk_unref(blk); } g_free(gd_buf); return ret; @@ -1783,7 +1823,7 @@ static int filename_decompose(const char *filename, char *path, char *prefix, static int vmdk_create(const char *filename, QemuOpts *opts, Error **errp) { int idx = 0; - BlockDriverState *new_bs = NULL; + BlockBackend *new_blk = NULL; Error *local_err = NULL; char *desc = NULL; int64_t total_size = 0, filesize; @@ -1894,7 +1934,7 @@ static int vmdk_create(const char *filename, QemuOpts *opts, Error **errp) goto exit; } if (backing_file) { - BlockDriverState *bs = NULL; + BlockBackend *blk; char *full_backing = g_new0(char, PATH_MAX); bdrv_get_full_backing_filename_from_filename(filename, backing_file, full_backing, PATH_MAX, @@ -1905,19 +1945,21 @@ static int vmdk_create(const char *filename, QemuOpts *opts, Error **errp) ret = -ENOENT; goto exit; } - ret = bdrv_open(&bs, full_backing, NULL, NULL, BDRV_O_NO_BACKING, NULL, - errp); + + blk = blk_new_open(full_backing, NULL, NULL, + BDRV_O_NO_BACKING, errp); g_free(full_backing); - if (ret != 0) { + if (blk == NULL) { + ret = -EIO; goto exit; } - if (strcmp(bs->drv->format_name, "vmdk")) { - bdrv_unref(bs); + if (strcmp(blk_bs(blk)->drv->format_name, "vmdk")) { + blk_unref(blk); ret = -EINVAL; goto exit; } - parent_cid = vmdk_read_cid(bs, 0); - bdrv_unref(bs); + parent_cid = vmdk_read_cid(blk_bs(blk), 0); + blk_unref(blk); snprintf(parent_desc_line, BUF_SIZE, "parentFileNameHint=\"%s\"", backing_file); } @@ -1975,14 +2017,18 @@ static int vmdk_create(const char *filename, QemuOpts *opts, Error **errp) goto exit; } } - assert(new_bs == NULL); - ret = bdrv_open(&new_bs, filename, NULL, NULL, - BDRV_O_RDWR | BDRV_O_PROTOCOL, NULL, &local_err); - if (ret < 0) { + + new_blk = blk_new_open(filename, NULL, NULL, + BDRV_O_RDWR | BDRV_O_PROTOCOL, &local_err); + if (new_blk == NULL) { error_propagate(errp, local_err); + ret = -EIO; goto exit; } - ret = bdrv_pwrite(new_bs, desc_offset, desc, desc_len); + + blk_set_allow_write_beyond_eof(new_blk, true); + + ret = blk_pwrite(new_blk, desc_offset, desc, desc_len); if (ret < 0) { error_setg_errno(errp, -ret, "Could not write description"); goto exit; @@ -1990,14 +2036,14 @@ static int vmdk_create(const char *filename, QemuOpts *opts, Error **errp) /* bdrv_pwrite write padding zeros to align to sector, we don't need that * for description file */ if (desc_offset == 0) { - ret = bdrv_truncate(new_bs, desc_len); + ret = blk_truncate(new_blk, desc_len); if (ret < 0) { error_setg_errno(errp, -ret, "Could not truncate file"); } } exit: - if (new_bs) { - bdrv_unref(new_bs); + if (new_blk) { + blk_unref(new_blk); } g_free(adapter_type); g_free(backing_file); @@ -2032,7 +2078,7 @@ static coroutine_fn int vmdk_co_flush(BlockDriverState *bs) int ret = 0; for (i = 0; i < s->num_extents; i++) { - err = bdrv_co_flush(s->extents[i].file); + err = bdrv_co_flush(s->extents[i].file->bs); if (err < 0) { ret = err; } @@ -2047,7 +2093,7 @@ static int64_t vmdk_get_allocated_file_size(BlockDriverState *bs) int64_t r; BDRVVmdkState *s = bs->opaque; - ret = bdrv_get_allocated_file_size(bs->file); + ret = bdrv_get_allocated_file_size(bs->file->bs); if (ret < 0) { return ret; } @@ -2055,7 +2101,7 @@ static int64_t vmdk_get_allocated_file_size(BlockDriverState *bs) if (s->extents[i].file == bs->file) { continue; } - r = bdrv_get_allocated_file_size(s->extents[i].file); + r = bdrv_get_allocated_file_size(s->extents[i].file->bs); if (r < 0) { return r; } @@ -2073,7 +2119,7 @@ static int vmdk_has_zero_init(BlockDriverState *bs) * return 0. */ for (i = 0; i < s->num_extents; i++) { if (s->extents[i].flat) { - if (!bdrv_has_zero_init(s->extents[i].file)) { + if (!bdrv_has_zero_init(s->extents[i].file->bs)) { return 0; } } @@ -2086,7 +2132,7 @@ static ImageInfo *vmdk_get_extent_info(VmdkExtent *extent) ImageInfo *info = g_new0(ImageInfo, 1); *info = (ImageInfo){ - .filename = g_strdup(extent->file->filename), + .filename = g_strdup(extent->file->bs->filename), .format = g_strdup(extent->type), .virtual_size = extent->sectors * BDRV_SECTOR_SIZE, .compressed = extent->compressed, @@ -2132,7 +2178,9 @@ static int vmdk_check(BlockDriverState *bs, BdrvCheckResult *result, PRId64 "\n", sector_num); break; } - if (ret == VMDK_OK && cluster_offset >= bdrv_getlength(extent->file)) { + if (ret == VMDK_OK && + cluster_offset >= bdrv_getlength(extent->file->bs)) + { fprintf(stderr, "ERROR: cluster offset for sector %" PRId64 " points after EOF\n", sector_num); @@ -2153,19 +2201,19 @@ static ImageInfoSpecific *vmdk_get_specific_info(BlockDriverState *bs) ImageInfoList **next; *spec_info = (ImageInfoSpecific){ - .kind = IMAGE_INFO_SPECIFIC_KIND_VMDK, - { - .vmdk = g_new0(ImageInfoSpecificVmdk, 1), + .type = IMAGE_INFO_SPECIFIC_KIND_VMDK, + .u = { + .vmdk.data = g_new0(ImageInfoSpecificVmdk, 1), }, }; - *spec_info->vmdk = (ImageInfoSpecificVmdk) { + *spec_info->u.vmdk.data = (ImageInfoSpecificVmdk) { .create_type = g_strdup(s->create_type), .cid = s->cid, .parent_cid = s->parent_cid, }; - next = &spec_info->vmdk->extents; + next = &spec_info->u.vmdk.data->extents; for (i = 0; i < s->num_extents; i++) { *next = g_new0(ImageInfoList, 1); (*next)->value = vmdk_get_extent_info(&s->extents[i]); @@ -2208,7 +2256,7 @@ static void vmdk_detach_aio_context(BlockDriverState *bs) int i; for (i = 0; i < s->num_extents; i++) { - bdrv_detach_aio_context(s->extents[i].file); + bdrv_detach_aio_context(s->extents[i].file->bs); } } @@ -2219,7 +2267,7 @@ static void vmdk_attach_aio_context(BlockDriverState *bs, int i; for (i = 0; i < s->num_extents; i++) { - bdrv_attach_aio_context(s->extents[i].file, new_context); + bdrv_attach_aio_context(s->extents[i].file->bs, new_context); } } |