diff options
Diffstat (limited to 'qemu/block/qcow2-snapshot.c')
| -rw-r--r-- | qemu/block/qcow2-snapshot.c | 54 |
1 files changed, 29 insertions, 25 deletions
diff --git a/qemu/block/qcow2-snapshot.c b/qemu/block/qcow2-snapshot.c index b6f58c13e..5f4a17e47 100644 --- a/qemu/block/qcow2-snapshot.c +++ b/qemu/block/qcow2-snapshot.c @@ -22,14 +22,16 @@ * THE SOFTWARE. */ -#include "qemu-common.h" +#include "qemu/osdep.h" +#include "qapi/error.h" #include "block/block_int.h" #include "block/qcow2.h" #include "qemu/error-report.h" +#include "qemu/cutils.h" void qcow2_free_snapshots(BlockDriverState *bs) { - BDRVQcowState *s = bs->opaque; + BDRVQcow2State *s = bs->opaque; int i; for(i = 0; i < s->nb_snapshots; i++) { @@ -43,7 +45,7 @@ void qcow2_free_snapshots(BlockDriverState *bs) int qcow2_read_snapshots(BlockDriverState *bs) { - BDRVQcowState *s = bs->opaque; + BDRVQcow2State *s = bs->opaque; QCowSnapshotHeader h; QCowSnapshotExtraData extra; QCowSnapshot *sn; @@ -64,7 +66,7 @@ int qcow2_read_snapshots(BlockDriverState *bs) for(i = 0; i < s->nb_snapshots; i++) { /* Read statically sized part of the snapshot header */ offset = align_offset(offset, 8); - ret = bdrv_pread(bs->file, offset, &h, sizeof(h)); + ret = bdrv_pread(bs->file->bs, offset, &h, sizeof(h)); if (ret < 0) { goto fail; } @@ -83,7 +85,7 @@ int qcow2_read_snapshots(BlockDriverState *bs) name_size = be16_to_cpu(h.name_size); /* Read extra data */ - ret = bdrv_pread(bs->file, offset, &extra, + ret = bdrv_pread(bs->file->bs, offset, &extra, MIN(sizeof(extra), extra_data_size)); if (ret < 0) { goto fail; @@ -102,7 +104,7 @@ int qcow2_read_snapshots(BlockDriverState *bs) /* Read snapshot ID */ sn->id_str = g_malloc(id_str_size + 1); - ret = bdrv_pread(bs->file, offset, sn->id_str, id_str_size); + ret = bdrv_pread(bs->file->bs, offset, sn->id_str, id_str_size); if (ret < 0) { goto fail; } @@ -111,7 +113,7 @@ int qcow2_read_snapshots(BlockDriverState *bs) /* Read snapshot name */ sn->name = g_malloc(name_size + 1); - ret = bdrv_pread(bs->file, offset, sn->name, name_size); + ret = bdrv_pread(bs->file->bs, offset, sn->name, name_size); if (ret < 0) { goto fail; } @@ -136,7 +138,7 @@ fail: /* add at the end of the file a new list of snapshots */ static int qcow2_write_snapshots(BlockDriverState *bs) { - BDRVQcowState *s = bs->opaque; + BDRVQcow2State *s = bs->opaque; QCowSnapshot *sn; QCowSnapshotHeader h; QCowSnapshotExtraData extra; @@ -214,25 +216,25 @@ static int qcow2_write_snapshots(BlockDriverState *bs) h.name_size = cpu_to_be16(name_size); offset = align_offset(offset, 8); - ret = bdrv_pwrite(bs->file, offset, &h, sizeof(h)); + ret = bdrv_pwrite(bs->file->bs, offset, &h, sizeof(h)); if (ret < 0) { goto fail; } offset += sizeof(h); - ret = bdrv_pwrite(bs->file, offset, &extra, sizeof(extra)); + ret = bdrv_pwrite(bs->file->bs, offset, &extra, sizeof(extra)); if (ret < 0) { goto fail; } offset += sizeof(extra); - ret = bdrv_pwrite(bs->file, offset, sn->id_str, id_str_size); + ret = bdrv_pwrite(bs->file->bs, offset, sn->id_str, id_str_size); if (ret < 0) { goto fail; } offset += id_str_size; - ret = bdrv_pwrite(bs->file, offset, sn->name, name_size); + ret = bdrv_pwrite(bs->file->bs, offset, sn->name, name_size); if (ret < 0) { goto fail; } @@ -254,7 +256,7 @@ static int qcow2_write_snapshots(BlockDriverState *bs) header_data.nb_snapshots = cpu_to_be32(s->nb_snapshots); header_data.snapshots_offset = cpu_to_be64(snapshots_offset); - ret = bdrv_pwrite_sync(bs->file, offsetof(QCowHeader, nb_snapshots), + ret = bdrv_pwrite_sync(bs->file->bs, offsetof(QCowHeader, nb_snapshots), &header_data, sizeof(header_data)); if (ret < 0) { goto fail; @@ -278,7 +280,7 @@ fail: static void find_new_snapshot_id(BlockDriverState *bs, char *id_str, int id_str_size) { - BDRVQcowState *s = bs->opaque; + BDRVQcow2State *s = bs->opaque; QCowSnapshot *sn; int i; unsigned long id, id_max = 0; @@ -296,7 +298,7 @@ static int find_snapshot_by_id_and_name(BlockDriverState *bs, const char *id, const char *name) { - BDRVQcowState *s = bs->opaque; + BDRVQcow2State *s = bs->opaque; int i; if (id && name) { @@ -338,7 +340,7 @@ static int find_snapshot_by_id_or_name(BlockDriverState *bs, /* if no id is provided, a new one is constructed */ int qcow2_snapshot_create(BlockDriverState *bs, QEMUSnapshotInfo *sn_info) { - BDRVQcowState *s = bs->opaque; + BDRVQcow2State *s = bs->opaque; QCowSnapshot *new_snapshot_list = NULL; QCowSnapshot *old_snapshot_list = NULL; QCowSnapshot sn1, *sn = &sn1; @@ -396,7 +398,7 @@ int qcow2_snapshot_create(BlockDriverState *bs, QEMUSnapshotInfo *sn_info) goto fail; } - ret = bdrv_pwrite(bs->file, sn->l1_table_offset, l1_table, + ret = bdrv_pwrite(bs->file->bs, sn->l1_table_offset, l1_table, s->l1_size * sizeof(uint64_t)); if (ret < 0) { goto fail; @@ -461,7 +463,7 @@ fail: /* copy the snapshot 'snapshot_name' into the current disk image */ int qcow2_snapshot_goto(BlockDriverState *bs, const char *snapshot_id) { - BDRVQcowState *s = bs->opaque; + BDRVQcow2State *s = bs->opaque; QCowSnapshot *sn; int i, snapshot_index; int cur_l1_bytes, sn_l1_bytes; @@ -509,7 +511,8 @@ int qcow2_snapshot_goto(BlockDriverState *bs, const char *snapshot_id) goto fail; } - ret = bdrv_pread(bs->file, sn->l1_table_offset, sn_l1_table, sn_l1_bytes); + ret = bdrv_pread(bs->file->bs, sn->l1_table_offset, + sn_l1_table, sn_l1_bytes); if (ret < 0) { goto fail; } @@ -526,7 +529,7 @@ int qcow2_snapshot_goto(BlockDriverState *bs, const char *snapshot_id) goto fail; } - ret = bdrv_pwrite_sync(bs->file, s->l1_table_offset, sn_l1_table, + ret = bdrv_pwrite_sync(bs->file->bs, s->l1_table_offset, sn_l1_table, cur_l1_bytes); if (ret < 0) { goto fail; @@ -587,7 +590,7 @@ int qcow2_snapshot_delete(BlockDriverState *bs, const char *name, Error **errp) { - BDRVQcowState *s = bs->opaque; + BDRVQcow2State *s = bs->opaque; QCowSnapshot sn; int snapshot_index, ret; @@ -650,7 +653,7 @@ int qcow2_snapshot_delete(BlockDriverState *bs, int qcow2_snapshot_list(BlockDriverState *bs, QEMUSnapshotInfo **psn_tab) { - BDRVQcowState *s = bs->opaque; + BDRVQcow2State *s = bs->opaque; QEMUSnapshotInfo *sn_tab, *sn_info; QCowSnapshot *sn; int i; @@ -683,7 +686,7 @@ int qcow2_snapshot_load_tmp(BlockDriverState *bs, Error **errp) { int i, snapshot_index; - BDRVQcowState *s = bs->opaque; + BDRVQcow2State *s = bs->opaque; QCowSnapshot *sn; uint64_t *new_l1_table; int new_l1_bytes; @@ -706,13 +709,14 @@ int qcow2_snapshot_load_tmp(BlockDriverState *bs, return -EFBIG; } new_l1_bytes = sn->l1_size * sizeof(uint64_t); - new_l1_table = qemu_try_blockalign(bs->file, + new_l1_table = qemu_try_blockalign(bs->file->bs, align_offset(new_l1_bytes, 512)); if (new_l1_table == NULL) { return -ENOMEM; } - ret = bdrv_pread(bs->file, sn->l1_table_offset, new_l1_table, new_l1_bytes); + ret = bdrv_pread(bs->file->bs, sn->l1_table_offset, + new_l1_table, new_l1_bytes); if (ret < 0) { error_setg(errp, "Failed to read l1 table for snapshot"); qemu_vfree(new_l1_table); |