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path: root/block/qcow2-cluster.c
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Diffstat (limited to 'block/qcow2-cluster.c')
-rw-r--r--block/qcow2-cluster.c64
1 files changed, 33 insertions, 31 deletions
diff --git a/block/qcow2-cluster.c b/block/qcow2-cluster.c
index 639e05e989..c11680d12a 100644
--- a/block/qcow2-cluster.c
+++ b/block/qcow2-cluster.c
@@ -54,27 +54,27 @@ int qcow2_grow_l1_table(BlockDriverState *bs, int min_size)
memcpy(new_l1_table, s->l1_table, s->l1_size * sizeof(uint64_t));
/* write new table (align to cluster) */
- BLKDBG_EVENT(s->hd, BLKDBG_L1_GROW_ALLOC_TABLE);
+ BLKDBG_EVENT(bs->file, BLKDBG_L1_GROW_ALLOC_TABLE);
new_l1_table_offset = qcow2_alloc_clusters(bs, new_l1_size2);
if (new_l1_table_offset < 0) {
qemu_free(new_l1_table);
return new_l1_table_offset;
}
- BLKDBG_EVENT(s->hd, BLKDBG_L1_GROW_WRITE_TABLE);
+ BLKDBG_EVENT(bs->file, BLKDBG_L1_GROW_WRITE_TABLE);
for(i = 0; i < s->l1_size; i++)
new_l1_table[i] = cpu_to_be64(new_l1_table[i]);
- ret = bdrv_pwrite(s->hd, new_l1_table_offset, new_l1_table, new_l1_size2);
+ ret = bdrv_pwrite(bs->file, new_l1_table_offset, new_l1_table, new_l1_size2);
if (ret != new_l1_size2)
goto fail;
for(i = 0; i < s->l1_size; i++)
new_l1_table[i] = be64_to_cpu(new_l1_table[i]);
/* set new table */
- BLKDBG_EVENT(s->hd, BLKDBG_L1_GROW_ACTIVATE_TABLE);
+ BLKDBG_EVENT(bs->file, BLKDBG_L1_GROW_ACTIVATE_TABLE);
cpu_to_be32w((uint32_t*)data, new_l1_size);
cpu_to_be64w((uint64_t*)(data + 4), new_l1_table_offset);
- ret = bdrv_pwrite(s->hd, offsetof(QCowHeader, l1_size), data,sizeof(data));
+ ret = bdrv_pwrite(bs->file, offsetof(QCowHeader, l1_size), data,sizeof(data));
if (ret != sizeof(data)) {
goto fail;
}
@@ -174,8 +174,8 @@ static uint64_t *l2_load(BlockDriverState *bs, uint64_t l2_offset)
min_index = l2_cache_new_entry(bs);
l2_table = s->l2_cache + (min_index << s->l2_bits);
- BLKDBG_EVENT(s->hd, BLKDBG_L2_LOAD);
- if (bdrv_pread(s->hd, l2_offset, l2_table, s->l2_size * sizeof(uint64_t)) !=
+ BLKDBG_EVENT(bs->file, BLKDBG_L2_LOAD);
+ if (bdrv_pread(bs->file, l2_offset, l2_table, s->l2_size * sizeof(uint64_t)) !=
s->l2_size * sizeof(uint64_t))
return NULL;
s->l2_cache_offsets[min_index] = l2_offset;
@@ -189,8 +189,9 @@ static uint64_t *l2_load(BlockDriverState *bs, uint64_t l2_offset)
* and we really don't want bdrv_pread to perform a read-modify-write)
*/
#define L1_ENTRIES_PER_SECTOR (512 / 8)
-static int write_l1_entry(BDRVQcowState *s, int l1_index)
+static int write_l1_entry(BlockDriverState *bs, int l1_index)
{
+ BDRVQcowState *s = bs->opaque;
uint64_t buf[L1_ENTRIES_PER_SECTOR];
int l1_start_index;
int i, ret;
@@ -200,8 +201,8 @@ static int write_l1_entry(BDRVQcowState *s, int l1_index)
buf[i] = cpu_to_be64(s->l1_table[l1_start_index + i]);
}
- BLKDBG_EVENT(s->hd, BLKDBG_L1_UPDATE);
- ret = bdrv_pwrite(s->hd, s->l1_table_offset + 8 * l1_start_index,
+ BLKDBG_EVENT(bs->file, BLKDBG_L1_UPDATE);
+ ret = bdrv_pwrite(bs->file, s->l1_table_offset + 8 * l1_start_index,
buf, sizeof(buf));
if (ret < 0) {
return ret;
@@ -241,7 +242,7 @@ static int l2_allocate(BlockDriverState *bs, int l1_index, uint64_t **table)
/* update the L1 entry */
s->l1_table[l1_index] = l2_offset | QCOW_OFLAG_COPIED;
- ret = write_l1_entry(s, l1_index);
+ ret = write_l1_entry(bs, l1_index);
if (ret < 0) {
return ret;
}
@@ -256,16 +257,16 @@ static int l2_allocate(BlockDriverState *bs, int l1_index, uint64_t **table)
memset(l2_table, 0, s->l2_size * sizeof(uint64_t));
} else {
/* if there was an old l2 table, read it from the disk */
- BLKDBG_EVENT(s->hd, BLKDBG_L2_ALLOC_COW_READ);
- ret = bdrv_pread(s->hd, old_l2_offset, l2_table,
+ BLKDBG_EVENT(bs->file, BLKDBG_L2_ALLOC_COW_READ);
+ ret = bdrv_pread(bs->file, old_l2_offset, l2_table,
s->l2_size * sizeof(uint64_t));
if (ret < 0) {
return ret;
}
}
/* write the l2 table to the file */
- BLKDBG_EVENT(s->hd, BLKDBG_L2_ALLOC_WRITE);
- ret = bdrv_pwrite(s->hd, l2_offset, l2_table,
+ BLKDBG_EVENT(bs->file, BLKDBG_L2_ALLOC_WRITE);
+ ret = bdrv_pwrite(bs->file, l2_offset, l2_table,
s->l2_size * sizeof(uint64_t));
if (ret < 0) {
return ret;
@@ -348,7 +349,7 @@ static int qcow_read(BlockDriverState *bs, int64_t sector_num,
/* read from the base image */
n1 = qcow2_backing_read1(bs->backing_hd, sector_num, buf, n);
if (n1 > 0) {
- BLKDBG_EVENT(s->hd, BLKDBG_READ_BACKING);
+ BLKDBG_EVENT(bs->file, BLKDBG_READ_BACKING);
ret = bdrv_read(bs->backing_hd, sector_num, buf, n1);
if (ret < 0)
return -1;
@@ -357,12 +358,12 @@ static int qcow_read(BlockDriverState *bs, int64_t sector_num,
memset(buf, 0, 512 * n);
}
} else if (cluster_offset & QCOW_OFLAG_COMPRESSED) {
- if (qcow2_decompress_cluster(s, cluster_offset) < 0)
+ if (qcow2_decompress_cluster(bs, cluster_offset) < 0)
return -1;
memcpy(buf, s->cluster_cache + index_in_cluster * 512, 512 * n);
} else {
- BLKDBG_EVENT(s->hd, BLKDBG_READ);
- ret = bdrv_pread(s->hd, cluster_offset + index_in_cluster * 512, buf, n * 512);
+ BLKDBG_EVENT(bs->file, BLKDBG_READ);
+ ret = bdrv_pread(bs->file, cluster_offset + index_in_cluster * 512, buf, n * 512);
if (ret != n * 512)
return -1;
if (s->crypt_method) {
@@ -386,7 +387,7 @@ static int copy_sectors(BlockDriverState *bs, uint64_t start_sect,
n = n_end - n_start;
if (n <= 0)
return 0;
- BLKDBG_EVENT(s->hd, BLKDBG_COW_READ);
+ BLKDBG_EVENT(bs->file, BLKDBG_COW_READ);
ret = qcow_read(bs, start_sect + n_start, s->cluster_data, n);
if (ret < 0)
return ret;
@@ -396,8 +397,8 @@ static int copy_sectors(BlockDriverState *bs, uint64_t start_sect,
s->cluster_data, n, 1,
&s->aes_encrypt_key);
}
- BLKDBG_EVENT(s->hd, BLKDBG_COW_WRITE);
- ret = bdrv_write(s->hd, (cluster_offset >> 9) + n_start,
+ BLKDBG_EVENT(bs->file, BLKDBG_COW_WRITE);
+ ret = bdrv_write(bs->file, (cluster_offset >> 9) + n_start,
s->cluster_data, n);
if (ret < 0)
return ret;
@@ -610,9 +611,9 @@ uint64_t qcow2_alloc_compressed_cluster_offset(BlockDriverState *bs,
/* compressed clusters never have the copied flag */
- BLKDBG_EVENT(s->hd, BLKDBG_L2_UPDATE_COMPRESSED);
+ BLKDBG_EVENT(bs->file, BLKDBG_L2_UPDATE_COMPRESSED);
l2_table[l2_index] = cpu_to_be64(cluster_offset);
- if (bdrv_pwrite(s->hd,
+ if (bdrv_pwrite(bs->file,
l2_offset + l2_index * sizeof(uint64_t),
l2_table + l2_index,
sizeof(uint64_t)) != sizeof(uint64_t))
@@ -626,7 +627,7 @@ uint64_t qcow2_alloc_compressed_cluster_offset(BlockDriverState *bs,
* read-modify-write in bdrv_pwrite
*/
#define L2_ENTRIES_PER_SECTOR (512 / 8)
-static int write_l2_entries(BDRVQcowState *s, uint64_t *l2_table,
+static int write_l2_entries(BlockDriverState *bs, uint64_t *l2_table,
uint64_t l2_offset, int l2_index, int num)
{
int l2_start_index = l2_index & ~(L1_ENTRIES_PER_SECTOR - 1);
@@ -635,8 +636,8 @@ static int write_l2_entries(BDRVQcowState *s, uint64_t *l2_table,
size_t len = end_offset - start_offset;
int ret;
- BLKDBG_EVENT(s->hd, BLKDBG_L2_UPDATE);
- ret = bdrv_pwrite(s->hd, l2_offset + start_offset,
+ BLKDBG_EVENT(bs->file, BLKDBG_L2_UPDATE);
+ ret = bdrv_pwrite(bs->file, l2_offset + start_offset,
&l2_table[l2_start_index], len);
if (ret < 0) {
return ret;
@@ -693,7 +694,7 @@ int qcow2_alloc_cluster_link_l2(BlockDriverState *bs, QCowL2Meta *m)
(i << s->cluster_bits)) | QCOW_OFLAG_COPIED);
}
- ret = write_l2_entries(s, l2_table, l2_offset, l2_index, m->nb_clusters);
+ ret = write_l2_entries(bs, l2_table, l2_offset, l2_index, m->nb_clusters);
if (ret < 0) {
goto err;
}
@@ -877,8 +878,9 @@ static int decompress_buffer(uint8_t *out_buf, int out_buf_size,
return 0;
}
-int qcow2_decompress_cluster(BDRVQcowState *s, uint64_t cluster_offset)
+int qcow2_decompress_cluster(BlockDriverState *bs, uint64_t cluster_offset)
{
+ BDRVQcowState *s = bs->opaque;
int ret, csize, nb_csectors, sector_offset;
uint64_t coffset;
@@ -887,8 +889,8 @@ int qcow2_decompress_cluster(BDRVQcowState *s, uint64_t cluster_offset)
nb_csectors = ((cluster_offset >> s->csize_shift) & s->csize_mask) + 1;
sector_offset = coffset & 511;
csize = nb_csectors * 512 - sector_offset;
- BLKDBG_EVENT(s->hd, BLKDBG_READ_COMPRESSED);
- ret = bdrv_read(s->hd, coffset >> 9, s->cluster_data, nb_csectors);
+ BLKDBG_EVENT(bs->file, BLKDBG_READ_COMPRESSED);
+ ret = bdrv_read(bs->file, coffset >> 9, s->cluster_data, nb_csectors);
if (ret < 0) {
return -1;
}
generated by cgit v1.2.3 (git 2.26.2) at 2024-12-04 17:14:56 +0000