* [PATCH v2 00/10] Implement bdrv_{pread, pwrite, pwrite_sync, pwrite_zeroes}() using generated_co_wrapper
@ 2022-05-13 15:54 Alberto Faria
2022-05-13 15:54 ` [PATCH v2 01/10] block: Add a 'flags' param to bdrv_{pread, pwrite, pwrite_sync}() Alberto Faria
` (9 more replies)
0 siblings, 10 replies; 18+ messages in thread
From: Alberto Faria @ 2022-05-13 15:54 UTC (permalink / raw)
To: qemu-devel
Cc: qemu-block, Alberto Faria, Ari Sundholm, Kevin Wolf, Hanna Reitz,
Stefan Hajnoczi, Fam Zheng, Denis V. Lunev,
Vladimir Sementsov-Ogievskiy, Eric Blake, John Snow, Stefan Weil,
Jeff Cody, Daniel P. Berrangé
Start by making the interfaces of analogous non-coroutine and coroutine
functions consistent with each other, then implement the non-coroutine
ones using generated_co_wrapper.
For the bdrv_pwrite_sync() case, also add the missing
bdrv_co_pwrite_sync() function.
Changes v1 --> v2:
- Drop unnecessary assignments to ret in vhdx_log_peek_hdr(),
vhdx_log_read_sectors(), and vhdx_log_write_sectors().
- Simplify vdi_co_pwritev() return expression.
- Add patch making crypto block callbacks return 0 on success.
- Clarify in commit message that bdrv_pwrite_zeroes() now calls
trace_bdrv_co_pwrite_zeroes() and clears the BDRV_REQ_MAY_UNMAP flag
when appropriate, which it didn't previously.
- Use _co_ functions in the implementation of bdrv_co_pwrite_sync().
- Add patch converting uses of bdrv_pwrite_sync() into
bdrv_co_pwrite_sync() when the callers are already coroutine_fn.
- Add patch making qcow2_mark_dirty() use bdrv_pwrite_sync() instead of
calling bdrv_pwrite() and bdrv_flush() separately.
Alberto Faria (10):
block: Add a 'flags' param to bdrv_{pread,pwrite,pwrite_sync}()
block: Change bdrv_{pread,pwrite,pwrite_sync}() param order
block: Make bdrv_{pread,pwrite}() return 0 on success
crypto: Make block callbacks return 0 on success
block: Make bdrv_co_pwrite() take a const buffer
block: Make 'bytes' param of bdrv_co_{pread,pwrite,preadv,pwritev}()
an int64_t
block: Implement bdrv_{pread,pwrite,pwrite_zeroes}() using
generated_co_wrapper
block: Add bdrv_co_pwrite_sync()
block: Use bdrv_co_pwrite_sync() when caller is coroutine_fn
block/qcow2: Use bdrv_pwrite_sync() in qcow2_mark_dirty()
block/blklogwrites.c | 6 +--
block/bochs.c | 10 ++--
block/cloop.c | 12 ++---
block/coroutines.h | 4 +-
block/crypto.c | 56 +++++++++++-----------
block/dmg.c | 36 +++++++-------
block/io.c | 55 ++--------------------
block/parallels-ext.c | 6 +--
block/parallels.c | 12 ++---
block/qcow.c | 41 ++++++++--------
block/qcow2-bitmap.c | 14 +++---
block/qcow2-cache.c | 9 ++--
block/qcow2-cluster.c | 19 ++++----
block/qcow2-refcount.c | 58 ++++++++++++-----------
block/qcow2-snapshot.c | 53 ++++++++++-----------
block/qcow2.c | 80 ++++++++++++++++----------------
block/qed.c | 13 ++----
block/vdi.c | 16 +++----
block/vhdx-log.c | 23 +++++----
block/vhdx.c | 36 +++++++-------
block/vmdk.c | 70 +++++++++++++---------------
block/vpc.c | 23 ++++-----
block/vvfat.c | 11 +++--
crypto/block-luks.c | 8 ++--
crypto/block.c | 6 +--
include/block/block-io.h | 22 ++++++---
include/block/block_int-io.h | 4 +-
include/crypto/block.h | 32 ++++++-------
tests/unit/test-block-iothread.c | 12 ++---
tests/unit/test-crypto-block.c | 38 +++++++--------
30 files changed, 370 insertions(+), 415 deletions(-)
--
2.35.3
^ permalink raw reply [flat|nested] 18+ messages in thread
* [PATCH v2 01/10] block: Add a 'flags' param to bdrv_{pread, pwrite, pwrite_sync}()
2022-05-13 15:54 [PATCH v2 00/10] Implement bdrv_{pread, pwrite, pwrite_sync, pwrite_zeroes}() using generated_co_wrapper Alberto Faria
@ 2022-05-13 15:54 ` Alberto Faria
2022-05-13 15:54 ` [PATCH v2 02/10] block: Change bdrv_{pread, pwrite, pwrite_sync}() param order Alberto Faria
` (8 subsequent siblings)
9 siblings, 0 replies; 18+ messages in thread
From: Alberto Faria @ 2022-05-13 15:54 UTC (permalink / raw)
To: qemu-devel
Cc: qemu-block, Alberto Faria, Paolo Bonzini, Ari Sundholm,
Kevin Wolf, Hanna Reitz, Stefan Hajnoczi, Fam Zheng,
Denis V. Lunev, Vladimir Sementsov-Ogievskiy, Eric Blake,
John Snow, Stefan Weil, Jeff Cody
For consistency with other I/O functions, and in preparation to
implement them using generated_co_wrapper.
Callers were updated using this Coccinelle script:
@@ expression child, offset, buf, bytes; @@
- bdrv_pread(child, offset, buf, bytes)
+ bdrv_pread(child, offset, buf, bytes, 0)
@@ expression child, offset, buf, bytes; @@
- bdrv_pwrite(child, offset, buf, bytes)
+ bdrv_pwrite(child, offset, buf, bytes, 0)
@@ expression child, offset, buf, bytes; @@
- bdrv_pwrite_sync(child, offset, buf, bytes)
+ bdrv_pwrite_sync(child, offset, buf, bytes, 0)
Resulting overly-long lines were then fixed by hand.
Signed-off-by: Alberto Faria <afaria@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
---
block/blklogwrites.c | 4 +--
block/bochs.c | 6 ++--
block/cloop.c | 10 +++---
block/crypto.c | 4 +--
block/dmg.c | 24 +++++++-------
block/io.c | 13 ++++----
block/parallels-ext.c | 4 +--
block/parallels.c | 12 +++----
block/qcow.c | 27 ++++++++-------
block/qcow2-bitmap.c | 14 ++++----
block/qcow2-cache.c | 7 ++--
block/qcow2-cluster.c | 21 ++++++------
block/qcow2-refcount.c | 42 +++++++++++------------
block/qcow2-snapshot.c | 39 +++++++++++-----------
block/qcow2.c | 44 ++++++++++++------------
block/qed.c | 8 ++---
block/vdi.c | 10 +++---
block/vhdx-log.c | 19 +++++------
block/vhdx.c | 32 ++++++++++--------
block/vmdk.c | 57 ++++++++++++++------------------
block/vpc.c | 19 ++++++-----
block/vvfat.c | 7 ++--
include/block/block-io.h | 7 ++--
tests/unit/test-block-iothread.c | 8 ++---
24 files changed, 219 insertions(+), 219 deletions(-)
diff --git a/block/blklogwrites.c b/block/blklogwrites.c
index f7a251e91f..c5c021e6f8 100644
--- a/block/blklogwrites.c
+++ b/block/blklogwrites.c
@@ -108,7 +108,7 @@ static uint64_t blk_log_writes_find_cur_log_sector(BdrvChild *log,
while (cur_idx < nr_entries) {
int read_ret = bdrv_pread(log, cur_sector << sector_bits, &cur_entry,
- sizeof(cur_entry));
+ sizeof(cur_entry), 0);
if (read_ret < 0) {
error_setg_errno(errp, -read_ret,
"Failed to read log entry %"PRIu64, cur_idx);
@@ -190,7 +190,7 @@ static int blk_log_writes_open(BlockDriverState *bs, QDict *options, int flags,
log_sb.nr_entries = cpu_to_le64(0);
log_sb.sectorsize = cpu_to_le32(BDRV_SECTOR_SIZE);
} else {
- ret = bdrv_pread(s->log_file, 0, &log_sb, sizeof(log_sb));
+ ret = bdrv_pread(s->log_file, 0, &log_sb, sizeof(log_sb), 0);
if (ret < 0) {
error_setg_errno(errp, -ret, "Could not read log superblock");
goto fail_log;
diff --git a/block/bochs.c b/block/bochs.c
index 4d68658087..46d0f6a693 100644
--- a/block/bochs.c
+++ b/block/bochs.c
@@ -116,7 +116,7 @@ static int bochs_open(BlockDriverState *bs, QDict *options, int flags,
return -EINVAL;
}
- ret = bdrv_pread(bs->file, 0, &bochs, sizeof(bochs));
+ ret = bdrv_pread(bs->file, 0, &bochs, sizeof(bochs), 0);
if (ret < 0) {
return ret;
}
@@ -151,7 +151,7 @@ static int bochs_open(BlockDriverState *bs, QDict *options, int flags,
}
ret = bdrv_pread(bs->file, le32_to_cpu(bochs.header), s->catalog_bitmap,
- s->catalog_size * 4);
+ s->catalog_size * 4, 0);
if (ret < 0) {
goto fail;
}
@@ -225,7 +225,7 @@ static int64_t seek_to_sector(BlockDriverState *bs, int64_t sector_num)
/* read in bitmap for current extent */
ret = bdrv_pread(bs->file, bitmap_offset + (extent_offset / 8),
- &bitmap_entry, 1);
+ &bitmap_entry, 1, 0);
if (ret < 0) {
return ret;
}
diff --git a/block/cloop.c b/block/cloop.c
index b8c6d0eccd..208a58ebb1 100644
--- a/block/cloop.c
+++ b/block/cloop.c
@@ -78,7 +78,7 @@ static int cloop_open(BlockDriverState *bs, QDict *options, int flags,
}
/* read header */
- ret = bdrv_pread(bs->file, 128, &s->block_size, 4);
+ ret = bdrv_pread(bs->file, 128, &s->block_size, 4, 0);
if (ret < 0) {
return ret;
}
@@ -104,7 +104,7 @@ static int cloop_open(BlockDriverState *bs, QDict *options, int flags,
return -EINVAL;
}
- ret = bdrv_pread(bs->file, 128 + 4, &s->n_blocks, 4);
+ ret = bdrv_pread(bs->file, 128 + 4, &s->n_blocks, 4, 0);
if (ret < 0) {
return ret;
}
@@ -135,7 +135,7 @@ static int cloop_open(BlockDriverState *bs, QDict *options, int flags,
return -ENOMEM;
}
- ret = bdrv_pread(bs->file, 128 + 4 + 4, s->offsets, offsets_size);
+ ret = bdrv_pread(bs->file, 128 + 4 + 4, s->offsets, offsets_size, 0);
if (ret < 0) {
goto fail;
}
@@ -220,8 +220,8 @@ static inline int cloop_read_block(BlockDriverState *bs, int block_num)
int ret;
uint32_t bytes = s->offsets[block_num + 1] - s->offsets[block_num];
- ret = bdrv_pread(bs->file, s->offsets[block_num],
- s->compressed_block, bytes);
+ ret = bdrv_pread(bs->file, s->offsets[block_num], s->compressed_block,
+ bytes, 0);
if (ret != bytes) {
return -1;
}
diff --git a/block/crypto.c b/block/crypto.c
index 1ba82984ef..d0c22e9549 100644
--- a/block/crypto.c
+++ b/block/crypto.c
@@ -65,7 +65,7 @@ static ssize_t block_crypto_read_func(QCryptoBlock *block,
BlockDriverState *bs = opaque;
ssize_t ret;
- ret = bdrv_pread(bs->file, offset, buf, buflen);
+ ret = bdrv_pread(bs->file, offset, buf, buflen, 0);
if (ret < 0) {
error_setg_errno(errp, -ret, "Could not read encryption header");
return ret;
@@ -83,7 +83,7 @@ static ssize_t block_crypto_write_func(QCryptoBlock *block,
BlockDriverState *bs = opaque;
ssize_t ret;
- ret = bdrv_pwrite(bs->file, offset, buf, buflen);
+ ret = bdrv_pwrite(bs->file, offset, buf, buflen, 0);
if (ret < 0) {
error_setg_errno(errp, -ret, "Could not write encryption header");
return ret;
diff --git a/block/dmg.c b/block/dmg.c
index c626587f9c..ddd1d23005 100644
--- a/block/dmg.c
+++ b/block/dmg.c
@@ -77,7 +77,7 @@ static int read_uint64(BlockDriverState *bs, int64_t offset, uint64_t *result)
uint64_t buffer;
int ret;
- ret = bdrv_pread(bs->file, offset, &buffer, 8);
+ ret = bdrv_pread(bs->file, offset, &buffer, 8, 0);
if (ret < 0) {
return ret;
}
@@ -91,7 +91,7 @@ static int read_uint32(BlockDriverState *bs, int64_t offset, uint32_t *result)
uint32_t buffer;
int ret;
- ret = bdrv_pread(bs->file, offset, &buffer, 4);
+ ret = bdrv_pread(bs->file, offset, &buffer, 4, 0);
if (ret < 0) {
return ret;
}
@@ -172,7 +172,7 @@ static int64_t dmg_find_koly_offset(BdrvChild *file, Error **errp)
offset = length - 511 - 512;
}
length = length < 515 ? length : 515;
- ret = bdrv_pread(file, offset, buffer, length);
+ ret = bdrv_pread(file, offset, buffer, length, 0);
if (ret < 0) {
error_setg_errno(errp, -ret, "Failed while reading UDIF trailer");
return ret;
@@ -352,7 +352,7 @@ static int dmg_read_resource_fork(BlockDriverState *bs, DmgHeaderState *ds,
offset += 4;
buffer = g_realloc(buffer, count);
- ret = bdrv_pread(bs->file, offset, buffer, count);
+ ret = bdrv_pread(bs->file, offset, buffer, count, 0);
if (ret < 0) {
goto fail;
}
@@ -389,7 +389,7 @@ static int dmg_read_plist_xml(BlockDriverState *bs, DmgHeaderState *ds,
buffer = g_malloc(info_length + 1);
buffer[info_length] = '\0';
- ret = bdrv_pread(bs->file, info_begin, buffer, info_length);
+ ret = bdrv_pread(bs->file, info_begin, buffer, info_length, 0);
if (ret != info_length) {
ret = -EINVAL;
goto fail;
@@ -609,8 +609,8 @@ static inline int dmg_read_chunk(BlockDriverState *bs, uint64_t sector_num)
case UDZO: { /* zlib compressed */
/* we need to buffer, because only the chunk as whole can be
* inflated. */
- ret = bdrv_pread(bs->file, s->offsets[chunk],
- s->compressed_chunk, s->lengths[chunk]);
+ ret = bdrv_pread(bs->file, s->offsets[chunk], s->compressed_chunk,
+ s->lengths[chunk], 0);
if (ret != s->lengths[chunk]) {
return -1;
}
@@ -635,8 +635,8 @@ static inline int dmg_read_chunk(BlockDriverState *bs, uint64_t sector_num)
}
/* we need to buffer, because only the chunk as whole can be
* inflated. */
- ret = bdrv_pread(bs->file, s->offsets[chunk],
- s->compressed_chunk, s->lengths[chunk]);
+ ret = bdrv_pread(bs->file, s->offsets[chunk], s->compressed_chunk,
+ s->lengths[chunk], 0);
if (ret != s->lengths[chunk]) {
return -1;
}
@@ -656,8 +656,8 @@ static inline int dmg_read_chunk(BlockDriverState *bs, uint64_t sector_num)
}
/* we need to buffer, because only the chunk as whole can be
* inflated. */
- ret = bdrv_pread(bs->file, s->offsets[chunk],
- s->compressed_chunk, s->lengths[chunk]);
+ ret = bdrv_pread(bs->file, s->offsets[chunk], s->compressed_chunk,
+ s->lengths[chunk], 0);
if (ret != s->lengths[chunk]) {
return -1;
}
@@ -673,7 +673,7 @@ static inline int dmg_read_chunk(BlockDriverState *bs, uint64_t sector_num)
break;
case UDRW: /* copy */
ret = bdrv_pread(bs->file, s->offsets[chunk],
- s->uncompressed_chunk, s->lengths[chunk]);
+ s->uncompressed_chunk, s->lengths[chunk], 0);
if (ret != s->lengths[chunk]) {
return -1;
}
diff --git a/block/io.c b/block/io.c
index 789e6373d5..008e5c90bf 100644
--- a/block/io.c
+++ b/block/io.c
@@ -1112,7 +1112,8 @@ int bdrv_make_zero(BdrvChild *child, BdrvRequestFlags flags)
}
/* See bdrv_pwrite() for the return codes */
-int bdrv_pread(BdrvChild *child, int64_t offset, void *buf, int64_t bytes)
+int bdrv_pread(BdrvChild *child, int64_t offset, void *buf, int64_t bytes,
+ BdrvRequestFlags flags)
{
int ret;
QEMUIOVector qiov = QEMU_IOVEC_INIT_BUF(qiov, buf, bytes);
@@ -1122,7 +1123,7 @@ int bdrv_pread(BdrvChild *child, int64_t offset, void *buf, int64_t bytes)
return -EINVAL;
}
- ret = bdrv_preadv(child, offset, bytes, &qiov, 0);
+ ret = bdrv_preadv(child, offset, bytes, &qiov, flags);
return ret < 0 ? ret : bytes;
}
@@ -1134,7 +1135,7 @@ int bdrv_pread(BdrvChild *child, int64_t offset, void *buf, int64_t bytes)
-EACCES Trying to write a read-only device
*/
int bdrv_pwrite(BdrvChild *child, int64_t offset, const void *buf,
- int64_t bytes)
+ int64_t bytes, BdrvRequestFlags flags)
{
int ret;
QEMUIOVector qiov = QEMU_IOVEC_INIT_BUF(qiov, buf, bytes);
@@ -1144,7 +1145,7 @@ int bdrv_pwrite(BdrvChild *child, int64_t offset, const void *buf,
return -EINVAL;
}
- ret = bdrv_pwritev(child, offset, bytes, &qiov, 0);
+ ret = bdrv_pwritev(child, offset, bytes, &qiov, flags);
return ret < 0 ? ret : bytes;
}
@@ -1156,12 +1157,12 @@ int bdrv_pwrite(BdrvChild *child, int64_t offset, const void *buf,
* Returns 0 on success, -errno in error cases.
*/
int bdrv_pwrite_sync(BdrvChild *child, int64_t offset,
- const void *buf, int64_t count)
+ const void *buf, int64_t count, BdrvRequestFlags flags)
{
int ret;
IO_CODE();
- ret = bdrv_pwrite(child, offset, buf, count);
+ ret = bdrv_pwrite(child, offset, buf, count, flags);
if (ret < 0) {
return ret;
}
diff --git a/block/parallels-ext.c b/block/parallels-ext.c
index 5122f67ac2..f737104d12 100644
--- a/block/parallels-ext.c
+++ b/block/parallels-ext.c
@@ -94,7 +94,7 @@ static int parallels_load_bitmap_data(BlockDriverState *bs,
bdrv_dirty_bitmap_deserialize_ones(bitmap, offset, count, false);
} else {
ret = bdrv_pread(bs->file, entry << BDRV_SECTOR_BITS, buf,
- s->cluster_size);
+ s->cluster_size, 0);
if (ret < 0) {
error_setg_errno(errp, -ret,
"Failed to read bitmap data cluster");
@@ -286,7 +286,7 @@ int parallels_read_format_extension(BlockDriverState *bs,
assert(ext_off > 0);
- ret = bdrv_pread(bs->file, ext_off, ext_cluster, s->cluster_size);
+ ret = bdrv_pread(bs->file, ext_off, ext_cluster, s->cluster_size, 0);
if (ret < 0) {
error_setg_errno(errp, -ret, "Failed to read Format Extension cluster");
goto out;
diff --git a/block/parallels.c b/block/parallels.c
index 8879b7027a..6ab82764b2 100644
--- a/block/parallels.c
+++ b/block/parallels.c
@@ -277,8 +277,8 @@ static coroutine_fn int parallels_co_flush_to_os(BlockDriverState *bs)
if (off + to_write > s->header_size) {
to_write = s->header_size - off;
}
- ret = bdrv_pwrite(bs->file, off, (uint8_t *)s->header + off,
- to_write);
+ ret = bdrv_pwrite(bs->file, off, (uint8_t *)s->header + off, to_write,
+ 0);
if (ret < 0) {
qemu_co_mutex_unlock(&s->lock);
return ret;
@@ -481,7 +481,7 @@ static int coroutine_fn parallels_co_check(BlockDriverState *bs,
ret = 0;
if (flush_bat) {
- ret = bdrv_pwrite_sync(bs->file, 0, s->header, s->header_size);
+ ret = bdrv_pwrite_sync(bs->file, 0, s->header, s->header_size, 0);
if (ret < 0) {
res->check_errors++;
goto out;
@@ -723,7 +723,7 @@ static int parallels_update_header(BlockDriverState *bs)
if (size > s->header_size) {
size = s->header_size;
}
- return bdrv_pwrite_sync(bs->file, 0, s->header, size);
+ return bdrv_pwrite_sync(bs->file, 0, s->header, size, 0);
}
static int parallels_open(BlockDriverState *bs, QDict *options, int flags,
@@ -742,7 +742,7 @@ static int parallels_open(BlockDriverState *bs, QDict *options, int flags,
return -EINVAL;
}
- ret = bdrv_pread(bs->file, 0, &ph, sizeof(ph));
+ ret = bdrv_pread(bs->file, 0, &ph, sizeof(ph), 0);
if (ret < 0) {
goto fail;
}
@@ -798,7 +798,7 @@ static int parallels_open(BlockDriverState *bs, QDict *options, int flags,
s->header_size = size;
}
- ret = bdrv_pread(bs->file, 0, s->header, s->header_size);
+ ret = bdrv_pread(bs->file, 0, s->header, s->header_size, 0);
if (ret < 0) {
goto fail;
}
diff --git a/block/qcow.c b/block/qcow.c
index 4fba1b9e36..20fb94c18b 100644
--- a/block/qcow.c
+++ b/block/qcow.c
@@ -128,7 +128,7 @@ static int qcow_open(BlockDriverState *bs, QDict *options, int flags,
goto fail;
}
- ret = bdrv_pread(bs->file, 0, &header, sizeof(header));
+ ret = bdrv_pread(bs->file, 0, &header, sizeof(header), 0);
if (ret < 0) {
goto fail;
}
@@ -261,7 +261,7 @@ static int qcow_open(BlockDriverState *bs, QDict *options, int flags,
}
ret = bdrv_pread(bs->file, s->l1_table_offset, s->l1_table,
- s->l1_size * sizeof(uint64_t));
+ s->l1_size * sizeof(uint64_t), 0);
if (ret < 0) {
goto fail;
}
@@ -292,7 +292,7 @@ static int qcow_open(BlockDriverState *bs, QDict *options, int flags,
goto fail;
}
ret = bdrv_pread(bs->file, header.backing_file_offset,
- bs->auto_backing_file, len);
+ bs->auto_backing_file, len, 0);
if (ret < 0) {
goto fail;
}
@@ -383,7 +383,7 @@ static int get_cluster_offset(BlockDriverState *bs,
BLKDBG_EVENT(bs->file, BLKDBG_L1_UPDATE);
ret = bdrv_pwrite_sync(bs->file,
s->l1_table_offset + l1_index * sizeof(tmp),
- &tmp, sizeof(tmp));
+ &tmp, sizeof(tmp), 0);
if (ret < 0) {
return ret;
}
@@ -415,13 +415,13 @@ static int get_cluster_offset(BlockDriverState *bs,
if (new_l2_table) {
memset(l2_table, 0, s->l2_size * sizeof(uint64_t));
ret = bdrv_pwrite_sync(bs->file, l2_offset, l2_table,
- s->l2_size * sizeof(uint64_t));
+ s->l2_size * sizeof(uint64_t), 0);
if (ret < 0) {
return ret;
}
} else {
ret = bdrv_pread(bs->file, l2_offset, l2_table,
- s->l2_size * sizeof(uint64_t));
+ s->l2_size * sizeof(uint64_t), 0);
if (ret < 0) {
return ret;
}
@@ -454,7 +454,7 @@ static int get_cluster_offset(BlockDriverState *bs,
/* write the cluster content */
BLKDBG_EVENT(bs->file, BLKDBG_WRITE_AIO);
ret = bdrv_pwrite(bs->file, cluster_offset, s->cluster_cache,
- s->cluster_size);
+ s->cluster_size, 0);
if (ret < 0) {
return ret;
}
@@ -492,10 +492,9 @@ static int get_cluster_offset(BlockDriverState *bs,
return -EIO;
}
BLKDBG_EVENT(bs->file, BLKDBG_WRITE_AIO);
- ret = bdrv_pwrite(bs->file,
- cluster_offset + i,
+ ret = bdrv_pwrite(bs->file, cluster_offset + i,
s->cluster_data,
- BDRV_SECTOR_SIZE);
+ BDRV_SECTOR_SIZE, 0);
if (ret < 0) {
return ret;
}
@@ -516,7 +515,7 @@ static int get_cluster_offset(BlockDriverState *bs,
BLKDBG_EVENT(bs->file, BLKDBG_L2_UPDATE);
}
ret = bdrv_pwrite_sync(bs->file, l2_offset + l2_index * sizeof(tmp),
- &tmp, sizeof(tmp));
+ &tmp, sizeof(tmp), 0);
if (ret < 0) {
return ret;
}
@@ -597,7 +596,7 @@ static int decompress_cluster(BlockDriverState *bs, uint64_t cluster_offset)
csize = cluster_offset >> (63 - s->cluster_bits);
csize &= (s->cluster_size - 1);
BLKDBG_EVENT(bs->file, BLKDBG_READ_COMPRESSED);
- ret = bdrv_pread(bs->file, coffset, s->cluster_data, csize);
+ ret = bdrv_pread(bs->file, coffset, s->cluster_data, csize, 0);
if (ret != csize)
return -1;
if (decompress_buffer(s->cluster_cache, s->cluster_size,
@@ -1030,8 +1029,8 @@ static int qcow_make_empty(BlockDriverState *bs)
int ret;
memset(s->l1_table, 0, l1_length);
- if (bdrv_pwrite_sync(bs->file, s->l1_table_offset, s->l1_table,
- l1_length) < 0)
+ if (bdrv_pwrite_sync(bs->file, s->l1_table_offset, s->l1_table, l1_length,
+ 0) < 0)
return -1;
ret = bdrv_truncate(bs->file, s->l1_table_offset + l1_length, false,
PREALLOC_MODE_OFF, 0, NULL);
diff --git a/block/qcow2-bitmap.c b/block/qcow2-bitmap.c
index 8fb4731551..6aa4739820 100644
--- a/block/qcow2-bitmap.c
+++ b/block/qcow2-bitmap.c
@@ -234,8 +234,8 @@ static int bitmap_table_load(BlockDriverState *bs, Qcow2BitmapTable *tb,
}
assert(tb->size <= BME_MAX_TABLE_SIZE);
- ret = bdrv_pread(bs->file, tb->offset,
- table, tb->size * BME_TABLE_ENTRY_SIZE);
+ ret = bdrv_pread(bs->file, tb->offset, table,
+ tb->size * BME_TABLE_ENTRY_SIZE, 0);
if (ret < 0) {
goto fail;
}
@@ -317,7 +317,7 @@ static int load_bitmap_data(BlockDriverState *bs,
* already cleared */
}
} else {
- ret = bdrv_pread(bs->file, data_offset, buf, s->cluster_size);
+ ret = bdrv_pread(bs->file, data_offset, buf, s->cluster_size, 0);
if (ret < 0) {
goto finish;
}
@@ -575,7 +575,7 @@ static Qcow2BitmapList *bitmap_list_load(BlockDriverState *bs, uint64_t offset,
}
dir_end = dir + size;
- ret = bdrv_pread(bs->file, offset, dir, size);
+ ret = bdrv_pread(bs->file, offset, dir, size, 0);
if (ret < 0) {
error_setg_errno(errp, -ret, "Failed to read bitmap directory");
goto fail;
@@ -798,7 +798,7 @@ static int bitmap_list_store(BlockDriverState *bs, Qcow2BitmapList *bm_list,
goto fail;
}
- ret = bdrv_pwrite(bs->file, dir_offset, dir, dir_size);
+ ret = bdrv_pwrite(bs->file, dir_offset, dir, dir_size, 0);
if (ret < 0) {
goto fail;
}
@@ -1339,7 +1339,7 @@ static uint64_t *store_bitmap_data(BlockDriverState *bs,
goto fail;
}
- ret = bdrv_pwrite(bs->file, off, buf, s->cluster_size);
+ ret = bdrv_pwrite(bs->file, off, buf, s->cluster_size, 0);
if (ret < 0) {
error_setg_errno(errp, -ret, "Failed to write bitmap '%s' to file",
bm_name);
@@ -1402,7 +1402,7 @@ static int store_bitmap(BlockDriverState *bs, Qcow2Bitmap *bm, Error **errp)
}
bitmap_table_to_be(tb, tb_size);
- ret = bdrv_pwrite(bs->file, tb_offset, tb, tb_size * sizeof(tb[0]));
+ ret = bdrv_pwrite(bs->file, tb_offset, tb, tb_size * sizeof(tb[0]), 0);
if (ret < 0) {
error_setg_errno(errp, -ret, "Failed to write bitmap '%s' to file",
bm_name);
diff --git a/block/qcow2-cache.c b/block/qcow2-cache.c
index 539f9ca2d5..e562e00c5c 100644
--- a/block/qcow2-cache.c
+++ b/block/qcow2-cache.c
@@ -224,7 +224,7 @@ static int qcow2_cache_entry_flush(BlockDriverState *bs, Qcow2Cache *c, int i)
}
ret = bdrv_pwrite(bs->file, c->entries[i].offset,
- qcow2_cache_get_table_addr(c, i), c->table_size);
+ qcow2_cache_get_table_addr(c, i), c->table_size, 0);
if (ret < 0) {
return ret;
}
@@ -379,9 +379,8 @@ static int qcow2_cache_do_get(BlockDriverState *bs, Qcow2Cache *c,
BLKDBG_EVENT(bs->file, BLKDBG_L2_LOAD);
}
- ret = bdrv_pread(bs->file, offset,
- qcow2_cache_get_table_addr(c, i),
- c->table_size);
+ ret = bdrv_pread(bs->file, offset, qcow2_cache_get_table_addr(c, i),
+ c->table_size, 0);
if (ret < 0) {
return ret;
}
diff --git a/block/qcow2-cluster.c b/block/qcow2-cluster.c
index 20a16ba6ee..ad7107a795 100644
--- a/block/qcow2-cluster.c
+++ b/block/qcow2-cluster.c
@@ -159,8 +159,8 @@ int qcow2_grow_l1_table(BlockDriverState *bs, uint64_t min_size,
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_sync(bs->file, new_l1_table_offset,
- new_l1_table, new_l1_size2);
+ ret = bdrv_pwrite_sync(bs->file, new_l1_table_offset, new_l1_table,
+ new_l1_size2, 0);
if (ret < 0)
goto fail;
for(i = 0; i < s->l1_size; i++)
@@ -170,8 +170,8 @@ int qcow2_grow_l1_table(BlockDriverState *bs, uint64_t min_size,
BLKDBG_EVENT(bs->file, BLKDBG_L1_GROW_ACTIVATE_TABLE);
stl_be_p(data, new_l1_size);
stq_be_p(data + 4, new_l1_table_offset);
- ret = bdrv_pwrite_sync(bs->file, offsetof(QCowHeader, l1_size),
- data, sizeof(data));
+ ret = bdrv_pwrite_sync(bs->file, offsetof(QCowHeader, l1_size), data,
+ sizeof(data), 0);
if (ret < 0) {
goto fail;
}
@@ -249,7 +249,7 @@ int qcow2_write_l1_entry(BlockDriverState *bs, int l1_index)
BLKDBG_EVENT(bs->file, BLKDBG_L1_UPDATE);
ret = bdrv_pwrite_sync(bs->file,
s->l1_table_offset + L1E_SIZE * l1_start_index,
- buf, bufsize);
+ buf, bufsize, 0);
if (ret < 0) {
return ret;
}
@@ -2260,7 +2260,8 @@ static int expand_zero_clusters_in_l1(BlockDriverState *bs, uint64_t *l1_table,
(void **)&l2_slice);
} else {
/* load inactive L2 tables from disk */
- ret = bdrv_pread(bs->file, slice_offset, l2_slice, slice_size2);
+ ret = bdrv_pread(bs->file, slice_offset, l2_slice,
+ slice_size2, 0);
}
if (ret < 0) {
goto fail;
@@ -2376,8 +2377,8 @@ static int expand_zero_clusters_in_l1(BlockDriverState *bs, uint64_t *l1_table,
goto fail;
}
- ret = bdrv_pwrite(bs->file, slice_offset,
- l2_slice, slice_size2);
+ ret = bdrv_pwrite(bs->file, slice_offset, l2_slice,
+ slice_size2, 0);
if (ret < 0) {
goto fail;
}
@@ -2470,8 +2471,8 @@ int qcow2_expand_zero_clusters(BlockDriverState *bs,
l1_table = new_l1_table;
- ret = bdrv_pread(bs->file, s->snapshots[i].l1_table_offset,
- l1_table, l1_size2);
+ ret = bdrv_pread(bs->file, s->snapshots[i].l1_table_offset, l1_table,
+ l1_size2, 0);
if (ret < 0) {
goto fail;
}
diff --git a/block/qcow2-refcount.c b/block/qcow2-refcount.c
index ed0ecfaa89..5aa2b61b6c 100644
--- a/block/qcow2-refcount.c
+++ b/block/qcow2-refcount.c
@@ -119,7 +119,7 @@ int qcow2_refcount_init(BlockDriverState *bs)
}
BLKDBG_EVENT(bs->file, BLKDBG_REFTABLE_LOAD);
ret = bdrv_pread(bs->file, s->refcount_table_offset,
- s->refcount_table, refcount_table_size2);
+ s->refcount_table, refcount_table_size2, 0);
if (ret < 0) {
goto fail;
}
@@ -439,7 +439,7 @@ static int alloc_refcount_block(BlockDriverState *bs,
BLKDBG_EVENT(bs->file, BLKDBG_REFBLOCK_ALLOC_HOOKUP);
ret = bdrv_pwrite_sync(bs->file, s->refcount_table_offset +
refcount_table_index * REFTABLE_ENTRY_SIZE,
- &data64, sizeof(data64));
+ &data64, sizeof(data64), 0);
if (ret < 0) {
goto fail;
}
@@ -685,7 +685,7 @@ int64_t qcow2_refcount_area(BlockDriverState *bs, uint64_t start_offset,
BLKDBG_EVENT(bs->file, BLKDBG_REFBLOCK_ALLOC_WRITE_TABLE);
ret = bdrv_pwrite_sync(bs->file, table_offset, new_table,
- table_size * REFTABLE_ENTRY_SIZE);
+ table_size * REFTABLE_ENTRY_SIZE, 0);
if (ret < 0) {
goto fail;
}
@@ -703,8 +703,8 @@ int64_t qcow2_refcount_area(BlockDriverState *bs, uint64_t start_offset,
data.d32 = cpu_to_be32(table_clusters);
BLKDBG_EVENT(bs->file, BLKDBG_REFBLOCK_ALLOC_SWITCH_TABLE);
ret = bdrv_pwrite_sync(bs->file,
- offsetof(QCowHeader, refcount_table_offset),
- &data, sizeof(data));
+ offsetof(QCowHeader, refcount_table_offset), &data,
+ sizeof(data), 0);
if (ret < 0) {
goto fail;
}
@@ -1274,7 +1274,7 @@ int qcow2_update_snapshot_refcount(BlockDriverState *bs,
}
l1_allocated = true;
- ret = bdrv_pread(bs->file, l1_table_offset, l1_table, l1_size2);
+ ret = bdrv_pread(bs->file, l1_table_offset, l1_table, l1_size2, 0);
if (ret < 0) {
goto fail;
}
@@ -1435,8 +1435,8 @@ fail:
cpu_to_be64s(&l1_table[i]);
}
- ret = bdrv_pwrite_sync(bs->file, l1_table_offset,
- l1_table, l1_size2);
+ ret = bdrv_pwrite_sync(bs->file, l1_table_offset, l1_table, l1_size2,
+ 0);
for (i = 0; i < l1_size; i++) {
be64_to_cpus(&l1_table[i]);
@@ -1634,7 +1634,7 @@ static int fix_l2_entry_by_zero(BlockDriverState *bs, BdrvCheckResult *res,
}
ret = bdrv_pwrite_sync(bs->file, l2e_offset, &l2_table[idx],
- l2_entry_size(s));
+ l2_entry_size(s), 0);
if (ret < 0) {
fprintf(stderr, "ERROR: Failed to overwrite L2 "
"table entry: %s\n", strerror(-ret));
@@ -1672,7 +1672,7 @@ static int check_refcounts_l2(BlockDriverState *bs, BdrvCheckResult *res,
bool metadata_overlap;
/* Read L2 table from disk */
- ret = bdrv_pread(bs->file, l2_offset, l2_table, l2_size_bytes);
+ ret = bdrv_pread(bs->file, l2_offset, l2_table, l2_size_bytes, 0);
if (ret < 0) {
fprintf(stderr, "ERROR: I/O error in check_refcounts_l2\n");
res->check_errors++;
@@ -1888,7 +1888,7 @@ static int check_refcounts_l1(BlockDriverState *bs,
}
/* Read L1 table entries from disk */
- ret = bdrv_pread(bs->file, l1_table_offset, l1_table, l1_size_bytes);
+ ret = bdrv_pread(bs->file, l1_table_offset, l1_table, l1_size_bytes, 0);
if (ret < 0) {
fprintf(stderr, "ERROR: I/O error in check_refcounts_l1\n");
res->check_errors++;
@@ -2005,7 +2005,7 @@ static int check_oflag_copied(BlockDriverState *bs, BdrvCheckResult *res,
}
ret = bdrv_pread(bs->file, l2_offset, l2_table,
- s->l2_size * l2_entry_size(s));
+ s->l2_size * l2_entry_size(s), 0);
if (ret < 0) {
fprintf(stderr, "ERROR: Could not read L2 table: %s\n",
strerror(-ret));
@@ -2058,8 +2058,8 @@ static int check_oflag_copied(BlockDriverState *bs, BdrvCheckResult *res,
goto fail;
}
- ret = bdrv_pwrite(bs->file, l2_offset, l2_table,
- s->cluster_size);
+ ret = bdrv_pwrite(bs->file, l2_offset, l2_table, s->cluster_size,
+ 0);
if (ret < 0) {
fprintf(stderr, "ERROR: Could not write L2 table: %s\n",
strerror(-ret));
@@ -2578,7 +2578,7 @@ static int rebuild_refcounts_write_refblocks(
refblock_index * s->cluster_size);
ret = bdrv_pwrite(bs->file, refblock_offset, on_disk_refblock,
- s->cluster_size);
+ s->cluster_size, 0);
if (ret < 0) {
error_setg_errno(errp, -ret, "ERROR writing refblock");
return ret;
@@ -2734,7 +2734,7 @@ static int rebuild_refcount_structure(BlockDriverState *bs,
assert(reftable_length < INT_MAX);
ret = bdrv_pwrite(bs->file, reftable_offset, on_disk_reftable,
- reftable_length);
+ reftable_length, 0);
if (ret < 0) {
error_setg_errno(errp, -ret, "ERROR writing reftable");
goto fail;
@@ -2747,7 +2747,7 @@ static int rebuild_refcount_structure(BlockDriverState *bs,
ret = bdrv_pwrite_sync(bs->file,
offsetof(QCowHeader, refcount_table_offset),
&reftable_offset_and_clusters,
- sizeof(reftable_offset_and_clusters));
+ sizeof(reftable_offset_and_clusters), 0);
if (ret < 0) {
error_setg_errno(errp, -ret, "ERROR setting reftable");
goto fail;
@@ -3009,7 +3009,7 @@ int qcow2_check_metadata_overlap(BlockDriverState *bs, int ign, int64_t offset,
return -ENOMEM;
}
- ret = bdrv_pread(bs->file, l1_ofs, l1, l1_sz2);
+ ret = bdrv_pread(bs->file, l1_ofs, l1, l1_sz2, 0);
if (ret < 0) {
g_free(l1);
return ret;
@@ -3180,7 +3180,7 @@ static int flush_refblock(BlockDriverState *bs, uint64_t **reftable,
return ret;
}
- ret = bdrv_pwrite(bs->file, offset, refblock, s->cluster_size);
+ ret = bdrv_pwrite(bs->file, offset, refblock, s->cluster_size, 0);
if (ret < 0) {
error_setg_errno(errp, -ret, "Failed to write refblock");
return ret;
@@ -3453,7 +3453,7 @@ int qcow2_change_refcount_order(BlockDriverState *bs, int refcount_order,
}
ret = bdrv_pwrite(bs->file, new_reftable_offset, new_reftable,
- new_reftable_size * REFTABLE_ENTRY_SIZE);
+ new_reftable_size * REFTABLE_ENTRY_SIZE, 0);
for (i = 0; i < new_reftable_size; i++) {
be64_to_cpus(&new_reftable[i]);
@@ -3657,7 +3657,7 @@ int qcow2_shrink_reftable(BlockDriverState *bs)
}
ret = bdrv_pwrite_sync(bs->file, s->refcount_table_offset, reftable_tmp,
- s->refcount_table_size * REFTABLE_ENTRY_SIZE);
+ s->refcount_table_size * REFTABLE_ENTRY_SIZE, 0);
/*
* If the write in the reftable failed the image may contain a partially
* overwritten reftable. In this case it would be better to clear the
diff --git a/block/qcow2-snapshot.c b/block/qcow2-snapshot.c
index 075269a023..dc62b0197c 100644
--- a/block/qcow2-snapshot.c
+++ b/block/qcow2-snapshot.c
@@ -108,7 +108,7 @@ static int qcow2_do_read_snapshots(BlockDriverState *bs, bool repair,
/* Read statically sized part of the snapshot header */
offset = ROUND_UP(offset, 8);
- ret = bdrv_pread(bs->file, offset, &h, sizeof(h));
+ ret = bdrv_pread(bs->file, offset, &h, sizeof(h), 0);
if (ret < 0) {
error_setg_errno(errp, -ret, "Failed to read snapshot table");
goto fail;
@@ -147,7 +147,7 @@ static int qcow2_do_read_snapshots(BlockDriverState *bs, bool repair,
/* Read known extra data */
ret = bdrv_pread(bs->file, offset, &extra,
- MIN(sizeof(extra), sn->extra_data_size));
+ MIN(sizeof(extra), sn->extra_data_size), 0);
if (ret < 0) {
error_setg_errno(errp, -ret, "Failed to read snapshot table");
goto fail;
@@ -185,7 +185,7 @@ static int qcow2_do_read_snapshots(BlockDriverState *bs, bool repair,
unknown_extra_data_size = sn->extra_data_size - sizeof(extra);
sn->unknown_extra_data = g_malloc(unknown_extra_data_size);
ret = bdrv_pread(bs->file, offset, sn->unknown_extra_data,
- unknown_extra_data_size);
+ unknown_extra_data_size, 0);
if (ret < 0) {
error_setg_errno(errp, -ret,
"Failed to read snapshot table");
@@ -196,7 +196,7 @@ static int qcow2_do_read_snapshots(BlockDriverState *bs, bool repair,
/* 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, offset, sn->id_str, id_str_size, 0);
if (ret < 0) {
error_setg_errno(errp, -ret, "Failed to read snapshot table");
goto fail;
@@ -206,7 +206,7 @@ static int qcow2_do_read_snapshots(BlockDriverState *bs, bool repair,
/* 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, offset, sn->name, name_size, 0);
if (ret < 0) {
error_setg_errno(errp, -ret, "Failed to read snapshot table");
goto fail;
@@ -349,13 +349,13 @@ int qcow2_write_snapshots(BlockDriverState *bs)
h.name_size = cpu_to_be16(name_size);
offset = ROUND_UP(offset, 8);
- ret = bdrv_pwrite(bs->file, offset, &h, sizeof(h));
+ ret = bdrv_pwrite(bs->file, offset, &h, sizeof(h), 0);
if (ret < 0) {
goto fail;
}
offset += sizeof(h);
- ret = bdrv_pwrite(bs->file, offset, &extra, sizeof(extra));
+ ret = bdrv_pwrite(bs->file, offset, &extra, sizeof(extra), 0);
if (ret < 0) {
goto fail;
}
@@ -370,20 +370,20 @@ int qcow2_write_snapshots(BlockDriverState *bs)
assert(sn->unknown_extra_data);
ret = bdrv_pwrite(bs->file, offset, sn->unknown_extra_data,
- unknown_extra_data_size);
+ unknown_extra_data_size, 0);
if (ret < 0) {
goto fail;
}
offset += unknown_extra_data_size;
}
- ret = bdrv_pwrite(bs->file, offset, sn->id_str, id_str_size);
+ ret = bdrv_pwrite(bs->file, offset, sn->id_str, id_str_size, 0);
if (ret < 0) {
goto fail;
}
offset += id_str_size;
- ret = bdrv_pwrite(bs->file, offset, sn->name, name_size);
+ ret = bdrv_pwrite(bs->file, offset, sn->name, name_size, 0);
if (ret < 0) {
goto fail;
}
@@ -406,7 +406,7 @@ int qcow2_write_snapshots(BlockDriverState *bs)
header_data.snapshots_offset = cpu_to_be64(snapshots_offset);
ret = bdrv_pwrite_sync(bs->file, offsetof(QCowHeader, nb_snapshots),
- &header_data, sizeof(header_data));
+ &header_data, sizeof(header_data), 0);
if (ret < 0) {
goto fail;
}
@@ -442,7 +442,8 @@ int coroutine_fn qcow2_check_read_snapshot_table(BlockDriverState *bs,
/* qcow2_do_open() discards this information in check mode */
ret = bdrv_pread(bs->file, offsetof(QCowHeader, nb_snapshots),
- &snapshot_table_pointer, sizeof(snapshot_table_pointer));
+ &snapshot_table_pointer, sizeof(snapshot_table_pointer),
+ 0);
if (ret < 0) {
result->check_errors++;
fprintf(stderr, "ERROR failed to read the snapshot table pointer from "
@@ -513,7 +514,7 @@ int coroutine_fn qcow2_check_read_snapshot_table(BlockDriverState *bs,
snapshot_table_pointer.nb_snapshots = cpu_to_be32(s->nb_snapshots);
ret = bdrv_pwrite_sync(bs->file, offsetof(QCowHeader, nb_snapshots),
&snapshot_table_pointer.nb_snapshots,
- sizeof(snapshot_table_pointer.nb_snapshots));
+ sizeof(snapshot_table_pointer.nb_snapshots), 0);
if (ret < 0) {
result->check_errors++;
fprintf(stderr, "ERROR failed to update the snapshot count in the "
@@ -694,7 +695,7 @@ int qcow2_snapshot_create(BlockDriverState *bs, QEMUSnapshotInfo *sn_info)
}
ret = bdrv_pwrite(bs->file, sn->l1_table_offset, l1_table,
- s->l1_size * L1E_SIZE);
+ s->l1_size * L1E_SIZE, 0);
if (ret < 0) {
goto fail;
}
@@ -829,8 +830,8 @@ 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, sn->l1_table_offset, sn_l1_table, sn_l1_bytes,
+ 0);
if (ret < 0) {
goto fail;
}
@@ -849,7 +850,7 @@ int qcow2_snapshot_goto(BlockDriverState *bs, const char *snapshot_id)
}
ret = bdrv_pwrite_sync(bs->file, s->l1_table_offset, sn_l1_table,
- cur_l1_bytes);
+ cur_l1_bytes, 0);
if (ret < 0) {
goto fail;
}
@@ -1051,8 +1052,8 @@ int qcow2_snapshot_load_tmp(BlockDriverState *bs,
return -ENOMEM;
}
- ret = bdrv_pread(bs->file, sn->l1_table_offset,
- new_l1_table, new_l1_bytes);
+ ret = bdrv_pread(bs->file, sn->l1_table_offset, new_l1_table,
+ new_l1_bytes, 0);
if (ret < 0) {
error_setg(errp, "Failed to read l1 table for snapshot");
qemu_vfree(new_l1_table);
diff --git a/block/qcow2.c b/block/qcow2.c
index 4f5e6440fb..99192d1242 100644
--- a/block/qcow2.c
+++ b/block/qcow2.c
@@ -107,8 +107,8 @@ static ssize_t qcow2_crypto_hdr_read_func(QCryptoBlock *block, size_t offset,
return -1;
}
- ret = bdrv_pread(bs->file,
- s->crypto_header.offset + offset, buf, buflen);
+ ret = bdrv_pread(bs->file, s->crypto_header.offset + offset, buf, buflen,
+ 0);
if (ret < 0) {
error_setg_errno(errp, -ret, "Could not read encryption header");
return -1;
@@ -168,8 +168,8 @@ static ssize_t qcow2_crypto_hdr_write_func(QCryptoBlock *block, size_t offset,
return -1;
}
- ret = bdrv_pwrite(bs->file,
- s->crypto_header.offset + offset, buf, buflen);
+ ret = bdrv_pwrite(bs->file, s->crypto_header.offset + offset, buf, buflen,
+ 0);
if (ret < 0) {
error_setg_errno(errp, -ret, "Could not read encryption header");
return -1;
@@ -227,7 +227,7 @@ static int qcow2_read_extensions(BlockDriverState *bs, uint64_t start_offset,
printf("attempting to read extended header in offset %lu\n", offset);
#endif
- ret = bdrv_pread(bs->file, offset, &ext, sizeof(ext));
+ ret = bdrv_pread(bs->file, offset, &ext, sizeof(ext), 0);
if (ret < 0) {
error_setg_errno(errp, -ret, "qcow2_read_extension: ERROR: "
"pread fail from offset %" PRIu64, offset);
@@ -255,7 +255,7 @@ static int qcow2_read_extensions(BlockDriverState *bs, uint64_t start_offset,
sizeof(bs->backing_format));
return 2;
}
- ret = bdrv_pread(bs->file, offset, bs->backing_format, ext.len);
+ ret = bdrv_pread(bs->file, offset, bs->backing_format, ext.len, 0);
if (ret < 0) {
error_setg_errno(errp, -ret, "ERROR: ext_backing_format: "
"Could not read format name");
@@ -271,7 +271,7 @@ static int qcow2_read_extensions(BlockDriverState *bs, uint64_t start_offset,
case QCOW2_EXT_MAGIC_FEATURE_TABLE:
if (p_feature_table != NULL) {
void *feature_table = g_malloc0(ext.len + 2 * sizeof(Qcow2Feature));
- ret = bdrv_pread(bs->file, offset , feature_table, ext.len);
+ ret = bdrv_pread(bs->file, offset, feature_table, ext.len, 0);
if (ret < 0) {
error_setg_errno(errp, -ret, "ERROR: ext_feature_table: "
"Could not read table");
@@ -296,7 +296,7 @@ static int qcow2_read_extensions(BlockDriverState *bs, uint64_t start_offset,
return -EINVAL;
}
- ret = bdrv_pread(bs->file, offset, &s->crypto_header, ext.len);
+ ret = bdrv_pread(bs->file, offset, &s->crypto_header, ext.len, 0);
if (ret < 0) {
error_setg_errno(errp, -ret,
"Unable to read CRYPTO header extension");
@@ -352,7 +352,7 @@ static int qcow2_read_extensions(BlockDriverState *bs, uint64_t start_offset,
break;
}
- ret = bdrv_pread(bs->file, offset, &bitmaps_ext, ext.len);
+ ret = bdrv_pread(bs->file, offset, &bitmaps_ext, ext.len, 0);
if (ret < 0) {
error_setg_errno(errp, -ret, "bitmaps_ext: "
"Could not read ext header");
@@ -416,7 +416,7 @@ static int qcow2_read_extensions(BlockDriverState *bs, uint64_t start_offset,
case QCOW2_EXT_MAGIC_DATA_FILE:
{
s->image_data_file = g_malloc0(ext.len + 1);
- ret = bdrv_pread(bs->file, offset, s->image_data_file, ext.len);
+ ret = bdrv_pread(bs->file, offset, s->image_data_file, ext.len, 0);
if (ret < 0) {
error_setg_errno(errp, -ret,
"ERROR: Could not read data file name");
@@ -440,7 +440,7 @@ static int qcow2_read_extensions(BlockDriverState *bs, uint64_t start_offset,
uext->len = ext.len;
QLIST_INSERT_HEAD(&s->unknown_header_ext, uext, next);
- ret = bdrv_pread(bs->file, offset , uext->data, uext->len);
+ ret = bdrv_pread(bs->file, offset, uext->data, uext->len, 0);
if (ret < 0) {
error_setg_errno(errp, -ret, "ERROR: unknown extension: "
"Could not read data");
@@ -517,7 +517,7 @@ int qcow2_mark_dirty(BlockDriverState *bs)
val = cpu_to_be64(s->incompatible_features | QCOW2_INCOMPAT_DIRTY);
ret = bdrv_pwrite(bs->file, offsetof(QCowHeader, incompatible_features),
- &val, sizeof(val));
+ &val, sizeof(val), 0);
if (ret < 0) {
return ret;
}
@@ -1308,7 +1308,7 @@ static int coroutine_fn qcow2_do_open(BlockDriverState *bs, QDict *options,
uint64_t l1_vm_state_index;
bool update_header = false;
- ret = bdrv_pread(bs->file, 0, &header, sizeof(header));
+ ret = bdrv_pread(bs->file, 0, &header, sizeof(header), 0);
if (ret < 0) {
error_setg_errno(errp, -ret, "Could not read qcow2 header");
goto fail;
@@ -1385,7 +1385,7 @@ static int coroutine_fn qcow2_do_open(BlockDriverState *bs, QDict *options,
s->unknown_header_fields_size = header.header_length - sizeof(header);
s->unknown_header_fields = g_malloc(s->unknown_header_fields_size);
ret = bdrv_pread(bs->file, sizeof(header), s->unknown_header_fields,
- s->unknown_header_fields_size);
+ s->unknown_header_fields_size, 0);
if (ret < 0) {
error_setg_errno(errp, -ret, "Could not read unknown qcow2 header "
"fields");
@@ -1581,7 +1581,7 @@ static int coroutine_fn qcow2_do_open(BlockDriverState *bs, QDict *options,
goto fail;
}
ret = bdrv_pread(bs->file, s->l1_table_offset, s->l1_table,
- s->l1_size * L1E_SIZE);
+ s->l1_size * L1E_SIZE, 0);
if (ret < 0) {
error_setg_errno(errp, -ret, "Could not read L1 table");
goto fail;
@@ -1699,7 +1699,7 @@ static int coroutine_fn qcow2_do_open(BlockDriverState *bs, QDict *options,
goto fail;
}
ret = bdrv_pread(bs->file, header.backing_file_offset,
- bs->auto_backing_file, len);
+ bs->auto_backing_file, len, 0);
if (ret < 0) {
error_setg_errno(errp, -ret, "Could not read backing file name");
goto fail;
@@ -3081,7 +3081,7 @@ int qcow2_update_header(BlockDriverState *bs)
}
/* Write the new header */
- ret = bdrv_pwrite(bs->file, 0, header, s->cluster_size);
+ ret = bdrv_pwrite(bs->file, 0, header, s->cluster_size, 0);
if (ret < 0) {
goto fail;
}
@@ -4550,8 +4550,8 @@ static int coroutine_fn qcow2_co_truncate(BlockDriverState *bs, int64_t offset,
/* write updated header.size */
offset = cpu_to_be64(offset);
- ret = bdrv_pwrite_sync(bs->file, offsetof(QCowHeader, size),
- &offset, sizeof(offset));
+ ret = bdrv_pwrite_sync(bs->file, offsetof(QCowHeader, size), &offset,
+ sizeof(offset), 0);
if (ret < 0) {
error_setg_errno(errp, -ret, "Failed to update the image size");
goto fail;
@@ -4828,7 +4828,7 @@ static int make_completely_empty(BlockDriverState *bs)
l1_ofs_rt_ofs_cls.reftable_offset = cpu_to_be64(s->cluster_size);
l1_ofs_rt_ofs_cls.reftable_clusters = cpu_to_be32(1);
ret = bdrv_pwrite_sync(bs->file, offsetof(QCowHeader, l1_table_offset),
- &l1_ofs_rt_ofs_cls, sizeof(l1_ofs_rt_ofs_cls));
+ &l1_ofs_rt_ofs_cls, sizeof(l1_ofs_rt_ofs_cls), 0);
if (ret < 0) {
goto fail_broken_refcounts;
}
@@ -4859,8 +4859,8 @@ static int make_completely_empty(BlockDriverState *bs)
/* Enter the first refblock into the reftable */
rt_entry = cpu_to_be64(2 * s->cluster_size);
- ret = bdrv_pwrite_sync(bs->file, s->cluster_size,
- &rt_entry, sizeof(rt_entry));
+ ret = bdrv_pwrite_sync(bs->file, s->cluster_size, &rt_entry,
+ sizeof(rt_entry), 0);
if (ret < 0) {
goto fail_broken_refcounts;
}
diff --git a/block/qed.c b/block/qed.c
index f34d9a3ac1..ad86079941 100644
--- a/block/qed.c
+++ b/block/qed.c
@@ -90,7 +90,7 @@ int qed_write_header_sync(BDRVQEDState *s)
int ret;
qed_header_cpu_to_le(&s->header, &le);
- ret = bdrv_pwrite(s->bs->file, 0, &le, sizeof(le));
+ ret = bdrv_pwrite(s->bs->file, 0, &le, sizeof(le), 0);
if (ret != sizeof(le)) {
return ret;
}
@@ -207,7 +207,7 @@ static int qed_read_string(BdrvChild *file, uint64_t offset, size_t n,
if (n >= buflen) {
return -EINVAL;
}
- ret = bdrv_pread(file, offset, buf, n);
+ ret = bdrv_pread(file, offset, buf, n, 0);
if (ret < 0) {
return ret;
}
@@ -392,7 +392,7 @@ static int coroutine_fn bdrv_qed_do_open(BlockDriverState *bs, QDict *options,
int64_t file_size;
int ret;
- ret = bdrv_pread(bs->file, 0, &le_header, sizeof(le_header));
+ ret = bdrv_pread(bs->file, 0, &le_header, sizeof(le_header), 0);
if (ret < 0) {
error_setg(errp, "Failed to read QED header");
return ret;
@@ -1545,7 +1545,7 @@ static int bdrv_qed_change_backing_file(BlockDriverState *bs,
}
/* Write new header */
- ret = bdrv_pwrite_sync(bs->file, 0, buffer, buffer_len);
+ ret = bdrv_pwrite_sync(bs->file, 0, buffer, buffer_len, 0);
g_free(buffer);
if (ret == 0) {
memcpy(&s->header, &new_header, sizeof(new_header));
diff --git a/block/vdi.c b/block/vdi.c
index cca3a3a356..76cec1b883 100644
--- a/block/vdi.c
+++ b/block/vdi.c
@@ -385,7 +385,7 @@ static int vdi_open(BlockDriverState *bs, QDict *options, int flags,
logout("\n");
- ret = bdrv_pread(bs->file, 0, &header, sizeof(header));
+ ret = bdrv_pread(bs->file, 0, &header, sizeof(header), 0);
if (ret < 0) {
goto fail;
}
@@ -486,7 +486,7 @@ static int vdi_open(BlockDriverState *bs, QDict *options, int flags,
}
ret = bdrv_pread(bs->file, header.offset_bmap, s->bmap,
- bmap_size * SECTOR_SIZE);
+ bmap_size * SECTOR_SIZE, 0);
if (ret < 0) {
goto fail_free_bmap;
}
@@ -664,7 +664,7 @@ vdi_co_pwritev(BlockDriverState *bs, int64_t offset, int64_t bytes,
* so this full-cluster write does not overlap a partial write
* of the same cluster, issued from the "else" branch.
*/
- ret = bdrv_pwrite(bs->file, data_offset, block, s->block_size);
+ ret = bdrv_pwrite(bs->file, data_offset, block, s->block_size, 0);
qemu_co_rwlock_unlock(&s->bmap_lock);
} else {
nonallocating_write:
@@ -709,7 +709,7 @@ nonallocating_write:
assert(VDI_IS_ALLOCATED(bmap_first));
*header = s->header;
vdi_header_to_le(header);
- ret = bdrv_pwrite(bs->file, 0, header, sizeof(*header));
+ ret = bdrv_pwrite(bs->file, 0, header, sizeof(*header), 0);
g_free(header);
if (ret < 0) {
@@ -727,7 +727,7 @@ nonallocating_write:
logout("will write %u block map sectors starting from entry %u\n",
n_sectors, bmap_first);
ret = bdrv_pwrite(bs->file, offset * SECTOR_SIZE, base,
- n_sectors * SECTOR_SIZE);
+ n_sectors * SECTOR_SIZE, 0);
}
return ret < 0 ? ret : 0;
diff --git a/block/vhdx-log.c b/block/vhdx-log.c
index ff0d4e0da0..da0057000b 100644
--- a/block/vhdx-log.c
+++ b/block/vhdx-log.c
@@ -84,7 +84,7 @@ static int vhdx_log_peek_hdr(BlockDriverState *bs, VHDXLogEntries *log,
offset = log->offset + read;
- ret = bdrv_pread(bs->file, offset, hdr, sizeof(VHDXLogEntryHeader));
+ ret = bdrv_pread(bs->file, offset, hdr, sizeof(VHDXLogEntryHeader), 0);
if (ret < 0) {
goto exit;
}
@@ -144,7 +144,7 @@ static int vhdx_log_read_sectors(BlockDriverState *bs, VHDXLogEntries *log,
}
offset = log->offset + read;
- ret = bdrv_pread(bs->file, offset, buffer, VHDX_LOG_SECTOR_SIZE);
+ ret = bdrv_pread(bs->file, offset, buffer, VHDX_LOG_SECTOR_SIZE, 0);
if (ret < 0) {
goto exit;
}
@@ -194,8 +194,8 @@ static int vhdx_log_write_sectors(BlockDriverState *bs, VHDXLogEntries *log,
/* full */
break;
}
- ret = bdrv_pwrite(bs->file, offset, buffer_tmp,
- VHDX_LOG_SECTOR_SIZE);
+ ret = bdrv_pwrite(bs->file, offset, buffer_tmp, VHDX_LOG_SECTOR_SIZE,
+ 0);
if (ret < 0) {
goto exit;
}
@@ -467,7 +467,7 @@ static int vhdx_log_flush_desc(BlockDriverState *bs, VHDXLogDescriptor *desc,
/* count is only > 1 if we are writing zeroes */
for (i = 0; i < count; i++) {
ret = bdrv_pwrite_sync(bs->file, file_offset, buffer,
- VHDX_LOG_SECTOR_SIZE);
+ VHDX_LOG_SECTOR_SIZE, 0);
if (ret < 0) {
goto exit;
}
@@ -971,7 +971,7 @@ static int vhdx_log_write(BlockDriverState *bs, BDRVVHDXState *s,
if (i == 0 && leading_length) {
/* partial sector at the front of the buffer */
ret = bdrv_pread(bs->file, file_offset, merged_sector,
- VHDX_LOG_SECTOR_SIZE);
+ VHDX_LOG_SECTOR_SIZE, 0);
if (ret < 0) {
goto exit;
}
@@ -980,10 +980,9 @@ static int vhdx_log_write(BlockDriverState *bs, BDRVVHDXState *s,
sector_write = merged_sector;
} else if (i == sectors - 1 && trailing_length) {
/* partial sector at the end of the buffer */
- ret = bdrv_pread(bs->file,
- file_offset,
- merged_sector + trailing_length,
- VHDX_LOG_SECTOR_SIZE - trailing_length);
+ ret = bdrv_pread(bs->file, file_offset,
+ merged_sector + trailing_length,
+ VHDX_LOG_SECTOR_SIZE - trailing_length, 0);
if (ret < 0) {
goto exit;
}
diff --git a/block/vhdx.c b/block/vhdx.c
index 410c6f9610..f5c812c9cf 100644
--- a/block/vhdx.c
+++ b/block/vhdx.c
@@ -326,7 +326,7 @@ static int vhdx_write_header(BdrvChild *file, VHDXHeader *hdr,
buffer = qemu_blockalign(bs_file, VHDX_HEADER_SIZE);
if (read) {
/* if true, we can't assume the extra reserved bytes are 0 */
- ret = bdrv_pread(file, offset, buffer, VHDX_HEADER_SIZE);
+ ret = bdrv_pread(file, offset, buffer, VHDX_HEADER_SIZE, 0);
if (ret < 0) {
goto exit;
}
@@ -340,7 +340,7 @@ static int vhdx_write_header(BdrvChild *file, VHDXHeader *hdr,
vhdx_header_le_export(hdr, header_le);
vhdx_update_checksum(buffer, VHDX_HEADER_SIZE,
offsetof(VHDXHeader, checksum));
- ret = bdrv_pwrite_sync(file, offset, header_le, sizeof(VHDXHeader));
+ ret = bdrv_pwrite_sync(file, offset, header_le, sizeof(VHDXHeader), 0);
exit:
qemu_vfree(buffer);
@@ -440,8 +440,8 @@ static void vhdx_parse_header(BlockDriverState *bs, BDRVVHDXState *s,
/* We have to read the whole VHDX_HEADER_SIZE instead of
* sizeof(VHDXHeader), because the checksum is over the whole
* region */
- ret = bdrv_pread(bs->file, VHDX_HEADER1_OFFSET, buffer,
- VHDX_HEADER_SIZE);
+ ret = bdrv_pread(bs->file, VHDX_HEADER1_OFFSET, buffer, VHDX_HEADER_SIZE,
+ 0);
if (ret < 0) {
goto fail;
}
@@ -457,8 +457,8 @@ static void vhdx_parse_header(BlockDriverState *bs, BDRVVHDXState *s,
}
}
- ret = bdrv_pread(bs->file, VHDX_HEADER2_OFFSET, buffer,
- VHDX_HEADER_SIZE);
+ ret = bdrv_pread(bs->file, VHDX_HEADER2_OFFSET, buffer, VHDX_HEADER_SIZE,
+ 0);
if (ret < 0) {
goto fail;
}
@@ -532,7 +532,7 @@ static int vhdx_open_region_tables(BlockDriverState *bs, BDRVVHDXState *s)
buffer = qemu_blockalign(bs, VHDX_HEADER_BLOCK_SIZE);
ret = bdrv_pread(bs->file, VHDX_REGION_TABLE_OFFSET, buffer,
- VHDX_HEADER_BLOCK_SIZE);
+ VHDX_HEADER_BLOCK_SIZE, 0);
if (ret < 0) {
goto fail;
}
@@ -645,7 +645,7 @@ static int vhdx_parse_metadata(BlockDriverState *bs, BDRVVHDXState *s)
buffer = qemu_blockalign(bs, VHDX_METADATA_TABLE_MAX_SIZE);
ret = bdrv_pread(bs->file, s->metadata_rt.file_offset, buffer,
- VHDX_METADATA_TABLE_MAX_SIZE);
+ VHDX_METADATA_TABLE_MAX_SIZE, 0);
if (ret < 0) {
goto exit;
}
@@ -751,7 +751,8 @@ static int vhdx_parse_metadata(BlockDriverState *bs, BDRVVHDXState *s)
s->metadata_entries.file_parameters_entry.offset
+ s->metadata_rt.file_offset,
&s->params,
- sizeof(s->params));
+ sizeof(s->params),
+ 0);
if (ret < 0) {
goto exit;
@@ -786,7 +787,8 @@ static int vhdx_parse_metadata(BlockDriverState *bs, BDRVVHDXState *s)
s->metadata_entries.virtual_disk_size_entry.offset
+ s->metadata_rt.file_offset,
&s->virtual_disk_size,
- sizeof(uint64_t));
+ sizeof(uint64_t),
+ 0);
if (ret < 0) {
goto exit;
}
@@ -794,7 +796,8 @@ static int vhdx_parse_metadata(BlockDriverState *bs, BDRVVHDXState *s)
s->metadata_entries.logical_sector_size_entry.offset
+ s->metadata_rt.file_offset,
&s->logical_sector_size,
- sizeof(uint32_t));
+ sizeof(uint32_t),
+ 0);
if (ret < 0) {
goto exit;
}
@@ -802,7 +805,8 @@ static int vhdx_parse_metadata(BlockDriverState *bs, BDRVVHDXState *s)
s->metadata_entries.phys_sector_size_entry.offset
+ s->metadata_rt.file_offset,
&s->physical_sector_size,
- sizeof(uint32_t));
+ sizeof(uint32_t),
+ 0);
if (ret < 0) {
goto exit;
}
@@ -1010,7 +1014,7 @@ static int vhdx_open(BlockDriverState *bs, QDict *options, int flags,
QLIST_INIT(&s->regions);
/* validate the file signature */
- ret = bdrv_pread(bs->file, 0, &signature, sizeof(uint64_t));
+ ret = bdrv_pread(bs->file, 0, &signature, sizeof(uint64_t), 0);
if (ret < 0) {
goto fail;
}
@@ -1069,7 +1073,7 @@ static int vhdx_open(BlockDriverState *bs, QDict *options, int flags,
goto fail;
}
- ret = bdrv_pread(bs->file, s->bat_offset, s->bat, s->bat_rt.length);
+ ret = bdrv_pread(bs->file, s->bat_offset, s->bat, s->bat_rt.length, 0);
if (ret < 0) {
goto fail;
}
diff --git a/block/vmdk.c b/block/vmdk.c
index 38e5ab3806..4ad09ca07b 100644
--- a/block/vmdk.c
+++ b/block/vmdk.c
@@ -307,7 +307,7 @@ static int vmdk_read_cid(BlockDriverState *bs, int parent, uint32_t *pcid)
int ret;
desc = g_malloc0(DESC_SIZE);
- ret = bdrv_pread(bs->file, s->desc_offset, desc, DESC_SIZE);
+ ret = bdrv_pread(bs->file, s->desc_offset, desc, DESC_SIZE, 0);
if (ret < 0) {
goto out;
}
@@ -348,7 +348,7 @@ static int vmdk_write_cid(BlockDriverState *bs, uint32_t cid)
desc = g_malloc0(DESC_SIZE);
tmp_desc = g_malloc0(DESC_SIZE);
- ret = bdrv_pread(bs->file, s->desc_offset, desc, DESC_SIZE);
+ ret = bdrv_pread(bs->file, s->desc_offset, desc, DESC_SIZE, 0);
if (ret < 0) {
goto out;
}
@@ -368,7 +368,7 @@ static int vmdk_write_cid(BlockDriverState *bs, uint32_t cid)
pstrcat(desc, DESC_SIZE, tmp_desc);
}
- ret = bdrv_pwrite_sync(bs->file, s->desc_offset, desc, DESC_SIZE);
+ ret = bdrv_pwrite_sync(bs->file, s->desc_offset, desc, DESC_SIZE, 0);
out:
g_free(desc);
@@ -469,7 +469,7 @@ static int vmdk_parent_open(BlockDriverState *bs)
int ret;
desc = g_malloc0(DESC_SIZE + 1);
- ret = bdrv_pread(bs->file, s->desc_offset, desc, DESC_SIZE);
+ ret = bdrv_pread(bs->file, s->desc_offset, desc, DESC_SIZE, 0);
if (ret < 0) {
goto out;
}
@@ -589,10 +589,8 @@ static int vmdk_init_tables(BlockDriverState *bs, VmdkExtent *extent,
return -ENOMEM;
}
- ret = bdrv_pread(extent->file,
- extent->l1_table_offset,
- extent->l1_table,
- l1_size);
+ ret = bdrv_pread(extent->file, extent->l1_table_offset, extent->l1_table,
+ l1_size, 0);
if (ret < 0) {
bdrv_refresh_filename(extent->file->bs);
error_setg_errno(errp, -ret,
@@ -616,10 +614,8 @@ static int vmdk_init_tables(BlockDriverState *bs, VmdkExtent *extent,
ret = -ENOMEM;
goto fail_l1;
}
- ret = bdrv_pread(extent->file,
- extent->l1_backup_table_offset,
- extent->l1_backup_table,
- l1_size);
+ ret = bdrv_pread(extent->file, extent->l1_backup_table_offset,
+ extent->l1_backup_table, l1_size, 0);
if (ret < 0) {
bdrv_refresh_filename(extent->file->bs);
error_setg_errno(errp, -ret,
@@ -651,7 +647,7 @@ static int vmdk_open_vmfs_sparse(BlockDriverState *bs,
VMDK3Header header;
VmdkExtent *extent = NULL;
- ret = bdrv_pread(file, sizeof(magic), &header, sizeof(header));
+ ret = bdrv_pread(file, sizeof(magic), &header, sizeof(header), 0);
if (ret < 0) {
bdrv_refresh_filename(file->bs);
error_setg_errno(errp, -ret,
@@ -815,7 +811,7 @@ static int vmdk_open_se_sparse(BlockDriverState *bs,
assert(sizeof(const_header) == SECTOR_SIZE);
- ret = bdrv_pread(file, 0, &const_header, sizeof(const_header));
+ ret = bdrv_pread(file, 0, &const_header, sizeof(const_header), 0);
if (ret < 0) {
bdrv_refresh_filename(file->bs);
error_setg_errno(errp, -ret,
@@ -832,9 +828,8 @@ static int vmdk_open_se_sparse(BlockDriverState *bs,
assert(sizeof(volatile_header) == SECTOR_SIZE);
- ret = bdrv_pread(file,
- const_header.volatile_header_offset * SECTOR_SIZE,
- &volatile_header, sizeof(volatile_header));
+ ret = bdrv_pread(file, const_header.volatile_header_offset * SECTOR_SIZE,
+ &volatile_header, sizeof(volatile_header), 0);
if (ret < 0) {
bdrv_refresh_filename(file->bs);
error_setg_errno(errp, -ret,
@@ -904,7 +899,7 @@ static char *vmdk_read_desc(BdrvChild *file, uint64_t desc_offset, Error **errp)
size = MIN(size, (1 << 20) - 1); /* avoid unbounded allocation */
buf = g_malloc(size + 1);
- ret = bdrv_pread(file, desc_offset, buf, size);
+ ret = bdrv_pread(file, desc_offset, buf, size, 0);
if (ret < 0) {
error_setg_errno(errp, -ret, "Could not read from file");
g_free(buf);
@@ -928,7 +923,7 @@ static int vmdk_open_vmdk4(BlockDriverState *bs,
int64_t l1_backup_offset = 0;
bool compressed;
- ret = bdrv_pread(file, sizeof(magic), &header, sizeof(header));
+ ret = bdrv_pread(file, sizeof(magic), &header, sizeof(header), 0);
if (ret < 0) {
bdrv_refresh_filename(file->bs);
error_setg_errno(errp, -ret,
@@ -979,9 +974,8 @@ static int vmdk_open_vmdk4(BlockDriverState *bs,
} QEMU_PACKED eos_marker;
} QEMU_PACKED footer;
- ret = bdrv_pread(file,
- bs->file->bs->total_sectors * 512 - 1536,
- &footer, sizeof(footer));
+ ret = bdrv_pread(file, bs->file->bs->total_sectors * 512 - 1536,
+ &footer, sizeof(footer), 0);
if (ret < 0) {
error_setg_errno(errp, -ret, "Failed to read footer");
return ret;
@@ -1449,7 +1443,7 @@ static int get_whole_cluster(BlockDriverState *bs,
/* qcow2 emits this on bs->file instead of bs->backing */
BLKDBG_EVENT(extent->file, BLKDBG_COW_READ);
ret = bdrv_pread(bs->backing, offset, whole_grain,
- skip_start_bytes);
+ skip_start_bytes, 0);
if (ret < 0) {
ret = VMDK_ERROR;
goto exit;
@@ -1457,7 +1451,7 @@ static int get_whole_cluster(BlockDriverState *bs,
}
BLKDBG_EVENT(extent->file, BLKDBG_COW_WRITE);
ret = bdrv_pwrite(extent->file, cluster_offset, whole_grain,
- skip_start_bytes);
+ skip_start_bytes, 0);
if (ret < 0) {
ret = VMDK_ERROR;
goto exit;
@@ -1470,7 +1464,7 @@ static int get_whole_cluster(BlockDriverState *bs,
BLKDBG_EVENT(extent->file, BLKDBG_COW_READ);
ret = bdrv_pread(bs->backing, offset + skip_end_bytes,
whole_grain + skip_end_bytes,
- cluster_bytes - skip_end_bytes);
+ cluster_bytes - skip_end_bytes, 0);
if (ret < 0) {
ret = VMDK_ERROR;
goto exit;
@@ -1479,7 +1473,7 @@ static int get_whole_cluster(BlockDriverState *bs,
BLKDBG_EVENT(extent->file, BLKDBG_COW_WRITE);
ret = bdrv_pwrite(extent->file, cluster_offset + skip_end_bytes,
whole_grain + skip_end_bytes,
- cluster_bytes - skip_end_bytes);
+ cluster_bytes - skip_end_bytes, 0);
if (ret < 0) {
ret = VMDK_ERROR;
goto exit;
@@ -1501,7 +1495,7 @@ static int vmdk_L2update(VmdkExtent *extent, VmdkMetaData *m_data,
if (bdrv_pwrite(extent->file,
((int64_t)m_data->l2_offset * 512)
+ (m_data->l2_index * sizeof(offset)),
- &offset, sizeof(offset)) < 0) {
+ &offset, sizeof(offset), 0) < 0) {
return VMDK_ERROR;
}
/* update backup L2 table */
@@ -1510,7 +1504,7 @@ static int vmdk_L2update(VmdkExtent *extent, VmdkMetaData *m_data,
if (bdrv_pwrite(extent->file,
((int64_t)m_data->l2_offset * 512)
+ (m_data->l2_index * sizeof(offset)),
- &offset, sizeof(offset)) < 0) {
+ &offset, sizeof(offset), 0) < 0) {
return VMDK_ERROR;
}
}
@@ -1634,7 +1628,8 @@ static int get_cluster_offset(BlockDriverState *bs,
if (bdrv_pread(extent->file,
(int64_t)l2_offset * 512,
l2_table,
- l2_size_bytes
+ l2_size_bytes,
+ 0
) != l2_size_bytes) {
return VMDK_ERROR;
}
@@ -1903,9 +1898,7 @@ static int vmdk_read_extent(VmdkExtent *extent, int64_t cluster_offset,
cluster_buf = g_malloc(buf_bytes);
uncomp_buf = g_malloc(cluster_bytes);
BLKDBG_EVENT(extent->file, BLKDBG_READ_COMPRESSED);
- ret = bdrv_pread(extent->file,
- cluster_offset,
- cluster_buf, buf_bytes);
+ ret = bdrv_pread(extent->file, cluster_offset, cluster_buf, buf_bytes, 0);
if (ret < 0) {
goto out;
}
diff --git a/block/vpc.c b/block/vpc.c
index 4d8f16e199..1ccdfb0557 100644
--- a/block/vpc.c
+++ b/block/vpc.c
@@ -252,7 +252,7 @@ static int vpc_open(BlockDriverState *bs, QDict *options, int flags,
goto fail;
}
- ret = bdrv_pread(bs->file, 0, &s->footer, sizeof(s->footer));
+ ret = bdrv_pread(bs->file, 0, &s->footer, sizeof(s->footer), 0);
if (ret < 0) {
error_setg(errp, "Unable to read VHD header");
goto fail;
@@ -272,8 +272,8 @@ static int vpc_open(BlockDriverState *bs, QDict *options, int flags,
}
/* If a fixed disk, the footer is found only at the end of the file */
- ret = bdrv_pread(bs->file, offset - sizeof(*footer),
- footer, sizeof(*footer));
+ ret = bdrv_pread(bs->file, offset - sizeof(*footer), footer,
+ sizeof(*footer), 0);
if (ret < 0) {
goto fail;
}
@@ -347,7 +347,7 @@ static int vpc_open(BlockDriverState *bs, QDict *options, int flags,
if (disk_type == VHD_DYNAMIC) {
ret = bdrv_pread(bs->file, be64_to_cpu(footer->data_offset),
- &dyndisk_header, sizeof(dyndisk_header));
+ &dyndisk_header, sizeof(dyndisk_header), 0);
if (ret < 0) {
error_setg(errp, "Error reading dynamic VHD header");
goto fail;
@@ -402,7 +402,7 @@ static int vpc_open(BlockDriverState *bs, QDict *options, int flags,
s->bat_offset = be64_to_cpu(dyndisk_header.table_offset);
ret = bdrv_pread(bs->file, s->bat_offset, s->pagetable,
- pagetable_size);
+ pagetable_size, 0);
if (ret < 0) {
error_setg(errp, "Error reading pagetable");
goto fail;
@@ -516,7 +516,8 @@ static inline int64_t get_image_offset(BlockDriverState *bs, uint64_t offset,
s->last_bitmap_offset = bitmap_offset;
memset(bitmap, 0xff, s->bitmap_size);
- r = bdrv_pwrite_sync(bs->file, bitmap_offset, bitmap, s->bitmap_size);
+ r = bdrv_pwrite_sync(bs->file, bitmap_offset, bitmap, s->bitmap_size,
+ 0);
if (r < 0) {
*err = r;
return -2;
@@ -538,7 +539,7 @@ static int rewrite_footer(BlockDriverState *bs)
BDRVVPCState *s = bs->opaque;
int64_t offset = s->free_data_block_offset;
- ret = bdrv_pwrite_sync(bs->file, offset, &s->footer, sizeof(s->footer));
+ ret = bdrv_pwrite_sync(bs->file, offset, &s->footer, sizeof(s->footer), 0);
if (ret < 0)
return ret;
@@ -573,7 +574,7 @@ static int64_t alloc_block(BlockDriverState *bs, int64_t offset)
/* Initialize the block's bitmap */
memset(bitmap, 0xff, s->bitmap_size);
ret = bdrv_pwrite_sync(bs->file, s->free_data_block_offset, bitmap,
- s->bitmap_size);
+ s->bitmap_size, 0);
if (ret < 0) {
return ret;
}
@@ -587,7 +588,7 @@ static int64_t alloc_block(BlockDriverState *bs, int64_t offset)
/* Write BAT entry to disk */
bat_offset = s->bat_offset + (4 * index);
bat_value = cpu_to_be32(s->pagetable[index]);
- ret = bdrv_pwrite_sync(bs->file, bat_offset, &bat_value, 4);
+ ret = bdrv_pwrite_sync(bs->file, bat_offset, &bat_value, 4, 0);
if (ret < 0)
goto fail;
diff --git a/block/vvfat.c b/block/vvfat.c
index b2b58d93b8..87595dfc69 100644
--- a/block/vvfat.c
+++ b/block/vvfat.c
@@ -1489,7 +1489,7 @@ static int vvfat_read(BlockDriverState *bs, int64_t sector_num,
" allocated\n", sector_num,
n >> BDRV_SECTOR_BITS));
if (bdrv_pread(s->qcow, sector_num * BDRV_SECTOR_SIZE,
- buf + i * 0x200, n) < 0) {
+ buf + i * 0x200, n, 0) < 0) {
return -1;
}
i += (n >> BDRV_SECTOR_BITS) - 1;
@@ -1978,7 +1978,8 @@ static uint32_t get_cluster_count_for_direntry(BDRVVVFATState* s,
return -1;
}
res = bdrv_pwrite(s->qcow, offset * BDRV_SECTOR_SIZE,
- s->cluster_buffer, BDRV_SECTOR_SIZE);
+ s->cluster_buffer, BDRV_SECTOR_SIZE,
+ 0);
if (res < 0) {
return -2;
}
@@ -3063,7 +3064,7 @@ DLOG(checkpoint());
*/
DLOG(fprintf(stderr, "Write to qcow backend: %d + %d\n", (int)sector_num, nb_sectors));
ret = bdrv_pwrite(s->qcow, sector_num * BDRV_SECTOR_SIZE, buf,
- nb_sectors * BDRV_SECTOR_SIZE);
+ nb_sectors * BDRV_SECTOR_SIZE, 0);
if (ret < 0) {
fprintf(stderr, "Error writing to qcow backend\n");
return ret;
diff --git a/include/block/block-io.h b/include/block/block-io.h
index 62c84f0519..900ab19545 100644
--- a/include/block/block-io.h
+++ b/include/block/block-io.h
@@ -42,11 +42,12 @@
int bdrv_pwrite_zeroes(BdrvChild *child, int64_t offset,
int64_t bytes, BdrvRequestFlags flags);
int bdrv_make_zero(BdrvChild *child, BdrvRequestFlags flags);
-int bdrv_pread(BdrvChild *child, int64_t offset, void *buf, int64_t bytes);
+int bdrv_pread(BdrvChild *child, int64_t offset, void *buf, int64_t bytes,
+ BdrvRequestFlags flags);
int bdrv_pwrite(BdrvChild *child, int64_t offset, const void *buf,
- int64_t bytes);
+ int64_t bytes, BdrvRequestFlags flags);
int bdrv_pwrite_sync(BdrvChild *child, int64_t offset,
- const void *buf, int64_t bytes);
+ const void *buf, int64_t bytes, BdrvRequestFlags flags);
/*
* Efficiently zero a region of the disk image. Note that this is a regular
* I/O request like read or write and should have a reasonable size. This
diff --git a/tests/unit/test-block-iothread.c b/tests/unit/test-block-iothread.c
index 94718c9319..4db1ad5dfe 100644
--- a/tests/unit/test-block-iothread.c
+++ b/tests/unit/test-block-iothread.c
@@ -88,11 +88,11 @@ static void test_sync_op_pread(BdrvChild *c)
int ret;
/* Success */
- ret = bdrv_pread(c, 0, buf, sizeof(buf));
+ ret = bdrv_pread(c, 0, buf, sizeof(buf), 0);
g_assert_cmpint(ret, ==, 512);
/* Early error: Negative offset */
- ret = bdrv_pread(c, -2, buf, sizeof(buf));
+ ret = bdrv_pread(c, -2, buf, sizeof(buf), 0);
g_assert_cmpint(ret, ==, -EIO);
}
@@ -102,11 +102,11 @@ static void test_sync_op_pwrite(BdrvChild *c)
int ret;
/* Success */
- ret = bdrv_pwrite(c, 0, buf, sizeof(buf));
+ ret = bdrv_pwrite(c, 0, buf, sizeof(buf), 0);
g_assert_cmpint(ret, ==, 512);
/* Early error: Negative offset */
- ret = bdrv_pwrite(c, -2, buf, sizeof(buf));
+ ret = bdrv_pwrite(c, -2, buf, sizeof(buf), 0);
g_assert_cmpint(ret, ==, -EIO);
}
--
2.35.3
^ permalink raw reply related [flat|nested] 18+ messages in thread
* [PATCH v2 02/10] block: Change bdrv_{pread, pwrite, pwrite_sync}() param order
2022-05-13 15:54 [PATCH v2 00/10] Implement bdrv_{pread, pwrite, pwrite_sync, pwrite_zeroes}() using generated_co_wrapper Alberto Faria
2022-05-13 15:54 ` [PATCH v2 01/10] block: Add a 'flags' param to bdrv_{pread, pwrite, pwrite_sync}() Alberto Faria
@ 2022-05-13 15:54 ` Alberto Faria
2022-05-13 15:57 ` [PATCH v2 03/10] block: Make bdrv_{pread, pwrite}() return 0 on success Alberto Faria
` (7 subsequent siblings)
9 siblings, 0 replies; 18+ messages in thread
From: Alberto Faria @ 2022-05-13 15:54 UTC (permalink / raw)
To: qemu-devel
Cc: qemu-block, Alberto Faria, Paolo Bonzini, Ari Sundholm,
Kevin Wolf, Hanna Reitz, Stefan Hajnoczi, Fam Zheng,
Denis V. Lunev, Vladimir Sementsov-Ogievskiy, Eric Blake,
John Snow, Stefan Weil, Jeff Cody
Swap 'buf' and 'bytes' around for consistency with
bdrv_co_{pread,pwrite}(), and in preparation to implement these
functions using generated_co_wrapper.
Callers were updated using this Coccinelle script:
@@ expression child, offset, buf, bytes, flags; @@
- bdrv_pread(child, offset, buf, bytes, flags)
+ bdrv_pread(child, offset, bytes, buf, flags)
@@ expression child, offset, buf, bytes, flags; @@
- bdrv_pwrite(child, offset, buf, bytes, flags)
+ bdrv_pwrite(child, offset, bytes, buf, flags)
@@ expression child, offset, buf, bytes, flags; @@
- bdrv_pwrite_sync(child, offset, buf, bytes, flags)
+ bdrv_pwrite_sync(child, offset, bytes, buf, flags)
Resulting overly-long lines were then fixed by hand.
Signed-off-by: Alberto Faria <afaria@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
---
block/blklogwrites.c | 6 ++--
block/bochs.c | 10 +++---
block/cloop.c | 10 +++---
block/crypto.c | 4 +--
block/dmg.c | 26 +++++++--------
block/io.c | 12 +++----
block/parallels-ext.c | 6 ++--
block/parallels.c | 10 +++---
block/qcow.c | 34 +++++++++----------
block/qcow2-bitmap.c | 14 ++++----
block/qcow2-cache.c | 8 ++---
block/qcow2-cluster.c | 22 ++++++-------
block/qcow2-refcount.c | 56 +++++++++++++++++---------------
block/qcow2-snapshot.c | 48 +++++++++++++--------------
block/qcow2.c | 47 ++++++++++++++-------------
block/qed.c | 8 ++---
block/vdi.c | 14 ++++----
block/vhdx-log.c | 18 +++++-----
block/vhdx.c | 28 ++++++++--------
block/vmdk.c | 50 ++++++++++++++--------------
block/vpc.c | 22 ++++++-------
block/vvfat.c | 10 +++---
include/block/block-io.h | 10 +++---
tests/unit/test-block-iothread.c | 8 ++---
24 files changed, 242 insertions(+), 239 deletions(-)
diff --git a/block/blklogwrites.c b/block/blklogwrites.c
index c5c021e6f8..e3c6c4039c 100644
--- a/block/blklogwrites.c
+++ b/block/blklogwrites.c
@@ -107,8 +107,8 @@ static uint64_t blk_log_writes_find_cur_log_sector(BdrvChild *log,
struct log_write_entry cur_entry;
while (cur_idx < nr_entries) {
- int read_ret = bdrv_pread(log, cur_sector << sector_bits, &cur_entry,
- sizeof(cur_entry), 0);
+ int read_ret = bdrv_pread(log, cur_sector << sector_bits,
+ sizeof(cur_entry), &cur_entry, 0);
if (read_ret < 0) {
error_setg_errno(errp, -read_ret,
"Failed to read log entry %"PRIu64, cur_idx);
@@ -190,7 +190,7 @@ static int blk_log_writes_open(BlockDriverState *bs, QDict *options, int flags,
log_sb.nr_entries = cpu_to_le64(0);
log_sb.sectorsize = cpu_to_le32(BDRV_SECTOR_SIZE);
} else {
- ret = bdrv_pread(s->log_file, 0, &log_sb, sizeof(log_sb), 0);
+ ret = bdrv_pread(s->log_file, 0, sizeof(log_sb), &log_sb, 0);
if (ret < 0) {
error_setg_errno(errp, -ret, "Could not read log superblock");
goto fail_log;
diff --git a/block/bochs.c b/block/bochs.c
index 46d0f6a693..b76f34fe03 100644
--- a/block/bochs.c
+++ b/block/bochs.c
@@ -116,7 +116,7 @@ static int bochs_open(BlockDriverState *bs, QDict *options, int flags,
return -EINVAL;
}
- ret = bdrv_pread(bs->file, 0, &bochs, sizeof(bochs), 0);
+ ret = bdrv_pread(bs->file, 0, sizeof(bochs), &bochs, 0);
if (ret < 0) {
return ret;
}
@@ -150,8 +150,8 @@ static int bochs_open(BlockDriverState *bs, QDict *options, int flags,
return -ENOMEM;
}
- ret = bdrv_pread(bs->file, le32_to_cpu(bochs.header), s->catalog_bitmap,
- s->catalog_size * 4, 0);
+ ret = bdrv_pread(bs->file, le32_to_cpu(bochs.header), s->catalog_size * 4,
+ s->catalog_bitmap, 0);
if (ret < 0) {
goto fail;
}
@@ -224,8 +224,8 @@ static int64_t seek_to_sector(BlockDriverState *bs, int64_t sector_num)
(s->extent_blocks + s->bitmap_blocks));
/* read in bitmap for current extent */
- ret = bdrv_pread(bs->file, bitmap_offset + (extent_offset / 8),
- &bitmap_entry, 1, 0);
+ ret = bdrv_pread(bs->file, bitmap_offset + (extent_offset / 8), 1,
+ &bitmap_entry, 0);
if (ret < 0) {
return ret;
}
diff --git a/block/cloop.c b/block/cloop.c
index 208a58ebb1..9a2334495e 100644
--- a/block/cloop.c
+++ b/block/cloop.c
@@ -78,7 +78,7 @@ static int cloop_open(BlockDriverState *bs, QDict *options, int flags,
}
/* read header */
- ret = bdrv_pread(bs->file, 128, &s->block_size, 4, 0);
+ ret = bdrv_pread(bs->file, 128, 4, &s->block_size, 0);
if (ret < 0) {
return ret;
}
@@ -104,7 +104,7 @@ static int cloop_open(BlockDriverState *bs, QDict *options, int flags,
return -EINVAL;
}
- ret = bdrv_pread(bs->file, 128 + 4, &s->n_blocks, 4, 0);
+ ret = bdrv_pread(bs->file, 128 + 4, 4, &s->n_blocks, 0);
if (ret < 0) {
return ret;
}
@@ -135,7 +135,7 @@ static int cloop_open(BlockDriverState *bs, QDict *options, int flags,
return -ENOMEM;
}
- ret = bdrv_pread(bs->file, 128 + 4 + 4, s->offsets, offsets_size, 0);
+ ret = bdrv_pread(bs->file, 128 + 4 + 4, offsets_size, s->offsets, 0);
if (ret < 0) {
goto fail;
}
@@ -220,8 +220,8 @@ static inline int cloop_read_block(BlockDriverState *bs, int block_num)
int ret;
uint32_t bytes = s->offsets[block_num + 1] - s->offsets[block_num];
- ret = bdrv_pread(bs->file, s->offsets[block_num], s->compressed_block,
- bytes, 0);
+ ret = bdrv_pread(bs->file, s->offsets[block_num], bytes,
+ s->compressed_block, 0);
if (ret != bytes) {
return -1;
}
diff --git a/block/crypto.c b/block/crypto.c
index d0c22e9549..deec7fae2f 100644
--- a/block/crypto.c
+++ b/block/crypto.c
@@ -65,7 +65,7 @@ static ssize_t block_crypto_read_func(QCryptoBlock *block,
BlockDriverState *bs = opaque;
ssize_t ret;
- ret = bdrv_pread(bs->file, offset, buf, buflen, 0);
+ ret = bdrv_pread(bs->file, offset, buflen, buf, 0);
if (ret < 0) {
error_setg_errno(errp, -ret, "Could not read encryption header");
return ret;
@@ -83,7 +83,7 @@ static ssize_t block_crypto_write_func(QCryptoBlock *block,
BlockDriverState *bs = opaque;
ssize_t ret;
- ret = bdrv_pwrite(bs->file, offset, buf, buflen, 0);
+ ret = bdrv_pwrite(bs->file, offset, buflen, buf, 0);
if (ret < 0) {
error_setg_errno(errp, -ret, "Could not write encryption header");
return ret;
diff --git a/block/dmg.c b/block/dmg.c
index ddd1d23005..5a460c3eb1 100644
--- a/block/dmg.c
+++ b/block/dmg.c
@@ -77,7 +77,7 @@ static int read_uint64(BlockDriverState *bs, int64_t offset, uint64_t *result)
uint64_t buffer;
int ret;
- ret = bdrv_pread(bs->file, offset, &buffer, 8, 0);
+ ret = bdrv_pread(bs->file, offset, 8, &buffer, 0);
if (ret < 0) {
return ret;
}
@@ -91,7 +91,7 @@ static int read_uint32(BlockDriverState *bs, int64_t offset, uint32_t *result)
uint32_t buffer;
int ret;
- ret = bdrv_pread(bs->file, offset, &buffer, 4, 0);
+ ret = bdrv_pread(bs->file, offset, 4, &buffer, 0);
if (ret < 0) {
return ret;
}
@@ -172,7 +172,7 @@ static int64_t dmg_find_koly_offset(BdrvChild *file, Error **errp)
offset = length - 511 - 512;
}
length = length < 515 ? length : 515;
- ret = bdrv_pread(file, offset, buffer, length, 0);
+ ret = bdrv_pread(file, offset, length, buffer, 0);
if (ret < 0) {
error_setg_errno(errp, -ret, "Failed while reading UDIF trailer");
return ret;
@@ -352,7 +352,7 @@ static int dmg_read_resource_fork(BlockDriverState *bs, DmgHeaderState *ds,
offset += 4;
buffer = g_realloc(buffer, count);
- ret = bdrv_pread(bs->file, offset, buffer, count, 0);
+ ret = bdrv_pread(bs->file, offset, count, buffer, 0);
if (ret < 0) {
goto fail;
}
@@ -389,7 +389,7 @@ static int dmg_read_plist_xml(BlockDriverState *bs, DmgHeaderState *ds,
buffer = g_malloc(info_length + 1);
buffer[info_length] = '\0';
- ret = bdrv_pread(bs->file, info_begin, buffer, info_length, 0);
+ ret = bdrv_pread(bs->file, info_begin, info_length, buffer, 0);
if (ret != info_length) {
ret = -EINVAL;
goto fail;
@@ -609,8 +609,8 @@ static inline int dmg_read_chunk(BlockDriverState *bs, uint64_t sector_num)
case UDZO: { /* zlib compressed */
/* we need to buffer, because only the chunk as whole can be
* inflated. */
- ret = bdrv_pread(bs->file, s->offsets[chunk], s->compressed_chunk,
- s->lengths[chunk], 0);
+ ret = bdrv_pread(bs->file, s->offsets[chunk], s->lengths[chunk],
+ s->compressed_chunk, 0);
if (ret != s->lengths[chunk]) {
return -1;
}
@@ -635,8 +635,8 @@ static inline int dmg_read_chunk(BlockDriverState *bs, uint64_t sector_num)
}
/* we need to buffer, because only the chunk as whole can be
* inflated. */
- ret = bdrv_pread(bs->file, s->offsets[chunk], s->compressed_chunk,
- s->lengths[chunk], 0);
+ ret = bdrv_pread(bs->file, s->offsets[chunk], s->lengths[chunk],
+ s->compressed_chunk, 0);
if (ret != s->lengths[chunk]) {
return -1;
}
@@ -656,8 +656,8 @@ static inline int dmg_read_chunk(BlockDriverState *bs, uint64_t sector_num)
}
/* we need to buffer, because only the chunk as whole can be
* inflated. */
- ret = bdrv_pread(bs->file, s->offsets[chunk], s->compressed_chunk,
- s->lengths[chunk], 0);
+ ret = bdrv_pread(bs->file, s->offsets[chunk], s->lengths[chunk],
+ s->compressed_chunk, 0);
if (ret != s->lengths[chunk]) {
return -1;
}
@@ -672,8 +672,8 @@ static inline int dmg_read_chunk(BlockDriverState *bs, uint64_t sector_num)
}
break;
case UDRW: /* copy */
- ret = bdrv_pread(bs->file, s->offsets[chunk],
- s->uncompressed_chunk, s->lengths[chunk], 0);
+ ret = bdrv_pread(bs->file, s->offsets[chunk], s->lengths[chunk],
+ s->uncompressed_chunk, 0);
if (ret != s->lengths[chunk]) {
return -1;
}
diff --git a/block/io.c b/block/io.c
index 008e5c90bf..2ed963d9e0 100644
--- a/block/io.c
+++ b/block/io.c
@@ -1112,7 +1112,7 @@ int bdrv_make_zero(BdrvChild *child, BdrvRequestFlags flags)
}
/* See bdrv_pwrite() for the return codes */
-int bdrv_pread(BdrvChild *child, int64_t offset, void *buf, int64_t bytes,
+int bdrv_pread(BdrvChild *child, int64_t offset, int64_t bytes, void *buf,
BdrvRequestFlags flags)
{
int ret;
@@ -1134,8 +1134,8 @@ int bdrv_pread(BdrvChild *child, int64_t offset, void *buf, int64_t bytes,
-EINVAL Invalid offset or number of bytes
-EACCES Trying to write a read-only device
*/
-int bdrv_pwrite(BdrvChild *child, int64_t offset, const void *buf,
- int64_t bytes, BdrvRequestFlags flags)
+int bdrv_pwrite(BdrvChild *child, int64_t offset, int64_t bytes,
+ const void *buf, BdrvRequestFlags flags)
{
int ret;
QEMUIOVector qiov = QEMU_IOVEC_INIT_BUF(qiov, buf, bytes);
@@ -1156,13 +1156,13 @@ int bdrv_pwrite(BdrvChild *child, int64_t offset, const void *buf,
*
* Returns 0 on success, -errno in error cases.
*/
-int bdrv_pwrite_sync(BdrvChild *child, int64_t offset,
- const void *buf, int64_t count, BdrvRequestFlags flags)
+int bdrv_pwrite_sync(BdrvChild *child, int64_t offset, int64_t bytes,
+ const void *buf, BdrvRequestFlags flags)
{
int ret;
IO_CODE();
- ret = bdrv_pwrite(child, offset, buf, count, flags);
+ ret = bdrv_pwrite(child, offset, bytes, buf, flags);
if (ret < 0) {
return ret;
}
diff --git a/block/parallels-ext.c b/block/parallels-ext.c
index f737104d12..c9dbbf5089 100644
--- a/block/parallels-ext.c
+++ b/block/parallels-ext.c
@@ -93,8 +93,8 @@ static int parallels_load_bitmap_data(BlockDriverState *bs,
if (entry == 1) {
bdrv_dirty_bitmap_deserialize_ones(bitmap, offset, count, false);
} else {
- ret = bdrv_pread(bs->file, entry << BDRV_SECTOR_BITS, buf,
- s->cluster_size, 0);
+ ret = bdrv_pread(bs->file, entry << BDRV_SECTOR_BITS,
+ s->cluster_size, buf, 0);
if (ret < 0) {
error_setg_errno(errp, -ret,
"Failed to read bitmap data cluster");
@@ -286,7 +286,7 @@ int parallels_read_format_extension(BlockDriverState *bs,
assert(ext_off > 0);
- ret = bdrv_pread(bs->file, ext_off, ext_cluster, s->cluster_size, 0);
+ ret = bdrv_pread(bs->file, ext_off, s->cluster_size, ext_cluster, 0);
if (ret < 0) {
error_setg_errno(errp, -ret, "Failed to read Format Extension cluster");
goto out;
diff --git a/block/parallels.c b/block/parallels.c
index 6ab82764b2..f22444efff 100644
--- a/block/parallels.c
+++ b/block/parallels.c
@@ -277,7 +277,7 @@ static coroutine_fn int parallels_co_flush_to_os(BlockDriverState *bs)
if (off + to_write > s->header_size) {
to_write = s->header_size - off;
}
- ret = bdrv_pwrite(bs->file, off, (uint8_t *)s->header + off, to_write,
+ ret = bdrv_pwrite(bs->file, off, to_write, (uint8_t *)s->header + off,
0);
if (ret < 0) {
qemu_co_mutex_unlock(&s->lock);
@@ -481,7 +481,7 @@ static int coroutine_fn parallels_co_check(BlockDriverState *bs,
ret = 0;
if (flush_bat) {
- ret = bdrv_pwrite_sync(bs->file, 0, s->header, s->header_size, 0);
+ ret = bdrv_pwrite_sync(bs->file, 0, s->header_size, s->header, 0);
if (ret < 0) {
res->check_errors++;
goto out;
@@ -723,7 +723,7 @@ static int parallels_update_header(BlockDriverState *bs)
if (size > s->header_size) {
size = s->header_size;
}
- return bdrv_pwrite_sync(bs->file, 0, s->header, size, 0);
+ return bdrv_pwrite_sync(bs->file, 0, size, s->header, 0);
}
static int parallels_open(BlockDriverState *bs, QDict *options, int flags,
@@ -742,7 +742,7 @@ static int parallels_open(BlockDriverState *bs, QDict *options, int flags,
return -EINVAL;
}
- ret = bdrv_pread(bs->file, 0, &ph, sizeof(ph), 0);
+ ret = bdrv_pread(bs->file, 0, sizeof(ph), &ph, 0);
if (ret < 0) {
goto fail;
}
@@ -798,7 +798,7 @@ static int parallels_open(BlockDriverState *bs, QDict *options, int flags,
s->header_size = size;
}
- ret = bdrv_pread(bs->file, 0, s->header, s->header_size, 0);
+ ret = bdrv_pread(bs->file, 0, s->header_size, s->header, 0);
if (ret < 0) {
goto fail;
}
diff --git a/block/qcow.c b/block/qcow.c
index 20fb94c18b..c94524b814 100644
--- a/block/qcow.c
+++ b/block/qcow.c
@@ -128,7 +128,7 @@ static int qcow_open(BlockDriverState *bs, QDict *options, int flags,
goto fail;
}
- ret = bdrv_pread(bs->file, 0, &header, sizeof(header), 0);
+ ret = bdrv_pread(bs->file, 0, sizeof(header), &header, 0);
if (ret < 0) {
goto fail;
}
@@ -260,8 +260,8 @@ static int qcow_open(BlockDriverState *bs, QDict *options, int flags,
goto fail;
}
- ret = bdrv_pread(bs->file, s->l1_table_offset, s->l1_table,
- s->l1_size * sizeof(uint64_t), 0);
+ ret = bdrv_pread(bs->file, s->l1_table_offset,
+ s->l1_size * sizeof(uint64_t), s->l1_table, 0);
if (ret < 0) {
goto fail;
}
@@ -291,8 +291,8 @@ static int qcow_open(BlockDriverState *bs, QDict *options, int flags,
ret = -EINVAL;
goto fail;
}
- ret = bdrv_pread(bs->file, header.backing_file_offset,
- bs->auto_backing_file, len, 0);
+ ret = bdrv_pread(bs->file, header.backing_file_offset, len,
+ bs->auto_backing_file, 0);
if (ret < 0) {
goto fail;
}
@@ -383,7 +383,7 @@ static int get_cluster_offset(BlockDriverState *bs,
BLKDBG_EVENT(bs->file, BLKDBG_L1_UPDATE);
ret = bdrv_pwrite_sync(bs->file,
s->l1_table_offset + l1_index * sizeof(tmp),
- &tmp, sizeof(tmp), 0);
+ sizeof(tmp), &tmp, 0);
if (ret < 0) {
return ret;
}
@@ -414,14 +414,14 @@ static int get_cluster_offset(BlockDriverState *bs,
BLKDBG_EVENT(bs->file, BLKDBG_L2_LOAD);
if (new_l2_table) {
memset(l2_table, 0, s->l2_size * sizeof(uint64_t));
- ret = bdrv_pwrite_sync(bs->file, l2_offset, l2_table,
- s->l2_size * sizeof(uint64_t), 0);
+ ret = bdrv_pwrite_sync(bs->file, l2_offset,
+ s->l2_size * sizeof(uint64_t), l2_table, 0);
if (ret < 0) {
return ret;
}
} else {
- ret = bdrv_pread(bs->file, l2_offset, l2_table,
- s->l2_size * sizeof(uint64_t), 0);
+ ret = bdrv_pread(bs->file, l2_offset, s->l2_size * sizeof(uint64_t),
+ l2_table, 0);
if (ret < 0) {
return ret;
}
@@ -453,8 +453,8 @@ static int get_cluster_offset(BlockDriverState *bs,
cluster_offset = QEMU_ALIGN_UP(cluster_offset, s->cluster_size);
/* write the cluster content */
BLKDBG_EVENT(bs->file, BLKDBG_WRITE_AIO);
- ret = bdrv_pwrite(bs->file, cluster_offset, s->cluster_cache,
- s->cluster_size, 0);
+ ret = bdrv_pwrite(bs->file, cluster_offset, s->cluster_size,
+ s->cluster_cache, 0);
if (ret < 0) {
return ret;
}
@@ -493,8 +493,8 @@ static int get_cluster_offset(BlockDriverState *bs,
}
BLKDBG_EVENT(bs->file, BLKDBG_WRITE_AIO);
ret = bdrv_pwrite(bs->file, cluster_offset + i,
- s->cluster_data,
- BDRV_SECTOR_SIZE, 0);
+ BDRV_SECTOR_SIZE,
+ s->cluster_data, 0);
if (ret < 0) {
return ret;
}
@@ -515,7 +515,7 @@ static int get_cluster_offset(BlockDriverState *bs,
BLKDBG_EVENT(bs->file, BLKDBG_L2_UPDATE);
}
ret = bdrv_pwrite_sync(bs->file, l2_offset + l2_index * sizeof(tmp),
- &tmp, sizeof(tmp), 0);
+ sizeof(tmp), &tmp, 0);
if (ret < 0) {
return ret;
}
@@ -596,7 +596,7 @@ static int decompress_cluster(BlockDriverState *bs, uint64_t cluster_offset)
csize = cluster_offset >> (63 - s->cluster_bits);
csize &= (s->cluster_size - 1);
BLKDBG_EVENT(bs->file, BLKDBG_READ_COMPRESSED);
- ret = bdrv_pread(bs->file, coffset, s->cluster_data, csize, 0);
+ ret = bdrv_pread(bs->file, coffset, csize, s->cluster_data, 0);
if (ret != csize)
return -1;
if (decompress_buffer(s->cluster_cache, s->cluster_size,
@@ -1029,7 +1029,7 @@ static int qcow_make_empty(BlockDriverState *bs)
int ret;
memset(s->l1_table, 0, l1_length);
- if (bdrv_pwrite_sync(bs->file, s->l1_table_offset, s->l1_table, l1_length,
+ if (bdrv_pwrite_sync(bs->file, s->l1_table_offset, l1_length, s->l1_table,
0) < 0)
return -1;
ret = bdrv_truncate(bs->file, s->l1_table_offset + l1_length, false,
diff --git a/block/qcow2-bitmap.c b/block/qcow2-bitmap.c
index 6aa4739820..e98bafe0f4 100644
--- a/block/qcow2-bitmap.c
+++ b/block/qcow2-bitmap.c
@@ -234,8 +234,8 @@ static int bitmap_table_load(BlockDriverState *bs, Qcow2BitmapTable *tb,
}
assert(tb->size <= BME_MAX_TABLE_SIZE);
- ret = bdrv_pread(bs->file, tb->offset, table,
- tb->size * BME_TABLE_ENTRY_SIZE, 0);
+ ret = bdrv_pread(bs->file, tb->offset, tb->size * BME_TABLE_ENTRY_SIZE,
+ table, 0);
if (ret < 0) {
goto fail;
}
@@ -317,7 +317,7 @@ static int load_bitmap_data(BlockDriverState *bs,
* already cleared */
}
} else {
- ret = bdrv_pread(bs->file, data_offset, buf, s->cluster_size, 0);
+ ret = bdrv_pread(bs->file, data_offset, s->cluster_size, buf, 0);
if (ret < 0) {
goto finish;
}
@@ -575,7 +575,7 @@ static Qcow2BitmapList *bitmap_list_load(BlockDriverState *bs, uint64_t offset,
}
dir_end = dir + size;
- ret = bdrv_pread(bs->file, offset, dir, size, 0);
+ ret = bdrv_pread(bs->file, offset, size, dir, 0);
if (ret < 0) {
error_setg_errno(errp, -ret, "Failed to read bitmap directory");
goto fail;
@@ -798,7 +798,7 @@ static int bitmap_list_store(BlockDriverState *bs, Qcow2BitmapList *bm_list,
goto fail;
}
- ret = bdrv_pwrite(bs->file, dir_offset, dir, dir_size, 0);
+ ret = bdrv_pwrite(bs->file, dir_offset, dir_size, dir, 0);
if (ret < 0) {
goto fail;
}
@@ -1339,7 +1339,7 @@ static uint64_t *store_bitmap_data(BlockDriverState *bs,
goto fail;
}
- ret = bdrv_pwrite(bs->file, off, buf, s->cluster_size, 0);
+ ret = bdrv_pwrite(bs->file, off, s->cluster_size, buf, 0);
if (ret < 0) {
error_setg_errno(errp, -ret, "Failed to write bitmap '%s' to file",
bm_name);
@@ -1402,7 +1402,7 @@ static int store_bitmap(BlockDriverState *bs, Qcow2Bitmap *bm, Error **errp)
}
bitmap_table_to_be(tb, tb_size);
- ret = bdrv_pwrite(bs->file, tb_offset, tb, tb_size * sizeof(tb[0]), 0);
+ ret = bdrv_pwrite(bs->file, tb_offset, tb_size * sizeof(tb[0]), tb, 0);
if (ret < 0) {
error_setg_errno(errp, -ret, "Failed to write bitmap '%s' to file",
bm_name);
diff --git a/block/qcow2-cache.c b/block/qcow2-cache.c
index e562e00c5c..54b2d5f4de 100644
--- a/block/qcow2-cache.c
+++ b/block/qcow2-cache.c
@@ -223,8 +223,8 @@ static int qcow2_cache_entry_flush(BlockDriverState *bs, Qcow2Cache *c, int i)
BLKDBG_EVENT(bs->file, BLKDBG_L2_UPDATE);
}
- ret = bdrv_pwrite(bs->file, c->entries[i].offset,
- qcow2_cache_get_table_addr(c, i), c->table_size, 0);
+ ret = bdrv_pwrite(bs->file, c->entries[i].offset, c->table_size,
+ qcow2_cache_get_table_addr(c, i), 0);
if (ret < 0) {
return ret;
}
@@ -379,8 +379,8 @@ static int qcow2_cache_do_get(BlockDriverState *bs, Qcow2Cache *c,
BLKDBG_EVENT(bs->file, BLKDBG_L2_LOAD);
}
- ret = bdrv_pread(bs->file, offset, qcow2_cache_get_table_addr(c, i),
- c->table_size, 0);
+ ret = bdrv_pread(bs->file, offset, c->table_size,
+ qcow2_cache_get_table_addr(c, i), 0);
if (ret < 0) {
return ret;
}
diff --git a/block/qcow2-cluster.c b/block/qcow2-cluster.c
index ad7107a795..fd32316d6f 100644
--- a/block/qcow2-cluster.c
+++ b/block/qcow2-cluster.c
@@ -159,8 +159,8 @@ int qcow2_grow_l1_table(BlockDriverState *bs, uint64_t min_size,
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_sync(bs->file, new_l1_table_offset, new_l1_table,
- new_l1_size2, 0);
+ ret = bdrv_pwrite_sync(bs->file, new_l1_table_offset, new_l1_size2,
+ new_l1_table, 0);
if (ret < 0)
goto fail;
for(i = 0; i < s->l1_size; i++)
@@ -170,8 +170,8 @@ int qcow2_grow_l1_table(BlockDriverState *bs, uint64_t min_size,
BLKDBG_EVENT(bs->file, BLKDBG_L1_GROW_ACTIVATE_TABLE);
stl_be_p(data, new_l1_size);
stq_be_p(data + 4, new_l1_table_offset);
- ret = bdrv_pwrite_sync(bs->file, offsetof(QCowHeader, l1_size), data,
- sizeof(data), 0);
+ ret = bdrv_pwrite_sync(bs->file, offsetof(QCowHeader, l1_size),
+ sizeof(data), data, 0);
if (ret < 0) {
goto fail;
}
@@ -249,7 +249,7 @@ int qcow2_write_l1_entry(BlockDriverState *bs, int l1_index)
BLKDBG_EVENT(bs->file, BLKDBG_L1_UPDATE);
ret = bdrv_pwrite_sync(bs->file,
s->l1_table_offset + L1E_SIZE * l1_start_index,
- buf, bufsize, 0);
+ bufsize, buf, 0);
if (ret < 0) {
return ret;
}
@@ -2260,8 +2260,8 @@ static int expand_zero_clusters_in_l1(BlockDriverState *bs, uint64_t *l1_table,
(void **)&l2_slice);
} else {
/* load inactive L2 tables from disk */
- ret = bdrv_pread(bs->file, slice_offset, l2_slice,
- slice_size2, 0);
+ ret = bdrv_pread(bs->file, slice_offset, slice_size2,
+ l2_slice, 0);
}
if (ret < 0) {
goto fail;
@@ -2377,8 +2377,8 @@ static int expand_zero_clusters_in_l1(BlockDriverState *bs, uint64_t *l1_table,
goto fail;
}
- ret = bdrv_pwrite(bs->file, slice_offset, l2_slice,
- slice_size2, 0);
+ ret = bdrv_pwrite(bs->file, slice_offset, slice_size2,
+ l2_slice, 0);
if (ret < 0) {
goto fail;
}
@@ -2471,8 +2471,8 @@ int qcow2_expand_zero_clusters(BlockDriverState *bs,
l1_table = new_l1_table;
- ret = bdrv_pread(bs->file, s->snapshots[i].l1_table_offset, l1_table,
- l1_size2, 0);
+ ret = bdrv_pread(bs->file, s->snapshots[i].l1_table_offset, l1_size2,
+ l1_table, 0);
if (ret < 0) {
goto fail;
}
diff --git a/block/qcow2-refcount.c b/block/qcow2-refcount.c
index 5aa2b61b6c..c4d99817b6 100644
--- a/block/qcow2-refcount.c
+++ b/block/qcow2-refcount.c
@@ -119,7 +119,7 @@ int qcow2_refcount_init(BlockDriverState *bs)
}
BLKDBG_EVENT(bs->file, BLKDBG_REFTABLE_LOAD);
ret = bdrv_pread(bs->file, s->refcount_table_offset,
- s->refcount_table, refcount_table_size2, 0);
+ refcount_table_size2, s->refcount_table, 0);
if (ret < 0) {
goto fail;
}
@@ -439,7 +439,7 @@ static int alloc_refcount_block(BlockDriverState *bs,
BLKDBG_EVENT(bs->file, BLKDBG_REFBLOCK_ALLOC_HOOKUP);
ret = bdrv_pwrite_sync(bs->file, s->refcount_table_offset +
refcount_table_index * REFTABLE_ENTRY_SIZE,
- &data64, sizeof(data64), 0);
+ sizeof(data64), &data64, 0);
if (ret < 0) {
goto fail;
}
@@ -684,8 +684,8 @@ int64_t qcow2_refcount_area(BlockDriverState *bs, uint64_t start_offset,
}
BLKDBG_EVENT(bs->file, BLKDBG_REFBLOCK_ALLOC_WRITE_TABLE);
- ret = bdrv_pwrite_sync(bs->file, table_offset, new_table,
- table_size * REFTABLE_ENTRY_SIZE, 0);
+ ret = bdrv_pwrite_sync(bs->file, table_offset,
+ table_size * REFTABLE_ENTRY_SIZE, new_table, 0);
if (ret < 0) {
goto fail;
}
@@ -703,8 +703,8 @@ int64_t qcow2_refcount_area(BlockDriverState *bs, uint64_t start_offset,
data.d32 = cpu_to_be32(table_clusters);
BLKDBG_EVENT(bs->file, BLKDBG_REFBLOCK_ALLOC_SWITCH_TABLE);
ret = bdrv_pwrite_sync(bs->file,
- offsetof(QCowHeader, refcount_table_offset), &data,
- sizeof(data), 0);
+ offsetof(QCowHeader, refcount_table_offset),
+ sizeof(data), &data, 0);
if (ret < 0) {
goto fail;
}
@@ -1274,7 +1274,7 @@ int qcow2_update_snapshot_refcount(BlockDriverState *bs,
}
l1_allocated = true;
- ret = bdrv_pread(bs->file, l1_table_offset, l1_table, l1_size2, 0);
+ ret = bdrv_pread(bs->file, l1_table_offset, l1_size2, l1_table, 0);
if (ret < 0) {
goto fail;
}
@@ -1435,7 +1435,7 @@ fail:
cpu_to_be64s(&l1_table[i]);
}
- ret = bdrv_pwrite_sync(bs->file, l1_table_offset, l1_table, l1_size2,
+ ret = bdrv_pwrite_sync(bs->file, l1_table_offset, l1_size2, l1_table,
0);
for (i = 0; i < l1_size; i++) {
@@ -1633,8 +1633,8 @@ static int fix_l2_entry_by_zero(BlockDriverState *bs, BdrvCheckResult *res,
goto fail;
}
- ret = bdrv_pwrite_sync(bs->file, l2e_offset, &l2_table[idx],
- l2_entry_size(s), 0);
+ ret = bdrv_pwrite_sync(bs->file, l2e_offset, l2_entry_size(s),
+ &l2_table[idx], 0);
if (ret < 0) {
fprintf(stderr, "ERROR: Failed to overwrite L2 "
"table entry: %s\n", strerror(-ret));
@@ -1672,7 +1672,7 @@ static int check_refcounts_l2(BlockDriverState *bs, BdrvCheckResult *res,
bool metadata_overlap;
/* Read L2 table from disk */
- ret = bdrv_pread(bs->file, l2_offset, l2_table, l2_size_bytes, 0);
+ ret = bdrv_pread(bs->file, l2_offset, l2_size_bytes, l2_table, 0);
if (ret < 0) {
fprintf(stderr, "ERROR: I/O error in check_refcounts_l2\n");
res->check_errors++;
@@ -1888,7 +1888,7 @@ static int check_refcounts_l1(BlockDriverState *bs,
}
/* Read L1 table entries from disk */
- ret = bdrv_pread(bs->file, l1_table_offset, l1_table, l1_size_bytes, 0);
+ ret = bdrv_pread(bs->file, l1_table_offset, l1_size_bytes, l1_table, 0);
if (ret < 0) {
fprintf(stderr, "ERROR: I/O error in check_refcounts_l1\n");
res->check_errors++;
@@ -2004,8 +2004,8 @@ static int check_oflag_copied(BlockDriverState *bs, BdrvCheckResult *res,
}
}
- ret = bdrv_pread(bs->file, l2_offset, l2_table,
- s->l2_size * l2_entry_size(s), 0);
+ ret = bdrv_pread(bs->file, l2_offset, s->l2_size * l2_entry_size(s),
+ l2_table, 0);
if (ret < 0) {
fprintf(stderr, "ERROR: Could not read L2 table: %s\n",
strerror(-ret));
@@ -2058,7 +2058,7 @@ static int check_oflag_copied(BlockDriverState *bs, BdrvCheckResult *res,
goto fail;
}
- ret = bdrv_pwrite(bs->file, l2_offset, l2_table, s->cluster_size,
+ ret = bdrv_pwrite(bs->file, l2_offset, s->cluster_size, l2_table,
0);
if (ret < 0) {
fprintf(stderr, "ERROR: Could not write L2 table: %s\n",
@@ -2577,8 +2577,8 @@ static int rebuild_refcounts_write_refblocks(
on_disk_refblock = (void *)((char *) *refcount_table +
refblock_index * s->cluster_size);
- ret = bdrv_pwrite(bs->file, refblock_offset, on_disk_refblock,
- s->cluster_size, 0);
+ ret = bdrv_pwrite(bs->file, refblock_offset, s->cluster_size,
+ on_disk_refblock, 0);
if (ret < 0) {
error_setg_errno(errp, -ret, "ERROR writing refblock");
return ret;
@@ -2733,8 +2733,8 @@ static int rebuild_refcount_structure(BlockDriverState *bs,
}
assert(reftable_length < INT_MAX);
- ret = bdrv_pwrite(bs->file, reftable_offset, on_disk_reftable,
- reftable_length, 0);
+ ret = bdrv_pwrite(bs->file, reftable_offset, reftable_length,
+ on_disk_reftable, 0);
if (ret < 0) {
error_setg_errno(errp, -ret, "ERROR writing reftable");
goto fail;
@@ -2746,8 +2746,8 @@ static int rebuild_refcount_structure(BlockDriverState *bs,
cpu_to_be32(reftable_clusters);
ret = bdrv_pwrite_sync(bs->file,
offsetof(QCowHeader, refcount_table_offset),
- &reftable_offset_and_clusters,
- sizeof(reftable_offset_and_clusters), 0);
+ sizeof(reftable_offset_and_clusters),
+ &reftable_offset_and_clusters, 0);
if (ret < 0) {
error_setg_errno(errp, -ret, "ERROR setting reftable");
goto fail;
@@ -3009,7 +3009,7 @@ int qcow2_check_metadata_overlap(BlockDriverState *bs, int ign, int64_t offset,
return -ENOMEM;
}
- ret = bdrv_pread(bs->file, l1_ofs, l1, l1_sz2, 0);
+ ret = bdrv_pread(bs->file, l1_ofs, l1_sz2, l1, 0);
if (ret < 0) {
g_free(l1);
return ret;
@@ -3180,7 +3180,7 @@ static int flush_refblock(BlockDriverState *bs, uint64_t **reftable,
return ret;
}
- ret = bdrv_pwrite(bs->file, offset, refblock, s->cluster_size, 0);
+ ret = bdrv_pwrite(bs->file, offset, s->cluster_size, refblock, 0);
if (ret < 0) {
error_setg_errno(errp, -ret, "Failed to write refblock");
return ret;
@@ -3452,8 +3452,9 @@ int qcow2_change_refcount_order(BlockDriverState *bs, int refcount_order,
cpu_to_be64s(&new_reftable[i]);
}
- ret = bdrv_pwrite(bs->file, new_reftable_offset, new_reftable,
- new_reftable_size * REFTABLE_ENTRY_SIZE, 0);
+ ret = bdrv_pwrite(bs->file, new_reftable_offset,
+ new_reftable_size * REFTABLE_ENTRY_SIZE, new_reftable,
+ 0);
for (i = 0; i < new_reftable_size; i++) {
be64_to_cpus(&new_reftable[i]);
@@ -3656,8 +3657,9 @@ int qcow2_shrink_reftable(BlockDriverState *bs)
reftable_tmp[i] = unused_block ? 0 : cpu_to_be64(s->refcount_table[i]);
}
- ret = bdrv_pwrite_sync(bs->file, s->refcount_table_offset, reftable_tmp,
- s->refcount_table_size * REFTABLE_ENTRY_SIZE, 0);
+ ret = bdrv_pwrite_sync(bs->file, s->refcount_table_offset,
+ s->refcount_table_size * REFTABLE_ENTRY_SIZE,
+ reftable_tmp, 0);
/*
* If the write in the reftable failed the image may contain a partially
* overwritten reftable. In this case it would be better to clear the
diff --git a/block/qcow2-snapshot.c b/block/qcow2-snapshot.c
index dc62b0197c..60e0461632 100644
--- a/block/qcow2-snapshot.c
+++ b/block/qcow2-snapshot.c
@@ -108,7 +108,7 @@ static int qcow2_do_read_snapshots(BlockDriverState *bs, bool repair,
/* Read statically sized part of the snapshot header */
offset = ROUND_UP(offset, 8);
- ret = bdrv_pread(bs->file, offset, &h, sizeof(h), 0);
+ ret = bdrv_pread(bs->file, offset, sizeof(h), &h, 0);
if (ret < 0) {
error_setg_errno(errp, -ret, "Failed to read snapshot table");
goto fail;
@@ -146,8 +146,8 @@ static int qcow2_do_read_snapshots(BlockDriverState *bs, bool repair,
}
/* Read known extra data */
- ret = bdrv_pread(bs->file, offset, &extra,
- MIN(sizeof(extra), sn->extra_data_size), 0);
+ ret = bdrv_pread(bs->file, offset,
+ MIN(sizeof(extra), sn->extra_data_size), &extra, 0);
if (ret < 0) {
error_setg_errno(errp, -ret, "Failed to read snapshot table");
goto fail;
@@ -184,8 +184,8 @@ static int qcow2_do_read_snapshots(BlockDriverState *bs, bool repair,
/* Store unknown extra data */
unknown_extra_data_size = sn->extra_data_size - sizeof(extra);
sn->unknown_extra_data = g_malloc(unknown_extra_data_size);
- ret = bdrv_pread(bs->file, offset, sn->unknown_extra_data,
- unknown_extra_data_size, 0);
+ ret = bdrv_pread(bs->file, offset, unknown_extra_data_size,
+ sn->unknown_extra_data, 0);
if (ret < 0) {
error_setg_errno(errp, -ret,
"Failed to read snapshot table");
@@ -196,7 +196,7 @@ static int qcow2_do_read_snapshots(BlockDriverState *bs, bool repair,
/* Read snapshot ID */
sn->id_str = g_malloc(id_str_size + 1);
- ret = bdrv_pread(bs->file, offset, sn->id_str, id_str_size, 0);
+ ret = bdrv_pread(bs->file, offset, id_str_size, sn->id_str, 0);
if (ret < 0) {
error_setg_errno(errp, -ret, "Failed to read snapshot table");
goto fail;
@@ -206,7 +206,7 @@ static int qcow2_do_read_snapshots(BlockDriverState *bs, bool repair,
/* Read snapshot name */
sn->name = g_malloc(name_size + 1);
- ret = bdrv_pread(bs->file, offset, sn->name, name_size, 0);
+ ret = bdrv_pread(bs->file, offset, name_size, sn->name, 0);
if (ret < 0) {
error_setg_errno(errp, -ret, "Failed to read snapshot table");
goto fail;
@@ -349,13 +349,13 @@ int qcow2_write_snapshots(BlockDriverState *bs)
h.name_size = cpu_to_be16(name_size);
offset = ROUND_UP(offset, 8);
- ret = bdrv_pwrite(bs->file, offset, &h, sizeof(h), 0);
+ ret = bdrv_pwrite(bs->file, offset, sizeof(h), &h, 0);
if (ret < 0) {
goto fail;
}
offset += sizeof(h);
- ret = bdrv_pwrite(bs->file, offset, &extra, sizeof(extra), 0);
+ ret = bdrv_pwrite(bs->file, offset, sizeof(extra), &extra, 0);
if (ret < 0) {
goto fail;
}
@@ -369,21 +369,21 @@ int qcow2_write_snapshots(BlockDriverState *bs)
assert(unknown_extra_data_size <= BDRV_REQUEST_MAX_BYTES);
assert(sn->unknown_extra_data);
- ret = bdrv_pwrite(bs->file, offset, sn->unknown_extra_data,
- unknown_extra_data_size, 0);
+ ret = bdrv_pwrite(bs->file, offset, unknown_extra_data_size,
+ sn->unknown_extra_data, 0);
if (ret < 0) {
goto fail;
}
offset += unknown_extra_data_size;
}
- ret = bdrv_pwrite(bs->file, offset, sn->id_str, id_str_size, 0);
+ ret = bdrv_pwrite(bs->file, offset, id_str_size, sn->id_str, 0);
if (ret < 0) {
goto fail;
}
offset += id_str_size;
- ret = bdrv_pwrite(bs->file, offset, sn->name, name_size, 0);
+ ret = bdrv_pwrite(bs->file, offset, name_size, sn->name, 0);
if (ret < 0) {
goto fail;
}
@@ -406,7 +406,7 @@ int qcow2_write_snapshots(BlockDriverState *bs)
header_data.snapshots_offset = cpu_to_be64(snapshots_offset);
ret = bdrv_pwrite_sync(bs->file, offsetof(QCowHeader, nb_snapshots),
- &header_data, sizeof(header_data), 0);
+ sizeof(header_data), &header_data, 0);
if (ret < 0) {
goto fail;
}
@@ -442,7 +442,7 @@ int coroutine_fn qcow2_check_read_snapshot_table(BlockDriverState *bs,
/* qcow2_do_open() discards this information in check mode */
ret = bdrv_pread(bs->file, offsetof(QCowHeader, nb_snapshots),
- &snapshot_table_pointer, sizeof(snapshot_table_pointer),
+ sizeof(snapshot_table_pointer), &snapshot_table_pointer,
0);
if (ret < 0) {
result->check_errors++;
@@ -513,8 +513,8 @@ int coroutine_fn qcow2_check_read_snapshot_table(BlockDriverState *bs,
snapshot_table_pointer.nb_snapshots = cpu_to_be32(s->nb_snapshots);
ret = bdrv_pwrite_sync(bs->file, offsetof(QCowHeader, nb_snapshots),
- &snapshot_table_pointer.nb_snapshots,
- sizeof(snapshot_table_pointer.nb_snapshots), 0);
+ sizeof(snapshot_table_pointer.nb_snapshots),
+ &snapshot_table_pointer.nb_snapshots, 0);
if (ret < 0) {
result->check_errors++;
fprintf(stderr, "ERROR failed to update the snapshot count in the "
@@ -694,8 +694,8 @@ int qcow2_snapshot_create(BlockDriverState *bs, QEMUSnapshotInfo *sn_info)
goto fail;
}
- ret = bdrv_pwrite(bs->file, sn->l1_table_offset, l1_table,
- s->l1_size * L1E_SIZE, 0);
+ ret = bdrv_pwrite(bs->file, sn->l1_table_offset, s->l1_size * L1E_SIZE,
+ l1_table, 0);
if (ret < 0) {
goto fail;
}
@@ -830,7 +830,7 @@ 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, sn->l1_table_offset, sn_l1_bytes, sn_l1_table,
0);
if (ret < 0) {
goto fail;
@@ -849,8 +849,8 @@ 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,
- cur_l1_bytes, 0);
+ ret = bdrv_pwrite_sync(bs->file, s->l1_table_offset, cur_l1_bytes,
+ sn_l1_table, 0);
if (ret < 0) {
goto fail;
}
@@ -1052,8 +1052,8 @@ int qcow2_snapshot_load_tmp(BlockDriverState *bs,
return -ENOMEM;
}
- ret = bdrv_pread(bs->file, sn->l1_table_offset, new_l1_table,
- new_l1_bytes, 0);
+ ret = bdrv_pread(bs->file, sn->l1_table_offset, new_l1_bytes,
+ new_l1_table, 0);
if (ret < 0) {
error_setg(errp, "Failed to read l1 table for snapshot");
qemu_vfree(new_l1_table);
diff --git a/block/qcow2.c b/block/qcow2.c
index 99192d1242..5493e6b847 100644
--- a/block/qcow2.c
+++ b/block/qcow2.c
@@ -107,7 +107,7 @@ static ssize_t qcow2_crypto_hdr_read_func(QCryptoBlock *block, size_t offset,
return -1;
}
- ret = bdrv_pread(bs->file, s->crypto_header.offset + offset, buf, buflen,
+ ret = bdrv_pread(bs->file, s->crypto_header.offset + offset, buflen, buf,
0);
if (ret < 0) {
error_setg_errno(errp, -ret, "Could not read encryption header");
@@ -168,7 +168,7 @@ static ssize_t qcow2_crypto_hdr_write_func(QCryptoBlock *block, size_t offset,
return -1;
}
- ret = bdrv_pwrite(bs->file, s->crypto_header.offset + offset, buf, buflen,
+ ret = bdrv_pwrite(bs->file, s->crypto_header.offset + offset, buflen, buf,
0);
if (ret < 0) {
error_setg_errno(errp, -ret, "Could not read encryption header");
@@ -227,7 +227,7 @@ static int qcow2_read_extensions(BlockDriverState *bs, uint64_t start_offset,
printf("attempting to read extended header in offset %lu\n", offset);
#endif
- ret = bdrv_pread(bs->file, offset, &ext, sizeof(ext), 0);
+ ret = bdrv_pread(bs->file, offset, sizeof(ext), &ext, 0);
if (ret < 0) {
error_setg_errno(errp, -ret, "qcow2_read_extension: ERROR: "
"pread fail from offset %" PRIu64, offset);
@@ -255,7 +255,7 @@ static int qcow2_read_extensions(BlockDriverState *bs, uint64_t start_offset,
sizeof(bs->backing_format));
return 2;
}
- ret = bdrv_pread(bs->file, offset, bs->backing_format, ext.len, 0);
+ ret = bdrv_pread(bs->file, offset, ext.len, bs->backing_format, 0);
if (ret < 0) {
error_setg_errno(errp, -ret, "ERROR: ext_backing_format: "
"Could not read format name");
@@ -271,7 +271,7 @@ static int qcow2_read_extensions(BlockDriverState *bs, uint64_t start_offset,
case QCOW2_EXT_MAGIC_FEATURE_TABLE:
if (p_feature_table != NULL) {
void *feature_table = g_malloc0(ext.len + 2 * sizeof(Qcow2Feature));
- ret = bdrv_pread(bs->file, offset, feature_table, ext.len, 0);
+ ret = bdrv_pread(bs->file, offset, ext.len, feature_table, 0);
if (ret < 0) {
error_setg_errno(errp, -ret, "ERROR: ext_feature_table: "
"Could not read table");
@@ -296,7 +296,7 @@ static int qcow2_read_extensions(BlockDriverState *bs, uint64_t start_offset,
return -EINVAL;
}
- ret = bdrv_pread(bs->file, offset, &s->crypto_header, ext.len, 0);
+ ret = bdrv_pread(bs->file, offset, ext.len, &s->crypto_header, 0);
if (ret < 0) {
error_setg_errno(errp, -ret,
"Unable to read CRYPTO header extension");
@@ -352,7 +352,7 @@ static int qcow2_read_extensions(BlockDriverState *bs, uint64_t start_offset,
break;
}
- ret = bdrv_pread(bs->file, offset, &bitmaps_ext, ext.len, 0);
+ ret = bdrv_pread(bs->file, offset, ext.len, &bitmaps_ext, 0);
if (ret < 0) {
error_setg_errno(errp, -ret, "bitmaps_ext: "
"Could not read ext header");
@@ -416,7 +416,7 @@ static int qcow2_read_extensions(BlockDriverState *bs, uint64_t start_offset,
case QCOW2_EXT_MAGIC_DATA_FILE:
{
s->image_data_file = g_malloc0(ext.len + 1);
- ret = bdrv_pread(bs->file, offset, s->image_data_file, ext.len, 0);
+ ret = bdrv_pread(bs->file, offset, ext.len, s->image_data_file, 0);
if (ret < 0) {
error_setg_errno(errp, -ret,
"ERROR: Could not read data file name");
@@ -440,7 +440,7 @@ static int qcow2_read_extensions(BlockDriverState *bs, uint64_t start_offset,
uext->len = ext.len;
QLIST_INSERT_HEAD(&s->unknown_header_ext, uext, next);
- ret = bdrv_pread(bs->file, offset, uext->data, uext->len, 0);
+ ret = bdrv_pread(bs->file, offset, uext->len, uext->data, 0);
if (ret < 0) {
error_setg_errno(errp, -ret, "ERROR: unknown extension: "
"Could not read data");
@@ -517,7 +517,7 @@ int qcow2_mark_dirty(BlockDriverState *bs)
val = cpu_to_be64(s->incompatible_features | QCOW2_INCOMPAT_DIRTY);
ret = bdrv_pwrite(bs->file, offsetof(QCowHeader, incompatible_features),
- &val, sizeof(val), 0);
+ sizeof(val), &val, 0);
if (ret < 0) {
return ret;
}
@@ -1308,7 +1308,7 @@ static int coroutine_fn qcow2_do_open(BlockDriverState *bs, QDict *options,
uint64_t l1_vm_state_index;
bool update_header = false;
- ret = bdrv_pread(bs->file, 0, &header, sizeof(header), 0);
+ ret = bdrv_pread(bs->file, 0, sizeof(header), &header, 0);
if (ret < 0) {
error_setg_errno(errp, -ret, "Could not read qcow2 header");
goto fail;
@@ -1384,8 +1384,9 @@ static int coroutine_fn qcow2_do_open(BlockDriverState *bs, QDict *options,
if (header.header_length > sizeof(header)) {
s->unknown_header_fields_size = header.header_length - sizeof(header);
s->unknown_header_fields = g_malloc(s->unknown_header_fields_size);
- ret = bdrv_pread(bs->file, sizeof(header), s->unknown_header_fields,
- s->unknown_header_fields_size, 0);
+ ret = bdrv_pread(bs->file, sizeof(header),
+ s->unknown_header_fields_size,
+ s->unknown_header_fields, 0);
if (ret < 0) {
error_setg_errno(errp, -ret, "Could not read unknown qcow2 header "
"fields");
@@ -1580,8 +1581,8 @@ static int coroutine_fn qcow2_do_open(BlockDriverState *bs, QDict *options,
ret = -ENOMEM;
goto fail;
}
- ret = bdrv_pread(bs->file, s->l1_table_offset, s->l1_table,
- s->l1_size * L1E_SIZE, 0);
+ ret = bdrv_pread(bs->file, s->l1_table_offset, s->l1_size * L1E_SIZE,
+ s->l1_table, 0);
if (ret < 0) {
error_setg_errno(errp, -ret, "Could not read L1 table");
goto fail;
@@ -1698,8 +1699,8 @@ static int coroutine_fn qcow2_do_open(BlockDriverState *bs, QDict *options,
ret = -EINVAL;
goto fail;
}
- ret = bdrv_pread(bs->file, header.backing_file_offset,
- bs->auto_backing_file, len, 0);
+ ret = bdrv_pread(bs->file, header.backing_file_offset, len,
+ bs->auto_backing_file, 0);
if (ret < 0) {
error_setg_errno(errp, -ret, "Could not read backing file name");
goto fail;
@@ -3081,7 +3082,7 @@ int qcow2_update_header(BlockDriverState *bs)
}
/* Write the new header */
- ret = bdrv_pwrite(bs->file, 0, header, s->cluster_size, 0);
+ ret = bdrv_pwrite(bs->file, 0, s->cluster_size, header, 0);
if (ret < 0) {
goto fail;
}
@@ -4550,8 +4551,8 @@ static int coroutine_fn qcow2_co_truncate(BlockDriverState *bs, int64_t offset,
/* write updated header.size */
offset = cpu_to_be64(offset);
- ret = bdrv_pwrite_sync(bs->file, offsetof(QCowHeader, size), &offset,
- sizeof(offset), 0);
+ ret = bdrv_pwrite_sync(bs->file, offsetof(QCowHeader, size),
+ sizeof(offset), &offset, 0);
if (ret < 0) {
error_setg_errno(errp, -ret, "Failed to update the image size");
goto fail;
@@ -4828,7 +4829,7 @@ static int make_completely_empty(BlockDriverState *bs)
l1_ofs_rt_ofs_cls.reftable_offset = cpu_to_be64(s->cluster_size);
l1_ofs_rt_ofs_cls.reftable_clusters = cpu_to_be32(1);
ret = bdrv_pwrite_sync(bs->file, offsetof(QCowHeader, l1_table_offset),
- &l1_ofs_rt_ofs_cls, sizeof(l1_ofs_rt_ofs_cls), 0);
+ sizeof(l1_ofs_rt_ofs_cls), &l1_ofs_rt_ofs_cls, 0);
if (ret < 0) {
goto fail_broken_refcounts;
}
@@ -4859,8 +4860,8 @@ static int make_completely_empty(BlockDriverState *bs)
/* Enter the first refblock into the reftable */
rt_entry = cpu_to_be64(2 * s->cluster_size);
- ret = bdrv_pwrite_sync(bs->file, s->cluster_size, &rt_entry,
- sizeof(rt_entry), 0);
+ ret = bdrv_pwrite_sync(bs->file, s->cluster_size, sizeof(rt_entry),
+ &rt_entry, 0);
if (ret < 0) {
goto fail_broken_refcounts;
}
diff --git a/block/qed.c b/block/qed.c
index ad86079941..ba93e99570 100644
--- a/block/qed.c
+++ b/block/qed.c
@@ -90,7 +90,7 @@ int qed_write_header_sync(BDRVQEDState *s)
int ret;
qed_header_cpu_to_le(&s->header, &le);
- ret = bdrv_pwrite(s->bs->file, 0, &le, sizeof(le), 0);
+ ret = bdrv_pwrite(s->bs->file, 0, sizeof(le), &le, 0);
if (ret != sizeof(le)) {
return ret;
}
@@ -207,7 +207,7 @@ static int qed_read_string(BdrvChild *file, uint64_t offset, size_t n,
if (n >= buflen) {
return -EINVAL;
}
- ret = bdrv_pread(file, offset, buf, n, 0);
+ ret = bdrv_pread(file, offset, n, buf, 0);
if (ret < 0) {
return ret;
}
@@ -392,7 +392,7 @@ static int coroutine_fn bdrv_qed_do_open(BlockDriverState *bs, QDict *options,
int64_t file_size;
int ret;
- ret = bdrv_pread(bs->file, 0, &le_header, sizeof(le_header), 0);
+ ret = bdrv_pread(bs->file, 0, sizeof(le_header), &le_header, 0);
if (ret < 0) {
error_setg(errp, "Failed to read QED header");
return ret;
@@ -1545,7 +1545,7 @@ static int bdrv_qed_change_backing_file(BlockDriverState *bs,
}
/* Write new header */
- ret = bdrv_pwrite_sync(bs->file, 0, buffer, buffer_len, 0);
+ ret = bdrv_pwrite_sync(bs->file, 0, buffer_len, buffer, 0);
g_free(buffer);
if (ret == 0) {
memcpy(&s->header, &new_header, sizeof(new_header));
diff --git a/block/vdi.c b/block/vdi.c
index 76cec1b883..9ef55a117a 100644
--- a/block/vdi.c
+++ b/block/vdi.c
@@ -385,7 +385,7 @@ static int vdi_open(BlockDriverState *bs, QDict *options, int flags,
logout("\n");
- ret = bdrv_pread(bs->file, 0, &header, sizeof(header), 0);
+ ret = bdrv_pread(bs->file, 0, sizeof(header), &header, 0);
if (ret < 0) {
goto fail;
}
@@ -485,8 +485,8 @@ static int vdi_open(BlockDriverState *bs, QDict *options, int flags,
goto fail;
}
- ret = bdrv_pread(bs->file, header.offset_bmap, s->bmap,
- bmap_size * SECTOR_SIZE, 0);
+ ret = bdrv_pread(bs->file, header.offset_bmap, bmap_size * SECTOR_SIZE,
+ s->bmap, 0);
if (ret < 0) {
goto fail_free_bmap;
}
@@ -664,7 +664,7 @@ vdi_co_pwritev(BlockDriverState *bs, int64_t offset, int64_t bytes,
* so this full-cluster write does not overlap a partial write
* of the same cluster, issued from the "else" branch.
*/
- ret = bdrv_pwrite(bs->file, data_offset, block, s->block_size, 0);
+ ret = bdrv_pwrite(bs->file, data_offset, s->block_size, block, 0);
qemu_co_rwlock_unlock(&s->bmap_lock);
} else {
nonallocating_write:
@@ -709,7 +709,7 @@ nonallocating_write:
assert(VDI_IS_ALLOCATED(bmap_first));
*header = s->header;
vdi_header_to_le(header);
- ret = bdrv_pwrite(bs->file, 0, header, sizeof(*header), 0);
+ ret = bdrv_pwrite(bs->file, 0, sizeof(*header), header, 0);
g_free(header);
if (ret < 0) {
@@ -726,8 +726,8 @@ nonallocating_write:
base = ((uint8_t *)&s->bmap[0]) + bmap_first * SECTOR_SIZE;
logout("will write %u block map sectors starting from entry %u\n",
n_sectors, bmap_first);
- ret = bdrv_pwrite(bs->file, offset * SECTOR_SIZE, base,
- n_sectors * SECTOR_SIZE, 0);
+ ret = bdrv_pwrite(bs->file, offset * SECTOR_SIZE,
+ n_sectors * SECTOR_SIZE, base, 0);
}
return ret < 0 ? ret : 0;
diff --git a/block/vhdx-log.c b/block/vhdx-log.c
index da0057000b..572582b87b 100644
--- a/block/vhdx-log.c
+++ b/block/vhdx-log.c
@@ -84,7 +84,7 @@ static int vhdx_log_peek_hdr(BlockDriverState *bs, VHDXLogEntries *log,
offset = log->offset + read;
- ret = bdrv_pread(bs->file, offset, hdr, sizeof(VHDXLogEntryHeader), 0);
+ ret = bdrv_pread(bs->file, offset, sizeof(VHDXLogEntryHeader), hdr, 0);
if (ret < 0) {
goto exit;
}
@@ -144,7 +144,7 @@ static int vhdx_log_read_sectors(BlockDriverState *bs, VHDXLogEntries *log,
}
offset = log->offset + read;
- ret = bdrv_pread(bs->file, offset, buffer, VHDX_LOG_SECTOR_SIZE, 0);
+ ret = bdrv_pread(bs->file, offset, VHDX_LOG_SECTOR_SIZE, buffer, 0);
if (ret < 0) {
goto exit;
}
@@ -194,7 +194,7 @@ static int vhdx_log_write_sectors(BlockDriverState *bs, VHDXLogEntries *log,
/* full */
break;
}
- ret = bdrv_pwrite(bs->file, offset, buffer_tmp, VHDX_LOG_SECTOR_SIZE,
+ ret = bdrv_pwrite(bs->file, offset, VHDX_LOG_SECTOR_SIZE, buffer_tmp,
0);
if (ret < 0) {
goto exit;
@@ -466,8 +466,8 @@ static int vhdx_log_flush_desc(BlockDriverState *bs, VHDXLogDescriptor *desc,
/* count is only > 1 if we are writing zeroes */
for (i = 0; i < count; i++) {
- ret = bdrv_pwrite_sync(bs->file, file_offset, buffer,
- VHDX_LOG_SECTOR_SIZE, 0);
+ ret = bdrv_pwrite_sync(bs->file, file_offset, VHDX_LOG_SECTOR_SIZE,
+ buffer, 0);
if (ret < 0) {
goto exit;
}
@@ -970,8 +970,8 @@ static int vhdx_log_write(BlockDriverState *bs, BDRVVHDXState *s,
if (i == 0 && leading_length) {
/* partial sector at the front of the buffer */
- ret = bdrv_pread(bs->file, file_offset, merged_sector,
- VHDX_LOG_SECTOR_SIZE, 0);
+ ret = bdrv_pread(bs->file, file_offset, VHDX_LOG_SECTOR_SIZE,
+ merged_sector, 0);
if (ret < 0) {
goto exit;
}
@@ -981,8 +981,8 @@ static int vhdx_log_write(BlockDriverState *bs, BDRVVHDXState *s,
} else if (i == sectors - 1 && trailing_length) {
/* partial sector at the end of the buffer */
ret = bdrv_pread(bs->file, file_offset,
- merged_sector + trailing_length,
- VHDX_LOG_SECTOR_SIZE - trailing_length, 0);
+ VHDX_LOG_SECTOR_SIZE - trailing_length,
+ merged_sector + trailing_length, 0);
if (ret < 0) {
goto exit;
}
diff --git a/block/vhdx.c b/block/vhdx.c
index f5c812c9cf..12f5261f80 100644
--- a/block/vhdx.c
+++ b/block/vhdx.c
@@ -326,7 +326,7 @@ static int vhdx_write_header(BdrvChild *file, VHDXHeader *hdr,
buffer = qemu_blockalign(bs_file, VHDX_HEADER_SIZE);
if (read) {
/* if true, we can't assume the extra reserved bytes are 0 */
- ret = bdrv_pread(file, offset, buffer, VHDX_HEADER_SIZE, 0);
+ ret = bdrv_pread(file, offset, VHDX_HEADER_SIZE, buffer, 0);
if (ret < 0) {
goto exit;
}
@@ -340,7 +340,7 @@ static int vhdx_write_header(BdrvChild *file, VHDXHeader *hdr,
vhdx_header_le_export(hdr, header_le);
vhdx_update_checksum(buffer, VHDX_HEADER_SIZE,
offsetof(VHDXHeader, checksum));
- ret = bdrv_pwrite_sync(file, offset, header_le, sizeof(VHDXHeader), 0);
+ ret = bdrv_pwrite_sync(file, offset, sizeof(VHDXHeader), header_le, 0);
exit:
qemu_vfree(buffer);
@@ -440,7 +440,7 @@ static void vhdx_parse_header(BlockDriverState *bs, BDRVVHDXState *s,
/* We have to read the whole VHDX_HEADER_SIZE instead of
* sizeof(VHDXHeader), because the checksum is over the whole
* region */
- ret = bdrv_pread(bs->file, VHDX_HEADER1_OFFSET, buffer, VHDX_HEADER_SIZE,
+ ret = bdrv_pread(bs->file, VHDX_HEADER1_OFFSET, VHDX_HEADER_SIZE, buffer,
0);
if (ret < 0) {
goto fail;
@@ -457,7 +457,7 @@ static void vhdx_parse_header(BlockDriverState *bs, BDRVVHDXState *s,
}
}
- ret = bdrv_pread(bs->file, VHDX_HEADER2_OFFSET, buffer, VHDX_HEADER_SIZE,
+ ret = bdrv_pread(bs->file, VHDX_HEADER2_OFFSET, VHDX_HEADER_SIZE, buffer,
0);
if (ret < 0) {
goto fail;
@@ -531,8 +531,8 @@ static int vhdx_open_region_tables(BlockDriverState *bs, BDRVVHDXState *s)
* whole block */
buffer = qemu_blockalign(bs, VHDX_HEADER_BLOCK_SIZE);
- ret = bdrv_pread(bs->file, VHDX_REGION_TABLE_OFFSET, buffer,
- VHDX_HEADER_BLOCK_SIZE, 0);
+ ret = bdrv_pread(bs->file, VHDX_REGION_TABLE_OFFSET,
+ VHDX_HEADER_BLOCK_SIZE, buffer, 0);
if (ret < 0) {
goto fail;
}
@@ -644,8 +644,8 @@ static int vhdx_parse_metadata(BlockDriverState *bs, BDRVVHDXState *s)
buffer = qemu_blockalign(bs, VHDX_METADATA_TABLE_MAX_SIZE);
- ret = bdrv_pread(bs->file, s->metadata_rt.file_offset, buffer,
- VHDX_METADATA_TABLE_MAX_SIZE, 0);
+ ret = bdrv_pread(bs->file, s->metadata_rt.file_offset,
+ VHDX_METADATA_TABLE_MAX_SIZE, buffer, 0);
if (ret < 0) {
goto exit;
}
@@ -750,8 +750,8 @@ static int vhdx_parse_metadata(BlockDriverState *bs, BDRVVHDXState *s)
ret = bdrv_pread(bs->file,
s->metadata_entries.file_parameters_entry.offset
+ s->metadata_rt.file_offset,
- &s->params,
sizeof(s->params),
+ &s->params,
0);
if (ret < 0) {
@@ -786,8 +786,8 @@ static int vhdx_parse_metadata(BlockDriverState *bs, BDRVVHDXState *s)
ret = bdrv_pread(bs->file,
s->metadata_entries.virtual_disk_size_entry.offset
+ s->metadata_rt.file_offset,
- &s->virtual_disk_size,
sizeof(uint64_t),
+ &s->virtual_disk_size,
0);
if (ret < 0) {
goto exit;
@@ -795,8 +795,8 @@ static int vhdx_parse_metadata(BlockDriverState *bs, BDRVVHDXState *s)
ret = bdrv_pread(bs->file,
s->metadata_entries.logical_sector_size_entry.offset
+ s->metadata_rt.file_offset,
- &s->logical_sector_size,
sizeof(uint32_t),
+ &s->logical_sector_size,
0);
if (ret < 0) {
goto exit;
@@ -804,8 +804,8 @@ static int vhdx_parse_metadata(BlockDriverState *bs, BDRVVHDXState *s)
ret = bdrv_pread(bs->file,
s->metadata_entries.phys_sector_size_entry.offset
+ s->metadata_rt.file_offset,
- &s->physical_sector_size,
sizeof(uint32_t),
+ &s->physical_sector_size,
0);
if (ret < 0) {
goto exit;
@@ -1014,7 +1014,7 @@ static int vhdx_open(BlockDriverState *bs, QDict *options, int flags,
QLIST_INIT(&s->regions);
/* validate the file signature */
- ret = bdrv_pread(bs->file, 0, &signature, sizeof(uint64_t), 0);
+ ret = bdrv_pread(bs->file, 0, sizeof(uint64_t), &signature, 0);
if (ret < 0) {
goto fail;
}
@@ -1073,7 +1073,7 @@ static int vhdx_open(BlockDriverState *bs, QDict *options, int flags,
goto fail;
}
- ret = bdrv_pread(bs->file, s->bat_offset, s->bat, s->bat_rt.length, 0);
+ ret = bdrv_pread(bs->file, s->bat_offset, s->bat_rt.length, s->bat, 0);
if (ret < 0) {
goto fail;
}
diff --git a/block/vmdk.c b/block/vmdk.c
index 4ad09ca07b..aacea1095f 100644
--- a/block/vmdk.c
+++ b/block/vmdk.c
@@ -307,7 +307,7 @@ static int vmdk_read_cid(BlockDriverState *bs, int parent, uint32_t *pcid)
int ret;
desc = g_malloc0(DESC_SIZE);
- ret = bdrv_pread(bs->file, s->desc_offset, desc, DESC_SIZE, 0);
+ ret = bdrv_pread(bs->file, s->desc_offset, DESC_SIZE, desc, 0);
if (ret < 0) {
goto out;
}
@@ -348,7 +348,7 @@ static int vmdk_write_cid(BlockDriverState *bs, uint32_t cid)
desc = g_malloc0(DESC_SIZE);
tmp_desc = g_malloc0(DESC_SIZE);
- ret = bdrv_pread(bs->file, s->desc_offset, desc, DESC_SIZE, 0);
+ ret = bdrv_pread(bs->file, s->desc_offset, DESC_SIZE, desc, 0);
if (ret < 0) {
goto out;
}
@@ -368,7 +368,7 @@ static int vmdk_write_cid(BlockDriverState *bs, uint32_t cid)
pstrcat(desc, DESC_SIZE, tmp_desc);
}
- ret = bdrv_pwrite_sync(bs->file, s->desc_offset, desc, DESC_SIZE, 0);
+ ret = bdrv_pwrite_sync(bs->file, s->desc_offset, DESC_SIZE, desc, 0);
out:
g_free(desc);
@@ -469,7 +469,7 @@ static int vmdk_parent_open(BlockDriverState *bs)
int ret;
desc = g_malloc0(DESC_SIZE + 1);
- ret = bdrv_pread(bs->file, s->desc_offset, desc, DESC_SIZE, 0);
+ ret = bdrv_pread(bs->file, s->desc_offset, DESC_SIZE, desc, 0);
if (ret < 0) {
goto out;
}
@@ -589,8 +589,8 @@ static int vmdk_init_tables(BlockDriverState *bs, VmdkExtent *extent,
return -ENOMEM;
}
- ret = bdrv_pread(extent->file, extent->l1_table_offset, extent->l1_table,
- l1_size, 0);
+ ret = bdrv_pread(extent->file, extent->l1_table_offset, l1_size,
+ extent->l1_table, 0);
if (ret < 0) {
bdrv_refresh_filename(extent->file->bs);
error_setg_errno(errp, -ret,
@@ -615,7 +615,7 @@ static int vmdk_init_tables(BlockDriverState *bs, VmdkExtent *extent,
goto fail_l1;
}
ret = bdrv_pread(extent->file, extent->l1_backup_table_offset,
- extent->l1_backup_table, l1_size, 0);
+ l1_size, extent->l1_backup_table, 0);
if (ret < 0) {
bdrv_refresh_filename(extent->file->bs);
error_setg_errno(errp, -ret,
@@ -647,7 +647,7 @@ static int vmdk_open_vmfs_sparse(BlockDriverState *bs,
VMDK3Header header;
VmdkExtent *extent = NULL;
- ret = bdrv_pread(file, sizeof(magic), &header, sizeof(header), 0);
+ ret = bdrv_pread(file, sizeof(magic), sizeof(header), &header, 0);
if (ret < 0) {
bdrv_refresh_filename(file->bs);
error_setg_errno(errp, -ret,
@@ -811,7 +811,7 @@ static int vmdk_open_se_sparse(BlockDriverState *bs,
assert(sizeof(const_header) == SECTOR_SIZE);
- ret = bdrv_pread(file, 0, &const_header, sizeof(const_header), 0);
+ ret = bdrv_pread(file, 0, sizeof(const_header), &const_header, 0);
if (ret < 0) {
bdrv_refresh_filename(file->bs);
error_setg_errno(errp, -ret,
@@ -829,7 +829,7 @@ static int vmdk_open_se_sparse(BlockDriverState *bs,
assert(sizeof(volatile_header) == SECTOR_SIZE);
ret = bdrv_pread(file, const_header.volatile_header_offset * SECTOR_SIZE,
- &volatile_header, sizeof(volatile_header), 0);
+ sizeof(volatile_header), &volatile_header, 0);
if (ret < 0) {
bdrv_refresh_filename(file->bs);
error_setg_errno(errp, -ret,
@@ -899,7 +899,7 @@ static char *vmdk_read_desc(BdrvChild *file, uint64_t desc_offset, Error **errp)
size = MIN(size, (1 << 20) - 1); /* avoid unbounded allocation */
buf = g_malloc(size + 1);
- ret = bdrv_pread(file, desc_offset, buf, size, 0);
+ ret = bdrv_pread(file, desc_offset, size, buf, 0);
if (ret < 0) {
error_setg_errno(errp, -ret, "Could not read from file");
g_free(buf);
@@ -923,7 +923,7 @@ static int vmdk_open_vmdk4(BlockDriverState *bs,
int64_t l1_backup_offset = 0;
bool compressed;
- ret = bdrv_pread(file, sizeof(magic), &header, sizeof(header), 0);
+ ret = bdrv_pread(file, sizeof(magic), sizeof(header), &header, 0);
if (ret < 0) {
bdrv_refresh_filename(file->bs);
error_setg_errno(errp, -ret,
@@ -975,7 +975,7 @@ static int vmdk_open_vmdk4(BlockDriverState *bs,
} QEMU_PACKED footer;
ret = bdrv_pread(file, bs->file->bs->total_sectors * 512 - 1536,
- &footer, sizeof(footer), 0);
+ sizeof(footer), &footer, 0);
if (ret < 0) {
error_setg_errno(errp, -ret, "Failed to read footer");
return ret;
@@ -1442,16 +1442,16 @@ static int get_whole_cluster(BlockDriverState *bs,
if (copy_from_backing) {
/* qcow2 emits this on bs->file instead of bs->backing */
BLKDBG_EVENT(extent->file, BLKDBG_COW_READ);
- ret = bdrv_pread(bs->backing, offset, whole_grain,
- skip_start_bytes, 0);
+ ret = bdrv_pread(bs->backing, offset, skip_start_bytes,
+ whole_grain, 0);
if (ret < 0) {
ret = VMDK_ERROR;
goto exit;
}
}
BLKDBG_EVENT(extent->file, BLKDBG_COW_WRITE);
- ret = bdrv_pwrite(extent->file, cluster_offset, whole_grain,
- skip_start_bytes, 0);
+ ret = bdrv_pwrite(extent->file, cluster_offset, skip_start_bytes,
+ whole_grain, 0);
if (ret < 0) {
ret = VMDK_ERROR;
goto exit;
@@ -1463,8 +1463,8 @@ static int get_whole_cluster(BlockDriverState *bs,
/* qcow2 emits this on bs->file instead of bs->backing */
BLKDBG_EVENT(extent->file, BLKDBG_COW_READ);
ret = bdrv_pread(bs->backing, offset + skip_end_bytes,
- whole_grain + skip_end_bytes,
- cluster_bytes - skip_end_bytes, 0);
+ cluster_bytes - skip_end_bytes,
+ whole_grain + skip_end_bytes, 0);
if (ret < 0) {
ret = VMDK_ERROR;
goto exit;
@@ -1472,8 +1472,8 @@ static int get_whole_cluster(BlockDriverState *bs,
}
BLKDBG_EVENT(extent->file, BLKDBG_COW_WRITE);
ret = bdrv_pwrite(extent->file, cluster_offset + skip_end_bytes,
- whole_grain + skip_end_bytes,
- cluster_bytes - skip_end_bytes, 0);
+ cluster_bytes - skip_end_bytes,
+ whole_grain + skip_end_bytes, 0);
if (ret < 0) {
ret = VMDK_ERROR;
goto exit;
@@ -1495,7 +1495,7 @@ static int vmdk_L2update(VmdkExtent *extent, VmdkMetaData *m_data,
if (bdrv_pwrite(extent->file,
((int64_t)m_data->l2_offset * 512)
+ (m_data->l2_index * sizeof(offset)),
- &offset, sizeof(offset), 0) < 0) {
+ sizeof(offset), &offset, 0) < 0) {
return VMDK_ERROR;
}
/* update backup L2 table */
@@ -1504,7 +1504,7 @@ static int vmdk_L2update(VmdkExtent *extent, VmdkMetaData *m_data,
if (bdrv_pwrite(extent->file,
((int64_t)m_data->l2_offset * 512)
+ (m_data->l2_index * sizeof(offset)),
- &offset, sizeof(offset), 0) < 0) {
+ sizeof(offset), &offset, 0) < 0) {
return VMDK_ERROR;
}
}
@@ -1627,8 +1627,8 @@ static int get_cluster_offset(BlockDriverState *bs,
BLKDBG_EVENT(extent->file, BLKDBG_L2_LOAD);
if (bdrv_pread(extent->file,
(int64_t)l2_offset * 512,
- l2_table,
l2_size_bytes,
+ l2_table,
0
) != l2_size_bytes) {
return VMDK_ERROR;
@@ -1898,7 +1898,7 @@ static int vmdk_read_extent(VmdkExtent *extent, int64_t cluster_offset,
cluster_buf = g_malloc(buf_bytes);
uncomp_buf = g_malloc(cluster_bytes);
BLKDBG_EVENT(extent->file, BLKDBG_READ_COMPRESSED);
- ret = bdrv_pread(extent->file, cluster_offset, cluster_buf, buf_bytes, 0);
+ ret = bdrv_pread(extent->file, cluster_offset, buf_bytes, cluster_buf, 0);
if (ret < 0) {
goto out;
}
diff --git a/block/vpc.c b/block/vpc.c
index 1ccdfb0557..7f20820193 100644
--- a/block/vpc.c
+++ b/block/vpc.c
@@ -252,7 +252,7 @@ static int vpc_open(BlockDriverState *bs, QDict *options, int flags,
goto fail;
}
- ret = bdrv_pread(bs->file, 0, &s->footer, sizeof(s->footer), 0);
+ ret = bdrv_pread(bs->file, 0, sizeof(s->footer), &s->footer, 0);
if (ret < 0) {
error_setg(errp, "Unable to read VHD header");
goto fail;
@@ -272,8 +272,8 @@ static int vpc_open(BlockDriverState *bs, QDict *options, int flags,
}
/* If a fixed disk, the footer is found only at the end of the file */
- ret = bdrv_pread(bs->file, offset - sizeof(*footer), footer,
- sizeof(*footer), 0);
+ ret = bdrv_pread(bs->file, offset - sizeof(*footer), sizeof(*footer),
+ footer, 0);
if (ret < 0) {
goto fail;
}
@@ -347,7 +347,7 @@ static int vpc_open(BlockDriverState *bs, QDict *options, int flags,
if (disk_type == VHD_DYNAMIC) {
ret = bdrv_pread(bs->file, be64_to_cpu(footer->data_offset),
- &dyndisk_header, sizeof(dyndisk_header), 0);
+ sizeof(dyndisk_header), &dyndisk_header, 0);
if (ret < 0) {
error_setg(errp, "Error reading dynamic VHD header");
goto fail;
@@ -401,8 +401,8 @@ static int vpc_open(BlockDriverState *bs, QDict *options, int flags,
s->bat_offset = be64_to_cpu(dyndisk_header.table_offset);
- ret = bdrv_pread(bs->file, s->bat_offset, s->pagetable,
- pagetable_size, 0);
+ ret = bdrv_pread(bs->file, s->bat_offset, pagetable_size,
+ s->pagetable, 0);
if (ret < 0) {
error_setg(errp, "Error reading pagetable");
goto fail;
@@ -516,7 +516,7 @@ static inline int64_t get_image_offset(BlockDriverState *bs, uint64_t offset,
s->last_bitmap_offset = bitmap_offset;
memset(bitmap, 0xff, s->bitmap_size);
- r = bdrv_pwrite_sync(bs->file, bitmap_offset, bitmap, s->bitmap_size,
+ r = bdrv_pwrite_sync(bs->file, bitmap_offset, s->bitmap_size, bitmap,
0);
if (r < 0) {
*err = r;
@@ -539,7 +539,7 @@ static int rewrite_footer(BlockDriverState *bs)
BDRVVPCState *s = bs->opaque;
int64_t offset = s->free_data_block_offset;
- ret = bdrv_pwrite_sync(bs->file, offset, &s->footer, sizeof(s->footer), 0);
+ ret = bdrv_pwrite_sync(bs->file, offset, sizeof(s->footer), &s->footer, 0);
if (ret < 0)
return ret;
@@ -573,8 +573,8 @@ static int64_t alloc_block(BlockDriverState *bs, int64_t offset)
/* Initialize the block's bitmap */
memset(bitmap, 0xff, s->bitmap_size);
- ret = bdrv_pwrite_sync(bs->file, s->free_data_block_offset, bitmap,
- s->bitmap_size, 0);
+ ret = bdrv_pwrite_sync(bs->file, s->free_data_block_offset,
+ s->bitmap_size, bitmap, 0);
if (ret < 0) {
return ret;
}
@@ -588,7 +588,7 @@ static int64_t alloc_block(BlockDriverState *bs, int64_t offset)
/* Write BAT entry to disk */
bat_offset = s->bat_offset + (4 * index);
bat_value = cpu_to_be32(s->pagetable[index]);
- ret = bdrv_pwrite_sync(bs->file, bat_offset, &bat_value, 4, 0);
+ ret = bdrv_pwrite_sync(bs->file, bat_offset, 4, &bat_value, 0);
if (ret < 0)
goto fail;
diff --git a/block/vvfat.c b/block/vvfat.c
index 87595dfc69..d6dd919683 100644
--- a/block/vvfat.c
+++ b/block/vvfat.c
@@ -1488,8 +1488,8 @@ static int vvfat_read(BlockDriverState *bs, int64_t sector_num,
DLOG(fprintf(stderr, "sectors %" PRId64 "+%" PRId64
" allocated\n", sector_num,
n >> BDRV_SECTOR_BITS));
- if (bdrv_pread(s->qcow, sector_num * BDRV_SECTOR_SIZE,
- buf + i * 0x200, n, 0) < 0) {
+ if (bdrv_pread(s->qcow, sector_num * BDRV_SECTOR_SIZE, n,
+ buf + i * 0x200, 0) < 0) {
return -1;
}
i += (n >> BDRV_SECTOR_BITS) - 1;
@@ -1978,7 +1978,7 @@ static uint32_t get_cluster_count_for_direntry(BDRVVVFATState* s,
return -1;
}
res = bdrv_pwrite(s->qcow, offset * BDRV_SECTOR_SIZE,
- s->cluster_buffer, BDRV_SECTOR_SIZE,
+ BDRV_SECTOR_SIZE, s->cluster_buffer,
0);
if (res < 0) {
return -2;
@@ -3063,8 +3063,8 @@ DLOG(checkpoint());
* Use qcow backend. Commit later.
*/
DLOG(fprintf(stderr, "Write to qcow backend: %d + %d\n", (int)sector_num, nb_sectors));
- ret = bdrv_pwrite(s->qcow, sector_num * BDRV_SECTOR_SIZE, buf,
- nb_sectors * BDRV_SECTOR_SIZE, 0);
+ ret = bdrv_pwrite(s->qcow, sector_num * BDRV_SECTOR_SIZE,
+ nb_sectors * BDRV_SECTOR_SIZE, buf, 0);
if (ret < 0) {
fprintf(stderr, "Error writing to qcow backend\n");
return ret;
diff --git a/include/block/block-io.h b/include/block/block-io.h
index 900ab19545..879221cebe 100644
--- a/include/block/block-io.h
+++ b/include/block/block-io.h
@@ -42,12 +42,12 @@
int bdrv_pwrite_zeroes(BdrvChild *child, int64_t offset,
int64_t bytes, BdrvRequestFlags flags);
int bdrv_make_zero(BdrvChild *child, BdrvRequestFlags flags);
-int bdrv_pread(BdrvChild *child, int64_t offset, void *buf, int64_t bytes,
+int bdrv_pread(BdrvChild *child, int64_t offset, int64_t bytes, void *buf,
BdrvRequestFlags flags);
-int bdrv_pwrite(BdrvChild *child, int64_t offset, const void *buf,
- int64_t bytes, BdrvRequestFlags flags);
-int bdrv_pwrite_sync(BdrvChild *child, int64_t offset,
- const void *buf, int64_t bytes, BdrvRequestFlags flags);
+int bdrv_pwrite(BdrvChild *child, int64_t offset, int64_t bytes,
+ const void *buf, BdrvRequestFlags flags);
+int bdrv_pwrite_sync(BdrvChild *child, int64_t offset, int64_t bytes,
+ const void *buf, BdrvRequestFlags flags);
/*
* Efficiently zero a region of the disk image. Note that this is a regular
* I/O request like read or write and should have a reasonable size. This
diff --git a/tests/unit/test-block-iothread.c b/tests/unit/test-block-iothread.c
index 4db1ad5dfe..49fb1ef1ea 100644
--- a/tests/unit/test-block-iothread.c
+++ b/tests/unit/test-block-iothread.c
@@ -88,11 +88,11 @@ static void test_sync_op_pread(BdrvChild *c)
int ret;
/* Success */
- ret = bdrv_pread(c, 0, buf, sizeof(buf), 0);
+ ret = bdrv_pread(c, 0, sizeof(buf), buf, 0);
g_assert_cmpint(ret, ==, 512);
/* Early error: Negative offset */
- ret = bdrv_pread(c, -2, buf, sizeof(buf), 0);
+ ret = bdrv_pread(c, -2, sizeof(buf), buf, 0);
g_assert_cmpint(ret, ==, -EIO);
}
@@ -102,11 +102,11 @@ static void test_sync_op_pwrite(BdrvChild *c)
int ret;
/* Success */
- ret = bdrv_pwrite(c, 0, buf, sizeof(buf), 0);
+ ret = bdrv_pwrite(c, 0, sizeof(buf), buf, 0);
g_assert_cmpint(ret, ==, 512);
/* Early error: Negative offset */
- ret = bdrv_pwrite(c, -2, buf, sizeof(buf), 0);
+ ret = bdrv_pwrite(c, -2, sizeof(buf), buf, 0);
g_assert_cmpint(ret, ==, -EIO);
}
--
2.35.3
^ permalink raw reply related [flat|nested] 18+ messages in thread
* [PATCH v2 03/10] block: Make bdrv_{pread, pwrite}() return 0 on success
2022-05-13 15:54 [PATCH v2 00/10] Implement bdrv_{pread, pwrite, pwrite_sync, pwrite_zeroes}() using generated_co_wrapper Alberto Faria
2022-05-13 15:54 ` [PATCH v2 01/10] block: Add a 'flags' param to bdrv_{pread, pwrite, pwrite_sync}() Alberto Faria
2022-05-13 15:54 ` [PATCH v2 02/10] block: Change bdrv_{pread, pwrite, pwrite_sync}() param order Alberto Faria
@ 2022-05-13 15:57 ` Alberto Faria
2022-05-13 15:57 ` [PATCH v2 04/10] crypto: Make block callbacks " Alberto Faria
` (6 subsequent siblings)
9 siblings, 0 replies; 18+ messages in thread
From: Alberto Faria @ 2022-05-13 15:57 UTC (permalink / raw)
To: qemu-devel
Cc: qemu-block, Alberto Faria, Paolo Bonzini, Stefan Hajnoczi,
Kevin Wolf, Hanna Reitz, Fam Zheng, Stefan Weil
They currently return the value of their 'bytes' parameter on success.
Make them return 0 instead, for consistency with other I/O functions and
in preparation to implement them using generated_co_wrapper. This also
makes it clear that short reads/writes are not possible.
The few callers that rely on the previous behavior are adjusted
accordingly by hand.
Signed-off-by: Alberto Faria <afaria@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
---
block/cloop.c | 2 +-
block/crypto.c | 4 ++--
block/dmg.c | 10 +++++-----
block/io.c | 10 ++--------
block/qcow.c | 2 +-
block/qcow2.c | 4 ++--
block/qed.c | 7 +------
block/vdi.c | 2 +-
block/vmdk.c | 5 ++---
tests/unit/test-block-iothread.c | 4 ++--
10 files changed, 19 insertions(+), 31 deletions(-)
diff --git a/block/cloop.c b/block/cloop.c
index 9a2334495e..40b146e714 100644
--- a/block/cloop.c
+++ b/block/cloop.c
@@ -222,7 +222,7 @@ static inline int cloop_read_block(BlockDriverState *bs, int block_num)
ret = bdrv_pread(bs->file, s->offsets[block_num], bytes,
s->compressed_block, 0);
- if (ret != bytes) {
+ if (ret < 0) {
return -1;
}
diff --git a/block/crypto.c b/block/crypto.c
index deec7fae2f..e7f5c4e31a 100644
--- a/block/crypto.c
+++ b/block/crypto.c
@@ -70,7 +70,7 @@ static ssize_t block_crypto_read_func(QCryptoBlock *block,
error_setg_errno(errp, -ret, "Could not read encryption header");
return ret;
}
- return ret;
+ return buflen;
}
static ssize_t block_crypto_write_func(QCryptoBlock *block,
@@ -88,7 +88,7 @@ static ssize_t block_crypto_write_func(QCryptoBlock *block,
error_setg_errno(errp, -ret, "Could not write encryption header");
return ret;
}
- return ret;
+ return buflen;
}
diff --git a/block/dmg.c b/block/dmg.c
index 5a460c3eb1..98db18d82a 100644
--- a/block/dmg.c
+++ b/block/dmg.c
@@ -390,7 +390,7 @@ static int dmg_read_plist_xml(BlockDriverState *bs, DmgHeaderState *ds,
buffer = g_malloc(info_length + 1);
buffer[info_length] = '\0';
ret = bdrv_pread(bs->file, info_begin, info_length, buffer, 0);
- if (ret != info_length) {
+ if (ret < 0) {
ret = -EINVAL;
goto fail;
}
@@ -611,7 +611,7 @@ static inline int dmg_read_chunk(BlockDriverState *bs, uint64_t sector_num)
* inflated. */
ret = bdrv_pread(bs->file, s->offsets[chunk], s->lengths[chunk],
s->compressed_chunk, 0);
- if (ret != s->lengths[chunk]) {
+ if (ret < 0) {
return -1;
}
@@ -637,7 +637,7 @@ static inline int dmg_read_chunk(BlockDriverState *bs, uint64_t sector_num)
* inflated. */
ret = bdrv_pread(bs->file, s->offsets[chunk], s->lengths[chunk],
s->compressed_chunk, 0);
- if (ret != s->lengths[chunk]) {
+ if (ret < 0) {
return -1;
}
@@ -658,7 +658,7 @@ static inline int dmg_read_chunk(BlockDriverState *bs, uint64_t sector_num)
* inflated. */
ret = bdrv_pread(bs->file, s->offsets[chunk], s->lengths[chunk],
s->compressed_chunk, 0);
- if (ret != s->lengths[chunk]) {
+ if (ret < 0) {
return -1;
}
@@ -674,7 +674,7 @@ static inline int dmg_read_chunk(BlockDriverState *bs, uint64_t sector_num)
case UDRW: /* copy */
ret = bdrv_pread(bs->file, s->offsets[chunk], s->lengths[chunk],
s->uncompressed_chunk, 0);
- if (ret != s->lengths[chunk]) {
+ if (ret < 0) {
return -1;
}
break;
diff --git a/block/io.c b/block/io.c
index 2ed963d9e0..78a289192e 100644
--- a/block/io.c
+++ b/block/io.c
@@ -1115,7 +1115,6 @@ int bdrv_make_zero(BdrvChild *child, BdrvRequestFlags flags)
int bdrv_pread(BdrvChild *child, int64_t offset, int64_t bytes, void *buf,
BdrvRequestFlags flags)
{
- int ret;
QEMUIOVector qiov = QEMU_IOVEC_INIT_BUF(qiov, buf, bytes);
IO_CODE();
@@ -1123,9 +1122,7 @@ int bdrv_pread(BdrvChild *child, int64_t offset, int64_t bytes, void *buf,
return -EINVAL;
}
- ret = bdrv_preadv(child, offset, bytes, &qiov, flags);
-
- return ret < 0 ? ret : bytes;
+ return bdrv_preadv(child, offset, bytes, &qiov, flags);
}
/* Return no. of bytes on success or < 0 on error. Important errors are:
@@ -1137,7 +1134,6 @@ int bdrv_pread(BdrvChild *child, int64_t offset, int64_t bytes, void *buf,
int bdrv_pwrite(BdrvChild *child, int64_t offset, int64_t bytes,
const void *buf, BdrvRequestFlags flags)
{
- int ret;
QEMUIOVector qiov = QEMU_IOVEC_INIT_BUF(qiov, buf, bytes);
IO_CODE();
@@ -1145,9 +1141,7 @@ int bdrv_pwrite(BdrvChild *child, int64_t offset, int64_t bytes,
return -EINVAL;
}
- ret = bdrv_pwritev(child, offset, bytes, &qiov, flags);
-
- return ret < 0 ? ret : bytes;
+ return bdrv_pwritev(child, offset, bytes, &qiov, flags);
}
/*
diff --git a/block/qcow.c b/block/qcow.c
index c94524b814..c646d6b16d 100644
--- a/block/qcow.c
+++ b/block/qcow.c
@@ -597,7 +597,7 @@ static int decompress_cluster(BlockDriverState *bs, uint64_t cluster_offset)
csize &= (s->cluster_size - 1);
BLKDBG_EVENT(bs->file, BLKDBG_READ_COMPRESSED);
ret = bdrv_pread(bs->file, coffset, csize, s->cluster_data, 0);
- if (ret != csize)
+ if (ret < 0)
return -1;
if (decompress_buffer(s->cluster_cache, s->cluster_size,
s->cluster_data, csize) < 0) {
diff --git a/block/qcow2.c b/block/qcow2.c
index 5493e6b847..d5a1e8bc43 100644
--- a/block/qcow2.c
+++ b/block/qcow2.c
@@ -113,7 +113,7 @@ static ssize_t qcow2_crypto_hdr_read_func(QCryptoBlock *block, size_t offset,
error_setg_errno(errp, -ret, "Could not read encryption header");
return -1;
}
- return ret;
+ return buflen;
}
@@ -174,7 +174,7 @@ static ssize_t qcow2_crypto_hdr_write_func(QCryptoBlock *block, size_t offset,
error_setg_errno(errp, -ret, "Could not read encryption header");
return -1;
}
- return ret;
+ return buflen;
}
static QDict*
diff --git a/block/qed.c b/block/qed.c
index ba93e99570..55da91eb72 100644
--- a/block/qed.c
+++ b/block/qed.c
@@ -87,14 +87,9 @@ static void qed_header_cpu_to_le(const QEDHeader *cpu, QEDHeader *le)
int qed_write_header_sync(BDRVQEDState *s)
{
QEDHeader le;
- int ret;
qed_header_cpu_to_le(&s->header, &le);
- ret = bdrv_pwrite(s->bs->file, 0, sizeof(le), &le, 0);
- if (ret != sizeof(le)) {
- return ret;
- }
- return 0;
+ return bdrv_pwrite(s->bs->file, 0, sizeof(le), &le, 0);
}
/**
diff --git a/block/vdi.c b/block/vdi.c
index 9ef55a117a..a0be2a23b9 100644
--- a/block/vdi.c
+++ b/block/vdi.c
@@ -730,7 +730,7 @@ nonallocating_write:
n_sectors * SECTOR_SIZE, base, 0);
}
- return ret < 0 ? ret : 0;
+ return ret;
}
static int coroutine_fn vdi_co_do_create(BlockdevCreateOptions *create_options,
diff --git a/block/vmdk.c b/block/vmdk.c
index aacea1095f..332565c80f 100644
--- a/block/vmdk.c
+++ b/block/vmdk.c
@@ -473,7 +473,6 @@ static int vmdk_parent_open(BlockDriverState *bs)
if (ret < 0) {
goto out;
}
- ret = 0;
p_name = strstr(desc, "parentFileNameHint");
if (p_name != NULL) {
@@ -905,7 +904,7 @@ static char *vmdk_read_desc(BdrvChild *file, uint64_t desc_offset, Error **errp)
g_free(buf);
return NULL;
}
- buf[ret] = 0;
+ buf[size] = 0;
return buf;
}
@@ -1630,7 +1629,7 @@ static int get_cluster_offset(BlockDriverState *bs,
l2_size_bytes,
l2_table,
0
- ) != l2_size_bytes) {
+ ) < 0) {
return VMDK_ERROR;
}
diff --git a/tests/unit/test-block-iothread.c b/tests/unit/test-block-iothread.c
index 49fb1ef1ea..a5c163af7e 100644
--- a/tests/unit/test-block-iothread.c
+++ b/tests/unit/test-block-iothread.c
@@ -89,7 +89,7 @@ static void test_sync_op_pread(BdrvChild *c)
/* Success */
ret = bdrv_pread(c, 0, sizeof(buf), buf, 0);
- g_assert_cmpint(ret, ==, 512);
+ g_assert_cmpint(ret, ==, 0);
/* Early error: Negative offset */
ret = bdrv_pread(c, -2, sizeof(buf), buf, 0);
@@ -103,7 +103,7 @@ static void test_sync_op_pwrite(BdrvChild *c)
/* Success */
ret = bdrv_pwrite(c, 0, sizeof(buf), buf, 0);
- g_assert_cmpint(ret, ==, 512);
+ g_assert_cmpint(ret, ==, 0);
/* Early error: Negative offset */
ret = bdrv_pwrite(c, -2, sizeof(buf), buf, 0);
--
2.35.3
^ permalink raw reply related [flat|nested] 18+ messages in thread
* [PATCH v2 04/10] crypto: Make block callbacks return 0 on success
2022-05-13 15:54 [PATCH v2 00/10] Implement bdrv_{pread, pwrite, pwrite_sync, pwrite_zeroes}() using generated_co_wrapper Alberto Faria
` (2 preceding siblings ...)
2022-05-13 15:57 ` [PATCH v2 03/10] block: Make bdrv_{pread, pwrite}() return 0 on success Alberto Faria
@ 2022-05-13 15:57 ` Alberto Faria
2022-05-17 14:26 ` Eric Blake
2022-05-13 15:57 ` [PATCH v2 05/10] block: Make bdrv_co_pwrite() take a const buffer Alberto Faria
` (5 subsequent siblings)
9 siblings, 1 reply; 18+ messages in thread
From: Alberto Faria @ 2022-05-13 15:57 UTC (permalink / raw)
To: qemu-devel
Cc: qemu-block, Alberto Faria, Kevin Wolf, Hanna Reitz,
Daniel P. Berrangé
They currently return the value of their headerlen/buflen parameter on
success. Returning 0 instead makes it clear that short reads/writes are
not possible.
Signed-off-by: Alberto Faria <afaria@redhat.com>
---
block/crypto.c | 52 +++++++++++++++++-----------------
block/qcow2.c | 22 +++++++-------
crypto/block-luks.c | 8 +++---
crypto/block.c | 6 ++--
include/crypto/block.h | 32 ++++++++++-----------
tests/unit/test-crypto-block.c | 38 ++++++++++++-------------
6 files changed, 79 insertions(+), 79 deletions(-)
diff --git a/block/crypto.c b/block/crypto.c
index e7f5c4e31a..11c3ddbc73 100644
--- a/block/crypto.c
+++ b/block/crypto.c
@@ -55,12 +55,12 @@ static int block_crypto_probe_generic(QCryptoBlockFormat format,
}
-static ssize_t block_crypto_read_func(QCryptoBlock *block,
- size_t offset,
- uint8_t *buf,
- size_t buflen,
- void *opaque,
- Error **errp)
+static int block_crypto_read_func(QCryptoBlock *block,
+ size_t offset,
+ uint8_t *buf,
+ size_t buflen,
+ void *opaque,
+ Error **errp)
{
BlockDriverState *bs = opaque;
ssize_t ret;
@@ -70,15 +70,15 @@ static ssize_t block_crypto_read_func(QCryptoBlock *block,
error_setg_errno(errp, -ret, "Could not read encryption header");
return ret;
}
- return buflen;
+ return 0;
}
-static ssize_t block_crypto_write_func(QCryptoBlock *block,
- size_t offset,
- const uint8_t *buf,
- size_t buflen,
- void *opaque,
- Error **errp)
+static int block_crypto_write_func(QCryptoBlock *block,
+ size_t offset,
+ const uint8_t *buf,
+ size_t buflen,
+ void *opaque,
+ Error **errp)
{
BlockDriverState *bs = opaque;
ssize_t ret;
@@ -88,7 +88,7 @@ static ssize_t block_crypto_write_func(QCryptoBlock *block,
error_setg_errno(errp, -ret, "Could not write encryption header");
return ret;
}
- return buflen;
+ return 0;
}
@@ -99,12 +99,12 @@ struct BlockCryptoCreateData {
};
-static ssize_t block_crypto_create_write_func(QCryptoBlock *block,
- size_t offset,
- const uint8_t *buf,
- size_t buflen,
- void *opaque,
- Error **errp)
+static int block_crypto_create_write_func(QCryptoBlock *block,
+ size_t offset,
+ const uint8_t *buf,
+ size_t buflen,
+ void *opaque,
+ Error **errp)
{
struct BlockCryptoCreateData *data = opaque;
ssize_t ret;
@@ -114,13 +114,13 @@ static ssize_t block_crypto_create_write_func(QCryptoBlock *block,
error_setg_errno(errp, -ret, "Could not write encryption header");
return ret;
}
- return ret;
+ return 0;
}
-static ssize_t block_crypto_create_init_func(QCryptoBlock *block,
- size_t headerlen,
- void *opaque,
- Error **errp)
+static int block_crypto_create_init_func(QCryptoBlock *block,
+ size_t headerlen,
+ void *opaque,
+ Error **errp)
{
struct BlockCryptoCreateData *data = opaque;
Error *local_error = NULL;
@@ -139,7 +139,7 @@ static ssize_t block_crypto_create_init_func(QCryptoBlock *block,
data->prealloc, 0, &local_error);
if (ret >= 0) {
- return ret;
+ return 0;
}
error:
diff --git a/block/qcow2.c b/block/qcow2.c
index d5a1e8bc43..c43238a006 100644
--- a/block/qcow2.c
+++ b/block/qcow2.c
@@ -94,9 +94,9 @@ static int qcow2_probe(const uint8_t *buf, int buf_size, const char *filename)
}
-static ssize_t qcow2_crypto_hdr_read_func(QCryptoBlock *block, size_t offset,
- uint8_t *buf, size_t buflen,
- void *opaque, Error **errp)
+static int qcow2_crypto_hdr_read_func(QCryptoBlock *block, size_t offset,
+ uint8_t *buf, size_t buflen,
+ void *opaque, Error **errp)
{
BlockDriverState *bs = opaque;
BDRVQcow2State *s = bs->opaque;
@@ -113,12 +113,12 @@ static ssize_t qcow2_crypto_hdr_read_func(QCryptoBlock *block, size_t offset,
error_setg_errno(errp, -ret, "Could not read encryption header");
return -1;
}
- return buflen;
+ return 0;
}
-static ssize_t qcow2_crypto_hdr_init_func(QCryptoBlock *block, size_t headerlen,
- void *opaque, Error **errp)
+static int qcow2_crypto_hdr_init_func(QCryptoBlock *block, size_t headerlen,
+ void *opaque, Error **errp)
{
BlockDriverState *bs = opaque;
BDRVQcow2State *s = bs->opaque;
@@ -151,13 +151,13 @@ static ssize_t qcow2_crypto_hdr_init_func(QCryptoBlock *block, size_t headerlen,
return -1;
}
- return ret;
+ return 0;
}
-static ssize_t qcow2_crypto_hdr_write_func(QCryptoBlock *block, size_t offset,
- const uint8_t *buf, size_t buflen,
- void *opaque, Error **errp)
+static int qcow2_crypto_hdr_write_func(QCryptoBlock *block, size_t offset,
+ const uint8_t *buf, size_t buflen,
+ void *opaque, Error **errp)
{
BlockDriverState *bs = opaque;
BDRVQcow2State *s = bs->opaque;
@@ -174,7 +174,7 @@ static ssize_t qcow2_crypto_hdr_write_func(QCryptoBlock *block, size_t offset,
error_setg_errno(errp, -ret, "Could not read encryption header");
return -1;
}
- return buflen;
+ return 0;
}
static QDict*
diff --git a/crypto/block-luks.c b/crypto/block-luks.c
index fe8f04ffb2..f62be6836b 100644
--- a/crypto/block-luks.c
+++ b/crypto/block-luks.c
@@ -495,7 +495,7 @@ qcrypto_block_luks_load_header(QCryptoBlock *block,
void *opaque,
Error **errp)
{
- ssize_t rv;
+ int rv;
size_t i;
QCryptoBlockLUKS *luks = block->opaque;
@@ -856,7 +856,7 @@ qcrypto_block_luks_store_key(QCryptoBlock *block,
QCRYPTO_BLOCK_LUKS_SECTOR_SIZE,
splitkey, splitkeylen,
opaque,
- errp) != splitkeylen) {
+ errp) < 0) {
goto cleanup;
}
@@ -903,7 +903,7 @@ qcrypto_block_luks_load_key(QCryptoBlock *block,
g_autofree uint8_t *splitkey = NULL;
size_t splitkeylen;
g_autofree uint8_t *possiblekey = NULL;
- ssize_t rv;
+ int rv;
g_autoptr(QCryptoCipher) cipher = NULL;
uint8_t keydigest[QCRYPTO_BLOCK_LUKS_DIGEST_LEN];
g_autoptr(QCryptoIVGen) ivgen = NULL;
@@ -1193,7 +1193,7 @@ qcrypto_block_luks_erase_key(QCryptoBlock *block,
garbagesplitkey,
splitkeylen,
opaque,
- &local_err) != splitkeylen) {
+ &local_err) < 0) {
error_propagate(errp, local_err);
return -1;
}
diff --git a/crypto/block.c b/crypto/block.c
index eb057948b5..7bb4b74a37 100644
--- a/crypto/block.c
+++ b/crypto/block.c
@@ -115,7 +115,7 @@ QCryptoBlock *qcrypto_block_create(QCryptoBlockCreateOptions *options,
}
-static ssize_t qcrypto_block_headerlen_hdr_init_func(QCryptoBlock *block,
+static int qcrypto_block_headerlen_hdr_init_func(QCryptoBlock *block,
size_t headerlen, void *opaque, Error **errp)
{
size_t *headerlenp = opaque;
@@ -126,12 +126,12 @@ static ssize_t qcrypto_block_headerlen_hdr_init_func(QCryptoBlock *block,
}
-static ssize_t qcrypto_block_headerlen_hdr_write_func(QCryptoBlock *block,
+static int qcrypto_block_headerlen_hdr_write_func(QCryptoBlock *block,
size_t offset, const uint8_t *buf, size_t buflen,
void *opaque, Error **errp)
{
/* Discard the bytes, we're not actually writing to an image */
- return buflen;
+ return 0;
}
diff --git a/include/crypto/block.h b/include/crypto/block.h
index 7a65e8e402..4f63a37872 100644
--- a/include/crypto/block.h
+++ b/include/crypto/block.h
@@ -29,24 +29,24 @@ typedef struct QCryptoBlock QCryptoBlock;
/* See also QCryptoBlockFormat, QCryptoBlockCreateOptions
* and QCryptoBlockOpenOptions in qapi/crypto.json */
-typedef ssize_t (*QCryptoBlockReadFunc)(QCryptoBlock *block,
- size_t offset,
- uint8_t *buf,
- size_t buflen,
- void *opaque,
- Error **errp);
+typedef int (*QCryptoBlockReadFunc)(QCryptoBlock *block,
+ size_t offset,
+ uint8_t *buf,
+ size_t buflen,
+ void *opaque,
+ Error **errp);
-typedef ssize_t (*QCryptoBlockInitFunc)(QCryptoBlock *block,
- size_t headerlen,
- void *opaque,
- Error **errp);
+typedef int (*QCryptoBlockInitFunc)(QCryptoBlock *block,
+ size_t headerlen,
+ void *opaque,
+ Error **errp);
-typedef ssize_t (*QCryptoBlockWriteFunc)(QCryptoBlock *block,
- size_t offset,
- const uint8_t *buf,
- size_t buflen,
- void *opaque,
- Error **errp);
+typedef int (*QCryptoBlockWriteFunc)(QCryptoBlock *block,
+ size_t offset,
+ const uint8_t *buf,
+ size_t buflen,
+ void *opaque,
+ Error **errp);
/**
* qcrypto_block_has_format:
diff --git a/tests/unit/test-crypto-block.c b/tests/unit/test-crypto-block.c
index 3b1f0d509f..3417b67be5 100644
--- a/tests/unit/test-crypto-block.c
+++ b/tests/unit/test-crypto-block.c
@@ -188,12 +188,12 @@ static struct QCryptoBlockTestData {
};
-static ssize_t test_block_read_func(QCryptoBlock *block,
- size_t offset,
- uint8_t *buf,
- size_t buflen,
- void *opaque,
- Error **errp)
+static int test_block_read_func(QCryptoBlock *block,
+ size_t offset,
+ uint8_t *buf,
+ size_t buflen,
+ void *opaque,
+ Error **errp)
{
Buffer *header = opaque;
@@ -201,14 +201,14 @@ static ssize_t test_block_read_func(QCryptoBlock *block,
memcpy(buf, header->buffer + offset, buflen);
- return buflen;
+ return 0;
}
-static ssize_t test_block_init_func(QCryptoBlock *block,
- size_t headerlen,
- void *opaque,
- Error **errp)
+static int test_block_init_func(QCryptoBlock *block,
+ size_t headerlen,
+ void *opaque,
+ Error **errp)
{
Buffer *header = opaque;
@@ -216,16 +216,16 @@ static ssize_t test_block_init_func(QCryptoBlock *block,
buffer_reserve(header, headerlen);
- return headerlen;
+ return 0;
}
-static ssize_t test_block_write_func(QCryptoBlock *block,
- size_t offset,
- const uint8_t *buf,
- size_t buflen,
- void *opaque,
- Error **errp)
+static int test_block_write_func(QCryptoBlock *block,
+ size_t offset,
+ const uint8_t *buf,
+ size_t buflen,
+ void *opaque,
+ Error **errp)
{
Buffer *header = opaque;
@@ -234,7 +234,7 @@ static ssize_t test_block_write_func(QCryptoBlock *block,
memcpy(header->buffer + offset, buf, buflen);
header->offset = offset + buflen;
- return buflen;
+ return 0;
}
--
2.35.3
^ permalink raw reply related [flat|nested] 18+ messages in thread
* [PATCH v2 05/10] block: Make bdrv_co_pwrite() take a const buffer
2022-05-13 15:54 [PATCH v2 00/10] Implement bdrv_{pread, pwrite, pwrite_sync, pwrite_zeroes}() using generated_co_wrapper Alberto Faria
` (3 preceding siblings ...)
2022-05-13 15:57 ` [PATCH v2 04/10] crypto: Make block callbacks " Alberto Faria
@ 2022-05-13 15:57 ` Alberto Faria
2022-05-13 15:57 ` [PATCH v2 06/10] block: Make 'bytes' param of bdrv_co_{pread, pwrite, preadv, pwritev}() an int64_t Alberto Faria
` (4 subsequent siblings)
9 siblings, 0 replies; 18+ messages in thread
From: Alberto Faria @ 2022-05-13 15:57 UTC (permalink / raw)
To: qemu-devel
Cc: qemu-block, Alberto Faria, Paolo Bonzini, Kevin Wolf, Hanna Reitz
It does not mutate the buffer.
Signed-off-by: Alberto Faria <afaria@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
---
include/block/block_int-io.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/include/block/block_int-io.h b/include/block/block_int-io.h
index bb454200e5..d4d3bed783 100644
--- a/include/block/block_int-io.h
+++ b/include/block/block_int-io.h
@@ -65,7 +65,7 @@ static inline int coroutine_fn bdrv_co_pread(BdrvChild *child,
}
static inline int coroutine_fn bdrv_co_pwrite(BdrvChild *child,
- int64_t offset, unsigned int bytes, void *buf, BdrvRequestFlags flags)
+ int64_t offset, unsigned int bytes, const void *buf, BdrvRequestFlags flags)
{
QEMUIOVector qiov = QEMU_IOVEC_INIT_BUF(qiov, buf, bytes);
IO_CODE();
--
2.35.3
^ permalink raw reply related [flat|nested] 18+ messages in thread
* [PATCH v2 06/10] block: Make 'bytes' param of bdrv_co_{pread, pwrite, preadv, pwritev}() an int64_t
2022-05-13 15:54 [PATCH v2 00/10] Implement bdrv_{pread, pwrite, pwrite_sync, pwrite_zeroes}() using generated_co_wrapper Alberto Faria
` (4 preceding siblings ...)
2022-05-13 15:57 ` [PATCH v2 05/10] block: Make bdrv_co_pwrite() take a const buffer Alberto Faria
@ 2022-05-13 15:57 ` Alberto Faria
2022-05-17 14:32 ` Eric Blake
2022-05-13 15:57 ` [PATCH v2 07/10] block: Implement bdrv_{pread, pwrite, pwrite_zeroes}() using generated_co_wrapper Alberto Faria
` (3 subsequent siblings)
9 siblings, 1 reply; 18+ messages in thread
From: Alberto Faria @ 2022-05-13 15:57 UTC (permalink / raw)
To: qemu-devel
Cc: qemu-block, Alberto Faria, Paolo Bonzini, Kevin Wolf, Hanna Reitz
For consistency with other I/O functions, and in preparation to
implement bdrv_{pread,pwrite}() using generated_co_wrapper.
unsigned int fits in int64_t, so all callers remain correct.
Signed-off-by: Alberto Faria <afaria@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
---
block/coroutines.h | 4 ++--
include/block/block_int-io.h | 4 ++--
2 files changed, 4 insertions(+), 4 deletions(-)
diff --git a/block/coroutines.h b/block/coroutines.h
index 830ecaa733..3f41238b33 100644
--- a/block/coroutines.h
+++ b/block/coroutines.h
@@ -91,11 +91,11 @@ int coroutine_fn blk_co_do_flush(BlockBackend *blk);
*/
int generated_co_wrapper
-bdrv_preadv(BdrvChild *child, int64_t offset, unsigned int bytes,
+bdrv_preadv(BdrvChild *child, int64_t offset, int64_t bytes,
QEMUIOVector *qiov, BdrvRequestFlags flags);
int generated_co_wrapper
-bdrv_pwritev(BdrvChild *child, int64_t offset, unsigned int bytes,
+bdrv_pwritev(BdrvChild *child, int64_t offset, int64_t bytes,
QEMUIOVector *qiov, BdrvRequestFlags flags);
int generated_co_wrapper
diff --git a/include/block/block_int-io.h b/include/block/block_int-io.h
index d4d3bed783..d1a6970dc6 100644
--- a/include/block/block_int-io.h
+++ b/include/block/block_int-io.h
@@ -56,7 +56,7 @@ int coroutine_fn bdrv_co_pwritev_part(BdrvChild *child,
QEMUIOVector *qiov, size_t qiov_offset, BdrvRequestFlags flags);
static inline int coroutine_fn bdrv_co_pread(BdrvChild *child,
- int64_t offset, unsigned int bytes, void *buf, BdrvRequestFlags flags)
+ int64_t offset, int64_t bytes, void *buf, BdrvRequestFlags flags)
{
QEMUIOVector qiov = QEMU_IOVEC_INIT_BUF(qiov, buf, bytes);
IO_CODE();
@@ -65,7 +65,7 @@ static inline int coroutine_fn bdrv_co_pread(BdrvChild *child,
}
static inline int coroutine_fn bdrv_co_pwrite(BdrvChild *child,
- int64_t offset, unsigned int bytes, const void *buf, BdrvRequestFlags flags)
+ int64_t offset, int64_t bytes, const void *buf, BdrvRequestFlags flags)
{
QEMUIOVector qiov = QEMU_IOVEC_INIT_BUF(qiov, buf, bytes);
IO_CODE();
--
2.35.3
^ permalink raw reply related [flat|nested] 18+ messages in thread
* [PATCH v2 07/10] block: Implement bdrv_{pread, pwrite, pwrite_zeroes}() using generated_co_wrapper
2022-05-13 15:54 [PATCH v2 00/10] Implement bdrv_{pread, pwrite, pwrite_sync, pwrite_zeroes}() using generated_co_wrapper Alberto Faria
` (5 preceding siblings ...)
2022-05-13 15:57 ` [PATCH v2 06/10] block: Make 'bytes' param of bdrv_co_{pread, pwrite, preadv, pwritev}() an int64_t Alberto Faria
@ 2022-05-13 15:57 ` Alberto Faria
2022-05-13 15:57 ` [PATCH v2 08/10] block: Add bdrv_co_pwrite_sync() Alberto Faria
` (2 subsequent siblings)
9 siblings, 0 replies; 18+ messages in thread
From: Alberto Faria @ 2022-05-13 15:57 UTC (permalink / raw)
To: qemu-devel
Cc: qemu-block, Alberto Faria, Paolo Bonzini, Stefan Hajnoczi,
Fam Zheng, Kevin Wolf, Hanna Reitz
bdrv_pwrite_zeroes() now also calls trace_bdrv_co_pwrite_zeroes() and
clears the BDRV_REQ_MAY_UNMAP flag when appropriate, which it didn't
previously.
Signed-off-by: Alberto Faria <afaria@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
---
block/io.c | 41 ----------------------------------------
include/block/block-io.h | 15 +++++++++------
2 files changed, 9 insertions(+), 47 deletions(-)
diff --git a/block/io.c b/block/io.c
index 78a289192e..ecd1c2a53c 100644
--- a/block/io.c
+++ b/block/io.c
@@ -1061,14 +1061,6 @@ static int bdrv_check_request32(int64_t offset, int64_t bytes,
return 0;
}
-int bdrv_pwrite_zeroes(BdrvChild *child, int64_t offset,
- int64_t bytes, BdrvRequestFlags flags)
-{
- IO_CODE();
- return bdrv_pwritev(child, offset, bytes, NULL,
- BDRV_REQ_ZERO_WRITE | flags);
-}
-
/*
* Completely zero out a block device with the help of bdrv_pwrite_zeroes.
* The operation is sped up by checking the block status and only writing
@@ -1111,39 +1103,6 @@ int bdrv_make_zero(BdrvChild *child, BdrvRequestFlags flags)
}
}
-/* See bdrv_pwrite() for the return codes */
-int bdrv_pread(BdrvChild *child, int64_t offset, int64_t bytes, void *buf,
- BdrvRequestFlags flags)
-{
- QEMUIOVector qiov = QEMU_IOVEC_INIT_BUF(qiov, buf, bytes);
- IO_CODE();
-
- if (bytes < 0) {
- return -EINVAL;
- }
-
- return bdrv_preadv(child, offset, bytes, &qiov, flags);
-}
-
-/* Return no. of bytes on success or < 0 on error. Important errors are:
- -EIO generic I/O error (may happen for all errors)
- -ENOMEDIUM No media inserted.
- -EINVAL Invalid offset or number of bytes
- -EACCES Trying to write a read-only device
-*/
-int bdrv_pwrite(BdrvChild *child, int64_t offset, int64_t bytes,
- const void *buf, BdrvRequestFlags flags)
-{
- QEMUIOVector qiov = QEMU_IOVEC_INIT_BUF(qiov, buf, bytes);
- IO_CODE();
-
- if (bytes < 0) {
- return -EINVAL;
- }
-
- return bdrv_pwritev(child, offset, bytes, &qiov, flags);
-}
-
/*
* Writes to the file and ensures that no writes are reordered across this
* request (acts as a barrier)
diff --git a/include/block/block-io.h b/include/block/block-io.h
index 879221cebe..c81739ad16 100644
--- a/include/block/block-io.h
+++ b/include/block/block-io.h
@@ -39,13 +39,16 @@
* to catch when they are accidentally called by the wrong API.
*/
-int bdrv_pwrite_zeroes(BdrvChild *child, int64_t offset,
- int64_t bytes, BdrvRequestFlags flags);
+int generated_co_wrapper bdrv_pwrite_zeroes(BdrvChild *child, int64_t offset,
+ int64_t bytes,
+ BdrvRequestFlags flags);
int bdrv_make_zero(BdrvChild *child, BdrvRequestFlags flags);
-int bdrv_pread(BdrvChild *child, int64_t offset, int64_t bytes, void *buf,
- BdrvRequestFlags flags);
-int bdrv_pwrite(BdrvChild *child, int64_t offset, int64_t bytes,
- const void *buf, BdrvRequestFlags flags);
+int generated_co_wrapper bdrv_pread(BdrvChild *child, int64_t offset,
+ int64_t bytes, void *buf,
+ BdrvRequestFlags flags);
+int generated_co_wrapper bdrv_pwrite(BdrvChild *child, int64_t offset,
+ int64_t bytes, const void *buf,
+ BdrvRequestFlags flags);
int bdrv_pwrite_sync(BdrvChild *child, int64_t offset, int64_t bytes,
const void *buf, BdrvRequestFlags flags);
/*
--
2.35.3
^ permalink raw reply related [flat|nested] 18+ messages in thread
* [PATCH v2 08/10] block: Add bdrv_co_pwrite_sync()
2022-05-13 15:54 [PATCH v2 00/10] Implement bdrv_{pread, pwrite, pwrite_sync, pwrite_zeroes}() using generated_co_wrapper Alberto Faria
` (6 preceding siblings ...)
2022-05-13 15:57 ` [PATCH v2 07/10] block: Implement bdrv_{pread, pwrite, pwrite_zeroes}() using generated_co_wrapper Alberto Faria
@ 2022-05-13 15:57 ` Alberto Faria
2022-05-17 14:35 ` Eric Blake
2022-05-13 15:57 ` [PATCH v2 09/10] block: Use bdrv_co_pwrite_sync() when caller is coroutine_fn Alberto Faria
2022-05-13 15:57 ` [PATCH v2 10/10] block/qcow2: Use bdrv_pwrite_sync() in qcow2_mark_dirty() Alberto Faria
9 siblings, 1 reply; 18+ messages in thread
From: Alberto Faria @ 2022-05-13 15:57 UTC (permalink / raw)
To: qemu-devel
Cc: qemu-block, Alberto Faria, Stefan Hajnoczi, Fam Zheng,
Kevin Wolf, Hanna Reitz
Also convert bdrv_pwrite_sync() to being implemented using
generated_co_wrapper.
Signed-off-by: Alberto Faria <afaria@redhat.com>
---
block/io.c | 9 +++++----
include/block/block-io.h | 8 ++++++--
2 files changed, 11 insertions(+), 6 deletions(-)
diff --git a/block/io.c b/block/io.c
index ecd1c2a53c..b2e35dbe23 100644
--- a/block/io.c
+++ b/block/io.c
@@ -1109,18 +1109,19 @@ int bdrv_make_zero(BdrvChild *child, BdrvRequestFlags flags)
*
* Returns 0 on success, -errno in error cases.
*/
-int bdrv_pwrite_sync(BdrvChild *child, int64_t offset, int64_t bytes,
- const void *buf, BdrvRequestFlags flags)
+int coroutine_fn bdrv_co_pwrite_sync(BdrvChild *child, int64_t offset,
+ int64_t bytes, const void *buf,
+ BdrvRequestFlags flags)
{
int ret;
IO_CODE();
- ret = bdrv_pwrite(child, offset, bytes, buf, flags);
+ ret = bdrv_co_pwrite(child, offset, bytes, buf, flags);
if (ret < 0) {
return ret;
}
- ret = bdrv_flush(child->bs);
+ ret = bdrv_co_flush(child->bs);
if (ret < 0) {
return ret;
}
diff --git a/include/block/block-io.h b/include/block/block-io.h
index c81739ad16..ae90d1e588 100644
--- a/include/block/block-io.h
+++ b/include/block/block-io.h
@@ -49,8 +49,12 @@ int generated_co_wrapper bdrv_pread(BdrvChild *child, int64_t offset,
int generated_co_wrapper bdrv_pwrite(BdrvChild *child, int64_t offset,
int64_t bytes, const void *buf,
BdrvRequestFlags flags);
-int bdrv_pwrite_sync(BdrvChild *child, int64_t offset, int64_t bytes,
- const void *buf, BdrvRequestFlags flags);
+int generated_co_wrapper bdrv_pwrite_sync(BdrvChild *child, int64_t offset,
+ int64_t bytes, const void *buf,
+ BdrvRequestFlags flags);
+int coroutine_fn bdrv_co_pwrite_sync(BdrvChild *child, int64_t offset,
+ int64_t bytes, const void *buf,
+ BdrvRequestFlags flags);
/*
* Efficiently zero a region of the disk image. Note that this is a regular
* I/O request like read or write and should have a reasonable size. This
--
2.35.3
^ permalink raw reply related [flat|nested] 18+ messages in thread
* [PATCH v2 09/10] block: Use bdrv_co_pwrite_sync() when caller is coroutine_fn
2022-05-13 15:54 [PATCH v2 00/10] Implement bdrv_{pread, pwrite, pwrite_sync, pwrite_zeroes}() using generated_co_wrapper Alberto Faria
` (7 preceding siblings ...)
2022-05-13 15:57 ` [PATCH v2 08/10] block: Add bdrv_co_pwrite_sync() Alberto Faria
@ 2022-05-13 15:57 ` Alberto Faria
2022-05-17 9:29 ` Vladimir Sementsov-Ogievskiy
2022-05-13 15:57 ` [PATCH v2 10/10] block/qcow2: Use bdrv_pwrite_sync() in qcow2_mark_dirty() Alberto Faria
9 siblings, 1 reply; 18+ messages in thread
From: Alberto Faria @ 2022-05-13 15:57 UTC (permalink / raw)
To: qemu-devel
Cc: qemu-block, Alberto Faria, Stefan Hajnoczi, Denis V. Lunev,
Vladimir Sementsov-Ogievskiy, Kevin Wolf, Hanna Reitz
Convert uses of bdrv_pwrite_sync() into bdrv_co_pwrite_sync() when the
callers are already coroutine_fn.
Signed-off-by: Alberto Faria <afaria@redhat.com>
---
block/parallels.c | 2 +-
block/qcow2-snapshot.c | 6 +++---
block/qcow2.c | 4 ++--
3 files changed, 6 insertions(+), 6 deletions(-)
diff --git a/block/parallels.c b/block/parallels.c
index f22444efff..8b23b9580d 100644
--- a/block/parallels.c
+++ b/block/parallels.c
@@ -481,7 +481,7 @@ static int coroutine_fn parallels_co_check(BlockDriverState *bs,
ret = 0;
if (flush_bat) {
- ret = bdrv_pwrite_sync(bs->file, 0, s->header_size, s->header, 0);
+ ret = bdrv_co_pwrite_sync(bs->file, 0, s->header_size, s->header, 0);
if (ret < 0) {
res->check_errors++;
goto out;
diff --git a/block/qcow2-snapshot.c b/block/qcow2-snapshot.c
index 60e0461632..d1d46facbf 100644
--- a/block/qcow2-snapshot.c
+++ b/block/qcow2-snapshot.c
@@ -512,9 +512,9 @@ int coroutine_fn qcow2_check_read_snapshot_table(BlockDriverState *bs,
assert(fix & BDRV_FIX_ERRORS);
snapshot_table_pointer.nb_snapshots = cpu_to_be32(s->nb_snapshots);
- ret = bdrv_pwrite_sync(bs->file, offsetof(QCowHeader, nb_snapshots),
- sizeof(snapshot_table_pointer.nb_snapshots),
- &snapshot_table_pointer.nb_snapshots, 0);
+ ret = bdrv_co_pwrite_sync(bs->file, offsetof(QCowHeader, nb_snapshots),
+ sizeof(snapshot_table_pointer.nb_snapshots),
+ &snapshot_table_pointer.nb_snapshots, 0);
if (ret < 0) {
result->check_errors++;
fprintf(stderr, "ERROR failed to update the snapshot count in the "
diff --git a/block/qcow2.c b/block/qcow2.c
index c43238a006..f2fb54c51f 100644
--- a/block/qcow2.c
+++ b/block/qcow2.c
@@ -4551,8 +4551,8 @@ static int coroutine_fn qcow2_co_truncate(BlockDriverState *bs, int64_t offset,
/* write updated header.size */
offset = cpu_to_be64(offset);
- ret = bdrv_pwrite_sync(bs->file, offsetof(QCowHeader, size),
- sizeof(offset), &offset, 0);
+ ret = bdrv_co_pwrite_sync(bs->file, offsetof(QCowHeader, size),
+ sizeof(offset), &offset, 0);
if (ret < 0) {
error_setg_errno(errp, -ret, "Failed to update the image size");
goto fail;
--
2.35.3
^ permalink raw reply related [flat|nested] 18+ messages in thread
* [PATCH v2 10/10] block/qcow2: Use bdrv_pwrite_sync() in qcow2_mark_dirty()
2022-05-13 15:54 [PATCH v2 00/10] Implement bdrv_{pread, pwrite, pwrite_sync, pwrite_zeroes}() using generated_co_wrapper Alberto Faria
` (8 preceding siblings ...)
2022-05-13 15:57 ` [PATCH v2 09/10] block: Use bdrv_co_pwrite_sync() when caller is coroutine_fn Alberto Faria
@ 2022-05-13 15:57 ` Alberto Faria
2022-05-17 14:36 ` Eric Blake
9 siblings, 1 reply; 18+ messages in thread
From: Alberto Faria @ 2022-05-13 15:57 UTC (permalink / raw)
To: qemu-devel; +Cc: qemu-block, Alberto Faria, Kevin Wolf, Hanna Reitz
Use bdrv_pwrite_sync() instead of calling bdrv_pwrite() and bdrv_flush()
separately.
Signed-off-by: Alberto Faria <afaria@redhat.com>
---
block/qcow2.c | 9 +++------
1 file changed, 3 insertions(+), 6 deletions(-)
diff --git a/block/qcow2.c b/block/qcow2.c
index f2fb54c51f..90a2dd406b 100644
--- a/block/qcow2.c
+++ b/block/qcow2.c
@@ -516,12 +516,9 @@ int qcow2_mark_dirty(BlockDriverState *bs)
}
val = cpu_to_be64(s->incompatible_features | QCOW2_INCOMPAT_DIRTY);
- ret = bdrv_pwrite(bs->file, offsetof(QCowHeader, incompatible_features),
- sizeof(val), &val, 0);
- if (ret < 0) {
- return ret;
- }
- ret = bdrv_flush(bs->file->bs);
+ ret = bdrv_pwrite_sync(bs->file,
+ offsetof(QCowHeader, incompatible_features),
+ sizeof(val), &val, 0);
if (ret < 0) {
return ret;
}
--
2.35.3
^ permalink raw reply related [flat|nested] 18+ messages in thread
* Re: [PATCH v2 09/10] block: Use bdrv_co_pwrite_sync() when caller is coroutine_fn
2022-05-13 15:57 ` [PATCH v2 09/10] block: Use bdrv_co_pwrite_sync() when caller is coroutine_fn Alberto Faria
@ 2022-05-17 9:29 ` Vladimir Sementsov-Ogievskiy
0 siblings, 0 replies; 18+ messages in thread
From: Vladimir Sementsov-Ogievskiy @ 2022-05-17 9:29 UTC (permalink / raw)
To: Alberto Faria, qemu-devel
Cc: qemu-block, Stefan Hajnoczi, Denis V. Lunev, Kevin Wolf, Hanna Reitz
13.05.2022 18:57, Alberto Faria wrote:
> Convert uses of bdrv_pwrite_sync() into bdrv_co_pwrite_sync() when the
> callers are already coroutine_fn.
>
> Signed-off-by: Alberto Faria<afaria@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <v.sementsov-og@mail.ru>
--
Best regards,
Vladimir
^ permalink raw reply [flat|nested] 18+ messages in thread
* Re: [PATCH v2 04/10] crypto: Make block callbacks return 0 on success
2022-05-13 15:57 ` [PATCH v2 04/10] crypto: Make block callbacks " Alberto Faria
@ 2022-05-17 14:26 ` Eric Blake
0 siblings, 0 replies; 18+ messages in thread
From: Eric Blake @ 2022-05-17 14:26 UTC (permalink / raw)
To: Alberto Faria
Cc: qemu-devel, qemu-block, Kevin Wolf, Hanna Reitz, Daniel P. Berrangé
On Fri, May 13, 2022 at 04:57:43PM +0100, Alberto Faria wrote:
> They currently return the value of their headerlen/buflen parameter on
> success. Returning 0 instead makes it clear that short reads/writes are
> not possible.
>
> Signed-off-by: Alberto Faria <afaria@redhat.com>
> ---
> block/crypto.c | 52 +++++++++++++++++-----------------
> block/qcow2.c | 22 +++++++-------
> crypto/block-luks.c | 8 +++---
> crypto/block.c | 6 ++--
> include/crypto/block.h | 32 ++++++++++-----------
> tests/unit/test-crypto-block.c | 38 ++++++++++++-------------
> 6 files changed, 79 insertions(+), 79 deletions(-)
>
Reviewed-by: Eric Blake <eblake@redhat.com>
--
Eric Blake, Principal Software Engineer
Red Hat, Inc. +1-919-301-3266
Virtualization: qemu.org | libvirt.org
^ permalink raw reply [flat|nested] 18+ messages in thread
* Re: [PATCH v2 06/10] block: Make 'bytes' param of bdrv_co_{pread, pwrite, preadv, pwritev}() an int64_t
2022-05-13 15:57 ` [PATCH v2 06/10] block: Make 'bytes' param of bdrv_co_{pread, pwrite, preadv, pwritev}() an int64_t Alberto Faria
@ 2022-05-17 14:32 ` Eric Blake
2022-05-17 14:48 ` Alberto Faria
0 siblings, 1 reply; 18+ messages in thread
From: Eric Blake @ 2022-05-17 14:32 UTC (permalink / raw)
To: Alberto Faria
Cc: qemu-devel, qemu-block, Paolo Bonzini, Kevin Wolf, Hanna Reitz
On Fri, May 13, 2022 at 04:57:45PM +0100, Alberto Faria wrote:
> For consistency with other I/O functions, and in preparation to
> implement bdrv_{pread,pwrite}() using generated_co_wrapper.
>
> unsigned int fits in int64_t, so all callers remain correct.
However, future callers that pass in something larger than unsigned int...
> +++ b/include/block/block_int-io.h
> @@ -56,7 +56,7 @@ int coroutine_fn bdrv_co_pwritev_part(BdrvChild *child,
> QEMUIOVector *qiov, size_t qiov_offset, BdrvRequestFlags flags);
>
> static inline int coroutine_fn bdrv_co_pread(BdrvChild *child,
> - int64_t offset, unsigned int bytes, void *buf, BdrvRequestFlags flags)
> + int64_t offset, int64_t bytes, void *buf, BdrvRequestFlags flags)
> {
> QEMUIOVector qiov = QEMU_IOVEC_INIT_BUF(qiov, buf, bytes);
...now end up calling QEMU_IOVEC_INIT_BUF() which tries to do
.local_iov.iov_len = bytes, which can silently overflow on 32-bit
platforms where iov_len is size_t. We need to add a code guard that
callers do not pass in too large of a buffer.
> IO_CODE();
> @@ -65,7 +65,7 @@ static inline int coroutine_fn bdrv_co_pread(BdrvChild *child,
> }
>
> static inline int coroutine_fn bdrv_co_pwrite(BdrvChild *child,
> - int64_t offset, unsigned int bytes, const void *buf, BdrvRequestFlags flags)
> + int64_t offset, int64_t bytes, const void *buf, BdrvRequestFlags flags)
> {
> QEMUIOVector qiov = QEMU_IOVEC_INIT_BUF(qiov, buf, bytes);
Here as well.
--
Eric Blake, Principal Software Engineer
Red Hat, Inc. +1-919-301-3266
Virtualization: qemu.org | libvirt.org
^ permalink raw reply [flat|nested] 18+ messages in thread
* Re: [PATCH v2 08/10] block: Add bdrv_co_pwrite_sync()
2022-05-13 15:57 ` [PATCH v2 08/10] block: Add bdrv_co_pwrite_sync() Alberto Faria
@ 2022-05-17 14:35 ` Eric Blake
0 siblings, 0 replies; 18+ messages in thread
From: Eric Blake @ 2022-05-17 14:35 UTC (permalink / raw)
To: Alberto Faria
Cc: qemu-devel, qemu-block, Stefan Hajnoczi, Fam Zheng, Kevin Wolf,
Hanna Reitz
On Fri, May 13, 2022 at 04:57:47PM +0100, Alberto Faria wrote:
> Also convert bdrv_pwrite_sync() to being implemented using
> generated_co_wrapper.
>
> Signed-off-by: Alberto Faria <afaria@redhat.com>
> ---
> block/io.c | 9 +++++----
> include/block/block-io.h | 8 ++++++--
> 2 files changed, 11 insertions(+), 6 deletions(-)
Reviewed-by: Eric Blake <eblake@redhat.com>
--
Eric Blake, Principal Software Engineer
Red Hat, Inc. +1-919-301-3266
Virtualization: qemu.org | libvirt.org
^ permalink raw reply [flat|nested] 18+ messages in thread
* Re: [PATCH v2 10/10] block/qcow2: Use bdrv_pwrite_sync() in qcow2_mark_dirty()
2022-05-13 15:57 ` [PATCH v2 10/10] block/qcow2: Use bdrv_pwrite_sync() in qcow2_mark_dirty() Alberto Faria
@ 2022-05-17 14:36 ` Eric Blake
0 siblings, 0 replies; 18+ messages in thread
From: Eric Blake @ 2022-05-17 14:36 UTC (permalink / raw)
To: Alberto Faria; +Cc: qemu-devel, qemu-block, Kevin Wolf, Hanna Reitz
On Fri, May 13, 2022 at 04:57:49PM +0100, Alberto Faria wrote:
> Use bdrv_pwrite_sync() instead of calling bdrv_pwrite() and bdrv_flush()
> separately.
>
> Signed-off-by: Alberto Faria <afaria@redhat.com>
> ---
> block/qcow2.c | 9 +++------
> 1 file changed, 3 insertions(+), 6 deletions(-)
Reviewed-by: Eric Blake <eblake@redhat.com>
--
Eric Blake, Principal Software Engineer
Red Hat, Inc. +1-919-301-3266
Virtualization: qemu.org | libvirt.org
^ permalink raw reply [flat|nested] 18+ messages in thread
* Re: [PATCH v2 06/10] block: Make 'bytes' param of bdrv_co_{pread, pwrite, preadv, pwritev}() an int64_t
2022-05-17 14:32 ` Eric Blake
@ 2022-05-17 14:48 ` Alberto Faria
2022-05-18 12:48 ` Eric Blake
0 siblings, 1 reply; 18+ messages in thread
From: Alberto Faria @ 2022-05-17 14:48 UTC (permalink / raw)
To: Eric Blake; +Cc: qemu-devel, qemu-block, Paolo Bonzini, Kevin Wolf, Hanna Reitz
On Tue, May 17, 2022 at 3:33 PM Eric Blake <eblake@redhat.com> wrote:
> ...now end up calling QEMU_IOVEC_INIT_BUF() which tries to do
> .local_iov.iov_len = bytes, which can silently overflow on 32-bit
> platforms where iov_len is size_t. We need to add a code guard that
> callers do not pass in too large of a buffer.
I see. blk_co_pread() and blk_co_pwrite() use assert(bytes <=
SIZE_MAX). Would that be an appropriate safeguard here? Or should we
return an error?
Alberto
^ permalink raw reply [flat|nested] 18+ messages in thread
* Re: [PATCH v2 06/10] block: Make 'bytes' param of bdrv_co_{pread, pwrite, preadv, pwritev}() an int64_t
2022-05-17 14:48 ` Alberto Faria
@ 2022-05-18 12:48 ` Eric Blake
0 siblings, 0 replies; 18+ messages in thread
From: Eric Blake @ 2022-05-18 12:48 UTC (permalink / raw)
To: Alberto Faria
Cc: qemu-devel, qemu-block, Paolo Bonzini, Kevin Wolf, Hanna Reitz
On Tue, May 17, 2022 at 03:48:59PM +0100, Alberto Faria wrote:
> On Tue, May 17, 2022 at 3:33 PM Eric Blake <eblake@redhat.com> wrote:
> > ...now end up calling QEMU_IOVEC_INIT_BUF() which tries to do
> > .local_iov.iov_len = bytes, which can silently overflow on 32-bit
> > platforms where iov_len is size_t. We need to add a code guard that
> > callers do not pass in too large of a buffer.
>
> I see. blk_co_pread() and blk_co_pwrite() use assert(bytes <=
> SIZE_MAX). Would that be an appropriate safeguard here? Or should we
> return an error?
I'd be okay with the assert.
--
Eric Blake, Principal Software Engineer
Red Hat, Inc. +1-919-301-3266
Virtualization: qemu.org | libvirt.org
^ permalink raw reply [flat|nested] 18+ messages in thread
end of thread, other threads:[~2022-05-18 12:57 UTC | newest]
Thread overview: 18+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2022-05-13 15:54 [PATCH v2 00/10] Implement bdrv_{pread, pwrite, pwrite_sync, pwrite_zeroes}() using generated_co_wrapper Alberto Faria
2022-05-13 15:54 ` [PATCH v2 01/10] block: Add a 'flags' param to bdrv_{pread, pwrite, pwrite_sync}() Alberto Faria
2022-05-13 15:54 ` [PATCH v2 02/10] block: Change bdrv_{pread, pwrite, pwrite_sync}() param order Alberto Faria
2022-05-13 15:57 ` [PATCH v2 03/10] block: Make bdrv_{pread, pwrite}() return 0 on success Alberto Faria
2022-05-13 15:57 ` [PATCH v2 04/10] crypto: Make block callbacks " Alberto Faria
2022-05-17 14:26 ` Eric Blake
2022-05-13 15:57 ` [PATCH v2 05/10] block: Make bdrv_co_pwrite() take a const buffer Alberto Faria
2022-05-13 15:57 ` [PATCH v2 06/10] block: Make 'bytes' param of bdrv_co_{pread, pwrite, preadv, pwritev}() an int64_t Alberto Faria
2022-05-17 14:32 ` Eric Blake
2022-05-17 14:48 ` Alberto Faria
2022-05-18 12:48 ` Eric Blake
2022-05-13 15:57 ` [PATCH v2 07/10] block: Implement bdrv_{pread, pwrite, pwrite_zeroes}() using generated_co_wrapper Alberto Faria
2022-05-13 15:57 ` [PATCH v2 08/10] block: Add bdrv_co_pwrite_sync() Alberto Faria
2022-05-17 14:35 ` Eric Blake
2022-05-13 15:57 ` [PATCH v2 09/10] block: Use bdrv_co_pwrite_sync() when caller is coroutine_fn Alberto Faria
2022-05-17 9:29 ` Vladimir Sementsov-Ogievskiy
2022-05-13 15:57 ` [PATCH v2 10/10] block/qcow2: Use bdrv_pwrite_sync() in qcow2_mark_dirty() Alberto Faria
2022-05-17 14:36 ` Eric Blake
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