* [Qemu-devel] [PATCH 1/5] block: Always pass NULL as drv for bdrv_open()
2015-08-26 17:47 [Qemu-devel] [PATCH 0/5] block: Drop drv parameter from bdrv_open() Max Reitz
@ 2015-08-26 17:47 ` Max Reitz
2015-08-27 6:54 ` Alberto Garcia
2015-08-26 17:47 ` [Qemu-devel] [PATCH 2/5] block: Drop drv parameter from bdrv_open() Max Reitz
` (4 subsequent siblings)
5 siblings, 1 reply; 12+ messages in thread
From: Max Reitz @ 2015-08-26 17:47 UTC (permalink / raw)
To: qemu-block; +Cc: Kevin Wolf, Alberto Garcia, qemu-devel, Max Reitz
Change all callers of bdrv_open() to pass the driver name in the options
QDict instead of passing its BlockDriver pointer.
Signed-off-by: Max Reitz <mreitz@redhat.com>
---
block.c | 24 ++++++++++----------
block/qcow2.c | 16 ++++++++-----
block/vvfat.c | 8 +++++--
blockdev.c | 72 +++++++++++++++++++++++------------------------------------
4 files changed, 57 insertions(+), 63 deletions(-)
diff --git a/block.c b/block.c
index d088ee0..193daf9 100644
--- a/block.c
+++ b/block.c
@@ -1385,11 +1385,13 @@ int bdrv_append_temp_snapshot(BlockDriverState *bs, int flags, Error **errp)
qstring_from_str("file"));
qdict_put(snapshot_options, "file.filename",
qstring_from_str(tmp_filename));
+ qdict_put(snapshot_options, "driver",
+ qstring_from_str("qcow2"));
bs_snapshot = bdrv_new();
ret = bdrv_open(&bs_snapshot, NULL, NULL, snapshot_options,
- flags, &bdrv_qcow2, &local_err);
+ flags, NULL, &local_err);
if (ret < 0) {
error_propagate(errp, local_err);
goto out;
@@ -3739,7 +3741,6 @@ void bdrv_img_create(const char *filename, const char *fmt,
const char *backing_fmt, *backing_file;
int64_t size;
BlockDriver *drv, *proto_drv;
- BlockDriver *backing_drv = NULL;
Error *local_err = NULL;
int ret = 0;
@@ -3813,14 +3814,6 @@ void bdrv_img_create(const char *filename, const char *fmt,
}
backing_fmt = qemu_opt_get(opts, BLOCK_OPT_BACKING_FMT);
- if (backing_fmt) {
- backing_drv = bdrv_find_format(backing_fmt);
- if (!backing_drv) {
- error_setg(errp, "Unknown backing file format '%s'",
- backing_fmt);
- goto out;
- }
- }
// The size for the image must always be specified, with one exception:
// If we are using a backing file, we can obtain the size from there
@@ -3831,6 +3824,7 @@ void bdrv_img_create(const char *filename, const char *fmt,
char *full_backing = g_new0(char, PATH_MAX);
int64_t size;
int back_flags;
+ QDict *backing_options = NULL;
bdrv_get_full_backing_filename_from_filename(filename, backing_file,
full_backing, PATH_MAX,
@@ -3844,9 +3838,15 @@ void bdrv_img_create(const char *filename, const char *fmt,
back_flags =
flags & ~(BDRV_O_RDWR | BDRV_O_SNAPSHOT | BDRV_O_NO_BACKING);
+ if (backing_fmt) {
+ backing_options = qdict_new();
+ qdict_put(backing_options, "driver",
+ qstring_from_str(backing_fmt));
+ }
+
bs = NULL;
- ret = bdrv_open(&bs, full_backing, NULL, NULL, back_flags,
- backing_drv, &local_err);
+ ret = bdrv_open(&bs, full_backing, NULL, backing_options,
+ back_flags, NULL, &local_err);
g_free(full_backing);
if (ret < 0) {
goto out;
diff --git a/block/qcow2.c b/block/qcow2.c
index ea34ae2..867b43b 100644
--- a/block/qcow2.c
+++ b/block/qcow2.c
@@ -1873,8 +1873,10 @@ static int qcow2_create2(const char *filename, int64_t total_size,
QemuOpts *opts, int version, int refcount_order,
Error **errp)
{
- /* Calculate cluster_bits */
int cluster_bits;
+ QDict *options;
+
+ /* Calculate cluster_bits */
cluster_bits = ctz32(cluster_size);
if (cluster_bits < MIN_CLUSTER_BITS || cluster_bits > MAX_CLUSTER_BITS ||
(1 << cluster_bits) != cluster_size)
@@ -2032,9 +2034,11 @@ static int qcow2_create2(const char *filename, int64_t total_size,
* refcount of the cluster that is occupied by the header and the refcount
* table)
*/
- ret = bdrv_open(&bs, filename, NULL, NULL,
+ options = qdict_new();
+ qdict_put(options, "driver", qstring_from_str("qcow2"));
+ ret = bdrv_open(&bs, filename, NULL, options,
BDRV_O_RDWR | BDRV_O_CACHE_WB | BDRV_O_NO_FLUSH,
- &bdrv_qcow2, &local_err);
+ NULL, &local_err);
if (ret < 0) {
error_propagate(errp, local_err);
goto out;
@@ -2084,9 +2088,11 @@ static int qcow2_create2(const char *filename, int64_t total_size,
bs = NULL;
/* Reopen the image without BDRV_O_NO_FLUSH to flush it before returning */
- ret = bdrv_open(&bs, filename, NULL, NULL,
+ options = qdict_new();
+ qdict_put(options, "driver", qstring_from_str("qcow2"));
+ ret = bdrv_open(&bs, filename, NULL, options,
BDRV_O_RDWR | BDRV_O_CACHE_WB | BDRV_O_NO_BACKING,
- &bdrv_qcow2, &local_err);
+ NULL, &local_err);
if (local_err) {
error_propagate(errp, local_err);
goto out;
diff --git a/block/vvfat.c b/block/vvfat.c
index 2068697..bffe8ad 100644
--- a/block/vvfat.c
+++ b/block/vvfat.c
@@ -2926,6 +2926,8 @@ static int enable_write_target(BDRVVVFATState *s, Error **errp)
QemuOpts *opts = NULL;
int ret;
int size = sector2cluster(s, s->sector_count);
+ QDict *options;
+
s->used_clusters = calloc(size, 1);
array_init(&(s->commits), sizeof(commit_t));
@@ -2956,9 +2958,11 @@ static int enable_write_target(BDRVVVFATState *s, Error **errp)
}
s->qcow = NULL;
- ret = bdrv_open(&s->qcow, s->qcow_filename, NULL, NULL,
+ options = qdict_new();
+ qdict_put(options, "driver", qstring_from_str("qcow"));
+ ret = bdrv_open(&s->qcow, s->qcow_filename, NULL, options,
BDRV_O_RDWR | BDRV_O_CACHE_WB | BDRV_O_NO_FLUSH,
- bdrv_qcow, errp);
+ NULL, errp);
if (ret < 0) {
goto err;
}
diff --git a/blockdev.c b/blockdev.c
index 62a4586..4528fbe 100644
--- a/blockdev.c
+++ b/blockdev.c
@@ -1416,9 +1416,8 @@ typedef struct ExternalSnapshotState {
static void external_snapshot_prepare(BlkTransactionState *common,
Error **errp)
{
- BlockDriver *drv;
int flags, ret;
- QDict *options = NULL;
+ QDict *options;
Error *local_err = NULL;
bool has_device = false;
const char *device;
@@ -1453,12 +1452,6 @@ static void external_snapshot_prepare(BlkTransactionState *common,
}
/* start processing */
- drv = bdrv_find_format(format);
- if (!drv) {
- error_setg(errp, QERR_INVALID_BLOCK_FORMAT, format);
- return;
- }
-
state->old_bs = bdrv_lookup_bs(has_device ? device : NULL,
has_node_name ? node_name : NULL,
&local_err);
@@ -1517,17 +1510,18 @@ static void external_snapshot_prepare(BlkTransactionState *common,
}
}
+ options = qdict_new();
if (has_snapshot_node_name) {
- options = qdict_new();
qdict_put(options, "node-name",
qstring_from_str(snapshot_node_name));
}
+ qdict_put(options, "driver", qstring_from_str(format));
/* TODO Inherit bs->options or only take explicit options with an
* extended QMP command? */
assert(state->new_bs == NULL);
ret = bdrv_open(&state->new_bs, new_image_file, NULL, options,
- flags | BDRV_O_NO_BACKING, drv, &local_err);
+ flags | BDRV_O_NO_BACKING, NULL, &local_err);
/* We will manually add the backing_hd field to the bs later */
if (ret != 0) {
error_propagate(errp, local_err);
@@ -1889,13 +1883,19 @@ void qmp_block_passwd(bool has_device, const char *device,
/* Assumes AioContext is held */
static void qmp_bdrv_open_encrypted(BlockDriverState *bs, const char *filename,
- int bdrv_flags, BlockDriver *drv,
+ int bdrv_flags, const char *format,
const char *password, Error **errp)
{
Error *local_err = NULL;
+ QDict *options = NULL;
int ret;
- ret = bdrv_open(&bs, filename, NULL, NULL, bdrv_flags, drv, &local_err);
+ if (format) {
+ options = qdict_new();
+ qdict_put(options, "driver", qstring_from_str(format));
+ }
+
+ ret = bdrv_open(&bs, filename, NULL, options, bdrv_flags, NULL, &local_err);
if (ret < 0) {
error_propagate(errp, local_err);
return;
@@ -1910,7 +1910,6 @@ void qmp_change_blockdev(const char *device, const char *filename,
BlockBackend *blk;
BlockDriverState *bs;
AioContext *aio_context;
- BlockDriver *drv = NULL;
int bdrv_flags;
Error *err = NULL;
@@ -1925,14 +1924,6 @@ void qmp_change_blockdev(const char *device, const char *filename,
aio_context = bdrv_get_aio_context(bs);
aio_context_acquire(aio_context);
- if (format) {
- drv = bdrv_find_whitelisted_format(format, bs->read_only);
- if (!drv) {
- error_setg(errp, QERR_INVALID_BLOCK_FORMAT, format);
- goto out;
- }
- }
-
eject_device(blk, 0, &err);
if (err) {
error_propagate(errp, err);
@@ -1942,7 +1933,7 @@ void qmp_change_blockdev(const char *device, const char *filename,
bdrv_flags = bdrv_is_read_only(bs) ? 0 : BDRV_O_RDWR;
bdrv_flags |= bdrv_is_snapshot(bs) ? BDRV_O_SNAPSHOT : 0;
- qmp_bdrv_open_encrypted(bs, filename, bdrv_flags, drv, NULL, errp);
+ qmp_bdrv_open_encrypted(bs, filename, bdrv_flags, format, NULL, errp);
out:
aio_context_release(aio_context);
@@ -2460,7 +2451,7 @@ void qmp_drive_backup(const char *device, const char *target,
BlockDriverState *source = NULL;
BdrvDirtyBitmap *bmap = NULL;
AioContext *aio_context;
- BlockDriver *drv = NULL;
+ QDict *options = NULL;
Error *local_err = NULL;
int flags;
int64_t size;
@@ -2500,13 +2491,6 @@ void qmp_drive_backup(const char *device, const char *target,
if (!has_format) {
format = mode == NEW_IMAGE_MODE_EXISTING ? NULL : bs->drv->format_name;
}
- if (format) {
- drv = bdrv_find_format(format);
- if (!drv) {
- error_setg(errp, QERR_INVALID_BLOCK_FORMAT, format);
- goto out;
- }
- }
/* Early check to avoid creating target */
if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_BACKUP_SOURCE, errp)) {
@@ -2534,7 +2518,7 @@ void qmp_drive_backup(const char *device, const char *target,
}
if (mode != NEW_IMAGE_MODE_EXISTING) {
- assert(format && drv);
+ assert(format);
if (source) {
bdrv_img_create(target, format, source->filename,
source->drv->format_name, NULL,
@@ -2550,8 +2534,13 @@ void qmp_drive_backup(const char *device, const char *target,
goto out;
}
+ if (format) {
+ options = qdict_new();
+ qdict_put(options, "driver", qstring_from_str(format));
+ }
+
target_bs = NULL;
- ret = bdrv_open(&target_bs, target, NULL, NULL, flags, drv, &local_err);
+ ret = bdrv_open(&target_bs, target, NULL, options, flags, NULL, &local_err);
if (ret < 0) {
error_propagate(errp, local_err);
goto out;
@@ -2657,9 +2646,8 @@ void qmp_drive_mirror(const char *device, const char *target,
BlockDriverState *bs;
BlockDriverState *source, *target_bs;
AioContext *aio_context;
- BlockDriver *drv = NULL;
Error *local_err = NULL;
- QDict *options = NULL;
+ QDict *options;
int flags;
int64_t size;
int ret;
@@ -2716,13 +2704,6 @@ void qmp_drive_mirror(const char *device, const char *target,
if (!has_format) {
format = mode == NEW_IMAGE_MODE_EXISTING ? NULL : bs->drv->format_name;
}
- if (format) {
- drv = bdrv_find_format(format);
- if (!drv) {
- error_setg(errp, QERR_INVALID_BLOCK_FORMAT, format);
- goto out;
- }
- }
if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_MIRROR, errp)) {
goto out;
@@ -2777,7 +2758,7 @@ void qmp_drive_mirror(const char *device, const char *target,
&& mode != NEW_IMAGE_MODE_EXISTING)
{
/* create new image w/o backing file */
- assert(format && drv);
+ assert(format);
bdrv_img_create(target, format,
NULL, NULL, NULL, size, flags, &local_err, false);
} else {
@@ -2801,17 +2782,20 @@ void qmp_drive_mirror(const char *device, const char *target,
goto out;
}
+ options = qdict_new();
if (has_node_name) {
- options = qdict_new();
qdict_put(options, "node-name", qstring_from_str(node_name));
}
+ if (format) {
+ qdict_put(options, "driver", qstring_from_str(format));
+ }
/* Mirroring takes care of copy-on-write using the source's backing
* file.
*/
target_bs = NULL;
ret = bdrv_open(&target_bs, target, NULL, options,
- flags | BDRV_O_NO_BACKING, drv, &local_err);
+ flags | BDRV_O_NO_BACKING, NULL, &local_err);
if (ret < 0) {
error_propagate(errp, local_err);
goto out;
--
2.4.6
^ permalink raw reply related [flat|nested] 12+ messages in thread* [Qemu-devel] [PATCH 2/5] block: Drop drv parameter from bdrv_open()
2015-08-26 17:47 [Qemu-devel] [PATCH 0/5] block: Drop drv parameter from bdrv_open() Max Reitz
2015-08-26 17:47 ` [Qemu-devel] [PATCH 1/5] block: Always pass NULL as drv for bdrv_open() Max Reitz
@ 2015-08-26 17:47 ` Max Reitz
2015-08-27 6:55 ` Alberto Garcia
2015-08-26 17:47 ` [Qemu-devel] [PATCH 3/5] block: Drop drv parameter from bdrv_open_inherit() Max Reitz
` (3 subsequent siblings)
5 siblings, 1 reply; 12+ messages in thread
From: Max Reitz @ 2015-08-26 17:47 UTC (permalink / raw)
To: qemu-block; +Cc: Kevin Wolf, Alberto Garcia, qemu-devel, Max Reitz
Now that this parameter is effectively unused, we can drop it and just
pass NULL on to bdrv_open_inherit().
Signed-off-by: Max Reitz <mreitz@redhat.com>
---
block.c | 9 ++++-----
block/block-backend.c | 2 +-
block/parallels.c | 2 +-
block/qcow.c | 2 +-
block/qcow2.c | 6 +++---
block/qed.c | 2 +-
block/sheepdog.c | 5 ++---
block/vdi.c | 2 +-
block/vhdx.c | 2 +-
block/vmdk.c | 7 +++----
block/vpc.c | 2 +-
block/vvfat.c | 2 +-
blockdev.c | 8 ++++----
include/block/block.h | 3 +--
14 files changed, 25 insertions(+), 29 deletions(-)
diff --git a/block.c b/block.c
index 193daf9..ac89487 100644
--- a/block.c
+++ b/block.c
@@ -1391,7 +1391,7 @@ int bdrv_append_temp_snapshot(BlockDriverState *bs, int flags, Error **errp)
bs_snapshot = bdrv_new();
ret = bdrv_open(&bs_snapshot, NULL, NULL, snapshot_options,
- flags, NULL, &local_err);
+ flags, &local_err);
if (ret < 0) {
error_propagate(errp, local_err);
goto out;
@@ -1637,11 +1637,10 @@ close_and_fail:
}
int bdrv_open(BlockDriverState **pbs, const char *filename,
- const char *reference, QDict *options, int flags,
- BlockDriver *drv, Error **errp)
+ const char *reference, QDict *options, int flags, Error **errp)
{
return bdrv_open_inherit(pbs, filename, reference, options, flags, NULL,
- NULL, drv, errp);
+ NULL, NULL, errp);
}
typedef struct BlockReopenQueueEntry {
@@ -3846,7 +3845,7 @@ void bdrv_img_create(const char *filename, const char *fmt,
bs = NULL;
ret = bdrv_open(&bs, full_backing, NULL, backing_options,
- back_flags, NULL, &local_err);
+ back_flags, &local_err);
g_free(full_backing);
if (ret < 0) {
goto out;
diff --git a/block/block-backend.c b/block/block-backend.c
index aee8a12..c2e8732 100644
--- a/block/block-backend.c
+++ b/block/block-backend.c
@@ -126,7 +126,7 @@ BlockBackend *blk_new_open(const char *name, const char *filename,
return NULL;
}
- ret = bdrv_open(&blk->bs, filename, reference, options, flags, NULL, errp);
+ ret = bdrv_open(&blk->bs, filename, reference, options, flags, errp);
if (ret < 0) {
blk_unref(blk);
return NULL;
diff --git a/block/parallels.c b/block/parallels.c
index 046b568..5cd6ec3 100644
--- a/block/parallels.c
+++ b/block/parallels.c
@@ -476,7 +476,7 @@ static int parallels_create(const char *filename, QemuOpts *opts, Error **errp)
file = NULL;
ret = bdrv_open(&file, filename, NULL, NULL,
- BDRV_O_RDWR | BDRV_O_PROTOCOL, NULL, &local_err);
+ BDRV_O_RDWR | BDRV_O_PROTOCOL, &local_err);
if (ret < 0) {
error_propagate(errp, local_err);
return ret;
diff --git a/block/qcow.c b/block/qcow.c
index 01fba54..6e35db1 100644
--- a/block/qcow.c
+++ b/block/qcow.c
@@ -793,7 +793,7 @@ static int qcow_create(const char *filename, QemuOpts *opts, Error **errp)
qcow_bs = NULL;
ret = bdrv_open(&qcow_bs, filename, NULL, NULL,
- BDRV_O_RDWR | BDRV_O_PROTOCOL, NULL, &local_err);
+ BDRV_O_RDWR | BDRV_O_PROTOCOL, &local_err);
if (ret < 0) {
error_propagate(errp, local_err);
goto cleanup;
diff --git a/block/qcow2.c b/block/qcow2.c
index 867b43b..a707d8d 100644
--- a/block/qcow2.c
+++ b/block/qcow2.c
@@ -1975,7 +1975,7 @@ static int qcow2_create2(const char *filename, int64_t total_size,
bs = NULL;
ret = bdrv_open(&bs, filename, NULL, NULL, BDRV_O_RDWR | BDRV_O_PROTOCOL,
- NULL, &local_err);
+ &local_err);
if (ret < 0) {
error_propagate(errp, local_err);
return ret;
@@ -2038,7 +2038,7 @@ static int qcow2_create2(const char *filename, int64_t total_size,
qdict_put(options, "driver", qstring_from_str("qcow2"));
ret = bdrv_open(&bs, filename, NULL, options,
BDRV_O_RDWR | BDRV_O_CACHE_WB | BDRV_O_NO_FLUSH,
- NULL, &local_err);
+ &local_err);
if (ret < 0) {
error_propagate(errp, local_err);
goto out;
@@ -2092,7 +2092,7 @@ static int qcow2_create2(const char *filename, int64_t total_size,
qdict_put(options, "driver", qstring_from_str("qcow2"));
ret = bdrv_open(&bs, filename, NULL, options,
BDRV_O_RDWR | BDRV_O_CACHE_WB | BDRV_O_NO_BACKING,
- NULL, &local_err);
+ &local_err);
if (local_err) {
error_propagate(errp, local_err);
goto out;
diff --git a/block/qed.c b/block/qed.c
index 954ed00..a7ff1d9 100644
--- a/block/qed.c
+++ b/block/qed.c
@@ -583,7 +583,7 @@ static int qed_create(const char *filename, uint32_t cluster_size,
bs = NULL;
ret = bdrv_open(&bs, filename, NULL, NULL,
- BDRV_O_RDWR | BDRV_O_CACHE_WB | BDRV_O_PROTOCOL, NULL,
+ BDRV_O_RDWR | BDRV_O_CACHE_WB | BDRV_O_PROTOCOL,
&local_err);
if (ret < 0) {
error_propagate(errp, local_err);
diff --git a/block/sheepdog.c b/block/sheepdog.c
index 9585beb..67ca788 100644
--- a/block/sheepdog.c
+++ b/block/sheepdog.c
@@ -1554,7 +1554,7 @@ static int sd_prealloc(const char *filename, Error **errp)
int ret;
ret = bdrv_open(&bs, filename, NULL, NULL, BDRV_O_RDWR | BDRV_O_PROTOCOL,
- NULL, errp);
+ errp);
if (ret < 0) {
goto out_with_err_set;
}
@@ -1746,8 +1746,7 @@ static int sd_create(const char *filename, QemuOpts *opts,
}
bs = NULL;
- ret = bdrv_open(&bs, backing_file, NULL, NULL, BDRV_O_PROTOCOL, NULL,
- errp);
+ ret = bdrv_open(&bs, backing_file, NULL, NULL, BDRV_O_PROTOCOL, errp);
if (ret < 0) {
goto out;
}
diff --git a/block/vdi.c b/block/vdi.c
index 7642ef3..062a654 100644
--- a/block/vdi.c
+++ b/block/vdi.c
@@ -764,7 +764,7 @@ static int vdi_create(const char *filename, QemuOpts *opts, Error **errp)
goto exit;
}
ret = bdrv_open(&bs, filename, NULL, NULL, BDRV_O_RDWR | BDRV_O_PROTOCOL,
- NULL, &local_err);
+ &local_err);
if (ret < 0) {
error_propagate(errp, local_err);
goto exit;
diff --git a/block/vhdx.c b/block/vhdx.c
index 0776de7..58f0aae 100644
--- a/block/vhdx.c
+++ b/block/vhdx.c
@@ -1842,7 +1842,7 @@ static int vhdx_create(const char *filename, QemuOpts *opts, Error **errp)
bs = NULL;
ret = bdrv_open(&bs, filename, NULL, NULL, BDRV_O_RDWR | BDRV_O_PROTOCOL,
- NULL, &local_err);
+ &local_err);
if (ret < 0) {
error_propagate(errp, local_err);
goto exit;
diff --git a/block/vmdk.c b/block/vmdk.c
index fbaab67..7bdc3d0 100644
--- a/block/vmdk.c
+++ b/block/vmdk.c
@@ -1632,7 +1632,7 @@ static int vmdk_create_extent(const char *filename, int64_t filesize,
assert(bs == NULL);
ret = bdrv_open(&bs, filename, NULL, NULL, BDRV_O_RDWR | BDRV_O_PROTOCOL,
- NULL, &local_err);
+ &local_err);
if (ret < 0) {
error_propagate(errp, local_err);
goto exit;
@@ -1905,8 +1905,7 @@ static int vmdk_create(const char *filename, QemuOpts *opts, Error **errp)
ret = -ENOENT;
goto exit;
}
- ret = bdrv_open(&bs, full_backing, NULL, NULL, BDRV_O_NO_BACKING, NULL,
- errp);
+ ret = bdrv_open(&bs, full_backing, NULL, NULL, BDRV_O_NO_BACKING, errp);
g_free(full_backing);
if (ret != 0) {
goto exit;
@@ -1977,7 +1976,7 @@ static int vmdk_create(const char *filename, QemuOpts *opts, Error **errp)
}
assert(new_bs == NULL);
ret = bdrv_open(&new_bs, filename, NULL, NULL,
- BDRV_O_RDWR | BDRV_O_PROTOCOL, NULL, &local_err);
+ BDRV_O_RDWR | BDRV_O_PROTOCOL, &local_err);
if (ret < 0) {
error_propagate(errp, local_err);
goto exit;
diff --git a/block/vpc.c b/block/vpc.c
index 3e385d9..2b3b518 100644
--- a/block/vpc.c
+++ b/block/vpc.c
@@ -794,7 +794,7 @@ static int vpc_create(const char *filename, QemuOpts *opts, Error **errp)
goto out;
}
ret = bdrv_open(&bs, filename, NULL, NULL, BDRV_O_RDWR | BDRV_O_PROTOCOL,
- NULL, &local_err);
+ &local_err);
if (ret < 0) {
error_propagate(errp, local_err);
goto out;
diff --git a/block/vvfat.c b/block/vvfat.c
index bffe8ad..7ddc962 100644
--- a/block/vvfat.c
+++ b/block/vvfat.c
@@ -2962,7 +2962,7 @@ static int enable_write_target(BDRVVVFATState *s, Error **errp)
qdict_put(options, "driver", qstring_from_str("qcow"));
ret = bdrv_open(&s->qcow, s->qcow_filename, NULL, options,
BDRV_O_RDWR | BDRV_O_CACHE_WB | BDRV_O_NO_FLUSH,
- NULL, errp);
+ errp);
if (ret < 0) {
goto err;
}
diff --git a/blockdev.c b/blockdev.c
index 4528fbe..801858e 100644
--- a/blockdev.c
+++ b/blockdev.c
@@ -1521,7 +1521,7 @@ static void external_snapshot_prepare(BlkTransactionState *common,
* extended QMP command? */
assert(state->new_bs == NULL);
ret = bdrv_open(&state->new_bs, new_image_file, NULL, options,
- flags | BDRV_O_NO_BACKING, NULL, &local_err);
+ flags | BDRV_O_NO_BACKING, &local_err);
/* We will manually add the backing_hd field to the bs later */
if (ret != 0) {
error_propagate(errp, local_err);
@@ -1895,7 +1895,7 @@ static void qmp_bdrv_open_encrypted(BlockDriverState *bs, const char *filename,
qdict_put(options, "driver", qstring_from_str(format));
}
- ret = bdrv_open(&bs, filename, NULL, options, bdrv_flags, NULL, &local_err);
+ ret = bdrv_open(&bs, filename, NULL, options, bdrv_flags, &local_err);
if (ret < 0) {
error_propagate(errp, local_err);
return;
@@ -2540,7 +2540,7 @@ void qmp_drive_backup(const char *device, const char *target,
}
target_bs = NULL;
- ret = bdrv_open(&target_bs, target, NULL, options, flags, NULL, &local_err);
+ ret = bdrv_open(&target_bs, target, NULL, options, flags, &local_err);
if (ret < 0) {
error_propagate(errp, local_err);
goto out;
@@ -2795,7 +2795,7 @@ void qmp_drive_mirror(const char *device, const char *target,
*/
target_bs = NULL;
ret = bdrv_open(&target_bs, target, NULL, options,
- flags | BDRV_O_NO_BACKING, NULL, &local_err);
+ flags | BDRV_O_NO_BACKING, &local_err);
if (ret < 0) {
error_propagate(errp, local_err);
goto out;
diff --git a/include/block/block.h b/include/block/block.h
index 37916f7..67556c4 100644
--- a/include/block/block.h
+++ b/include/block/block.h
@@ -218,8 +218,7 @@ void bdrv_set_backing_hd(BlockDriverState *bs, BlockDriverState *backing_hd);
int bdrv_open_backing_file(BlockDriverState *bs, QDict *options, Error **errp);
int bdrv_append_temp_snapshot(BlockDriverState *bs, int flags, Error **errp);
int bdrv_open(BlockDriverState **pbs, const char *filename,
- const char *reference, QDict *options, int flags,
- BlockDriver *drv, Error **errp);
+ const char *reference, QDict *options, int flags, Error **errp);
BlockReopenQueue *bdrv_reopen_queue(BlockReopenQueue *bs_queue,
BlockDriverState *bs, int flags);
int bdrv_reopen_multiple(BlockReopenQueue *bs_queue, Error **errp);
--
2.4.6
^ permalink raw reply related [flat|nested] 12+ messages in thread* [Qemu-devel] [PATCH 3/5] block: Drop drv parameter from bdrv_open_inherit()
2015-08-26 17:47 [Qemu-devel] [PATCH 0/5] block: Drop drv parameter from bdrv_open() Max Reitz
2015-08-26 17:47 ` [Qemu-devel] [PATCH 1/5] block: Always pass NULL as drv for bdrv_open() Max Reitz
2015-08-26 17:47 ` [Qemu-devel] [PATCH 2/5] block: Drop drv parameter from bdrv_open() Max Reitz
@ 2015-08-26 17:47 ` Max Reitz
2015-08-27 6:55 ` Alberto Garcia
2015-08-26 17:47 ` [Qemu-devel] [PATCH 4/5] block: Drop drv parameter from bdrv_fill_options() Max Reitz
` (2 subsequent siblings)
5 siblings, 1 reply; 12+ messages in thread
From: Max Reitz @ 2015-08-26 17:47 UTC (permalink / raw)
To: qemu-block; +Cc: Kevin Wolf, Alberto Garcia, qemu-devel, Max Reitz
Now that this parameter is effectively unused, we can drop it and just
pass NULL to bdrv_fill_options().
Signed-off-by: Max Reitz <mreitz@redhat.com>
---
block.c | 17 +++++++----------
1 file changed, 7 insertions(+), 10 deletions(-)
diff --git a/block.c b/block.c
index ac89487..8aa5f25 100644
--- a/block.c
+++ b/block.c
@@ -85,8 +85,7 @@ static QLIST_HEAD(, BlockDriver) bdrv_drivers =
static int bdrv_open_inherit(BlockDriverState **pbs, const char *filename,
const char *reference, QDict *options, int flags,
BlockDriverState *parent,
- const BdrvChildRole *child_role,
- BlockDriver *drv, Error **errp);
+ const BdrvChildRole *child_role, Error **errp);
static void bdrv_dirty_bitmap_truncate(BlockDriverState *bs);
/* If non-zero, use only whitelisted block drivers */
@@ -1227,8 +1226,7 @@ int bdrv_open_backing_file(BlockDriverState *bs, QDict *options, Error **errp)
assert(bs->backing_hd == NULL);
ret = bdrv_open_inherit(&backing_hd,
*backing_filename ? backing_filename : NULL,
- NULL, options, 0, bs, &child_backing,
- NULL, &local_err);
+ NULL, options, 0, bs, &child_backing, &local_err);
if (ret < 0) {
bdrv_unref(backing_hd);
backing_hd = NULL;
@@ -1291,7 +1289,7 @@ BdrvChild *bdrv_open_child(const char *filename,
bs = NULL;
ret = bdrv_open_inherit(&bs, filename, reference, image_options, 0,
- parent, child_role, NULL, errp);
+ parent, child_role, errp);
if (ret < 0) {
goto done;
}
@@ -1422,11 +1420,11 @@ out:
static int bdrv_open_inherit(BlockDriverState **pbs, const char *filename,
const char *reference, QDict *options, int flags,
BlockDriverState *parent,
- const BdrvChildRole *child_role,
- BlockDriver *drv, Error **errp)
+ const BdrvChildRole *child_role, Error **errp)
{
int ret;
BlockDriverState *file = NULL, *bs;
+ BlockDriver *drv = NULL;
const char *drvname;
Error *local_err = NULL;
int snapshot_flags = 0;
@@ -1476,13 +1474,12 @@ static int bdrv_open_inherit(BlockDriverState **pbs, const char *filename,
flags = child_role->inherit_flags(parent->open_flags);
}
- ret = bdrv_fill_options(&options, &filename, &flags, drv, &local_err);
+ ret = bdrv_fill_options(&options, &filename, &flags, NULL, &local_err);
if (local_err) {
goto fail;
}
/* Find the right image format driver */
- drv = NULL;
drvname = qdict_get_try_str(options, "driver");
if (drvname) {
drv = bdrv_find_format(drvname);
@@ -1640,7 +1637,7 @@ int bdrv_open(BlockDriverState **pbs, const char *filename,
const char *reference, QDict *options, int flags, Error **errp)
{
return bdrv_open_inherit(pbs, filename, reference, options, flags, NULL,
- NULL, NULL, errp);
+ NULL, errp);
}
typedef struct BlockReopenQueueEntry {
--
2.4.6
^ permalink raw reply related [flat|nested] 12+ messages in thread* [Qemu-devel] [PATCH 4/5] block: Drop drv parameter from bdrv_fill_options()
2015-08-26 17:47 [Qemu-devel] [PATCH 0/5] block: Drop drv parameter from bdrv_open() Max Reitz
` (2 preceding siblings ...)
2015-08-26 17:47 ` [Qemu-devel] [PATCH 3/5] block: Drop drv parameter from bdrv_open_inherit() Max Reitz
@ 2015-08-26 17:47 ` Max Reitz
2015-08-27 6:55 ` Alberto Garcia
2015-08-26 17:47 ` [Qemu-devel] [PATCH 5/5] block: Drop bdrv_find_whitelisted_format() Max Reitz
2015-09-07 10:25 ` [Qemu-devel] [PATCH 0/5] block: Drop drv parameter from bdrv_open() Kevin Wolf
5 siblings, 1 reply; 12+ messages in thread
From: Max Reitz @ 2015-08-26 17:47 UTC (permalink / raw)
To: qemu-block; +Cc: Kevin Wolf, Alberto Garcia, qemu-devel, Max Reitz
Now that this parameter is effectively unused, we can drop it and change
the function accordingly.
Signed-off-by: Max Reitz <mreitz@redhat.com>
---
block.c | 59 ++++++++++++++++++++++-------------------------------------
1 file changed, 22 insertions(+), 37 deletions(-)
diff --git a/block.c b/block.c
index 8aa5f25..434f43c 100644
--- a/block.c
+++ b/block.c
@@ -996,13 +996,13 @@ static QDict *parse_json_filename(const char *filename, Error **errp)
* block driver has been specified explicitly.
*/
static int bdrv_fill_options(QDict **options, const char **pfilename,
- int *flags, BlockDriver *drv, Error **errp)
+ int *flags, Error **errp)
{
const char *filename = *pfilename;
const char *drvname;
bool protocol = *flags & BDRV_O_PROTOCOL;
bool parse_filename = false;
- BlockDriver *tmp_drv;
+ BlockDriver *drv = NULL;
Error *local_err = NULL;
/* Parse json: pseudo-protocol */
@@ -1021,15 +1021,15 @@ static int bdrv_fill_options(QDict **options, const char **pfilename,
}
drvname = qdict_get_try_str(*options, "driver");
-
- /* If the user has explicitly specified the driver, this choice should
- * override the BDRV_O_PROTOCOL flag */
- tmp_drv = drv;
- if (!tmp_drv && drvname) {
- tmp_drv = bdrv_find_format(drvname);
- }
- if (tmp_drv) {
- protocol = tmp_drv->bdrv_file_open;
+ if (drvname) {
+ drv = bdrv_find_format(drvname);
+ if (!drv) {
+ error_setg(errp, "Unknown driver '%s'", drvname);
+ return -ENOENT;
+ }
+ /* If the user has explicitly specified the driver, this choice should
+ * override the BDRV_O_PROTOCOL flag */
+ protocol = drv->bdrv_file_open;
}
if (protocol) {
@@ -1053,33 +1053,18 @@ static int bdrv_fill_options(QDict **options, const char **pfilename,
/* Find the right block driver */
filename = qdict_get_try_str(*options, "filename");
- if (drv) {
- if (drvname) {
- error_setg(errp, "Driver specified twice");
- return -EINVAL;
- }
- drvname = drv->format_name;
- qdict_put(*options, "driver", qstring_from_str(drvname));
- } else {
- if (!drvname && protocol) {
- if (filename) {
- drv = bdrv_find_protocol(filename, parse_filename, errp);
- if (!drv) {
- return -EINVAL;
- }
-
- drvname = drv->format_name;
- qdict_put(*options, "driver", qstring_from_str(drvname));
- } else {
- error_setg(errp, "Must specify either driver or file");
- return -EINVAL;
- }
- } else if (drvname) {
- drv = bdrv_find_format(drvname);
+ if (!drvname && protocol) {
+ if (filename) {
+ drv = bdrv_find_protocol(filename, parse_filename, errp);
if (!drv) {
- error_setg(errp, "Unknown driver '%s'", drvname);
- return -ENOENT;
+ return -EINVAL;
}
+
+ drvname = drv->format_name;
+ qdict_put(*options, "driver", qstring_from_str(drvname));
+ } else {
+ error_setg(errp, "Must specify either driver or file");
+ return -EINVAL;
}
}
@@ -1474,7 +1459,7 @@ static int bdrv_open_inherit(BlockDriverState **pbs, const char *filename,
flags = child_role->inherit_flags(parent->open_flags);
}
- ret = bdrv_fill_options(&options, &filename, &flags, NULL, &local_err);
+ ret = bdrv_fill_options(&options, &filename, &flags, &local_err);
if (local_err) {
goto fail;
}
--
2.4.6
^ permalink raw reply related [flat|nested] 12+ messages in thread* [Qemu-devel] [PATCH 5/5] block: Drop bdrv_find_whitelisted_format()
2015-08-26 17:47 [Qemu-devel] [PATCH 0/5] block: Drop drv parameter from bdrv_open() Max Reitz
` (3 preceding siblings ...)
2015-08-26 17:47 ` [Qemu-devel] [PATCH 4/5] block: Drop drv parameter from bdrv_fill_options() Max Reitz
@ 2015-08-26 17:47 ` Max Reitz
2015-08-27 6:56 ` Alberto Garcia
2015-09-07 10:25 ` [Qemu-devel] [PATCH 0/5] block: Drop drv parameter from bdrv_open() Kevin Wolf
5 siblings, 1 reply; 12+ messages in thread
From: Max Reitz @ 2015-08-26 17:47 UTC (permalink / raw)
To: qemu-block; +Cc: Kevin Wolf, Alberto Garcia, qemu-devel, Max Reitz
It is unused by now, so we can drop it.
Signed-off-by: Max Reitz <mreitz@redhat.com>
---
block.c | 7 -------
include/block/block.h | 2 --
2 files changed, 9 deletions(-)
diff --git a/block.c b/block.c
index 434f43c..461eb94 100644
--- a/block.c
+++ b/block.c
@@ -313,13 +313,6 @@ static int bdrv_is_whitelisted(BlockDriver *drv, bool read_only)
return 0;
}
-BlockDriver *bdrv_find_whitelisted_format(const char *format_name,
- bool read_only)
-{
- BlockDriver *drv = bdrv_find_format(format_name);
- return drv && bdrv_is_whitelisted(drv, read_only) ? drv : NULL;
-}
-
typedef struct CreateCo {
BlockDriver *drv;
char *filename;
diff --git a/include/block/block.h b/include/block/block.h
index 67556c4..b075f67 100644
--- a/include/block/block.h
+++ b/include/block/block.h
@@ -193,8 +193,6 @@ BlockDriver *bdrv_find_protocol(const char *filename,
bool allow_protocol_prefix,
Error **errp);
BlockDriver *bdrv_find_format(const char *format_name);
-BlockDriver *bdrv_find_whitelisted_format(const char *format_name,
- bool readonly);
int bdrv_create(BlockDriver *drv, const char* filename,
QemuOpts *opts, Error **errp);
int bdrv_create_file(const char *filename, QemuOpts *opts, Error **errp);
--
2.4.6
^ permalink raw reply related [flat|nested] 12+ messages in thread* Re: [Qemu-devel] [PATCH 0/5] block: Drop drv parameter from bdrv_open()
2015-08-26 17:47 [Qemu-devel] [PATCH 0/5] block: Drop drv parameter from bdrv_open() Max Reitz
` (4 preceding siblings ...)
2015-08-26 17:47 ` [Qemu-devel] [PATCH 5/5] block: Drop bdrv_find_whitelisted_format() Max Reitz
@ 2015-09-07 10:25 ` Kevin Wolf
5 siblings, 0 replies; 12+ messages in thread
From: Kevin Wolf @ 2015-09-07 10:25 UTC (permalink / raw)
To: Max Reitz; +Cc: Alberto Garcia, qemu-devel, qemu-block
Am 26.08.2015 um 19:47 hat Max Reitz geschrieben:
> We don't really need that parameter, so let's drop it. Doing so may even
> fix some bugs, see
> http://lists.nongnu.org/archive/html/qemu-block/2015-08/msg00171.html.
>
> In the course of writing this series, I had to decide whether the make
> sure all callers of bdrv_find_whitelisted_format() would still only
> accept whitelisted formats, which you'd think would be a good idea; but
> the only caller left was qmp_change_blockdev(), so I guess noone really
> cared about it anymore, instead relying on use_bdrv_whitelist alone.
>
> So I decided dropped bdrv_find_whitelisted_format() completely. If you
> feel this is a bad decision, feel free to argue but then I guess we'll
> have to reevaluate all bdrv_find_format() calls whether they should
> actually be bdrv_find_whitelisted_format() calls.
Thanks, applied to the block branch.
Kevin
^ permalink raw reply [flat|nested] 12+ messages in thread