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block: introduce BlockDriver.bdrv_needs_filename to enable some drivers.

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Some drivers will have driver specifics options but no filename.
This new bool allow the block layer to treat them correctly.

The .bdrv_needs_filename is set in drivers not having .bdrv_parse_filename and
not having .bdrv_open.

The first exception to this rule will be the quorum driver.

Signed-off-by: Benoit Canet <benoit@irqsave.net>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Benoît Canet 2013-09-24 17:07:04 +02:00 • committed by Kevin Wolf
parent 2fe2e29071
commit 030be32184
8 changed files with 24 additions and 2 deletions
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5
block/raw-posix.c
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@ -1200,6 +1200,7 @@ static BlockDriver bdrv_file = {
.format_name = "file",
.protocol_name = "file",
.instance_size = sizeof(BDRVRawState),
.bdrv_needs_filename = true,
.bdrv_probe = NULL, /* no probe for protocols */
.bdrv_file_open = raw_open,
.bdrv_reopen_prepare = raw_reopen_prepare,
@ -1542,6 +1543,7 @@ static BlockDriver bdrv_host_device = {
.format_name = "host_device",
.protocol_name = "host_device",
.instance_size = sizeof(BDRVRawState),
.bdrv_needs_filename = true,
.bdrv_probe_device = hdev_probe_device,
.bdrv_file_open = hdev_open,
.bdrv_close = raw_close,
@ -1667,6 +1669,7 @@ static BlockDriver bdrv_host_floppy = {
.format_name = "host_floppy",
.protocol_name = "host_floppy",
.instance_size = sizeof(BDRVRawState),
.bdrv_needs_filename = true,
.bdrv_probe_device = floppy_probe_device,
.bdrv_file_open = floppy_open,
.bdrv_close = raw_close,
@ -1769,6 +1772,7 @@ static BlockDriver bdrv_host_cdrom = {
.format_name = "host_cdrom",
.protocol_name = "host_cdrom",
.instance_size = sizeof(BDRVRawState),
.bdrv_needs_filename = true,
.bdrv_probe_device = cdrom_probe_device,
.bdrv_file_open = cdrom_open,
.bdrv_close = raw_close,
@ -1890,6 +1894,7 @@ static BlockDriver bdrv_host_cdrom = {
.format_name = "host_cdrom",
.protocol_name = "host_cdrom",
.instance_size = sizeof(BDRVRawState),
.bdrv_needs_filename = true,
.bdrv_probe_device = cdrom_probe_device,
.bdrv_file_open = cdrom_open,
.bdrv_close = raw_close,