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2019-08-19vdi: Make block_status recurse for fixed imagesMax Reitz1-1/+2
Suggested-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> Fixes: 69f47505ee66afaa513305de0c1895a224e52c45 Signed-off-by: Max Reitz <mreitz@redhat.com> Message-id: 20190725155512.9827-2-mreitz@redhat.com Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> Reviewed-by: John Snow <jsnow@redhat.com> Signed-off-by: Max Reitz <mreitz@redhat.com>
2019-08-19vdi: Fix .bdrv_has_zero_init()Max Reitz1-1/+12
Static VDI images cannot guarantee to be zero-initialized. If the image has been statically allocated, forward the call to the underlying storage node. Reported-by: Stefano Garzarella <sgarzare@redhat.com> Signed-off-by: Max Reitz <mreitz@redhat.com> Reviewed-by: Stefan Weil <sw@weilnetz.de> Acked-by: Stefano Garzarella <sgarzare@redhat.com> Tested-by: Stefano Garzarella <sgarzare@redhat.com> Message-id: 20190724171239.8764-8-mreitz@redhat.com Reviewed-by: Maxim Levitsky <mlevitsk@redhat.com> Signed-off-by: Max Reitz <mreitz@redhat.com>
2019-06-04block: Add BlockBackend.ctxKevin Wolf1-1/+2
This adds a new parameter to blk_new() which requires its callers to declare from which AioContext this BlockBackend is going to be used (or the locks of which AioContext need to be taken anyway). The given context is only stored and kept up to date when changing AioContexts. Actually applying the stored AioContext to the root node is saved for another commit. Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2019-05-10vdi: Replace bdrv_{read,write}() with bdrv_{pread,pwrite}()Alberto Garcia1-6/+9
There's only a couple of bdrv_read() and bdrv_write() calls left in the vdi code, and they can be trivially replaced with the byte-based bdrv_pread() and bdrv_pwrite(). Signed-off-by: Alberto Garcia <berto@igalia.com> Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2019-02-01block: Eliminate the S_1KiB, S_2KiB, ... macrosMarkus Armbruster1-1/+2
We define 54 macros for the powers of two >= 1024. We use six, in six macro definitions. Four of them could just as well use the common MiB macro, so do that. The remaining two can't, because they get passed to stringify. Replace the macro by the literal number there. Slightly harder to read in one instance (1048576 vs. S_1MiB), so add a comment there. The other instance is a wash: 65536 vs S_64KiB. 65536 has been good enough for more than seven years there. This effectively reverts commit 540b8492618 and 1240ac558d3. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Alberto Garcia <berto@igalia.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2019-02-01uuid: Make qemu_uuid_bswap() take and return a QemuUUIDPeter Maydell1-8/+8
Currently qemu_uuid_bswap() takes a pointer to the QemuUUID to be byte-swapped. This means it can't be used when the UUID to be swapped is in a packed member of a struct. It's also out of line with the general bswap*() functions we provide in bswap.h, which take the value to be swapped and return it. Make qemu_uuid_bswap() take a QemuUUID and return the swapped version. This fixes some clang warnings about taking the address of a packed struct member in block/vdi.c. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2019-02-01block/vdi: Don't take address of fields in packed structsPeter Maydell1-13/+25
Taking the address of a field in a packed struct is a bad idea, because it might not be actually aligned enough for that pointer type (and thus cause a crash on dereference on some host architectures). Newer versions of clang warn about this. Instead of passing UUID related functions the address of a possibly unaligned QemuUUID struct, use local variables and then copy to/from the struct field as appropriate. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2018-11-05vdi: Use a literal number of bytes for DEFAULT_CLUSTER_SIZELeonid Bloch1-2/+2
If an expression is used to define DEFAULT_CLUSTER_SIZE, when compiled, it will be embedded as a literal expression in the binary (as the default value) because it is stringified to mark the size of the default value. Now this is fixed by using a defined number to define this value. Signed-off-by: Leonid Bloch <lbloch@janustech.com> Reviewed-by: Stefan Weil <sw@weilnetz.de> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2018-11-05block/vdi: Don't take address of fields in packed structsPeter Maydell1-32/+32
Taking the address of a field in a packed struct is a bad idea, because it might not be actually aligned enough for that pointer type (and thus cause a crash on dereference on some host architectures). Newer versions of clang warn about this. Avoid the bug by not using the "modify in place" byte swapping functions. There are a few places where the in-place swap function is used on something other than a packed struct field; we convert those anyway, for consistency. Patch produced with scripts/coccinelle/inplace-byteswaps.cocci. There are other places where we take the address of a packed member in this file for other purposes than passing it to a byteswap function (all the calls to qemu_uuid_*()); we leave those for now. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2018-07-02vdi: Use definitions from "qemu/units.h"Philippe Mathieu-Daudé1-4/+3
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Reviewed-by: Stefan Weil <sw@weilnetz.de> Message-Id: <20180625124238.25339-3-f4bug@amsat.org> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2018-06-15block: Make remaining uses of qobject input visitor more robustMarkus Armbruster1-2/+6
Remaining uses of qobject_input_visitor_new_keyval() in the block subsystem: * block_crypto_open_opts_init() Currently doesn't visit any non-string scalars, thus safe. It's called from - block_crypto_open_luks() Creates the QDict with qemu_opts_to_qdict_filtered(), which creates only string scalars, but has a TODO asking for other types. - qcow_open() - qcow2_open(), qcow2_co_invalidate_cache(), qcow2_reopen_prepare() * block_crypto_create_opts_init(), called from - block_crypto_co_create_opts_luks() Also creates the QDict with qemu_opts_to_qdict_filtered(). * vdi_co_create_opts() Also creates the QDict with qemu_opts_to_qdict_filtered(). Replace these uses by qobject_input_visitor_new_flat_confused() for robustness. This adds crumpling. Right now, that's a no-op, but if we ever extend these things in non-flat ways, crumpling will be needed. Signed-off-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2018-05-29vdi: Fix vdi_co_do_create() return valueKevin Wolf1-0/+1
.bdrv_co_create() is supposed to return 0 on success, but vdi could return a positive value instead. Fix this. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Max Reitz <mreitz@redhat.com> Reviewed-by: Jeff Cody <jcody@redhat.com>
2018-05-04qobject: Replace qobject_incref/QINCREF qobject_decref/QDECREFMarc-André Lureau1-1/+1
Now that we can safely call QOBJECT() on QObject * as well as its subtypes, we can have macros qobject_ref() / qobject_unref() that work everywhere instead of having to use QINCREF() / QDECREF() for QObject and qobject_incref() / qobject_decref() for its subtypes. The replacement is mechanical, except I broke a long line, and added a cast in monitor_qmp_cleanup_req_queue_locked(). Unlike qobject_decref(), qobject_unref() doesn't accept void *. Note that the new macros evaluate their argument exactly once, thus no need to shout them. Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Message-Id: <20180419150145.24795-4-marcandre.lureau@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> [Rebased, semantic conflict resolved, commit message improved] Signed-off-by: Markus Armbruster <armbru@redhat.com>
2018-03-26vdi: Fix build with CONFIG_VDI_DEBUGKevin Wolf1-12/+10
Use qemu_uuid_unparse() instead of uuid_unparse() to make vdi.c compile again when CONFIG_VDI_DEBUG is set. In order to prevent future bitrot, replace '#ifdef CONFIG_VDI_DEBUG' by 'if (VDI_DEBUG)' so that the compiler always sees the code. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com>
2018-03-26vdi: Change 'static' create option to 'preallocation' in QMPKevin Wolf1-2/+22
What static=on really does is what we call metadata preallocation for other block drivers. While we can still change the QMP interface, make it more consistent by using 'preallocation' for VDI, too. This doesn't implement any new functionality, so the only supported preallocation modes are 'off' and 'metadata' for now. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com>
2018-03-19vdi: Make comments consistent with other driversKevin Wolf1-3/+9
This makes the .bdrv_co_create(_opts) implementation of vdi look more like the other recently converted block drivers. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Max Reitz <mreitz@redhat.com>
2018-03-19vdi: Implement .bdrv_co_createMax Reitz1-5/+19
Signed-off-by: Max Reitz <mreitz@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2018-03-19vdi: Move file creation to vdi_co_create_optsMax Reitz1-18/+28
Signed-off-by: Max Reitz <mreitz@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2018-03-19vdi: Pull option parsing from vdi_co_createMax Reitz1-14/+77
In preparation of QAPI-fying VDI image creation, we have to create a BlockdevCreateOptionsVdi type which is received by a (future) vdi_co_create(). vdi_co_create_opts() now converts the QemuOpts object into such a BlockdevCreateOptionsVdi object. The protocol-layer file is still created in vdi_co_do_create() (and BlockdevCreateOptionsVdi.file is set to an empty string), but that will be addressed by a follow-up patch. Note that cluster-size is not part of the QAPI schema because it is not supported by default. Signed-off-by: Max Reitz <mreitz@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2018-03-09block: convert bdrv_check callback to coroutine_fnPaolo Bonzini1-3/+3
Suggested-by: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Message-Id: <1516279431-30424-8-git-send-email-pbonzini@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2018-03-02block: rename .bdrv_create() to .bdrv_co_create_opts()Stefan Hajnoczi1-2/+3
BlockDriver->bdrv_create() has been called from coroutine context since commit 5b7e1542cfa41a281af9629d31cef03704d976e6 ("block: make bdrv_create adopt coroutine"). Make this explicit by renaming to .bdrv_co_create_opts() and add the coroutine_fn annotation. This makes it obvious to block driver authors that they may yield, use CoMutex, or other coroutine_fn APIs. bdrv_co_create is reserved for the QAPI-based version that Kevin is working on. Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Message-Id: <20170705102231.20711-2-stefanha@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2018-03-02vdi: Switch to .bdrv_co_block_status()Eric Blake1-20/+13
We are gradually moving away from sector-based interfaces, towards byte-based. Update the vdi driver accordingly. Note that the TODO is already covered (the block layer guarantees bounds of its requests), and that we can remove the now-unused s->block_sectors. Signed-off-by: Eric Blake <eblake@redhat.com> Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> Reviewed-by: Fam Zheng <famz@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2018-03-02vdi: Avoid bitrot of debugging codeEric Blake1-3/+9
Rework the debug define so that we always get -Wformat checking, even when debugging is disabled. Signed-off-by: Eric Blake <eblake@redhat.com> Reviewed-by: Stefan Weil <sw@weilnetz.de> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> Reviewed-by: Fam Zheng <famz@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2018-02-09Move include qemu/option.h from qemu-common.h to actual usersMarkus Armbruster1-0/+1
qemu-common.h includes qemu/option.h, but most places that include the former don't actually need the latter. Drop the include, and add it to the places that actually need it. While there, drop superfluous includes of both headers, and separate #include from file comment with a blank line. This cleanup makes the number of objects depending on qemu/option.h drop from 4545 (out of 4743) to 284 in my "build everything" tree. Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-Id: <20180201111846.21846-20-armbru@redhat.com> [Semantic conflict with commit bdd6a90a9e in block/nvme.c resolved]
2017-07-17vdi: make it thread-safePaolo Bonzini1-24/+24
The VirtualBox driver is using a mutex to order all allocating writes, but it is not protecting accesses to the bitmap because they implicitly happen under the AioContext mutex. Change this to use a CoRwlock explicitly. Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Fam Zheng <famz@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Message-Id: <20170629132749.997-4-pbonzini@redhat.com> Signed-off-by: Fam Zheng <famz@redhat.com>
2017-07-11block: Add PreallocMode to blk_truncate()Max Reitz1-1/+2
blk_truncate() itself will pass that value to bdrv_truncate(), and all callers of blk_truncate() just set the parameter to PREALLOC_MODE_OFF for now. Signed-off-by: Max Reitz <mreitz@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Message-id: 20170613202107.10125-4-mreitz@redhat.com Signed-off-by: Max Reitz <mreitz@redhat.com>
2017-05-17migration: Create migration/blocker.hJuan Quintela1-1/+1
This allows us to remove lots of includes of migration/migration.h Signed-off-by: Juan Quintela <quintela@redhat.com> Reviewed-by: Peter Xu <peterx@redhat.com> Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
2017-04-28block: Add errp to b{lk,drv}_truncate()Max Reitz1-2/+2
For one thing, this allows us to drop the error message generation from qemu-img.c and blockdev.c and instead have it unified in bdrv_truncate(). Signed-off-by: Max Reitz <mreitz@redhat.com> Message-id: 20170328205129.15138-3-mreitz@redhat.com Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Max Reitz <mreitz@redhat.com>
2017-02-28block: Add BDRV_O_RESIZE for blk_new_open()Kevin Wolf1-1/+2
blk_new_open() is a convenience function that processes flags rather than QDict options as a simple way to just open an image file. In order to keep it convenient in the future, it must automatically request the necessary permissions. This can easily be inferred from the flags for read and write, but we need another flag that tells us whether to get the resize permission. We can't just always request it because that means that no block jobs can run on the resulting BlockBackend (which is something that e.g. qemu-img commit wants to do), but we also can't request it never because most of the .bdrv_create() implementations call blk_truncate(). The solution is to introduce another flag that is passed by all users that want to resize the image. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Acked-by: Fam Zheng <famz@redhat.com> Reviewed-by: Max Reitz <mreitz@redhat.com>
2017-02-28block: Request child permissions in format driversKevin Wolf1-0/+1
This makes use of the .bdrv_child_perm() implementation for formats that we just added. All format drivers expose the permissions they actually need nows, so that they can be set accordingly and updated when parents are attached or detached. The only format not included here is raw, which was already converted with the other filter drivers. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Max Reitz <mreitz@redhat.com> Acked-by: Fam Zheng <famz@redhat.com>
2017-02-24block: Attach bs->file only during .bdrv_open()Kevin Wolf1-0/+6
The way that attaching bs->file worked was a bit unusual in that it was the only child that would be attached to a node which is not opened yet. Because of this, the block layer couldn't know yet which permissions the driver would eventually need. This patch moves the point where bs->file is attached to the beginning of the individual .bdrv_open() implementations, so drivers already know what they are going to do with the child. This is also more consistent with how driver-specific children work. For a moment, bdrv_open() gets its own BdrvChild to perform image probing, but instead of directly assigning this BdrvChild to the BDS, it becomes a temporary one and the node name is passed as an option to the drivers, so that they can simply use bdrv_open_child() to create another reference for their own use. This duplicated child for (the not opened yet) bs is not the final state, a follow-up patch will change the image probing code to use a BlockBackend, which is completely independent of bs. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Max Reitz <mreitz@redhat.com>
2017-01-24migration: disallow migrate_add_blocker during migrationAshijeet Acharya1-1/+7
If a migration is already in progress and somebody attempts to add a migration blocker, this should rightly fail. Add an errp parameter and a retcode return value to migrate_add_blocker. Signed-off-by: John Snow <jsnow@redhat.com> Signed-off-by: Ashijeet Acharya <ashijeetacharya@gmail.com> Message-Id: <1484566314-3987-5-git-send-email-ashijeetacharya@gmail.com> Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Acked-by: Greg Kurz <groug@kaod.org> Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Merged with recent 'Allow invtsc migration' change
2016-09-23vdi: Use QEMU UUID APIFam Zheng1-56/+17
The UUID operations we need from libuuid are fully supported by QEMU UUID implementation. Use it, and remove the unused code. Signed-off-by: Fam Zheng <famz@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Jeff Cody <jcody@redhat.com> Message-Id: <1474432046-325-5-git-send-email-famz@redhat.com>
2016-07-05block: Convert bdrv_co_preadv/pwritev to BdrvChildKevin Wolf1-2/+2
This is the final patch for converting the common I/O path to take a BdrvChild parameter instead of BlockDriverState. The completion of this conversion means that all users that perform I/O on an image need to actually hold a reference (in the form of BdrvChild, possible as part of a BlockBackend) to that image. This also protects against inconsistent use of BlockBackend vs. BlockDriverState functions because direct use of a BlockDriverState isn't possible any more and blk->root is private for block-backends.c. In addition, we can now distinguish different users in the I/O path, and the future op blockers work is going to add assertions based on permissions stored in BdrvChild. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
2016-07-05block: Convert bdrv_pwrite(v/_sync) to BdrvChildKevin Wolf1-1/+1
Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Max Reitz <mreitz@redhat.com> Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
2016-07-05block: Convert bdrv_write() to BdrvChildKevin Wolf1-2/+2
Signed-off-by: Kevin Wolf <kwolf@redhat.com> Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
2016-07-05block: Convert bdrv_read() to BdrvChildKevin Wolf1-2/+2
Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Max Reitz <mreitz@redhat.com> Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
2016-05-19qemu-common: stop including qemu/bswap.h from qemu-common.hPaolo Bonzini1-0/+1
Move it to the actual users. There are still a few includes of qemu/bswap.h in headers; removing them is left for future work. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-05-12block: Allow BDRV_REQ_FUA through blk_pwrite()Eric Blake1-2/+2
We have several block drivers that understand BDRV_REQ_FUA, and emulate it in the block layer for the rest by a full flush. But without a way to actually request BDRV_REQ_FUA during a pass-through blk_pwrite(), FUA-aware block drivers like NBD are forced to repeat the emulation logic of a full flush regardless of whether the backend they are writing to could do it more efficiently. This patch just wires up a flags argument; followup patches will actually make use of it in the NBD driver and in qemu-io. Signed-off-by: Eric Blake <eblake@redhat.com> Acked-by: Denis V. Lunev <den@openvz.org> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2016-05-12vdi: Implement .bdrv_co_pwritev() interfaceKevin Wolf1-31/+41
Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Fam Zheng <famz@redhat.com>
2016-05-12vdi: Implement .bdrv_co_preadv() interfaceKevin Wolf1-23/+32
Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Fam Zheng <famz@redhat.com>
2016-03-30block: Always set writeback mode in blk_new_open()Kevin Wolf1-2/+1
All callers of blk_new_open() either don't rely on the WCE bit set after blk_new_open() because they explicitly set it anyway, or they pass BDRV_O_CACHE_WB unconditionally. This patch changes blk_new_open() so that it always enables writeback mode and asserts that BDRV_O_CACHE_WB is clear. For those callers that used to pass BDRV_O_CACHE_WB unconditionally, the flag is removed now. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Max Reitz <mreitz@redhat.com>
2016-03-22util: move declarations out of qemu-common.hVeronia Bahaa1-1/+1
Move declarations out of qemu-common.h for functions declared in utils/ files: e.g. include/qemu/path.h for utils/path.c. Move inline functions out of qemu-common.h and into new files (e.g. include/qemu/bcd.h) Signed-off-by: Veronia Bahaa <veroniabahaa@gmail.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-03-22include/qemu/osdep.h: Don't include qapi/error.hMarkus Armbruster1-0/+1
Commit 57cb38b included qapi/error.h into qemu/osdep.h to get the Error typedef. Since then, we've moved to include qemu/osdep.h everywhere. Its file comment explains: "To avoid getting into possible circular include dependencies, this file should not include any other QEMU headers, with the exceptions of config-host.h, compiler.h, os-posix.h and os-win32.h, all of which are doing a similar job to this file and are under similar constraints." qapi/error.h doesn't do a similar job, and it doesn't adhere to similar constraints: it includes qapi-types.h. That's in excess of 100KiB of crap most .c files don't actually need. Add the typedef to qemu/typedefs.h, and include that instead of qapi/error.h. Include qapi/error.h in .c files that need it and don't get it now. Include qapi-types.h in qom/object.h for uint16List. Update scripts/clean-includes accordingly. Update it further to match reality: replace config.h by config-target.h, add sysemu/os-posix.h, sysemu/os-win32.h. Update the list of includes in the qemu/osdep.h comment quoted above similarly. This reduces the number of objects depending on qapi/error.h from "all of them" to less than a third. Unfortunately, the number depending on qapi-types.h shrinks only a little. More work is needed for that one. Signed-off-by: Markus Armbruster <armbru@redhat.com> [Fix compilation without the spice devel packages. - Paolo] Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-03-17blockdev: Split monitor reference from BB creationMax Reitz1-1/+1
Before this patch, blk_new() automatically assigned a name to the new BlockBackend and considered it referenced by the monitor. This patch removes the implicit monitor_add_blk() call from blk_new() (and consequently the monitor_remove_blk() call from blk_delete(), too) and thus blk_new() (and related functions) no longer take a BB name argument. In fact, there is only a single point where blk_new()/blk_new_open() is called and the new BB is monitor-owned, and that is in blockdev_init(). Besides thus relieving us from having to invent names for all of the BBs we use in qemu-img, this fixes a bug where qemu cannot create a new image if there already is a monitor-owned BB named "image". If a BB and its BDS tree are created in a single operation, as of this patch the BDS tree will be created before the BB is given a name (whereas it was the other way around before). This results in minor change to the output of iotest 087, whose reference output is amended accordingly. Signed-off-by: Max Reitz <mreitz@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2016-03-14vdi: Use BB functions in .bdrv_create()Kevin Wolf1-9/+14
All users of the block layers are supposed to go through a BlockBackend. The .bdrv_create() implementation is one such user, so this patch converts it. Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2016-03-14block: Use writeback in .bdrv_create() implementationsKevin Wolf1-1/+2
There's no reason to use a writethrough cache mode while creating an image. Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2016-02-02vdi: Assign bs->file->bs to file in vdi_co_get_block_statusFam Zheng1-0/+1
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Fam Zheng <famz@redhat.com> Message-id: 1453780743-16806-10-git-send-email-famz@redhat.com Signed-off-by: Max Reitz <mreitz@redhat.com>
2016-02-02block: Add "file" output parameter to block status query functionsFam Zheng1-1/+1
The added parameter can be used to return the BDS pointer which the valid offset is referring to. Its value should be ignored unless BDRV_BLOCK_OFFSET_VALID in ret is set. Until block drivers fill in the right value, let's clear it explicitly right before calling .bdrv_get_block_status. The "bs->file" condition in bdrv_co_get_block_status is kept now to keep iotest case 102 passing, and will be fixed once all drivers return the right file pointer. Signed-off-by: Fam Zheng <famz@redhat.com> Message-id: 1453780743-16806-2-git-send-email-famz@redhat.com Reviewed-by: Max Reitz <mreitz@redhat.com> Signed-off-by: Max Reitz <mreitz@redhat.com>
2016-01-20block: Clean up includesPeter Maydell1-0/+1
Clean up includes so that osdep.h is included first and headers which it implies are not included manually. This commit was created with scripts/clean-includes. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>