Commit Graph

77266 Commits

Author SHA1 Message Date
Richard Henderson
5da2d2d8e5 softfloat: Inline float32 compare specializations
Replace the float32 compare specializations with inline functions
that call the standard float32_compare{,_quiet} functions.
Use bool as the return type.

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2020-05-19 08:42:26 -07:00
Richard Henderson
71bfd65c5f softfloat: Name compare relation enum
Give the previously unnamed enum a typedef name.  Use it in the
prototypes of compare functions.  Use it to hold the results
of the compare functions.

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2020-05-19 08:41:45 -07:00
Richard Henderson
3dede407cc softfloat: Name rounding mode enum
Give the previously unnamed enum a typedef name.  Use the packed
attribute so that we do not affect the layout of the float_status
struct.  Use it in the prototypes of relevant functions.

Adjust switch statements as necessary to avoid compiler warnings.

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2020-05-19 08:41:26 -07:00
Richard Henderson
a828b373bd softfloat: Change tininess_before_rounding to bool
Slightly tidies the usage within softfloat.c and the
representation in float_status.

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2020-05-19 08:41:16 -07:00
Richard Henderson
c120391c00 softfloat: Replace flag with bool
We have had this on the to-do list for quite some time.

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2020-05-19 08:40:50 -07:00
Richard Henderson
b240c9c497 softfloat: Use post test for floatN_mul
The existing f{32,64}_addsub_post test, which checks for zero
inputs, is identical to f{32,64}_mul_fast_test.  Which means
we can eliminate the fast_test/fast_op hooks in favor of
reusing the same post hook.

This means we have one fewer test along the fast path for multiply.

Tested-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2020-05-19 08:40:33 -07:00
Eric Blake
bb4e58c613 blockdev: Split off basic bitmap operations for qemu-img
Upcoming patches want to add some basic bitmap manipulation abilities
to qemu-img.  But blockdev.o is too heavyweight to link into qemu-img
(among other things, it would drag in block jobs and transaction
support - qemu-img does offline manipulation, where atomicity is less
important because there are no concurrent modifications to compete
with), so it's time to split off the bare bones of what we will need
into a new file block/monitor/bitmap-qmp-cmds.o.

This is sufficient to expose 6 QMP commands for use by qemu-img (add,
remove, clear, enable, disable, merge), as well as move the three
helper functions touched in the previous patch.  Regarding
MAINTAINERS, the new file is automatically part of block core, but
also makes sense as related to other dirty bitmap files.

Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Message-Id: <20200513011648.166876-6-eblake@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
2020-05-19 10:32:14 -05:00
Eric Blake
c6996cf9a6 blockdev: Promote several bitmap functions to non-static
The next patch will split blockdev.c, which will require accessing
some previously-static functions from more than one .c file.  But part
of promoting a function to public is picking a naming scheme that does
not reek of exposing too many internals (two of the three functions
were named starting with 'do_').  To make future code motion easier,
perform the function rename and non-static promotion into its own
patch.

Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Message-Id: <20200513011648.166876-5-eblake@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
2020-05-19 10:32:14 -05:00
Eric Blake
ef893b5c84 block: Make it easier to learn which BDS support bitmaps
Upcoming patches will enhance bitmap support in qemu-img, but in doing
so, it turns out to be nice to suppress output when persistent bitmaps
make no sense (such as on a qcow2 v2 image).  Add a hook to make this
easier to query.

This patch adds a new callback .bdrv_supports_persistent_dirty_bitmap,
rather than trying to shoehorn the answer in via existing callbacks.
In particular, while it might have been possible to overload
.bdrv_co_can_store_new_dirty_bitmap to special-case a NULL input to
answer whether any persistent bitmaps are supported, that is at odds
with whether a particular bitmap can be stored (for example, even on
an image that supports persistent bitmaps but has currently filled up
the maximum number of bitmaps, attempts to store another one should
fail); and the new functionality doesn't require coroutine safety.
Similarly, we could have added one more piece of information to
.bdrv_get_info, but then again, most callers to that function tend to
already discard extraneous information, and making it a catch-all
rather than a series of dedicated scalar queries hasn't really
simplified life.

In the future, when we improve the ability to look up bitmaps through
a filter, we will probably also want to teach the block layer to
automatically let filters pass this request on through.

Signed-off-by: Eric Blake <eblake@redhat.com>
Message-Id: <20200513011648.166876-4-eblake@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
2020-05-19 10:32:14 -05:00
Eric Blake
0562adf517 qemu-img: Fix stale comments on doc location
Missed in commit e13c59fa.

Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Message-Id: <20200513011648.166876-3-eblake@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
2020-05-19 10:32:14 -05:00
Eric Blake
6edb788f29 docs: Sort sections on qemu-img subcommand parameters
We already list the subcommand summaries alphabetically, we should do
the same for the documentation related to subcommand-specific
parameters.

Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Message-Id: <20200513011648.166876-2-eblake@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
2020-05-19 10:32:14 -05:00
Eric Blake
edb0590403 bitmaps: Update maintainer
Dirty bitmaps are important to incremental backups, including exposure
over NBD where I'm already maintainer.  Also, I'm aware that lately I
have been doing as much code/review on bitmaps as John Snow who is
trying to scale back in order to focus elsewhere; and many of the
recent patches have come from Vladimir, who is also interested in
taking on maintainer duties, but would like to start with
co-maintainership.  Therefore, it's time to revamp the ownership of
this category, as agreed between the three of us.

Signed-off-by: Eric Blake <eblake@redhat.com>
Message-Id: <20200514180003.325406-1-eblake@redhat.com>
Acked-by: John Snow <jsnow@redhat.com>
Reviewed-by: John Snow <jsnow@redhat.com>
2020-05-19 10:32:14 -05:00
Peter Maydell
f2465433b4 Pull request
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Merge remote-tracking branch 'remotes/stefanha/tags/block-pull-request' into staging

Pull request

# gpg: Signature made Tue 19 May 2020 09:00:32 BST
# gpg:                using RSA key 8695A8BFD3F97CDAAC35775A9CA4ABB381AB73C8
# gpg: Good signature from "Stefan Hajnoczi <stefanha@redhat.com>" [full]
# gpg:                 aka "Stefan Hajnoczi <stefanha@gmail.com>" [full]
# Primary key fingerprint: 8695 A8BF D3F9 7CDA AC35  775A 9CA4 ABB3 81AB 73C8

* remotes/stefanha/tags/block-pull-request:
  aio-posix: disable fdmon-io_uring when GSource is used
  aio-posix: don't duplicate fd handler deletion in fdmon_io_uring_destroy()
  tests/fuzz: Extract ioport_fuzz_qtest() method
  tests/fuzz: Extract pciconfig_fuzz_qos() method
  tests/fuzz: Remove unuseful/unused typedefs
  tests/fuzz: Add missing space in test description
  Makefile: List fuzz targets in 'make help'
  tests/fuzz/Makefile: Do not link code using unavailable devices

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2020-05-19 13:42:58 +01:00
Peter Maydell
bffe88d139 Block layer patches:
- Introduce real BdrvChildRole
 - blk/bdrv_make_empty() functions instead of calling callbacks directly
 - mirror: Make sure that source and target size match
 - block-copy: Fix uninitialized variable
 - block/replication: Avoid cancelling the job twice
 - ahci: Log lost IRQs
 - iotests: Run pylint and mypy in a testcase
 - iotests: log messages from notrun()
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Merge remote-tracking branch 'remotes/kevin/tags/for-upstream' into staging

Block layer patches:

- Introduce real BdrvChildRole
- blk/bdrv_make_empty() functions instead of calling callbacks directly
- mirror: Make sure that source and target size match
- block-copy: Fix uninitialized variable
- block/replication: Avoid cancelling the job twice
- ahci: Log lost IRQs
- iotests: Run pylint and mypy in a testcase
- iotests: log messages from notrun()

# gpg: Signature made Mon 18 May 2020 18:05:32 BST
# gpg:                using RSA key DC3DEB159A9AF95D3D7456FE7F09B272C88F2FD6
# gpg:                issuer "kwolf@redhat.com"
# gpg: Good signature from "Kevin Wolf <kwolf@redhat.com>" [full]
# Primary key fingerprint: DC3D EB15 9A9A F95D 3D74  56FE 7F09 B272 C88F 2FD6

* remotes/kevin/tags/for-upstream: (52 commits)
  hw: Use QEMU_IS_ALIGNED() on parallel flash block size
  iotests/030: Reduce run time by unthrottling job earlier
  hw/ide/ahci: Log lost IRQs
  iotests: log messages from notrun()
  block/block-copy: Simplify block_copy_do_copy()
  block/block-copy: Fix uninitialized variable in block_copy_task_entry
  block: Drop @child_class from bdrv_child_perm()
  block: Pass BdrvChildRole in remaining cases
  block: Drop child_file
  block: Drop bdrv_format_default_perms()
  block: Make bdrv_filter_default_perms() static
  block: Use bdrv_default_perms()
  tests: Use child_of_bds instead of child_file
  block: Use child_of_bds in remaining places
  block: Make filter drivers use child_of_bds
  block: Make format drivers use child_of_bds
  block: Drop child_backing
  block: Make backing files child_of_bds children
  block: Drop child_format
  block: Switch child_format users to child_of_bds
  ...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2020-05-19 11:58:56 +01:00
Volker Rümelin
7b23d121f9 ui: increase min required GTK version to 3.22.0
Based on a mail on the qemu-devel mailing list at
https://lists.nongnu.org/archive/html/qemu-devel/2020-05/msg02909.html
and some internet research the GTK3 versions on supported
platforms are:

    RHEL-7.4: 3.22.10
    RHEL-7.5: 3.22.26
    Debian (Stretch): 3.22.11
    Debian (Buster): 3.24.5
    OpenBSD (Ports): 3.22.30
    FreeBSD (Ports): 3.22.29
    OpenSUSE Leap 15: 3.22.30
    SLE12-SP2: Unknown
    SLE15: 3.22.30
    Ubuntu (Bionic): 3.22.30
    Ubuntu (Focal): 3.24.18
    macOS (Homebrew): 3.22.30

This justifies increasing the minimum required GTK version in
QEMU to 3.22.0.

Signed-off-by: Volker Rümelin <vr_qemu@t-online.de>
Message-id: 20200516072014.7766-11-vr_qemu@t-online.de
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2020-05-19 09:06:44 +02:00
Volker Rümelin
1454192746 ui/gtk: use native keyboard scancodes on Windows
Since GTK 3.22 the function gdk_event_get_scancode() is
available. On Windows this function returns keyboard scancodes
and some extended flags. These raw keyboard scancodes are much
better suited for this use case than the half-cooked win32
virtual-key codes because scancodes report the key position on
the keyboard and the positions are independent of national
language settings.

Signed-off-by: Volker Rümelin <vr_qemu@t-online.de>
Message-id: 20200516072014.7766-10-vr_qemu@t-online.de
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2020-05-19 09:06:44 +02:00
Volker Rümelin
d3953bf797 ui/gtk: don't pass on win keys without keyboard grab
Without keyboard grab Windows currently handles the two win keys
and the key events are also sent to the guest. This is undesir-
able. Only one program should handle key events. This patch ap-
plies commit c68f74b02e "win32: do not handle win keys when the
keyboard is not grabbed" from project spice-gtk to ui/gtk.c to
fix this problem.

Signed-off-by: Volker Rümelin <vr_qemu@t-online.de>
Message-id: 20200516072014.7766-9-vr_qemu@t-online.de
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2020-05-19 09:06:44 +02:00
Volker Rümelin
20a37f2fa3 ui/sdl2-input: use trace-events to debug key events
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Volker Rümelin <vr_qemu@t-online.de>
Message-id: 20200516072014.7766-8-vr_qemu@t-online.de
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2020-05-19 09:06:44 +02:00
Volker Rümelin
7dafc6793a ui/sdl2: start in full screen with grab enabled
QEMU with SDL 1.2 display used to enable keyboard and mouse grab-
bing when started in full screen. The SDL 2.0 code tries to do
the same but fails to enable grabbing because sdl_grab_start(0)
returns early. To do it's work the sdl_grab_start() function
needs a pointer to a sdl2_console structure.

Signed-off-by: Volker Rümelin <vr_qemu@t-online.de>
Message-id: 20200516072014.7766-7-vr_qemu@t-online.de
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2020-05-19 09:06:44 +02:00
Volker Rümelin
830473455f ui/sdl2: fix handling of AltGr key on Windows
Wire up the keyboard hooking code on Windows to fix the AltGr
key and improve keyboard grabbing.

Signed-off-by: Volker Rümelin <vr_qemu@t-online.de>
Message-id: 20200516072014.7766-6-vr_qemu@t-online.de
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2020-05-19 09:06:44 +02:00
Volker Rümelin
fd7c1bea17 ui/gtk: remove unused variable ignore_keys
Since the removal of GTK2 code in commit 89d85cde75 the code
around ignore_keys is unused. See commit 1a01716a30 "gtk: Avoid
accel key leakage into guest on console switch" why it was only
needed for GTK2.

Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Volker Rümelin <vr_qemu@t-online.de>
Message-id: 20200516072014.7766-5-vr_qemu@t-online.de
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2020-05-19 09:06:44 +02:00
Volker Rümelin
9ef99eccb1 ui/gtk: remove unused code
This code was last used before commit 2ec78706d1 "ui: convert
GTK and SDL1 frontends to keycodemapdb".

Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Volker Rümelin <vr_qemu@t-online.de>
Message-id: 20200516072014.7766-4-vr_qemu@t-online.de
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2020-05-19 09:06:44 +02:00
Volker Rümelin
0c4b1a7dc5 ui/gkt: release all keys on grab-broken-event
There is no way to grab the Ctrl-Alt-Del key combination on
Windows. This key combination will leave all three keys in a
stuck condition. This patch uses the grab-broken-event to
release the keys.

Signed-off-by: Volker Rümelin <vr_qemu@t-online.de>
Message-id: 20200516072014.7766-3-vr_qemu@t-online.de
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2020-05-19 09:06:44 +02:00
Volker Rümelin
bd593d2cd9 ui/gtk: fix handling of AltGr key on Windows
Wire up the keyboard hooking code on Windows to fix the AltGr
key and improve keyboard grabbing.

Signed-off-by: Volker Rümelin <vr_qemu@t-online.de>
Message-id: 20200516072014.7766-2-vr_qemu@t-online.de
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2020-05-19 09:06:44 +02:00
Volker Rümelin
2df9f5718d ui/win32-kbd-hook: handle AltGr in a hook procedure
Import win32 keyboard hooking code from project spice-gtk. This
patch removes the extra left control key up/down input events
inserted by Windows for the right alt key up/down input events
with international keyboard layouts. Additionally there's some
code to grab the keyboard.

The next patches will use this code.

Only Windows needs this.

Signed-off-by: Volker Rümelin <vr_qemu@t-online.de>
Message-id: 20200516072014.7766-1-vr_qemu@t-online.de
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2020-05-19 09:06:44 +02:00
Peter Maydell
a89af8c20a nbd patches for 2020-05-20
- fix stranded fd in 'qemu-nbd -c /dev/nbd0'
 - add 'qemu-img map --start-offset --max-length' options
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Merge remote-tracking branch 'remotes/ericb/tags/pull-nbd-2020-05-18' into staging

nbd patches for 2020-05-20

- fix stranded fd in 'qemu-nbd -c /dev/nbd0'
- add 'qemu-img map --start-offset --max-length' options

# gpg: Signature made Mon 18 May 2020 17:29:56 BST
# gpg:                using RSA key 71C2CC22B1C4602927D2F3AAA7A16B4A2527436A
# gpg: Good signature from "Eric Blake <eblake@redhat.com>" [full]
# gpg:                 aka "Eric Blake (Free Software Programmer) <ebb9@byu.net>" [full]
# gpg:                 aka "[jpeg image of size 6874]" [full]
# Primary key fingerprint: 71C2 CC22 B1C4 6029 27D2  F3AA A7A1 6B4A 2527 436A

* remotes/ericb/tags/pull-nbd-2020-05-18:
  iotests: Enhance 223 to cover qemu-img map improvements
  qemu-img: Add --start-offset and --max-length to map
  qemu-img: refactor dump_map_entry JSON format output
  qemu-img: validate image length in img_map
  qemu_img: add cvtnum_full to print error reports
  qemu-nbd: Close inherited stderr

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2020-05-18 20:04:54 +01:00
Stefan Hajnoczi
ba607ca8bf aio-posix: disable fdmon-io_uring when GSource is used
The glib event loop does not call fdmon_io_uring_wait() so fd handlers
waiting to be submitted build up in the list. There is no benefit is
using io_uring when the glib GSource is being used, so disable it
instead of implementing a more complex fix.

This fixes a memory leak where AioHandlers would build up and increasing
amounts of CPU time were spent iterating them in aio_pending(). The
symptom is that guests become slow when QEMU is built with io_uring
support.

Buglink: https://bugs.launchpad.net/qemu/+bug/1877716
Fixes: 73fd282e7b ("aio-posix: add io_uring fd monitoring implementation")
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Tested-by: Oleksandr Natalenko <oleksandr@redhat.com>
Message-id: 20200511183630.279750-3-stefanha@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2020-05-18 18:16:00 +01:00
Stefan Hajnoczi
de137e44f7 aio-posix: don't duplicate fd handler deletion in fdmon_io_uring_destroy()
The io_uring file descriptor monitoring implementation has an internal
list of fd handlers that are pending submission to io_uring.
fdmon_io_uring_destroy() deletes all fd handlers on the list.

Don't delete fd handlers directly in fdmon_io_uring_destroy() for two
reasons:
1. This duplicates the aio-posix.c AioHandler deletion code and could
   become outdated if the struct changes.
2. Only handlers with the FDMON_IO_URING_REMOVE flag set are safe to
   remove. If the flag is not set then something still has a pointer to
   the fd handler. Let aio-posix.c and its user worry about that. In
   practice this isn't an issue because fdmon_io_uring_destroy() is only
   called when shutting down so all users have removed their fd
   handlers, but the next patch will need this!

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Tested-by: Oleksandr Natalenko <oleksandr@redhat.com>
Message-id: 20200511183630.279750-2-stefanha@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2020-05-18 18:16:00 +01:00
Philippe Mathieu-Daudé
4cdd0a774d hw: Use QEMU_IS_ALIGNED() on parallel flash block size
Use the QEMU_IS_ALIGNED() macro to verify the flash block size
is properly aligned. It is quicker to process when reviewing.

Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20200511205246.24621-1-philmd@redhat.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2020-05-18 19:05:25 +02:00
Kevin Wolf
b1b30ff4df iotests/030: Reduce run time by unthrottling job earlier
test_overlapping_3() throttles its active commit job so it can be sure
the job is still busy when it checks that you can't start a conflicting
streaming job.

However, it only sets the commit job back to full speed when it is
ready, which takes a few seconds while it's throttled. We can already
reset the limit after having checked that block-stream returns an error
and save these seconds.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Message-Id: <20200513100025.33543-1-kwolf@redhat.com>
Reviewed-by: Alberto Garcia <berto@igalia.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2020-05-18 19:05:25 +02:00
Philippe Mathieu-Daudé
c5f12a80c6 hw/ide/ahci: Log lost IRQs
One might find interesting to look at AHCI IRQs.

Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20200504094858.5975-1-f4bug@amsat.org>
Reviewed-by: John Snow <jsnow@redhat.com>
Acked-by: John Snow <jsnow@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2020-05-18 19:05:25 +02:00
John Snow
44a46a9cd9 iotests: log messages from notrun()
Shift the logging initialization up to occur prior to validation checks,
so that notrun() messages still get printed to console.

(Also, remove the "debugging messages active" message, because we don't
need to see that hundreds of times per iotest suite run.)

Signed-off-by: John Snow <jsnow@redhat.com>
Message-Id: <20200514201614.19941-2-jsnow@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2020-05-18 19:05:25 +02:00
Philippe Mathieu-Daudé
d7eca54222 block/block-copy: Simplify block_copy_do_copy()
block_copy_do_copy() is static, only used in block_copy_task_entry
with the error_is_read argument set. No need to check for it,
simplify.

Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20200507121129.29760-3-philmd@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2020-05-18 19:05:25 +02:00
Philippe Mathieu-Daudé
c78dd00e35 block/block-copy: Fix uninitialized variable in block_copy_task_entry
Fix when building with -Os:

    CC      block/block-copy.o
  block/block-copy.c: In function ‘block_copy_task_entry’:
  block/block-copy.c:428:38: error: ‘error_is_read’ may be used uninitialized in this function [-Werror=maybe-uninitialized]
    428 |         t->call_state->error_is_read = error_is_read;
        |         ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~

Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20200507121129.29760-2-philmd@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2020-05-18 19:05:25 +02:00
Max Reitz
e5d8a40685 block: Drop @child_class from bdrv_child_perm()
Implementations should decide the necessary permissions based on @role.

Signed-off-by: Max Reitz <mreitz@redhat.com>
Message-Id: <20200513110544.176672-35-mreitz@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2020-05-18 19:05:25 +02:00
Max Reitz
1f38f04eac block: Pass BdrvChildRole in remaining cases
These calls have no real use for the child role yet, but it will not
harm to give one.

Notably, the bdrv_root_attach_child() call in blockjob.c is left
unmodified because there is not much the generic BlockJob object wants
from its children.

Signed-off-by: Max Reitz <mreitz@redhat.com>
Message-Id: <20200513110544.176672-34-mreitz@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2020-05-18 19:05:25 +02:00
Max Reitz
f6de853fa3 block: Drop child_file
Signed-off-by: Max Reitz <mreitz@redhat.com>
Message-Id: <20200513110544.176672-33-mreitz@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2020-05-18 19:05:25 +02:00
Max Reitz
9aab945e9c block: Drop bdrv_format_default_perms()
Signed-off-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <20200513110544.176672-32-mreitz@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2020-05-18 19:05:25 +02:00
Max Reitz
87278af1d9 block: Make bdrv_filter_default_perms() static
Signed-off-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <20200513110544.176672-31-mreitz@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2020-05-18 19:05:25 +02:00
Max Reitz
69dca43d6b block: Use bdrv_default_perms()
bdrv_default_perms() can decide which permission profile to use based on
the BdrvChildRole, so block drivers do not need to select it explicitly.

The blkverify driver now no longer shares the WRITE permission for the
image to verify.  We thus have to adjust two places in
test-block-iothread not to take it.  (Note that in theory, blkverify
should behave like quorum in this regard and share neither WRITE nor
RESIZE for both of its children.  In practice, it does not really
matter, because blkverify is used only for debugging, so we might as
well keep its permissions rather liberal.)

Signed-off-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <20200513110544.176672-30-mreitz@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2020-05-18 19:05:25 +02:00
Max Reitz
a16be3cdfc tests: Use child_of_bds instead of child_file
Signed-off-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <20200513110544.176672-29-mreitz@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2020-05-18 19:05:25 +02:00
Max Reitz
58944401d6 block: Use child_of_bds in remaining places
Replace child_file by child_of_bds in all remaining places (excluding
tests).

Signed-off-by: Max Reitz <mreitz@redhat.com>
Message-Id: <20200513110544.176672-28-mreitz@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2020-05-18 19:05:25 +02:00
Max Reitz
b3af2af43b block: Make filter drivers use child_of_bds
Note that some filters have secondary children, namely blkverify (the
image to be verified) and blklogwrites (the log).  This patch does not
touch those children.

Note that for blkverify, the filtered child should not be format-probed.
While there is nothing enforcing this here, in practice, it will not be:
blkverify implements .bdrv_file_open.  The block layer ensures (and in
fact, asserts) that BDRV_O_PROTOCOL is set for every BDS whose driver
implements .bdrv_file_open.  This flag will then be bequeathed to
blkverify's children, and they will thus (by default) not be probed
either.

("By default" refers to the fact that blkverify's other child (the
non-filtered one) will have BDRV_O_PROTOCOL force-unset, because that is
what happens for all non-filtered children of non-format drivers.)

Signed-off-by: Max Reitz <mreitz@redhat.com>
Message-Id: <20200513110544.176672-27-mreitz@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2020-05-18 19:05:25 +02:00
Max Reitz
8b1869daad block: Make format drivers use child_of_bds
Commonly, they need to pass the BDRV_CHILD_IMAGE set as the
BdrvChildRole; but there are exceptions for drivers with external data
files (qcow2 and vmdk).

Signed-off-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <20200513110544.176672-26-mreitz@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2020-05-18 19:05:25 +02:00
Max Reitz
ff3541c4e2 block: Drop child_backing
Signed-off-by: Max Reitz <mreitz@redhat.com>
Message-Id: <20200513110544.176672-25-mreitz@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2020-05-18 19:05:25 +02:00
Max Reitz
25191e5ff0 block: Make backing files child_of_bds children
Make all parents of backing files pass the appropriate BdrvChildRole.
By doing so, we can switch their BdrvChildClass over to the generic
child_of_bds, which will do the right thing when given a correct
BdrvChildRole.

Signed-off-by: Max Reitz <mreitz@redhat.com>
Message-Id: <20200513110544.176672-24-mreitz@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2020-05-18 19:05:25 +02:00
Max Reitz
f34ade1148 block: Drop child_format
Signed-off-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <20200513110544.176672-23-mreitz@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2020-05-18 19:05:25 +02:00
Max Reitz
36ee58d13b block: Switch child_format users to child_of_bds
Both users (quorum and blkverify) use child_format for
not-really-filtered children, so the appropriate BdrvChildRole in both
cases is DATA.  (Note that this will cause bdrv_inherited_options() to
force-allow format probing.)

Signed-off-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <20200513110544.176672-22-mreitz@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2020-05-18 19:05:25 +02:00
Max Reitz
500e243420 raw-format: Split raw_read_options()
Split raw_read_options() into one function that actually just reads the
options, and another that applies them.  This will allow us to detect
whether the user has specified any options before attaching the file
child (so we can decide on its role based on the options).

Signed-off-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <20200513110544.176672-21-mreitz@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2020-05-18 19:05:25 +02:00
Max Reitz
2519f54919 block: Add bdrv_default_perms()
This callback can be used by BDSs that use child_of_bds with the
appropriate BdrvChildRole for their children.

Also, make bdrv_format_default_perms() use it for child_of_bds children
(just a temporary solution until we can drop bdrv_format_default_perms()
altogether).

Signed-off-by: Max Reitz <mreitz@redhat.com>
Message-Id: <20200513110544.176672-20-mreitz@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2020-05-18 19:05:25 +02:00