Commit Graph

525 Commits

Author SHA1 Message Date
Markus Armbruster d1c136885b sheepdog: Fix blockdev-add
Commit 831acdc "sheepdog: Implement bdrv_parse_filename()" and commit
d282f34 "sheepdog: Support blockdev-add" have different ideas on how
the QemuOpts parameters for the server address are named.  Fix that.
While there, rename BlockdevOptionsSheepdog member addr to server, for
consistency with BlockdevOptionsSsh, BlockdevOptionsGluster,
BlockdevOptionsNbd.

Commit 831acdc's example becomes

    --drive driver=sheepdog,server.type=inet,server.host=fido,server.port=7000,vdi=dolly

instead of

    --drive driver=sheepdog,host=fido,vdi=dolly

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Tested-by: Kashyap Chamarthy <kchamart@redhat.com>
Message-id: 1490895797-29094-10-git-send-email-armbru@redhat.com
Signed-off-by: Max Reitz <mreitz@redhat.com>
2017-04-03 17:11:39 +02:00
Markus Armbruster 9445673ea6 nbd: Tidy up blockdev-add interface
SocketAddress is a simple union, and simple unions are awkward: they
have their variant members wrapped in a "data" object on the wire, and
require additional indirections in C.  I intend to limit its use to
existing external interfaces, and convert all internal interfaces to
SocketAddressFlat.

BlockdevOptionsNbd is an external interface using SocketAddress.  We
already use SocketAddressFlat elsewhere in blockdev-add.  Replace it
by SocketAddressFlat while we can (it's new in 2.9) for simplicity and
consistency.  For example,

    { "execute": "blockdev-add",
      "arguments": { "node-name": "foo", "driver": "nbd",
                     "server": { "type": "inet",
		                 "data": { "host": "localhost",
				           "port": "12345" } } } }

becomes

    { "execute": "blockdev-add",
      "arguments": { "node-name": "foo", "driver": "nbd",
                     "server": { "type": "inet",
		                 "host": "localhost", "port": "12345" } } }

Since the internal interfaces still take SocketAddress, this requires
conversion function socket_address_crumple().  It'll go away when I
update the interfaces.

Unfortunately, SocketAddress is also visible in -drive since 2.8:

    -drive if=none,driver=nbd,server.type=inet,server.data.host=127.0.0.1,server.data.port=12345

Nobody should be using it, as it's fairly new and has never been
documented, so adding still more compatibility gunk to keep it working
isn't worth the trouble.  You now have to use

    -drive if=none,driver=nbd,server.type=inet,server.host=127.0.0.1,server.port=12345

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-id: 1490895797-29094-9-git-send-email-armbru@redhat.com

[mreitz: Change iotest 147 accordingly]

Because of this interface change, iotest 147 has to be adapted.
Unfortunately, we cannot just flatten all of the addresses because
nbd-server-start still takes a plain SocketAddress. Therefore, we need
both and this is most easily achieved by writing the SocketAddress into
the code and flattening it where necessary.

Signed-off-by: Max Reitz <mreitz@redhat.com>
Message-id: 20170330221243.17333-1-mreitz@redhat.com

Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Max Reitz <mreitz@redhat.com>
2017-04-03 17:11:39 +02:00
Max Reitz 6b9d62db89 qapi/curl: Extend and fix blockdev-add schema
The curl block driver accepts more options than just "filename"; also,
the URL is actually expected to be passed through the "url" option
instead of "filename".

Signed-off-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Jeff Cody <jcody@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-id: 20170331120431.1767-2-mreitz@redhat.com
Signed-off-by: Jeff Cody <jcody@redhat.com>
2017-03-31 15:52:58 -04:00
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Merge remote-tracking branch 'remotes/cody/tags/block-pull-request' into staging

# gpg: Signature made Tue 28 Mar 2017 15:02:40 BST
# gpg:                using RSA key 0xBDBE7B27C0DE3057
# gpg: Good signature from "Jeffrey Cody <jcody@redhat.com>"
# gpg:                 aka "Jeffrey Cody <jeff@codyprime.org>"
# gpg:                 aka "Jeffrey Cody <codyprime@gmail.com>"
# Primary key fingerprint: 9957 4B4D 3474 90E7 9D98  D624 BDBE 7B27 C0DE 3057

* remotes/cody/tags/block-pull-request:
  rbd: Fix bugs around -drive parameter "server"
  rbd: Revert -blockdev parameter password-secret
  rbd: Revert -blockdev and -drive parameter auth-supported
  rbd: Clean up qemu_rbd_create()'s detour through QemuOpts
  rbd: Clean up runtime_opts, fix -drive to reject filename
  rbd: Don't accept -drive driver=rbd, keyvalue-pairs=...
  rbd: Clean up after the previous commit
  rbd: Don't limit length of parameter values
  rbd: Fix to cleanly reject -drive without pool or image
  rbd: Reject -blockdev server.*.{numeric, to, ipv4, ipv6}

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2017-03-28 15:56:05 +01:00
Markus Armbruster 577d8c9a81 rbd: Revert -blockdev parameter password-secret
This reverts a part of commit 8a47e8e.  We're having second thoughts
on the QAPI schema (and thus the external interface), and haven't
reached consensus, yet.  Issues include:

* BlockdevOptionsRbd member @password-secret isn't actually a
  password, it's a key generated by Ceph.

* We're not sure where member @password-secret belongs (see the
  previous commit).

* How @password-secret interacts with settings from a configuration
  file specified with @conf is undocumented.

Let's avoid painting ourselves into a corner now, and revert the
feature for 2.9.

Note that users can still configure an authentication key with a
configuration file.  They probably do that anyway if they use Ceph
outside QEMU as well.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Jeff Cody <jcody@redhat.com>
Message-id: 1490691368-32099-10-git-send-email-armbru@redhat.com
Signed-off-by: Jeff Cody <jcody@redhat.com>
2017-03-28 10:01:21 -04:00
Markus Armbruster 464444fcc1 rbd: Revert -blockdev and -drive parameter auth-supported
This reverts half of commit 0a55679.  We're having second thoughts on
the QAPI schema (and thus the external interface), and haven't reached
consensus, yet.  Issues include:

* The implementation uses deprecated rados_conf_set() key
  "auth_supported".  No biggie.

* The implementation makes -drive silently ignore invalid parameters
  "auth" and "auth-supported.*.X" where X isn't "auth".  Fixable (in
  fact I'm going to fix similar bugs around parameter server), so
  again no biggie.

* BlockdevOptionsRbd member @password-secret applies only to
  authentication method cephx.  Should it be a variant member of
  RbdAuthMethod?

* BlockdevOptionsRbd member @user could apply to both methods cephx
  and none, but I'm not sure it's actually used with none.  If it
  isn't, should it be a variant member of RbdAuthMethod?

* The client offers a *set* of authentication methods, not a list.
  Should the methods be optional members of BlockdevOptionsRbd instead
  of members of list @auth-supported?  The latter begs the question
  what multiple entries for the same method mean.  Trivial question
  now that RbdAuthMethod contains nothing but @type, but less so when
  RbdAuthMethod acquires other members, such the ones discussed above.

* How BlockdevOptionsRbd member @auth-supported interacts with
  settings from a configuration file specified with @conf is
  undocumented.  I suspect it's untested, too.

Let's avoid painting ourselves into a corner now, and revert the
feature for 2.9.

Note that users can still configure authentication methods with a
configuration file.  They probably do that anyway if they use Ceph
outside QEMU as well.

Further note that this doesn't affect use of key "auth-supported" in
-drive file=rbd:...:key=value.

qemu_rbd_array_opts()'s parameter @type now must be RBD_MON_HOST,
which is silly.  This will be cleaned up shortly.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Jeff Cody <jcody@redhat.com>
Message-id: 1490691368-32099-9-git-send-email-armbru@redhat.com
Signed-off-by: Jeff Cody <jcody@redhat.com>
2017-03-28 10:01:21 -04:00
Markus Armbruster eb87203b64 rbd: Reject -blockdev server.*.{numeric, to, ipv4, ipv6}
We use InetSocketAddress in the QAPI schema.  However, the code
doesn't use inet_connect_saddr(), but formats "host" and "port" into a
configuration string for rados_conf_set().  Thus, members "numeric",
"to", "ipv4" and "ipv6" are silently ignored.  Not nice.  Example:

    -blockdev rbd,node-name=nn,pool=p,image=i,server.0.host=h0,server.0.port=12345,server.0.ipv4=off

Factor a suitable InetSocketAddressBase out of InetSocketAddress, and
use that.  "numeric", "to", "ipv4" and "ipv6" are now rejected.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Jeff Cody <jcody@redhat.com>
Message-id: 1490691368-32099-2-git-send-email-armbru@redhat.com
Signed-off-by: Jeff Cody <jcody@redhat.com>
2017-03-28 09:53:16 -04:00
Markus Armbruster 79b7a77eda block: Declare blockdev-add and blockdev-del supported
It's been a long journey, but here we are.

The supported blockdev-add is not compatible to its experimental
predecessors; bump all Since: tags to 2.9.

x-blockdev-remove-medium, x-blockdev-insert-medium and
x-blockdev-change need a bit more work, so leave them alone for now.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
2017-03-28 15:23:23 +02:00
Eric Blake 21f88d021d qapi: Fix QemuOpts visitor regression on unvisited input
An off-by-one in commit 15c2f669e meant that we were failing to
check for unparsed input in all QemuOpts visitors.  Recent testsuite
additions show that fixing the obvious bug with bogus fields will
also fix the case of an incomplete list visit; update the tests to
match the new behavior.

Simple testcase:

./x86_64-softmmu/qemu-system-x86_64 -nodefaults -nographic -qmp stdio -numa node,size=1g

failed to diagnose that 'size' is not a valid argument to -numa, and
now once again reports:

qemu-system-x86_64: -numa node,size=1g: Invalid parameter 'size'

See also https://bugzilla.redhat.com/show_bug.cgi?id=1434666

CC: qemu-stable@nongnu.org
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Michael Roth <mdroth@linux.vnet.ibm.com>
Tested-by: Laurent Vivier <lvivier@redhat.com>
Message-Id: <20170322144525.18964-4-eblake@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
2017-03-22 19:24:34 +01:00
Markus Armbruster d2788227c6 qapi: Fix string input visitor regression for empty lists
Visiting a list when input is the empty string should result in an
empty list, not an error.  Noticed when commit 3d089ce belatedly added
tests, but simply accepted as weird then.  It's actually a regression:
broken in commit 74f24cb, v2.7.0.  Fix it, and throw in another test
case for empty string.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <1490026424-11330-2-git-send-email-armbru@redhat.com>
Reviewed-by: Michael Roth <mdroth@linux.vnet.ibm.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
2017-03-21 10:43:01 +01:00
Markus Armbruster c2dd311cb7 qapi2texi: Implement boxed argument documentation
This replaces manual references like "For the arguments, see the
documentation of ..." by a generated reference "Arguments: the members
of ...".

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <1489582656-31133-25-git-send-email-armbru@redhat.com>
2017-03-16 07:13:03 +01:00
Markus Armbruster 1d8bda128d qapi: The #optional tag is redundant, drop
We traditionally mark optional members #optional in the doc comment.
Before commit 3313b61, this was entirely manual.

Commit 3313b61 added some automation because its qapi2texi.py relied
on #optional to determine whether a member is optional.  This is no
longer the case since the previous commit: the only thing qapi2texi.py
still does with #optional is stripping it out.  We still reject bogus
qapi-schema.json and six places for qga/qapi-schema.json.

Thus, you can't actually rely on #optional to see whether something is
optional.  Yet we still make people add it manually.  That's just
busy-work.

Drop the code to check, fix up and strip out #optional, along with all
instances of #optional.  To keep it out, add code to reject it, to be
dropped again once the dust settles.

No change to generated documentation.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <1489582656-31133-18-git-send-email-armbru@redhat.com>
2017-03-16 07:13:02 +01:00
Markus Armbruster 8c0aa61318 qapi/rocker: Fix up doc comment notes on optional members
Talking about #optional like this

    # Note: fields are marked #optional to indicate that they may or may
    # not appear ...

doesn't work so well in generated documentation, because the #optional
tag is not visible there.  Replace by

    # Note: optional members may or may not appear ...

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <1489582656-31133-13-git-send-email-armbru@redhat.com>
2017-03-16 07:13:02 +01:00
Eric Blake e32ccbc6e9 block: Drop unmaintained 'archipelago' driver
The driver has failed to build since commit da34e65, in qemu 2.6,
due to a missing include of qapi/error.h for error_setg().
Since no one has complained in three releases, it is easier to
remove the dead code than to keep it around, especially since it
is not being built by default and therefore prone to bitrot.

Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Fam Zheng <famz@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2017-03-13 12:49:33 +01:00
Peter Maydell b64842dee4 Block layer fixes for 2.9.0-rc0
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Merge remote-tracking branch 'remotes/kevin/tags/for-upstream' into staging

Block layer fixes for 2.9.0-rc0

# gpg: Signature made Tue 07 Mar 2017 14:59:18 GMT
# gpg:                using RSA key 0x7F09B272C88F2FD6
# gpg: Good signature from "Kevin Wolf <kwolf@redhat.com>"
# Primary key fingerprint: DC3D EB15 9A9A F95D 3D74  56FE 7F09 B272 C88F 2FD6

* remotes/kevin/tags/for-upstream: (27 commits)
  commit: Don't use error_abort in commit_start
  block: Don't use error_abort in blk_new_open
  sheepdog: Support blockdev-add
  qapi-schema: Rename SocketAddressFlat's variant tcp to inet
  qapi-schema: Rename GlusterServer to SocketAddressFlat
  gluster: Plug memory leaks in qemu_gluster_parse_json()
  gluster: Don't duplicate qapi-util.c's qapi_enum_parse()
  gluster: Drop assumptions on SocketTransport names
  sheepdog: Implement bdrv_parse_filename()
  sheepdog: Use SocketAddress and socket_connect()
  sheepdog: Report errors in pseudo-filename more usefully
  sheepdog: Don't truncate long VDI name in _open(), _create()
  sheepdog: Fix snapshot ID parsing in _open(), _create, _goto()
  sheepdog: Mark sd_snapshot_delete() lossage FIXME
  sheepdog: Fix error handling sd_create()
  sheepdog: Fix error handling in sd_snapshot_delete()
  sheepdog: Defuse time bomb in sd_open() error handling
  block: Fix error handling in bdrv_replace_in_backing_chain()
  block: Handle permission errors in change_parent_backing_link()
  block: Ignore multiple children in bdrv_check_update_perm()
  ...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2017-03-08 09:47:52 +00:00
Markus Armbruster 0b2c1beea4 keyval: Support lists
Additionally permit non-negative integers as key components.  A
dictionary's keys must either be all integers or none.  If all keys
are integers, convert the dictionary to a list.  The set of keys must
be [0,N].

Examples:

* list.1=goner,list.0=null,list.1=eins,list.2=zwei
  is equivalent to JSON [ "null", "eins", "zwei" ]

* a.b.c=1,a.b.0=2
  is inconsistent: a.b.c clashes with a.b.0

* list.0=null,list.2=eins,list.2=zwei
  has a hole: list.1 is missing

Similar design flaw as for objects: there is no way to denote an empty
list.  While interpreting "key absent" as empty list seems natural
(removing a list member from the input string works when there are
multiple ones, so why not when there's just one), it doesn't work:
"key absent" already means "optional list absent", which isn't the
same as "empty list present".

Update the keyval object visitor to use this a.0 syntax in error
messages rather than the usual a[0].

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <1488317230-26248-25-git-send-email-armbru@redhat.com>
[Off-by-one fix squashed in, as per Kevin's review]
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
2017-03-07 16:07:48 +01:00
Markus Armbruster 31478f26ab qapi: Improve how keyval input visitor reports unexpected dicts
Incorrect option

    -blockdev node-name=foo,driver=file,filename=foo.img,aio.unmap=on

is rejected with "Invalid parameter type for 'aio', expected: string".
To make sense of this, you almost have to translate it into the
equivalent QMP command

    { "execute": "blockdev-add", "arguments": { "node-name": "foo", "driver": "file", "filename": "foo.img", "aio": { "unmap": true } } }

Improve the error message to "Parameters 'aio.*' are unexpected".
Take care not to confuse the case "unexpected nested parameters"
(i.e. the object is a QDict or QList) with the case "non-string scalar
parameter".  The latter is a misuse of the visitor, and should perhaps
be an assertion.  Note that test-qobject-input-visitor exercises this
misuse in test_visitor_in_int_keyval(), test_visitor_in_bool_keyval()
and test_visitor_in_number_keyval().

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Message-Id: <1488317230-26248-23-git-send-email-armbru@redhat.com>
2017-03-07 16:07:47 +01:00
Markus Armbruster 9d1eab4b95 qapi: New qobject_input_visitor_new_str() for convenience
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <1488317230-26248-21-git-send-email-armbru@redhat.com>
2017-03-07 16:07:47 +01:00
Markus Armbruster 069b64e3fe qapi: New parse_qapi_name()
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <1488317230-26248-19-git-send-email-armbru@redhat.com>
2017-03-07 16:07:47 +01:00
Markus Armbruster e3934b4297 qapi: Factor out common qobject_input_get_keyval()
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <1488317230-26248-8-git-send-email-armbru@redhat.com>
2017-03-07 16:07:47 +01:00
Markus Armbruster abe81bc21a qapi: Factor out common part of qobject input visitor creation
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Message-Id: <1488317230-26248-7-git-send-email-armbru@redhat.com>
2017-03-07 16:07:46 +01:00
Daniel P. Berrange cbd8acf38f qapi: qobject input visitor variant for use with keyval_parse()
Currently the QObjectInputVisitor assumes that all scalar values are
directly represented as the final types declared by the thing being
visited. i.e. it assumes an 'int' is using QInt, and a 'bool' is using
QBool, etc.  This is good when QObjectInputVisitor is fed a QObject
that came from a JSON document on the QMP monitor, as it will strictly
validate correctness.

To allow QObjectInputVisitor to be reused for visiting a QObject
originating from keyval_parse(), an alternative mode is needed where
all the scalars types are represented as QString and converted on the
fly to the final desired type.

Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Message-Id: <1475246744-29302-8-git-send-email-berrange@redhat.com>

Rebased, conflicts resolved, commit message updated to refer to
keyval_parse().  autocast replaced by keyval in identifiers,
noautocast replaced by fail in tests.

Fix qobject_input_type_uint64_keyval() not to reject '-', for QemuOpts
compatibility: replace parse_uint_full() by open-coded
parse_option_number().  The next commit will add suitable tests.
Leave out the fancy ERANGE error reporting for now, but add a TODO
comment.  Add it qobject_input_type_int64_keyval() and
qobject_input_type_number_keyval(), too.

Open code parse_option_bool() and parse_option_size() so we have to
call qobject_input_get_name() only when actually needed.  Again, leave
out ERANGE error reporting for now.

QAPI/QMP downstream extension prefixes __RFQDN_ don't work, because
keyval_parse() splits them at '.'.  This will be addressed later in
the series.

qobject_input_type_int64_keyval(), qobject_input_type_uint64_keyval(),
qobject_input_type_number_keyval() tweaked for style.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Message-Id: <1488317230-26248-5-git-send-email-armbru@redhat.com>
2017-03-07 16:07:46 +01:00
Markus Armbruster d282f34e82 sheepdog: Support blockdev-add
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2017-03-07 14:53:29 +01:00
Markus Armbruster 2b733709d7 qapi-schema: Rename GlusterServer to SocketAddressFlat
As its documentation says, it's not specific to Gluster.  Rename it,
as I'm going to use it for something else.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2017-03-07 14:53:29 +01:00
Markus Armbruster 1f41a645b6 qapi: Fix object input visit beyond end of list
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <1488544368-30622-28-git-send-email-armbru@redhat.com>
2017-03-05 09:14:20 +01:00
Markus Armbruster a4a1c70dc7 qapi: Make input visitors detect unvisited list tails
Fix the design flaw demonstrated in the previous commit: new method
check_list() lets input visitors report that unvisited input remains
for a list, exactly like check_struct() lets them report that
unvisited input remains for a struct or union.

Implement the method for the qobject input visitor (straightforward),
and the string input visitor (less so, due to the magic list syntax
there).  The opts visitor's list magic is even more impenetrable, and
all I can do there today is a stub with a FIXME comment.  No worse
than before.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <1488544368-30622-26-git-send-email-armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
2017-03-05 09:14:20 +01:00
Markus Armbruster 048abb7b20 qapi: Drop unused non-strict qobject input visitor
The split between tests/test-qobject-input-visitor.c and
tests/test-qobject-input-strict.c now makes less sense than ever.  The
next commit will take care of that.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <1488544368-30622-20-git-send-email-armbru@redhat.com>
2017-03-05 09:14:19 +01:00
Markus Armbruster f332e830e3 qapi: Make string input and opts visitor require non-null input
The string input visitor tries to cope with null input.  Null input
isn't used anywhere, and isn't covered by tests.  Unsurprisingly, it
doesn't fully work: start_list() crashes because it passes the input
via parse_str() to strtoll() unchecked.

Make string_input_visitor_new() assert its argument isn't null, and
drop the code trying to deal with null input.

The opts visitor crashes when you try to actually visit something with
null input.  Make opts_visitor_new() assert its argument isn't null,
mostly for clarity.

qobject_input_visitor_new() already asserts its argument isn't null.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <1488544368-30622-17-git-send-email-armbru@redhat.com>
2017-03-05 09:14:19 +01:00
Markus Armbruster a8aec6de2a qapi: Drop string input visitor method optional()
visit_optional() is to be called only between visit_start_struct() and
visit_end_struct().  Visitors that don't support struct visits,
i.e. don't implement start_struct(), end_struct(), have no use for it.
Clarify documentation.

The string input visitor doesn't support struct visits.  Its
parse_optional() is therefore useless.  Drop it.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <1488544368-30622-16-git-send-email-armbru@redhat.com>
2017-03-05 09:14:19 +01:00
Markus Armbruster a9fc37f6bc qapi: Improve qobject input visitor error reporting
Error messages refer to nodes of the QObject being visited by name.
Trouble is the names are sometimes less than helpful:

* The name of the root QObject is whatever @name argument got passed
  to the visitor, except NULL gets mapped to "null".  We commonly pass
  NULL.  Not good.

  Avoiding errors "at the root" mitigates.  For instance,
  visit_start_struct() can only fail when the visited object is not a
  dictionary, and we commonly ensure it is beforehand.

* The name of a QDict's member is the member key.  Good enough only
  when this happens to be unique.

* The name of a QList's member is "null".  Not good.

Improve error messages by referring to nodes by path instead, as
follows:

* The path of the root QObject is whatever @name argument got passed
  to the visitor, except NULL gets mapped to "<anonymous>".

* The path of a root QDict's member is the member key.

* The path of a root QList's member is "[%u]", where %u is the list
  index, starting at zero.

* The path of a non-root QDict's member is the path of the QDict
  concatenated with "." and the member key.

* The path of a non-root QList's member is the path of the QList
  concatenated with "[%u]", where %u is the list index.

For example, the incorrect QMP command

    { "execute": "blockdev-add", "arguments": { "node-name": "foo", "driver": "raw", "file": {"driver": "file" } } }

now fails with

    {"error": {"class": "GenericError", "desc": "Parameter 'file.filename' is missing"}}

instead of

    {"error": {"class": "GenericError", "desc": "Parameter 'filename' is missing"}}

and

    { "execute": "input-send-event", "arguments": { "device": "bar", "events": [ [] ] } }

now fails with

    {"error": {"class": "GenericError", "desc": "Invalid parameter type for 'events[0]', expected: object"}}

instead of

    {"error": {"class": "GenericError", "desc": "Invalid parameter type for 'null', expected: QDict"}}

Aside: calling the thing "parameter" is suboptimal for QMP, because
the root object is "arguments" there.

The qobject output visitor doesn't have this problem because it should
not fail.  Same for dealloc and clone visitors.

The string visitors don't have this problem because they visit just
one value, whose name needs to be passed to the visitor as @name.  The
string output visitor shouldn't fail anyway.

The options visitor uses QemuOpts names.  Their name space is flat, so
the use of QDict member keys as names is fine.  NULL names used with
roots and lists could conceivably result in bad error messages.  Left
for another day.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <1488544368-30622-15-git-send-email-armbru@redhat.com>
2017-03-05 09:14:19 +01:00
Markus Armbruster 58561c2766 qapi: Make QObject input visitor set *list reliably
qobject_input_start_struct() sets *list, except when it fails because
qobject_input_get_object() fails, i.e. the input object doesn't exist.

All the other input visitor start_struct(), start_list(),
start_alternate() always set *obj / *list.

Change qobject_input_start_struct() to match.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <1488544368-30622-14-git-send-email-armbru@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
2017-03-05 09:14:19 +01:00
Markus Armbruster b8874fbfd3 qapi: Clean up after commit 3d344c2
Drop unused QIV_STACK_SIZE and unused qobject_input_start_struct()
parameter errp.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <1488544368-30622-13-git-send-email-armbru@redhat.com>
2017-03-05 09:14:19 +01:00
Markus Armbruster 910f738b85 qapi: Improve a QObject input visitor error message
The QObject input visitor has three error message formats:

* Parameter '%s' is missing
* "Invalid parameter type for '%s', expected: %s"
* "QMP input object member '%s' is unexpected"

The '%s' are member names (or "null", but I'll fix that later).

The last error message calls the thing "QMP input object member"
instead of "parameter".  Misleading when the visitor is used on
QObjects that don't come from QMP.  Change it to "Parameter '%s' is
unexpected".

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <1488544368-30622-12-git-send-email-armbru@redhat.com>
2017-03-05 09:14:19 +01:00
Markus Armbruster 99fb0c53c0 qmp: Eliminate silly QERR_QMP_* macros
The QERR_ macros are leftovers from the days of "rich" error objects.

QERR_QMP_BAD_INPUT_OBJECT, QERR_QMP_BAD_INPUT_OBJECT_MEMBER,
QERR_QMP_EXTRA_MEMBER are used in just one place now, except for one
use that has crept into qobject-input-visitor.c.

Drop these macros, to make the (bad) error messages more visible.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <1488544368-30622-10-git-send-email-armbru@redhat.com>
2017-03-05 09:14:19 +01:00
Markus Armbruster 104fc30279 qmp: Drop duplicated QMP command object checks
qmp_check_input_obj() duplicates qmp_dispatch_check_obj(), except the
latter screws up an error message.  handle_qmp_command() runs first
the former, then the latter via qmp_dispatch(), masking the screwup.

qemu-ga also masks the screwup, because it also duplicates checks,
just differently.

qmp_check_input_obj() exists because handle_qmp_command() needs to
examine the command before dispatching it.  The previous commit got
rid of this need, except for a tracepoint, and a bit of "id" code that
relies on qdict not being null.

Fix up the error message in qmp_dispatch_check_obj(), drop
qmp_check_input_obj() and the tracepoint.  Protect the "id" code with
a conditional.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <1488544368-30622-9-git-send-email-armbru@redhat.com>
2017-03-05 09:14:19 +01:00
Markus Armbruster 1527badb95 qapi: Support multiple command registries per program
The command registry encapsulates a single command list.  Give the
functions using it a parameter instead.  Define suitable command lists
in monitor, guest agent and test-qmp-commands.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <1488544368-30622-6-git-send-email-armbru@redhat.com>
[Debugging turds buried]
Reviewed-by: Eric Blake <eblake@redhat.com>
2017-03-05 09:12:25 +01:00
Markus Armbruster 74d8c9d99d qga: Fix crash on non-dictionary QMP argument
The value of key 'arguments' must be a JSON object.  qemu-ga neglects
to check, and crashes.  To reproduce, send

    { 'execute': 'guest-sync', 'arguments': [] }

to qemu-ga.

do_qmp_dispatch() uses qdict_get_qdict() to get the arguments.  When
not a JSON object, this gets a null pointer, which flows through the
generated marshalling function to qobject_input_visitor_new(), where
it fails the assertion.  qmp_dispatch_check_obj() needs to catch this
error.

QEMU isn't affected, because it runs qmp_check_input_obj() first,
which basically duplicates qmp_dispatch_check_obj()'s checks, plus the
missing one.

Fix by copying the missing one from qmp_check_input_obj() to
qmp_dispatch_check_obj().

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Cc: Michael Roth <mdroth@linux.vnet.ibm.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <1488544368-30622-2-git-send-email-armbru@redhat.com>
2017-03-05 09:02:10 +01:00
Anton Nefedov 11953be792 qmp-events: fix GUEST_PANICKED description formatting
Signed-off-by: Anton Nefedov <anton.nefedov@virtuozzo.com>
Signed-off-by: Denis V. Lunev <den@openvz.org>
CC: Paolo Bonzini <pbonzini@redhat.com>
CC: Eric Blake <eblake@redhat.com>
Message-Id: <1487614915-18710-4-git-send-email-den@openvz.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2017-03-03 16:40:03 +01:00
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Merge remote-tracking branch 'remotes/cody/tags/block-pull-request' into staging

# gpg: Signature made Thu 02 Mar 2017 03:42:59 GMT
# gpg:                using RSA key 0xBDBE7B27C0DE3057
# gpg: Good signature from "Jeffrey Cody <jcody@redhat.com>"
# gpg:                 aka "Jeffrey Cody <jeff@codyprime.org>"
# gpg:                 aka "Jeffrey Cody <codyprime@gmail.com>"
# Primary key fingerprint: 9957 4B4D 3474 90E7 9D98  D624 BDBE 7B27 C0DE 3057

* remotes/cody/tags/block-pull-request:
  block/rbd: add support for 'mon_host', 'auth_supported' via QAPI
  block/rbd: add blockdev-add support
  block/rbd: parse all options via bdrv_parse_filename
  block/rbd: add all the currently supported runtime_opts
  block/rbd: don't copy strings in qemu_rbd_next_tok()

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2017-03-02 23:20:37 +00:00
Jeff Cody 0a55679b4a block/rbd: add support for 'mon_host', 'auth_supported' via QAPI
This adds support for three additional options that may be specified
by QAPI in blockdev-add:

    server: host, port
    auth method: either 'cephx' or 'none'

The "server" and "auth-supported" QAPI parameters are arrays.  To conform
with the rados API, the array items are join as a single string with a ';'
character as a delimiter when setting the configuration values.

Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Jeff Cody <jcody@redhat.com>
2017-03-01 22:39:25 -05:00
Kevin Wolf 0db832f42e commit: Add filter-node-name to block-commit
Management tools need to be able to know about every node in the graph
and need a way to address them. Changing the graph structure was okay
because libvirt doesn't really manage the node level yet, but future
libvirt versions need to deal with both new and old version of qemu.

This new option to blockdev-commit allows the client to set a node-name
for the automatically inserted filter driver, and at the same time
serves as a witness for a future libvirt that this version of qemu does
automatically insert a filter driver.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Acked-by: Fam Zheng <famz@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
2017-02-28 20:47:50 +01:00
Kevin Wolf 6cdbceb12c mirror: Add filter-node-name to blockdev-mirror
Management tools need to be able to know about every node in the graph
and need a way to address them. Changing the graph structure was okay
because libvirt doesn't really manage the node level yet, but future
libvirt versions need to deal with both new and old version of qemu.

This new option to blockdev-mirror allows the client to set a node-name
for the automatically inserted filter driver, and at the same time
serves as a witness for a future libvirt that this version of qemu does
automatically insert a filter driver.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Acked-by: Fam Zheng <famz@redhat.com>
2017-02-28 20:47:50 +01:00
Jeff Cody 8a47e8eb59 block/rbd: add blockdev-add support
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Jeff Cody <jcody@redhat.com>
2017-02-28 11:32:40 -05:00
Jeff Cody 51654aa52a iscsi: add missing colons to the qapi docs
The missing colons make the iscsi part of the documentation not render
quite as nicely, so add those in.

Signed-off-by: Jeff Cody <jcody@redhat.com>
2017-02-27 23:33:41 -05:00
Peter Maydell d7941f4eed option cutils: Fix and clean up number conversions
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Merge remote-tracking branch 'remotes/armbru/tags/pull-util-2017-02-23' into staging

option cutils: Fix and clean up number conversions

# gpg: Signature made Thu 23 Feb 2017 19:41:17 GMT
# gpg:                using RSA key 0x3870B400EB918653
# gpg: Good signature from "Markus Armbruster <armbru@redhat.com>"
# gpg:                 aka "Markus Armbruster <armbru@pond.sub.org>"
# Primary key fingerprint: 354B C8B3 D7EB 2A6B 6867  4E5F 3870 B400 EB91 8653

* remotes/armbru/tags/pull-util-2017-02-23: (24 commits)
  option: Fix checking of sizes for overflow and trailing crap
  util/cutils: Change qemu_strtosz*() from int64_t to uint64_t
  util/cutils: Return qemu_strtosz*() error and value separately
  util/cutils: Let qemu_strtosz*() optionally reject trailing crap
  qemu-img: Wrap cvtnum() around qemu_strtosz()
  test-cutils: Drop suffix from test_qemu_strtosz_simple()
  test-cutils: Use qemu_strtosz() more often
  util/cutils: Drop QEMU_STRTOSZ_DEFSUFFIX_* macros
  util/cutils: New qemu_strtosz()
  util/cutils: Rename qemu_strtosz() to qemu_strtosz_MiB()
  util/cutils: New qemu_strtosz_metric()
  test-cutils: Cover qemu_strtosz() around range limits
  test-cutils: Cover qemu_strtosz() with trailing crap
  test-cutils: Cover qemu_strtosz() invalid input
  test-cutils: Add missing qemu_strtosz()... endptr checks
  option: Fix to reject invalid and overflowing numbers
  util/cutils: Clean up control flow around qemu_strtol() a bit
  util/cutils: Clean up variable names around qemu_strtol()
  util/cutils: Rename qemu_strtoll(), qemu_strtoull()
  util/cutils: Rewrite documentation of qemu_strtol() & friends
  ...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2017-02-24 18:34:27 +00:00
Markus Armbruster f46bfdbfc8 util/cutils: Change qemu_strtosz*() from int64_t to uint64_t
This will permit its use in parse_option_size().

Cc: Dr. David Alan Gilbert <dgilbert@redhat.com>
Cc: Eduardo Habkost <ehabkost@redhat.com> (maintainer:X86)
Cc: Kevin Wolf <kwolf@redhat.com> (supporter:Block layer core)
Cc: Max Reitz <mreitz@redhat.com> (supporter:Block layer core)
Cc: qemu-block@nongnu.org (open list:Block layer core)
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Message-Id: <1487708048-2131-24-git-send-email-armbru@redhat.com>
2017-02-23 20:35:36 +01:00
Markus Armbruster f17fd4fdf0 util/cutils: Return qemu_strtosz*() error and value separately
This makes qemu_strtosz(), qemu_strtosz_mebi() and
qemu_strtosz_metric() similar to qemu_strtoi64(), except negative
values are rejected.

Cc: Dr. David Alan Gilbert <dgilbert@redhat.com>
Cc: Eduardo Habkost <ehabkost@redhat.com> (maintainer:X86)
Cc: Kevin Wolf <kwolf@redhat.com> (supporter:Block layer core)
Cc: Max Reitz <mreitz@redhat.com> (supporter:Block layer core)
Cc: qemu-block@nongnu.org (open list:Block layer core)
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Message-Id: <1487708048-2131-23-git-send-email-armbru@redhat.com>
2017-02-23 20:35:36 +01:00
Markus Armbruster 4fcdf65ae2 util/cutils: Let qemu_strtosz*() optionally reject trailing crap
Change the qemu_strtosz() & friends to return -EINVAL when @endptr is
null and the conversion doesn't consume the string completely.
Matches how qemu_strtol() & friends work.

Only test_qemu_strtosz_simple() passes a null @endptr.  No functional
change there, because its conversion consumes the string.

Simplify callers that use @endptr only to fail when it doesn't point
to '\0' to pass a null @endptr instead.

Cc: Dr. David Alan Gilbert <dgilbert@redhat.com>
Cc: Eduardo Habkost <ehabkost@redhat.com> (maintainer:X86)
Cc: Kevin Wolf <kwolf@redhat.com> (supporter:Block layer core)
Cc: Max Reitz <mreitz@redhat.com> (supporter:Block layer core)
Cc: qemu-block@nongnu.org (open list:Block layer core)
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Message-Id: <1487708048-2131-22-git-send-email-armbru@redhat.com>
2017-02-23 20:35:36 +01:00
Markus Armbruster 466dea14e6 util/cutils: New qemu_strtosz()
Most callers of qemu_strtosz_suffix() pass QEMU_STRTOSZ_DEFSUFFIX_B.
Capture the pattern in new qemu_strtosz().

Inline qemu_strtosz_suffix() into its only remaining caller.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <1487708048-2131-17-git-send-email-armbru@redhat.com>
2017-02-23 20:35:36 +01:00
Markus Armbruster ca6b6e1e68 Don't check qobject_type() before qobject_to_qdict()
qobject_to_qdict(obj) returns NULL when obj isn't a QDict.  Check
that instead of qobject_type(obj) == QTYPE_QDICT.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <1487363905-9480-8-git-send-email-armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
2017-02-22 19:52:01 +01:00