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2017-08-03blkdebug: Add ability to override unmap geometriesEric Blake
Make it easier to simulate various unusual hardware setups (for example, recent commits 3482b9b and b8d0a98 affect the Dell Equallogic iSCSI with its 15M preferred and maximum unmap and write zero sizing, or b2f95fe deals with the Linux loopback block device having a max_transfer of 64k), by allowing blkdebug to wrap any other device with further restrictions on various alignments. Signed-off-by: Eric Blake <eblake@redhat.com> Reviewed-by: Max Reitz <mreitz@redhat.com> Message-id: 20170429191419.30051-9-eblake@redhat.com Signed-off-by: Max Reitz <mreitz@redhat.com> (cherry picked from commit 430b26a82da61876c4eaf559ae02332582968043) * prereq for 81c219a Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
2017-07-31qobject: Use simpler QDict/QList scalar insertion macrosEric Blake
We now have macros in place to make it less verbose to add a scalar to QDict and QList, so use them. Patch created mechanically via: spatch --sp-file scripts/coccinelle/qobject.cocci \ --macro-file scripts/cocci-macro-file.h --dir . --in-place then touched up manually to fix a couple of '?:' back to original spacing, as well as avoiding a long line in monitor.c. Signed-off-by: Eric Blake <eblake@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Message-Id: <20170427215821.19397-7-eblake@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Alberto Garcia <berto@igalia.com> Signed-off-by: Markus Armbruster <armbru@redhat.com> (cherry picked from commit 46f5ac205a9dc5e2c24274c7df371509a286281f) * prereq for fc0932f Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
2017-04-03sheepdog: Fix blockdev-addMarkus Armbruster
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>
2017-04-03nbd: Tidy up blockdev-add interfaceMarkus Armbruster
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>
2017-03-31qapi/curl: Extend and fix blockdev-add schemaMax Reitz
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>
2017-03-28Merge remote-tracking branch 'remotes/cody/tags/block-pull-request' into stagingPeter Maydell
# 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>
2017-03-28rbd: Revert -blockdev parameter password-secretMarkus Armbruster
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>
2017-03-28rbd: Revert -blockdev and -drive parameter auth-supportedMarkus Armbruster
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>
2017-03-28rbd: Reject -blockdev server.*.{numeric, to, ipv4, ipv6}Markus Armbruster
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>
2017-03-28block: Declare blockdev-add and blockdev-del supportedMarkus Armbruster
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>
2017-03-22qapi: Fix QemuOpts visitor regression on unvisited inputEric Blake
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>
2017-03-21qapi: Fix string input visitor regression for empty listsMarkus Armbruster
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>
2017-03-16qapi2texi: Implement boxed argument documentationMarkus Armbruster
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>
2017-03-16qapi: The #optional tag is redundant, dropMarkus Armbruster
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>
2017-03-16qapi/rocker: Fix up doc comment notes on optional membersMarkus Armbruster
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>
2017-03-13block: Drop unmaintained 'archipelago' driverEric Blake
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>
2017-03-08Merge remote-tracking branch 'remotes/kevin/tags/for-upstream' into stagingPeter Maydell
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>
2017-03-07keyval: Support listsMarkus Armbruster
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>
2017-03-07qapi: Improve how keyval input visitor reports unexpected dictsMarkus Armbruster
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>
2017-03-07qapi: New qobject_input_visitor_new_str() for convenienceMarkus Armbruster
Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-Id: <1488317230-26248-21-git-send-email-armbru@redhat.com>
2017-03-07qapi: New parse_qapi_name()Markus Armbruster
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>
2017-03-07qapi: Factor out common qobject_input_get_keyval()Markus Armbruster
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>
2017-03-07qapi: Factor out common part of qobject input visitor creationMarkus Armbruster
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>
2017-03-07qapi: qobject input visitor variant for use with keyval_parse()Daniel P. Berrange
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>
2017-03-07sheepdog: Support blockdev-addMarkus Armbruster
Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2017-03-07qapi-schema: Rename GlusterServer to SocketAddressFlatMarkus Armbruster
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>
2017-03-05qapi: Fix object input visit beyond end of listMarkus Armbruster
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>
2017-03-05qapi: Make input visitors detect unvisited list tailsMarkus Armbruster
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>
2017-03-05qapi: Drop unused non-strict qobject input visitorMarkus Armbruster
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>
2017-03-05qapi: Make string input and opts visitor require non-null inputMarkus Armbruster
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>
2017-03-05qapi: Drop string input visitor method optional()Markus Armbruster
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>
2017-03-05qapi: Improve qobject input visitor error reportingMarkus Armbruster
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>
2017-03-05qapi: Make QObject input visitor set *list reliablyMarkus Armbruster
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>
2017-03-05qapi: Clean up after commit 3d344c2Markus Armbruster
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>
2017-03-05qapi: Improve a QObject input visitor error messageMarkus Armbruster
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>
2017-03-05qmp: Eliminate silly QERR_QMP_* macrosMarkus Armbruster
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>
2017-03-05qmp: Drop duplicated QMP command object checksMarkus Armbruster
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>
2017-03-05qapi: Support multiple command registries per programMarkus Armbruster
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>
2017-03-05qga: Fix crash on non-dictionary QMP argumentMarkus Armbruster
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>
2017-03-03qmp-events: fix GUEST_PANICKED description formattingAnton Nefedov
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>
2017-03-02Merge remote-tracking branch 'remotes/cody/tags/block-pull-request' into stagingPeter Maydell
# 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>
2017-03-01block/rbd: add support for 'mon_host', 'auth_supported' via QAPIJeff Cody
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>
2017-02-28commit: Add filter-node-name to block-commitKevin Wolf
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>
2017-02-28mirror: Add filter-node-name to blockdev-mirrorKevin Wolf
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>
2017-02-28block/rbd: add blockdev-add supportJeff Cody
Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Jeff Cody <jcody@redhat.com>
2017-02-27iscsi: add missing colons to the qapi docsJeff Cody
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>
2017-02-24Merge remote-tracking branch 'remotes/armbru/tags/pull-util-2017-02-23' into ↵Peter Maydell
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>
2017-02-23util/cutils: Change qemu_strtosz*() from int64_t to uint64_tMarkus Armbruster
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>
2017-02-23util/cutils: Return qemu_strtosz*() error and value separatelyMarkus Armbruster
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>
2017-02-23util/cutils: Let qemu_strtosz*() optionally reject trailing crapMarkus Armbruster
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>
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