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2016-05-26migration: convert savevm to use QIOChannel for writing to filesDaniel P. Berrange2-3/+12
Convert the exec savevm code to use QIOChannel and QEMUFileChannel, instead of the stdio APIs. Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Signed-off-by: Daniel P. Berrange <berrange@redhat.com> Message-Id: <1461751518-12128-19-git-send-email-berrange@redhat.com> Signed-off-by: Amit Shah <amit.shah@redhat.com>
2016-05-26migration: remove use of qemu_bufopen from vmstate testsDaniel P. Berrange2-32/+14
Some of the test-vmstate.c test cases use a temporary file while others use a memory buffer. To facilitate the future removal of the qemu_bufopen() function, convert all the tests to use a temporary file. Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Signed-off-by: Daniel P. Berrange <berrange@redhat.com> Reviewed-by: Juan Quintela <quintela@redhat.com> Message-Id: <1461751518-12128-4-git-send-email-berrange@redhat.com> Signed-off-by: Amit Shah <amit.shah@redhat.com>
2016-05-23migration: Move qjson.[ch] to migration/Markus Armbruster1-1/+1
Type QJSON lets you build JSON text. Its interface mirrors (a subset of) abstract JSON syntax. QAPI output visitors also produce JSON text. They assert their preconditions and invariants, and therefore abort on incorrect use. Contrastingly, QJSON does *not* detect incorrect use. It happily produces invalid JSON then. This is what migration wants. QJSON was designed for migration, and migration is its only user. Move it to migration/ for proper coverage by MAINTAINERS, and to deter accidental use outside migration. [Pointed out by Eric: QJSON was added in commits 0457d07..b174257 -- Amit] 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: <1462380558-2030-2-git-send-email-armbru@redhat.com> Signed-off-by: Amit Shah <amit.shah@redhat.com>
2016-05-19Merge remote-tracking branch 'remotes/kevin/tags/for-upstream' into stagingPeter Maydell11-320/+555
Block layer patches # gpg: Signature made Thu 19 May 2016 16:09:27 BST using RSA key ID C88F2FD6 # gpg: Good signature from "Kevin Wolf <kwolf@redhat.com>" * remotes/kevin/tags/for-upstream: (31 commits) qemu-iotests: Fix regression in 136 on aio_read invalid qemu-iotests: Simplify 109 with unaligned qemu-img compare qemu-io: Fix recent UI updates block: clarify error message for qmp-eject qemu-iotests: Some more write_zeroes tests qcow2: Fix write_zeroes with partially allocated backing file cluster qcow2: fix condition in is_zero_cluster block: Propagate AioContext change to all children block: Remove BlockDriverState.blk block: Don't return throttling info in query-named-block-nodes block: Avoid bs->blk in bdrv_next() block: Add bdrv_has_blk() block: Remove bdrv_aio_multiwrite() blockjob: Don't touch BDS iostatus blockjob: Don't set iostatus of target block: User BdrvChild callback for device name block: Use BdrvChild callbacks for change_media/resize block: Don't check throttled reqs in bdrv_requests_pending() Revert "block: Forbid I/O throttling on nodes with multiple parents for 2.6" block: Remove bdrv_move_feature_fields() ... Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2016-05-19qemu-iotests: Fix regression in 136 on aio_read invalidEric Blake1-11/+4
Commit 093ea232 removed the ability for aio_read and aio_write to artificially inflate the invalid statistics counters for block devices, since it no longer flags unaligned offset or length. Add 'aio_read -i' and 'aio_write -i' to restore the ability, and update test 136 to use it. Reported-by: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Eric Blake <eblake@redhat.com> Message-id: 1463416983-28318-4-git-send-email-eblake@redhat.com Signed-off-by: Max Reitz <mreitz@redhat.com>
2016-05-19qemu-iotests: Simplify 109 with unaligned qemu-img compareEric Blake2-6/+0
For some time now, qemu-img compare has been able to compare unaligned images. So we no longer need test 109's hack of resizing to sector boundaries before invoking compare. Signed-off-by: Eric Blake <eblake@redhat.com> Reviewed-by: Max Reitz <mreitz@redhat.com> Message-id: 1463416983-28318-3-git-send-email-eblake@redhat.com Signed-off-by: Max Reitz <mreitz@redhat.com>
2016-05-19qemu-iotests: Some more write_zeroes testsKevin Wolf3-0/+508
This covers some more write_zeroes cases which are relevant for the recent qcow2 optimisations that check the allocation status of the backing file for partial cluster write_zeroes requests. This needs to be separate from 034 because we can only support qcow2 in this test case for multiple reasons: We check the allocation status after write_zeroes with 'qemu-img map' and the optimised behaviour that produces zero clusters is only implemented in qcow2; second, the map command returns offsets that are qcow2 specific; and finally, we also use 512 byte clusters which aren't supported for formats like qed. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com>
2016-05-19block: Don't return throttling info in query-named-block-nodesKevin Wolf1-1/+2
query-named-block-nodes should not return information that is related to the attached BlockBackend rather than the node itself, so throttling information needs to be removed from it. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Max Reitz <mreitz@redhat.com>
2016-05-19block: Remove bdrv_aio_multiwrite()Kevin Wolf5-274/+7
Since virtio-blk implements request merging itself these days, the only remaining users are test cases for the function. That doesn't make the function exactly useful any more. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Max Reitz <mreitz@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com>
2016-05-19block: Move I/O throttling configuration functions to BlockBackendKevin Wolf1-10/+6
Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Alberto Garcia <berto@igalia.com> Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
2016-05-19block: Move throttling fields from BDS to BBKevin Wolf1-12/+16
This patch changes where the throttling state is stored (used to be the BlockDriverState, now it is the BlockBackend), but it doesn't actually make it a BB level feature yet. For example, throttling is still disabled when the BDS is detached from the BB. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
2016-05-19block: Convert throttle_group_get_name() to BlockBackendKevin Wolf1-2/+2
Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Alberto Garcia <berto@igalia.com> Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
2016-05-19block: throttle-groups: Use BlockBackend pointers internallyKevin Wolf1-6/+7
As a first step towards moving I/O throttling to the BlockBackend level, this patch changes all pointers in struct ThrottleGroup from referencing a BlockDriverState to referencing a BlockBackend. This change is valid because we made sure that throttling can only be enabled on BDSes which have a BB attached. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Alberto Garcia <berto@igalia.com> Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
2016-05-19block: Make sure throttled BDSes always have a BBKevin Wolf1-3/+8
It was already true in principle that a throttled BDS always has a BB attached, except that the order of operations while attaching or detaching a BDS to/from a BB wasn't careful enough. This commit breaks graph manipulations while I/O throttling is enabled. It would have been possible to keep things working with some temporary hacks, but quite cumbersome, so it's not worth the hassle. We'll fix things again in a minute. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Alberto Garcia <berto@igalia.com> Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
2016-05-19qemu-common: stop including qemu/host-utils.h from qemu-common.hPaolo Bonzini1-0/+1
Move it to the actual users. There are some inclusions of qemu/host-utils.h in headers, but they are all necessary. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-05-19qemu-common: stop including qemu/bswap.h from qemu-common.hPaolo Bonzini1-0/+1
Move it to the actual users. There are still a few includes of qemu/bswap.h in headers; removing them is left for future work. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-05-18Fix some typos found by codespellStefan Weil1-7/+7
Signed-off-by: Stefan Weil <sw@weilnetz.de> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
2016-05-12Merge remote-tracking branch 'remotes/kevin/tags/for-upstream' into stagingPeter Maydell18-771/+1613
Block layer patches # gpg: Signature made Thu 12 May 2016 14:37:05 BST using RSA key ID C88F2FD6 # gpg: Good signature from "Kevin Wolf <kwolf@redhat.com>" * remotes/kevin/tags/for-upstream: (69 commits) qemu-iotests: iotests: fail hard if not run via "check" block: enable testing of LUKS driver with block I/O tests block: add support for encryption secrets in block I/O tests block: add support for --image-opts in block I/O tests qemu-io: Add 'write -z -u' to test MAY_UNMAP flag qemu-io: Add 'write -f' to test FUA flag qemu-io: Allow unaligned access by default qemu-io: Use bool for command line flags qemu-io: Make 'open' subcommand more like command line qemu-io: Add missing option documentation qmp: add monitor command to add/remove a child quorum: implement bdrv_add_child() and bdrv_del_child() Add new block driver interface to add/delete a BDS's child qemu-img: check block status of backing file when converting. iotests: fix the redirection order in 083 block: Inactivate all children block: Drop superfluous invalidating bs->file from drivers block: Invalidate all children nbd: Simplify client FUA handling block: Honor BDRV_REQ_FUA during write_zeroes ... Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2016-05-12qemu-iotests: iotests: fail hard if not run via "check"Sascha Silbe1-1/+9
Running an iotests-based Python test directly might appear to work, but may fail in subtle ways and is insecure: - It creates files with predictable file names in a world-writable location (/var/tmp). - Tests expect the environment to be set up by check. E.g. 041 and 055 may take the wrong code paths if QEMU_DEFAULT_MACHINE is not set. This can lead to false negatives. Instead fail hard and tell the user we want to be run via "check". The actual environment expected by the tests is currently only defined by the implementation of "check". We use two of the environment variables set by "check" as indication of whether we're being run via "check". Anyone writing their own test runner (replacing "check") will need to replicate the full environment (in a broader sense, not just environment variables) provided by "check" anyway, including setting the two environment variables we check. Whereas a regular developer just trying to invoke the tests usually won't have both of these defined in their environment so we can catch their mistake and give out useful advice. Signed-off-by: Sascha Silbe <silbe@linux.vnet.ibm.com> Reviewed-by: Bo Tu <tubo@linux.vnet.ibm.com> Message-id: 1461094442-16014-1-git-send-email-silbe@linux.vnet.ibm.com Signed-off-by: Max Reitz <mreitz@redhat.com>
2016-05-12block: enable testing of LUKS driver with block I/O testsDaniel P. Berrange10-11/+67
This adds support for testing the LUKS driver with the block I/O test framework. cd tests/qemu-io-tests ./check -luks A handful of test cases are modified to work with luks - 004 - whitelist luks format - 012 - use TEST_IMG_FILE instead of TEST_IMG for file ops - 048 - use TEST_IMG_FILE instead of TEST_IMG for file ops. don't assume extended image contents is all zeros, explicitly initialize with zeros Make file size smaller to avoid having to decrypt 1 GB of data. - 052 - don't assume initial image contents is all zeros, explicitly initialize with zeros - 100 - don't assume initial image contents is all zeros, explicitly initialize with zeros With this patch applied, the results are as follows: Passed: 001 002 003 004 005 008 009 010 011 012 021 032 043 047 048 049 052 087 100 134 143 Failed: 033 120 140 145 Skipped: 007 013 014 015 017 018 019 020 022 023 024 025 026 027 028 029 030 031 034 035 036 037 038 039 040 041 042 043 044 045 046 047 049 050 051 053 054 055 056 057 058 059 060 061 062 063 064 065 066 067 068 069 070 071 072 073 074 075 076 077 078 079 080 081 082 083 084 085 086 087 088 089 090 091 092 093 094 095 096 097 098 099 101 102 103 104 105 107 108 109 110 111 112 113 114 115 116 117 118 119 121 122 123 124 128 129 130 131 132 133 134 135 136 137 138 139 141 142 144 146 148 150 152 The reasons for the failed tests are: - 033 - needs adapting to use image opts syntax with blkdebug and test image in order to correctly set align property - 120 - needs adapting to use correct -drive syntax for luks - 140 - needs adapting to use correct -drive syntax for luks - 145 - needs adapting to use correct -drive syntax for luks The vast majority of skipped tests are exercising code that is qcow2 specific, though a couple could probably be usefully enabled for luks too. Signed-off-by: Daniel P. Berrange <berrange@redhat.com> Message-id: 1462896689-18450-4-git-send-email-berrange@redhat.com Signed-off-by: Max Reitz <mreitz@redhat.com>
2016-05-12block: add support for encryption secrets in block I/O testsDaniel P. Berrange4-3/+16
The LUKS block driver tests will require the ability to specify encryption secrets with block devices. This requires using the --object argument to qemu-img/qemu-io to create a 'secret' object. When the IMGKEYSECRET env variable is set, it provides the password to be associated with a secret called 'keysec0' The _qemu_img_wrapper function isn't modified as that needs to cope with differing syntax for subcommands, so can't be made to use the image opts syntax unconditionally. Signed-off-by: Daniel P. Berrange <berrange@redhat.com> Message-id: 1462896689-18450-3-git-send-email-berrange@redhat.com Signed-off-by: Max Reitz <mreitz@redhat.com>
2016-05-12block: add support for --image-opts in block I/O testsDaniel P. Berrange6-34/+77
Currently all block tests use the traditional syntax for images just specifying a filename. To support the LUKS driver without resorting to JSON, the tests need to be able to use the new --image-opts argument to qemu-img and qemu-io. This introduces a new env variable IMGOPTSSYNTAX. If this is set to 'true', then qemu-img/qemu-io should use --image-opts. Signed-off-by: Daniel P. Berrange <berrange@redhat.com> Message-id: 1462896689-18450-2-git-send-email-berrange@redhat.com Signed-off-by: Max Reitz <mreitz@redhat.com>
2016-05-12qemu-io: Allow unaligned access by defaultEric Blake1-720/+1440
There's no reason to require the user to specify a flag just so they can pass in unaligned numbers. Keep 'read -p' and 'write -p' as no-ops so that I don't have to hunt down and update all users of qemu-io, but otherwise make their behavior default as 'read' and 'write'. Also fix 'write -z', 'readv', 'writev', 'writev', 'aio_read', 'aio_write', and 'aio_write -z'. For now, 'read -b', 'write -b', and 'write -c' still require alignment (and 'multiwrite', but that's slated to die soon). qemu-iotest 23 is updated to match, as the only test that was previously explicitly expecting an error on an unaligned request. Signed-off-by: Eric Blake <eblake@redhat.com> Message-id: 1462677405-4752-5-git-send-email-eblake@redhat.com Reviewed-by: Max Reitz <mreitz@redhat.com> Signed-off-by: Max Reitz <mreitz@redhat.com>
2016-05-12iotests: fix the redirection order in 083Wei Jiangang1-2/+2
It should redirect stdout to /dev/null first, then redirect stderr to whatever stdout currently points at. Signed-off-by: Wei Jiangang <weijg.fnst@cn.fujitsu.com> Message-id: 1461665601-14908-1-git-send-email-weijg.fnst@cn.fujitsu.com Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Max Reitz <mreitz@redhat.com>
2016-05-12Allow users to specify the vmdk virtual hardware version.Janne Karhunen1-0/+2
Vmdk images have metadata to indicate the vmware virtual hardware version image was created/tested to run with. Allow users to specify that version via new 'hwversion' option. [ kwolf: Adjust qemu-iotests common.filter ] Signed-off-by: Janne Karhunen <Janne.Karhunen@gmail.com> Reviewed-by: Fam Zheng <famz@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2016-05-12qapi: Change visit_type_FOO() to no longer return partial objectsEric Blake3-25/+15
Returning a partial object on error is an invitation for a careless caller to leak memory. We already fixed things in an earlier patch to guarantee NULL if visit_start fails ("qapi: Guarantee NULL obj on input visitor callback error"), but that does not help the case where visit_start succeeds but some other failure happens before visit_end, such that we leak a partially constructed object outside visit_type_FOO(). As no one outside the testsuite was actually relying on these semantics, it is cleaner to just document and guarantee that ALL pointer-based visit_type_FOO() functions always leave a safe value in *obj during an input visitor (either the new object on success, or NULL if an error is encountered), so callers can now unconditionally use qapi_free_FOO() to clean up regardless of whether an error occurred. The decision is done by adding visit_is_input(), then updating the generated code to check if additional cleanup is needed based on the type of visitor in use. Note that we still leave *obj unchanged after a scalar-based visit_type_FOO(); I did not feel like auditing all uses of visit_type_Enum() to see if the callers would tolerate a specific sentinel value (not to mention having to decide whether it would be better to use 0 or ENUM__MAX as that sentinel). Signed-off-by: Eric Blake <eblake@redhat.com> Message-Id: <1461879932-9020-25-git-send-email-eblake@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com>
2016-05-12qapi: Simplify semantics of visit_next_list()Eric Blake1-2/+0
The semantics of the list visit are somewhat baroque, with the following pseudocode when FooList is used: start() for (prev = head; cur = next(prev); prev = &cur) { visit(&cur->value) } Note that these semantics (advance before visit) requires that the first call to next() return the list head, while all other calls return the next element of the list; that is, every visitor implementation is required to track extra state to decide whether to return the input as-is, or to advance. It also requires an argument of 'GenericList **' to next(), solely because the first iteration might need to modify the caller's GenericList head, so that all other calls have to do a layer of dereferencing. Thankfully, we only have two uses of list visits in the entire code base: one in spapr_drc (which completely avoids visit_next_list(), feeding in integers from a different source than uint8List), and one in qapi-visit.py. That is, all other list visitors are generated in qapi-visit.c, and share the same paradigm based on a qapi FooList type, so we can refactor how lists are laid out with minimal churn among clients. We can greatly simplify things by hoisting the special case into the start() routine, and flipping the order in the loop to visit before advance: start(head) for (tail = *head; tail; tail = next(tail)) { visit(&tail->value) } With the simpler semantics, visitors have less state to track, the argument to next() is reduced to 'GenericList *', and it also becomes obvious whether an input visitor is allocating a FooList during visit_start_list() (rather than the old way of not knowing if an allocation happened until the first visit_next_list()). As a minor drawback, we now allocate in two functions instead of one, and have to pass the size to both functions (unless we were to tweak the input visitors to cache the size to start_list for reuse during next_list, but that defeats the goal of less visitor state). The signature of visit_start_list() is chosen to match visit_start_struct(), with the new parameters after 'name'. The spapr_drc case is a virtual visit, done by passing NULL for list, similarly to how NULL is passed to visit_start_struct() when a qapi type is not used in those visits. It was easy to provide these semantics for qmp-output and dealloc visitors, and a bit harder for qmp-input (several prerequisite patches refactored things to make this patch straightforward). But it turned out that the string and opts visitors munge enough other state during visit_next_list() to make it easier to just document and require a GenericList visit for now; an assertion will remind us to adjust things if we need the semantics in the future. Several pre-requisite cleanup patches made the reshuffling of the various visitors easier; particularly the qmp input visitor. Signed-off-by: Eric Blake <eblake@redhat.com> Message-Id: <1461879932-9020-24-git-send-email-eblake@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com>
2016-05-12qapi: Fix string input visitor handling of invalid listEric Blake1-7/+5
As shown in the previous commit, the string input visitor was treating bogus input as an empty list rather than an error. Fix parse_str() to set errp, then the callers to exit early if an error was reported. Meanwhile, fix the testsuite to use the generated qapi_free_int16List() instead of rolling our own, and to validate the fixed behavior, while at the same time documenting one more change that we'd like to make in a later patch (a failed visit_start_list should guarantee a NULL pointer, regardless of what things were on input). Signed-off-by: Eric Blake <eblake@redhat.com> Message-Id: <1461879932-9020-23-git-send-email-eblake@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com>
2016-05-12tests/string-input-visitor: Add negative integer testsMarkus Armbruster1-0/+15
Add two negative tests, one for int and one for int16List. The latter exposes a bug: nonsensical input results in an empty list instead of an error. Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-Id: <1461325048-14122-1-git-send-email-armbru@redhat.com> Signed-off-by: Eric Blake <eblake@redhat.com> Message-Id: <1461879932-9020-22-git-send-email-eblake@redhat.com>
2016-05-12qapi: Split visit_end_struct() into piecesEric Blake2-2/+4
As mentioned in previous patches, we want to call visit_end_struct() functions unconditionally, so that visitors can release resources tied up since the matching visit_start_struct() without also having to worry about error priority if more than one error occurs. Even though error_propagate() can be safely used to ignore a second error during cleanup caused by a first error, it is simpler if the cleanup cannot set an error. So, split out the error checking portion (basically, input visitors checking for unvisited keys) into a new function visit_check_struct(), which can be safely skipped if any earlier errors are encountered, and leave the cleanup portion (which never fails, but must be called unconditionally if visit_start_struct() succeeded) in visit_end_struct(). Generated code in qapi-visit.c has diffs resembling: |@@ -59,10 +59,12 @@ void visit_type_ACPIOSTInfo(Visitor *v, | goto out_obj; | } | visit_type_ACPIOSTInfo_members(v, obj, &err); |- error_propagate(errp, err); |- err = NULL; |+ if (err) { |+ goto out_obj; |+ } |+ visit_check_struct(v, &err); | out_obj: |- visit_end_struct(v, &err); |+ visit_end_struct(v); | out: and in qapi-event.c: @@ -47,7 +47,10 @@ void qapi_event_send_acpi_device_ost(ACP | goto out; | } | visit_type_q_obj_ACPI_DEVICE_OST_arg_members(v, &param, &err); |- visit_end_struct(v, err ? NULL : &err); |+ if (!err) { |+ visit_check_struct(v, &err); |+ } |+ visit_end_struct(v); | if (err) { | goto out; Signed-off-by: Eric Blake <eblake@redhat.com> Message-Id: <1461879932-9020-20-git-send-email-eblake@redhat.com> [Conflict with a doc fixup resolved] Signed-off-by: Markus Armbruster <armbru@redhat.com>
2016-05-12qmp: Don't reuse qmp visitor after grabbing outputEric Blake1-0/+12
The testsuite was the only client that attempted to reuse a QmpOutputVisitor for a second visit after encountering an error and/or calling qmp_output_get_qobject() on a first visit. The next patch is about to tighten the semantics to be one-shot usage of the visitor, like all other visitors (which will enable further simplifications down the road). Signed-off-by: Eric Blake <eblake@redhat.com> Message-Id: <1462854006-24658-1-git-send-email-eblake@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com>
2016-05-12qmp: Support explicit null during visitsEric Blake3-7/+55
Implement the new type_null() callback for the qmp input and output visitors. While we don't yet have a use for this in QAPI input (the generator will need some tweaks first), some potential usages have already been discussed on the list. Meanwhile, the output visitor could already output explicit null via type_any, but this gives us finer control. At any rate, it's easy to test that we can round-trip an explicit null through manual use of visit_type_null() wrapped by a virtual visit_start_struct() walk, even if we can't do the visit in a QAPI type. Repurpose the test_visitor_out_empty test, particularly since a future patch will tighten semantics to forbid use of qmp_output_get_qobject() without at least one intervening visit_type_*. Signed-off-by: Eric Blake <eblake@redhat.com> Message-Id: <1461879932-9020-16-git-send-email-eblake@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com>
2016-05-12tests: Add check-qnullEric Blake4-3/+72
Add a new test, for checking reference counting of qnull(). As part of the new file, move a previous reference counting change added in commit a861564 to a more logical place. Note that while most of the check-q*.c leave visitor stuff to the test-qmp-*-visitor.c, in this case we actually want the visitor tests in our new file because we are validating the reference count of qnull_, which is an internal detail that test-qmp-*-visitor should not be peeking into (or put another way, qnull() is the only special case where we don't have independent allocation of a QObject, so none of the other visitor tests require the layering violation present in this test). Signed-off-by: Eric Blake <eblake@redhat.com> Message-Id: <1461879932-9020-14-git-send-email-eblake@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com>
2016-05-12qapi: Use strict QMP input visitor in more placesEric Blake2-2/+2
The following uses of a QMP input visitor should be strict (that is, excess keys in QDict input should be flagged if not converted to QAPI): - Testsuite code unrelated to explicitly testing non-strict mode (test-qmp-commands, test-visitor-serialization); since we want more code to be strict by default, having more tests of strict mode doesn't hurt - Code used for cloning QAPI objects (replay-input.c, qemu-sockets.c); we are reparsing a QObject just barely produced by the qmp output visitor and which therefore should not have any garbage, so while it is extra work to be strict, it validates that our clone is correct [note that a later patch series will simplify these two uses by creating an actual clone visitor that is much more efficient than a generate/reparse cycle] - qmp_object_add(), which calls into user_creatable_add_type(). Since command line parsing for '-object' uses the same user_creatable_add_type() through the OptsVisitor, and that is always strict, we want to ensure that any nested dictionaries would be treated the same in QMP and from the command line (I don't actually know if such nested dictionaries exist). Note that on this code change, strictness only matters for nested dictionaries (if even possible), since we already flag excess input at the top level during an earlier object_property_set() on an unknown key, whether from QemuOpts: $ ./x86_64-softmmu/qemu-system-x86_64 -nographic -nodefaults -qmp stdio -object secret,id=sec0,data=letmein,format=raw,foo=bar qemu-system-x86_64: -object secret,id=sec0,data=letmein,format=raw,foo=bar: Property '.foo' not found or from QMP: $ ./x86_64-softmmu/qemu-system-x86_64 -nographic -nodefaults -qmp stdio {"QMP": {"version": {"qemu": {"micro": 93, "minor": 5, "major": 2}, "package": ""}, "capabilities": []}} {"execute":"qmp_capabilities"} {"return": {}} {"execute":"object-add","arguments":{"qom-type":"secret","id":"sec0","props":{"format":"raw","data":"letmein","foo":"bar"}}} {"error": {"class": "GenericError", "desc": "Property '.foo' not found"}} The only remaining uses of non-strict input visits are: - QMP 'qom-set' (which eventually executes object_property_set_qobject()) - mark it as something to revisit in the future (I didn't want to spend any more time on this patch auditing if we have any QOM dictionary properties that might be impacted, and couldn't easily prove whether this code path is shared with anything else). - test-qmp-input-visitor: explicit tests of non-strict mode. If we later get rid of users that don't need strictness, then this test should be merged with test-qmp-input-strict Signed-off-by: Eric Blake <eblake@redhat.com> Message-Id: <1461879932-9020-7-git-send-email-eblake@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com>
2016-05-12qapi: Consolidate QMP input visitor creationEric Blake4-4/+4
Rather than having two separate ways to create a QMP input visitor, where the safer approach has the more verbose name, it is better to consolidate things into a single function where the caller must explicitly choose whether to be strict or to ignore excess input. This patch is the strictly mechanical conversion; the next patch will then audit which uses can be made stricter. Signed-off-by: Eric Blake <eblake@redhat.com> Message-Id: <1461879932-9020-6-git-send-email-eblake@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com>
2016-05-12qapi: Guarantee NULL obj on input visitor callback errorEric Blake1-1/+1
Our existing input visitors were not very consistent on errors in a function taking 'TYPE **obj'. These are start_struct(), start_alternate(), type_str(), and type_any(). next_list() is similar, but can't fail (see commit 08f9541). While all of them set '*obj' to allocated storage on success, it was not obvious whether '*obj' was guaranteed safe on failure, or whether it was left uninitialized. But a future patch wants to guarantee that visit_type_FOO() does not leak a partially-constructed obj back to the caller; it is easier to implement this if we can reliably state that input visitors assign '*obj' regardless of success or failure, and that on failure *obj is NULL. Add assertions to enforce consistency in the final setting of err vs. *obj. The opts-visitor start_struct() doesn't set an error, but it also was doing a weird check for 0 size; all callers pass in non-zero size if obj is non-NULL. The testsuite has at least one spot where we no longer need to pre-initialize a variable prior to a visit; valgrind confirms that the test is still fine with the cleanup. A later patch will document the design constraint implemented here. Signed-off-by: Eric Blake <eblake@redhat.com> Message-Id: <1461879932-9020-3-git-send-email-eblake@redhat.com> [visit_start_alternate()'s assertion tightened, commit message tweaked] Signed-off-by: Markus Armbruster <armbru@redhat.com>
2016-04-20iotests: Test case for drive-mirror with unaligned image sizeFam Zheng3-0/+68
This is the regression test for the virtual size mismatch issue between target and source images. [ kwolf: Added test_unaligned_with_update ] Signed-off-by: Fam Zheng <famz@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Max Reitz <mreitz@redhat.com> Reviewed-by: Jeff Cody <jcody@redhat.com>
2016-04-20iotests: Add iotests.image_sizeFam Zheng1-0/+6
This retrieves the virtual size of the image out of qemu-img info. Signed-off-by: Fam Zheng <famz@redhat.com> Reviewed-by: Max Reitz <mreitz@redhat.com> Reviewed-by: Jeff Cody <jcody@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2016-04-20mirror: Don't extend the last sub-chunkFam Zheng1-22/+22
The last sub-chunk is rounded up to the copy granularity in the target image, resulting in a larger size than the source. Add a function to clip the copied sectors to the end. This undoes the "wrong" changes to tests/qemu-iotests/109.out in e5b43573e28. The remaining two offset changes are okay. [ kwolf: Use DIV_ROUND_UP to calculate nb_chunks now ] Reported-by: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Fam Zheng <famz@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Max Reitz <mreitz@redhat.com> Reviewed-by: Jeff Cody <jcody@redhat.com>
2016-04-19qemu-ga: do not run qga test when guest agent disabledYang Hongyang1-1/+3
When configure with --disable-guest-agent, make check will fail with: ERROR:tests/test-qga.c:74:fixture_setup: assertion failed (error == NULL): Failed to execute child process "/home/xx/qemu/qemu-ga" (No such file or directory) (g-exec-error-quark, 8) make: *** [check-tests/test-qga] Error 1 This check was commented out by bab47d9a75a. I think that was by mistake, because the commit message of that commit didn't mention this change. Signed-off-by: Yang Hongyang <hongyang.yang@easystack.cn> Cc: Gerd Hoffmann <kraxel@redhat.com> Cc: Michael S. Tsirkin <mst@redhat.com> Cc: Michael Roth <mdroth@linux.vnet.ibm.com> Cc: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com> Cc: qemu-stable@nongnu.org
2016-04-15qemu-iotests: 041: More robust assertion on quorum nodeFam Zheng2-8/+18
Block nodes are now assigned names automatically, therefore the test case is fragile in using fixed indices in result. Introduce a method in iotests.py and do the matching more sensibly. Signed-off-by: Fam Zheng <famz@redhat.com> Message-id: 1460518995-1338-1-git-send-email-famz@redhat.com Signed-off-by: Max Reitz <mreitz@redhat.com>
2016-04-15qemu-iotests: place valgrind log file in scratch dirSascha Silbe1-1/+1
Do not place the valgrind log file at a predictable path in a world-writable location. Use the common scratch directory (${TEST_DIR}) instead. Signed-off-by: Sascha Silbe <silbe@linux.vnet.ibm.com> Reviewed-by: Bo Tu <tubo@linux.vnet.ibm.com> Message-id: 1460472980-26319-5-git-send-email-silbe@linux.vnet.ibm.com Reviewed-by: Max Reitz <mreitz@redhat.com> Signed-off-by: Max Reitz <mreitz@redhat.com>
2016-04-15qemu-iotests: tests: do not set unused tmp variableSascha Silbe117-117/+0
The previous commit removed the last usage of ${tmp} inside the tests themselves; the only remaining users are sourced by check. So we can now drop this variable from the tests. Signed-off-by: Sascha Silbe <silbe@linux.vnet.ibm.com> Reviewed-by: Bo Tu <tubo@linux.vnet.ibm.com> Message-id: 1460472980-26319-4-git-send-email-silbe@linux.vnet.ibm.com Reviewed-by: Max Reitz <mreitz@redhat.com> Signed-off-by: Max Reitz <mreitz@redhat.com>
2016-04-15qemu-iotests: common.rc: drop unused _do()Sascha Silbe1-46/+0
_do() was never used and possibly creates temporary files at predictable, world-writable locations. Get rid of it. Signed-off-by: Sascha Silbe <silbe@linux.vnet.ibm.com> Reviewed-by: Bo Tu <tubo@linux.vnet.ibm.com> Message-id: 1460472980-26319-3-git-send-email-silbe@linux.vnet.ibm.com Reviewed-by: Max Reitz <mreitz@redhat.com> Signed-off-by: Max Reitz <mreitz@redhat.com>
2016-04-15qemu-iotests: drop unused _within_tolerance() filterSascha Silbe1-101/+0
_within_tolerance() isn't used anymore and possibly creates temporary files at predictable, world-writable locations. Get rid of it. If it's needed again in the future it can be revived easily and fixed up to use TEST_DIR and / or safely created temporary files. Signed-off-by: Sascha Silbe <silbe@linux.vnet.ibm.com> Reviewed-by: Bo Tu <tubo@linux.vnet.ibm.com> Message-id: 1460472980-26319-2-git-send-email-silbe@linux.vnet.ibm.com Reviewed-by: Max Reitz <mreitz@redhat.com> Signed-off-by: Max Reitz <mreitz@redhat.com>
2016-04-15block: Fix blk_aio_write_zeroes()Kevin Wolf2-3/+87
Commit 57d6a428 broke blk_aio_write_zeroes() because in some write functions in the call path don't have an explicit length argument but reuse qiov->size instead. Which is great, except that write_zeroes doesn't have a qiov, which this commit interprets as 0 bytes. Consequently, blk_aio_write_zeroes() didn't effectively do anything. This patch introduces an explicit acb->bytes in BlkAioEmAIOCB and uses that instead of acb->rwco.size. The synchronous version of the function is okay because it does pass a qiov (with the right size and a NULL pointer as its base). Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Max Reitz <mreitz@redhat.com>
2016-04-12qemu-iotests: iotests.py: get rid of __all__Sascha Silbe1-4/+0
The __all__ list contained a typo for as long as the iotests module existed. That typo prevented "from iotests import *" (which is the only case where iotests.__all__ is used at all) from ever working. The names used by iotests are highly prone to name collisions, so importing them all unconditionally is a bad idea anyway. Since __all__ is not adding any value, let's just get rid of it. Fixes: f345cfd0 ("qemu-iotests: add iotests Python module") Signed-off-by: Sascha Silbe <silbe@linux.vnet.ibm.com> Reviewed-by: Bo Tu <tubo@linux.vnet.ibm.com> Message-id: 1459848109-29756-8-git-send-email-silbe@linux.vnet.ibm.com Reviewed-by: Max Reitz <mreitz@redhat.com> Signed-off-by: Max Reitz <mreitz@redhat.com>
2016-04-12qemu-iotests: 068: don't require KVMSascha Silbe1-1/+1
None of the other test cases explicitly enable KVM and there's no obvious reason for 068 to require it. Drop this so all test cases can be executed in environments where KVM is not available (e.g. because the user doesn't have sufficient permissions to access /dev/kvm). Signed-off-by: Sascha Silbe <silbe@linux.vnet.ibm.com> Reviewed-by: Bo Tu <tubo@linux.vnet.ibm.com> Message-id: 1459848109-29756-6-git-send-email-silbe@linux.vnet.ibm.com Signed-off-by: Max Reitz <mreitz@redhat.com>
2016-04-12qemu-iotests: 148: properly skip test if quorum support is missingSascha Silbe2-3/+6
qemu-iotests test case 148 already had some code for skipping the test if quorum support is missing, but it didn't work in all cases. TestQuorumEvents.setUp() gets run before the actual test class (which contains the skipping code) and tries to start qemu with a drive using the quorum driver. For some reason this works fine when using qcow2, but fails for raw. As the entire test case requires quorum, just check for availability before even starting the test suite. Introduce a verify_quorum() function in iotests.py for this purpose so future test cases can make use of it. Signed-off-by: Sascha Silbe <silbe@linux.vnet.ibm.com> Reviewed-by: Bo Tu <tubo@linux.vnet.ibm.com> Message-id: 1459848109-29756-5-git-send-email-silbe@linux.vnet.ibm.com Reviewed-by: Max Reitz <mreitz@redhat.com> Signed-off-by: Max Reitz <mreitz@redhat.com>
2016-04-12qemu-iotests: iotests.VM: remove qtest socket on errorSascha Silbe1-1/+12
On error, VM.launch() cleaned up the monitor unix socket, but left the qtest unix socket behind. This caused the remaining sub-tests to fail with EADDRINUSE: +====================================================================== +ERROR: testQuorum (__main__.TestFifoQuorumEvents) +---------------------------------------------------------------------- +Traceback (most recent call last): + File "148", line 63, in setUp + self.vm.launch() + File "/home6/silbe/qemu/tests/qemu-iotests/iotests.py", line 247, in launch + self._qmp.accept() + File "/home6/silbe/qemu/tests/qemu-iotests/../../scripts/qmp/qmp.py", line 141, in accept + return self.__negotiate_capabilities() + File "/home6/silbe/qemu/tests/qemu-iotests/../../scripts/qmp/qmp.py", line 57, in __negotiate_capabilities + raise QMPConnectError +QMPConnectError + +====================================================================== +ERROR: testQuorum (__main__.TestQuorumEvents) +---------------------------------------------------------------------- +Traceback (most recent call last): + File "148", line 63, in setUp + self.vm.launch() + File "/home6/silbe/qemu/tests/qemu-iotests/iotests.py", line 244, in launch + self._qtest = qtest.QEMUQtestProtocol(self._qtest_path, server=True) + File "/home6/silbe/qemu/tests/qemu-iotests/../../scripts/qtest.py", line 33, in __init__ + self._sock.bind(self._address) + File "/usr/lib64/python2.7/socket.py", line 224, in meth + return getattr(self._sock,name)(*args) +error: [Errno 98] Address already in use Fix this by cleaning up both the monitor socket and the qtest socket iff they exist. Signed-off-by: Sascha Silbe <silbe@linux.vnet.ibm.com> Reviewed-by: Bo Tu <tubo@linux.vnet.ibm.com> Message-id: 1459848109-29756-4-git-send-email-silbe@linux.vnet.ibm.com Reviewed-by: Max Reitz <mreitz@redhat.com> Signed-off-by: Max Reitz <mreitz@redhat.com>
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