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2017-03-13block: Drop unmaintained 'archipelago' driverEric Blake9-1181/+4
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>
2017-03-13file-posix: Consider max_segments for BlockLimits.max_transferFam Zheng1-0/+47
BlockLimits.max_transfer can be too high without this fix, guest will encounter I/O error or even get paused with werror=stop or rerror=stop. The cause is explained below. Linux has a separate limit, /sys/block/.../queue/max_segments, which in the worst case can be more restrictive than the BLKSECTGET which we already consider (note that they are two different things). So, the failure scenario before this patch is: 1) host device has max_sectors_kb = 4096 and max_segments = 64; 2) guest learns max_sectors_kb limit from QEMU, but doesn't know max_segments; 3) guest issues e.g. a 512KB request thinking it's okay, but actually it's not, because it will be passed through to host device as an SG_IO req that has niov > 64; 4) host kernel doesn't like the segmenting of the request, and returns -EINVAL; This patch checks the max_segments sysfs entry for the host device and calculates a "conservative" bytes limit using the page size, which is then merged into the existing max_transfer limit. Guest will discover this from the usual virtual block device interfaces. (In the case of scsi-generic, it will be done in the INQUIRY reply interception in device model.) The other possibility is to actually propagate it as a separate limit, but it's not better. On the one hand, there is a big complication: the limit is per-LUN in QEMU PoV (because we can attach LUNs from different host HBAs to the same virtio-scsi bus), but the channel to communicate it in a per-LUN manner is missing down the stack; on the other hand, two limits versus one doesn't change much about the valid size of I/O (because guest has no control over host segmenting). Also, the idea to fall back to bounce buffering in QEMU, upon -EINVAL, was explored. Unfortunately there is no neat way to ensure the bounce buffer is less segmented (in terms of DMA addr) than the guest buffer. Practically, this bug is not very common. It is only reported on a Emulex (lpfc), so it's okay to get it fixed in the easier way. Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Fam Zheng <famz@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2017-03-13backup: allow target without .bdrv_get_infoVladimir Sementsov-Ogievskiy1-1/+11
Currently backup to nbd target is broken, as nbd doesn't have .bdrv_get_info realization. Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2017-03-09Merge remote-tracking branch 'remotes/kraxel/tags/pull-fixes-20170309-1' ↵Peter Maydell2-1/+6
into staging 2.9 bugfixes for ohci and qxl # gpg: Signature made Thu 09 Mar 2017 09:09:44 GMT # gpg: using RSA key 0x4CB6D8EED3E87138 # gpg: Good signature from "Gerd Hoffmann (work) <kraxel@redhat.com>" # gpg: aka "Gerd Hoffmann <gerd@kraxel.org>" # gpg: aka "Gerd Hoffmann (private) <kraxel@gmail.com>" # Primary key fingerprint: A032 8CFF B93A 17A7 9901 FE7D 4CB6 D8EE D3E8 7138 * remotes/kraxel/tags/pull-fixes-20170309-1: qxl: clear guest_cursor on QXL_CURSOR_HIDE ohci: relax link check Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2017-03-09qxl: clear guest_cursor on QXL_CURSOR_HIDEGerd Hoffmann1-0/+5
Make sure we don't leave guest_cursor pointing into nowhere. This might lead to (rare) live migration failures, due to target trying to restore the cursor from the stale pointer. Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=1421788 Reported-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> Message-id: 1488789111-27340-1-git-send-email-kraxel@redhat.com
2017-03-09ohci: relax link checkGerd Hoffmann1-1/+1
The strict td link limit added by commit "95ed569 usb: ohci: limit the number of link eds" causes problems with macos guests. Lets raise the limit. Reported-by: Programmingkid <programmingkidx@gmail.com> Reported-by: Howard Spoelstra <hsp.cat7@gmail.com> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Reviewed-by: BALATON Zoltan <balaton@eik.bme.hu> Reviewed-by: John Arbuckle <programmingkidx@gmail.com> Message-id: 1488876018-31576-1-git-send-email-kraxel@redhat.com
2017-03-08Merge remote-tracking branch 'remotes/kevin/tags/for-upstream' into stagingPeter Maydell11-326/+623
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>
2017-03-07Merge remote-tracking branch 'remotes/armbru/tags/pull-block-2017-02-28-v4' ↵Peter Maydell23-82/+1746
into staging block: Command line option -blockdev # gpg: Signature made Tue 07 Mar 2017 15:07:59 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-block-2017-02-28-v4: (24 commits) keyval: Support lists docs/qapi-code-gen.txt: Clarify naming rules qapi: Improve how keyval input visitor reports unexpected dicts block: Initial implementation of -blockdev qapi: New qobject_input_visitor_new_str() for convenience keyval: Restrict key components to valid QAPI names qapi: New parse_qapi_name() test-qapi-util: New, covering qapi/qapi-util.c monitor: Assert qmp_schema_json[] is sane test-visitor-serialization: Pass &error_abort to qobject_from_json() check-qjson: Test errors from qobject_from_json() block: More detailed syntax error reporting for JSON filenames qobject: Propagate parse errors through qobject_from_json() test-qobject-input-visitor: Abort earlier on bad test input qjson: Abort earlier on qobject_from_jsonf() misuse libqtest: Fix qmp() & friends to abort on JSON parse errors qobject: Propagate parse errors through qobject_from_jsonv() qapi: Factor out common qobject_input_get_keyval() qapi: Factor out common part of qobject input visitor creation test-keyval: Cover use with qobject input visitor ... Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2017-03-07keyval: Support listsMarkus Armbruster3-13/+298
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>
2017-03-07docs/qapi-code-gen.txt: Clarify naming rulesMarkus Armbruster1-22/+39
Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Kevin Wolf <kwolf@redhat.com> Message-Id: <1488317230-26248-24-git-send-email-armbru@redhat.com>
2017-03-07qapi: Improve how keyval input visitor reports unexpected dictsMarkus Armbruster1-4/+22
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>
2017-03-07block: Initial implementation of -blockdevMarkus Armbruster2-0/+46
The new command line option -blockdev works like QMP command blockdev-add. The option argument may be given in JSON syntax, exactly as in QMP. Example usage: -blockdev '{"node-name": "foo", "driver": "raw", "file": {"driver": "file", "filename": "foo.img"} }' The JSON argument doesn't exactly blend into the existing option syntax, so the traditional KEY=VALUE,... syntax is also supported, using dotted keys to do the nesting: -blockdev node-name=foo,driver=raw,file.driver=file,file.filename=foo.img This does not yet support lists, but that will be addressed shortly. Note that calling qmp_blockdev_add() (say via qmp_marshal_block_add()) right away would crash. We need to stash the configuration for later instead. This is crudely done, and bypasses QemuOpts, even though storing configuration is what QemuOpts is for. Need to revamp option infrastructure to support QAPI types like BlockdevOptions. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Message-Id: <1488317230-26248-22-git-send-email-armbru@redhat.com>
2017-03-07qapi: New qobject_input_visitor_new_str() for convenienceMarkus Armbruster2-0/+48
Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-Id: <1488317230-26248-21-git-send-email-armbru@redhat.com>
2017-03-07keyval: Restrict key components to valid QAPI namesMarkus Armbruster2-4/+18
Until now, key components are separated by '.'. This leaves little room for evolving the syntax, and is incompatible with the __RFQDN_ prefix convention for downstream extensions. Since key components will be commonly used as QAPI member names by the QObject input visitor, we can just as well borrow the QAPI naming rules here: letters, digits, hyphen and period starting with a letter, with an optional __RFQDN_ prefix for downstream extensions. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Kevin Wolf <kwolf@redhat.com> Message-Id: <1488317230-26248-20-git-send-email-armbru@redhat.com>
2017-03-07qapi: New parse_qapi_name()Markus Armbruster3-0/+83
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>
2017-03-07test-qapi-util: New, covering qapi/qapi-util.cMarkus Armbruster3-0/+55
Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Kevin Wolf <kwolf@redhat.com> Message-Id: <1488317230-26248-18-git-send-email-armbru@redhat.com>
2017-03-07monitor: Assert qmp_schema_json[] is saneMarkus Armbruster1-1/+1
qmp_query_qmp_schema() parses qmp_schema_json[] with qobject_from_json(). This must not fail, so pass &error_abort. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Kevin Wolf <kwolf@redhat.com> Message-Id: <1488317230-26248-17-git-send-email-armbru@redhat.com>
2017-03-07test-visitor-serialization: Pass &error_abort to qobject_from_json()Markus Armbruster1-1/+1
qmp_deserialize() calls qobject_from_json() ignoring errors. It passes the result to qobject_input_visitor_new(), which asserts it's not null. Therefore, we can just as well pass &error_abort to qobject_from_json(). Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Kevin Wolf <kwolf@redhat.com> Message-Id: <1488317230-26248-16-git-send-email-armbru@redhat.com>
2017-03-07check-qjson: Test errors from qobject_from_json()Markus Armbruster1-32/+56
Pass &error_abort with known-good input. Else pass &err and check what comes back. This demonstrates that the parser fails silently for many errors. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Kevin Wolf <kwolf@redhat.com> Message-Id: <1488317230-26248-15-git-send-email-armbru@redhat.com>
2017-03-07block: More detailed syntax error reporting for JSON filenamesMarkus Armbruster1-2/+7
Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Kevin Wolf <kwolf@redhat.com> Message-Id: <1488317230-26248-14-git-send-email-armbru@redhat.com>
2017-03-07qobject: Propagate parse errors through qobject_from_json()Markus Armbruster6-37/+37
The next few commits will put the errors to use where appropriate. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Message-Id: <1488317230-26248-13-git-send-email-armbru@redhat.com>
2017-03-07test-qobject-input-visitor: Abort earlier on bad test inputMarkus Armbruster1-1/+1
visitor_input_test_init_internal() parses test input with qobject_from_jsonv(), and asserts it succeeds. Pass &error_abort for good measure. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Kevin Wolf <kwolf@redhat.com> Message-Id: <1488317230-26248-12-git-send-email-armbru@redhat.com>
2017-03-07qjson: Abort earlier on qobject_from_jsonf() misuseMarkus Armbruster1-1/+1
Ignoring errors first, then asserting success is suboptimal. Pass &error_abort instead, so we abort earlier, and hopefully get more useful clues on what's wrong. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Kevin Wolf <kwolf@redhat.com> Message-Id: <1488317230-26248-11-git-send-email-armbru@redhat.com>
2017-03-07libqtest: Fix qmp() & friends to abort on JSON parse errorsMarkus Armbruster1-1/+2
Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Kevin Wolf <kwolf@redhat.com> Message-Id: <1488317230-26248-10-git-send-email-armbru@redhat.com>
2017-03-07qobject: Propagate parse errors through qobject_from_jsonv()Markus Armbruster4-7/+12
The next few commits will put the errors to use where appropriate. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Kevin Wolf <kwolf@redhat.com> Message-Id: <1488317230-26248-9-git-send-email-armbru@redhat.com>
2017-03-07qapi: Factor out common qobject_input_get_keyval()Markus Armbruster1-52/+35
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 Armbruster1-25/+16
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>
2017-03-07test-keyval: Cover use with qobject input visitorMarkus Armbruster1-0/+312
Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Kevin Wolf <kwolf@redhat.com> Message-Id: <1488317230-26248-6-git-send-email-armbru@redhat.com>
2017-03-07qapi: qobject input visitor variant for use with keyval_parse()Daniel P. Berrange3-5/+358
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>
2017-03-07keyval: New keyval_parse()Markus Armbruster6-0/+419
keyval_parse() parses KEY=VALUE,... into a QDict. Works like qemu_opts_parse(), except: * Returns a QDict instead of a QemuOpts (d'oh). * Supports nesting, unlike QemuOpts: a KEY is split into key fragments at '.' (dotted key convention; the block layer does something similar on top of QemuOpts). The key fragments are QDict keys, and the last one's value is updated to VALUE. * Each key fragment may be up to 127 bytes long. qemu_opts_parse() limits the entire key to 127 bytes. * Overlong key fragments are rejected. qemu_opts_parse() silently truncates them. * Empty key fragments are rejected. qemu_opts_parse() happily accepts empty keys. * It does not store the returned value. qemu_opts_parse() stores it in the QemuOptsList. * It does not treat parameter "id" specially. qemu_opts_parse() ignores all but the first "id", and fails when its value isn't id_wellformed(), or duplicate (a QemuOpts with the same ID is already stored). It also screws up when a value contains ",id=". * Implied value is not supported. qemu_opts_parse() desugars "foo" to "foo=on", and "nofoo" to "foo=off". * An implied key's value can't be empty, and can't contain ','. I intend to grow this into a saner replacement for QemuOpts. It'll take time, though. Note: keyval_parse() provides no way to do lists, and its key syntax is incompatible with the __RFQDN_ prefix convention for downstream extensions, because it blindly splits at '.', even in __RFQDN_. Both issues will be addressed later in the series. Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-Id: <1488317230-26248-4-git-send-email-armbru@redhat.com>
2017-03-07tests: Fix gcov-files-test-qemu-opts-y, gcov-files-test-logging-yMarkus Armbruster1-2/+2
Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Kevin Wolf <kwolf@redhat.com> Message-Id: <1488317230-26248-3-git-send-email-armbru@redhat.com>
2017-03-07test-qemu-opts: Cover qemu_opts_parse() of "no"Markus Armbruster1-0/+5
qemu_opts_parse() interprets "no" as negated empty key. Consistent with its acceptance of empty keys elsewhere, whatever that's worth. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Kevin Wolf <kwolf@redhat.com> Message-Id: <1488317230-26248-2-git-send-email-armbru@redhat.com>
2017-03-07disas/arm: Avoid unintended sign extensionPeter Maydell1-2/+2
When assembling 'given' from the instruction bytes, C's integer promotion rules mean we may promote an unsigned char to a signed integer before shifting it, and then sign extend to a 64-bit long, which can set the high bits of the long. The code doesn't in fact care about the high bits if the long is 64 bits, but this is surprising, so don't do it. (Spotted by Coverity, CID 1005404.) Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Message-id: 1488556233-31246-7-git-send-email-peter.maydell@linaro.org
2017-03-07disas/cris: Avoid unintended sign extensionPeter Maydell1-2/+2
In the cris disassembler we were using 'unsigned long' to calculate addresses which are supposed to be 32 bits. This meant that we might accidentally sign extend or calculate a value that was outside the 32 bit range of the guest CPU. Use 'uint32_t' instead so we give the right answers on 64-bit hosts. (Spotted by Coverity, CID 1005402, 1005403.) Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Message-id: 1488556233-31246-6-git-send-email-peter.maydell@linaro.org
2017-03-07disas/microblaze: Avoid unintended sign extensionPeter Maydell1-2/+4
In read_insn_microblaze() we assemble 4 bytes into an 'unsigned long'. If 'unsigned long' is 64 bits and the high byte has its top bit set, then C's implicit conversion from 'unsigned char' to 'int' for the shift will result in an unintended sign extension which sets the top 32 bits in 'inst'. Add casts to prevent this. (Spotted by Coverity, CID 1005401.) Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com> Message-id: 1488556233-31246-5-git-send-email-peter.maydell@linaro.org
2017-03-07disas/m68k: Avoid unintended sign extension in get_field()Peter Maydell1-2/+3
In get_field(), we take an 'unsigned char' value and shift it left, which implicitly promotes it to 'signed int', before ORing it into an 'unsigned long' type. If 'unsigned long' is 64 bits then this will result in a sign extension and the top 32 bits of the result will be 1s. Add explicit casts to unsigned long before shifting to prevent this. (Spotted by Coverity, CID 715697.) Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Laurent Vivier <laurent@vivier.eu> Message-id: 1488556233-31246-4-git-send-email-peter.maydell@linaro.org
2017-03-07disas/i386: Avoid NULL pointer dereference in error casePeter Maydell1-1/+1
In a code path where we hit an internal disassembler error, execution would subsequently attempt to dereference a NULL pointer. This should never happen, but avoid the crash. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Message-id: 1488556233-31246-3-git-send-email-peter.maydell@linaro.org
2017-03-07disas/hppa: Remove dead codePeter Maydell1-2/+1
Coverity complains (CID 1302705) that the "fr0" part of the ?: in fput_fp_reg_r() is dead. This looks like cut-n-paste error from fput_fp_reg(); delete the dead code. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Message-id: 1488556233-31246-2-git-send-email-peter.maydell@linaro.org
2017-03-07commit: Don't use error_abort in commit_startFam Zheng1-2/+14
bdrv_set_backing_hd failure needn't be abort. Since we already have error parameter, use it. Signed-off-by: Fam Zheng <famz@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2017-03-07block: Don't use error_abort in blk_new_openFam Zheng1-1/+6
We have an errp and bdrv_root_attach_child can fail permission check, error_abort is not the best choice here. Signed-off-by: Fam Zheng <famz@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2017-03-07sheepdog: Support blockdev-addMarkus Armbruster1-3/+24
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 SocketAddressFlat's variant tcp to inetMarkus Armbruster2-32/+35
QAPI type SocketAddressFlat differs from SocketAddress pointlessly: the discriminator value for variant InetSocketAddress is 'tcp' instead of 'inet'. Rename. The type is so far only used by the Gluster block drivers. Take care to keep 'tcp' working in things like -drive's file.server.0.type=tcp. The "gluster+tcp" URI scheme in pseudo-filenames stays the same. blockdev-add changes, but it has changed incompatibly since 2.8 already. 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 Armbruster3-64/+58
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>
2017-03-07gluster: Plug memory leaks in qemu_gluster_parse_json()Markus Armbruster1-11/+11
To reproduce, run $ valgrind qemu-system-x86_64 --nodefaults -S --drive driver=gluster,volume=testvol,path=/a/b/c,server.0.type=xxx Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Niels de Vos <ndevos@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2017-03-07gluster: Don't duplicate qapi-util.c's qapi_enum_parse()Markus Armbruster1-21/+9
Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Niels de Vos <ndevos@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2017-03-07gluster: Drop assumptions on SocketTransport namesMarkus Armbruster1-4/+2
qemu_gluster_glfs_init() passes the names of QAPI enumeration type SocketTransport to glfs_set_volfile_server(). Works, because they were chosen to match. But the coupling is artificial. Use the appropriate literal strings instead. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Niels de Vos <ndevos@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2017-03-07sheepdog: Implement bdrv_parse_filename()Markus Armbruster1-56/+174
This permits configuration with driver-specific options in addition to pseudo-filename parsed as URI. For instance, --drive driver=sheepdog,host=fido,vdi=dolly instead of --drive driver=sheepdog,file=sheepdog://fido/dolly It's also a first step towards supporting 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>
2017-03-07sheepdog: Use SocketAddress and socket_connect()Markus Armbruster1-23/+30
sd_parse_uri() builds a string from host and port parts for inet_connect(). inet_connect() parses it into host, port and options. Whether this gets exactly the same host, port and no options for all inputs is not obvious. Cut out the string middleman and build a SocketAddress for socket_connect() instead. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2017-03-07sheepdog: Report errors in pseudo-filename more usefullyMarkus Armbruster1-29/+59
Errors in the pseudo-filename are all reported with the same laconic "Can't parse filename" message. Add real error reporting, such as: $ qemu-system-x86_64 --drive driver=sheepdog,filename=sheepdog:/// qemu-system-x86_64: --drive driver=sheepdog,filename=sheepdog:///: missing file path in URI $ qemu-system-x86_64 --drive driver=sheepdog,filename=sheepgod:///vdi qemu-system-x86_64: --drive driver=sheepdog,filename=sheepgod:///vdi: URI scheme must be 'sheepdog', 'sheepdog+tcp', or 'sheepdog+unix' $ qemu-system-x86_64 --drive driver=sheepdog,filename=sheepdog+unix:///vdi?socke=sheepdog.sock qemu-system-x86_64: --drive driver=sheepdog,filename=sheepdog+unix:///vdi?socke=sheepdog.sock: unexpected query parameters The code to translate legacy syntax to URI fails to escape URI meta-characters. The new error messages are misleading then. Replace them by the old "Can't parse filename" message. "Internal error" would be more honest. Anyway, no worse than before. Also add a FIXME comment. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Reviewed-by: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2017-03-07sheepdog: Don't truncate long VDI name in _open(), _create()Markus Armbruster1-1/+4
sd_parse_uri() truncates long VDI names silently. Reject them instead. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
generated by cgit v1.1 at 2025-01-27 16:13:12 +0000