Commit Graph

76 Commits

Author SHA1 Message Date
Paolo Bonzini 59f971d451 qdev: print error message before aborting
qdev_prop_set_* functions are always called by machine init functions
that should know what they're doing, so they abort on error.  Still,
an assert(!errp) does not aid debugging.  Print an error before aborting.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2012-02-14 18:57:33 +00:00
Paolo Bonzini 11e35bfdc7 qom: use object_resolve_path_type for links
This allows to restrict partial matches to objects of the expected
type.  It will let people use bare names to reference drives
even though their name might be the same as a device's (e.g.
-drive id=hd0,if=none,... -device ...,drive=hd0,id=hd0).

As a useful byproduct, this fixes a problem with links of interface
type.  When a link property's type is an interface, the code expects
the implementation object (not the parent object) to be stored in the
variable.  The parent object does not contain the right vtable.

Reviewed-by: Anthony Liguori <aliguori@us.ibm.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2012-02-07 13:52:41 +01:00
Marcelo Tosatti 019b8cbf76 add QERR_BASE_NOT_FOUND
This qerror will be raised when a given streaming base (backing file)
cannot be found.

Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
Acked-by: Luiz Capitulino <lcapitulino@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2012-01-26 14:49:18 +01:00
Stefan Hajnoczi 12bd451fe0 qmp: add block_stream command
Add the block_stream command, which starts copy backing file contents
into the image file.  Also add the BLOCK_JOB_COMPLETED QMP event which
is emitted when image streaming completes.  Later patches add control
over the background copy speed, cancelation, and querying running
streaming operations.

Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
Acked-by: Luiz Capitulino <lcapitulino@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2012-01-26 14:49:14 +01:00
Stefan Hajnoczi 939a1cc399 block: use proper qerrors in qmp_block_resize
Let's report specific errors so that management tools and users can
identify the problem.

Two new qerrors are needed:
 * QERR_DEVICE_HAS_NO_MEDIUM for ENOMEDIUM
 * QERR_DEVICE_IS_READ_ONLY for EACCES

Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
2012-01-18 10:23:39 -02:00
Stefan Hajnoczi c1303596a1 qerror: restore alphabetical order over qerrors
Over time these must have gotten out of order.  Put everything back in
alphabetical order.

This is purely a clean up.  In practice nothing depends on the order.

Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
2012-01-18 10:23:39 -02:00
Stefan Hajnoczi 9737383beb qerror: add check-qerror.sh to verify alphabetical order
We're supposed to keep qerror definitions and table entries in
alphabetical order.  In practice this is not checked.

I haven't found a nice way to integrate this into the makefile yet but
we can at least have this script which verifies that qerrors are in
alphabetical order.

Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
2012-01-18 10:23:39 -02:00
Luiz Capitulino 903a881481 qerror: Extend QERR_DEVICE_ENCRYPTED
Include the name of the encrypted file.

Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
2012-01-18 10:23:39 -02:00
Paolo Bonzini 6aced82c4f qom: introduce QERR_PROPERTY_VALUE_OUT_OF_RANGE
This will be used when reject invalid values for integer fields that
are less than 64-bits wide.

Reviewed-by: Anthony Liguori <aliguori@us.ibm.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2011-12-19 10:27:34 -06:00
Anthony Liguori 44677ded43 qom: add new dynamic property infrastructure based on Visitors (v2)
qdev properties are settable only during construction and static to classes.
This isn't flexible enough for QOM.

This patch introduces a property interface for qdev that provides dynamic
properties that are tied to objects, instead of classes.  These properties are
Visitor based instead of string based too.

Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2011-12-15 09:20:47 -06:00
Michael Roth abd6cf6d8e guest agent: add RPC blacklist command-line option
This adds a command-line option, -b/--blacklist, that accepts a
comma-seperated list of RPCs to disable, or prints a list of
available RPCs if passed "?".

In consequence this also adds general blacklisting and RPC listing
facilities to the new QMP dispatch/registry facilities, should the
QMP monitor ever have a need for such a thing.

Ideally, to avoid support/compatability issues in the future,
blacklisting guest agent functionality will be the exceptional
case, but we add the functionality here to handle guest administrators
with specific requirements.

Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2011-12-12 17:06:21 -06:00
Luiz Capitulino 5889887366 QError: Introduce QERR_IO_ERROR
Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
2011-12-06 11:40:00 -02:00
Anthony Liguori eb5d5beaeb Merge remote-tracking branch 'kwolf/for-anthony' into staging 2011-12-05 09:39:25 -06:00
Zhi Yong Wu 727f005e6a hmp/qmp: add block_set_io_throttle
Signed-off-by: Zhi Yong Wu <wuzhy@linux.vnet.ibm.com>
Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2011-12-05 14:51:35 +01:00
Aneesh Kumar K.V e9a0152ba1 hw/9pfs: use migration blockers to prevent live migration when virtfs export path is mounted
Now when you try to migrate with VirtFS export path mounted, you get a proper QMP error:

(qemu) migrate tcp:localhost:4444
Migration is disabled when VirtFS export path '/tmp/' is mounted in the guest using mount_tag 'v_tmp'
(qemu)

Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
2011-12-04 22:35:28 +05:30
Anthony Liguori 1ed520c66e qed: add migration blocker (v2)
Now when you try to migrate with qed, you get:

(qemu) migrate tcp:localhost:1025
Block format 'qed' used by device 'ide0-hd0' does not support feature 'live migration'
(qemu)

Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2011-11-21 14:58:48 -06:00
Anthony Liguori 38e0735eb7 ivshmem: use migration blockers to prevent live migration in peer mode (v2)
Now when you try to migrate with ivshmem, you get a proper QMP error:

(qemu) migrate tcp:localhost:1025
Migration is disabled when using feature 'peer mode' in device 'ivshmem'
(qemu)

Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2011-11-21 14:58:35 -06:00
Anthony Liguori 2a82d936a2 qerror: add qerror_report_err()
This provides a bridge between Error (new error mechanism) and QError (old error
mechanism).  Errors can be propagated whereas QError cannot.

The minor evilness avoids layering violations.  Since QError should go away RSN,
it seems like a reasonable hack.

Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
2011-10-04 11:00:46 -03:00
Luiz Capitulino 6667b23f30 Monitor/QMP: Don't allow cont on bad VM state
We have two states where issuing cont before system_reset can
cause problems: RSTATE_SHUTDOWN (when -no-shutdown is used) and
RSTATE_PANICKED (which only happens with kvm).

This commit fixes that by doing the following when state is
RSTATE_SHUTDOWN or RSTATE_PANICKED:

 1. returning an error to the user/client if cont is issued
 2. automatically transition to RSTATE_PAUSED during system_reset

Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
2011-09-15 16:39:32 -03:00
Daniel P. Berrange 1366108981 Introduce a 'client_add' monitor command accepting an open FD
Allow client connections for VNC and socket based character
devices to be passed in over the monitor using SCM_RIGHTS.

One intended usage scenario is to start QEMU with VNC on a
UNIX domain socket. An unprivileged user which cannot access
the UNIX domain socket, can then connect to QEMU's VNC server
by passing an open FD to libvirt, which passes it onto QEMU.

 { "execute": "get_fd", "arguments": { "fdname": "myclient" } }
 { "return": {} }
 { "execute": "add_client", "arguments": { "protocol": "vnc",
                                           "fdname": "myclient",
                                           "skipauth": true } }
 { "return": {} }

In this case 'protocol' can be 'vnc' or 'spice', or the name
of a character device (eg from -chardev id=XXXX)

The 'skipauth' parameter can be used to skip any configured
VNC authentication scheme, which is useful if the mgmt layer
talking to the monitor has already authenticated the client
in another way.

* console.h: Define 'vnc_display_add_client' method
* monitor.c: Implement 'client_add' command
* qemu-char.c, qemu-char.h: Add 'qemu_char_add_client' method
* qerror.c, qerror.h: Add QERR_ADD_CLIENT_FAILED
* qmp-commands.hx: Declare 'client_add' command
* ui/vnc.c: Implement 'vnc_display_add_client' method

Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2011-07-23 11:19:02 -05:00
Michael Roth e3d4d25206 guest agent: add guest agent RPCs/commands
This adds the initial set of QMP/QAPI commands provided by the guest
agent:

guest-sync
guest-ping
guest-info
guest-shutdown
guest-file-open
guest-file-read
guest-file-write
guest-file-seek
guest-file-flush
guest-file-close
guest-fsfreeze-freeze
guest-fsfreeze-thaw
guest-fsfreeze-status

The input/output specification for these commands are documented in the
schema.

Example usage:

  host:
    qemu -device virtio-serial \
         -chardev socket,path=/tmp/vs0.sock,server,nowait,id=qga0 \
         -device virtserialport,chardev=qga0,name=org.qemu.quest_agent.0
         ...

    echo "{'execute':'guest-info'}" | socat stdio unix-connect:/tmp/qga0.sock

  guest:
    qemu-ga -m virtio-serial -p /dev/virtio-ports/org.qemu.guest_agent.0 \
            -p /var/run/qemu-guest-agent.pid -d

Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
Signed-off-by: Luiz Capitulino <lcapitulino@gmail.com>
2011-07-21 16:48:15 -03:00
Michael Roth c40cc0a0dd qapi: add QMP input visitor
A type of Visiter class that is used to walk a qobject's
structure and assign each entry to the corresponding native C type.
Command marshaling function will use this to pull out QMP command
parameters recieved over the wire and pass them as native arguments
to the corresponding C functions.

Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
Signed-off-by: Luiz Capitulino <lcapitulino@gmail.com>
2011-07-21 16:48:13 -03:00
Anthony Liguori 924f766af9 Merge remote-tracking branch 'qmp/for-anthony' into staging 2011-06-08 12:16:24 -05:00
Anthony Liguori ef749d07e7 json-parser: propagate error from parser
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2011-06-07 13:52:10 -05:00
Luiz Capitulino 87c2f59166 QError: Introduce qerror_format()
Will be used by new error propagation framework to convert Error objects
into human-readable form.

Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2011-06-07 13:52:10 -05:00
Lai Jiangshan 4c5a1e4db7 QMP: QError: New QERR_UNSUPPORTED
New QERR_UNSUPPORTED for unsupported commands or requests.

Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
2011-06-01 11:42:25 -03:00
Jes Sorensen 821601ea5b Make VNC support optional
Per default VNC is enabled.

Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2011-03-22 08:39:12 -05:00
Kevin Wolf f54e364112 qerror: Add QERR_UNKNOWN_BLOCK_FORMAT_FEATURE
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Anthony Liguori <aliguori@us.ibm.com>
2011-02-10 13:23:44 +01:00
Gerd Hoffmann 180c22e18b pci: allow devices being tagged as not hotpluggable.
This patch adds a field to PCIDeviceInfo to tag devices as being
not hotpluggable.  Any attempt to plug-in or -out such a device
will throw an error.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2011-01-10 13:29:16 +02:00
Stefan Weil 8b7968f7c4 Use GCC_FMT_ATTR (format checking)
Signed-off-by: Stefan Weil <weil@mail.berlios.de>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2010-10-03 06:34:51 +00:00
Stefan Weil e5924d8980 Replace most gcc format attributes by macro GCC_FMT_ATTR (format checking)
Since version 4.4.x, gcc supports additional format attributes.
    __attribute__ ((format (gnu_printf, 1, 2)))
should be used instead of
    __attribute__ ((format (printf, 1, 2))
because QEMU always uses standard format strings (even with mingw32).

The patch replaces format attribute printf / __printf__ by macro
GCC_FMT_ATTR which uses gnu_printf if supported.

It also removes an #ifdef __GNUC__ (not needed any longer).

Cc: Blue Swirl <blauwirbel@gmail.com>
Signed-off-by: Stefan Weil <weil@mail.berlios.de>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2010-10-03 06:34:36 +00:00
Amit Shah 8e84865e54 migration: Accept 'cont' only after successful incoming migration
When a 'cont' is issued on a VM that's just waiting for an incoming
migration, the VM reboots and boots into the guest, possibly corrupting
its storage since it could be shared with another VM running elsewhere.

Ensure that a VM started with '-incoming' is only run when an incoming
migration successfully completes.

A new qerror, QERR_MIGRATION_EXPECTED, is added to signal that 'cont'
failed due to no incoming migration has been attempted yet.

Reported-by: Laine Stump <laine@redhat.com>
Signed-off-by: Amit Shah <amit.shah@redhat.com>
Reviewed-by: Luiz Capitulino <lcapitulino@redhat.com>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-07-30 23:14:08 +02:00
Luiz Capitulino 60d76d7b07 QError: Introduce QERR_QMP_EXTRA_MEMBER
Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
2010-07-01 14:27:13 -03:00
Luiz Capitulino 41836a9f7e Fix qtypes' licenses
- Change from GPL to LGPL
- Add license text when missing
- Minor cosmetic changes to make all headers look the same

Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
2010-05-19 12:45:54 -03:00
Luiz Capitulino 7dfb61238a QError: New QERR_QMP_BAD_INPUT_OBJECT_MEMBER
Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
2010-04-26 11:17:02 -03:00
Markus Armbruster 5124eb5927 error: New QERR_DEVICE_IN_USE
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
2010-04-18 23:46:49 +02:00
Markus Armbruster 985a3e52f0 error: New QERR_INVALID_PARAMETER_VALUE
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
2010-04-18 23:46:48 +02:00
Markus Armbruster 7bc8401712 error: New QERR_DUPLICATE_ID
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
2010-04-18 23:46:48 +02:00
Markus Armbruster 9d494c4b4e error: Put error definitions back in alphabetical order
Add suitable comments to help keerp them in order.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
2010-04-18 23:46:48 +02:00
Markus Armbruster 0167f772d1 error: Move qerror_report() from qemu-error.[ch] to qerror.[ch]
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-03-27 14:30:38 +01:00
Shahar Havivi 25b28f01d8 QError: New QERR_DEVICE_NOT_ENCRYPTED
Signed-off-by: Shahar Havivi <shaharh@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2010-03-17 10:41:05 -05:00
Markus Armbruster fab5767f90 error: New QERR_NO_BUS_FOR_DEVICE 2010-03-16 17:45:34 +01:00
Markus Armbruster 4d9a1a1521 error: New QERR_DEVICE_INIT_FAILED 2010-03-16 17:45:34 +01:00
Markus Armbruster 8eae73b5d7 error: New QERR_BUS_NO_HOTPLUG 2010-03-16 17:45:34 +01:00
Markus Armbruster 56e9f56309 error: New QERR_BAD_BUS_FOR_DEVICE 2010-03-16 17:45:34 +01:00
Markus Armbruster 07574baf7b error: New QERR_DEVICE_NO_BUS 2010-03-16 17:45:34 +01:00
Markus Armbruster 1ae7871840 error: New QERR_DEVICE_MULTIPLE_BUSSES 2010-03-16 17:45:34 +01:00
Markus Armbruster 7bbd823701 error: New QERR_BUS_NOT_FOUND 2010-03-16 17:45:34 +01:00
Markus Armbruster 84745d68e7 error: New QERR_PROPERTY_VALUE_NOT_FOUND 2010-03-16 17:45:26 +01:00
Markus Armbruster 9c5eff958d error: New QERR_PROPERTY_VALUE_IN_USE 2010-03-16 17:45:26 +01:00