Since the introduction of network events, any driver that uses
a single event state object to track both domain and network
events should not include 'domain' in the name of that object.
* src/test/test_driver.c (_testConn):
s/domainEventState/eventState/, and fix all callers.
* src/remote/remote_driver.c (private_data): Likewise.
(remoteDomainEventQueue): Rename to remoteEventQueue.
(remoteDomainEvents): Rename to remoteEvents.
Signed-off-by: Eric Blake <eblake@redhat.com>
Prior to this patch, an attempt to register an event without an
event loop started results in the vague:
libvirt: Remote Driver error : adding cb to list
Now it gives the much nicer:
libvirt: error : internal error: could not initialize domain event timer
This also avoids hiding other reasonable error messages, such as
attempts to register a duplicate callback or OOM errors.
* src/remote/remote_driver.c (remoteConnectNetworkEventRegisterAny)
(remoteConnectDomainEventRegister)
(remoteConnectDomainEventRegisterAny): Preserve more detailed error.
Signed-off-by: Eric Blake <eblake@redhat.com>
While the public API & wire protocol included the 'detail'
arg for network lifecycle events, the internal event handling
code did not process it. This meant that if a future libvirtd
server starts sending non-0 'detail' args, the current libvirt
client will not process them.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
With some authentication mechanism (PLAIN for example), sasl_client_start()
can return SASL_OK, which translates to virNetSASLSessionClientStart()
returning VIR_NET_SASL_COMPLETE.
cyrus-sasl documentation is a bit vague as to what to do in such situation,
but upstream clarified this a bit in
http://asg.andrew.cmu.edu/archive/message.php?mailbox=archive.cyrus-sasl&msg=10104
When we got VIR_NET_SASL_COMPLETE after virNetSASLSessionClientStart() and
if the remote also tells us that authentication is complete, then we should
end the authentication procedure rather than forcing a call to
virNetSASLSessionClientStep(). Without this patch, when trying to use SASL
PLAIN, I get:
error :authentication failed : Failed to step SASL negotiation: -1
(SASL(-1): generic failure: Unable to find a callback: 32775)
This patch is based on a spice-gtk patch by Dietmar Maurer.
The array of sasl_callback_t callbacks which is passed to sasl_client_new()
must be kept alive as long as the created sasl_conn_t object is alive as
cyrus-sasl uses this structure internally for things like logging, so
the memory used for callbacks must only be freed after sasl_dispose() has
been called.
During testing of successful SASL logins with
virsh -c qemu+tls:///system list --all
I've been getting invalid read reports from valgrind
==9237== Invalid read of size 8
==9237== at 0x6E93B6F: _sasl_getcallback (common.c:1745)
==9237== by 0x6E95430: _sasl_log (common.c:1850)
==9237== by 0x16593D87: digestmd5_client_mech_dispose (digestmd5.c:4580)
==9237== by 0x6E91653: client_dispose (client.c:332)
==9237== by 0x6E9476A: sasl_dispose (common.c:851)
==9237== by 0x4E225A1: virNetSASLSessionDispose (virnetsaslcontext.c:678)
==9237== by 0x4CBC551: virObjectUnref (virobject.c:262)
==9237== by 0x4E254D1: virNetSocketDispose (virnetsocket.c:1042)
==9237== by 0x4CBC551: virObjectUnref (virobject.c:262)
==9237== by 0x4E2701C: virNetSocketEventFree (virnetsocket.c:1794)
==9237== by 0x4C965D3: virEventPollCleanupHandles (vireventpoll.c:583)
==9237== by 0x4C96987: virEventPollRunOnce (vireventpoll.c:652)
==9237== by 0x4C94730: virEventRunDefaultImpl (virevent.c:274)
==9237== by 0x12C7BA: vshEventLoop (virsh.c:2407)
==9237== by 0x4CD3D04: virThreadHelper (virthreadpthread.c:161)
==9237== by 0x7DAEF32: start_thread (pthread_create.c:309)
==9237== by 0x8C86EAC: clone (clone.S:111)
==9237== Address 0xe2d61b0 is 0 bytes inside a block of size 168 free'd
==9237== at 0x4A07577: free (in /usr/lib64/valgrind/vgpreload_memcheck-amd64-linux.so)
==9237== by 0x4C73827: virFree (viralloc.c:580)
==9237== by 0x4DE4BC7: remoteAuthSASL (remote_driver.c:4219)
==9237== by 0x4DE33D0: remoteAuthenticate (remote_driver.c:3639)
==9237== by 0x4DDBFAA: doRemoteOpen (remote_driver.c:832)
==9237== by 0x4DDC8DC: remoteConnectOpen (remote_driver.c:1031)
==9237== by 0x4D8595F: do_open (libvirt.c:1239)
==9237== by 0x4D863F3: virConnectOpenAuth (libvirt.c:1481)
==9237== by 0x12762B: vshReconnect (virsh.c:337)
==9237== by 0x12C9B0: vshInit (virsh.c:2470)
==9237== by 0x12E9A5: main (virsh.c:3338)
This commit changes virNetSASLSessionNewClient() to take ownership of the SASL
callbacks. Then we can free them in virNetSASLSessionDispose() after the corresponding
sasl_conn_t has been freed.
When testing SASL authentication over TLS with
virsh -c qemu+tls:///system list --all
I got this valgrind trace after entering wrong credentials:
==30540== 26,903 (88 direct, 26,815 indirect) bytes in 1 blocks are definitely lost in loss record 289 of 293
==30540== at 0x4A081D4: calloc (in /usr/lib64/valgrind/vgpreload_memcheck-amd64-linux.so)
==30540== by 0x4C7379A: virAllocVar (viralloc.c:558)
==30540== by 0x4CBC178: virObjectNew (virobject.c:190)
==30540== by 0x4CBC329: virObjectLockableNew (virobject.c:216)
==30540== by 0x4E2D003: virNetTLSContextNew (virnettlscontext.c:719)
==30540== by 0x4E2DC3F: virNetTLSContextNewPath (virnettlscontext.c:930)
==30540== by 0x4E2DD5B: virNetTLSContextNewClientPath (virnettlscontext.c:957)
==30540== by 0x4DDB618: doRemoteOpen (remote_driver.c:627)
==30540== by 0x4DDC8BA: remoteConnectOpen (remote_driver.c:1031)
==30540== by 0x4D8595F: do_open (libvirt.c:1239)
==30540== by 0x4D863F3: virConnectOpenAuth (libvirt.c:1481)
==30540== by 0x12762B: vshReconnect (virsh.c:337)
==30540== by 0x12C9B0: vshInit (virsh.c:2470)
==30540== by 0x12E9A5: main (virsh.c:3338)
Most of our code base uses space after comma but not before;
fix the remaining uses before adding a syntax check.
* src/lxc/lxc_container.c: Consistently use commas.
* src/openvz/openvz_driver.c: Likewise.
* src/openvz/openvz_util.c: Likewise.
* src/remote/remote_driver.c: Likewise.
* src/test/test_driver.c: Likewise.
Signed-off-by: Eric Blake <eblake@redhat.com>
Most of the usage of getuid()/getgid() is in cases where we are
considering what privileges we have. As such the code should be
using the effective IDs, not real IDs.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
We don't want setuid programs automatically spawning libvirtd,
so disable any use of autostart when setuid.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
We don't know enough about quality of external libraries used
for non-UNIX transports, nor do we want to spawn external
commands when setuid. Restrict to the bare minimum which is
UNIX transport for local usage. Users shouldn't need to be
running setuid if connecting to remote hypervisors in any
case.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Unconditional use of getenv is not secure in setuid env.
While not all libvirt code runs in a setuid env (since
much of it only exists inside libvirtd) this is not always
clear to developers. So make all the code paranoid, even
if it only ever runs inside libvirtd.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
The virConnectDomainXMLToNative API should require 'connect:write'
not 'connect:read', since it will trigger execution of the QEMU
binaries listed in the XML.
Also make virConnectDomainXMLFromNative API require a full
read-write connection and 'connect:write' permission. Although the
current impl doesn't trigger execution of QEMU, we should not
rely on that impl detail from an API permissioning POV.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Introduced by 7b87a3
When I quit the process which only register VIR_DOMAIN_EVENT_ID_REBOOT,
I got error like:
"libvirt: XML-RPC error : internal error: domain event 0 not registered".
Then I add the following code, it fixed.
Signed-off-by: Zhou Yimin <zhouyimin@huawei.com>
Signed-off-by: Eric Blake <eblake@redhat.com>
https://bugzilla.redhat.com/show_bug.cgi?id=1012818
Commit 6d7d0b1869 (in 1.1.2) added bounds
checking to virDomainGetJobStats. But even at that time the API was able
to return 20 parameters while the limit was set to 16.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
The polkit access driver used the wrong permission names for checks
on storage pools, volumes and node devices. This led to them always
being denied access.
The 'dettach' permission was also mis-spelt and should have been
'detach'. While permission names are ABI sensitive, the fact that
the code used the wrong object name for checking node device
permissions, means that no one could have used the mis-spelt
'dettach' permission.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
The return values for the virConnectListAllSecrets call were not
bounds checked. This is a robustness issue for clients if
something where to cause corruption of the RPC stream data.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
The return values for the virConnectListAllNWFilters call were not
bounds checked. This is a robustness issue for clients if
something where to cause corruption of the RPC stream data.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
The return values for the virConnectListAllNodeDevices call were not
bounds checked. This is a robustness issue for clients if
something where to cause corruption of the RPC stream data.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
The return values for the virConnectListAllInterfaces call were not
bounds checked. This is a robustness issue for clients if
something where to cause corruption of the RPC stream data.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
The return values for the virConnectListAllNetworks call were not
bounds checked. This is a robustness issue for clients if
something where to cause corruption of the RPC stream data.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
The return values for the virStoragePoolListAllVolumes call were not
bounds checked. This is a robustness issue for clients if
something where to cause corruption of the RPC stream data.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
The return values for the virConnectListAllStoragePools call were not
bounds checked. This is a robustness issue for clients if
something where to cause corruption of the RPC stream data.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
The return values for the virConnectListAllDomains call were not
bounds checked. This is a robustness issue for clients if
something where to cause corruption of the RPC stream data.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
The return values for the virDomain{SnapshotListAllChildren,ListAllSnapshots}
calls were not bounds checked. This is a robustness issue for clients if
something where to cause corruption of the RPC stream data.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
The return values for the virDomainGetJobStats call were not
bounds checked. This is a robustness issue for clients if
something where to cause corruption of the RPC stream data.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
The parameters for the virDomainMigrate*Params RPC calls were
not bounds checks, meaning a malicious client can cause libvirtd
to consume arbitrary memory
This issue was introduced in the 1.1.0 release of libvirt
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Valgrind defects memory error:
==16759== 1 errors in context 1 of 8:
==16759== Invalid free() / delete / delete[] / realloc()
==16759== at 0x4A074C4: free (in /usr/lib64/valgrind/vgpreload_memcheck-amd64-linux.so)
==16759== by 0x83CD329: xdr_string (in /usr/lib64/libc-2.17.so)
==16759== by 0x4D93E4D: xdr_remote_nonnull_string (remote_protocol.c:31)
==16759== by 0x4D94350: xdr_remote_nonnull_domain (remote_protocol.c:58)
==16759== by 0x4D976C8: xdr_remote_domain_create_with_flags_ret (remote_protocol.c:1762)
==16759== by 0x83CC734: xdr_free (in /usr/lib64/libc-2.17.so)
==16759== by 0x4D7F1E0: remoteDomainCreateWithFlags (remote_driver.c:2441)
==16759== by 0x4D4BF17: virDomainCreateWithFlags (libvirt.c:9499)
==16759== by 0x13127A: cmdStart (virsh-domain.c:3376)
==16759== by 0x12BF83: vshCommandRun (virsh.c:1751)
==16759== by 0x126FFB: main (virsh.c:3205)
==16759== Address 0xe1394a0 is not stack'd, malloc'd or (recently) free'd
==16759== 1 errors in context 2 of 8:
==16759== Conditional jump or move depends on uninitialised value(s)
==16759== at 0x4A07477: free (in /usr/lib64/valgrind/vgpreload_memcheck-amd64-linux.so)
==16759== by 0x83CD329: xdr_string (in /usr/lib64/libc-2.17.so)
==16759== by 0x4D93E4D: xdr_remote_nonnull_string (remote_protocol.c:31)
==16759== by 0x4D94350: xdr_remote_nonnull_domain (remote_protocol.c:58)
==16759== by 0x4D976C8: xdr_remote_domain_create_with_flags_ret (remote_protocol.c:1762)
==16759== by 0x83CC734: xdr_free (in /usr/lib64/libc-2.17.so)
==16759== by 0x4D7F1E0: remoteDomainCreateWithFlags (remote_driver.c:2441)
==16759== by 0x4D4BF17: virDomainCreateWithFlags (libvirt.c:9499)
==16759== by 0x13127A: cmdStart (virsh-domain.c:3376)
==16759== by 0x12BF83: vshCommandRun (virsh.c:1751)
==16759== by 0x126FFB: main (virsh.c:3205)
==16759== Uninitialised value was created by a stack allocation
==16759== at 0x4D7F120: remoteDomainCreateWithFlags (remote_driver.c:2423)
How to reproduce?
# virsh start <domain> --paused
RHBZ: https://bugzilla.redhat.com/show_bug.cgi?id=994855
Signed-off-by: Alex Jia <ajia@redhat.com>
In the following commit:
commit 03d813bbcd
Author: Marek Marczykowski <marmarek@invisiblethingslab.com>
Date: Thu May 23 02:01:30 2013 +0200
remote: fix dom->id after virDomainCreateWithFlags
The virDomainCreateWithFlags remote client helper was made to
invoke REMOTE_PROC_DOMAIN_LOOKUP_BY_UUID to refresh the 'id'
of the domain, following the pattern used in the previous
virDomainCreate method impl.
The remote protocol for virDomainCreateWithFlags though did
actually fix the design flaw in virDomainCreate, by directly
returning the new domain info. For some reason, this data was
never used. So we can just use that data now instead.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Since they make use of file descriptor passing, the remote protocol
methods for virDomainCreate{XML}WithFiles must be written by hand.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
This patch enables the password authentication in the libssh2 connection
driver. There are a few benefits to this step:
1) Hosts with challenge response authentication will now be supported
with the libssh2 connection driver.
2) Credential for hosts can now be stored in the authentication
credential config file
Convert the type of loop iterators named 'i', 'j', k',
'ii', 'jj', 'kk', to be 'size_t' instead of 'int' or
'unsigned int', also santizing 'ii', 'jj', 'kk' to use
the normal 'i', 'j', 'k' naming
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Found while trying to cross-compile to mingw:
CC libvirt_driver_remote_la-remote_driver.lo
../../src/remote/remote_driver.c: In function 'doRemoteOpen':
../../src/remote/remote_driver.c:487:23: error: variable 'verify' set but not used [-Werror=unused-but-set-variable]
* src/remote/remote_driver.c (doRemoteOpen): Also ignore 'verify'.
Signed-off-by: Eric Blake <eblake@redhat.com>
Introduce annotations to all RPC messages to declare what
access control checks are required. There are two new
annotations defined:
@acl: <object>:<permission>
@acl: <object>:<permission>:<flagname>
Declare the access control requirements for the API. May be repeated
multiple times, if multiple rules are required.
<object> is one of 'connect', 'domain', 'network', 'storagepool',
'interface', 'nodedev', 'secret'.
<permission> is one of the permissions in access/viraccessperm.h
<flagname> indicates the rule only applies if the named flag
is set in the API call
@aclfilter: <object>:<permission>
Declare an access control filter that will be applied to a list
of objects being returned by an API. This allows the returned
list to be filtered to only show those the user has permissions
against
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Without the socket path explicitly specified, the remote driver tried to
connect to the "/system" instance socket even if "/session" was
specified in the uri. With this patch this configuration now produces an
error.
It is still possible to initiate a session connection with specifying
the path to the socket manually and also manually starting the session
daemon. This was also possible prior to this patch,
This is a minimal fix. We may decide to support remote session
connections using ssh but this will require changes to the remote driver
code so this fix shouldn't cause regressions in the case we decide to do
that.
The RPC limits for cpu maps didn't allow to use libvirt on ultra big
boxes. This patch increases size of the limits to support a maximum of
16384 cpus on the host with a maximum of 4096 cpus per guest.
The full cpu map of such a system takes 8 megabytes and the map for
vcpu pinning is 2 kilobytes long.
