The virtlxcd daemon will be responsible for providing the lxc API
driver functionality. The lxc driver is still loaded by the main
libvirtd daemon at this stage, so virtlxcd must not be running at
the same time.
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
The virtqemud daemon will be responsible for providing the qemu API
driver functionality. The qemu driver is still loaded by the main
libvirtd daemon at this stage, so virtqemud must not be running at
the same time.
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
The virtxend daemon will be responsible for providing the libxl API
driver functionality. The libxl driver is still loaded by the main
libvirtd daemon at this stage, so virtxend must not be running at
the same time.
This naming is slightly different than other drivers. With the libxl
driver, the user still has a 'xen:///system' URI, and we provide it
in a libvirt-daemon-xen RPM, which pulls in a
libvirt-daemon-driver-libxl RPM.
Arguably we could rename the libxl driver to "xen" since it is the
only xen driver we have these days, and that matches how we expose it
to users in the URI naming.
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
The virtnwfilterd daemon will be responsible for providing the nwfilter API
driver functionality. The nwfilter driver is still loaded by the main
libvirtd daemon at this stage, so virtnwfilterd must not be running at
the same time.
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
The virtnodedevd daemon will be responsible for providing the nodedev API
driver functionality. The nodedev driver is still loaded by the main
libvirtd daemon at this stage, so virtnodedevd must not be running at
the same time.
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
The virtstoraged daemon will be responsible for providing the storage API
driver functionality. The storage driver is still loaded by the main
libvirtd daemon at this stage, so virtstoraged must not be running at
the same time.
Reviewed-by: Christophe de Dinechin <dinechin@redhat.com>
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
The virtinterfaced daemon will be responsible for providing the interface API
driver functionality. The interface driver is still loaded by the main
libvirtd daemon at this stage, so virtinterfaced must not be running at
the same time.
Reviewed-by: Christophe de Dinechin <dinechin@redhat.com>
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
The virtnetworkd daemon will be responsible for providing the network API
driver functionality. The network driver is still loaded by the main
libvirtd daemon at this stage, so virtnetworkd must not be running at
the same time.
Reviewed-by: Christophe de Dinechin <dinechin@redhat.com>
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
The virtsecretd daemon will be responsible for providing the secret API
driver functionality. The secret driver is still loaded by the main
libvirtd daemon at this stage, so virtsecretd must not be running at
the same time.
Reviewed-by: Christophe de Dinechin <dinechin@redhat.com>
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
The libvirtd daemon provides the traditional libvirt experience where
all the drivers are in a single daemon, and is accessible over both
local UNIX sockets and remote IP sockets.
In the new world we're having a set of per-driver daemons which will
primarily be accessed locally via their own UNIX sockets.
We still, however, need to allow for case of applications which will
connect to libvirt remotely. These remote connections can be done as
TCP/TLS sockets, or by SSH tunnelling to the UNIX socket.
In the later case, the old libvirt.so clients will only know about
the path to the old libvirtd socket /var/run/libvirt/libvirt-sock,
and not the new driver sockets /var/run/libvirt/virtqemud-sock.
It is also not desirable to expose the main driver specific daemons
over IP directly to minimize their attack service.
Thus the virtproxyd daemon steps into place, to provide TCP/TLS sockets,
and back compat for the old libvirtd UNIX socket path(s). It will then
forward all RPC calls made to the appropriate driver specific daemon.
Essentially it is equivalent to the old libvirtd with absolutely no
drivers registered except for the remote driver (and other stateless
drivers in libvirt.so).
We could have modified libvirtd so none of the drivers are registed
to get the same end result. We could even add a libvirtd.conf parameter
to control whether the drivers are loaded to enable users to switch back
to the old world if we discover bugs in the split-daemon model. Using a
new daemon though has some advantages
- We can make virtproxyd and the virtXXXd per-driver daemons all
have "Conflicts: libvirtd.service" in their systemd unit files.
This will guarantee that libvirtd is never started at the same
time, as this would result in two daemons running the same driver.
Fortunately drivers use locking to protect themselves, but it is
better to avoid starting a daemon we know will conflict.
- It allows us to break CLI compat to remove the --listen parameter.
Both listen_tcp and listen_tls parameters in /etc/libvirtd/virtd.conf
will default to zero. Either TLS or TCP can be enabled exclusively
though virtd.conf without requiring the extra step of adding --listen.
- It allows us to set a strict SELinux policy over virtproxyd. For
back compat the libvirtd policy must continue to allow all drivers
to run. We can't easily give a second policy to libvirtd which
locks it down. By introducing a new virtproxyd we can set a strict
policy for that daemon only.
- It gets rid of the weird naming of having a daemon with "lib" in
its name. Now all normal daemons libvirt ships will have "virt"
as their prefix not "libvirt".
- Distros can more easily choose their upgrade path. They can
ship both sets of daemons in their packages, and choose to
either enable libvirtd, or enable the per-driver daemons and
virtproxyd out of the box. Users can easily override this if
desired by just tweaking which systemd units are active.
After some time we can deprecate use of libvirtd and after some more
time delete it entirely, leaving us in a pretty world filled with
prancing unicorns.
The main downside with introducing a new daemon, and with the
per-driver daemons in general, is figuring out the correct upgrade
path.
The conservative option is to leave libvirtd running if it was
an existing installation. Only use the new daemons & virtproxyd
on completely new installs.
The aggressive option is to disable libvirtd if already running
and activate all the new daemons.
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Christophe de Dinechin <dinechin@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
When running in libvirtd, we are happy for any of the drivers to simply
skip their initialization in virStateInitialize, as other drivers are
still potentially useful.
When running in per-driver daemons though, we want the daemon to abort
startup if the driver cannot initialize itself, as the daemon will be
useless without it.
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
The make logic assumes that the SYSTEMD_UNIT_FILES var can be built from
SYSTEMD_UNIT_FILES_IN by simply dropping the directory prefix and the
.in suffix.
This won't work in future when a single .in unit file can be used to
generate multiple different units.
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Prepare for reusing libvirtd socket unit files with other daemons by
making various parts of their config conditionally defined by the make
rules.
Reviewed-by: Christophe de Dinechin <dinechin@redhat.com>
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
The make rules for the systemd socket unit files are all essentially
identical and can be collapsed into a single generic rule. The service
unit file rule can be simplified too.
Reviewed-by: Christophe de Dinechin <dinechin@redhat.com>
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Substitute in the @sysconfigdir@ value instead of /etc.
Reviewed-by: Christophe de Dinechin <dinechin@redhat.com>
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
The same make variables will be useful for building both libvirtd and
the split daemons, so refactor & rename variables to facilitate reuse.
Automake gets annoyed if you define a variable ending LDFLAGS:
src/remote/Makefile.inc.am:53: warning: variable 'REMOTE_DAEMON_LDFLAGS' is defined but no program or
src/remote/Makefile.inc.am:53: library has 'REMOTE_DAEMON' as canonical name (possible typo)
So we trick it by using an LD_FLAGS or LD_ADD suffix instead.
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
GNULIB sets $(LIBSOCKET) on mingw to pull in the windows socket
APIs. This is trivially not required, since we don't build libvirtd
on mingw.
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Prepare for reusing libvirtd augeas defintions with other daemons by
making the config parameters for IP sockets conditionally defined by
the make rules.
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Prepare for reusing libvirtd config to create other daemons by making
the config parameters for IP sockets conditionally defined by the make
rules.
The main libvirtd daemon will retain IP listen ability, but all the
driver specific daemons will be local UNIX sockets only. Apps needing
IP connectivity will connect via the libvirtd daemon which will proxy
to the driver specfic daemon.
Reviewed-by: Christophe de Dinechin <dinechin@redhat.com>
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Using @VARNAME@ is a normal style of automake, so lets match that.
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Prepare for reusing libvirtd source to create other daemons by making
the use of IP sockets conditionally defined by the make rules.
The main libvirtd daemon will retain IP listen ability, but all the
driver specific daemons will be local UNIX sockets only. Apps needing
IP connectivity will connect via the libvirtd daemon which will proxy
to the driver specfic daemon.
Reviewed-by: Christophe de Dinechin <dinechin@redhat.com>
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Prepare for reusing libvirtd source to create other daemons by making
the driver(s) to load conditionally defined by the make rules.
If nothing is set, all drivers will be loaded, ignoring any missing ones
as historically done.
If MODULE_NAME is set only one driver will be loaded and that one must
succeed.
Reviewed-by: Christophe de Dinechin <dinechin@redhat.com>
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Prepare for reusing libvirtd source to create other daemons by making
the daemon name conditionally defined by the make rules.
Reviewed-by: Christophe de Dinechin <dinechin@redhat.com>
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
The remote daemon tries to print out its help text in a couple of giant
blocks of text. This has already lead to duplication of the text for the
privileged vs unprivileged execution mode. With the introduction of more
daemons, this text is going to be duplicated many more times with small
variations. This is very unfriendly to translators as they have to
translate approximately the same text many times with small tweaks.
Splitting the text up into individual strings to print means that each
piece will only need translating once. It also gets rid of all the
layout information from the translated strings, so avoids the problem of
translators breaking formatting by mistake.
Reviewed-by: Christophe de Dinechin <dinechin@redhat.com>
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Instead of adding generated config files to CLEANFILES and BUILT_SOURCES
in each makefile, add them all at once.
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Instead of each subdir containing its own custom rule for checking the
augeas tests, use common rule for all.
The new rule searches both src + build dirs for include files, since
some augeas files will be auto-generated very shortly.
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
The current make rules are inconsistent about which directory the
augeas test files are created in. Put them all in the same dir as
their source.
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
We already have a variable that lists all augeas test files, so we can
add everything to CLEANFILES at once.
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
The augeas-gentest.pl program merges a config file into a augeas
file, saving the output to a new file. It is going to be useful
to further process the output file, and it would be easier if this can
be done with a pipeline, so change augeas-gentest.pl to write to stdout
instead of a file.
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Each public API is required to log all arguments it was called
with. Except, there are some missing. Fix them.
Signed-off-by: Han Han <hhan@redhat.com>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Redefining a domain via virDomainDefineXML should not give different results
based on an already existing definition.
Also, there's a crasher somewhere in the code:
https://bugzilla.redhat.com/show_bug.cgi?id=1739338
This reverts commit 94b3aa55f8
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Jiri Denemark <jdenemar@redhat.com>
Since its introduction in commit
8737578d11, the TPM version format is
"2.0" and not "2".
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Since qemuDomainDeviceDefPostParse callback requires qemuCaps, we need
to make sure it gets the capabilities stored in the domain's private
data if the domain is running. Passing NULL may cause QEMU capabilities
probing to be triggered in case QEMU binary changed in the meantime.
When this happens while a running domain object is locked, QMP event
delivered to the domain before QEMU capabilities probing finishes will
deadlock the event loop.
QEMU capabilities lookup (via domainPostParseDataAlloc callback) is
hidden inside virDomainDeviceDefPostParseOne with no way to pass
qemuCaps to virDomainDeviceDef* functions. This patch fixes all
remaining paths leading to virDomainDeviceDefPostParse.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Since qemuDomainDefPostParse callback requires qemuCaps, we need to make
sure it gets the capabilities stored in the domain's private data if the
domain is running. Passing NULL may cause QEMU capabilities probing to
be triggered in case QEMU binary changed in the meantime. When this
happens while a running domain object is locked, QMP event delivered to
the domain before QEMU capabilities probing finishes will deadlock the
event loop.
Several general snapshot and checkpoint APIs were lazily passing NULL as
the parseOpaque pointer instead of letting their callers pass the right
data. This patch fixes all paths leading to virDomainDefParseNode.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Since qemuDomainDefPostParse callback requires qemuCaps, we need to make
sure it gets the capabilities stored in the domain's private data if the
domain is running. Passing NULL may cause QEMU capabilities probing to
be triggered in case QEMU binary changed in the meantime. When this
happens while a running domain object is locked, QMP event delivered to
the domain before QEMU capabilities probing finishes will deadlock the
event loop.
This patch fixes all paths leading to virDomainDefPostParse.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Since qemuDomainDefPostParse callback requires qemuCaps, we need to make
sure it gets the capabilities stored in the domain's private data if the
domain is running. Passing NULL may cause QEMU capabilities probing to
be triggered in case QEMU binary changed in the meantime. When this
happens while a running domain object is locked, QMP event delivered to
the domain before QEMU capabilities probing finishes will deadlock the
event loop.
Several general functions from domain_conf.c were lazily passing NULL as
the parseOpaque pointer instead of letting their callers pass the right
data. This patch fixes all paths leading to virDomainDefCopy to do the
right thing.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Since qemuDomainDefPostParse callback requires qemuCaps, we need to make
sure it gets the capabilities stored in the domain's private data if the
domain is running. Passing NULL may cause QEMU capabilities probing to
be triggered in case QEMU binary changed in the meantime. When this
happens while a running domain object is locked, QMP event delivered to
the domain before QEMU capabilities probing finishes will deadlock the
event loop.
This patch fixes all paths leading to qemuMigrationCookieXMLParse.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Since qemuDomainDefPostParse callback requires qemuCaps, we need to make
sure it gets the capabilities stored in the domain's private data if the
domain is running. Passing NULL may cause QEMU capabilities probing to
be triggered in case QEMU binary changed in the meantime. When this
happens while a running domain object is locked, QMP event delivered to
the domain before QEMU capabilities probing finishes will deadlock the
event loop.
This patch fixes all paths leading to virDomainDefParseString.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Since qemuDomainDefPostParse callback requires qemuCaps, we need to make
sure it gets the capabilities stored in the domain's private data if the
domain is running. Passing NULL may cause QEMU capabilities probing to
be triggered in case QEMU binary changed in the meantime. When this
happens while a running domain object is locked, QMP event delivered to
the domain before QEMU capabilities probing finishes will deadlock the
event loop.
This patch fixes all paths leading to qemuMigrationAnyPrepareDef.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Since qemuDomainDefPostParse callback requires qemuCaps, we need to make
sure it gets the capabilities stored in the domain's private data if the
domain is running. Passing NULL may cause QEMU capabilities probing to
be triggered in case QEMU binary changed in the meantime. When this
happens while a running domain object is locked, QMP event delivered to
the domain before QEMU capabilities probing finishes will deadlock the
event loop.
This patch fixes all paths leading to qemuDomainSaveImageOpen.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Since qemuDomainDefPostParse callback requires qemuCaps, we need to make
sure it gets the capabilities stored in the domain's private data if the
domain is running. Passing NULL may cause QEMU capabilities probing to
be triggered in case QEMU binary changed in the meantime. When this
happens while a running domain object is locked, QMP event delivered to
the domain before QEMU capabilities probing finishes will deadlock the
event loop.
This patch fixes all paths leading to qemuDomainDefFormatBufInternal.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Since qemuDomainDefPostParse callback requires qemuCaps, we need to make
sure it gets the capabilities stored in the domain's private data if the
domain is running. Passing NULL may cause QEMU capabilities probing to
be triggered in case QEMU binary changed in the meantime. When this
happens while a running domain object is locked, QMP event delivered to
the domain before QEMU capabilities probing finishes will deadlock the
event loop.
This patch fixes all paths leading to qemuDomainDefCopy.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Use the correct enum constant when validating vlan usage.
This fixes a merge error in
commit 6cb0ec48bd
Author: Daniel P. Berrangé <berrange@redhat.com>
Date: Mon Sep 3 17:34:22 2018 +0100
network: convert networkAllocateActualDevice to virNetworkPortDef
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Requires adjustments to use verify_expr() which replaces
verify_true(), and to disable the new syntax check
'sc_prohibit_gnu_make_extensions' since we require GNU make.
Signed-off-by: Eric Blake <eblake@redhat.com>
Commit fed58d83 was a hack to fix a mingw build failure due to header
inclusion order resulting in a clash over the use of DATADIR,
repeating a trick made several other times in the past. Better is to
revert that, and instead use pragmas to avoid the clash in the first
place, regardless of header ordering, solving it for everyone.
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Now that the code does not refer to any libvirt headers,
except internal.h macros, it does not need to link to
any libvirt code, nor gnulib either. The only thing it
needs is yajl.
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Now that 100% of libvirt code is forbidden in a SUID environment,
we no longer need to worry about whether env variables are
trustworthy or not. The virt-login-shell setuid program, which
does not link to any libvirt code, will purge all environment
variables, except $TERM, before invoking the virt-login-shell-helper
program which uses libvirt.
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Now that 100% of libvirt code is forbidden in a SUID environment,
we no longer need to worry about whether env variables are
trustworthy or not. The virt-login-shell setuid program, which
does not link to any libvirt code, will purge all environment
variables, except $TERM, before invoking the virt-login-shell-helper
program which uses libvirt.
Thus we only need one API for env passthrough in virCommand.
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Now that none of the libvirt.so code will ever run in a setuid
context, we can remove the virIsSUID() method. The global
initializer function can just inline the check itself. The new
inlined check is slightly stronger as it also looks for a
setgid situation.
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
The virt-login-shell setuid program is now a tiny piece of code
that only uses standard libc functions, and santizes the execution
environment before invoking the real virt-login-shell-helper.
The latter is thus able to use the normal libvirt.so build,
allowing us to delete the special cut down setuid library build.
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
If virQEMUDriverGetCapabilities returns NULL, then a subsequent
deref of @caps would cause an error, so we just return failure.
Found by Coverity
Signed-off-by: John Ferlan <jferlan@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
The previous bump to 4.4 was done in:
commit 24241c236e
Author: Daniel P. Berrange <berrange@redhat.com>
Date: Wed Jul 5 10:35:32 2017 +0100
Require use of GCC 4.4 or CLang compilers
with 4.4 picked due to RHEL-6. Since we dropped RHEL-6, the
next oldest distro is RHEL-7 (4.8.5), and thus we pick 4.8
as the new min.
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Until now, testDomainGetTime would always return the same fixed values
everytime it was called. By using domain-private data we can make this
API return the values previously set with testDomainSetTime, or use the
same old fixed values in case testDomainSetTime hasn't been called at all.
Signed-off-by: Ilias Stamatis <stamatis.iliass@gmail.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
The qemu and vz implementations don't emit any signals when this API is
called, so we can do the same here for now and succeed by doing nothing.
Signed-off-by: Ilias Stamatis <stamatis.iliass@gmail.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
The qemu driver already does some <rng> model validation, based on
qemuCaps. However, the logic for exposing <rng> model values in domcaps
is basically identical. This drops the qemuCaps checking and compares
against the domCaps data directly.
This approach makes it basically impossible to add a new <rng> model to
the qemu driver without extending domcaps. The validation can also
be shared with other drivers eventually.
Reviewed-by: Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
Fill in virDomainCaps at Validate time and use it to call
virDomainCapsDeviceDefValidate
Reviewed-by: Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
This is an entrypoint to validate a virDomainDeviceDef against
values filled into virDomainCaps.
Currently it's just a stub
Reviewed-by: Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
qemuCaps is tied to a binary on disk. domCaps is tied to a combo
of binary+machine+arch+virttype values. For the qemu driver this almost
entirely translates to a permutation of qemuCaps though
Upcoming patches want to use the domCaps data store at XML validate
time, but we need to cache the data so we aren't repeatedly
regenerating it.
Add a domCapsCache hash table to qemuCaps. This ensures that the domCaps
cache is blown away whenever qemuCaps needs to be regenerated. Similarly
when qemuCaps is invalidated, the next call to virQEMUCapsCacheLookup
will unref qemuCaps and free our cache as well.
Adjust virQEMUDriverGetDomainCapabilities to search the cache and add
to it if we don't find a hit.
Signed-off-by: Cole Robinson <crobinso@redhat.com>
Reviewed-by: Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
For now it's just a helper for building a qemu virDomainCapsPtr,
used in qemuConnectGetDomainCapabilities
Reviewed-by: Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
The model logic is taken from qemuDomainRNGDefValidate
Reviewed-by: Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
This way it is obvious when adding a new resource control type
that stats helper func needs to be updated too.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
If the host doesn't have resctrl then the monitor is going to be
NULL and we must avoid dereferencing it.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The capabilities object must be unrefed when no longer needed.
Use VIR_AUTOUNREF() for that.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Current code doesn't allow us to add sub-features as we always print the
closing '/>'. As a preparatory change to implementing 'direct' sub-feature
for 'stimer' feature switch to printing closing tag individually.
No functional change.
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Some Hyper-V features (like the upcoming Direct Synthetic timers) are
announced by feature bits in Edx but KVM_FEATURE_DEF() supports only Eax.
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Ján Tomko <jtomko@redhat.com>
I find this function more readable if checks for passed storage
source are done first and backing chain is done last. Mixing them
together does not hurt, but is less readable.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
ACKed-by: Peter Krempa <pkrempa@redhat.com>
This function does not change any of the passed addresses. It
just reads them.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
ACKed-by: Peter Krempa <pkrempa@redhat.com>
This function does not change any of the passed addresses. It
just reads them.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
ACKed-by: Peter Krempa <pkrempa@redhat.com>
On success update the domain-private data. Consider / and /boot to be
the only mountpoints avaiable in order to be consistent with the other
FS-related calls.
Signed-off-by: Ilias Stamatis <stamatis.iliass@gmail.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
vm-specific data can be used by APIs that need to preserve some state
between calls
Some of them are:
- FS-related APIs for remembering which mountpoints are frozen
- virDomainSetTime / virDomainGetTime for maintaining time information
- virDomainSetIOThreadParams for storing the I/O thread parameters
- virDomainManagedSaveDefineXML for internally storing the VM definition
Signed-off-by: Ilias Stamatis <stamatis.iliass@gmail.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
The main value here is the current balloon value which taken from the
config. All the other values (except for period) are derived by 2^n
division so that compiler prefers bitwise operations. Period value was
kept fixed in order to produce predictable results in a test environment.
Signed-off-by: Ilias Stamatis <stamatis.iliass@gmail.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
This should just forward the call to testDomainCreateXML since we
can't do anything with the provided file descriptors in the test driver.
Signed-off-by: Ilias Stamatis <stamatis.iliass@gmail.com>
This should just forward the call to testDomainCreateWithFlags since we
can't do anything with the provided file descriptors in the test driver.
Signed-off-by: Ilias Stamatis <stamatis.iliass@gmail.com>
The xencommons service provides all the essential services such as
xenstored, xenconsoled, etc. needed by the libvirt Xen driver, so
libvirtd should be started after xencommons.
The xendomains service uses Xen's xl tool to operate on any domains it
finds running, even those managed by libvirt. Add a conflicts on the
xendomains service to ensure it is not enabled when libvirtd is enabled.
Signed-off-by: Jim Fehlig <jfehlig@suse.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
This code that executes virPCIDeviceReattach in all
virPCIDevicePtr objects of a given virPCIDeviceListPtr
list is replicated twice in the code. Putting it in a helper
function helps with readability.
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
virHostdevReattachPCIDevice() is a static that simply does
a wait loop with virPCIDeviceWaitForCleanup() before
calling virPCIDeviceReattach().
This loop traces back to commit d1e5676c0d, aiming to
solve a race condition between Libvirt returning the
device back to the host and QEMU trying to access it in
the meantime, which resulted in QEMU exiting on error
and killing the guest. This happens because device_del
is asynchronous, returning OK even if the guest didn't
release the device. Commit 01abc8a1b8 moved this code
to qemu_hostdev.c, 82e8dd4cf8 added the pci-stub conditional
for the loop, 899b261127 moved the code to virhostdev.c
where it stood until now.
The intent of this wait loop is still valid: device_del
is still not bullet proof into preventing the conditions
that commit d1e5676c0d aimed to fix, especially when considering
all the architectures we must support. However, this loop
is executed only in virHostdevReattachPCIDevice(), leaving
every other virPCIDeviceReattach() call prone to that error.
Let's move the wait loop code to virPCIDeviceReattach(). This
will:
- make every reattach call safe from this race condition
with the pci-stub;
- allow for a bit of code cleanup (virHostdevReattachPCIDevice()
can be erased, and virHostdevReAttachPCIDevices() can use
virPCIDeviceReattach() directly);
- make it easier to understand the overall reattach mechanisms in
Libvirt, without the risk of a newcomer wondering why reattach
is done slightly different in some instances.
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
This code that executes virPCIDeviceReset in all virPCIDevicePtr
objects of a given virPCIDeviceListPtr list is replicated twice
in the code. Putting it in a helper function helps with
readability.
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
There is no restriction on maximum value of PCI domain. In fact,
Linux kernel uses plain atomic inc when assigning PCI domains:
drivers/pci/pci.c:static int pci_get_new_domain_nr(void)
drivers/pci/pci.c-{
drivers/pci/pci.c- return atomic_inc_return(&__domain_nr);
drivers/pci/pci.c-}
Of course, this function is called only if kernel was compiled
without PCI domain support or ACPI did not provide PCI domain.
However, QEMU still has the same restriction as us: in
set_pci_host_devaddr() QEMU checks if domain isn't greater than
0xffff. But one can argue that that's a QEMU limitation. We still
want to be able to cope with other hypervisors that don't have
this limitation (possibly).
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Currently, the way we format PCI address is using printf-s
precision, e.g. "%.4x". This works if we don't want to print any
value outside of bounds (which is usually the case). However,
turns out, PCI domain can be 0x10000 which doesn't work well with
our format strings. However, if we change the format string to
"%04x" then we still pad small values with zeroes but also we are
able to print values that are larger than four digits. In fact,
this format string used by kernel to print a PCI address:
"%04x:%02x:%02x.%d"
The other three format strings (for bus, device and function) are
changed too, so that we use the same format string as kernel.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The format string for a PCI address is copied over and over
again, often with slight adjustments. Introduce global
VIR_PCI_DEVICE_ADDRESS_FMT macro that holds the formatting string
and use it wherever possible.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
In near future, the length restriction of PCI domain is going to
be lifted. This means that our assumption that PCI address is 13
bytes long is no longer true. We can avoid this problem by making
@name dynamically allocated and thus not bother with actual
length of stringified PCI address.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
This function declares @ret variable and then uses
VIR_STEAL_PTR() to avoid freeing temporary variable @dev which is
constructed. Well, as of 267f1e6da5 we have VIR_RETURN_PTR()
macro so that we can avoid this pattern.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
While it's true that older QEMUs were not able to deal with PCI
domains, we don't support those versions anymore (see
4a42ece13a). Therefore it is safe to always format fully
expanded PCI address. Format PCI domain always as it will
simplify next commits.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
A new algorithm for detecting the vcpus and monitor type conflicts
between new monitor an existing allocation and monitor groups.
After refactoring, since we are verifying both @vcpus and monitor
type @tag at the same time, the validating function name has been
renamed from virDomainResctrlMonValidateVcpus to
virDomainResctrlValidateMonitor.
Signed-off-by: Wang Huaqiang <huaqiang.wang@intel.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Export virResctrlMonitorGetStats and make
virResctrlMonitorGetCacheOccupancy obsoleted.
Signed-off-by: Wang Huaqiang <huaqiang.wang@intel.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Refactor 'virResctrlMonitorStats' to track multiple statistical
records.
Signed-off-by: Wang Huaqiang <huaqiang.wang@intel.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Refactor and rename 'virResctrlMonitorFreeStats' to
'virResctrlMonitorStatsFree' to free one
'virResctrlMonitorStatsPtr' object.
Signed-off-by: Wang Huaqiang <huaqiang.wang@intel.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
'virResctrlAllocIsEmpty' checks if cache allocation or memory
bandwidth allocation settings are specified in configuration
file. It is not proper to be used in checking memory bandwidth
allocation is specified in XML settings because this function
could not distinguish memory bandwidth allocations from cache
allocations.
Here using the local variable @n, which indicates the cache
allocation groups or memory bandwidth groups depending on the
context it is in, to decide if append a new @resctrl object.
If @n is zero and no monitors groups specified in XML, then
we should not append a new @resctrl object to @def->resctrls.
This kind of replacement is also more efficient and avoiding
a long function calling path.
Signed-off-by: Wang Huaqiang <huaqiang.wang@intel.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Let 'virDomainResctrlVcpuMatch' to retrieve a pointer of
virDomainResctrlDefPtr in its third parameter instead
of virResctrlAllocPtr, if @vcpus is matched with the vcpus
of some resctrl allocation in list of @def->resctrls.
Signed-off-by: Wang Huaqiang <huaqiang.wang@intel.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Creating object and judging if it is successfully created in fewer
lines.
Signed-off-by: Wang Huaqiang <huaqiang.wang@intel.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
