Commit Graph

4139 Commits

Author SHA1 Message Date
Daniel P. Berrangé
2879315d39 util: move code for getting listen FDs into systemd module
The virGetListenFDs method no longer needs to be called directly, so it
can be a static function internal to the systemd code.

Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
2019-07-12 16:55:40 +01:00
Daniel P. Berrangé
2dfacbffea util: remove code spawning with systemd activation env vars
The only use of this code was removed by:

  commit be78814ae0
  Author: Michal Privoznik <mprivozn@redhat.com>
  Date:   Thu Apr 2 14:41:17 2015 +0200

    virNetSocketNewConnectUNIX: Use flocks when spawning a daemon

less than a year after it was first introduced in

  commit 1b807f92db
  Author: Martin Kletzander <mkletzan@redhat.com>
  Date:   Wed Jul 16 08:00:19 2014 +0200

    rpc: pass listen FD to the daemon being started

Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
2019-07-12 16:55:40 +01:00
Daniel P. Berrangé
5b8569dd6e util: add APIs for facilitating use of systemd activation FDs
When receiving multiple FDs from systemd during service activation it is
neccessary to identify which purpose each FD is used for. While this
could be inferred by looking for the specific IP ports or UNIX socket
paths, this requires the systemd config to always match what is expected
by the code. Using systemd FD names we can remove this restriction and
simply identify FDs based on an arbitrary name.

The FD names are passed by systemd in the LISTEN_FDNAMES env variable
which is populated with the socket unit file names, unless overriden
by using the FileDescriptorName setting.

This is supported since the system 227 release and unfortunately RHEL7
lacks this version. Thus the code has some back compat support whereby
we look at the TCP ports or the UNIX socket paths to identify what
socket maps to which name. This back compat code is written such that
is it easly deleted when we are able to mandate newer systemd.

Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
2019-07-12 16:55:39 +01:00
Daniel P. Berrangé
012e0d40bf util: add API for resolving socket service names
The getservent() APIs are not re-entrant safe so cannot be used in any
threaded program. Add a wrapper around getaddrinfo() for resolving the
service names to a port number.

Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
2019-07-11 14:13:03 +01:00
Daniel P. Berrangé
a767af1a7c util: add helper API for getting UNIX path from socket address
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
2019-07-11 14:13:03 +01:00
Daniel P. Berrangé
2a5bc13639 util: assume modern CPU_ALLOC macros always exist
Support for the modern CPU_ALLOC macros was added 10 years ago in

  commit a73cd93b24
  Author: Daniel P. Berrange <berrange@redhat.com>
  Date:   Mon Nov 16 16:08:29 2009 +0000

    Alternate CPU affinity impl to cope with NR_CPUS > 1024

This is long enough that we can assume it always exists and drop the
back compat code.

Reviewed-by: Martin Kletzander <mkletzan@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
2019-07-09 18:44:19 +01:00
Peter Krempa
c7a8ccc040 util: Drop virsexpr module
There are no users any more.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2019-07-09 10:27:20 +02:00
Michal Privoznik
1596199067 virFileRemoveXAttr: Report error on failure
It's better to have the function report errors, because none of
the callers does.

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Cole Robinson <crobinso@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
2019-07-03 08:36:03 +02:00
Michal Privoznik
9b130c33f9 virFileSetXAttr: Report error on failure
It's better to have the function report errors, because none of
the callers does.

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Cole Robinson <crobinso@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
2019-07-03 08:36:03 +02:00
Michal Privoznik
0d44d2876a virfile: Make virFileGetXAttr report errors
The way that security drivers use XATTR is kind of verbose. If
error reporting was left for caller then the caller would end up
even more verbose.

There are two places where we do not want to report error if
virFileGetXAttr fails. Therefore virFileGetXAttrQuiet is
introduced as an alternative that doesn't report errors.

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Cole Robinson <crobinso@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
2019-07-03 08:36:03 +02:00
Michal Privoznik
0a9dcfabf8 qemusecuritymock: Mock virProcessRunInFork
This test is beautiful. It checks if we haven't messed up
refcounting on security labels (well, XATTRs where the original
owner is stored). It does this by setting up tracking of XATTR
setting/removing into a hash table, then calling
qemuSecuritySetAllLabel() followed by immediate
qemuSecurityRestoreAllLabel() at which point, the hash table must
be empty. The test so beautifully written that no matter
what you do it won't fail. The reason is that all seclabel work
is done in a child process. Therefore, the hash table in the
parent is never changed and thus always empty.

There are two reasons for forking (only one of them makes sense
here though):

1) namespaces - when chown()-ing a file we have to fork() and
make the child enter desired namespace,
2) locking - because of exclusive access to XATTRs we lock the
files we chown() and this is done in a fork (see 207860927a for
more info).

While we want to fork in real world, we don't want that in a test
suite. Override virProcessRunInFork() then.

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
2019-07-03 08:36:03 +02:00
Pavel Hrdina
62dd4d25a2 util: vircgroupv2: stop enabling missing controllers with systemd
Because of a systemd delegation policy [1] we should not write to any
cgroups files owned by systemd which in case of cgroups v2 includes
'cgroups.subtree_control'.

systemd will enable controllers automatically for us to have them
available for VM cgroups.

[1] <https://github.com/systemd/systemd/blob/master/docs/CGROUP_DELEGATION.md>

Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2019-06-28 15:17:37 +02:00
Pavel Hrdina
d117431143 Revert "util: vircgroup: pass parent cgroup into virCgroupDetectControllersCB"
This reverts commit 7bca1c9bdc.

As it turns out it's not a good idea on systemd hosts.  The root
cgroup can have all controllers enabled but they don't have to be
enabled for sub-cgroups.

Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2019-06-28 15:17:26 +02:00
Daniel P. Berrangé
bd17012f0c Revert "error: Add VIR_ERR_DEPRECATED error code"
This reverts commit 226094fbc4.

A deprecation is a warning to something that use of a feature is
being discouraged. By definition it is not an error condition to
continue to use a deprecated feature.

A VIR_ERR_DEPRECATED constant thus makes no conceptual sense. For
features which are entirely absent we already document that the
VIR_ERR_NO_SUPPORT code will be used. There is no need to distinguish
between a feature which never existed and a feature which previously
existed and was since removed.

Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
2019-06-27 14:47:10 +01:00
Pavel Hrdina
05807e5d42 util: vircgroupv2: mark only requested controllers as available
When detecting available controllers on host we can be limited by list
of controllers from qemu.conf file.

Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
2019-06-26 13:34:01 +02:00
Pavel Hrdina
1d49cdcd11 util: vircgroupv2: don't error out if enabling controller fails
Currently CPU controller cannot be enabled if there is any real-time
task running and is assigned to non-root cgroup which is the case on
several distributions with graphical environment.

Instead of erroring out treat it as the controller is not available.

Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
2019-06-26 13:34:01 +02:00
Pavel Hrdina
29a94a3fef util: vircgroupv2: separate return values of virCgroupV2EnableController
In order to skip controllers that we are not able to activate we need
to return different return value so the caller can decide what to do.

Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
2019-06-26 13:34:01 +02:00
Pavel Hrdina
f9d1c08557 util: vircgroupv2: enable CPU controller only if it's available
It might happen that we are not able to enable CPU controller so we
can enable it for thread sub-cgroups only if it's available in parent
cgroup.

Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2019-06-26 13:34:01 +02:00
Pavel Hrdina
535bdf83c0 util: vircgroupv2: use any controller to create thread directory
The assumption that CPU controller would be always enabled is wrong, we
should use any available controller to create a new sub-cgroup.

Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2019-06-26 13:34:01 +02:00
Pavel Hrdina
d3007c844d util: vircgroup: improve controller detection
This affects only cgroups v2 where enabled controllers are not based on
available mount points but on the list provided in cgroup.controllers
file.  However, moving it will fill in placement as well, so it needs
to be freed together with mount point if we don't need that controller.

Before this patch we were assuming that all controllers available in
root cgroup where available in all other sub-cgroups which was wrong.

In order to fix it we need to move the cgroup controllers detection
after cgroup placement was prepared in order to build correct path for
cgroup.controllers file.

Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
2019-06-26 13:34:01 +02:00
Pavel Hrdina
7bca1c9bdc util: vircgroup: pass parent cgroup into virCgroupDetectControllersCB
In cgroups v2 we don't have to detect available controllers every single
time if we are creating a new cgroup based on parent cgroup.

Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2019-06-26 13:34:01 +02:00
Peter Krempa
6dd609114d util: storage: Fix virStorageSourceGetActualType if volume was not translated
virStorageSourceGetActualType would return VIR_STORAGE_TYPE_NONE in case
when a virStorageSource of (top level) type VIR_STORAGE_TYPE_VOLUME was
not prepared to use by the vm by calling
virDomainDiskTranslateSourcePool.

Fix this issue by returning VIR_STORAGE_TYPE_VOLUME in case when the
volume was not translated yet.

Additionally also add documentation for the function describing the
quirk.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2019-06-26 12:28:31 +02:00
Peter Krempa
226094fbc4 error: Add VIR_ERR_DEPRECATED error code
Allow a simple programatic check that a given feature is no longer
supported by introducing a separate error code for this scenario.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2019-06-26 08:37:01 +02:00
Daniel Henrique Barboza
0a5a547725 virpci: report dev->name in virPCIGetHeaderType error message
Trivial change. Adding the name of the device that has an
unknown PCI header type in that function helps when debugging
PCI code.

Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
2019-06-24 18:06:59 +02:00
Michal Privoznik
c779da87ef virStorageSourceChainHasManagedPR: Check propely
In the virStorageSourceChainHasManagedPR() function we iterate
over whole backing chain trying to determine if one of the layers
has managed PR configured. But due to a typo we in fact check the
top layer only.

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
2019-06-21 18:04:11 +02:00
Pavel Hrdina
7e8a1a6e21 util: vircgroupv2: add support for BFQ files
In kernel 4.12 there was introduced new BFQ scheduler and in kernel
5.0 the old CFQ scheduler was removed.  This has an implication on
the cgroups file names.

If the CFQ controller is enabled we use one file:

    io.weight

The new BFQ controller expose one file with different name:

    io.bfq.weight

Except for different name they have different syntax.

io.weight:

    default $val
    major:minor $val

io.bfq.weight:

    $val

The difference is that BFQ doesn't support per-device weight.

Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2019-06-21 14:36:02 +02:00
Pavel Hrdina
035ebe9390 util: vircgroupv1: add support for BFQ blkio files
In kernel 4.12 there was introduced new BFQ scheduler and in kernel
5.0 the old CFQ scheduler was removed.  This has an implication on
the cgroups file names.

If the CFQ controller is enabled we use these two files:

    blkio.weight
    blkio.weight_device

The new BFQ controller expose only one file with different name:

    blkio.bfq.weight

The reason is that BFQ controller doesn't support per-device weight.

Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2019-06-21 14:35:59 +02:00
Pavel Hrdina
c23829f18a util: vircgroup: move virCgroupGetValueStr out of virCgroupGetValueForBlkDev
If we need to get a path of specific file and we need to check its
existence before we use it then we can reuse that path to get value
for specific device.  This way we will not build the path again in
virCgroupGetValueForBlkDev.

Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2019-06-21 14:35:57 +02:00
Pavel Hrdina
3f741f9ace util: vircgroup: introduce virCgroup(Get|Set)ValueRaw
If we need to get a path of specific file and we need to check its
existence before we use it then we can reuse that path to get/set
values instead of calling the existing get/set value functions which
would be building the path again.

Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2019-06-21 14:35:51 +02:00
Peter Krempa
5fa5cc37fe util: error: Add API for prefixing last set error with a string
In some cases we report a low level error message which does not have
enough information to see what the problem is. To allow improving on
this add an API which will prefix the error message with another error
message string which can be used to describe where the error comes from.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
ACKed-by: Michal Privoznik <mprivozn@redhat.com>
2019-06-20 17:10:24 +02:00
Michal Privoznik
27f866ba8a virhostdev: Use VIR_AUTOPTR more
There are couple of functions which get shorter after the
treatment.

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2019-06-20 10:29:54 +02:00
Michal Privoznik
df07ccc6e1 virHostdevPrepareSCSIVHostDevices: Simplify logic
Couple of things happening in this patch:

1) We can mark the device we're adding onto active list as used
   way before - when adding it onto temporary list.

2) When actually moving device from a temporary helper list onto
   the list of active devices we check if the device isn't
   already there. The same check is performed by
   virSCSIVHostDeviceListAdd() later. Drop this duplicity.

3) The 'error' label is renamed to 'rollback' to reflect what it
   is actually doing. While in the rest of the code we don't
   allow random label names, this source file is different.

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2019-06-20 10:29:54 +02:00
Michal Privoznik
35d61939bc virHostdevFindUSBDevice: Simplify flow a bit
When looking up a USB device by vendor the
virUSBDeviceFindByVendor() is used. The function returns number
of items found. But the logic in caller to process it is
needlessly complicated.

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2019-06-20 10:29:54 +02:00
Michal Privoznik
f08e6883cb virhostdev: Use VIR_AUTOUNREF more
There are couple of functions which get shorter after the
treatment.

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2019-06-20 10:29:54 +02:00
Michal Privoznik
b2985cfe33 virHostdevReAttachPCIDevices: Construct pcidevs list earlier
There's no need to translate virDomainHostdevDef-s into
virPCIDevice-s with locked list of PCI devices.

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2019-06-20 10:29:54 +02:00
Michal Privoznik
bf450f5b3d virHostdevPreparePCIDevices: Construct pcidevs list earlier
There's no need to translate virDomainHostdevDef-s into
virPCIDevice-s with locked list of PCI devices.

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2019-06-20 10:29:54 +02:00
Michal Privoznik
11fa712c26 virHostdevGetPCIHostDeviceList: Use VIR_AUTOPTR for virPCIDevice
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2019-06-20 10:29:54 +02:00
Michal Privoznik
7cf2963017 virHostdevGetPCIHostDeviceList: Add @pci a bit later
This function is a good candidate for VIR_AUTOPTR() conversion.
But this conversion will be easier if we only add @pci device
onto @pcidevs list after it was all set up.

This is no functional change.

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2019-06-20 10:29:54 +02:00
Jonathon Jongsma
2ad45811e2 util: misc: use #pragma once in headers
Signed-off-by: Jonathon Jongsma <jjongsma@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Ján Tomko <jtomko@redhat.com>
2019-06-19 17:12:33 +02:00
Jonathon Jongsma
336d682d14 util: scsi: use #pragma once in headers
Signed-off-by: Jonathon Jongsma <jjongsma@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Ján Tomko <jtomko@redhat.com>
2019-06-19 17:12:33 +02:00
Jonathon Jongsma
c64a8d98f6 util: xml: use #pragma once in headers
Signed-off-by: Jonathon Jongsma <jjongsma@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Ján Tomko <jtomko@redhat.com>
2019-06-19 17:12:33 +02:00
Jonathon Jongsma
507b5707bc util: netlink: use #pragma once in headers
Signed-off-by: Jonathon Jongsma <jjongsma@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Ján Tomko <jtomko@redhat.com>
2019-06-19 17:12:33 +02:00
Jonathon Jongsma
55c0ec283b util: sysinfo: use #pragma once in headers
Signed-off-by: Jonathon Jongsma <jjongsma@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Ján Tomko <jtomko@redhat.com>
2019-06-19 17:12:33 +02:00
Jonathon Jongsma
52e596cae7 util: socketaddr: use #pragma once in headers
Signed-off-by: Jonathon Jongsma <jjongsma@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Ján Tomko <jtomko@redhat.com>
2019-06-19 17:12:33 +02:00
Jonathon Jongsma
a6d386eb87 util: string: use #pragma once in headers
Signed-off-by: Jonathon Jongsma <jjongsma@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Ján Tomko <jtomko@redhat.com>
2019-06-19 17:12:32 +02:00
Jonathon Jongsma
1141bfd259 util: object: use #pragma once in headers
Signed-off-by: Jonathon Jongsma <jjongsma@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Ján Tomko <jtomko@redhat.com>
2019-06-19 17:12:32 +02:00
Jonathon Jongsma
ca92f950b1 util: mac: use #pragma once in headers
Signed-off-by: Jonathon Jongsma <jjongsma@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Ján Tomko <jtomko@redhat.com>
2019-06-19 17:12:32 +02:00
Jonathon Jongsma
00eadc38dc util: hash: use #pragma once in headers
Signed-off-by: Jonathon Jongsma <jjongsma@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Ján Tomko <jtomko@redhat.com>
2019-06-19 17:12:32 +02:00
Jonathon Jongsma
bd4ed5bd99 util: command: use #pragma once in headers
Signed-off-by: Jonathon Jongsma <jjongsma@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Ján Tomko <jtomko@redhat.com>
2019-06-19 17:12:32 +02:00
Jonathon Jongsma
c664bbff2a util: dbus: use #pragma once in headers
Signed-off-by: Jonathon Jongsma <jjongsma@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Ján Tomko <jtomko@redhat.com>
2019-06-19 17:12:32 +02:00
Jonathon Jongsma
e7bacd3db9 util: virprobe.h: use #pragma once in headers
Signed-off-by: Jonathon Jongsma <jjongsma@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Ján Tomko <jtomko@redhat.com>
2019-06-19 17:12:32 +02:00
Jonathon Jongsma
5f7b3e0f24 util: error: use #pragma once in headers
Signed-off-by: Jonathon Jongsma <jjongsma@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Ján Tomko <jtomko@redhat.com>
2019-06-19 17:12:32 +02:00
Jonathon Jongsma
9f34408270 util: cgroup: use #pragma once in headers
Signed-off-by: Jonathon Jongsma <jjongsma@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Ján Tomko <jtomko@redhat.com>
2019-06-19 17:12:32 +02:00
Jonathon Jongsma
65d6a1df03 util: log: use #pragma once in headers
Signed-off-by: Jonathon Jongsma <jjongsma@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Ján Tomko <jtomko@redhat.com>
2019-06-19 17:12:32 +02:00
Jonathon Jongsma
2edd1c1d86 util: host: use #pragma once in headers
Signed-off-by: Jonathon Jongsma <jjongsma@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Ján Tomko <jtomko@redhat.com>
2019-06-19 17:12:32 +02:00
Jonathon Jongsma
4b72307b2f util: firewall: use #pragma once in headers
Signed-off-by: Jonathon Jongsma <jjongsma@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Ján Tomko <jtomko@redhat.com>
2019-06-19 17:12:32 +02:00
Jonathon Jongsma
7c6950a879 util: file: use #pragma once in headers
Signed-off-by: Jonathon Jongsma <jjongsma@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Ján Tomko <jtomko@redhat.com>
2019-06-19 17:12:31 +02:00
Jonathon Jongsma
1a5a5b3d3a util: arch.h: use #pragma once in headers
Signed-off-by: Jonathon Jongsma <jjongsma@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Ján Tomko <jtomko@redhat.com>
2019-06-19 17:12:31 +02:00
Jonathon Jongsma
7987eeaf9c util: netdev: use #pragma once in headers
Signed-off-by: Jonathon Jongsma <jjongsma@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Ján Tomko <jtomko@redhat.com>
2019-06-19 17:12:31 +02:00
Jonathon Jongsma
0b8b8da7d9 util: storage: use #pragma once in headers
Signed-off-by: Jonathon Jongsma <jjongsma@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Ján Tomko <jtomko@redhat.com>
2019-06-19 17:12:31 +02:00
Jonathon Jongsma
54416b6a59 util: atomic: use #pragma once
Signed-off-by: Jonathon Jongsma <jjongsma@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Ján Tomko <jtomko@redhat.com>
2019-06-19 17:12:31 +02:00
Jonathon Jongsma
a6d438a9a3 util: alloc: use #pragma once
Signed-off-by: Jonathon Jongsma <jjongsma@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Ján Tomko <jtomko@redhat.com>
2019-06-19 17:12:31 +02:00
Jonathon Jongsma
064c15fbf1 util: thread: use #pragma once in headers
Signed-off-by: Jonathon Jongsma <jjongsma@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Ján Tomko <jtomko@redhat.com>
2019-06-19 17:12:31 +02:00
Daniel P. Berrangé
c08fc8d199 network: add public APIs for network port object
Introduce a new virNetworPort object that will present an attachment to
a virtual network from a VM.

Reviewed-by: Laine Stump <laine@laine.org>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
2019-06-17 15:19:54 +01:00
Daniel P. Berrangé
6394cf9768 network: convert hook script to take a network port XML
When (un)plugging an interface into a network, the 'plugged'
and 'unplugged' operations are invoked in the hook script.

The data provided to the script contains the network XML, the
domain XML and the domain interface XML. When we strictly split the
drivers up this will no longer be possible and thus breakage is
unavoidable. The hook scripts are not considered to be covered by the
API guarantee so this is OK.

To avoid existing scripts taking the wrong action, the existing
operations are changed to 'port-created' and 'port-deleted'
instead. These will receive the network XML and the network port
XML.

Reviewed-by: Laine Stump <laine@laine.org>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
2019-06-17 15:19:54 +01:00
Daniel P. Berrangé
0c1e035085 nodesuspend: report unsupported if systemd & pm-utils aren't available
When libvirtd is run inside a container it is normal that neither
systemd nor pm-utils will be available. In this case there is no way to
suspend the host, so libvirt should just report the feature unsupported
instead of raising an error.

Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
2019-06-17 15:02:24 +01:00
Andrea Bolognani
b34fb1fb6f util: Propagate numad failures correctly
Right now, if numad fails, we raise an error but return an
empty string to the caller instead of a NULL pointer, which
means processing will continue and the user will see

  # virsh start guest
  error: Failed to start domain guest
  error: invalid argument: Failed to parse bitmap ''

instead of a more reasonable

  # virsh start guest
  error: Failed to start domain guest
  error: operation failed: Failed to query numad for the advisory nodeset

Make sure the user gets a better error message.

https://bugzilla.redhat.com/show_bug.cgi?id=1716387

Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2019-06-04 10:13:07 +02:00
Andrea Bolognani
2d2b26f96f util: Introduce virNumaNodesetToCPUset()
This helper converts a set of NUMA node to the set of CPUs
they contain.

Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2019-06-04 09:29:35 +02:00
Andrea Bolognani
1b2ac8010c util: Introduce virBitmapUnion()
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2019-06-04 09:29:35 +02:00
Jiri Denemark
f0f6faba63 util: Add virHostCPUGetTscInfo
On a KVM x86_64 host which supports invariant TSC this function can be
used to detect the TSC frequency and the availability of TSC scaling.

The magic MSR numbers required to check if VMX scaling is supported on
the host are documented in Volume 3 of the Intel® 64 and IA-32
Architectures Software Developer’s Manual.

Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
2019-06-03 18:07:16 +02:00
Michal Privoznik
ec6ce6363a virSysinfoReadARM: Try reading DMI table
https://bugzilla.redhat.com/show_bug.cgi?id=1426162

Turns out, some aarch64 systems have SMBIOS info. That means we
can use dmidecode to fetch some information. If that fails, fall
back to the old behaviour.

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
2019-06-03 17:59:38 +02:00
Michal Privoznik
ac61c9cfc3 virsysinfo: Rename virSysinfoReadX86 to virSysinfoReadDMI
There's nothing x86 specific about this function. Rename the
function so that it has DMI suffix which enables it to be reused
on different arches (as using X86 from say ARM would look
suspicious).

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
2019-06-03 17:51:12 +02:00
Michal Privoznik
ce0037442f misc: Drop useless checks from *Dispose() functions
Due to the way that our virObjectUnref() is written it's not
possible that a NULL is passed into *Dispose() function. However,
some functions check for that regardless.

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
2019-05-23 13:59:06 +02:00
Michal Privoznik
5cdd5d380b lib: Avoid double close when passing FDs with virCommandPassFD()
If an FD is passed into a child using:

  virCommandPassFD(cmd, fd, VIR_COMMAND_PASS_FD_CLOSE_PARENT);

then the parent should refrain from touching @fd thereafter. This
is even documented in virCommandPassFD() comment. The reason is
that either at virCommandRun()/virCommandRunAsync() or
virCommandFree() time the @fd will be closed. Closing it earlier,
e.g. right after virCommandPassFD() call might result in
undesired results. Another thread might open a file and receive
the same FD which is then unexpectedly closed by virCommandFree()
or virCommandRun().

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2019-05-17 16:01:11 +02:00
Michal Privoznik
523b799d3c m4: Provide default value fore UDEVADM
https://bugzilla.redhat.com/show_bug.cgi?id=1710575

It may happen that the system where libvirt is built at doesn't
have udevadm binary but the one where it runs does have it.
If we change how udevadm is run in virWaitForDevices() then we
can safely pass a default value in m4 macro.

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2019-05-17 15:08:59 +02:00
Michal Privoznik
2944dcb2de lib: Drop UDEVSETTLE
The udevsettle binary is no longer used anywhere as it was
replaced by 'udevadm settle'. There's no reason for us to even
check for it in configure.

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2019-05-17 15:08:59 +02:00
Michal Privoznik
0cabcd98f1 virWaitForDevices: Drop confusing part of comment
It's not true that there is a backup loop. There isn't. Drop this
part of the comment to not confuse anybody.

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2019-05-17 15:08:59 +02:00
Michal Privoznik
cb0c3a7066 virCommand: Make virCommandPassFDGetFDIndex fail if passed command is in error state
The idea of virCommand* APIs is that a possible error that
occurred while constructing cmd line is kept in virCommand
struct. If that's the case all subsequent calls to virCommand*()
are NO-OPs or they return an error. Well,
virCommandPassFDGetFDIndex() is not honoring that.

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
2019-05-14 15:58:30 +02:00
Huaqiang
e34c028af1 virresctrl: Sort resctrl array correctly in virResctrlMonitorGetStats()
The qsort element is a pointer of virResctrlMonitorStats, and
the comparing function's arguments have a type of pointer of
virResctrlMonitorStatsPtr.

Signed-off-by: Huaqiang <huaqiang.wang@intel.com>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
2019-05-13 14:38:58 +02:00
Michal Privoznik
ac10f838f9 virSysinfoParseX86BaseBoard: Free memory upfront if no board detected
If no board was detected then VIR_REALLOC_N() done at the end of
the function will actually free the memory (because nborads ==
0), but @boards will be set to a non-NULL pointer. This makes it
unnecessary harder for a caller to see if any board was detected.

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
2019-05-10 13:54:26 +02:00
Michal Privoznik
c57b205ccf virSysinfoRead: Simplify #ifdef underbush
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
2019-05-10 13:54:26 +02:00
Michal Privoznik
14b74ab625 virBuffer: Try harder to free buffer
Currently, the way virBufferFreeAndReset() works is it relies on
virBufferContentAndReset() to fetch the buffer content which is
then freed. This works as long as there is no bug in virBuffer*
implementation (not true apparently). Explicitly call free() over
buffer content.

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
2019-05-06 09:33:10 +02:00
Michal Privoznik
967f555da7 virbuffer: Use signed integer for storing error
The @error member can contain a positive value (errno) or a
negative value (-1) to denote a usage error. It doesn't make
much sense to store it as unsigned then.

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
2019-05-04 23:39:35 +02:00
Michal Privoznik
babb4e6d31 virbuffer: Don't leak memory in virBufferAddBuffer
If an error occurs in a virBuffer* API the idea is to free the
content immediately and set @error member used in error reporting
later. Well, this is not what how virBufferAddBuffer works.

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
2019-05-04 23:39:35 +02:00
Julio Faracco
596aa144c4 util: Fix uninitalized variable to avoid garbage value.
This commit is similar with 692400f4. It fixes an uninitialized
variable to avoid garbage value. This case, returns 0 jiffies if an
error occurs with virNetDevBridgeGet.

Signed-off-by: Julio Faracco <jcfaracco@gmail.com>
2019-04-30 09:44:21 +02:00
Peter Krempa
4b99ba98d0 util: hash: Append to hash buckets when adding new entries
In cases when the hash function for a name collides with other entry
already in the hash we prepend to the bucket. This creates a 'stack
effect' on the buckets if we then iterate through the hash. Normally
this is not a problem, but in tests we want deterministic results.

Since it does not matter where we add the entry and it's usually more
probable that a different entry will be accessed next change it to
append to the end of the bucket. Luckily we already iterate throught the
bucket once thus we can easily find the last entry and just connect the
new entry after it.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
2019-04-25 13:28:16 +02:00
Pavel Hrdina
9470815d54 vircgroup: no need to ifdef virCgroupFree
virCgroup struct is always defined and the free function is not calling
anything that would require OS supporting cgroups.

This fixes an issue if we try to start a VM with QEMU binary that
doesn't support QXL.  The start operation will fail in
qemuProcessStartValidateVideo() which will set correct error message,
but later in one of the cleanup paths we will call
qemuDomainObjPrivateDataClear() which always calls virCgroupFree()
and that will fail on OS that doesn't support cgroups and it will
set a new error which will be eventually reported to user.

Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
2019-04-25 11:43:07 +02:00
Allen, John
51f9f80d35 Handle copying bitmaps to larger data buffers
If a bitmap of a shorter length than the data buffer is passed to
virBitmapToDataBuf, it will read off the end of the bitmap and copy junk
into the returned buffer. Add a check to only copy the length of the
bitmap to the buffer.

The problem can be observed after setting a vcpu affinity using the vcpupin
command on a system with a large number of cores:
  # virsh vcpupin example_domain 0 0
  # virsh vcpupin example_domain 0
     VCPU   CPU Affinity
    ---------------------------
     0      0,192,197-198,202

Signed-off-by: John Allen <john.allen@amd.com>
2019-04-25 10:18:48 +02:00
Daniel P. Berrangé
80772a58b6 util: add API for copying virtual port profile data
Reviewed-by: Laine Stump <laine@laine.org>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
2019-04-17 14:12:56 +01:00
Daniel P. Berrangé
de938b92c9 util: add helper method for re-attaching a tap device to a bridge
Reviewed-by: Cole Robinson <crobinso@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
2019-04-16 14:44:53 +01:00
Daniel P. Berrangé
bbe2aa627f conf: simplify link from hostdev back to network device
hostdevs have a link back to the original network device. This is fairly
generic accepting any type of device, however, we don't intend to make
use of this approach in future. It can thus be specialized to network
devices.

Reviewed-by: Cole Robinson <crobinso@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
2019-04-16 14:44:53 +01:00
Laine Stump
687f556750 util: eliminate duplicate function virDBusMessageRead
When virDBusMessageRead() and virDBusMessageDecode were first added in
commit 834c9c94, they were identical except that virDBusMessageRead()
would unref the message after decoding it.

This difference was eliminated later in commit dc7f3ffc after it
became apparent that unref-ing the message so soon was never the right
thing to do. The two identical functions remained though, with the
tests and virDBus library itself calling the Decode variant, and all
other users calling the Read variant.

This patch eliminates the duplication, switching all users to
virDBusMessageDecode (and moving the nice API documentation comment
from the Read function up to the Decode function).

Signed-off-by: Laine Stump <laine@laine.org>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
2019-04-15 12:47:44 -04:00
Andrea Bolognani
b6e6de9974 util: Fix NAME section for virkey{code,name}-*
Spotted by Lintian (manpage-has-bad-whatis-entry tag).

Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Martin Kletzander <mkletzan@redhat.com>
2019-04-15 16:20:46 +02:00
Michal Privoznik
ae3d812b00 virhostcpu: Make virHostCPUGetMSR() work only on x86
Model specific registers are a thing only on x86. Also, the
/dev/cpu/0/msr path exists only on Linux and the fallback
mechanism (asking KVM) exists on Linux and FreeBSD only.

Therefore, move the function within #ifdef that checks all
aforementioned constraints and provide a dummy stub for all
other cases.

This fixes the build on my arm box, mingw-* builds, etc.

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Jiri Denemark <jdenemar@redhat.com>
2019-04-15 09:46:27 +02:00
Michal Privoznik
b9991e8386 virhostcpu.c: Fix misalignment in virHostCPUGetMSRFromKVM comment
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Jiri Denemark <jdenemar@redhat.com>
2019-04-15 09:39:11 +02:00
Jiri Denemark
df4b46737f vircpuhost: Add support for reading MSRs
The new virHostCPUGetMSR internal API will try to read the MSR from
/dev/cpu/0/msr and if it is not possible (the device does not exist or
libvirt is running unprivileged), it will fallback to asking KVM for the
MSR using KVM_GET_MSRS ioctl.

Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2019-04-12 22:53:40 +02:00
Andrea Bolognani
03a07357e1 maint: Add filetype annotations to Makefile.inc.am
Vim has trouble figuring out the filetype automatically because
the name doesn't follow existing conventions; annotations like
the ones we already have in Makefile.ci help it out.

Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
2019-04-12 16:55:38 +02:00
Michal Privoznik
51f17c98f6 lib: Don't use virReportSystemError() if virCommandRun() fails
Firstly, virCommandRun() does report an error on failure (which
in most cases is more accurate than what we overwrite it with).
Secondly, usually errno is not set (or gets overwritten in the
cleanup code) which makes virReportSystemError() report useless
error messages. Drop all virReportSystemError() calls in cases
like this (I've found three occurrences).

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
2019-04-12 15:56:28 +02:00
Pavel Hrdina
e3c4befef4 virresctrl: fix MBA memory leak
The 'bandwidths' variable is allocated using VIR_RESIZE_N so it has to
be freed as well.

==118315== 8 bytes in 1 blocks are definitely lost in loss record 299 of 2,401
==118315==    at 0x4C29DAD: malloc (vg_replace_malloc.c:308)
==118315==    by 0x4C2C100: realloc (vg_replace_malloc.c:836)
==118315==    by 0x52C3FAF: virReallocN (viralloc.c:245)
==118315==    by 0x52C4079: virExpandN (viralloc.c:294)
==118315==    by 0x532BBA8: virResctrlAllocParseProcessMemoryBandwidth (virresctrl.c:1156)
==118315==    by 0x532BBA8: virResctrlAllocParseMemoryBandwidthLine (virresctrl.c:1211)
==118315==    by 0x532BBA8: virResctrlAllocParse (virresctrl.c:1414)
==118315==    by 0x532BBA8: virResctrlAllocGetGroup (virresctrl.c:1446)
==118315==    by 0x532C11D: virResctrlAllocGetDefault (virresctrl.c:1464)
==118315==    by 0x532D15E: virResctrlAllocAssign (virresctrl.c:1923)
==118315==    by 0x532D15E: virResctrlAllocCreate (virresctrl.c:2042)
==118315==    by 0x31E1ABEE: qemuProcessResctrlCreate (qemu_process.c:2596)
==118315==    by 0x31E1ABEE: qemuProcessLaunch (qemu_process.c:6444)
==118315==    by 0x31E1E341: qemuProcessStart (qemu_process.c:6721)
==118315==    by 0x31E81315: qemuDomainObjStart.constprop.50 (qemu_driver.c:7288)
==118315==    by 0x31E81A65: qemuDomainCreateWithFlags (qemu_driver.c:7341)
==118315==    by 0x54DDB4B: virDomainCreate (libvirt-domain.c:6534)

Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
2019-04-12 12:39:42 +02:00
Cole Robinson
1d31526b52 Always put _LAST enums on second line of VIR_ENUM_IMPL
Standardize on putting the _LAST enum value on the second line
of VIR_ENUM_IMPL invocations. Later patches that add string labels
to VIR_ENUM_IMPL will push most of these to the second line anyways,
so this saves some noise.

Signed-off-by: Cole Robinson <crobinso@redhat.com>
2019-04-11 12:47:23 -04:00