Commit Graph

483 Commits

Author SHA1 Message Date
Ján Tomko
a0ac0b913e qemu_conf: split out virQEMUDriverConfigLoadSpecificTLS
Split out parts of the config parsing code to make
the parent function easier to read.

This is the only patch that mixes various augeas entry
groups in one function.

Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
2019-01-18 12:55:07 +01:00
Ján Tomko
de100ceddb qemu_conf: split out virQEMUDriverConfigLoadRemoteDisplayEntry
Split out parts of the config parsing code to make
the parent function easier to read.

Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
2019-01-18 12:55:07 +01:00
Ján Tomko
1195e10b98 qemu_conf: split out virQEMUDriverConfigLoadSaveEntry
Split out parts of the config parsing code to make
the parent function easier to read.

Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
2019-01-18 12:55:06 +01:00
Ján Tomko
0ebe4e60e6 qemu_conf: split out virQEMUDriverConfigLoadProcessEntry
Split out parts of the config parsing code to make
the parent function easier to read.

Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
2019-01-18 12:55:06 +01:00
Ján Tomko
00063c2c95 qemu_conf: split out virQEMUDriverConfigLoadDeviceEntry
Split out parts of the config parsing code to make
the parent function easier to read.

Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
2019-01-18 12:55:06 +01:00
Ján Tomko
e79e0cacc5 qemu_conf: split out virQEMUDriverConfigLoadRPCEntry
Split out parts of the config parsing code to make
the parent function easier to read.

Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
2019-01-18 12:55:06 +01:00
Ján Tomko
a780ee8ab5 qemu_conf: split out virQEMUDriverConfigLoadNetworkEntry
Split out parts of the config parsing code to make
the parent function easier to read.

Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
2019-01-18 12:55:06 +01:00
Ján Tomko
f78c3dde57 qemu_conf: split out virQEMUDriverConfigLoadLogEntry
Split out parts of the config parsing code to make
the parent function easier to read.

Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
2019-01-18 12:55:06 +01:00
Ján Tomko
627595641d qemu_conf: split out virQEMUDriverConfigLoadNVRAMEntry
Split out parts of the config parsing code to make
the parent function easier to read.

Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
2019-01-18 12:55:06 +01:00
Ján Tomko
fad7036ad4 qemu_conf: split out virQEMUDriverConfigLoadGlusterDebugEntry
Split out parts of the config parsing code to make
the parent function easier to read.

Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
2019-01-18 12:55:05 +01:00
Ján Tomko
632dab43b4 qemu_conf: split out virQEMUDriverConfigLoadSecurityEntry
Split out parts of the config parsing code to make
the parent function easier to read.

Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
2019-01-18 12:55:05 +01:00
Ján Tomko
6427aca725 qemu_conf: split out virQEMUDriverConfigLoadMemoryEntry
Split out parts of the config parsing code to make
the parent function easier to read.

Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
2019-01-18 12:55:05 +01:00
Ján Tomko
d447293893 qemu_conf: split out virQEMUDriverConfigLoadSWTPMEntry
Split out parts of the config parsing code to make
the parent function easier to read.

Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
2019-01-18 12:55:05 +01:00
Ján Tomko
926cb125a4 qemu: fill out usage-specific TLS settings after parsing
Instead of copying the default default values upfront
and then wondering whether the user has given us a new default,
leave the per-usage TLS certdirs and secrets empty during
parsing and only fill them afterwards if they weren't provided
by the user.

This means that instead of looking whether the specific certdir
paths match the default default, the Validate function (which
is called in between parsing and setting the defaults) can error
out for missing directories if the value is present, because
it must've come from the user.

Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
2019-01-17 15:53:20 +01:00
Ján Tomko
5ce02870c4 qemu.conf: fill out TLS verify attributes after parsing
Introduce a set of bool variables with the 'present' suffix
to track whether the value was actually specified.

Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
2019-01-17 15:53:20 +01:00
Michal Privoznik
fc3990c7e6 qemu: Temporary disable owner remembering
Turns out, that there are few bugs that are not that trivial to
fix (e.g. around block jobs). Instead of rushing in not
thoroughly tested fixes disable the feature temporarily for the
release.

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
ACKed-by: Peter Krempa <pkrempa@redhat.com>
2019-01-15 09:45:22 +01:00
Michal Privoznik
2ebcff3a74 qemu: Don't enable seclabel remembering for session mode
The session daemon is unable to set XATTRs in 'trusted'
namespace because it doesn't run as privileged process.
Therefore, when creating the default qemu config enable
rememberOwner only when running as privileged process.

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2019-01-10 16:15:42 +01:00
Michal Privoznik
e05d8e570b qemu.conf: Allow users to enable/disable label remembering
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2018-12-19 15:32:48 +01:00
Daniel P. Berrangé
600462834f Remove all Author(s): lines from source file headers
In many files there are header comments that contain an Author:
statement, supposedly reflecting who originally wrote the code.
In a large collaborative project like libvirt, any non-trivial
file will have been modified by a large number of different
contributors. IOW, the Author: comments are quickly out of date,
omitting people who have made significant contribitions.

In some places Author: lines have been added despite the person
merely being responsible for creating the file by moving existing
code out of another file. IOW, the Author: lines give an incorrect
record of authorship.

With this all in mind, the comments are useless as a means to identify
who to talk to about code in a particular file. Contributors will always
be better off using 'git log' and 'git blame' if they need to  find the
author of a particular bit of code.

This commit thus deletes all Author: comments from the source and adds
a rule to prevent them reappearing.

The Copyright headers are similarly misleading and inaccurate, however,
we cannot delete these as they have legal meaning, despite being largely
inaccurate. In addition only the copyright holder is permitted to change
their respective copyright statement.

Reviewed-by: Erik Skultety <eskultet@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
2018-12-13 16:08:38 +00:00
Martin Kletzander
615106fb10 qemu: Fix virDoes*Exist usage
The virGet*ID() functions should be called only if the user exists not when it
doesn't.

Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
2018-11-19 22:33:05 +01:00
Michal Privoznik
90d4caf5b9 Revert "qemu_conf: Introduce metadata_lock_manager"
This reverts commit 8b8aefb3d6.

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
2018-11-16 13:42:39 +01:00
Peter Krempa
a05bdd5533 qemu: conf: Export qemuAddSharedDisk
In cases where we know the device is a disk we can avoid using the full
device definition.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
2018-10-08 15:35:18 +02:00
Michal Privoznik
466bea0117 qemu: Temporarily disable metadata locking
Turns out, there are couple of bugs that prevent this feature
from being operational. Given how close to the release we are
disable the feature temporarily. Hopefully, it can be enabled
back after all the bugs are fixed.

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Jiri Denemark <jdenemar@redhat.com>
2018-09-27 16:22:44 +02:00
Erik Skultety
5165ff0971 src: More cleanup of some system headers already contained in internal.h
All of the ones being removed are pulled in by internal.h. The only
exception is sanlock which expects the application to include <stdint.h>
before sanlock's headers, because sanlock prototypes use fixed width
int, but they don't include stdint.h themselves, so we have to leave
that one in place.

Signed-off-by: Erik Skultety <eskultet@redhat.com>
Acked-by: Michal Privoznik <mprivozn@redhat.com>
2018-09-20 10:16:39 +02:00
Michal Privoznik
8b8aefb3d6 qemu_conf: Introduce metadata_lock_manager
This config option allows users to set and enable lock manager
for domain metadata. The lock manager is going to be used by
security drivers to serialize each other when changing a file
ownership or changing the SELinux label. The only supported lock
manager is 'lockd' for now.

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
2018-09-18 17:12:53 +02:00
Martin Kletzander
b907fd75fa qemu: Report less errors on driver startup
It is not a problem at all if the `tss` user/group does not exist, the code
fallbacks to the `root` user/group.  However we report a warning for no reason
on every start-up.  Fix this by checking if the user/group actually exists.

Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
2018-09-13 16:19:25 +02:00
Julio Faracco
bf72ab16e2 qemu: fix uninitialised variable in virQEMUDriverConfigLoadFile
Since virConfGetValueBool() can return earlier, the parameter 'value'
might be not initialised properly inside this method. Another proof:
Valgrind is returning this error during the libvirtd daemon startup:

==16199== Conditional jump or move depends on uninitialised value(s)
==16199==    at 0x27FFFEF4: virQEMUDriverConfigLoadFile (qemu_conf.c:809)
==16199==    by 0x2807665C: qemuStateInitialize (qemu_driver.c:654)
==16199==    by 0x5535428: virStateInitialize (libvirt.c:662)
==16199==    by 0x12AED8: daemonRunStateInit (remote_daemon.c:802)
==16199==    by 0x536DE18: virThreadHelper (virthread.c:206)
==16199==    by 0x6CB36DA: start_thread (pthread_create.c:463)
==16199==    by 0x6FEC88E: clone (clone.S:95)

Signed-off-by: Julio Faracco <jcfaracco@gmail.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Ján Tomko <jtomko@redhat.com>
2018-06-12 10:08:41 +02:00
Peter Krempa
c95f50cb02 qemu: conf: Remove 'allow_disk_format_probing' config option
The option is insecure and it has been long enough for users to migrate
their disk files to use explicit format. Drop the option and related
code.

The config parser still parses it and rejects statup if it's still
present in the config in enabled state.

The augeas lens is also kept so that users can disable it.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2018-06-08 09:26:37 +02:00
Stefan Berger
d9c087f57d qemu: Extend qemu_conf with tpm-emulator support
Extend qemu_conf with user and group for running the tpm-emulator
and add directories to the configuration for the locations of the
log, state, and socket of the tpm-emulator.

Also add these new directories to the QEMU Makefile.inc.am and
the RPM spec file libvirt.spec.in.

Signed-off-by: Stefan Berger <stefanb@linux.vnet.ibm.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2018-06-06 10:48:41 -04:00
ramyelkest
2b6667abbf all: Replace virGetLastError with virGetLastErrorCode where we can
Replace instances where we previously called virGetLastError just to
either get the code or to check if an error exists with
virGetLastErrorCode to avoid a validity pre-check.

Signed-off-by: Ramy Elkest <ramyelkest@gmail.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
2018-06-05 18:44:05 +02:00
Peter Krempa
ca108ab789 qemu: conf: Add qemu.conf knobs for setting up TLS for NBD
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2018-06-05 08:14:00 +02:00
Michal Privoznik
8be74af168 qemu: Introduce pr_helper to qemu.conf
Just like we allow users overriding path to bridge-helper
detected at compile time we can allow them to override path to
qemu-pr-helper.

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
2018-05-11 09:02:56 +02:00
Michal Privoznik
10f94828ea virobject: Introduce VIR_CLASS_NEW() macro
So far we are repeating the following lines over and over:

  if (!(virSomeObjectClass = virClassNew(virClassForObject(),
                             "virSomeObject",
                             sizeof(virSomeObject),
                             virSomeObjectDispose)))
      return -1;

While this works, it is impossible to do some checking. Firstly,
the class name (the 2nd argument) doesn't match the name in the
code in all cases (the 3rd argument). Secondly, the current style
is needlessly verbose. This commit turns example into following:

  if (!(VIR_CLASS_NEW(virSomeObject,
                      virClassForObject)))
      return -1;

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
2018-04-18 10:04:55 +02:00
Daniel P. Berrangé
2d43f0a2dc conf: stop passing virConnectPtr into virDomainDiskTranslateSourcePool
Rather than expecting callers to pass a virConnectPtr into the
virDomainDiskTranslateSourcePool() method, just acquire a connection
to the storage driver when needed.

Reviewed-by: John Ferlan <jferlan@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
2018-02-19 11:11:47 +00:00
Daniel P. Berrangé
12bc2b817f Revert "qemu: Expose rx/tx_queue_size in qemu.conf too"
This reverts commit 038eb472a0.

On reflection adding defaults for arbitrary guest XML device config
settings to the qemu.conf is not a sustainable path. Removing the
support for rx/tx queue size so that it doesn't set a bad precedent.

Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
2018-02-12 14:56:29 +00:00
Michal Privoznik
038eb472a0 qemu: Expose rx/tx_queue_size in qemu.conf too
In 2074ef6cd4 and c56cdf259 (and friends) we've added two
attributes to virtio NICs: rx_queue_size and tx_queue_size.
However, sysadmins might want to set these on per-host basis but
don't necessarily have an access to domain XML (e.g. because they
are generated by some other app). So let's expose them under
qemu.conf (the settings from domain XML still take precedence as
they are more specific ones).

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
2018-02-02 07:09:22 +01:00
Michal Privoznik
fec8f9c49a qemu: Use predictable file names for memory-backend-file
In some cases management application needs to allocate memory for
qemu upfront and then just let qemu use that. Since we don't want
to expose path for memory-backend-file anywhere in the domain
XML, we can generate predictable paths. In this case:

  $memoryBackingDir/libvirt/qemu/$shortName/$alias

where $shortName is result of virDomainDefGetShortName().

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
2017-11-08 10:17:17 +01:00
Michal Privoznik
ae1b5d47e5 qemu: Move memPath generation from memoryBackingDir to a separate function
In near future we will need more than just a plain VIR_STRDUP().
Better implement that in a separate function and in
qemuBuildMemoryBackendStr() which is complicated enough already.

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
2017-11-07 13:43:06 +01:00
Michal Privoznik
fe70fd0c10 conf: s/virDomainObjGetShortName/virDomainDefGetShortName/
This function works over domain definition and not domain object.
Its name is thus misleading.

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
2017-11-07 13:43:00 +01:00
Andrea Bolognani
3e7db8d3e8 Remove backslash alignment attempts
Right-aligning backslashes when defining macros or using complex
commands in Makefiles looks cute, but as soon as any changes is
required to the code you end up with either distractingly broken
alignment or unnecessarily big diffs where most of the changes
are just pushing all backslashes a few characters to one side.

Generated using

  $ git grep -El '[[:blank:]][[:blank:]]\\$' | \
    grep -E '*\.([chx]|am|mk)$$' | \
    while read f; do \
      sed -Ei 's/[[:blank:]]*[[:blank:]]\\$/ \\/g' "$f"; \
    done

Signed-off-by: Andrea Bolognani <abologna@redhat.com>
2017-11-03 13:24:12 +01:00
Ashish Mittal
bd6fdcd806 conf: Introduce TLS options for VxHS block device clients
Add a new TLS X.509 certificate type - "vxhs". This will handle the
creation of a TLS certificate capability for properly configured
VxHS network block device clients.

The following describes the behavior of TLS for VxHS block device:

  (1) Two new options have been added in /etc/libvirt/qemu.conf
      to control TLS behavior with VxHS block devices
      "vxhs_tls" and "vxhs_tls_x509_cert_dir".
  (2) Setting "vxhs_tls=1" in /etc/libvirt/qemu.conf will enable
      TLS for VxHS block devices.
  (3) "vxhs_tls_x509_cert_dir" can be set to the full path where the
      TLS CA certificate and the client certificate and keys are saved.
      If this value is missing, the "default_tls_x509_cert_dir" will be
      used instead. If the environment is not configured properly the
      authentication to the VxHS server will fail.

Signed-off-by: Ashish Mittal <Ashish.Mittal@veritas.com>
Signed-off-by: John Ferlan <jferlan@redhat.com>
2017-09-28 09:45:14 -04:00
John Ferlan
1f8528c2b8 qemu: Fix return check on virHashAddEntry call
Luckily it only returns 0 or -1
2017-09-15 08:34:57 -04:00
John Ferlan
fdab78b574 qemu: Fix bug assuming usage of default UUID for certificate passphrase
If an environment specific _tls_x509_cert_dir is provided, then
do not VIR_STRDUP the defaultTLSx509secretUUID as that would be
for the "default" environment and not the vnc, spice, chardev, or
migrate environments. If the environment needs a secret to decode
it's certificate, then it must provide the secret. If the secrets
happen to be the same, then configuration would use the same UUID
as the default (but we cannot assume that nor can we assume that
the secret would be necessary).
2017-08-15 16:10:27 -04:00
John Ferlan
dc4c2f75ab qemu: Check for existence of provided *_tls_x509_cert_dir
https://bugzilla.redhat.com/show_bug.cgi?id=1458630

Introduce virQEMUDriverConfigTLSDirResetDefaults in order to check
if the defaultTLSx509certdir was changed, then change the default
for any other *TLSx509certdir that was not set to the default default.

Introduce virQEMUDriverConfigValidate to validate the existence of
any of the *_tls_x509_cert_dir values that were uncommented/set,
incuding the default.

Update the qemu.conf description for default to describe the consequences
if the default directory path does not exist.

Signed-off-by: John Ferlan <jferlan@redhat.com>
2017-08-02 15:51:50 -04:00
dann frazier
123880d333 qemu: Add AAVMF32 to the list of known UEFIs
Add a path for UEFI VMs for AArch32 VMs, based on the path Debian is using.
libvirt is the de facto canonical location for defining where distros
should place these firmware images, so let's define this path here to try
and minimize distro fragmentation.
2017-07-21 14:36:54 -04:00
Andrea Bolognani
6c2c04e757 qemu: Clean up firmware list initialization
Instead of going through two completely different code paths,
one of which repeats the same hardcoded bit of information
three times in rapid succession, depending on whether or not
a firmware list has been provided at configure time, just
provide a reasonable default value and remove the extra code.

Signed-off-by: Andrea Bolognani <abologna@redhat.com>
2017-07-21 14:02:17 +02:00
Daniel P. Berrange
d8f8c7a83d Remove network constants out of internal.h
The HOST_NAME_MAX, INET_ADDRSTRLEN and VIR_LOOPBACK_IPV4_ADDR
constants are only used by a handful of files, so are better
kept in virsocketaddr.h or the source file that uses them.

Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
2017-07-11 13:57:11 +01:00
Jiri Denemark
215476b642 qemu: Implement virSaveCookie object and callbacks
This patch implements a new save cookie object and callbacks for qemu
driver. The actual useful content will be added in the object later.

Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
2017-06-07 13:36:01 +02:00
Jiri Denemark
25af7e950a conf: Add save cookie callbacks to xmlopt
virDomainXMLOption gains driver specific callbacks for parsing and
formatting save cookies.

Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
2017-06-07 13:36:01 +02:00
Michal Privoznik
7b4e9b2c55 virQEMUDriverDomainABIStability: Check for memoryBacking
https://bugzilla.redhat.com/show_bug.cgi?id=1450349

Problem is, qemu fails to load guest memory image if these
attribute change on migration/restore from an image.

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
2017-06-05 09:18:34 +02:00