Commit Graph

180 Commits

Author SHA1 Message Date
Andrea Bolognani
cae268f7b9 syntax-check: Run flake8 on all Python scripts
Currenty we only check files that end in .py, but we have at
least a couple of scripts that don't have that suffix and we
nonetheless want to keep compliant with the code style.

Extend the sc_flake8 syntax-check rule so that any file that
contains a Python 3 shebang is fed to flake8 too.

Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
2021-03-22 12:05:18 +01:00
Andrea Bolognani
7ef4968cf7 syntax-check: Allow exceptions for sc_prohibit_nonreentrant
We're going to need it in a bit.

Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
2021-03-15 18:49:03 +01:00
Michal Privoznik
ec5b4ba8f5 syntax-check: Fix and rename virSecurity rule
The aim of virSecurity rule is to discourage from using plain
virSecurityManager*() APIs within QEMU driver in favor of their
qemuSecurity*() counterparts. The reason is simple: namespaces;
virSecurityManager*() needs additional
virSecurityManagerTransactionCommit() call to enter given
namespace and do its work from there. And that's exactly what
those qemuSecurity*() wrappers do.

To help us ensure correctness (from this POV), we have a
syntax-check rule that forbids any occurrence of
"virSecurityManager" string under src/qemu/ (except for
qemu_security of course).

But with if we want to remove virSecurityManagerPtr type, then we
have to allow "virSecurityManager *". Therefore, change the rule
so that no call of a function with "virSecurityManager" prefix is
allowed. And also change the name to better reflect what is going
on.

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2021-03-15 09:37:15 +01:00
Michal Privoznik
bea90390ca syntax-check: Update list of gethostname exceptions
The only place where gethostname() is acceptable is in
virGetHostnameImpl() which lives in src/util/virutil.c.
Reflect this in the list of exceptions for the syntax-check rule.

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2021-03-12 08:47:27 +01:00
Roman Bogorodskiy
7dd7ddac50 build-aux: require GNU grep on FreeBSD
FreeBSD 13.x and newer ship BSD grep which apparently has some
performance issues causing certain syntax check tests to run longer than
the default 30 seconds timeout used by meson.

However, GNU grep is still available through the textproc/gnugrep port,
so require it on FreeBSD if /usr/bin/grep is a BSD grep to make checks
pass in a reasonable time.

Signed-off-by: Roman Bogorodskiy <bogorodskiy@gmail.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2021-03-04 19:17:15 +04:00
Peter Krempa
fd8bfd522b util: virerror: Remove virReportOOMError
Trying to report an OOM error is pointless since our infrastructure to
report error needs to allocate memory to report the error.

In addition our code mistakenly reported OOM errors even in cases where
a function could fail for another reason, which would make issues harder
to debug.

Remove the virReportOOMError and backend so that programmers are forced
to think about what can happen. In case when there's another failure
possible a specific error should be reported and otherwise a direct
abort() is better since the logger would abort on g_new anyways.

This patch also removes the syntas-check which forces use of
virReportOOMError instead of using VIR_ERR_NO_MEMORY with other
functions. This allows possible future use when we'd end up in a
situation where trying to recover from an OOM would make sense, such as
when attempting to allocate a massive buffer.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Laine Stump <laine@redhat.com>
2021-03-02 09:50:20 +01:00
Peter Krempa
931c1d128d syntax-check: Don't forbid curly braces around single line condition body
This syntax rule doesn't make much sense, especially if there are so
much exceptions to it. Just remove it and adjust the coding style.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2020-09-15 15:20:23 +02:00
Daniel P. Berrangé
dfad1b551d remote: introduce virt-ssh-helper binary
When accessing libvirtd over a SSH tunnel, the remote driver needs a way
to proxy the SSH input/output stream to a suitable libvirt daemon. This
is currently done by spawning netcat, pointing it to the libvirtd socket
path. This is problematic for a number of reasons:

 - The socket path varies according to the --prefix chosen at build
   time. The remote client is seeing the local prefix, but what we
   need is the remote prefix

 - The socket path varies according to remote env variables, such as
   the XDG_RUNTIME_DIR location. Again we see the local XDG_RUNTIME_DIR
   value, but what we need is the remote value (if any)

 - The remote driver doesn't know whether it must connect to the legacy
   libvirtd or the modular daemons, so must always assume legacy
   libvirtd for back-compat. This means we'll always end up using the
   virtproxyd daemon adding an extra hop in the RPC layer.

 - We can not able to autospawn the libvirtd daemon for session mode
   access

To address these problems this patch introduces the 'virtd-ssh-helper'
program which takes the URI for the remote driver as a CLI parameter.
It then figures out which daemon to connect to and its socket path,
using the same code that the remote driver client would on the remote
host's build of libvirt.

Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
2020-09-09 16:46:22 +01:00
Roman Bogorodskiy
28a5096d69 build-aux: use GNU sed for syntax-check on FreeBSD
BSD sed(1) and GNU sed(1) syntax are not compatible, and as
synax-check.mk uses the GNU flavor, set SED variable to
'gsed' by default.

Signed-off-by: Roman Bogorodskiy <bogorodskiy@gmail.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
2020-09-03 18:56:03 +04:00
Michal Privoznik
95b9db4ee2 lib: Prefer WITH_* prefix for #if conditionals
Currently, we are mixing: #if HAVE_BLAH with #if WITH_BLAH.
Things got way better with Pavel's work on meson, but apparently,
mixing these two lead to confusing and easy to miss bugs (see
31fb929eca for instance). While we were forced to use HAVE_
prefix with autotools, we are free to chose our own prefix with
meson and since WITH_ prefix appears to be more popular let's use
it everywhere.

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2020-09-02 10:28:10 +02:00
Erik Skultety
e4dc0c4c16 build-aux: Get rid of 'make syntax-check' reference
Change the 'make syntax-check' reference after the switch to
meson/ninja.

Signed-off-by: Erik Skultety <eskultet@redhat.com>
2020-08-17 08:49:59 +02:00
Daniel P. Berrangé
abab5c47f8 build-aux: remove some syntax-check cruft
sc_proper_name_utf8_requires_ICONV looks for Makefile.am files, so is
not going to work correctly with meson, nor did we ever use the GNULIB
"proper_name_utf8" function.

The 'today' variable is not referenced anywhere.

The 'writable-files' target is not used anywhere

sc_prohibit_reversed_compare_failure only checks 'init.sh' which does
not exist in libvirt.

Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
2020-08-04 16:44:56 +01:00
Ján Tomko
0fd2f4310a build-aux: add sc_ prefix to more syntax checks
That way our meson build file will correctly pick them up.

Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
2020-08-03 13:54:15 +02:00
Ján Tomko
5c01b41763 build-aux: set the PYTHON variable in the Makefile
Some syntax-check rules rely on this variable.

Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
2020-08-03 13:54:15 +02:00
Pavel Hrdina
0c2aa5b513 meson: add syntax-check
This changes the approach used with autotools where it was separate make
target. With meson it will be part of the `meson test` target but can be
disabled using --no-suite syntax-check or we can run only syntax-check
by using --suite syntax-check.

Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Neal Gompa <ngompa13@gmail.com>
2020-08-03 09:27:06 +02:00
Pavel Hrdina
71f95ea1a4 meson: syntax-check: drop Makefile and m4 related checks
Rewrite to meson will eliminate most of the Makefile and all of m4
files so there is no need to check them.

We still need to ignore mk files otherwise syntax-check.mk would be
considered as well.

Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Neal Gompa <ngompa13@gmail.com>
2020-08-03 09:26:33 +02:00
Pavel Hrdina
c6a0d3ff8b po: change the format of POTFILES.in
There is no need to provide relative paths to the current directory if
we provide search paths using --directory option for xgettext.

In addition it will make libvirt.pot file look cleaner as it will not
contain relative paths to current directory. It improves the situation
for developers which are using different build path as that would
change the relative path in libvirt.pot as well. After this patch
it will not happen anymore.

Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
2020-07-10 09:40:29 +02:00
Jonathon Jongsma
9badcbbb1d nodedev: Add testing for 'mdevctl start'
Test that we run 'mdevctl' with the proper arguments when creating new
mediated devices with virNodeDeviceCreateXML().

Signed-off-by: Jonathon Jongsma <jjongsma@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
2020-06-19 10:39:55 +02:00
Peter Krempa
84a20fe8e3 qemumonitortestutils: Make test monitor failures more prominent
Until now we've tried to report errors from the test monitor code by
passing them back as failures from the qemu we simulate. This doesn't
work well in cases when the monitor logic does not detect failures or
has fallback code. Additionally there isn't much use for continuing the
test execution after first failure as in most cases the test data will
be misaligned and all other calls will fail as well.

To make the errors more obvious this patch moves away from reporting
them via the simulated monitor to reporting them to stderr and
exit()ing afterwards. While this might be less convenient
when developing tests it actually makes failures in the test suite
really obvious and doesn't require any opt-in from the tests themselves.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
2020-04-27 08:13:48 +02:00
Andrea Bolognani
936d598b89 docs: Add advanced-tests.rst
This part contains a lot of useful tips, but presenting all of them
at the same time obfuscated the central message which is, 'make check'
and 'make syntax-check' must pass after each patch in a series. Let's
move them to a separate page.

Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
2020-04-08 09:32:39 +02:00
Andrea Bolognani
5155f6f4b1 docs: Add coding-style.rst
This part represents the biggest chunk of the existing hacking.rst, and
despite that its utility is very limited because 'make syntax-check'
already guarantees most of the rules are followed over time.

Until the glorious day we finally codify our coding style completely
into a configuration for a tool such as clang-format and thus no longer
need a plain English description of it, move this part to a separate
page.

Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
2020-04-08 09:32:30 +02:00
Andrea Bolognani
b186b07940 docs: Convert hacking.html to reStructuredText
The conversion has been performed by using pandoc as a first pass,
and then tweaking the result manually until it looked satisfactory.

Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
2020-04-08 09:32:16 +02:00
Peter Krempa
b659b5f93a syntax-check: Exempt tests/qemucapabilitiesdata from 'sc_prohibit_devname'
QEMU uses the 'devname' string in the QAPI schema so a bump would
trigger this check. Exempt all of the capabilities data from the check.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2020-04-03 09:36:20 +02:00
Michal Privoznik
bf7454d145 syntax-check.mk: Drop needless _src2 variable
The aim was to break a long line, but it is not long anymore.

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
2020-03-27 16:25:48 +01:00
Michal Privoznik
c67b6a3996 syntax-check: Disallow plain fork() in src/libvirt.c
The last usage of plain fork() was removed in v0.9.7-rc1~50, but
we forgot to update the syntax-check exemption list accordingly.

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
2020-03-27 16:25:48 +01:00
Rafael Fonseca
5f9c7f0941 remote: use shared daemon startup code
Signed-off-by: Rafael Fonseca <r4f4rfs@gmail.com>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
2020-03-27 16:22:49 +01:00
Rafael Fonseca
14b12fd944 logging: use shared daemon startup code
Signed-off-by: Rafael Fonseca <r4f4rfs@gmail.com>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
2020-03-27 16:22:49 +01:00
Rafael Fonseca
0678140239 locking: use shared daemon startup code
Signed-off-by: Rafael Fonseca <r4f4rfs@gmail.com>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
2020-03-27 16:22:49 +01:00
Rafael Fonseca
fc5925f1e0 util: introduce shared daemon startup code
Several daemons have similar code around general daemon startup code.
Let's move it into a file and share it among them.

Signed-off-by: Rafael Fonseca <r4f4rfs@gmail.com>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
2020-03-27 16:22:49 +01:00
Michal Privoznik
c799d150d5 virprocess: Passthru error from virProcessRunInForkHelper
When running a function in a forked child, so far the only thing
we could report is exit status of the child and the error
message. However, it may be beneficial to the caller to know the
actual error that happened in the child.

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Pavel Mores <pmores@redhat.com>
2020-03-20 16:42:45 +01:00
Daniel P. Berrangé
fdd941eeb2 build: workaround behaviour regression in gnu make 4.3
We need the "$(space)" variable to contain a single whitespace
character. We do this by assigning and then appending an empty
string to the variable. Variable appends get separated by a
single whitespace historically, but GNU make 4.3 introduced a
behaviour regression.

  https://lists.gnu.org/archive/html/bug-make/2020-01/msg00057.html

[quote]
* WARNING: Backward-incompatibility!
  Previously appending using '+=' to an empty variable would
  result in a value starting with a space.  Now the initial
  space is only added if the variable already contains some
  value.  Similarly, appending an empty string does not
  add a trailing space.
[/quote]

This patch tries a new trick to get a single whitespace by
getting make to expand two non-existant variables separated
by a space.

Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
2020-03-16 12:07:21 +00:00
Ján Tomko
25c29ac2f5 virclosecallbacks: move to src/hypervisor
Just like virhostdev, this depends on domain_conf and
it's shared by multiple hypervisor drivers.

Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
2020-02-24 16:47:21 +01:00
Ján Tomko
a504a3c377 virhostdev: move to src/hypervisor
This module depends on domain_conf and is used directly by various
hypervisor drivers.

Move it to src/hypervisor.

Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
2020-02-24 16:47:21 +01:00
Ján Tomko
a1c2628513 syntax-check: inclusion rule for src/hypervisor
Allow it to be included by anything above mid_dirs.

Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
2020-02-24 16:47:21 +01:00
Ján Tomko
665c5dfb71 syntax-check: remove some exception mechanisms
Do not look for exception patterns in ${srcdir}./x-$@
nor the VC_LIST_EXCEPT_DEFAULT variable.

This also removes the default exception for ChangeLog.

Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
2020-02-11 11:48:08 +01:00
Ján Tomko
a275ce2ab7 syntax-check: remove README
This exception is no longer useful since README is just a symlink
to README.md, which is a subject to this check already.

Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
2020-02-11 11:48:08 +01:00
Ján Tomko
9d8d332dbd syntax-check: exclude: remove virstring
We no longer implement a wrapper over strdup - g_strdup
is preferred.

The use of strncpy was removed in:
commit 7d70a63b94
    util: Improve virStrncpy() implementation

Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
2020-02-11 11:48:08 +01:00
Ján Tomko
7a86524ddb syntax-check: exclude: remove deleted files
Both xen/xend_internal and bootstrap.conf have been deleted from git.

Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
2020-02-11 11:48:08 +01:00
Ján Tomko
73c35a3083 syntax-check: drop update-NEWS-hash
NEWS was replaced by docs/news.html, so the pre-requisite for this
rule is not fulfilled.

Also, PREV_VERSION_REGEXP does not seem to be defined anywhere.

Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
2020-02-11 11:48:08 +01:00
Ján Tomko
1a97ebae1a syntax-check: drop CVS keyword expansion check
$ date +%Y
  2020

Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
2020-02-11 11:48:08 +01:00
Ján Tomko
b491528604 syntax-check: drop vulnerable Makefile checks
As foretold, fixed automake is so common nowadays even Ubuntu 16.04
and Debian 9 have 1.11.6 as the oldest available version.

Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
2020-02-11 11:48:08 +01:00
Ján Tomko
c642199fdf syntax-check: fix sc-prohibit-cross-inclusion
Using '^' in in_vc_files assumes the build is happening
in srcdir, which is no longer possible as of:
commit f96395e78e

Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
2020-02-11 11:48:08 +01:00
Ján Tomko
04cef3b2ed syntax-check: do not enforce ChangeLog syntax
Our last conforming ChangeLog was removed from git in 2009 by:
commit 27b175b9a2
    generate ChangeLog from git logs into distribution tarball

Ten years later, it reappeared in:
commit ce97c33a79
    maint: Stop generating ChangeLog from git
which does not have a single line complying to this syntax
check rule.

At some point between the two commits VC_LIST_EXCEPT gained
a default exception for ChangeLog and it did not seem to be
overriden anywhere.

Just remove the rule.

Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
2020-02-11 11:48:07 +01:00
Daniel P. Berrangé
2621d48f00 gnulib: delete all gnulib integration
This deletes all trace of gnulib from libvirt. We still
have the keycodemapdb submodule to deal with. The simple
solution taken was to update it when running autogen.sh.

Previously gnulib could auto-trigger refresh when running
'make' too. We could figure out a solution for this, but
with the pending meson rewrite it isn't worth worrying
about, given how infrequently keycodemapdb changes.

Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
2020-02-07 15:03:54 +00:00
Daniel P. Berrangé
f8ab47cb44 util: import an event loop impl based on GMainContext
The libvirt-glib project has provided a GMainContext based
event loop impl for applications. This imports it and sets
it up for use by libvirt as the primary event loop. This
remains a private impl detail of libvirt.

IOW, applications must *NOT* assume that a call to
"virEventRegisterDefaultImpl" results in a GLib based
event loop. They should continue to use the libvirt-glib
API gvir_event_register() if they explicitly want to
guarantee a GLib event loop.

This follows the general principle that the libvirt public
API should not expose the fact that GLib is being used
internally.

Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
2020-02-07 15:03:53 +00:00
Daniel P. Berrangé
5de317b8e7 src: introduce helper API for creating GSource for socket
We need to be able to create event loop watches using the
GSource API for sockets. GIOChannel is able todo this, but
we don't want to use the GIOChannel APIs for reading/writing,
and testing shows just using its GSource APIs is unreliable
on Windows.

This patch thus creates a standalone helper API for creating
a GSource for a socket file descriptor. This impl is derived
from code in QEMU's io/channel-watch.c file that was written
by myself & Paolo Bonzini & thus under Red Hat copyright.

Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
2020-02-07 15:03:53 +00:00
Daniel P. Berrangé
7f3eb533f4 src: conditionalize use of net/if.h
The net/if.h is not portable so we must check for its
existance and avoid using it when missing. Some use
of net/if.h was redundant and could be removed.

Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
2020-01-29 14:51:40 +00:00
Peter Krempa
7e8ed7d782 virsh: Work around virSecretFree quirks
Similarly to other libvirt object freeing APIs the function resets the
libvirt error when called and doesn't take NULL gracefully. Install the
workaround and g_autoptr handlers similarly to the 'virshDomain' type.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
2020-01-28 18:09:57 +01:00
Daniel P. Berrangé
d600667278 qemu: introduce a new "virt-qemu-run" program
The previous "QEMU shim" proof of concept was taking an approach of only
caring about initial spawning of the QEMU process. It was then
registered with the libvirtd daemon who took over management of it. The
intent was that later libvirtd would be refactored so that the shim
retained control over the QEMU monitor and libvirt just forwarded APIs
to each shim as needed. This forwarding of APIs would require quite alot
of significant refactoring of libvirtd to achieve.

This impl thus takes a quite different approach, explicitly deciding to
keep the VMs completely separate from those seen & managed by libvirtd.
Instead it uses the new "qemu:///embed" URI scheme to embed the entire
QEMU driver in the shim, running with a custom root directory.

Once the driver is initialization, the shim starts a VM and then waits
to shutdown automatically when QEMU shuts down, or should kill QEMU if
it is terminated itself. This ought to use the AUTO_DESTROY feature but
that is not yet available in embedded mode, so we rely on installing a
few signal handlers to gracefully kill QEMU. This isn't reliable if
we crash of course, but you can restart with the same root dir.

Note this program does not expose any way to manage the QEMU process,
since there's no RPC interface enabled. It merely starts the VM and
cleans up when the guest shuts down at the end. This program is
installed to /usr/bin/virt-qemu-run enabling direct use by end users.
Most use cases will probably want to integrate the concept directly
into their respective application codebases. This standalone binary
serves as a nice demo though, and also provides a way to measure
performance of the startup process quite simply.

Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
2020-01-27 11:05:02 +00:00
Pavel Hrdina
c02e9621b9 syntax-check: remove deleted daemon directory from space_indent_check
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
2020-01-17 16:04:26 +01:00