When rewriting the virDomainDiskTranslateSourcePool() function in
v6.1.0-rc1~184 a typo was introduced. Previously, we allowed
startup policy only for those volumes which translated to
VIR_STORAGE_TYPE_FILE. But starting with the referenced commit,
the value we checked for was changed to VIR_STORAGE_VOL_FILE
which comes from a different enum and has a different value too.
This is wrong, because virStorageSourceGetActualType() returns a
value from the original enum.
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1811728
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
When preparing images for block jobs we modify their seclabels so
that QEMU can open them. However, as mentioned in the previous
commit, secdrivers base some it their decisions whether the image
they are working on is top of of the backing chain. Fortunately,
in places where we call secdrivers we know this and the
information can be passed to secdrivers.
The problem is the following: after the first blockcommit from
the base to one of the parents the XATTRs on the base image are
not cleared and therefore the second attempt to do another
blockcommit fails. This is caused by blockcommit code calling
qemuSecuritySetImageLabel() over the base image, possibly
multiple times (to ensure RW/RO access). A naive fix would be to
call the restore function. But this is not possible, because that
would deny QEMU the access to the base image. Fortunately, we
can use the fact that seclabels are remembered only for the top
of the backing chain and not for the rest of the backing chain.
And thanks to the previous commit we can tell secdrivers which
images are top of the backing chain.
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1803551
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
Our decision whether to remember seclabel for a disk image
depends on a few factors. If the image is readonly or shared or
not the chain top the remembering is suppressed for the image.
However, the virSecurityManagerSetImageLabel() is too low level
to determine whether passed @src is chain top or not. Even though
the function has the @parent argument it does not necessarily
reflect the chain top - it only points to the top level image in
the chain we want to relabel and not to the topmost image of the
whole chain. And this can't be derived from the passed domain
definition reliably neither - in some cases (like snapshots or
block copy) the @src is added to the definition only after the
operation succeeded. Therefore, introduce a flag which callers
can use to help us with the decision.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
If only IPv6 is configured on the host, getaddrinfo with AI_ADDRCONFIG
in hints would return EAI_ADDRFAMILY for nodenames that resolve to IPv4.
Also pass AI_V4MAPPED to accept IPv4-mapped addresses on IPv6-only
systems.
Signed-off-by: Zhimin Feng <fengzhimin1@huawei.com>
[rewrote the commit message - jtomko]
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
This is the same timeout of all other daemons, and just like them
virtlogd is socket-activated, so it will automatically be started
on demand whenever that's necessary.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
In the following recent change:
commit db72866310
Author: Daniel P. Berrangé <berrange@redhat.com>
Date: Tue Jan 14 10:40:52 2020 +0000
util: add API for reading password from the console
the fact that "bufptr" pointer may point to either heap or stack
allocated data was overlooked. As a result, when the strdup was
removed, we ended up returning a pointer to the local stack to
the caller. When the caller referenced this stack pointer they
got out garbage which fairly quickly resulted in a crash.
We need to copy the stack buffer into heap memory in the username
case.
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Virtualization event types were added in 2.0.5:
https://github.com/linux-audit/audit-userspace/commit/3755e9ff
Even Ubuntu 14.04 (which we don't support) has 2.3.2.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
When spawning a thread via our virThread APIs we let pthread
spawn this helper thread which sets couple of thread local
variables (e.g. thread job name or thread worker name) and as of
v6.1.0-40-gc85256b31b it also sets pthread name (which is then
visible in `ps' output for instance). Only after these steps the
intended function is called. However, just before calling it we
free the buffer that holds the thread name which results in
invalid memory reads:
==47027== Invalid read of size 1
==47027== at 0x48389C2: strlen (vg_replace_strmem.c:459)
==47027== by 0x58BB3D6: __vfprintf_internal (vfprintf-internal.c:1645)
==47027== by 0x58CE6E0: __vasprintf_internal (vasprintf.c:57)
==47027== by 0x574BA28: g_vasprintf (in /usr/lib64/libglib-2.0.so.0.6000.7)
==47027== by 0x57240CC: g_strdup_vprintf (in /usr/lib64/libglib-2.0.so.0.6000.7)
==47027== by 0x48E0EFA: vir_g_strdup_vprintf (glibcompat.c:209)
==47027== by 0x493AA05: virLogVMessage (virlog.c:573)
==47027== by 0x493A8FE: virLogMessage (virlog.c:513)
==47027== by 0x4992FC7: virThreadJobClear (virthreadjob.c:121)
==47027== by 0x4992844: virThreadHelper (virthread.c:237)
==47027== by 0x5817496: start_thread (pthread_create.c:486)
==47027== by 0x59563CE: clone (clone.S:95)
The problem is that neither virThreadJobSetWorker() nor
virThreadJobSet() create a copy of passed name. They just set a
thread local variable to point to the buffer which is then
freed. Moving the free towards the end of the wrapper function
solves the issue.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
The 'auths' struct in the test driver was not free()d. This was easy to
miss because the default XML doesn't include auth info.
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
'template' might be used uninitialized.
Use g_autofree for everything and remove all the custom labels.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
Convert the function to use g_autofree to silence -Wmaybe-uninitialized.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
Our implementation masks GCC warnings of uninitialized use of the passed
argument. After changing this I got a load of following warnings:
src/conf/virnetworkportdef.c: In function 'virNetworkPortDefSaveStatus':
/usr/include/glib-2.0/glib/gmem.h:136:8: error: 'path' may be used uninitialized in this function [-Werror=maybe-uninitialized]
136 | if (_p) \
| ^
src/conf/virnetworkportdef.c:447:11: note: 'path' was declared here
447 | char *path;
| ^~~~
For the curious, g_clear_pointer is still safe for arguments with
side-effect. Here's the pre-processed output of trying to do a
VIR_FREE(*(test2++)):
do {
typedef char _GStaticAssertCompileTimeAssertion_1[(sizeof *(&(*(test2++))) == sizeof (gpointer)) ? 1 : -1] __attribute__((__unused__));
__typeof__((&(*(test2++)))) _pp = (&(*(test2++)));
__typeof__(*(&(*(test2++)))) _ptr = *_pp;
*_pp = ((void *)0);
if (_ptr)
(g_free) (_ptr);
} while (0) ;
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
'path' could be accessed uninitialized. Fix it by using g_autofree which
also mandates initialization.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Use 'g_autofree' to clean both 'path' and 'xml' which mandates
initialization and get rid of the 'cleanup' label and 'ret variable.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Historically threads are given a name based on the C function,
and this name is just used inside libvirt. With OS level thread
naming this name is now visible to debuggers, but also has to
fit in 15 characters on Linux, so function names are too long
in some cases.
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Setting the thread name makes it easier to debug libvirtd
when many threads are running.
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
The qemuMonitorOpenFD method has not been used since it
was first introduced.
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Libvirt has never configured the QEMU agent to support
running on a PTY implicitly. In theory an end user may
have written such an XML config, but this is reasonably
unlikely since when a bare <channel> is provided, libvirt
will auto-expand it to a UNIX socket backend.
With this change a user who has use the PTY backend will
have to switch to the UNIX backend if they wish to use
libvirt APIs for interacting with the agent. This will
not have guest ABI impact.
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
qemuMonitorJSONMakeCommandInternal does the full command construction if
you pass in what would become the value of the 'arguments' key. Refactor
the open-coded implementation to use the helper and use modern cleanup
helpers at the same time.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Make it obvious that the function always returns a valid pointer and fix
all callers.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
I've found that if my virtlogd is socket activated but the daemon
doesn't run yet, then the virt-qemu-run is killed right after it
tries to start the domain. The problem is that because the default
setting is to use virtlogd, the domain create code tries to
connect to virtlogd socket, which in turn tries to detect who is
connecting (virNetSocketGetUNIXIdentity()) and as a part of it,
it will try to open /proc/${PID_OF_SHIM}/stat which is denied by
SELinux:
type=AVC msg=audit(1582903501.927:323): avc: denied { search } for \
pid=1210 comm="virtlogd" name="1843" dev="proc" ino=37224 \
scontext=system_u:system_r:virtlogd_t:s0-s0:c0.c1023 \
tcontext=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023 tclass=dir \
permissive=0
Virtlogd reacts by closing the connection which the shim sees as
SIGPIPE. Since the default response to the signal is Term, we
don't even get to reporting any error nor to removing the
temporary directory.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
When virt-qemu-run is ran without any root directory specified on
the command line, a temporary directory is made and used instead.
But since we are using g_dir_make_tmp() to create the directory
it is going to have 0700 mode. So even though we create the whole
directory structure under it and label everything, QEMU is very
likely to not have the access. This is because in this case there
is no qemu.conf and thus distro default UID:GID is used to run
QEMU (e.g. qemu:kvm on Fedora). Change the mode of the temporary
directory so that everybody has eXecute permission.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Libvirt tries to forbid migration onto the same host and it does
that by checking if local and remote hostnames are the same and
whether local and remote UUIDs are the same. Well, the latter
makes sense but the former doesn't really because libvirtd can be
running inside an UTS namespace and hostnames can appear the same
on both sides of migration. On the other hand, host UUIDs are
unique, so rely on them when trying to prevent migration onto the
same host.
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1639596
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Gaurav Agrawal <agrawalgaurav@gnome.org>
[removed dead assignment]
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Use the 'flat' flag for 'query-named-block-nodes' if qemu supports
QEMU_CAPS_QMP_QUERY_NAMED_BLOCK_NODES_FLAT in qemuBlockGetNamedNodeData.
We don't need the data so plumb in whether qemu supports the
'flat' output.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Modern qemu allows to skip the nested redundant data in the output of
query-named-block-nodes. Plumb in the support for the argument that
enables it.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Replace qemuMonitorBlockGetNamedNodeData by qemuBlockGetNamedNodeData.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Detect the presence of the flag and make it available internally as
QEMU_CAPS_QMP_QUERY_NAMED_BLOCK_NODES_FLAT.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The monitor password callback was removed long time ago but the callback
type and variable were left around. Finish the cleanup.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Format the 'vhost-user-fs' device on the QEMU command line.
This device provides shared file system access using the FUSE protocol
carried over virtio.
The actual file server is implemented in an external vhost-user-fs device
backend process.
https://bugzilla.redhat.com/show_bug.cgi?id=1694166
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
Tested-by: Andrea Bolognani <abologna@redhat.com>
Look into /usr/share/qemu/vhost-user to see whether we can find
a suitable virtiofsd binary, in case the user did not provide one
in the domain XML.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
Tested-by: Andrea Bolognani <abologna@redhat.com>
Wire up the code to put virtiofsd in the emulator cgroup on domain
startup.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
Tested-by: Andrea Bolognani <abologna@redhat.com>
Start virtiofsd for each <filesystem> device using it.
Pre-create the socket for communication with QEMU and pass it
to virtiofsd.
Note that virtiofsd needs to run as root.
https://bugzilla.redhat.com/show_bug.cgi?id=1694166
Introduced by QEMU commit a43efa34c7d7b628cbf1ec0fe60043e5c91043ea
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
Tested-by: Andrea Bolognani <abologna@redhat.com>
This is not yet supported.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
Tested-by: Andrea Bolognani <abologna@redhat.com>
Add a 'virtiofsd_debug' option for tuning whether to run virtiofsd
in debug mode.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
Tested-by: Andrea Bolognani <abologna@redhat.com>
Add more elements for tuning the virtiofsd daemon
and the vhost-user-fs device:
<driver type='virtiofs' queue='1024' xattr='on'>
<binary path='/usr/libexec/virtiofsd'>
<cache mode='always'/>
<lock posix='off' flock='off'/>
</binary>
</driver>
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Masayoshi Mizuma <m.mizuma@jp.fujitsu.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
Tested-by: Andrea Bolognani <abologna@redhat.com>
Introduce a new 'virtiofs' driver type for filesystem.
<filesystem type='mount' accessmode='passthrough'>
<driver type='virtiofs'/>
<source dir='/path'/>
<target dir='mount_tag'>
<address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0'/>
</filesystem>
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
Tested-by: Andrea Bolognani <abologna@redhat.com>
Introduced by QEMU commit 98fc1ada4cf70af0f1df1a2d7183cf786fc7da05
virtio: add vhost-user-fs base device
Released in QEMU v4.2.0.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Tested-by: Andrea Bolognani <abologna@redhat.com>
Pass logManager to qemuExtDevicesStart for future usage.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Tested-by: Andrea Bolognani <abologna@redhat.com>
The default memlock limit is 64k which is not enough to start a single
VM. The requirements for one VM are 12k, 8k for eBPF map and 4k for eBPF
program, however, it fails to create eBPF map and program with 64k limit.
By testing I figured out that the minimal limit is 80k to start a single
VM with functional eBPF and if I add 12k I can start another one.
This leads into following calculation:
80k as memlock limit worked to start a VM with eBPF which means there
is 68k of lock memory that I was not able to figure out what was using
it. So to get a number for 4096 VMs:
68 + 12 * 4096 = 49220
If we round it up we will get 64M of memory lock limit to support 4096
VMs with default map size which can hold 64 entries for devices.
This should be good enough as a sane default and users can change it if
the need to.
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1807090
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Whenever there is a guest CPU configured in domain XML, we will call
some CPU driver APIs to validate the CPU definition and check its
compatibility with the hypervisor. Thus domains with guest CPU
specification can only be started if the guest architecture is supported
by the CPU driver. But we would add a default CPU to any domain as long
as QEMU reports it causing failures to start any domain on affected
architectures.
https://bugzilla.redhat.com/show_bug.cgi?id=1805755
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Allow format probing to work around lazy clients which did not specify
their format in the overlay. Format probing will be allowed only, if we
are able to probe the image, the probing result was successful and the
probed image does not have any backing or data file.
This relaxes the restrictions which were imposed in commit 3615e8b39b
in cases when we know that the image probing will not result in security
issues or data corruption.
We perform the image format detection and in the case that we were able
to probe the format and the format does not specify a backing store (or
doesn't support backing store) we can use this format.
With pre-blockdev configurations this will restore the previous
behaviour for the images mentioned above as qemu would probe the format
anyways. It also improves error reporting compared to the old state as
we now report that the backing chain will be broken in case when there
is a backing file.
In blockdev configurations this ensures that libvirt will not cause data
corruption by ending the chain prematurely without notifying the user,
but still allows the old semantics when the users forgot to specify the
format.
Users thus don't have to re-invent when image format detection is safe
to do.
The price for this is that libvirt will need to keep the image format
detector still current and working or replace it by invocation of
qemu-img.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
While our code can detect ISO as a separate format, qemu does not use it
as such and just passes it through as raw. Add conversion for detected
parts of the backing chain so that the validation code does not reject
it right away.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Now that this file no longer transitively includes
domain_conf.h, it can be included here.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Make the header easier to read and let the compiler inline
what it wants.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
This is pulled in via domain_conf.h somehow, but it is directly used.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
This file uses the virNetDevBandwidth*Floor helpers
without including the correct include,
relying on virnetworkportdef.h to include it.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Fixes: 17f430eb5c
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
The ParseNode function takes arguments with types
from libxml.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
There are a lots of strings being handled inside some LXC functions.
They can be moved to g_autofree to avoid declaring a return value to get
proper code cleanups. This commit is changing functions from
lxc_{controller,cgroup,fuse} only.
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Julio Faracco <jcfaracco@gmail.com>
Ever since commit c5a00350 the libxl parser invokes the emulator
to probe which device model to use.
Commit b90c4b5 introduced a workaround that used a stable path
which was very likely to result in the answer matching the default.
However the test is still affected by the host state and the binary
gets invoked if present.
Mock the libxlDomainGetEmulatorType function to stop wasting CPU
cycles every time a 'make check' is run on a system with xen installed.
For example xlconfigtest gets faster by 90 %
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Fixes: b90c4b5f50
Reviewed-by: Jim Fehlig <jfehlig@suse.com>
Take the parts affected by the host state out of DriverConfigNew
and put them into a separate function.
Adjust all the callers to call both functions.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Jim Fehlig <jfehlig@suse.com>
These hardcoded defaults do not need to be read from
the file. Move them out of libxlDriverConfigLoadFile.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Jim Fehlig <jfehlig@suse.com>
The way that our file locking works is that we open() the file we
want to lock and then use fcntl(fd, F_SETLKW, ...) to lock it.
The problem is, we are doing all of these as root which doesn't
work if the file lives on root squashed NFS, because if it does
then the open() fails. The way to resolve this is to make this a
non fatal error and leave callers deal with this (i.e. disable
remembering) - implemented in the previous commit.
https://bugzilla.redhat.com/show_bug.cgi?id=1804672
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
There are some cases where we want to remember the original owner
of a file but we fail to lock it for XATTR change (e.g. root
squashed NFS). If that is the case we error out and refuse to
start a domain. Well, we can do better if we disable remembering
for paths we haven't locked successfully.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
So far, in the lock state we are storing only the file
descriptors of the files we've locked. Therefore, when unlocking
them and something does wrong the only thing we can report is FD
number, which is not user friendly at all. But if we store paths
among with FDs we can do better error reporting.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
The virutil.h header defines a geteuid() macro for Windows platforms.
This fixes a few missed cases from:
commit b11e8cccdd
Author: Ján Tomko <jtomko@redhat.com>
Date: Sun Feb 16 23:09:15 2020 +0100
Remove virutil.h from all header files
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Commit fb01e1a44d missed including virutil.h, causing the following
compilation error
../../src/security/virt-aa-helper.c:1055:43: error: implicit declaration of
function 'virHostGetDRMRenderNode' [-Werror=implicit-function-declaration]
1055 | char *defaultRenderNode = virHostGetDRMRenderNode();
Signed-off-by: Jim Fehlig <jfehlig@suse.com>
After the split of enum functions into virenum.h,
this function does not contain anything worth including
in another header file.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Include virutil.h in all files that use it,
instead of relying on it being pulled in somehow.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Include unistd.h in all files that use it, instead
of relying on it being pulled in via virutil.h
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
There is nothing in the vircgroup.h header file
requiring virutil.h.
Remove it and include unistd.h in the C files.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Historically, this file was a dump for most of our helper
functions and needed almost everywhere.
With the introduction of virfile.h and virstring.h,
and more importantly, virenum.h and the introduction
of GLib, that is no longer true.
Remove its include from C files that don't even use it.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Prefer g_ascii_xdigit_value to virHexToBin.
Check the return value of the function and
remove the g_ascii_isxdigit calls, since
they're done anyway internally.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Laine Stump <laine@redhat.com>
When moving virclosecallbacks to src/hypervisor, I did not
adjust all the possible includes in Makefiles.
Use a path relative to src to fix the build.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Fixes: 25c29ac2f5
This *is* a no-op, but there was a period of sickening dread while
auditing to be sure that no actual confusion between bus and slot had
occurred. I hope to avoid that by following the conventional order.
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Ryan Moeller <ryan@iXsystems.com>
Reduce the complexity by isolating loop bodies in separate functions.
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Ryan Moeller <ryan@iXsystems.com>
Pull the code for registering and unregistering a bhyve monitor object
into separate functions to improve code clarity.
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Ryan Moeller <ryan@iXsystems.com>
This makes lifecycle management a bit easier thanks to ref counting, and
it is closer to what the qemu driver does.
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Ryan Moeller <ryan@iXsystems.com>
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>
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>
Currently they live in util/virhostdev.
However the virhostdev module is wrongly placed
in util, which is below conf/ in our hierarchy.
Move the functions that are actually used in conf/
to conf/ and remove the include of virhostdev.h
from domain_conf.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Take the format of the backing store from the 'meta' object directly and
use g_steal_pointer to steal the path.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
When we create the new virStorageSource from the definitions stored in
the parent we should also use the 'backingStoreRawFormat' field to
populate the format.
Callers which use virStorageSourceNewFromBacking are also fixed to stop
setting the format manually.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
We store the backing file string in the structure so we should also
store the format so that callers can be simplified.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Both callers pass false. Since we frown upon format probing, remove the
unused possibility to do the probing.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Configuring vhost-user-gpu like:
<video>
<driver name='vhostuser'/>
<model type='virtio' heads='1'/>
</video>
Triggers an apparmor denial like:
apparmor="DENIED" operation="exec" profile="libvirtd"
name="/usr/lib/qemu/vhost-user-gpu" pid=888257 comm="libvirtd"
requested_mask="x" denied_mask="x" fsuid=0 ouid=0
This helper is provided by qemu for vhost-user-gpu and thereby being
in the same path as qemu_bridge_helper. Due to that adding a rule allowing
to call uses the same path list.
Reviewed-by: Jim Fehlig <jfehlig@suse.com>
Signed-off-by: Christian Ehrhardt <christian.ehrhardt@canonical.com>
The backend name is memory-backend-memfd but we've been checking
for memory-backend-memory.
Reported by GCC on rawhide:
../../../src/internal.h:75:22: error: 'strcmp' of a string of length 21 and
an array of size 21 evaluates to nonzero [-Werror=string-compare]
../../../src/qemu/qemu_command.c:3525:20: note: in expansion of macro 'STREQ'
3525 | } else if (STREQ(backendType, "memory-backend-memory") &&
| ^~~~~
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Fixes: 24b74d187c
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
