It is only used in virstoragefile.c
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
The ldexp gnulib module adds "-lm" to the $LIBS variable if-and-only-if
the ldexp() function require linking to libm. There is no harm in
linking to libm even if it isn't required for ldexp(), so simply drop
the gnulib module.
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
We're using gnulib to get ffs, ffsl, rotl32, count_one_bits,
and count_leading_zeros. Except for rotl32 they can all be
replaced with gcc/clangs builtins. rotl32 is a one-line
trivial function.
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
stpcpy returns a pointer to the end of the string just copied
which in theory makes it easier to then copy another string
after it. We only use stpcpy in one place though and that
is trivially rewritten to avoid stpcpy with no loss in code
clarity or efficiency.
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
On Fedora 31, starting a 'mock' build alters /proc/$pid/cgroup,
probably due to usage of systemd-nspawn.
Before:
$ cat /proc/self/cgroup
0::/user.slice/user-1000.slice/...
After:
$ cat /proc/self/cgroup
1:name=systemd:/
0::/user.slice/user-1000.slice/...
The cgroupv2 code mishandles that first line in the second case, which
causes VM startup to fail with: Unable to read from
'/sys/fs/cgroup/machine/cgroup.controllers': No such file or directory
The kernel docs[1] say that the cgroupv2 path will always start with
'0::', which in the code here controllers="". Only set the v2 placement
path when we see that cgroup file entry.
[1] https://www.kernel.org/doc/html/v5.3/admin-guide/cgroup-v2.html#processeshttps://bugzilla.redhat.com/show_bug.cgi?id=1751120
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
Introduce a new set of helpers including a new data structure which
simplifies keeping and construction of lists of typed parameters.
The use of VIR_RESIZE_N in the virTypedParamsAdd API has performance
benefits but requires passing around 3 arguments. Use of them lead to a
set of macros with embedded jumps used in the qemu statistics code.
This patch introduces 'virTypedParamList' type which aggregates the
necessary list-keeping variables and also a new set of functions to add
new typed parameters to a list.
These new helpers use printf-like format string and arguments to format
the argument name as the stats code often uses indexed typed parameters.
The accessor function then allows extracting the typed parameter list in
the same format as virTypedParamsAdd* functions would do.
One additional benefit is also that the list function can easily be used
with VIR_AUTOPTR.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Some code paths already pass in pointers to strings which should be
added directly as the value of the typed parameter. To allow more
universal use of virTypedParameterAssignValue add a flag which allows to
copy the value in place.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The function is only used as a helper in virTypedParamsAddFromString.
Make it static and move it to virtypedparam-public.c.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The function is not exported in the public API thus the error
dispatching is not required.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Some of the typed parameter APIs are exported publicly, but the
implementation was intermixed with private functions. Introduce
virtypedparam-public.c, move all public API functions there and purge
the comments stating that some functions are public.
This will decrease the likelihood of messing up the expectations as well
as it will become more clear which of them are actually public.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Python3 versions less than 3.7 have very unhelpful handling
of the C locale where they assume data is 7-bit only. This
violates POSIX which requires the C locale to be 8-bit clean.
Python3 >= 3.7 now assumes that the C locale is always UTF-8.
Set env variables to force LC_CTYPE to en_US.UTF-8 so that
we get UTF-8 handling on all python versions. Note we do
not use C.UTF-8 since not all C libraries support that.
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
The wrapper reports libvirt errors for the libxml2 function so that
the same does not have to be repeated over and over.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Jiri Denemark <jdenemar@redhat.com>
Neither virThreadInitialize or virThreadOnExit do anything since we
dropped the Win32 threads impl, in favour of win-pthreads with:
commit 0240d94c36
Author: Daniel P. Berrange <berrange@redhat.com>
Date: Wed Jan 22 16:17:10 2014 +0000
Remove windows thread implementation in favour of pthreads
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
After [1] we got failure on attempt to copy empty string.
Before the patch empty string was copied successfuly.
Restore the original behaviour.
[1] 7d70a63b util: Improve virStrncpy() implementation
Signed-off-by: Nikolay Shirokovskiy <nshirokovskiy@virtuozzo.com>
Reviewed-by: Martin Kletzander <mkletzan@redhat.com>
The ports in the socket address structures returned by getaddrinfo() are
in network byte order. Convert to host byte order before returning them.
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Michael Chapman <mike@very.puzzling.org>
Add ability to import/export all the parameters associated with an
identity, so that they can be exposed via the public API.
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
We'll shortly be exposing the identity as virTypedParameter in the
public header, so it simplifies life to use that as the internal
representation too.
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
The virIdentity getters are unusual in that they return -1 to indicate
"not found" and don't report any error. Change them to return -1 for
real errors, 0 for not found, and 1 for success.
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
It is simpler to remove this unused method than to rewrite it using
typed parameters in the next patch.
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Only expose the type safe getters/setters to other code in preparation
for changing the internal storage of data.
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Remove the "UNIX" tag from the names for user name, group name,
process ID and process time, since these attributes are all usable
for non-UNIX platforms like Windows.
User ID and group ID are left with a "UNIX" tag, since there's no
equivalent on Windows. The closest equivalent concept on Windows,
SID, is a struct containing a number of integer fields, which is
commonly represented in string format instead. This would require
a separate attribute, and is left for a future exercise, since
the daemons are not currently built on Windows anyway.
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
The functions are left returning an "int" to avoid an immediate
big-bang cleanup. They'll simply never return anything other
than 0.
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Only a few of the _QUIET allocation macros are used. Since we're no
longer reporting OOM as errors, we want to eliminate all the _QUIET
variants. This starts with the easy, unused, cases.
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
The functions are left returning an "int" to avoid an immediate
big-bang cleanup. They'll simply never return anything other
than 0, except for virInsertN which can still return an error
if the requested insertion index is out of range. Interestingly
in that case, the _QUIET function would none the less report
an error.
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
The OOM handling requires special build time options which we never
enable in our CI. Even once enabled the tests are incredibly slow and
typically require manual inspection of the results to weed out false
positives.
Since there was previous agreement to switch to abort on OOM in libvirt
code, there's no point continuing to keep the unused OOM testing code.
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
This function frees a _virFirmware struct. So far, it doesn't
need to be called from outside of the module, but this will
change shortly. In the light of recent VIR_DEFINE_AUTOPTR_FUNC()
additions, do the same to virFirmwareFree().
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Cole Robinson <crobinso@redhat.com>
In recent commit of 3d21ff72e0 the virNetDevMacVLanTapOpen() and
virNetDevMacVLanTapSetup() functions were exported in our private
symbols. But these functions live in an #ifdef so they need a
stub implementation.
Then in 1b46566ee the virNetDevMacVLanIsMacvtap() function was
implemented but again, only for #idef and without stub.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
The Perl bindings for libvirt use the test driver for unit tests. This
tries to load the cpu_map/index.xml file, and when run from an
uninstalled build will fail.
The problem is that virFileActivateDirOverride is called by our various
binaries like libvirtd, virsh, but is not called when a 3rd party app
uses libvirt.so
To deal with this we allow the LIBVIRT_DIR_OVERRIDE=1 env variable to be
set and make virInitialize look for this. The 'run' script will set it,
so now build using this script to run against an uninstalled tree we
will correctly resolve files to the source tree.
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
This reverts commit 39dded7bb6.
This commit broke virpolkittest on Ubuntu 18 which has an old
dbus (v1.12.2). Any other distro with the recent one works
(v1.12.16) which hints its a bug in dbus somewhere. Revert the
commit to stop tickling it.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
If managed='no', then the tap device must already exist, and setting
of MAC address and online status (IFF_UP) is skipped.
NB: we still set IFF_VNET_HDR and IFF_MULTI_QUEUE as appropriate,
because those bits must be properly set in the TUNSETIFF we use to set
the tap device name of the handle we've opened - if IFF_VNET_HDR has
not been set and we set it the request will be honored even when
running libvirtd unprivileged; if IFF_MULTI_QUEUE is requested to be
different than how it was created, that will result in an error from
the kernel. This means that you don't need to pay attention to
IFF_VNET_HDR when creating the tap devices, but you *do* need to set
IFF_MULTI_QUEUE if you're going to use multiple queues for your tap
device.
NB2: /dev/vhost-net normally has permissions 600, so it can't be
opened by an unprivileged process. This would normally cause a warning
message when using a virtio net device from an unprivileged
libvirtd. I've found that setting the permissions for /dev/vhost-net
permits unprivileged libvirtd to use vhost-net for virtio devices, but
have no idea what sort of security implications that has. I haven't
changed libvrit's code to avoid *attempting* to open /dev/vhost-net -
if you are concerned about the security of opening up permissions of
/dev/vhost-net (probably a good idea at least until we ask someone who
knows about the code) then add <driver name='qemu'/> to the interface
definition and you'll avoid the warning message.
Note that virNetDevTapCreate() is the correct function to call in the
case of an existing device, because the same ioctl() that creates a
new tap device will also open an existing tap device.
Resolves: https://bugzilla.redhat.com/1723367 (partially)
Signed-off-by: Laine Stump <laine@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
In virNetDevMacVLanOpen(), The "retries" arg has been removed and the
value hardcoded as 10, since previously the function was only called
from one place, so it was always 10.
Signed-off-by: Laine Stump <laine@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
This function returns T if the given name is a macvtap device. This is
determined by 1) getting the ifindex of the device with that name (if
there is one), and 2) checking for existence of /dev/tapXX, where "XX"
is the ifindex learned in (1).
It's also possible to learn this by getting a netlink dump of the
interface and parsing through it to look for some attributes, but that
is complicated to figure out, takes longer to execute, and I'm lazy.
Signed-off-by: Laine Stump <laine@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
This patch adds hostdev test cases in qemuhotplugtest.c.
Note: the small tweak inside virpcimock.c was needed because
the new tests added a code path in which virHostHasIOMMU()
(virutil.c) started being called, and the mocked '/sys/kernel/'
prefix that is mocked in virpcimock.c wasn't being considered
in the opendir() mock. An alternative to avoid these situations
in virpcimock.c is implemented in the next patch.
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Shivaprasad G Bhat <sbhat@linux.vnet.ibm.com>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
In f08e6883cb I've made @pcidevs in
virHostdevReAttachPCIDevices() to be automatically unrefed using
VIR_AUTOUNREF() but I forgot to remove the line that explicitly
unrefs the object at the end of the function.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
This is an issue for LXC loop devices when you are trying to get loop
devices info using `ioctl`. Modern apps uses `/sys/dev/block` to grab
information about devices, but if you use the method mention you won't
be able to retrive the associated file with that loop device. See
example below from cryptsetup sources:
static char *_ioctl_backing_file(const char *loop)
{
struct loop_info64 lo64 = {0};
int loop_fd;
loop_fd = open(loop, O_RDONLY);
if (loop_fd < 0)
return NULL;
if (ioctl(loop_fd, LOOP_GET_STATUS64, &lo64) < 0) {
close(loop_fd);
return NULL;
}
lo64.lo_file_name[LO_NAME_SIZE-2] = '*';
lo64.lo_file_name[LO_NAME_SIZE-1] = 0;
close(loop_fd);
return strdup((char*)lo64.lo_file_name);
}
It will return an empty string because lo_file_name was not set.
Function `virFileLoopDeviceOpenSearch()` is using `ioctl` to query data,
but it is not checking `lo_file_name` field.
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Julio Faracco <jcfaracco@gmail.com>
dbus_message_new() does not construct correct replies by itself, it is
recommended to use dbus_message_new_method_return() instead.
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
When we set cpu.max period we need to parse the cpu.max file first as
it contains both quota and period values separated by space. When only
a single number is written to that file it will set quota. However,
in order to change period we need to write both values.
The code was prepared for that but mistakenly used new line to end the
string with the first value.
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1749227
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
The xenapi driver has not seen any development since its initial
contribution 9 years ago. There have been no bug reports, no patches,
and no queries about the driver on the developer or user mailing lists.
Remove the driver from the libvirt sources.
Signed-off-by: Jim Fehlig <jfehlig@suse.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Introduced by commit <c854e0bd33c7a5afb04a36465bf04f861b2efef5> that
tried to fix an issue where we would fail to parse values from files.
We cannot change the original pointer that is going to be used by
VIR_AUTOFREE.
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1747440
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
Acked-by: Peter Krempa <pkrempa@redhat.com>
The same way we check for limits when decoding typed parameters
(virTypedParamsDeserialize()) we should do the same check when
serializing them so that we don't put onto the wire more than our
limits allow. Surprisingly, we were doing so explicitly in some
places but not all of them.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Reviewed-by: Jonathon Jongsma <jjongsma@redhat.com>
All code using LOCALSTATEDIR "/run" is updated to use RUNSTATEDIR
instead. The exception is the remote driver client which still
uses LOCALSTATEDIR "/run". The client needs to connect to remote
machines which may not be using /run, so /var/run is more portable
due to the /var/run -> /run symlink.
Some duplicate paths in the apparmor code are also purged.
There's no functional change by default yet since both expressions
expand to the same value.
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Using inline authentication for storage volumes will not work properly
as libvirt requires use of the secret driver for the auth data and
thus would not be able to represent the passwords stored in the backing
store string.
Make sure that the backing store parsers return 1 which is a sign for
the caller to not use the file in certain cases.
The test data include iscsi via a json pseudo-protocol string and URIs
with the userinfo part being present.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
virStorageFileGetMetadataRecurse would include files in the backing
chain which would not really be usable by libvirt directly e.g.
when such file would be promoted to the top layer by an active block
commit as for example inline authentication data can't be represented in
the VM xml file. The idea is to use secrets for this.
With the changes to the backing store string parsers we can report and
propagate if such a thing is present in the configuration and thus start
skipping those files in the backing chain traversal code. This approach
still allows to report the appropriate backing store string in the
storage driver which doesn't directly use the backing file.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
virStorageFileGetMetadata does not report error if we can't interrogate
the file somehow. Clarify this in the description of the @report_broken
flag as it implies we should report an error in that case. The problem
is that we don't know whether there's a problem and unfortunately just
offload it to qemu.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Introduce new semantics to virStorageSourceNewFromBacking and some
of the helpers used by it which propagate the return value from the
callers.
The new return value introduced by this patch allows to notify the
calller that the parsed virStorageSource correctly describes the source
but contains data such as inline authentication which libvirt does not
want to support directly. This means that such file would e.g. unusable
as a storage source (e.g. when actively commiting the overlay to it) or
would not work with blockdev.
The caller will then be able to decide whether to consider this backing
file as viable or just fall back to qemu dealing with it.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Return the parsed storage source via an pointer in arguments and return
an integer from the function. Describe the semantics with a comment for
the function and adjust callers to the new semantics.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
virStorageSourceParseBackingURI will report special return values in
some cases. Preserve it in virStorageSourceParseBackingJSONUriStr.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Return the storage source definition via a pointer in the arguments and
document the returned values. This will simplify the possibility to
ignore certain backing store types which are not representable by
libvirt.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Automatically free the 'root' temporary variable to get rid of some
complexity.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Automatically clean the 'uri' variable and get rid of the 'cleanup'
label.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Automatically free the intermediate JSON data to get rid of the cleanup
section.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
After my previous patches we have virPCIDeviceBindToStub() and
virPCIDeviceUnbindFromStub() which really do nothing but call
virPCIDeviceBindToStubWithOverride() and
virPCIDeviceUnbindFromStubWithOverride() respectively.
Drop "WithOverride" from the names and drop the thin wrappers.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
As stated in 84f9358b18 all kernels that we are interested in
have 'drivers_override'. Drop the other, older style of
overriding PCI device driver - newid.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Tested-by: Daniel Henrique Barboza <danielhb413@gmail.com>
This function is no longer used after previous commit.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Tested-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Now that no one uses KVM style of PCI assignment we can safely
remove 'pci-stub' backend.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Tested-by: Daniel Henrique Barboza <danielhb413@gmail.com>
The KVM assignment is going to be removed shortly. Don't let the
hostdev module configure it.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Tested-by: Daniel Henrique Barboza <danielhb413@gmail.com>
There are two places where we need to create virPCIDevice from
given virDomainHostdevDef. In both places the code is duplicated.
Move them into a single function and call it from those two
places.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Tested-by: Daniel Henrique Barboza <danielhb413@gmail.com>
This module contains function to get host boot time.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Jiri Denemark <jdenemar@redhat.com>
The function takes raw UUID and formats it into string
representation. However, the comment mistakenly states that the
expected size of raw UUID buffer is VIR_UUID_RAW_LEN bytes. We
don't have such constant since v0.3.2~24. It should have been
VIR_UUID_BUFLEN.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Jiri Denemark <jdenemar@redhat.com>
Store the namespace URI as const char*, instead of in a function.
Suggested-by: Jiri Denemark <jdenemar@redhat.com>
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Jiri Denemark <jdenemar@redhat.com>
A wrapper around xmlXPathRegisterNs that will save us
from having to include xpathInternals.h everywhere
we want to use a custom namespace and open-coding
the strings already contained in virXMLNamespace.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Jiri Denemark <jdenemar@redhat.com>
A function to automatically format the xmlns:<prefix>='<uri>'
attribute for per-driver namespaces.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Jiri Denemark <jdenemar@redhat.com>
We have hardcoded the namespace prefix in various places:
1) the xmlns string stored in the 'href' function
2) the xmlXPathRegisterNs call in each parser
3) all the parsing and formatting code actually dealing
with these elements
While eliminating the third one is probably a job for an
actual XML-aware formatter, let's store the prefix separately
here in the virXMLNamespace structure so that future patches
can get rid of the first two bullets.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Jiri Denemark <jdenemar@redhat.com>
For various XMLs, we allow a custom namespace for passing unsupported
configurations.
Introduce a single structure to hold all the driver-specific functions
to remove duplication.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Jiri Denemark <jdenemar@redhat.com>
If the first value in cpu.max is "max" return from function.
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1741837
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
Reviewed-by: Jiri Denemark <jdenemar@redhat.com>
Our virStrToLong* helpers converts string to integers where it wraps
strtol standard function. After the conversion happens and there are
some remaining invalid characters our helpers will fail if the second
argument is NULL.
We need to pass pointer to string in cases where there are multiple
values in a single file.
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1741825
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
Reviewed-by: Jiri Denemark <jdenemar@redhat.com>
The virHostdevPreparePCIDevices() function works in several
steps. In the very first one, it checks if devices we want to
detach from the host are not taken already by some other domain.
However, this piece of code returns different results depending
on the stub driver used (which is not wrong per se, but keep on
reading). If the stub driver is KVM then
virHostdevIsPCINodeDeviceUsed() is called which basically checks
if a PCI device from the detach list is not used by any domain
(including the one we are preparing the device for). If that is
the case, an error is reported ("device in use") and -1 is
returned.
However, that is not what happens if the stub driver is VFIO. If
the stub driver is VFIO, then we iterate over all PCI devices
from the same IOMMU group and check if they are taken by some
other domain (because a PCI device, well IOMMU group, can't be
shared between two or more qemu processes). But we fail to check,
if the device we are trying to detach from the host is not
already taken by a domain. That is, calling
virHostdevPreparePCIDevices() over a hostdev device twice
succeeds the first time and fails too late in the second run
(fortunately, virHostdevResetAllPCIDevices() will throw an error,
but this is already too late because the PCI device in question
was moved to the list of inactive PCI devices and now it appears
in both lists).
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Tested-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
It may happen that there are two domains with the same name in
two separate drivers (e.g. qemu and lxc). That is why for PCI
devices we track both names of driver and domain combination
which has taken the device. However, when we check if given PCI
device is in use (or PCI devices from the same IOMMU group) we
compare only domain name. This means that we can mistakenly claim
device as free to use while in fact it isn't.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Tested-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
virStorageSourceUpdatePhysicalSize is called only from
qemuDomainStorageUpdatePhysical and all callers of it reset the libvirt
error if -1 is returned.
Don't bother setting the error in the first place.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The function will be reused in the qemu snapshot code. The argument is
turned into const similarly to the other virStorageFileSupports*
functions.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
If the nbd export name contains a colon, our parser would not parse it
properly as we split the string by colons. Modify the code to look up
the exportname and copy any trailing characters as the export name is
supposed to be at the end of the string.
https://bugzilla.redhat.com/show_bug.cgi?id=1733044
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Jiri Denemark <jdenemar@redhat.com>
The parent bridge configuration of the current device
should be read and reset, instead of reading the current
device configuration.
Signed-off-by: He Xin <hexin15@baidu.com>
Signed-off-by: Liu Qi <liuqi16@baidu.com>
Signed-off-by: Zhang Yu <zhangyu31@baidu.com>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Add virStorageFileSupportsCreate which allows silent check whether
virStorageFileCreate is implemented.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Modify the return value so that callers don't have to repeat logic.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
All the callers left require virPCIDeviceConfigOpen to be fatal
and only use read-only access to the config file.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
For callers that only need read-only access and don't want
an error reported.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Only a handful of function need write access to the PCI config
space. Create a wrapper function for those so that we can
open it read only by default.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
As a side effect, this also silences the possible:
internal error: Unable to get DBus system bus connection:
Failed to connect to socket /run/dbus/system_bus_socket:
No such file or directory
error, since we check upfront whether dbus is available.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Look up the binary name upfront to avoid the error:
Cannot find 'pm-is-supported' in path: No such file or directory
In that case, we just assume nodesuspend is not available.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Get rid of the ret variable as well as the cleanup label.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Back in July 2010, commit 6ea90b84 (meant to resolve
https://bugzilla.redhat.com/571991 ) added code to set the MAC address
of any tap device to the associated guest interface's MAC, but with
the first byte replaced with 0xFE. This was done in order to assure
that
1) the tap MAC and guest interface MAC were different (otherwise L2
forwarding through the tap would not work, and the kernel would
repeatedly issue a warning stating as much).
2) any bridge device that had one of these taps attached would *not*
take on the MAC of the tap (leading to network instability as
guests started and stopped)
A couple years later, https://bugzilla.redhat.com/798467 was filed,
complaining that a user could configure a tap-based guest interface to
have a MAC address that itself had a first byte of 0xFE, silently
(other than the kernel warning messages) resulting in a non-working
configuration. This was fixed by commit 5d571045, which logged an
error and failed the guest start / interface attach if the MAC's first
byte was 0xFE.
Although this restriction only reduces the potential pool of MAC
addresses from 2^46 (last two bits of byte 1 must be set to 10) by
2^32 (still 4 orders of magnitude larger than the entire IPv4 address
space), it also means that management software that autogenerates MAC
addresses must have special code to avoid an 0xFE prefix. Now after 7
years, someone has noticed this restriction and requested that we
remove it.
So instead of failing when 0xFE is found as the first byte, this patch
removes the restriction by just replacing the first byte in the tap
device MAC with 0xFA if the first byte in the guest interface is
0xFE. 0xFA is the next-highest value that still has 10 as the lowest
two bits, and still
2) meets the requirement of "tap MAC must be different from guest
interface MAC", and
3) is high enough that there should never be an issue of the attached
bridge device taking on the MAC of the tap.
The result is that *any* MAC can be chosen by management software
(although it would still not work correctly if a multicast MAC (lowest
bit of first byte set to 1) was chosen), but that's a different
issue).
Signed-off-by: Laine Stump <laine@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com
The various distros have the following libxml2 vesions:
CentOS 7: 2.9.1
Debian Stretch: 2.9.4
FreeBSD Ports: 2.9.9
Ubuntu 16.04 LTS: 2.9.3
Based on this sampling, we can reasonably bump libxml2 min
version to 2.9.1
The 'query_raw' struct field was added in version 2.6.28,
so can be assumed to exist.
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Requires adjustments to use verify_expr() which replaces
verify_true(), and to disable the new syntax check
'sc_prohibit_gnu_make_extensions' since we require GNU make.
Signed-off-by: Eric Blake <eblake@redhat.com>
Commit fed58d83 was a hack to fix a mingw build failure due to header
inclusion order resulting in a clash over the use of DATADIR,
repeating a trick made several other times in the past. Better is to
revert that, and instead use pragmas to avoid the clash in the first
place, regardless of header ordering, solving it for everyone.
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Now that the code does not refer to any libvirt headers,
except internal.h macros, it does not need to link to
any libvirt code, nor gnulib either. The only thing it
needs is yajl.
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Now that 100% of libvirt code is forbidden in a SUID environment,
we no longer need to worry about whether env variables are
trustworthy or not. The virt-login-shell setuid program, which
does not link to any libvirt code, will purge all environment
variables, except $TERM, before invoking the virt-login-shell-helper
program which uses libvirt.
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Now that 100% of libvirt code is forbidden in a SUID environment,
we no longer need to worry about whether env variables are
trustworthy or not. The virt-login-shell setuid program, which
does not link to any libvirt code, will purge all environment
variables, except $TERM, before invoking the virt-login-shell-helper
program which uses libvirt.
Thus we only need one API for env passthrough in virCommand.
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Now that none of the libvirt.so code will ever run in a setuid
context, we can remove the virIsSUID() method. The global
initializer function can just inline the check itself. The new
inlined check is slightly stronger as it also looks for a
setgid situation.
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
The virt-login-shell setuid program is now a tiny piece of code
that only uses standard libc functions, and santizes the execution
environment before invoking the real virt-login-shell-helper.
The latter is thus able to use the normal libvirt.so build,
allowing us to delete the special cut down setuid library build.
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
The previous bump to 4.4 was done in:
commit 24241c236e
Author: Daniel P. Berrange <berrange@redhat.com>
Date: Wed Jul 5 10:35:32 2017 +0100
Require use of GCC 4.4 or CLang compilers
with 4.4 picked due to RHEL-6. Since we dropped RHEL-6, the
next oldest distro is RHEL-7 (4.8.5), and thus we pick 4.8
as the new min.
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
This function does not change any of the passed addresses. It
just reads them.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
ACKed-by: Peter Krempa <pkrempa@redhat.com>
This function does not change any of the passed addresses. It
just reads them.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
ACKed-by: Peter Krempa <pkrempa@redhat.com>
This code that executes virPCIDeviceReattach in all
virPCIDevicePtr objects of a given virPCIDeviceListPtr
list is replicated twice in the code. Putting it in a helper
function helps with readability.
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
virHostdevReattachPCIDevice() is a static that simply does
a wait loop with virPCIDeviceWaitForCleanup() before
calling virPCIDeviceReattach().
This loop traces back to commit d1e5676c0d, aiming to
solve a race condition between Libvirt returning the
device back to the host and QEMU trying to access it in
the meantime, which resulted in QEMU exiting on error
and killing the guest. This happens because device_del
is asynchronous, returning OK even if the guest didn't
release the device. Commit 01abc8a1b8 moved this code
to qemu_hostdev.c, 82e8dd4cf8 added the pci-stub conditional
for the loop, 899b261127 moved the code to virhostdev.c
where it stood until now.
The intent of this wait loop is still valid: device_del
is still not bullet proof into preventing the conditions
that commit d1e5676c0d aimed to fix, especially when considering
all the architectures we must support. However, this loop
is executed only in virHostdevReattachPCIDevice(), leaving
every other virPCIDeviceReattach() call prone to that error.
Let's move the wait loop code to virPCIDeviceReattach(). This
will:
- make every reattach call safe from this race condition
with the pci-stub;
- allow for a bit of code cleanup (virHostdevReattachPCIDevice()
can be erased, and virHostdevReAttachPCIDevices() can use
virPCIDeviceReattach() directly);
- make it easier to understand the overall reattach mechanisms in
Libvirt, without the risk of a newcomer wondering why reattach
is done slightly different in some instances.
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
This code that executes virPCIDeviceReset in all virPCIDevicePtr
objects of a given virPCIDeviceListPtr list is replicated twice
in the code. Putting it in a helper function helps with
readability.
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
There is no restriction on maximum value of PCI domain. In fact,
Linux kernel uses plain atomic inc when assigning PCI domains:
drivers/pci/pci.c:static int pci_get_new_domain_nr(void)
drivers/pci/pci.c-{
drivers/pci/pci.c- return atomic_inc_return(&__domain_nr);
drivers/pci/pci.c-}
Of course, this function is called only if kernel was compiled
without PCI domain support or ACPI did not provide PCI domain.
However, QEMU still has the same restriction as us: in
set_pci_host_devaddr() QEMU checks if domain isn't greater than
0xffff. But one can argue that that's a QEMU limitation. We still
want to be able to cope with other hypervisors that don't have
this limitation (possibly).
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Currently, the way we format PCI address is using printf-s
precision, e.g. "%.4x". This works if we don't want to print any
value outside of bounds (which is usually the case). However,
turns out, PCI domain can be 0x10000 which doesn't work well with
our format strings. However, if we change the format string to
"%04x" then we still pad small values with zeroes but also we are
able to print values that are larger than four digits. In fact,
this format string used by kernel to print a PCI address:
"%04x:%02x:%02x.%d"
The other three format strings (for bus, device and function) are
changed too, so that we use the same format string as kernel.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The format string for a PCI address is copied over and over
again, often with slight adjustments. Introduce global
VIR_PCI_DEVICE_ADDRESS_FMT macro that holds the formatting string
and use it wherever possible.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
In near future, the length restriction of PCI domain is going to
be lifted. This means that our assumption that PCI address is 13
bytes long is no longer true. We can avoid this problem by making
@name dynamically allocated and thus not bother with actual
length of stringified PCI address.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
This function declares @ret variable and then uses
VIR_STEAL_PTR() to avoid freeing temporary variable @dev which is
constructed. Well, as of 267f1e6da5 we have VIR_RETURN_PTR()
macro so that we can avoid this pattern.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Export virResctrlMonitorGetStats and make
virResctrlMonitorGetCacheOccupancy obsoleted.
Signed-off-by: Wang Huaqiang <huaqiang.wang@intel.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Refactor 'virResctrlMonitorStats' to track multiple statistical
records.
Signed-off-by: Wang Huaqiang <huaqiang.wang@intel.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Refactor and rename 'virResctrlMonitorFreeStats' to
'virResctrlMonitorStatsFree' to free one
'virResctrlMonitorStatsPtr' object.
Signed-off-by: Wang Huaqiang <huaqiang.wang@intel.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
'default monitor of an allocation' is defined as the resctrl
monitor group that created along with an resctrl allocation,
which is created by resctrl file system. If the monitor group
specified in domain configuration file is happened to be a
default monitor group of an allocation, then it is not necessary
to create monitor group since it is already created. But if
an monitor group is not an allocation default group, you
should create the group under folder
'/sys/fs/resctrl/mon_groups' and fill the vcpu PIDs to 'tasks'
file.
Signed-off-by: Wang Huaqiang <huaqiang.wang@intel.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Remove the ATTRIBUTE_NONNULL(1) from virCommandSetSendBuffer()
prototype since we are checking for '!cmd' and move the initialization
if 'i' after the test for '!cmd'.
Signed-off-by: Stefan Berger <stefanb@linux.ibm.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Message-Id: <20190726205633.2041912-4-stefanb@linux.vnet.ibm.com>
Allow vTPM state encryption when swtpm_setup and swtpm support
passing a passphrase using a file descriptor.
This patch enables the encryption of the vTPM state only. It does
not encrypt the state during migration, so the destination secret
does not need to have the same password at this point.
Signed-off-by: Stefan Berger <stefanb@linux.ibm.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Extend virCommandProcessIO to include the send buffers in the poll
loop.
Signed-off-by: Stefan Berger <stefanb@linux.ibm.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Mark a virCommand's inpipe (write-end of pipe) as non-blocking so that it
will never block when we were to try to write too many bytes to it while
it doesn't have the capacity to hold them.
Signed-off-by: Stefan Berger <stefanb@linux.ibm.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Convert the struct pollfd *fds to be allocated rather than residing
on the stack. This prepares it for the next patch where the size of
the array of fds becomes dynamic.
Signed-off-by: Stefan Berger <stefanb@linux.ibm.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Implement virCommandSetSendBuffer() that allows the caller to pass a
file descriptor and buffer to virCommand. virCommand will write the
buffer into the file descriptor. That file descriptor could be the
write end of a pipe or one of the file descriptors of a socketpair.
The other file descriptor should be passed to the launched process to
read the data from.
Only implement the function to allocate memory for send buffers
and to free them later on.
Signed-off-by: Stefan Berger <stefanb@linux.ibm.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Run 'swtpm socket --print-capabilities' and
'swtpm_setup --print-capabilities' to get the JSON object of the
features the programs are supporting and parse them into a bitmap.
Signed-off-by: Stefan Berger <stefanb@linux.ibm.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Check whether previously found executables were updated and if
so look for them again. This helps to use updated features of
swtpm and its tools upon updating them.
Signed-off-by: Stefan Berger <stefanb@linux.ibm.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Refactor virTPMEmulatorInit to use a loop with parameters. This allows
for easier extension later on.
Signed-off-by: Stefan Berger <stefanb@linux.ibm.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Move qemuTPMEmulatorInit to virTPMEmulatorInit in virtpm.c and introduce
a few functions to query the executables needed for virCommands.
Add locking to protect the tool paths and return a copy of the tool paths
to callers wanting to access them so that we can run the initialization
function multiples time later on and detect when the executable gets updated.
Signed-off-by: Stefan Berger <stefanb@linux.ibm.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Add support for usage type vTPM to secret.
Extend the schema for the Secret to support the vTPM usage type
and add a test case for parsing the Secret with usage type vTPM.
Signed-off-by: Stefan Berger <stefanb@linux.ibm.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
In cgroups v2 when a new group is created by default no controller is
enabled so the detection code will not detect any controllers.
When enabling the controllers we should also store them for the group.
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
Acked-by: Peter Krempa <pkrempa@redhat.com>
When creating new group for cgroups v2 the we cannot check
cgroups.controllers for that cgroup because the directory is created
later. In that case we should check cgroups.subtree_control of parent
group to get list of controllers enabled for child cgroups.
In order to achieve that we will prefer the parent group if it exists,
the current group will be used only for root group.
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
Acked-by: Peter Krempa <pkrempa@redhat.com>
Commit d5572f62e3 forgot to add maxthreads to the non-Linux definition
of the function, thus breaking the MinGW build.
Signed-off-by: Erik Skultety <eskultet@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Acked-by: Peter Krempa <pkrempa@redhat.com>
Some VM configurations may result in a large number of threads created by
the associated qemu process which can exceed the system default limit. The
maximum number of threads allowed per process is controlled by the pids
cgroup controller and is set to 16k when creating VMs with systemd's
machined service. The maximum number of threads per process is recorded
in the pids.max file under the machine's pids controller cgroup hierarchy,
e.g.
$cgrp-mnt/pids/machine.slice/machine-qemu\\x2d1\\x2dtest.scope/pids.max
Maximum threads per process is controlled with the TasksMax property of
the systemd scope for the machine. This patch adds an option to qemu.conf
which can be used to override the maximum number of threads allowed per
qemu process. If the value of option is greater than zero, it will be set
in the TasksMax property of the machine's scope after creating the machine.
Signed-off-by: Jim Fehlig <jfehlig@suse.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Avoid the chance that sysconf(_SC_OPEN_MAX) returns -1 and thus
would cause virBitmapNew would attempt to allocate a very large
bitmap.
Found by Coverity
Signed-off-by: John Ferlan <jferlan@redhat.com>
ACKed-by: Peter Krempa <pkrempa@redhat.com>
virCgroupRemove return -1 when removing cgroup failed.
But there are retry code to remove cgroup in QemuProcessStop:
retry:
if ((ret = qemuRemoveCgroup(vm)) < 0) {
if (ret == -EBUSY && (retries++ < 5)) {
usleep(200*1000);
goto retry;
}
VIR_WARN("Failed to remove cgroup for %s",
vm->def->name);
}
The return value of qemuRemoveCgroup will never be equal to "-EBUSY",
so change the return value of virCgroupRemove if failed.
Signed-off-by: Wang Yechao <wang.yechao255@zte.com.cn>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Instead of having each caller pass in the desired logfile name, pass in
the binary name instead. The logging code can then just derive a logfile
name by appending ".log".
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
This adds detection of a Quobyte as a shared file system for live
migration.
Signed-off-by: Silvan Kaiser <silvan@quobyte.com>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
We have two functions: virPCIDeviceAddressIsEqual() defined only
on Linux and virPCIDeviceAddressEqual() defined everywhere. And
both of them do the same. Drop the former in favour of the
latter.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Libvirt treats the JSON objects as lists thus the values appear in the
order they were added. To avoid too much changes introduce a helper
which allows to prepend a string which will allow to keep certain
outputs in order.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
When querying storage metadata after a block job we re-run
virStorageFileGetMetadata on the top level storage file. This means that
the workers (virStorageFileGetMetadataInternal) must not overwrite any
pointers without freeing them.
This was not considered for src->compat and src->features. Fix it and
add a comment mentioning that.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
The function does not do any cleanup, so replace the 'cleanup' label
with return of -1 and the 'done' label with return of 0.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
This commit is similar with 596aa144. It fixes an uninitialized
variable to avoid garbage value. This case, it uses time 't' 0 if
an error occurs with virTimeMillisNowRaw.
Signed-off-by: Julio Faracco <jcfaracco@gmail.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
When spawning a child process, between fork() and exec() we close
all file descriptors and keep only those the caller wants us to
pass onto the child. The problem is how we do that. Currently, we
get the limit of opened files and then iterate through each one
of them and either close() it or make it survive exec(). This
approach is suboptimal (although, not that much in default
configurations where the limit is pretty low - 1024). We have
/proc where we can learn what FDs we hold open and thus we can
selectively close only those.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
I will optimize this code a bit in the next commit. But for that
it is better if the code lives in a separate function.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Test if our parsing of interface stats as returned by ovs-vsctl
works as expected. To achieve this without having to mock
virCommand* I'm separating parsing of stats into a separate
function.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
We run 'ovs-vsctl' nine times (first to find if interface is
there and then eight times = for each stats member separately).
This is very inefficient. I've found a way to run it once and
with a bit of help from virJSON module we can parse out stats
we need.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The new systemd activation APIs mean there is no longer a need to get
the UNIX socket path associated with a plain FD.
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
Spotted by Lintian (manpage-has-bad-whatis-entry tag).
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Martin Kletzander <mkletzan@redhat.com>
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>
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>
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>
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>
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>
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>
The function open-codes addition into an array. Use the helper instead.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
This reverts commit a5e1602090.
Getting rid of unistd.h from our headers will require more work than
just fixing the broken mingw build. Revert it until I have a more
complete proposal.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
util/virutil.h bogously included unistd.h. Drop it and replace it by
including it directly where needed.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
virutil.(c|h) is a very gross collection of random code. Remove the enum
handlers from there so we can limit the scope where virtutil.h is used.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
'viralloc.h' does not provide any type or macro which would be necessary
in headers. Prevent leakage of the inclusion.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Keeping them with viralloc.h forcibly pulls in the other stuff from
viralloc.h into other header files. This in turn creates a mess
as more and more headers pull in the 'viral' header file.
If we want to make 'viralloc.h' omnipresent we should pick a different
approach.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
This commit fixes an unitialized variable to avoid garbage value
when virNetDevBridgeGet method returns error. When, that method fails
before initialize 'val' variable, it can cause problems related to
that.
Signed-off-by: Julio Faracco <jcfaracco@gmail.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
This helper has solely to do with virObjects. Move it together with
other virObject stuff.
This also avoids the potential problem where VIR_AUTOUNREF uses
virObjectAutoUnref which is defined in virobject.h.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
This helper returns the default hugetlbfs mount point from given
array of mount points.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Since commit 66460e3 dropped support for YAJL 1, we no longer need
these.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Acked-by: Peter Krempa <pkrempa@redhat.com>
Now that we do not need to cater to YAJL 1, move the check for the
return value of yajl_gen_alloc earlier, so that we can assume it
was successful in later code.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Now that we require YAJL2, drop the code dealing with YAJL 1.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
We have tests that validate the XML formatter. Additionally almost every
guide tells users to disable JSON logging. Drop logging of output string
in virJSONValueToString.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Laine Stump <laine@laine.org>
The last step of the conversion involves copying of the generated JSON
into a separate string. We can use a virBuffer to do this as this will
also allow to subsequently use the buffer when we actually need to do
some other formatting of the string.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Laine Stump <laine@laine.org>
Use size_t for all sizes. The '*' modifier unfortunately does require an
int so a temporary variable is necessary in the tests.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Laine Stump <laine@laine.org>
This was meant to stop abusing the members directly, but we don't do
this for other internal structs. Additionally this did not stop the
test from touching the members. Remove the header obscurization.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Laine Stump <laine@laine.org>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
VIR_AUTODISPOSE_STR is similar to VIR_AUTOFREE(char *) but uses
virDispose for clearing of the stored string.
This patch also refactors VIR_DISPOSE to use the new helper which is
used for the new macro.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
commit edaf13565 modified the stats retrieval for OVS interfaces to
not fail when one of the fields was unrecognized by the ovs-vsctl
command, but ovs-vsctl was still returning an error, and libvirt was
cluttering the logs with these inconsequential error messages.
This patch modifies the GET_STAT macro to add "--if-exists" to the
ovs-vsctl command, which causes it to return an empty string (and exit
with success) if the requested statistic isn't in its database, thus
eliminating the ugly error messages from the log.
Resolves: https://bugzilla.redhat.com/1683175
Signed-off-by: Laine Stump <laine@laine.org>
Prepare for introducing a bunch of new public APIs related to
backup checkpoints by first introducing a new internal type
and errors associated with that type. Checkpoints are modeled
heavily after virDomainSnapshotPtr (both represent a point in
time of the guest), although a snapshot exists with the intent
of rolling back to that state, while a checkpoint exists to
make it possible to create an incremental backup at a later
time.
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
We can use our VIR_AUTOPTR machinery also for libxml2's xmlDoc and
xmlXPathContext.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
During startup libvirtd creates top level chains for both ipv4
and ipv6 protocols. If this fails for any reason then startup
of virtual networks is blocked.
The default virtual network, however, only requires use of ipv4
and some servers have ipv6 disabled so it is expected that ipv6
chain creation will fail. There could equally be servers with
no ipv4, only ipv6.
This patch thus makes error reporting a little more fine grained
so that it works more sensibly when either ipv4 or ipv6 is
disabled on the server. Only the protocols that are actually
used by the virtual network have errors reported.
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Checking that the derived class is larger than the requested parent
class saves us from some obvious mistakes, but as written, it does not
catch all the cases; in particular, it is easy to forget to update a
VIR_CLASS_NEW when changing the 'parent' member from virObject to
virObjectLockabale, but where the size checks don't catch that. Add a
parameter for one more layer of sanity checking.
It would be cool if we could get gcc to stringize typeof(parent) into
the string name of that type, so that we could confirm that the
precise parent class is in use rather than just a struct that happens
to have the same size as the parent class. But sizeof checks are
better than nothing.
Note that I did NOT change the fact that we require derived classes to
be larger (as the difference in size makes it easy to tell classes
apart), which means that even if a derived class has no functionality
to add (but rather exists for compiler-enforced type-safety), it must
still include a dummy member. But I did fix the wording of the error
message to match the code.
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Some modules/libraries within QEMU could make use of the XDG_ vars when
writing their data to the disk. Define the most common XDG variables
and point them to the specific driver's libDir, i.e.
XDG_CACHE_HOME -> /var/lib/libvirt/<driver>/.cache
XDG_DATA_HOME -> /var/lib/libvirt/<driver>/.local/share
XDG_CONFIG_HOME -> /var/lib/libvirt/<driver>/.config
Signed-off-by: Erik Skultety <eskultet@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
I had to inspect the code to learn whether a final virObjectUnref()
calls ALL dispose callbacks in child-to-parent order (akin to C++
destructors), or whether I manually had to call a parent-class dispose
when writing a child class dispose method. The answer is the
former. (Thankfully, since VIR_FREE wipes out pointers for safety,
even if I had guessed wrong, I probably would not have tripped over a
double-free fault when the parent dispose ran for the second time). I
also had to read the code to learn if a dispose method was even
mandatory (it is not, although getting NULL through VIR_CLASS_NEW
requires a macro). While at it, the VIR_CLASS_NEW macro requires that
the virObject component at offset 0 be reached through the name
'parent', not 'object'.
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
According to the official documentation for autoconf[1], the
correct names for these variables are abs_top_{src,build}dir
rather than abs_top{src,build}dir; in fact, we're already
using the correct names in various places, so let's just make
everything nice and consistent.
[1] https://www.gnu.org/software/autoconf/manual/autoconf-2.69/html_node/Preset-Output-Variables.html
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Martin Kletzander <mkletzan@redhat.com>
This helper performs a conversion from a "yes|no" string to a
corresponding boolean. This allows us to drop several repetitive
if-then-else string->bool conversion blocks.
Signed-off-by: Shotaro Gotanda <g.sho1500@gmail.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Similarly to CAT, when you set some values in an group, remove the group and
recreate it, the previous values will be kept there. In order to not get values
from a previous setting (a previous VM, for example), we need to set them to
sensible defaults. The same way we do that for CAT, just set the same values as
the default group has.
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
For CAT we calculate unallocated parts of the cache, however with MBA this does
not make sense as the purpose of that is to limit the bandwidth and the setting
is only proportional relative to bandwidth settings for other groups.
This means it makes sense to set the values to 100% even if there are other
groups with some allocations and that we don't need to find the available
(unallocated) bandwidth in all the groups.
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
Only PCI devices have '/sys/class/net/<ifname>/device/resource' so we
need to skip this check for all other network devices.
Without this patch and RDMA enabled libvirt will not detect any network
device that doesn't have the path above which includes 'lo', 'virbr',
'tun', etc.
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1639258
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
We can use STRNEQ() instead of STRNEQLEN() since we're only
interested in the trailing part of the string and we've
already verified that the length of file, name and suffix
are those we expect.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
ACKed-by: Peter Krempa <pkrempa@redhat.com>
It's a predicate, so bool is the appropriate return type.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
ACKed-by: Peter Krempa <pkrempa@redhat.com>
While this function is not, strictly speaking, a predicate,
it still mostly behaves like one as evidenced by the vast
majority of its callers, so using bool rather than int as
the return type makes sense.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
ACKed-by: Peter Krempa <pkrempa@redhat.com>
It's a predicate, so bool is the appropriate return type.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
ACKed-by: Peter Krempa <pkrempa@redhat.com>
This is the case-sensitive counterpart of the existing
virStringHasCaseSuffix() function.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
ACKed-by: Peter Krempa <pkrempa@redhat.com>
Despite its name, this is really just a general-purpose string
manipulation function, so it should be moved to the virstring
module and renamed accordingly.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
ACKed-by: Peter Krempa <pkrempa@redhat.com>
Despite its name, this is really just a general-purpose string
manipulation function, so it should be moved to the virstring
module and renamed accordingly.
A few trivial whitespace changes are squashed in.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
ACKed-by: Peter Krempa <pkrempa@redhat.com>
Despite its name, this is really just a general-purpose string
manipulation function, so it should be moved to the virstring
module and renamed accordingly.
In addition to the obvious s/File/String/, also tweak the name
to make it clear that the presence of the suffix is verified
using case-insensitive comparison.
A few trivial whitespace changes are squashed in.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
ACKed-by: Peter Krempa <pkrempa@redhat.com>
In these cases the check that is removed has been done a few
lines above already (as can even be seen in the context). Drop
them.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
The function does not transfer errors from 'attrBuf' and 'childBuf'
arguments into 'buf', but rather reports them right away, thus we need
to make sure that it's always checked.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
https://bugzilla.redhat.com/show_bug.cgi?id=1658504
This function is called when a domain is starting up (in qemu
driver that is when qemu cmd line is generated). It is used to
translate <disk type='volume'/> to something usable by filling in
virStorageSource (e.g. fetching disk path, or some connection URI
for a network FS). But some of these info are not stored in
status XML and thus the function is called on
qemuProcessReconnect too to reconstruct runtime data. But this
poses a problem because after the first run the mode is set to
'direct', but in the second run this triggers a failure because
mode is valid only for 'iscsi' volumes and not 'iscsi-direct'
ones.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Quite a few parts modify the XPath context current node to shift the
scope and allow easier queries. This also means that the node needs
to be restored afterwards.
Introduce a macro based on 'VIR_AUTOCLEAN' which adds a local structure
on the stack remembering the original node along with a function which
will make sure that the node is reset when the local structure leaves
scope.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The helper function is used by the VIR_AUTOUNREF macro. Prior art is to
clear the pointer even if the variable goes out of scope.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
We'd free only the first element of the vector leaking the rest.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
We don't need it as there's a separate macro for auto-freeing of string
lists.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Use of VIR_AUTOPTR and virString is confusing as it's a list and not a
single pointer. Replace it by VIR_AUTOSTRINGLIST as string lists are
basically the only sane NULL-terminated list we can have.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Similar to VIR_AUTOPTR, VIR_AUTOSTRINGLIST defines a list of strings
which will be freed if the pointer is leaving scope.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Let's make use of the auto __cleanup capabilities cleaning up any
now unnecessary goto paths.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
For consistency with other error messages, and the fact that
the object is always called a virDomainSnapshot rather than
a mere virSnapshot, include the word "domain" in the error
message.
Suggested-by: John Ferlan <jferlan@redhat.com>
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Added GPFS as shared file system recognized during live migration
security checks.
GPFS is 'IBM General Parallel File System' also called
'IBM Spectrum Scale'
BUG: https://bugzilla.redhat.com/show_bug.cgi?id=1679528
Signed-off-by: Diego Michelotto <diego.michelotto@cnaf.infn.it>
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
libvirt_iohelper is used internally by the virFileWrapperFd APIs;
more specifically, in the QEMU driver we have the doCoreDump() and
qemuDomainSaveMemory() helper functions as users, and those in turn
end up being called by the implementation of several driver APIs.
By calling virReportError() if libvirt_iohelper has failed, we
overwrite whatever generic error message QEMU might have raised
with the more useful one generated by the helper program.
After this commit, the user will be able to see the error directly
instead of having to dig in the journal or libvirtd log.
https://bugzilla.redhat.com/show_bug.cgi?id=1578741
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
virFileWrapperFdFree(), like all free functions, is supposed
to only release allocated resources, so error reporting is
better suited for virFileWrapperFdClose().
This reverts commit b0c3e93180.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
We'll want to use this function in the cleanup path soon,
and in order to be able to do that we need to make sure we
can call it multiple times on the same virFileWrapperFd
without side effects.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
virBuffer is almost always stack-allocated, but requires freeing of the
internals on error. Introduce a VIR_AUTOCLEAN function to deal with
this.
Along with the addition add a test which would leak the buffer contents
if it weren't autocleaned.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
The new utility macros are useful for variables we put on the stack but
require some cleanup. The most prominent of those is virBuffer which is
used almost exclusively in that way.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
The conversion to VIR_AUTOFREE of 'escapeList' introduced memory leak of
the copied item to be escaped:
==17517== 2 bytes in 1 blocks are definitely lost in loss record 1 of 32
==17517== at 0x483880B: malloc (vg_replace_malloc.c:309)
==17517== by 0x54D666D: strdup (in /usr/lib64/libc-2.28.so)
==17517== by 0x497663E: virStrdup (virstring.c:956)
==17517== by 0x497663E: virStrdup (virstring.c:945)
==17517== by 0x48F8853: virBufferEscapeN (virbuffer.c:707)
==17517== by 0x403C9D: testBufEscapeN (virbuftest.c:383)
==17517== by 0x405FA8: virTestRun (testutils.c:174)
==17517== by 0x403A70: mymain (virbuftest.c:517)
==17517== by 0x406BC9: virTestMain (testutils.c:1097)
==17517== by 0x5470412: (below main) (in /usr/lib64/libc-2.28.so)
[...] (all other have same backtrace as it happens in a loop)
Fix it by reverting all the VIR_AUTO nonsense in this function as there
is exactly one place where it's handled.
This effectively reverts commits:
d0a92a037196fbf6df90d261ed2fb1
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
'virBufferFreeAndReset' does not free the top level structure itself.
Additionally we almost exclusively use stack'd buffers rather than
pointers.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
This fixes a bug that has been present since the original version of
the function was pushed in commit 1ab80f3 on Nov. 26 2010 (by me). The
virSocketAddr::len was not being set.
Apparently until now we were always calling
virSocketAddrPrefixToNetmask with virSocketAddr object that was
already (coincidentally) initialized for the proper address family,
but the bug became apparent when trying to use it to fill in an
otherwise uninitialized object.
Signed-off-by: Laine Stump <laine@laine.org>
Reviewed-by: John Ferlan <jferlan@redhat.com>
The iohelper is an internal program that's only supposed to
be called by libvirt, and whatever output it might produce
will ultimately be passed to virReportError() or similar.
Since we do not want strings passed to those functions to
contain newlines, we can simply not output them in the first
place.
This is what happens in pretty much all cases already, but
in a couple instances newlines have managed to slip in.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Laine Stump <laine@laine.org>
The newline was pretty arbitrary, and we're better off
without it.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
The memory allocated by VIR_REALLOC_N() is uninitialized,
which means it's not possible to figure out whether any
output was produced at all after the fact.
Since we don't care about the previous contents of buffers,
if any, use VIR_FREE() followed by VIR_ALLOC_N() instead.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Now that virStorageSource is a subclass of virObject we can use
virObjectUnref and remove virStorageSourceFree which was a thin wrapper.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Since virStorageSource is now a subclass of virObject, we can use
VIR_AUTOUNREF instead.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Add helper for utilizing __attribute__(cleanup())) for unref-ing
instances of sublasses of virObject.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
To allow tracking a single virStorageSource in multiple structures
without extra hassle allow refcounting by turining it into an object.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Add virStorageSourceNew and refactor places allocating that structure to
use the helper.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Another misleadingly named macro.
Deprecate in favor of NULLSTR_STAR.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
commit 3bba4825 added the new function virFirewallDInterfaceSetZone()
which calledsends virDBUSCallMethod a DBusMessage** for the reply
message, but doesn't use the reply, and also doesn't free it. Since
this arg is allowed to be NULL, this patch simply sets it to NULL so
we don't have to deal with it.
Signed-off-by: Laine Stump <laine@laine.org>
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Let's make use of the auto __cleanup capabilities cleaning up any
now unnecessary goto paths.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
If we find multiple "id=" strings during processing, then we need
to force an error since we cannot have multiple <auth>'s defined
for a single source volume.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Modify code to use the VIR_AUTOCLOSE logic cleaning up any
now unnecessary goto paths.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
To prepare for subsequent change to use VIR_AUTOPTR logic rename
the @ret to @def.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
To prepare for subsequent change to use VIR_AUTOPTR logic rename
the @ret to @def.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
To prepare for subsequent change to use VIR_AUTOPTR logic rename
the @ret to @def.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
To prepare for subsequent change to use VIR_AUTOPTR logic rename
the @ret to @def.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
To prepare for subsequent change to use VIR_AUTOPTR logic rename
the @ret to @def.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Let's make use of the auto __cleanup capabilities cleaning up any
now unnecessary goto paths.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Rather than open coding virStorageFileGetRelativeBackingPath
and virStorageFileGetMetadataRecurse, let's make use of the
VIR_STEAL_PTR macro.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Let's make use of the auto __cleanup capabilities cleaning up any
now unnecessary goto paths.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Let's make use of the auto __cleanup capabilities cleaning up any
now unnecessary goto paths.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Let's make use of the auto __cleanup capabilities cleaning up any
now unnecessary goto paths.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Rather than having an error path, let's rework the code to allocate
and fill into an @authdef variable and then steal that into @ret when
we are successful leaving just a cleanup: path.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
For consistency, let's use the semicolon for all definitions.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
So far the virInitctlSetRunLevel() is fully automatic. It finds
the correct fifo to use to talk to the init and it will set the
desired runlevel. Well, callers (so far there is just one) will
need to inspect the fifo a bit just before the runlevel is set.
Therefore, expose the internal list of fifos and also allow
caller to explicitly use one.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Prior to rewrite of cgroup code we only had one backend to try.
After the rewrite the virCgroupBackendGetAll() returns both
backends (for v1 and v2). However, not both have to really be
present on the system which results in killRecursive callback
failing which in turn might mean we won't try the other backend.
At the same time, this function reports no error as it should.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Missing semicolon at the end of macros can confuse some analyzers
(like cppcheck <filename>). VIR_ONCE_GLOBAL_INIT is almost
exclusively called without an ending semicolon, but let's
standardize on using one like the other macros.
Add a dummy struct definition at the end of the macro, so
the compiler will require callers to add a semicolon.
Reviewed-by: John Ferlan <jferlan@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
Missing semicolon at the end of macros can confuse some analyzers
(like cppcheck <filename>), and we have a mix of semicolon and
non-semicolon usage through the code. Let's standardize on using
a semicolon for VIR_LOG_INIT calls.
Drop the semicolon from the final statement of the macro, so
the compiler will require callers to add a semicolon.
Reviewed-by: John Ferlan <jferlan@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
Missing semicolon at the end of macros can confuse some analyzers
(like cppcheck <filename>), and we have a mix of semicolon and
non-semicolon usage through the code. Let's standardize on using
a semicolon for VIR_ENUM_IMPL calls.
Move the verify() statement to the end of the macro and drop
the semicolon, so the compiler will require callers to add a
semicolon.
While we are touching these call sites, standardize on putting
the closing parenth on its own line, as discussed here:
https://www.redhat.com/archives/libvir-list/2019-January/msg00750.html
Reviewed-by: John Ferlan <jferlan@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
Missing semicolon at the end of macros can confuse some analyzers
(like cppcheck <filename>), and we have a mix of semicolon and
non-semicolon usage through the code. Let's standardize on using
a semicolon for VIR_ENUM_DECL calls.
Drop the semicolon from the final statement of the macro, so
the compiler will require callers to add a semicolon.
Reviewed-by: John Ferlan <jferlan@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
Just before pushing the series containing commit 3bba4825 I had added
a "return true" to the top of virFirewallDZoneExists() to measure the
impact of calling that function once per network during startup. I
found that the effect was minimal, but forgot to remove the "return
true" before pushing. This unfortunately causes a failure to start
networks on systems that have a firewalld version that doesn't support
our libvirt zone file (i.e. pretty much everyone).
This patch removes the unintended line.
Signed-off-by: Laine Stump <laine@laine.org>
virFirewallDGetBackend() reports whether firewalld is currently using
an iptables or an nftables backend.
virFirewallDGetVersion() learns the version of the firewalld running
on this system and returns it as 1000000*major + 1000*minor + micro.
virFirewallDGetZones() gets a list of all currently active firewalld
zones.
virFirewallDInterfaceSetZone() sets the firewalld zone of the given
interface.
virFirewallDZoneExists() can be used to learn whether or not a
particular zone is present and active in firewalld.
Signed-off-by: Laine Stump <laine@laine.org>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
In preparation for adding several other firewalld-specific functions,
separate the code that's unique to firewalld from the more-generic
"firewall" file.
Signed-off-by: Laine Stump <laine@laine.org>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
The vHBA/NPIV LUNs created via the udev processing of the
VPORT_CREATE command end up using the same serial value
as seen/generated by the /lib/udev/scsi_id as returned
during virStorageFileGetSCSIKey. Therefore, in order to
generate a unique enough key to be used when adding the
LUN as a volume during virStoragePoolObjAddVol a more
unique key needs to be generated for an NPIV volume.
The problem is illustrated by the following example, where
scsi_host5 is a vHBA used with the following LUNs:
$ lsscsi -tg
...
[5:0:4:0] disk fc:0x5006016844602198,0x101f00 /dev/sdh /dev/sg23
[5:0:5:0] disk fc:0x5006016044602198,0x102000 /dev/sdi /dev/sg24
...
Calling virStorageFileGetSCSIKey would return:
/lib/udev/scsi_id --device /dev/sdh --whitelisted --replace-whitespace /dev/sdh
350060160c460219850060160c4602198
/lib/udev/scsi_id --device /dev/sdh --whitelisted --replace-whitespace /dev/sdi
350060160c460219850060160c4602198
Note that althrough /dev/sdh and /dev/sdi are separate LUNs, they
end up with the same serial number used for the vol->key value.
When virStoragePoolFCRefreshThread calls virStoragePoolObjAddVol
the second LUN fails to be added with the following message
getting logged:
virHashAddOrUpdateEntry:341 : internal error: Duplicate key
To resolve this, virStorageFileGetNPIVKey will use a similar call
sequence as virStorageFileGetSCSIKey, except that it will add the
"--export" option to the call. This results in more detailed output
which needs to be parsed in order to formulate a unique enough key
to be used. In order to be unique enough, the returned value will
concatenate the target port as returned in the "ID_TARGET_PORT"
field from the command to the "ID_SERIAL" value.
Signed-off-by: John Ferlan <jferlan@redhat.com>
ACKed-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Alter the code to use the virStorageFileGetSCSIKey helper
to fetch the unique key for the SCSI disk. Alter the logic
to follow the former code which would return a duplicate
of @dev when either the virCommandRun succeeded, but returned
an empty string or when WITH_UDEV was not true.
Signed-off-by: John Ferlan <jferlan@redhat.com>
ACKed-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Alter the "real" code to return -2 on virCommandRun failure.
Alter the comments and function header to describe the function
and its returns.
Signed-off-by: John Ferlan <jferlan@redhat.com>
ACKed-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
This is mainly about /dev/sev and its default permissions 0600. Of
course, rule of 'tinfoil' would be that we can't trust anything, but the
probing code in QEMU is considered safe from security's perspective + we
can't create an udev rule for this at the moment, because ioctls and
file system permissions aren't cross-checked in kernel and therefore a
user with read permissions could issue a 'privileged' operation on SEV
which is currently only limited to root.
https://bugzilla.redhat.com/show_bug.cgi?id=1665400
Signed-off-by: Erik Skultety <eskultet@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Historically firewall rules for virtual networks were added straight
into the base chains. This works but has a number of bugs and design
limitations:
- It is inflexible for admins wanting to add extra rules ahead
of libvirt's rules, via hook scripts.
- It is not clear to the admin that the rules were created by
libvirt
- Each rule must be deleted by libvirt individually since they
are all directly in the builtin chains
- The ordering of rules in the forward chain is incorrect
when multiple networks are created, allowing traffic to
mistakenly flow between networks in one direction.
To address all of these problems, libvirt needs to move to creating
rules in its own private chains. In the top level builtin chains,
libvirt will add links to its own private top level chains.
Addressing the traffic ordering bug requires some extra steps. With
everything going into the FORWARD chain there was interleaving of rules
for outbound traffic and inbound traffic for each network:
-A FORWARD -d 192.168.3.0/24 -o virbr1 -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT
-A FORWARD -s 192.168.3.0/24 -i virbr1 -j ACCEPT
-A FORWARD -i virbr1 -o virbr1 -j ACCEPT
-A FORWARD -o virbr1 -j REJECT --reject-with icmp-port-unreachable
-A FORWARD -i virbr1 -j REJECT --reject-with icmp-port-unreachable
-A FORWARD -d 192.168.2.0/24 -o virbr0 -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT
-A FORWARD -s 192.168.2.0/24 -i virbr0 -j ACCEPT
-A FORWARD -i virbr0 -o virbr0 -j ACCEPT
-A FORWARD -o virbr0 -j REJECT --reject-with icmp-port-unreachable
-A FORWARD -i virbr0 -j REJECT --reject-with icmp-port-unreachable
The rule allowing outbound traffic from virbr1 would mistakenly
allow packets from virbr1 to virbr0, before the rule denying input
to virbr0 gets a chance to run.
What we really need todo is group the forwarding rules into three
distinct sets:
* Cross rules - LIBVIRT_FWX
-A FORWARD -i virbr1 -o virbr1 -j ACCEPT
-A FORWARD -i virbr0 -o virbr0 -j ACCEPT
* Incoming rules - LIBVIRT_FWI
-A FORWARD -d 192.168.3.0/24 -o virbr1 -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT
-A FORWARD -o virbr1 -j REJECT --reject-with icmp-port-unreachable
-A FORWARD -d 192.168.2.0/24 -o virbr0 -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT
-A FORWARD -o virbr0 -j REJECT --reject-with icmp-port-unreachable
* Outgoing rules - LIBVIRT_FWO
-A FORWARD -s 192.168.3.0/24 -i virbr1 -j ACCEPT
-A FORWARD -i virbr1 -j REJECT --reject-with icmp-port-unreachable
-A FORWARD -s 192.168.2.0/24 -i virbr0 -j ACCEPT
-A FORWARD -i virbr0 -j REJECT --reject-with icmp-port-unreachable
There is thus no risk of outgoing rules for one network mistakenly
allowing incoming traffic for another network, as all incoming rules
are evalated first.
With this in mind, we'll thus need three distinct chains linked from
the FORWARD chain, so we end up with:
INPUT --> LIBVIRT_INP (filter)
OUTPUT --> LIBVIRT_OUT (filter)
FORWARD +-> LIBVIRT_FWX (filter)
+-> LIBVIRT_FWO
\-> LIBVIRT_FWI
POSTROUTING --> LIBVIRT_PRT (nat & mangle)
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Some of the query callbacks want to know the firewall layer that was
being used for triggering the query to avoid duplicating that data.
Reviewed-by: Laine Stump <laine@laine.org>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
https://bugzilla.redhat.com/show_bug.cgi?id=1665553
Ceph can be mounted just like any other filesystem and in fact is
a shared and cluster filesystem. The filesystem magic constant
was taken from kernel sources as it is not in magic.h yet.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
We have this very handy macro called VIR_STEAL_PTR() which steals
one pointer into the other and sets the other to NULL. The
following coccinelle patch was used to create this commit:
@ rule1 @
identifier a, b;
@@
- b = a;
...
- a = NULL;
+ VIR_STEAL_PTR(b, a);
Some places were clean up afterwards to make syntax-check happy
(e.g. some curly braces were removed where the body become a one
liner).
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Upcoming patches need an array of strings for use in QMP
block-dirty-bitmap-merge. A convenience wrapper cuts down
on the verbosity of creating the array, similar to the
existing virJSONValueObjectAppendString().
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
A function that returns -1 for multiple possible failures, but only
raises a libvirt error for some of those failures, can be hard to
use correctly. Yet both of our JSON object/array appenders fall in
that pattern. True, the silent errors represent coding bugs that
none of the callers should ever trigger, while the noisy errors
represent memory failures that can happen anywhere, so we happened
to never end up failing without an error. But it is better to
either use the _QUIET memory allocation variants, and make callers
decide to report failure; or make all failure paths noisy. This
patch takes the latter approach.
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Similar to what commit 86dba8f3 did for virPortAllocatorRelease,
ignore port 0 in virPortAllocatorSetUsed.
For all the reasonable use cases the callers already check that
the port is non-zero, however if the port from the XML overflows
unsigned short and turns into 0, it can be set as used by
virPortAllocatorSetUsed but not released by virPortAllocatorRelease.
Also skip port '0' in virPortAllocatorSetUsed to make this behavior
symmetric.
The serenity was disturbed by commit 5dbda5e9 which started using
virPortAllocatorRelease instead of virPortAllocatorSetUsed (false).
https://bugzilla.redhat.com/show_bug.cgi?id=1591645
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Cole Robinson <crobinso@redhat.com>
This partially reverts 00dc991ca1.
2,030 (1,456 direct, 574 indirect) bytes in 14 blocks are definitely lost in loss record 77 of 80
at 0x4C30E96: calloc (vg_replace_malloc.c:711)
by 0x50F83AA: virAlloc (viralloc.c:143)
by 0x5178DFA: virPCIDeviceNew (virpci.c:1753)
by 0x51753E9: virPCIDeviceIterDevices (virpci.c:468)
by 0x5175EB5: virPCIDeviceGetParent (virpci.c:759)
by 0x517AB55: virPCIDeviceIsBehindSwitchLackingACS (virpci.c:2476)
by 0x517AC24: virPCIDeviceIsAssignable (virpci.c:2494)
by 0x10BF27: testVirPCIDeviceIsAssignable (virpcitest.c:229)
by 0x10D14C: virTestRun (testutils.c:174)
by 0x10C535: mymain (virpcitest.c:422)
by 0x10F1B6: virTestMain (testutils.c:1112)
by 0x10CF93: main (virpcitest.c:455)
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
This is a return argument that is to be compared against NULL on
successful return. However, it is not initialized and therefore
relies on callers setting it to NULL prior calling the function.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
The @linkdev is In/Out function parameter as second order
reference pointer so requires first order dereference for
checking NULL which can be the result of virPCIGetNetName().
Fixes: d6ee56d723 (util: change virPCIGetNetName() to not return error if device has no net name)
Signed-off-by: Radoslaw Biernacki <radoslaw.biernacki@linaro.org>
Signed-off-by: dann frazier <dann.frazier@canonical.com>
Removing redundant sections of the code
Signed-off-by: Radoslaw Biernacki <radoslaw.biernacki@linaro.org>
Signed-off-by: dann frazier <dann.frazier@canonical.com>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
libvirt wrongly assumes that VF netdev has to have the
netdev assigned to PF. There is no such requirement in SRIOV standard.
This patch change the virNetDevSwitchdevFeature() function to deal
with SRIOV devices which does not have netdev on PF. Also corrects
one comment about PF netdev assumption.
One example of such devices is ThunderX VNIC.
By applying this change, VF device is used for virNetlinkCommand() as
it is the only netdev assigned to VNIC.
Signed-off-by: Radoslaw Biernacki <radoslaw.biernacki@linaro.org>
Signed-off-by: dann frazier <dann.frazier@canonical.com>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Commit 7282f455a got rid of the VIR_WARNINGS_NO_CAST_ALIGN macro
when refactoring the code and broke the build with clang.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
I had intended to make these changes to commit d40b820c before
pushing, but forgot about it during the day between the initial review
and ACK.
Neither change is significant - just returning immediately when
virNetDevGetName() fails (instead of logging a debug message first)
and eliminating a comment that adds to confusion rather than
eliminating it. Still, the changes should be made to be more
consistent with nearly identical code just a few lines up (added in
commit 7282f455)
Signed-off-by: Laine Stump <laine@laine.org>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
When checking the setting of accept_ra, we have assumed that all
routes have a single nexthop, so the interface of the route would be
in the RTA_OIF attribute of the netlink RTM_NEWROUTE message. But
multipath routes don't have an RTA_OIF; instead, they have an
RTA_MULTIPATH attribute, which is an array of rtnexthop, with each
rtnexthop having an interface. This patch adds a loop to look at the
setting of accept_ra of the interface for every rtnexthop in the
array.
Signed-off-by: Laine Stump <laine@laine.org>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
This is about the same number of code lines, but is simpler, and more
consistent with what will be added to check another attribute in a
coming patch.
As a side effect, it
Resolves: https://bugzilla.redhat.com/1583131
Signed-off-by: Laine Stump <laine@laine.org>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
This same operation needs to be done in multiple places, so move the
inline code into a separate function.
Signed-off-by: Laine Stump <laine@laine.org>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
This is problematic if a callback function wants to send the nlmsghdr
to a library function that has no "const" in its prototype
(e.g. nlmsg_find_attr())
Signed-off-by: Laine Stump <laine@laine.org>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Essentially, bring back the old behaviour as of commit eba36a38 which
was later changed by commit ae06048bf5. Even though all the stderr
messages will eventually end up in the journal, we're not making use of
the fields journald provides.
https://bugzilla.redhat.com/show_bug.cgi?id=1592644
Signed-off-by: Erik Skultety <eskultet@redhat.com>
Acked-by: Michal Privoznik <mprivozn@redhat.com>
In 600462834f we've tried to remove Author(s): lines
from comments at the beginning of our source files. Well, in some
files while we removed the "Author" line we did not remove the
actual list of authors.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
This test checks if security label remembering works correctly.
It uses qemuSecurity* APIs to do that. And some mocking (even
though it's not real mocking as we are used to from other tests
like virpcitest). So far, only DAC driver is tested.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The arguments to the N_() macro must only ever be a literal string. It
is not possible to use macro arguments, or use macro string
concatenation in this context. The N_() macro is a no-op whose only
purpose is to act as a marker for xgettext when it extracts translatable
strings from the source code. Anything other than a literal string will
be silently ignored by xgettext.
Unfortunately this means that the clever MSG, MSG2 & MSG_EXISTS macros
used for building up error message strings have prevented any of the
error messages getting marked for translation. We must sadly, revert to
a more explicit listing of strings for now.
Reviewed-by: Jiri Denemark <jdenemar@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
The QEMU command line arguments are very long and currently all written
on a single line to /var/log/libvirt/qemu/$GUEST.log. This introduces
logic to add line breaks after every env variable and "-" optional
argument, and every positional argument. This will create a clearer log
file, which will in turn present better in bug reports when people cut +
paste from the log into a bug comment.
An example log file entry now looks like this:
2018-12-14 12:57:03.677+0000: starting up libvirt version: 5.0.0, qemu version: 3.0.0qemu-3.0.0-1.fc29, kernel: 4.19.5-300.fc29.x86_64, hostname: localhost.localdomain
LC_ALL=C \
PATH=/usr/local/bin:/usr/local/sbin:/usr/bin:/usr/sbin \
HOME=/home/berrange \
USER=berrange \
LOGNAME=berrange \
QEMU_AUDIO_DRV=none \
/usr/bin/qemu-system-ppc64 \
-name guest=guest,debug-threads=on \
-S \
-object secret,id=masterKey0,format=raw,file=/home/berrange/.config/libvirt/qemu/lib/domain-33-guest/master-key.aes \
-machine pseries-2.10,accel=tcg,usb=off,dump-guest-core=off \
-m 1024 \
-realtime mlock=off \
-smp 1,sockets=1,cores=1,threads=1 \
-uuid c8a74977-ab18-41d0-ae3b-4041c7fffbcd \
-display none \
-no-user-config \
-nodefaults \
-chardev socket,id=charmonitor,fd=23,server,nowait \
-mon chardev=charmonitor,id=monitor,mode=control \
-rtc base=utc \
-no-shutdown \
-boot strict=on \
-device qemu-xhci,id=usb,bus=pci.0,addr=0x1 \
-device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x2 \
-sandbox on,obsolete=deny,elevateprivileges=deny,spawn=deny,resourcecontrol=deny \
-msg timestamp=on
2018-12-14 12:57:03.730+0000: shutting down, reason=failed
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
The virCommand APIs do not expect to be given a NULL value for an arg
name or value. Such a mistake can lead to execution of the wrong
command, as the NULL may prematurely terminate the list of args.
Detect this and report suitable error messages.
This identified a flaw in the storage test which was passing a NULL
instead of the volume path. This flaw was then validated by an incorrect
set of qemu-img args as expected data.
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Simplify adding of new errors by just adding them to the array of
messages rather than having to add conversion code.
Additionally most of the messages add the format string part as a suffix
so we can avoid some of the duplication by using a macro which adds the
suffix to the original string. This way most messages fit into the 80
column limit and only 3 exceed 100 colums.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Erik Skultety <eskultet@redhat.com>
Clarify how @info is used and what the returned values look like.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Simplify wording of the error string for VIR_ERR_OPEN_FAILED and
VIR_ERR_CALL_FAILED. The error codes itself are currently unused so it
will not impact any client.
This will simplify upcomming patch which refactors how we convert these.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Few error codes were missing the version of the message with additional
info. In case of the modified messages it's not very likely they'll ever
report any additional data, but for the sake of consistency we should
provide them.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Additional information for an error message is either in form of a
string or empty. Fix two offenders. One used %d as the format modifier
and the second one always expected a string.
Thankfully, neither of the offenders are currently in effect.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
We do have one for the error domain but not for the error number itself.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Require that all headers are guarded by a symbol named
LIBVIRT_$FILENAME
where $FILENAME is the uppercased filename, with all characters
outside a-z changed into '_'.
Note we do not use a leading __ because that is technically a
namespace reserved for the toolchain.
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
This introduces a syntax-check script that validates header files use a
common layout:
/*
...copyright header...
*/
<one blank line>
#ifndef SYMBOL
# define SYMBOL
....content....
#endif /* SYMBOL */
For any file ending priv.h, before the #ifndef, we will require a
guard to prevent bogus imports:
#ifndef SYMBOL_ALLOW
# error ....
#endif /* SYMBOL_ALLOW */
<one blank line>
The many mistakes this script identifies are then fixed.
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
When libvirt is reconnecting to running domain that uses cgroup v2
the QEMU process reports cgroup for the emulator directory because the
main thread is in that cgroup. We need to remove the "/emulator" part
in order to match with the root cgroup directory name for that domain.
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
The rewrite to support cgroup v2 missed this function. In cgroup v2
we have different files to track tasks.
We would fail to remove cgroup on non-systemd OSes if there is any
extra process assigned to guest cgroup because we would not kill any
process form the guest cgroup.
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
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>
Most of the iptables APIs share code for the add/delete paths, but a
couple were separated. Merge the remaining APIs to facilitate future
changes.
Reviewed-by: Laine Stump <laine@laine.org>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
The function clears and frees the passed buffers on success, but not in
one case of failure. Modify the control flow that the args are always
consumed, record it in the docs and remove few pointless cleanup paths
in callers.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Up until now, we formatted 'rendernode=' onto QEMU cmdline only if the
user specified it in the XML, otherwise we let QEMU do it for us. This
causes permission issues because by default the /dev/dri/renderDX
permissions are as follows:
crw-rw----. 1 root video
There's literally no reason why it shouldn't be libvirt picking the DRM
render node instead of QEMU, that way (and because we're using
namespaces by default), we can safely relabel the device within the
namespace.
Signed-off-by: Erik Skultety <eskultet@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
This is the first step towards libvirt picking the first available
render node instead of QEMU. It also makes sense for us to be able to do
that, since we allow specifying the node directly for SPICE, so if
there's no render node specified by the user, we should pick the first
available one. The algorithm used for that is essentially the same as
the one QEMU uses.
Signed-off-by: Erik Skultety <eskultet@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The call of virResctrlMonitorGetStats will allocate the memory for
holding cache occupancy or memory bandwidth statistics.
This patch adds the function virResctrlMonitorFreeStats as the
opposing action of virResctrlMonitorGetStats to free the memory.
Signed-off-by: Wang Huaqiang <huaqiang.wang@intel.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Return a list of virResctrlMonitorStatsPtr instead of
a virResctrlMonitorStats array in virResctrlMonitorGetStats.
Signed-off-by: Wang Huaqiang <huaqiang.wang@intel.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
There are certain cases e.g. containers where the sysfs path might
exists, but might fail. Unfortunately the exact restrictions are only
known to libvirt when trying to write to it so we need to try it.
But in case it fails there is no need to fully abort, in those cases try
to fall back to the older ioctl interface which can still work.
That makes setting up a bridge in unprivileged LXD containers work.
Fixes: https://bugs.launchpad.net/ubuntu/+source/libvirt/+bug/1802906
Signed-off-by: Christian Ehrhardt <christian.ehrhardt@canonical.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Laine Stump <laine@laine.org>
Reported-by: Brian Candler <b.candler@pobox.com>
The path argument of virFileIsDir should be a full name
of file, pathname and filename. Fixed it by passing the
full path name to virFileIsDir.
Signed-off-by: Wang Huaqiang <huaqiang.wang@intel.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Since the functions only return 0 or 1, they should return bool. I missed the
change when "refactoring" the first commit.
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
Both virProcessRunInMountNamespace() and virProcessRunInFork()
look very similar. De-duplicate the code and make
virProcessRunInMountNamespace() call virProcessRunInFork().
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
This new helper can be used to spawn a child process and run
passed callback from it. This will come handy esp. if the
callback is not thread safe.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
We were mistakenly skipping virZPCIDeviceAddressIsEmpty() and
virZPCIDeviceAddressIsValid() when compiling on non-Linux,
which unsurprisingly ended up causing linking failures later
in the build process.
Clue-stick-by: Peter Krempa <pkrempa@redhat.com>
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
This patch introduces new XML parser/formatter functions. Uid is
16-bit and non-zero. Fid is 32-bit. They are the two attributes of zpci
which is introduced as PCI address element. Zpci element is parsed and
formatted along with PCI address. And add the related test cases.
Signed-off-by: Yi Min Zhao <zyimin@linux.ibm.com>
Reviewed-by: Boris Fiuczynski <fiuczy@linux.ibm.com>
Reviewed-by: Stefan Zimmermann <stzi@linux.ibm.com>
Reviewed-by: Bjoern Walk <bwalk@linux.ibm.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
This patch introduces PCI address extension flag for virDomainDeviceInfo
and virPCIDeviceAddress. The extension flag in virDomainDeviceInfo is
used internally during calculating PCI extension flag. The one in
virPCIDeviceAddress is the duplicate to indicate extension address is
being used. Currently only zPCI extension address is introduced to deal
with 'uid' and 'fid' on the S390 platform.
Signed-off-by: Yi Min Zhao <zyimin@linux.ibm.com>
Reviewed-by: Boris Fiuczynski <fiuczy@linux.ibm.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Add zPCI definitions in preparation of extending the PCI address
with parameters uid (user-defined identifier) and fid (PCI function
identifier).
Signed-off-by: Yi Min Zhao <zyimin@linux.ibm.com>
Reviewed-by: Boris Fiuczynski <fiuczy@linux.ibm.com>
Reviewed-by: Stefan Zimmermann <stzi@linux.ibm.com>
Reviewed-by: Bjoern Walk <bwalk@linux.ibm.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Commit 901d2b9c introduced virCgroupGetMemoryStat and replaced
the LXC virLXCCgroupGetMemStat logic in commit e634c7cd0. However,
in doing so the replacement wasn't exact as the LXC logic used
getline() to process the cgroup controller data, while the new
virCgroupGetMemoryStat used "memory.stat" manual buffer read/
processing which neglected to forward through @line in order
to read each line in the output.
To fix that, we should be sure to carry forward the @line value
for each line read updating it beyond that current @newLine value
once we've calculated the values that we want.
Signed-off-by: Peter Chubb <peter.chubb@data61.csiro.au>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
This reverts commit ccc72d5cbd.
Based on upstream comment to a follow-up patch, this didn't take the
right approach and the right thing to do is revert and rework.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Missed during review and surprisingly my run through Coverity also
didn't see this. I only noticed it when reading the code while fixing
the build breaker for commit 36780a86a.
With all those continues we would leak @stats.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Add interfaces monitor group to support operations such
as GetID, SetID, Remove, SetAlloc, etc.
Implement the internal virResctrlMonitorGetStats to fetch all
the statistical data and the virResctrlMonitorGetCacheOccupancy
in order to fetch the cache specific "llc_occupancy" value.
Signed-off-by: Wang Huaqiang <huaqiang.wang@intel.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Refactor virResctrlAllocSetID generating an error if an attempt
is made to overwrite the existing value.
Signed-off-by: Wang Huaqiang <huaqiang.wang@intel.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Add interface for creating the resource monitoring group according
to '@virResctrlMonitor->path'.
Signed-off-by: Wang Huaqiang <huaqiang.wang@intel.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
The code for creating resctrl allocation group could be reused
for monitoring group, refactor it for reuse in the later patch.
Signed-off-by: Wang Huaqiang <huaqiang.wang@intel.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
The code of adding PID to the allocation could be reused, refactor it
for later reuse.
Signed-off-by: Wang Huaqiang <huaqiang.wang@intel.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Add interface for resctrl monitor to determine the path.
Signed-off-by: Wang Huaqiang <huaqiang.wang@intel.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
The code for determining resctrl allocation path could be reused
for monitor. Refactor it for reuse.
Signed-off-by: Wang Huaqiang <huaqiang.wang@intel.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Cache Monitoring Technology (aka CMT) provides the capability
to report cache utilization information of system task.
This patch introduces the concept of resctrl monitor through
data structure virResctrlMonitor.
Signed-off-by: Wang Huaqiang <huaqiang.wang@intel.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Refactor schemas and virresctrl to support optional <cache> element
in <cachetune>.
Later, the monitor entry will be introduced and to be placed
under <cachetune>. Either cache entry or monitor entry is
an optional element of <cachetune>.
An cachetune has no <cache> element is taking the default resource
allocating policy defined in '/sys/fs/resctrl/schemata'.
Signed-off-by: Wang Huaqiang <huaqiang.wang@intel.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
When no server name is provided in the URI, modern versions of libxml2
will set the port to '-1'. This is a change from behaviour with earlier
versions which set it to 0.
Libvirt expects the port to be 0 in these cases and as a result we get a
bug when connecting to URIs which lack a server name:
$ virsh -c test+ssh:///default list
error: failed to connect to the hypervisor
error: Cannot recv data: Bad port '-1': Connection reset by peer
This libxml2 change was attempting to fix another bug identified by
libvirt where it didn't roundtrip URIs correctly in:
beb7281055
Essentially libxml2 was not expecting apps to look at the URI port
field when the server name is not provided. This was a reasonable
assumption, but none the less libvirt did look at it :-)
The fix is to ensure we explicitly set port to 0 when server name
is not present, avoiding undefined behaviour for the port field in
libxml2.
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
https://bugzilla.redhat.com/show_bug.cgi?id=1631606
Changes made to manage and utilize a secondary connection
driver to APIs outside the scope of the primary connection
driver have resulted in some confusion processing polkit rules
since the simple "access denied" error message doesn't provide
enough of a clue when combined with the "authentication failed:
access denied by policy" as to which connection driver refused
or failed the ACL check.
In order to provide some context, let's modify the existing
"access denied" error returne from the various vir*EnsureACL
API's to provide the connection driver name that is causing
the failure. This should provide the context for writing the
polkit rules that would allow access via the driver.
Signed-off-by: John Ferlan <jferlan@redhat.com>
ACKed-by: Michal Privoznik <mprivozn@redhat.com>
Adjusting domain format documentation, adding device address
support and adding command line generation for vfio-ap.
Since only one mediated hostdev with model vfio-ap is supported a check
disallows to define domains with more than one such hostdev device.
Signed-off-by: Boris Fiuczynski <fiuczy@linux.ibm.com>
Reviewed-by: Bjoern Walk <bwalk@linux.ibm.com>
Reviewed-by: Chris Venteicher <cventeic@redhat.com>
https://bugzilla.redhat.com/show_bug.cgi?id=1640465
Weirdly enough, there can be symlinks in the path we are trying
to fix. If it is the case our clever algorithm that finds matches
against mount table won't work. Canonicalize path at the
beginning then.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
The virFileInData() function should return to the caller if the
current position the passed file is in is a data section or a
hole (and also how long the current section is). At any rate,
upon return from this function (be it successful or not) the
original position in the file is restored. This may mess up with
errno which might have been set earlier. Save the errno into a
local variable so it can be restored for the caller's sake.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Martin Kletzander <mkletzan@redhat.com>
The URI parser used by libvirt does not populate uri->path if the
trailing slash is missing. The code virStorageSourceParseBackingURI
would then not populate src->path.
As only NBD network disks are allowed to have the 'name' field in the
XML defining the disk source omitted we'd generate an invalid XML which
we'd not parse again.
Fix it by populating src->path with an empty string if the uri is
lacking slash.
As pointed out above NBD is special in this case since we actually allow
it being NULL. The URI path is used as export name. Since an empty
export does not make sense the new approach clears the src->path if the
trailing slash is present but nothing else.
Add test cases now to cover all the various cases for NBD and non-NBD
uris as there was to time only 1 test abusing the quirk witout slash for
NBD and all other URIs contained the slash or in case of NBD also the
export name.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
The name is misleading. Change it to 'uristr' so that 'path' can be
reused in the proper context later.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
There are couple of things wrong with the current implementation.
The first one is that in the first loop the code tries to build a
list of fuse.glusterfs mount points. Well, since the strings are
allocated in a temporary buffer and are not duplicated this
results in wrong decision made later in the code.
The second problem is that the code does not take into account
subtree mounts. For instance, if there's a fuse.gluster mounted
at /some/path and another FS mounted at /some/path/subdir the
code would not recognize this subdir mount.
Reported-by: Han Han <hhan@redhat.com>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Jiri Denemark <jdenemar@redhat.com>
If the given path is already a mount point (e.g. a bind mount of
a file, or simply a direct mount point of a FS), then our code
fails to detect that because the first thing it does is cutting
off part after last slash '/'.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Jiri Denemark <jdenemar@redhat.com>
On s390x the struct member f_type of statsfs is hard coded to 'unsigned
int'. Change virFileIsSharedFixFUSE() to take a 'long long int' and use
a temporary to avoid pointer-casting.
This fixes the following error:
../../src/util/virfile.c:3578:38: error: cast increases required alignment of target type [-Werror=cast-align]
virFileIsSharedFixFUSE(path, (long *) &sb.f_type);
Signed-off-by: Marc Hartmayer <mhartmay@linux.ibm.com>
Signed-off-by: Bjoern Walk <bwalk@linux.ibm.com>
virFileReadValueUint does not log errors for non-existient files,
it merely returns -2.
Commit 12093f1 introduced this.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
This enables to use both cgroup v1 and v2 at the same time together
with libvirt. It is supported by kernel and there is valid use-case,
not all controllers are implemented in cgroup v2 so there might be
configurations where administrator would enable these missing
controllers in cgroup v1.
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
In order to set CPU cfs period using cgroup v2 'cpu.max' interface
we need to load the current value of CPU cfs quota first because
format of 'cpu.max' interface is '$quota $period' and in order to
change 'period' we need to write 'quota' as well. Writing only one
number changes only 'quota'.
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
In cgroups v2 we need to handle threads and processes differently.
If you need to move a process you need to write its pid into
cgrou.procs file and it will move the process with all its threads
as well. The whole process will be moved if you use tid of any thread.
In order to move only threads at first we need to create threaded group
and after that we can write the relevant thread tids into cgroup.threads
file. Threads can be moved only into cgroups that are children of
cgroup of its process.
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
When creating cgroup hierarchy we need to enable controllers in the
parent cgroup in order to be usable. That means writing "+{controller}"
into cgroup.subtree_control file. We can enable only controllers that
are enabled for parent cgroup, that means we need to do that for the
whole cgroup tree.
Cgroups for threads needs to be handled differently in cgroup v2. There
are two types of controllers:
- domain controllers: these cannot be enabled for threads
- threaded controllers: these can be enabled for threads
In addition there are multiple types of cgroups:
- domain: normal cgroup
- domain threaded: a domain cgroup that serves as root for threaded
cgroups
- domain invalid: invalid cgroup, can be changed into threaded, this
is the default state if you create subgroup inside
domain threaded group or threaded group
- threaded: threaded cgroup which can have domain threaded or
threaded as parent group
In order to create threaded cgroup it's sufficient to write "threaded"
into cgroup.type file, it will automatically make parent cgroup
"domain threaded" if it was only "domain". In case the parent cgroup
is already "domain threaded" or "threaded" it will modify only the type
of current cgroup. After that we can enable threaded controllers.
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
Cgroup v2 has only single mount point for all controllers. The list
of controllers is stored in cgroup.controllers file, name of controllers
are separated by space.
In cgroup v2 there is no cpuacct controller, the cpu.stat file always
exists with usage stats.
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
If the placement was copied from parent or set to absolute path
there is nothing to do, otherwise set the placement based on
process placement from /proc/self/cgroup or /proc/{pid}/cgroup.
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
When reconnecting to a domain we are validating the cgroup name.
In case of cgroup v2 we need to validate only the new format for host
without systemd '{machinename}.libvirt-{drivername}' or scope name
generated by systemd.
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
We cannot detect only mount points to figure out whether cgroup v2
is available because systemd uses cgroup v2 for process tracking and
all controllers are mounted as cgroup v1 controllers.
To make sure that this is no the situation we need to check
'cgroup.controllers' file if it's not empty to make sure that cgroup
v2 is not mounted only for process tracking.
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
Place cgroup v2 backend type before cgroup v1 to make it obvious
that cgroup v2 is preferred implementation.
Following patches will introduce support for hybrid configuration
which will allow us to use both at the same time, but we should
prefer cgroup v2 regardless.
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
https://bugzilla.redhat.com/show_bug.cgi?id=1632711
GlusterFS is typically safe when it comes to migration. It's a
network FS after all. However, it can be mounted via FUSE driver
they provide. If that is the case we fail to identify it and
think migration is not safe and require VIR_MIGRATE_UNSAFE flag.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Jiri Denemark <jdenemar@redhat.com>
Commit 87a8a30d6 added the function based on the virsh function,
but used an unsigned long long instead of a double and thus that
limits the maximum result.
Signed-off-by: John Ferlan <jferlan@redhat.com>
ACKed-by: Michal Privoznik <mprivozn@redhat.com>
This reverts commit 1602aa28f8.
There is no need to call virCgroupRemove() nor virCgroupFree() if
virCgroupEnableMissingControllers() fails because it will not modify
'group' at all.
The cleanup of directories is done in virCgroupMakeGroup().
Reviewed-by: John Ferlan <jferlan@redhat.com>
Reviewed-by: Fabiano Fidêncio <fidencio@redhat.com>
Reviewed-by: Marc Hartmayer <mhartmay@linux.ibm.com>
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
Cgroups are linux specific and we need to make sure that the code is
compiled only on linux. On different OSes it fails the compilation:
../../src/util/vircgroupv1.c:65:19: error: variable has incomplete type 'struct mntent'
struct mntent entry;
^
../../src/util/vircgroupv1.c:65:12: note: forward declaration of 'struct mntent'
struct mntent entry;
^
../../src/util/vircgroupv1.c:74:12: error: implicit declaration of function 'getmntent_r' is invalid in C99 [-Werror,-Wimplicit-function-declaration]
while (getmntent_r(mounts, &entry, buf, sizeof(buf)) != NULL) {
^
../../src/util/vircgroupv1.c:814:39: error: use of undeclared identifier 'MS_NOSUID'
if (mount("tmpfs", root, "tmpfs", MS_NOSUID|MS_NODEV|MS_NOEXEC, opts) < 0) {
^
../../src/util/vircgroupv1.c:814:49: error: use of undeclared identifier 'MS_NODEV'
if (mount("tmpfs", root, "tmpfs", MS_NOSUID|MS_NODEV|MS_NOEXEC, opts) < 0) {
^
../../src/util/vircgroupv1.c:814:58: error: use of undeclared identifier 'MS_NOEXEC'
if (mount("tmpfs", root, "tmpfs", MS_NOSUID|MS_NODEV|MS_NOEXEC, opts) < 0) {
^
../../src/util/vircgroupv1.c:841:65: error: use of undeclared identifier 'MS_BIND'
if (mount(src, group->legacy[i].mountPoint, "none", MS_BIND,
^
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
All the system headers are used only if we are compiling on linux
and they all are present otherwise we would have seen build errors
because in our tests/vircgrouptest.c we use only __linux__ to check
whether to skip the cgroup tests or not.
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
tests/vircgrouptest.c uses #ifdef __linux__ for a long time and no
failure was reported so far so it's safe to assume that __linux__ is
good enough to guard cgroup code.
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
Use the mnemonic macros of libdbus for 1 (TRUE) and 0 (FALSE).
Signed-off-by: Marc Hartmayer <mhartmay@linux.ibm.com>
Reviewed-by: Bjoern Walk <bwalk@linux.ibm.com>
Reviewed-by: Boris Fiuczynski <fiuczy@linux.ibm.com>
Reviewed-by: Stefan Zimmermann <stzi@linux.ibm.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Report a debug message if dbus_watch_handle() returns FALSE.
dbus_watch_handle() returns FALSE if there wasn't enough memory for
reading or writing.
Signed-off-by: Marc Hartmayer <mhartmay@linux.ibm.com>
Reviewed-by: Bjoern Walk <bwalk@linux.ibm.com>
Reviewed-by: Boris Fiuczynski <fiuczy@linux.ibm.com>
Reviewed-by: Stefan Zimmermann <stzi@linux.ibm.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
As documented at
https://dbus.freedesktop.org/doc/api/html/group__DBusConnection.html#ga2522ac5075dfe0a1535471f6e045e1ee
the creator of a non-shared D-Bus connection has to release the last
reference after closing for freeing.
Signed-off-by: Marc Hartmayer <mhartmay@linux.ibm.com>
Reviewed-by: Bjoern Walk <bwalk@linux.ibm.com>
Reviewed-by: Boris Fiuczynski <fiuczy@linux.ibm.com>
Reviewed-by: Stefan Zimmermann <stzi@linux.ibm.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Grab a ref for info->bus (a DBus connection) as long as the while loop
is running. With the grabbed reference it is ensured that info->bus
isn't freed as long as the while loop is executed. This is necessary
as it's allowed to drop the last ref for the bus connection in a
handler.
There was already a bug of this kind in libdbus itself:
https://bugs.freedesktop.org/show_bug.cgi?id=15635.
Signed-off-by: Marc Hartmayer <mhartmay@linux.ibm.com>
Reviewed-by: Boris Fiuczynski <fiuczy@linux.ibm.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
With the introduction of cgroup v2 there are new names used with
cgroups based on which version is used:
- legacy: cgroup v1
- unified: cgroup v2
- hybrid: cgroup v1 and cgroup v2
Let's use 'legacy' instead of 'cgroupv1' or 'controllers' in our code.
Reviewed-by: Fabiano Fidêncio <fidencio@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
They all need virCgroupV1GetMemoryUnlimitedKB() so it's easier to
move them in one commit.
Reviewed-by: Fabiano Fidêncio <fidencio@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
We need to update one test-case because now new cgroup object will be
created only if there is any cgroup backend available.
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
We will need to extract current cgroup v1 implementation into separate
backend because there will be new cgroup v2 implementation and both will
have to co-exist.
Reviewed-by: Fabiano Fidêncio <fidencio@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
This will be required once cgroup v2 is introduced. The cgroup
detection is not simple and we will have multiple backends so we
should not just jump into the middle of the detection code.
In order to use virCgroupNewSelf we need to create all the remaining
data files:
- {name}.cgroups represents /proc/cgroups, it is a list of cgroup
controllers compiled into kernel
- {name}.self.cgroup represents /proc/self/cgroup, it describes
cgroups to which the process belongs
For "no-cgroups" we need to modify the expected behavior because
virCgroupNewSelf() will fail if there are no controllers available.
Reviewed-by: Fabiano Fidêncio <fidencio@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
Because we can set which files to return for cgroup tests there
is no need to have special function tailored to run tests.
Reviewed-by: Fabiano Fidêncio <fidencio@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
Once we introduce cgroup v2 support we need to handle processes and
threads differently.
Reviewed-by: Fabiano Fidêncio <fidencio@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
Use flags in virCgroupAddTaskInternal instead of boolean parameter.
Following patch will add new flag to indicate thread instead of process.
Reviewed-by: Fabiano Fidêncio <fidencio@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
In cgroup v2 we need to handle processes and threads differently,
following patch will introduce virCgroupAddThread.
Reviewed-by: Fabiano Fidêncio <fidencio@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
If we are on host with systemd we need to build cgroup hierarchy
ourselves for controllers that are not managed by systemd.
As a starting parent we need to force root group because
virCgroupMakeGroup() takes that parent in order to inherit values
for cpuset controller.
By default cpuset controller is managed by systemd so we will never
hit the issue but for v2 cgroups we need to use parent cgroup every
time.
Reviewed-by: Fabiano Fidêncio <fidencio@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
If virCgroupEnableMissingControllers() fails it could have already
created some directories, we should clean it up as well.
Reviewed-by: Fabiano Fidêncio <fidencio@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
There seems to be no need to add the ignore_value wrapper or
caste with (void) to the unlink() calls, so let's just remove
them. I assume at one point in time Coverity complained. So,
let's just be consistent - those that care to check the return
status can and those that don't can just have the naked unlink.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
This patch is introducing cache monitor(CMT) to cache and
memory bandwidth monitor(MBM) for monitoring CPU memory
bandwidth.
The host capability of the two monitors is also introduced
in this patch.
For CMT, the host capability is shown like:
<host>
...
<cache>
<bank id='0' level='3' type='both' size='15' unit='MiB' cpus='0-5'>
<control granularity='768' min='1536' unit='KiB' type='both' maxAllocs='4'/>
</bank>
<monitor level='3' 'reuseThreshold'='270336' maxMonitors='176'>
<feature name='llc_occupancy'/>
</monitor>
</cache>
...
</host>
For MBM, the capability is shown like this:
<host>
...
<memory_bandwidth>
<node id='1' cpus='6-11'>
<control granularity='10' min ='10' maxAllocs='4'/>
</node>
<monitor maxMonitors='176'>
<feature name='mbm_total_bytes'/>
<feature name='mbm_local_bytes'/>
</monitor>
</memory_bandwidth>
...
</host>
Signed-off-by: Wang Huaqiang <huaqiang.wang@intel.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
This patch introduces the resource monitor and creates the interface
for getting host capability of resource monitor from the system resource
control file system.
The resource monitor takes the role of RDT monitoring group and could be
used to monitor the resource consumption information, such as the last
level cache occupancy and the utilization of memory bandwidth.
Signed-off-by: Wang Huaqiang <huaqiang.wang@intel.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
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>
It doesn't really make sense for us to have stdlib.h and string.h but
not stdio.h in the internal.h header.
Signed-off-by: Erik Skultety <eskultet@redhat.com>
Acked-by: Michal Privoznik <mprivozn@redhat.com>
So far the virLockSpaceAcquireResource() locks the first byte in
the underlying file. But caller might want to lock other range.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Functions that deal with virPCIDeviceAddress exclusively
belong to util/virpci.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Fabiano Fidêncio <fidencio@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
commit b00c9c39 removed the label end_of_netlink_messages and 'return
table' statement, It causes the function virArpTableGet doesn't return
a proper virArpTable pointer.
How to reproduce:
# virsh domiflist sles12sp3
Interface Type Source Model MAC
-------------------------------------------------------
vnet0 network default virtio 52:54:00💿02:e6
# virsh domifaddr sles12sp3 --source arp
error: Failed to query for interfaces addresses
error: An error occurred, but the cause is unknown
It seems that the "if (nh->nlmsg_type == NLMSG_DONE)" statement won't be
meted. So this patch adds 'return table' when the iterations of nlmsghdr
for loop is over.
Signed-off-by: Lin Ma <lma@suse.com>
Reviewed-by: Chen Hanxiao <chenhanxiao@gmail.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Instead of duplicating the code from virGet{User,Group}IDByName(), which are
static anyway, extend those functions to accept NULL pointers for the result and
a boolean for controlling the error reporting.
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
This patch simplifies virNetDevBridgeCreate and virNetDevMacVLanCreate
functions by making use of the virNetlinkNewLink helper.
Signed-off-by: Shi Lei <shi_lei@massclouds.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
This patch adds wrapper macros around nla_nest_[start|end] and nla_put,
thus getting rid of some redundancy and making virNetlinkNewLink more
readable.
Signed-off-by: Shi Lei <shi_lei@massclouds.com>
Signed-off-by: Erik Skultety <eskultet@redhat.com>
This patch introduces virNetlinkNewLink helper which wraps the common
libnl/netlink code to create a new link.
Signed-off-by: Shi Lei <shi_lei@massclouds.com>
Signed-off-by: Erik Skultety <eskultet@redhat.com>
nlmsg_append from the libnl library provides exactly the same
functionality, so we should rely on that instead. This also allows us to
drop the aforementioned function completely.
Signed-off-by: Shi Lei <shi_lei@massclouds.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
@resp is allocated by virNetlinkCommand and the caller is responsible
for freeing the buffer. Since we already converted this module to use
VIR_AUTO{FREE,PTR} macros, let's resolve the problem by using them.
Signed-off-by: Shi Lei <shi_lei@massclouds.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
There's a single user for it which takes an existing
virPCIDeviceAddress, passes its various bits to the
function which in turn constructs a virPCIDevice and
then copies the string representation for the caller
to use: we can use virPCIDeviceAddressAsString()
instead and avoid creating the virPCIDevice in the
first place. Since the function ends up having no
users after the change, we can just drop it.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Martin Kletzander <mkletzan@redhat.com>
The struct is called virPCIDeviceAddress and the
functions operating on it should be named accordingly.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Martin Kletzander <mkletzan@redhat.com>
Add a new modifier letter for virJSONValueObjectAddVArgs which will add
a boolean value with our tristate semantics. The value is omitted when
the _ABSENT value is used.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
A generic "failed to parse xml document" message without telling us
which XML file failed is quite unhelpful.
Reviewed-by: Jiri Denemark <jdenemar@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
This fixes virCgroupEnableMissingControllers where virCgroupRemove
was not called in case virCgroupMakeGroup failed.
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
The case where we need path of any controller is only for internal use
so move it out to a different function.
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
The 'mntDir' is part of 'struct mntent' as a result of getmntent_r
therefore we should not mangle with it.
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
Fixes:
https://www.redhat.com/archives/libvir-list/2017-January/msg00978.html
QEMU is probed through monitor fd to check capabilities during libvirtd init.
The monitor fd is closed after probing by virQEMUCapsInitQMPCommandFree
that calls virQEMUCapsInitQMPCommandAbort that calls qemuMonitorClose,
the latter one notifies the event loop via an interrupt handle in
qemuMonitorUnregister and after then closes monitor fd.
There could be a case when interrupt is sent after eventLoop is unlocked
but before virEventPollRunOnce blocks in poll, shortly before file
descriptor is closed by qemuMonitorClose. Then poll receives closed monitor
fd in fdset and returns EBADF.
EBADF is not mentioned as a valid errno on macOS poll man-page but such
behaviour can appear release-to-release, according to cpython:
https://github.com/python/cpython/blob/master/Modules/selectmodule.c#L1161
The change also fixes the issue in qemucapabilitiestest. It returns
Bad file descriptor message 25 times without the fix.
Signed-off-by: Roman Bolshakov <r.bolshakov@yadro.com>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
In cases where virProcessKillPainfully already reailizes that
SIGTERM wasn't enough we are partially on a bad path already.
Maybe the system is overloaded or having serious trouble to free and
reap resources in time.
In those case give the SIGKILL that was sent after 10 seconds some more
time to take effect if force was set (only then we are falling back to
SIGKILL anyway).
Signed-off-by: Christian Ehrhardt <christian.ehrhardt@canonical.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
It was found that in cases with host devices virProcessKillPainfully
might be able to send signal zero to the target PID for quite a while
with the process already being gone from /proc/<PID>.
That is due to cleanup and reset of devices which might include a
secondary bus reset that on top of the actions taken has a 1s delay
to let the bus settle. Due to that guests with plenty of Host devices
could easily exceed the default timeouts.
To solve that, this adds an extra delay of 2s per hostdev that is associated
to a VM.
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Christian Ehrhardt <christian.ehrhardt@canonical.com>
Rather than forcing the caller to generate an error, let's
generate the Username or Password error message failure if
the auth->cb fails. This is the last error path that needs
a specific message for various callers.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Reviewed-by: Marcos Paulo de Souza <marcos.souza.org@gmail.com>
If we never find the valid credtype in the list, then we'd return
NULL without an error signaled forcing the caller to generate one
that will probably be incorrect. Let's be specific.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Reviewed-by: Marcos Paulo de Souza <marcos.souza.org@gmail.com>
Now that the virAuthGet*Path helpers make the checks, we can remove
them from here.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Reviewed-by: Marcos Paulo de Souza <marcos.souza.org@gmail.com>
Before trying to call @auth->cb, let's ensure it exists.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Reviewed-by: Marcos Paulo de Souza <marcos.souza.org@gmail.com>
Before trying to dereference @auth, let's ensure it's valid.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Reviewed-by: Marcos Paulo de Souza <marcos.souza.org@gmail.com>
Instead of adding the same check for every drivers, execute the checks
in virAuthGetUsername and virAuthGetPassword. These funtions are called
when user is not set in the URI.
Signed-off-by: Marcos Paulo de Souza <marcos.souza.org@gmail.com>
Currently iohelper's error log is recorded in virFileWrapperFdClose.
However, if something goes wrong the caller might not even get to
calling virFileWrapperFdClose and call virFileWrapperFdFree
directly. Therefore the error reporting should happen there.
Signed-off-by: xinhua.Cao <caoxinhua@huawei.com>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
While in most cases the values are going to be much
smaller than our arbitrary 4096 limit, there is really
no guarantee that would be the case: in fact, a few
aarch64 servers have been spotted in the wild with
core_id as high as 6216.
Take advantage of virBitmap's ability to automatically
alter its size at runtime to accomodate such values.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
We already have a function which parses
thread_siblings_list for a CPU and returns the
corresponding bitmap, and a bunch of utility functions
that perform operations on bitmaps such as counting
the number of set bits: use those to implement the
function instead of having an additional ad-hoc parser
for thread_siblings.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
