Commit Graph

384 Commits

Author SHA1 Message Date
Andrea Bolognani
6c0d0210cb src: Make virStr*cpy*() functions return an int
Currently, the functions return a pointer to the
destination buffer on success or NULL on failure.

Not only does this kind of error handling look quite
alien in the context of libvirt, where most functions
return zero on success and a negative int on failure,
but it's also somewhat pointless because unless there's
been a failure the returned pointer will be the same
one passed in by the user, thus offering no additional
value.

Change the functions so that they return an int
instead.

Signed-off-by: Andrea Bolognani <abologna@redhat.com>
2018-07-23 14:27:30 +02:00
John Ferlan
b04629b629 conf: Clean up object referencing for Add and Remove
When adding a new object to the domain object list, there should
have been 2 virObjectRef calls made one for each list into which
the object was placed to match the 2 virObjectUnref calls that
would occur during Remove as part of virHashRemoveEntry when
virObjectFreeHashData is called when the element is removed from
the hash table as set up in virDomainObjListNew.

Some drivers (libxl, lxc, qemu, and vz) handled this inconsistency
by calling virObjectRef upon successful return from virDomainObjListAdd
in order to use virDomainObjEndAPI when done with the returned @vm.
While others (bhyve, openvz, test, and vmware) handled this via only
calling virObjectUnlock upon successful return from virDomainObjListAdd.

This patch will "unify" the approach to use virDomainObjEndAPI
for any @vm successfully returned from virDomainObjListAdd.

Because list removal is so tightly coupled with list addition,
this patch fixes the list removal algorithm to return the object
as entered - "locked and reffed".  This way, the callers can then
decide how to uniformly handle add/remove success and failure.
This removes the onus on the caller to "specially handle" the
@vm during removal processing.

The Add/Remove logic allows for some logic simplification such
as in libxl where we can Remove the @vm directly rather than
needing to set a @remove_dom boolean and removing after the
libxlDomainObjEndJob completes as the @vm is locked/reffed.

Signed-off-by: John Ferlan <jferlan@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
2018-05-03 19:09:03 -04:00
John Ferlan
da613819e9 Check return status for virUUIDGenerate
Although legal, a few paths were not checking a return value < 0
for failure instead they checked a non zero failure.

Clean them all up to be consistent.

Signed-off-by: John Ferlan <jferlan@redhat.com>
2018-04-24 08:52:59 -04:00
John Ferlan
868136624f conf: Rework/rename virDomainObjListFindByIDRef
Rework the code such that virDomainObjListFindByID will always
return a locked/ref counted object so that the callers can
always do the same cleanup logic to call virDomainObjEndAPI.
Makes accessing the objects much more consistent.

NB:
There were 2 callers (lxcDomainLookupByID and qemuDomainLookupByID)
that were already using the ByID name, but not virDomainObjEndAPI -
these were changed as well in this update/patch.

Signed-off-by: John Ferlan <jferlan@redhat.com>
Reviewed-by: Jim Fehlig <jfehlig@suse.com>
2018-04-23 06:41:45 -04:00
John Ferlan
fd9ef3b31e conf: Rework/rename virDomainObjListFindByUUIDRef
Now that every caller is using virDomainObjListFindByUUIDRef,
let's just remove it and keep the name as virDomainObjListFindByUUID.

Signed-off-by: John Ferlan <jferlan@redhat.com>
Reviewed-by: Jim Fehlig <jfehlig@suse.com>
2018-04-23 06:41:45 -04:00
Clementine Hayat
7987780779 openvz: start using virDomainObjCheckActive
Signed-off-by: Clementine Hayat <clem@lse.epita.fr>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Ján Tomko <jtomko@redhat.com>
2018-04-18 10:22:07 +02:00
John Ferlan
ee11ba29f5 openvz: Clean up openvzDomainGetHostname
Remove the unnecessary goto error followed by goto cleanup
processing.

Signed-off-by: John Ferlan <jferlan@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2018-04-16 08:45:43 -04:00
John Ferlan
369e5a828f openvz: Remove unnecessary Unref in openvzLoadDomains
Since there is no way to get to cleanup without dom being NULL,
this is a unnecessary Unref.

Signed-off-by: John Ferlan <jferlan@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2018-04-16 08:45:18 -04:00
Daniel P. Berrangé
65a372d6e0 driver: ensure URI path is non-NULL to simplify drivers
Avoid the need for the drivers to explicitly check for a NULL path by
making sure it is at least the empty string.

Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
2018-04-12 16:52:02 +01:00
Daniel P. Berrangé
4c8574c85c driver: ensure NULL URI isn't passed to drivers with whitelisted URIs
Ensuring that we don't call the virDrvConnectOpen method with a NULL URI
means that the drivers can drop various checks for NULL URIs. These were
not needed anymore since the probe functionality was split

Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
2018-04-12 16:52:02 +01:00
Daniel P. Berrangé
8e4f9a2773 driver: declare supported URI schemes in virConnectDriver struct
Declare what URI schemes a driver supports in its virConnectDriver
struct. This allows us to skip trying to open the driver entirely
if the URI scheme doesn't match.

Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
2018-04-12 16:52:02 +01:00
Daniel P. Berrangé
3714cc952d driver: allow drivers to indicate if they permit remote connections
Add a localOnly flag to the virConnectDriver struct which allows a
driver to indicate whether it is local-only, or permits remote
connections. Stateful drivers running inside libvirtd are generally
local only. This allows us to remote the check for uri->server != NULL
from most drivers.

Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
2018-04-12 16:52:02 +01:00
Daniel P. Berrangé
20ad55a8fd driver: introduce a driver method for probing default URIs
Currently the virDrvConnectOpen method is supposed to handle both
opening an explicit URI and auto-probing a driver if no URI is
given. Introduce a dedicated virDrvConnectURIProbe method to enable the
probing functionality to be split from the driver opening functionality.

It is still possible for NULL to be passed to the virDrvConnectOpen
method after this change, because the remote driver needs special
handling to enable probing of the URI against a remote libvirtd daemon.

Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
2018-04-12 16:52:02 +01:00
John Ferlan
9b4fe4c151 openvz: Use virDomainObjListFindBy{UUID|ID}Ref
For openvzDomObjFromDomainLocked and openvzDomainLookupByID
let's return a locked and referenced @vm object so that callers
can then use the common and more consistent virDomainObjEndAPI
in order to handle cleanup rather than needing to know that the
returned object is locked and calling virObjectUnlock.

The LookupByName already returns the ref counted and locked object,
so this will make things more consistent.

Signed-off-by: John Ferlan <jferlan@redhat.com>
Reviewed-by: Jim Fehlig <jfehlig@suse.com>
2018-04-11 11:54:01 -04:00
John Ferlan
b7eb4b93c3 openvz: Add more descriptive error message on Find failure
If openvzDomainLookupByID or openvzDomainLookupByName fails
to find a vm, let's be a bit more descriptive by providing
the failing id or name in the error message.

Signed-off-by: John Ferlan <jferlan@redhat.com>
Reviewed-by: Jim Fehlig <jfehlig@suse.com>
2018-04-11 11:54:00 -04:00
John Ferlan
e5d682c0b4 openvz: Create accessors to virDomainObjListFindByUUID
Rather than repeat code throughout, create and use a couple of
accessors in order to lookup by UUID.

Signed-off-by: John Ferlan <jferlan@redhat.com>
Reviewed-by: Jim Fehlig <jfehlig@suse.com>
2018-04-11 11:53:57 -04:00
John Ferlan
5bb07527c1 openvz: Cleanup indention
Some of the indents were only 2 spaces, make consistent w/ 4 spaces.
Also some indents didn't align properly. Fix them all up.

Signed-off-by: John Ferlan <jferlan@redhat.com>
Reviewed-by: Marc Hartmayer <mhartmay@linux.vnet.ibm.com>
2018-03-26 11:20:04 -04:00
Marc Hartmayer
d1c89c9b2d driver: Add typedef for the anonymous enum used for driver features
Add typedef for the anonymous enum used for the driver features. This
allows the usage of the type in a switch statement and taking
advantage of the compilers feature to detect uncovered cases.

Signed-off-by: Marc Hartmayer <mhartmay@linux.vnet.ibm.com>
Reviewed-by: Boris Fiuczynski <fiuczy@linux.vnet.ibm.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
2018-03-15 17:12:28 -04:00
Ján Tomko
d3b8a81ae6 openvz: pass sizeof to snprintf
The size argument accounts for the nul-byte to terminate
the string. Use sizeof and remove the pointless assignment.

Signed-off-by: Ján Tomko <jtomko@redhat.com>
2018-03-08 16:45:54 +01:00
Daniel P. Berrangé
1158bf0db1 make: split openvz driver build rules into openvz/Makefile.inc.am
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
2018-02-23 13:14:26 +00:00
Andrea Bolognani
3e7db8d3e8 Remove backslash alignment attempts
Right-aligning backslashes when defining macros or using complex
commands in Makefiles looks cute, but as soon as any changes is
required to the code you end up with either distractingly broken
alignment or unnecessarily big diffs where most of the changes
are just pushing all backslashes a few characters to one side.

Generated using

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

Signed-off-by: Andrea Bolognani <abologna@redhat.com>
2017-11-03 13:24:12 +01:00
Michal Privoznik
be9978bb89 virDomainInterfaceStats: Accept MAC addresses properly
https://bugzilla.redhat.com/show_bug.cgi?id=1497396

In 0d3d020ba6 I've added capability to accept MAC addresses
for the API too. However, the implementation was faulty. It needs
to lookup the corresponding interface in the domain definition
and pass the ifname instead of MAC address.

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
2017-10-13 17:54:50 -07:00
Michal Privoznik
0d3d020ba6 virDomainInterfaceStats: Accept MAC address too
https://bugzilla.redhat.com/show_bug.cgi?id=1497396

The other APIs accept both, ifname and MAC address. There's no
reason virDomainInterfaceStats can't do the same.

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
2017-10-13 13:46:59 -07:00
Michal Privoznik
e3909729d2 virDomainNetFind: Report error if no device found
Every caller reports the error themselves. Might as well move it
into the function and thus unify it.

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
2017-10-13 13:46:36 -07:00
Michal Privoznik
d86fd2402e virNetDevTapInterfaceStats: Allow caller to not swap the statistics
https://bugzilla.redhat.com/show_bug.cgi?id=1497410

The comment in virNetDevTapInterfaceStats() implementation for
Linux states that packets transmitted by domain are received by
the host and vice versa. Well, this is true but not for all types
of interfaces. For instance, for macvtaps when TAP device is
hooked right onto a physical device any packet that domain sends
looks also like a packet sent to the host. Therefore, we should
allow caller to chose if the stats returned should be straight
copy or swapped.

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
2017-10-05 09:16:05 +02:00
Michal Privoznik
c2c47b586f src: Use virDomainNetFindByName
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
2017-10-05 09:16:05 +02:00
Jiri Denemark
25af7e950a conf: Add save cookie callbacks to xmlopt
virDomainXMLOption gains driver specific callbacks for parsing and
formatting save cookies.

Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
2017-06-07 13:36:01 +02:00
Michal Privoznik
4f0aeed871 virDomainXMLOption: Introduce virDomainABIStabilityDomain
While checking for ABI stability, drivers might pose additional
checks that are not valid for general case. For instance, qemu
driver might check some memory backing attributes because of how
qemu works. But those attributes may work well in other drivers.

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
2017-06-05 09:08:52 +02:00
Martin Kletzander
72e04d2800 Init host cache info in drivers
Added only in drivers that were already calling
virCapabilitiesInitNUMA().  Instead of refactoring all the callers to
behave the same way in case of error, just follow what the callers are
doing for all the functions.

Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
2017-05-09 13:12:40 +02:00
Michal Privoznik
5683b21309 virGetDomain: Set domain ID too
So far our code is full of the following pattern:

  dom = virGetDomain(conn, name, uuid)
  if (dom)
      dom->id = 42;

There is no reasong why it couldn't be just:

  dom = virGetDomain(conn, name, uuid, id);

After all, client domain representation consists of tuple (name,
uuid, id).

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
2017-04-03 08:35:57 +02:00
Martin Kletzander
26ae4e482a Remove src/nodeinfo
There is no "node driver" as there was before, drivers have to do
their own ACL checking anyway, so they all specify their functions and
nodeinfo is basically just extending conf/capablities.  Hence moving
the code to src/conf/ is the right way to go.

Also that way we can de-duplicate some code that is in virsysfs and/or
virhostcpu that got duplicated during the virhostcpu.c split.  And
Some cleanup is done throughout the changes, like adding the vir*
prefix etc.

Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
2017-03-27 13:13:29 +02:00
Martin Kletzander
9fff1fa334 openvz: Ditch openvzGetNodeCPUs
There is particular function for this, there is no need to build whole
nodeinfo for it.

Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
2017-03-27 13:13:29 +02:00
Mehdi Abaakouk
e0d893e86d Move virstat.c code to virnetdevtap.c
This is just a code move of virstat.c to virnetdevtap.c
2016-12-09 10:28:07 +01:00
Mehdi Abaakouk
9b6de7c506 virstat: fix signature of virstat helper
In preparation to the code move to virnetdevtap.c, this change:

* renames virNetInterfaceStats to virNetDevTapInterfaceStats
* changes 'path' to 'ifname', to use the same vocable as other
  method in virnetdevtap.c.
* Add the attributes checker
2016-12-09 10:27:56 +01:00
Michal Privoznik
c2a5a4e7ea virstring: Unify string list function names
We have couple of functions that operate over NULL terminated
lits of strings. However, our naming sucks:

virStringJoin
virStringFreeList
virStringFreeListCount
virStringArrayHasString
virStringGetFirstWithPrefix

We can do better:

virStringListJoin
virStringListFree
virStringListFreeCount
virStringListHasString
virStringListGetFirstWithPrefix

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
2016-11-25 13:54:05 +01:00
Sławek Kapłoński
6c98ac2c62 Forbid new-line char in name of new domain
New line character in name of domain is now forbidden because it
mess virsh output and can be confusing for users.
Validation of name is done in drivers, after parsing XML to avoid
problems with dissappeared domains which was already created with
new-line char in name.

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
2016-11-22 14:35:14 +01:00
Michal Privoznik
78ab5dcea0 conf: Extend virDomainDeviceDefPostParse for parseOpaque
Just like virDomainDefPostParseCallback has gained new
parseOpaque argument, we need to follow the logic with
virDomainDeviceDefPostParse.

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
2016-09-26 16:50:12 +02:00
Michal Privoznik
c41b989112 virDomainDefParse{File,String}: Introduce @parseOpaque argument
We want to pass the proper opaque pointer instead of NULL to
virDomainDefParse and subsequently virDomainDefParseNode too.

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
2016-09-26 16:50:12 +02:00
Michal Privoznik
940d91c55b virDomainDefPostParse: Introduce @parseOpaque argument
Some callers might want to pass yet another pointer to opaque
data to post parse callbacks. The driver generic one is not
enough because two threads executing post parse callback might
want to see different data (e.g. domain object pointer that
domain def belongs to).

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
2016-09-26 16:50:12 +02:00
Nitesh Konkar
8fea0ad8e2 Fix various code comment typos
Signed-off-by: Nitesh Konkar <nitkon12@linux.vnet.ibm.com>
2016-09-26 08:06:30 -04:00
Erik Skultety
28e191a96c fs: Fix '<' comparison of value produced by logical not '!'
Commit da665fbd introduced the following condition to virLXCProcessEnsureRootFS
and openvzReadFSConf:

if (!(<some_var> = virDomainFSDefNew()) < 0)

which broke the build on fedora with GCC 5.3.1: "logical not is only applied to
the left hand side of comparison".

Signed-off-by: Erik Skultety <eskultet@redhat.com>
2016-07-19 09:38:40 +02:00
Olga Krishtal
da665fbd48 filesystem: adds possibility to use storage pool as fs source
Signed-off-by: Olga Krishtal <okrishtal@virtuozzo.com>
2016-07-18 23:39:56 +03:00
Peter Krempa
5fe0b6b0a7 conf: Add private data for virDomainVcpuDef
Allow to store driver specific data on a per-vcpu basis.

Move of the virDomainDef*Vcpus* functions was necessary as
virDomainXMLOptionPtr was declared below this block and I didn't want to
split the function headers.
2016-07-11 10:44:04 +02:00
Peter Krempa
3bd161f862 openvz: Remove use of virDomainLiveConfigHelperMethod 2016-07-07 08:57:05 +02:00
Laine Stump
fbc1843d2e conf: use virNetDevIPInfo for guest-side <interface> config
All the same information was already there, just in slightly different
places in the virDomainNetDef.
2016-06-26 19:33:09 -04:00
Laine Stump
9658e70f7d conf/openvz: eliminate incorrect/undocumented use of <source dev='blah'/>
When support for <interface type='ethernet'> was added in commit
9a4b705f back in 2010, it erroneously looked at <source dev='blah'/>
for a user-specified guest-side interface name. This was never
documented though. (that attribute already existed at the time in the
data.ethernet union member of virDomainNetDef, but apparently had no
practical use - it was only used as a storage place for a NetDef's
bridge name during qemuDomainXMLToNative(), but even then that was
never used for anything).

When support for similar guest-side device naming was added to the lxc
driver several years later, it was put in a new subelement <guest
dev='blah'/>.

In the intervening years, since there was no validation that
ethernet.dev was NULL in the other drivers that didn't actually use
it, innocent souls who were adding other features assuming they needed
to account for non-NULL ethernet.dev when really they didn't, so
little bits of the usual pointless cargo-cult code showed up.

This patch not only switches the openvz driver to use the documented
<guest dev='blah'/> notation for naming the guest-side device (just in
case anyone is still using the openvz driver), and logs an error if
anyone tries to set <source dev='blah'/> for a type='ethernet'
interface, it also removes the cargo-cult uses of ethernet.dev and
<source dev='blah'/>, and eliminates if from the RNG and from
virDomainNetDef.

NB: I decided on this course of action after mentioning the
inconsistency here:

  https://www.redhat.com/archives/libvir-list/2016-May/msg02038.html

and getting encouragement do eliminate it in a later IRC discussion
with danpb.
2016-06-26 19:33:08 -04:00
Laine Stump
22a6873a98 global: consistently use IP rather than Ip in identifiers
I'm tired of mistyping this all the time, so let's do it the same all
the time (similar to how we changed all "Pci" to "PCI" awhile back).

(NB: I've left alone some things in the esx and vbox drivers because
I'm unable to compile them and they weren't obviously *not* a part of
some API. I also didn't change a couple of variables named,
e.g. "somethingIptables", because they were derived from the name of
the "iptables" command)
2016-06-26 19:33:07 -04:00
Ján Tomko
9beb299554 openvz: do not open-code STRSKIP
Remove one more use of STREQLEN with strlen as its argument.
2016-06-24 16:30:55 +02:00
Ján Tomko
994b024624 Use virDirOpenQuiet
Remove all the remaining usage of opendir.
2016-06-24 14:20:57 +02:00
Ján Tomko
16d77fc6b5 openvz: split single-line if
Put the 'continue' statement on a separate line.
2016-06-24 10:36:12 +02:00
Ján Tomko
a4e6f1eb9c Introduce VIR_DIR_CLOSE
Introduce a helper that only calls closedir if DIR* is non-NULL
and sets it to NULL afterwards.
2016-06-23 21:58:33 +02:00
Peter Krempa
f8d565bf86 conf: Rename virDomainDefGetMemoryActual to virDomainDefGetMemoryTotal 2016-06-17 10:39:40 +02:00
Daniel P. Berrange
86dd9fac0f nodeinfo: move host memory APIs out into virhostmem file
Move all APIs with a virHostMEM name prefix out into new
util/virhostmem.h & util/virhostmem.c files

Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
2016-06-09 18:43:18 +01:00
Daniel P. Berrange
eaf18f4c2b nodeinfo: move host CPU APIs out into virhostcpu.c file
Move all APIs with a virHostCPU name prefix out into new
util/virhostcpu.h & util/virhostcpu.c files

Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
2016-06-09 18:31:11 +01:00
Daniel P. Berrange
4053350bfe nodeinfo: rename all CPU APIs to have a virHostCPU prefix
In preparation for moving all the CPU related APIs out of
the nodeinfo file, give them a virHostCPU name prefix.

Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
2016-06-09 18:08:15 +01:00
Daniel P. Berrange
dcfe37e682 nodeinfo: rename all memory APIs to have a virHostMem prefix
In preparation for moving all the memory related APIs out of
the nodeinfo file, give them a virHostMem name prefix.

Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
2016-06-09 18:07:00 +01:00
Daniel P. Berrange
08ea852c25 nodeinfo: remove sysfs_prefix from all methods
Nearly all the methods in the nodeinfo file are given a
'const char *sysfs_prefix' parameter to override the
default sysfs path (/sys/devices/system). Every single
caller passes in NULL for this, except one use in the
unit tests. Furthermore this parameter is totally
Linux-specific, when the APIs are intended to be cross
platform portable.

This removes the sysfs_prefix parameter and instead gives
a new method linuxNodeInfoSetSysFSSystemPath for use by
the test suite.

For two of the methods this hardcodes use of the constant
SYSFS_SYSTEM_PATH, since the test suite does not need to
override the path for thos methods.

Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
2016-06-09 18:00:18 +01:00
Daniel P. Berrange
5f1837eaca Pass config file object through to driver open methods
The virConnectOpenInternal method opens the libvirt client
config file and uses it to resolve things like URI aliases.

There may be driver specific things that are useful to
store in the config file too, so rather than have them
re-parse the same file, pass the virConfPtr down to the
drivers.

Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
2016-06-08 13:48:45 +01:00
Peter Krempa
b394af162a conf: Add infrastructure for adding configuration validation
Until now we weren't able to add checks that would reject configuration
once accepted by the parser. This patch adds a new callback and
infrastructure to add such checks. In this patch all the places where
rejecting a now-invalid configuration wouldn't be a good idea are marked
with a new parser flag.
2016-06-07 13:02:20 +02:00
Peter Krempa
998c9e34e6 conf: Rename VIR_DOMAIN_DEF_PARSE_VALIDATE to VIR_DOMAIN_DEF_PARSE_VALIDATE_SCHEMA
Make it obvious that the flag is controlling RNG schema validation.
2016-06-07 13:02:20 +02:00
Cole Robinson
b1fc6a7b73 conf: domain: reject name containing '/'
Trying to define a domain name containing an embedded '/'
will immediately fail when trying to write the XML to disk for
our stateful drivers. This patch explicitly rejects names
containing a '/', and provides an xmlopt feature for drivers
to avoid this validation check, which is enabled in every
non-stateful driver that already has xmlopt handling wired up.

(Technically this could reject a previously accepted vmname like
 '/foo', however at least for the qemu driver that falls over
 later when starting qemu)

https://bugzilla.redhat.com/show_bug.cgi?id=639923
2016-05-02 10:06:04 -04:00
Michal Privoznik
865764de06 Drop paths.h include
We include the file in plenty of places. This is mostly due to
historical reasons. The only place that needs something from the
header file is storage_backend_fs which opens _PATH_MOUNTED. But
it gets the file included indirectly via mntent.h. At no other
place in our code we need _PATH_.*. Drop the include and
configure check then.

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
2016-03-18 09:43:45 +01:00
Peter Krempa
185d13b1b0 conf: refactor checking for unsupported memory devices
Introduce a helper to check supported device and domain config and move
the memory hotplug checks to it.

The advantage of this approach is that by default all new features are
considered unsupported by all hypervisors unless specifically changed
rather than the previous approach where every hypervisor would need to
declare that a given feature is unsupported.
2016-03-09 10:09:16 +01:00
John Ferlan
fe0063685a openvz: Use virStringSplitCount instead of strtok_r
When parsing the barrier:limit values, use virStringSplitCount in order
to split the pair and make the approriate checks to get the data.

Signed-off-by: John Ferlan <jferlan@redhat.com>
2016-02-25 11:52:45 -05:00
Joao Martins
d239a5427f conf: add caps to virDomainDefFormat*
And use the newly added caps->host.netprefix (if it exists) for
interface names that match the autogenerated target names.

Signed-off-by: Joao Martins <joao.m.martins@oracle.com>
2016-02-04 12:38:26 +00:00
Martin Kletzander
93103da84b Provide parse flags to PostParse functions
This way both Domain and Device PostParse functions can act based on the
flags.

Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
2016-01-11 10:54:50 +01:00
Peter Krempa
71c89ac9df conf: Replace read accesses to def->vcpus with accessor 2015-12-09 14:57:12 +01:00
Peter Krempa
957d597330 conf: Replace writes to def->vcpus with accessor 2015-12-09 14:57:12 +01:00
Peter Krempa
d1dda68777 conf: Replace read access to def->maxvcpus with accessor
Finalize the refactor by adding the 'virDomainDefGetVCpusMax' getter and
reusing it accross libvirt.
2015-12-09 14:57:12 +01:00
Peter Krempa
c970c4a5ea conf: Add helper to check whether domain has offline vCPUs
The new helper will simplify checking whether the domain config contains
inactive vCPUs.
2015-12-09 14:57:12 +01:00
Peter Krempa
4e187169f0 conf: Replace writes to def->maxvcpus with accessor
To support further refactors replace all write access to def->maxvcpus
with a accessor function.
2015-12-09 14:57:12 +01:00
Michal Privoznik
90f3c0d717 conf: Split virDomainObjList into a separate file
Our domain_conf.* files are big enough. Not only they contain XML
parsing code, but they served as a storage of all functions whose
name is virDomain prefixed. This is just wrong as it gathers not
related functions (and modules) into one big file which is then
harder to maintain. Split virDomainObjList module into a separate
file called virdomainobjlist.[ch].

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
2015-11-30 13:55:10 +01:00
Peter Krempa
a44da44b1c openvz: Refactor extraction of vcpu count
To simplify further refactors change the way the vcpu count is extracted
to use a temp variable rather than juggling with def->maxvcpus.
2015-11-24 13:16:55 +01:00
Ishmanpreet Kaur Khera
32cee5b2f0 Avoid using !STREQ and !STRNEQ
We have macros for both positive and negative string matching.
Therefore there is no need to use !STREQ or !STRNEQ. At the same
time as we are dropping this, new syntax-check rule is
introduced to make sure we won't introduce it again.

Signed-off-by: Ishmanpreet Kaur Khera <khera.ishman@gmail.com>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
2015-10-21 15:03:35 +02:00
Michal Privoznik
c99b8cec82 virDomainCreateXML: Make domain definition transient
https://bugzilla.redhat.com/show_bug.cgi?id=871452

So, you want to create a domain from XML. The domain already
exists in libvirt's database of domains. It's okay, because name
and UUID matches. However, on domain startup, internal
representation of the domain is overwritten with your XML even
though we claim that the XML you've provided is a transient one.
The bug is to be found across nearly all the drivers.
Le sigh.

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
2015-09-24 10:52:38 +02:00
John Ferlan
c71f0654fc nodeinfo: Add sysfs_prefix to nodeGetMemoryStats
Add the sysfs_prefix argument to the call to allow for setting the
path for tests to something other than SYSFS_SYSTEM_PATH.
2015-07-13 15:59:32 -04:00
John Ferlan
b97b30480d nodeinfo: Add sysfs_prefix to nodeCapsInitNUMA
Add the sysfs_prefix argument to the call to allow for setting the
path for tests to something other than SYSFS_CPU_PATH which is a
derivative of SYSFS_SYSTEM_PATH

Use cpupath for nodeCapsInitNUMAFake and remove SYSFS_CPU_PATH
2015-07-13 15:59:32 -04:00
John Ferlan
29e4f2243f nodeinfo: Add sysfs_prefix to nodeGetInfo
Add the sysfs_prefix argument to the call to allow for setting the
path for tests to something other than SYSFS_SYSTEM_PATH.
2015-07-13 15:59:32 -04:00
John Ferlan
f1c6179f0d nodeinfo: Add sysfs_prefix to nodeGetCPUMap
Add the sysfs_prefix argument to the call to allow for setting the
path for tests to something other than SYSFS_SYSTEM_PATH.
2015-07-13 15:59:32 -04:00
Michal Privoznik
4803c855bb openvz: Drop useless domain lookup
The lookup is just for check whether a domain we are about to add does
not already exists. Well, the virDomainObjListAdd() function does that
for us already so there's no need to duplicate the check.

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
2015-04-27 11:26:37 +02:00
Michal Privoznik
620ff93bd3 virDomainObjListFindByName: Return referenced object
Every domain that grabs a domain object to work over should
reference it to make sure it won't disappear meanwhile.

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
2015-04-24 13:22:45 +02:00
Cole Robinson
835cf84b7e domain: conf: Drop expectedVirtTypes
This needs to specified in way too many places for a simple validation
check. The ostype/arch/virttype validation checks later in
DomainDefParseXML should catch most of the cases that this was covering.
2015-04-20 16:43:43 -04:00
Cole Robinson
4fa6f9b413 caps: Convert to use VIR_DOMAIN_VIRT internally 2015-04-20 16:40:26 -04:00
Cole Robinson
5f7c599456 domain: Convert os.type to VIR_DOMAIN_OSTYPE enum 2015-04-20 16:40:09 -04:00
Cole Robinson
d0440e3269 caps: Switch AddGuest to take VIR_DOMAIN_OSTYPE value
Rather than an opencoded string. This should be a no-op
2015-04-20 16:38:09 -04:00
Ján Tomko
a0482396d7 Remove unused macros
In the order of appearance:

* MAX_LISTEN - never used
  added by 23ad665c (qemud) and addec57 (lock daemon)

* NEXT_FREE_CLASS_ID - never used, added by 07d1b6b

* virLockError - never used, added by eb8268a4

* OPENVZ_MAX_ARG, CMDBUF_LEN, CMDOP_LEN
  unused since the removal of ADD_ARG_LIT in d8b31306

* QEMU_NB_PER_CPU_STAT_PARAM - unused since 897808e

* QEMU_CMD_PROMPT, QEMU_PASSWD_PROMPT - unused since 1dc10a7

* TEST_MODEL_WORDSIZE - unused since c25c18f7

* TEMPDIR - never used, added by 714bef5

* NSIG - workaround around old headers
  added by commit 60ed1d2
  unused since virExec was moved by commit 02e8691

* DO_TEST_PARSE - never used, added by 9afa006

* DIFF_MSEC, GETTIMEOFDAY - unused since eee6eb6
2015-04-02 10:27:56 +02:00
Peter Krempa
3e4230d270 conf: Add interface to parse and format memory device information
This patch adds code that parses and formats configuration for memory
devices.

A simple configuration would be:
<memory model='dimm'>
  <target>
    <size unit='KiB'>524287</size>
    <node>0</node>
  </target>
</memory>

A complete configuration of a memory device:
<memory model='dimm'>
  <source>
    <pagesize unit='KiB'>4096</pagesize>
    <nodemask>1-3</nodemask>
  </source>
  <target>
    <size unit='KiB'>524287</size>
    <node>1</node>
  </target>
</memory>

This patch preemptively forbids use of the <memory> device in individual
drivers so the users are warned right away that the device is not
supported.
2015-03-23 14:25:15 +01:00
Peter Krempa
bffb9163a1 conf: Add support for parsing and formatting max memory and slot count
Add a XML element that will allow to specify maximum supportable memory
and the count of memory slots to use with memory hotplug.

To avoid possible confusion and misuse of the new element this patch
also explicitly forbids the use of the maxMemory setting in individual
drivers's post parse callbacks. This limitation will be lifted when the
support is implemented.
2015-03-23 14:25:14 +01:00
Peter Krempa
4f9907cd11 conf: Replace access to def->mem.max_balloon with accessor functions
As there are two possible approaches to define a domain's memory size -
one used with legacy, non-NUMA VMs configured in the <memory> element
and per-node based approach on NUMA machines - the user needs to make
sure that both are specified correctly in the NUMA case.

To avoid this burden on the user I'd like to replace the NUMA case with
automatic totaling of the memory size. To achieve this I need to replace
direct access to the virDomainMemtune's 'max_balloon' field with
two separate getters depending on the desired size.

The two sizes are needed as:
1) Startup memory size doesn't include memory modules in some
hypervisors.
2) After startup these count as the usable memory size.

Note that the comments for the functions are future aware and document
state that will be present after a few later patches.
2015-03-16 14:26:51 +01:00
Pavel Hrdina
cf521fc8ba memtune: change the way how we store unlimited value
There was a mess in the way how we store unlimited value for memory
limits and how we handled values provided by user.  Internally there
were two possible ways how to store unlimited value: as 0 value or as
VIR_DOMAIN_MEMORY_PARAM_UNLIMITED.  Because we chose to store memory
limits as unsigned long long, we cannot use -1 to represent unlimited.
It's much easier for us to say that everything greater than
VIR_DOMAIN_MEMORY_PARAM_UNLIMITED means unlimited and leave 0 as valid
value despite that it makes no sense to set limit to 0.

Remove unnecessary function virCompareLimitUlong.  The update of test
is to prevent the 0 to be miss-used as unlimited in future.

Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1146539

Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
2015-03-06 11:52:24 +01:00
Peter Krempa
c03411199e conf: Allocate domain definition with the new helper
Use the virDomainDefNew() helper to allocate the definition instead of
doing it via VIR_ALLOC.
2015-02-20 17:43:05 +01:00
Ján Tomko
481881f50a Trivially support DomainHasManagedSaveImage
Return 0 instead of ERR_NO_SUPPORT in each driver
where we don't support managed save or -1 if
the domain does not exist.

This avoids spamming daemon logs when 'virsh dominfo' is run.

https://bugzilla.redhat.com/show_bug.cgi?id=1095637
2015-02-06 12:52:50 +01:00
Daniel P. Berrange
b38da58423 Make tests independant of system page size
Some code paths have special logic depending on the page size
reported by sysconf, which in turn affects the test results.
We must mock this so tests always have a consistent page size.
2015-02-02 20:27:43 +00:00
Daniel P. Berrange
55ea7be7d9 Removing probing of secondary drivers
For stateless, client side drivers, it is never correct to
probe for secondary drivers. It is only ever appropriate to
use the secondary driver that is associated with the
hypervisor in question. As a result the ESX & HyperV drivers
have both been forced to do hacks where they register no-op
drivers for the ones they don't implement.

For stateful, server side drivers, we always just want to
use the same built-in shared driver. The exception is
virtualbox which is really a stateless driver and so wants
to use its own server side secondary drivers. To deal with
this virtualbox has to be built as 3 separate loadable
modules to allow registration to work in the right order.

This can all be simplified by introducing a new struct
recording the precise set of secondary drivers each
hypervisor driver wants

struct _virConnectDriver {
    virHypervisorDriverPtr hypervisorDriver;
    virInterfaceDriverPtr interfaceDriver;
    virNetworkDriverPtr networkDriver;
    virNodeDeviceDriverPtr nodeDeviceDriver;
    virNWFilterDriverPtr nwfilterDriver;
    virSecretDriverPtr secretDriver;
    virStorageDriverPtr storageDriver;
};

Instead of registering the hypervisor driver, we now
just register a virConnectDriver instead. This allows
us to remove all probing of secondary drivers. Once we
have chosen the primary driver, we immediately know the
correct secondary drivers to use.

Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
2015-01-27 12:02:04 +00:00
Daniel P. Berrange
dd69a14f90 Add support for schema validation when passing in XML
The virDomainDefineXMLFlags and virDomainCreateXML APIs both
gain new flags allowing them to be told to validate XML.
This updates all the drivers to turn on validation in the
XML parser when the flags are set
2015-01-15 16:40:27 +00:00
Daniel P. Berrange
0ecd685109 Give virDomainDef parser & formatter their own flags
The virDomainDefParse* and virDomainDefFormat* methods both
accept the VIR_DOMAIN_XML_* flags defined in the public API,
along with a set of other VIR_DOMAIN_XML_INTERNAL_* flags
defined in domain_conf.c.

This is seriously confusing & error prone for a number of
reasons:

 - VIR_DOMAIN_XML_SECURE, VIR_DOMAIN_XML_MIGRATABLE and
   VIR_DOMAIN_XML_UPDATE_CPU are only relevant for the
   formatting operation
 - Some of the VIR_DOMAIN_XML_INTERNAL_* flags only apply
   to parse or to format, but not both.

This patch cleanly separates out the flags. There are two
distint VIR_DOMAIN_DEF_PARSE_* and VIR_DOMAIN_DEF_FORMAT_*
flags that are used by the corresponding methods. The
VIR_DOMAIN_XML_* flags received via public API calls must
be converted to the VIR_DOMAIN_DEF_FORMAT_* flags where
needed.

The various calls to virDomainDefParse which hardcoded the
use of the VIR_DOMAIN_XML_INACTIVE flag change to use the
VIR_DOMAIN_DEF_PARSE_INACTIVE flag.
2015-01-13 16:26:12 +00:00
Daniel P. Berrange
4d2ebc71ce Add stub virDomainDefineXMLFlags impls
Make sure every virt driver implements virDomainDefineXMLFlags
by adding a trivial passthrough from the existing impl with
no flags set.
2015-01-13 10:38:56 +00:00
John Ferlan
a267f01532 openvz: Check errors from virSocketAddrFormat
Commit id 'a4e86390' modified the command line to allow --ipadd multiple
times; however, it did not account for the condition where a NULL is
returned which will could lead to some interesting errors with multiple
--ipadd's without parameters.

Signed-off-by: John Ferlan <jferlan@redhat.com>
2015-01-12 08:59:55 -05:00
John Ferlan
21160a7ac9 openvz: Resolve Coverity RESOURCE_LEAK
Commit id 'a4e86390' modified the command line to allow --ipadd multiple
times, which caused Coverity to notice a latent memory leak with the
'ipAddr' string not being VIR_FREE()'d

Signed-off-by: John Ferlan <jferlan@redhat.com>
2015-01-12 08:59:54 -05:00
Cédric Bosdonnat
a4e8639068 Openvz --ipadd can be provided multiple times
Vzctl man page says that --ipadd can be provided multiple times to add
several IP addresses. Looping over the configured ip addresses to add
one --ipadd for each. This would even handle the multiple IPs handled
by openvz_conf.c
2015-01-05 20:24:17 +01:00