While the check is appropriate for eg. the x86 and generic drivers,
there are some valid ppc64 guest configurations where the CPU
model is supposed to be NULL.

Moving this check from the generic code to the drivers makes it
possible to accomodate both use cases.

Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1251927

Not all combinations of host CPU models and compatibility modes
are valid, so we need to make sure we don't try to do something
that QEMU will reject.

Moreover, we need to apply a different logic to guests using
host-model and host-passthrough modes when testing them for host
compatibility.

Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1251927

If a guest CPU is defined using

  <cpu mode='host-model'/>

the <model> sub-element will contain the compatibility mode to use.
That means we can't just copy the host CPU model on cpuUpdate(),
otherwise we'll overwrite that information and migration of such
guests will fail.

Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1251927

Commit a2c5d16a switched to generating
libvirt_admin.syms, but forgot to add the generated file into
.gitignore, hence causing tree pollution post-build.
Signed-off-by: NMartin Kletzander <mkletzan@redhat.com>

Since iothreadid = 0 is invalid, we need to check for it when attempting
to add a disk; otherwise, someone would think/believe their attempt to
add an IOThread to the disk would succeed. Luckily other code ignored
things when ->iothread == 0...

We're using the %.html.tmp for all html files now so drop the unused one
and rather make sure the needed directory exists.

This fixes build failures as described in

    https://www.redhat.com/archives/libvir-list/2015-August/msg00603.html

Since we're linking this into libvirtd we need some symbols to be public
but not part of the public API so mark them as
LIBVIRT_ADMIN_PRIVATE_<VERSION> as we do with libvirt.

Making all other symbols local makes sure we don't accidentally leak
unwanted ones.

This makes it consistent with the other FLAGS in this file and reduced
clutter in the diff when adding new entries.

Commit 89c509a0 added getters for cgroup block device I/O throttling,
however stub versions of these functions have not matching function
prototypes that result in compilation fail on platforms not supporting
cgroup.

Fix build by correcting prototypes of the stubbed functions.

Pushing under build-breaker rule.

Signed-off-by: NCao jin <caoj.fnst@cn.fujitsu.com>
Signed-off-by: NJán Tomko <jtomko@redhat.com>

Fix inconsistency between function description and actual
parameter name.
Signed-off-by: NCao jin <caoj.fnst@cn.fujitsu.com>

Signed-off-by: NMartin Kletzander <mkletzan@redhat.com>

The problem here is that there are some values that kernel accepts, but
does not set them, for example 18446744073709551615 which acts the same
way as zero.  Let's do the same thing we do with other tuning options
and re-read them right after they are set in order to keep our internal
structures up-to-date.

Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1165580Signed-off-by: NMartin Kletzander <mkletzan@redhat.com>

The problem here is that there are some values that kernel accepts, but
does not set them, for example 18446744073709551615 which acts the same
way as zero.  Let's do the same thing we do with other tuning options
and re-read them right after they are set in order to keep our internal
structures up-to-date.
Signed-off-by: NMartin Kletzander <mkletzan@redhat.com>

Since now they were not needed, but I sense they will be in a short
while.
Signed-off-by: NMartin Kletzander <mkletzan@redhat.com>

This function translates device paths to "major:minor " string, and all
virCgroupSetBlkioDevice* functions are modified to use it.  It's a
cleanup with no functional change.
Signed-off-by: NMartin Kletzander <mkletzan@redhat.com>

That function takes string list and returns first string in that list
that starts with the @prefix parameter with that prefix being skipped as
the caller knows what it starts with (also for easier manipulation in
future).
Signed-off-by: NMartin Kletzander <mkletzan@redhat.com>

Well, yet again one case of 'goto cleanup' while 'goto endjob'
was needed. Sorry.
Signed-off-by: NMichal Privoznik <mprivozn@redhat.com>

https://bugzilla.redhat.com/show_bug.cgi?id=1251886

Since iothread_id == 0 is an invalid value for QEMU let's point
that out specifically.  For the IOThreadDel code, the failure would
have ended up being a failure to find the IOThread ID; however, for
the IOThreadAdd code - an IOThread 0 was added and that isn't good.

It seems during many reviews/edits to the code the check for
iothread_id = 0 being invalid was lost - it could have originally
been in the API code, but requested to be moved - I cannot remember.

The comment for the function indicated that iothread_id had to be
a positive non-zero value; however, that wasn't checked - that is
a value of 0 is/was allowed by the API and was left up to the
hypervisor to reject the value.

More than likely this nuance was missed during the many "adjustments"
to the API in the review phase.

Allow 0 as an iothread_id and force the hypervisor to handle.
The qemuDomainPinIOThread API will look up the iothread_id of
0 and not find it and message that anyway.

Just like in commit 704cf06a, if virCgroup*() fails, the error is
already reported. There's no need to overwrite the error with a
generic one and possibly hiding the true root cause of the error.
Signed-off-by: NLuyao Huang <lhuang@redhat.com>

Fix inconsistency between function description and actual
parameter name in virConfGetValue/virConfSetValue.
Signed-off-by: NCao jin <caoj.fnst@cn.fujitsu.com>

When looking up a domain, we try to look up by ID, UUID and NAME
consequently while not really caring which of those lookups succeeds.
The problem is that if any of them fails, we dispatch the error from the
driver and that means setting both threadlocal and global error. Let's
say the last lookup (by NAME) succeeds and resets the threadlocal error as any
other API does, however leaving the global error unchanged. If the underlying
virsh command does not succeed afterwards, our cleanup routine in
vshCommandRun ensures that no libvirt error will be forgotten and that's
exactly where this global error comes in incorrectly.

 # virsh domif-setlink 123 vnet1 up
 error: interface (target: vnet1) not found
 error: Domain not found: no domain with matching id 123

This patch also resets the global error which would otherwise cause some
minor confusion in reported error messages.

https://bugzilla.redhat.com/show_bug.cgi?id=1254152Signed-off-by: NLuyao Huang <lhuang@redhat.com>
Signed-off-by: NErik Skultety <eskultet@redhat.com>

Ever since commit e44b0269, 64-bit mingw compilation fails with:

../../src/util/virprocess.c: In function 'virProcessGetPids':
../../src/util/virprocess.c:628:50: error: passing argument 4 of 'virStrToLong_i' from incompatible pointer type [-Werror=incompatible-pointer-types]
         if (virStrToLong_i(ent->d_name, NULL, 10, &tmp_pid) < 0)
                                                  ^
In file included from ../../src/util/virprocess.c:59:0:
../../src/util/virstring.h:53:5: note: expected 'int *' but argument is of type 'pid_t * {aka long long int *}'
 int virStrToLong_i(char const *s,
     ^
cc1: all warnings being treated as errors

Although mingw won't be using this function, it does compile the
file, and the fix is relatively simple.

* src/util/virprocess.c (virProcessGetPids): Don't assume pid_t
fits in int.
Signed-off-by: NEric Blake <eblake@redhat.com>

It may happen that user (mistakenly) wants to rename a domain to
itself. Which is no renaming at all. We should reject that with
some meaningful error message.
Signed-off-by: NMichal Privoznik <mprivozn@redhat.com>

If this function fails, the error message is reported only in
some cases (e.g. OOM), but in some it's not (e.g. duplicate key).
This fact is painful and we should either not report error at all
or report the error in all possible cases. I vote for the latter.
Unfortunately, since the key may be an arbitrary value (not
necessarily a string) we can't report it in the error message.
Signed-off-by: NMichal Privoznik <mprivozn@redhat.com>

In 9190f0b0 we've tried to fix an OOM. And boy, was that fix
successful. But back then, the hash table implementation worked
strictly over string keys, which is not the case anymore. Hash
table have this function keyCopy() which returns void *.
Therefore a local variable that is temporarily holding the
intermediate return value from that function should be void *
too.
Signed-off-by: NMichal Privoznik <mprivozn@redhat.com>

This function will change the guest name, we shouldn't
allow the readonly user do this.
Signed-off-by: NLuyao Huang <lhuang@redhat.com>

Signed-off-by: NLuyao Huang <lhuang@redhat.com>

Coverity complained that 'vm' wasn't initialized before jumping to
cleanup: and calling virDomainObjEndAPI if the VIR_STRDUP fails.
So I initialized vm = NULL and also moved the VIR_STRDUP closer to
usage and used endjob for goto. Lots of other reasons for failures.

That causes shadowing errors on older compilers.
Signed-off-by: NMartin Kletzander <mkletzan@redhat.com>

This patch removes the static keyword from the vshReadline which was
introduced in commit 834c5720. With
readline the vshReadline function is not static but when compiling
without readline it was defined as static which caused compilation
error.

In order to share as much virsh' logic as possible with upcomming
virt-admin client we need to split virsh logic into virsh specific and
client generic features.

Since majority of virsh methods should be generic enough to be used by
other clients, it's much easier to rename virsh specific data to virshX
than doing this vice versa. It moved generic virsh commands (including info
and opts structures) to generic module vsh.c.

Besides renaming methods and structures, this patch also involves introduction
of a client specific control structure being referenced as private data in the
original control structure, introduction of a new global vsh Initializer,
which currently doesn't do much, but there is a potential for added
functionality in the future.
Lastly it introduced client hooks which are especially necessary during
client connecting phase.

Currently supports only renaming inactive domains without snapshots.
Signed-off-by: NTomas Meszaros <exo@tty.sk>
Signed-off-by: NMichal Privoznik <mprivozn@redhat.com>

This should be emitted whenever a domain is renamed.
Signed-off-by: NTomas Meszaros <exo@tty.sk>

We just need to update the entry in the second hash table. Since commit 8728a565
we have two hash tables for the domain list so that we can do O(1) lookup
regardless of looking up by UUID or name. Since with renaming a domain UUID does
not change, we only need to update the second hash table, where domains are
referenced by their name.

We will call both functions from the qemuDomainRename().
Signed-off-by: NTomas Meszaros <exo@tty.sk>

This patch implements new virsh command, domrename.

Using domrename, it will be possible to rename domain from the virsh shell by
calling virRenameDomain API.

It takes two arguments, current domain name and new domain name.

Example:

virsh # list --all
 Id    Name                           State
 ----------------------------------------------------
  -     bar                            shut off

virsh # domrename bar foo
Domain successfully renamed

virsh # list --all
 Id    Name                           State
 ----------------------------------------------------
  -     foo                            shut off

virsh #
Signed-off-by: NTomas Meszaros <exo@tty.sk>

Also, among with this new API new ACL that restricts rename
capability is invented too.
Signed-off-by: NTomas Meszaros <exo@tty.sk>
Signed-off-by: NMichal Privoznik <mprivozn@redhat.com>

RedHat and Debian based distros use different locations

Reference: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=790935