This code has had problems historically.  As originally
written, in commit 6bcf2501 (Jun 08), it could call unlink
on a random string, nuking an unrelated file.

Then commit 182a80b9 (Sep 09), the code was rewritten to
allocate tmp, with both a use-after-free bug and a chance to
call unlink(NULL).

Commit e206946d (Mar 11) fixed the use-after-free, but not the
NULL dereference.  Thanks to clang for catching this!

* src/qemu/qemu_driver.c (qemudDomainMemoryPeek): Don't call
unlink on NULL.

Unlikely to hit in real life, but clang noticed it.

* tests/commandtest.c (checkoutput, test4, test18): Avoid
unlink(NULL) on OOM.

This reverts commit 0e7f7f85.

From the mailing list:

> So, AFAICT, this patch means we will never reconnect to any LXC
> VMs now.
>
> The correct solution, is to refactor LXC driver startup to work
> the same way as the QEMU driver startup.
>
>   - Load all the live state XML files (to pick up running VMs)
>   - Reconnect to all VMs
>   - Load all the persistent config XML files (to pick up any additional
>     inactive guets)

But that solution is invasive enough to be post-0.9.1.

* tests/.valgrind.supp: Consolidate bash suppressions.  Ignore
more libnl issues.

The patch which moved libpciaccess initialization to one place caused
regression - we were not able to run on system with no PCI bus, like
s390(x).

Otherwise if there are inactive lxc domains, lxcStartup will
try to reconnect to sockets of these domains, which results in
errors in libvirtd log.

../../tests/xmconfigtest.c: In function 'testCompareParseXML':
../../tests/xmconfigtest.c:49:19: error: 'conn' may be used uninitialized in this function [-Wuninitialized]

* tests/xmconfigtest.c (testCompareParseXML): Initialize variable.

This commit fixes
qemu/qemu_driver.c: In function 'qemuDomainModifyDeviceFlags':
qemu/qemu_driver.c:4041:8: warning: 'ret' may be used uninitialized in this
function [-Wuninitialized]
qemu/qemu_driver.c:4013:9: note: 'ret' was declared here

The variable is set to -1 so that the error paths are taken when the code
to set it didn't get a chance to run. Without initializing it, we could
return some an undefined value from this function.

While I was at it, I made a trivial whitespace change in the same function
to improve readability.

For IEEE 802.1Qbg, it is necessary to use a VLAN interface.
vepa itself does not require a VLAN interface.

Signed-off-by: Gerhard Stenzel <stenzel at de.ibm.com>

Make virtTestLoadFile allocate the buffer to read the file into.

Fix logic error in virtTestLoadFile, stop reading on the first empty line.

Use virFileReadLimFD in virtTestCaptureProgramOutput to avoid manual
buffer handling.

Commit 36deff04 introduced a regression due to which virsh is not able
to log to a file - msg_buf was changed from an array to a pointer
without corresponding change to usage of "sizeof()".

Fix regression in virsh logging
Signed-off-by: NSupriya Kannery <supriyak@in.ibm.com>

Call shutdown functions for all subcomponents in nwfilterDriverShutdown.

Make sure that this shutdown functions can safely be called multiple times
and independent from the actual subcomponents state.

Commit e0d014f2 made binary potentially allocated on the heap.
It was freed in the parent in the error path, but not in the success path
that doesn't goto the cleanup label.

Found by 'make -C tests valgrind'.

Commit 1671d1dc introduced a memory leak in virHashFree, and
wholesale table corruption in virHashRemoveSet (elements not
requested to be freed are lost).

* src/util/hash.c (virHashFree): Free bucket array.
(virHashRemoveSet): Don't lose elements.
* tests/hashtest.c (testHashCheckForEachCount): New method.
(testHashCheckCount): Expose the bug.

Tried to dredge through old changelogs and commits to come up with it, so
may not be completely accurate.

v2:
Drop ambiguous 'containers'
Use same mail archive for all links

* bootstrap.conf (gnulib_modules): Add getcwd-lgpl.
* tests/commandtest.c (checkoutput): Drop unused cwd.
* tests/commandhelper.c (main): Let getcwd malloc.
* tests/testutils.c (virTestMain): Likewise.
* tools/virsh.c (cmdPwd): Likewise.
(virshCmds): Expose cmdPwd and cmdCd on mingw.

A few of the tests were missing basic sanity checks, while most
of them were doing copy-and-paste initialization (in fact, some
of them pasted the argc > 1 check more than once!).  It's much
nicer to do things in one common place, and minimizes the size of
the next patch that fixes getcwd usage.

* tests/testutils.h (EXIT_AM_HARDFAIL): New define.
(progname, abs_srcdir): Define for all tests.
(VIRT_TEST_MAIN): Change callback signature.
* tests/testutils.c (virtTestMain): Do more common init.
* tests/commandtest.c (mymain): Simplify.
* tests/cputest.c (mymain): Likewise.
* tests/esxutilstest.c (mymain): Likewise.
* tests/eventtest.c (mymain): Likewise.
* tests/hashtest.c (mymain): Likewise.
* tests/networkxml2xmltest.c (mymain): Likewise.
* tests/nodedevxml2xmltest.c (myname): Likewise.
* tests/nodeinfotest.c (mymain): Likewise.
* tests/nwfilterxml2xmltest.c (mymain): Likewise.
* tests/qemuargv2xmltest.c (mymain): Likewise.
* tests/qemuhelptest.c (mymain): Likewise.
* tests/qemuxml2argvtest.c (mymain): Likewise.
* tests/qemuxml2xmltest.c (mymain): Likewise.
* tests/qparamtest.c (mymain): Likewise.
* tests/sexpr2xmltest.c (mymain): Likewise.
* tests/sockettest.c (mymain): Likewise.
* tests/statstest.c (mymain): Likewise.
* tests/storagepoolxml2xmltest.c (mymain): Likewise.
* tests/storagevolxml2xmltest.c (mymain): Likewise.
* tests/virbuftest.c (mymain): Likewise.
* tests/virshtest.c (mymain): Likewise.
* tests/vmx2xmltest.c (mymain): Likewise.
* tests/xencapstest.c (mymain): Likewise.
* tests/xmconfigtest.c (mymain): Likewise.
* tests/xml2sexprtest.c (mymain): Likewise.
* tests/xml2vmxtest.c (mymain): Likewise.

* .gnulib: Update to latest, for getaddrinfo fixes.
Reported by Matthias Bolte.

We don't use gnulib's sanitizations for vfprintf, but vshDebug
was used with %zu, which means that it would fail on mingw.
Thank goodness the compiler indirectly caught this for us :)

virsh.c: In function 'vshDebug':
virsh.c:12105:5: warning: function might be possible candidate for
'ms_printf' format attribute [-Wmissing-format-attribute]

since mingw <stdio.h> hasn't yet added gcc attributes to vfprintf.

* tools/virsh.c (vshDebug): Avoid vfprintf.
(vshPrintExtra): Use lighter-weight fputs.
Reported by Matthias Bolte.

Support update of disks by MODIFY_CONFIG

This patch includes changes for qemu's disk to support
virDomainUpdateDeviceFlags() with VIR_DOMAIN_DEVICE_MODIFY_CONFIG.

This patch adds support for CDROM/foppy disk types.
Signed-off-by: NKAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>

* src/qemu/qemu_driver.c
(qemuDomainUpdateDeviceConfig): support cdrom/floppy.

V2: Use virAsprintf instead of snprintf/strdup

The xend driver will generate a virDomainNetDef ifname if one is not
specified in xend sexpr, even if domain is inactive.  The result is
network interface XML containing 'vif-1.Y' on dev attribute of target
element, e.g.

  <interface type='bridge'>
    <target dev='vif-1.0'/>
    ...

This patch changes the behavior to only generate the ifname if not
specified in xend sexpr *and* domain is not inactive (id != -1).

Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=664059

Reattaching pci device back to host without destroying guest or
detaching device from guest would cause host to crash. This patch adds
a check before doing device reattach. If the device is being assigned
to guest, libvirt refuses to reattach device to host. The patch only
works for Xen, for it just checks xenstore to get pci device
information.
Signed-off-by: NYufang Zhang <yuzhang@redhat.com>

The lone caller to hostsFileWrite (and the callers for at least 3
levels up the return stack) assume that the return value will be < 0
on failure. However, hostsFileWrite returns 0 on success, and a
positive errno on failure. This patch changes hostsFileWrite to return
-errno on failure.

* src/esx/esx_driver.c: Fix spelling of 'relative'.
* src/util/util.c: Likewise.

Currently the build fails if /usr/local/include does not exist since
its use is hardcoded in configure.ac

Check for audit_encode_nv_string in libaudit so that ancient audit
library is ignored rather than trying to compile with libaudit support
and failing.

We support to initialize the hooks at daemon reload if there is no
hooks script is defined, we should also support initialize the hooks
at daemon shutdown if no hooks is defined.

To address bz: https://bugzilla.redhat.com/show_bug.cgi?id=688859

This patch does the following things:
1. The return value of cmdSchedInfoUpdate() can be -1, 0 and 1. So the
   type of return value should be int not bool.(This function is not a
   entry of a virsh command, but the name of this function likes cmdXXX)

2. The type of cmdSchedinfo()'s, cmdFreecell()'s, cmdPoolList()'s and
   cmdVolList()'s return value is bool not int, so change the type of
   variable ret_val, func_ret and functionReturn.

3. Add a variable functionReturn for cmdMigrate(), cmdAttachInterface(),
   cmdDetachInterface(), cmdAttachDisk() and cmdDetachDisk() to save the
   return value.

4. Change the type of variable ret in the function cmdAttachDevice(),
   cmdDetachDevice(), cmdUpdateDevice(), cmdAttachInterface(),
   cmdDetachInterface(), cmdAttachDisk() and cmdDetachDisk() to int, as
   we use it to save the return value of virXXX() and the type of virXXX()'s
   return value is int not bool.

5. Do some cleanup when virBuff.error is 1.

The bug 1-4 were introduced by commit b56fa5bb.

Support changes of disks by MODIFY_CONFIG for qemu.

This patch includes patches for qemu's disk to support
virDomainAt(De)tachDeviceFlags with VIR_DOMAIN_DEVICE_MODIFY_CONFIG.

Other devices can be added incrementally.
Signed-off-by: NKAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>

* /src/conf/domain_conf.c
(virDomainDiskIndexByName): returns array index of disk in vmdef.
(virDomainDiskRemoveByName): removes a disk which has the name in vmdef.
* src/qemu/qemu_driver.c
(qemuDomainAttachDeviceConfig): add support for Disks.
(qemuDomainDetachDeviceConfig): add support for Disks.

This patch adds functions for modify domain's persistent definition.
To do error recovery in easy way, we use a copy of vmdef and update it.

The whole sequence will be:

  make a copy of domain definition.

  if (flags & MODIFY_CONFIG)
      update copied domain definition
  if (flags & MODIF_LIVE)
      do hotplug.
  if (no error)
      save copied one to the file and update cached definition.
  else
      discard copied definition.

This patch is mixuture of Eric Blake's work and mine.
From: Eric Blake <eblake@redhat.com>
Signed-off-by: NKAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>

(virDomainObjCopyPersistentDef): make a copy of persistent vm definition
(qemuDomainAttach/Detach/UpdateDeviceConfig) : callbacks. now empty
(qemuDomainModifyDeviceFlags): add support for MODIFY_CONFIG and MODIFY_CURRENT

Same fix as commit 1fc288e1.

* tests/hashtest.c (testHashRemoveForEach): Use correct format.

So far first entries for each hash key are stored directly in the hash
table while other entries mapped to the same key are linked through
pointers. As a result of that, the code is cluttered with special
handling for the first items.

This patch makes all entries (even the first ones) linked through
pointers, which significantly simplifies the code and makes it more
maintainable.

This adds several tests for remaining hash APIs (custom
hasher/comparator functions are not covered yet, though).

All tests pass both before and after the "Simplify hash implementation".

If one specify "--with-python=yes" but no python-devel package
is installed, we ignore it with just a notice message, which
doesn't give clear guide to user.

Steps to reproduce this bug:
1. # cat net.xml # 00:03.0 has been used
    <interface type='network'>
      <mac address='52:54:00:04:72:f3'/>
      <source network='default'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/>
    </interface>

2. # virsh attach-device vm1 net.xml
   error: Failed to attach device from net.xml
   error: internal error unable to reserve PCI address 0:0:3

3. # virsh attach-device vm1 net.xml
   error: Failed to attach device from net.xml
   error: internal error unable to execute QEMU command 'device_add': Device 'rtl8139' could not be initialized

The reason of this bug is that: we can not reserve PCI address 0:0:3 because it has
been used, but we release PCI address when we reserve it failed.

virsh schedinfo inactive-domain will trigger the problem.

When buf->error is 1, we do not return buf->content in the function
virBufferContentAndReset(). So we should free buf->content when
vsnprintf() failed.

This was broken by the refactoring in ac1e6586. It resulted in a
segfault for 'virsh vol-dumpxml' and related volume functions.

Before the refactoring all users of the ESX_VI__TEMPLATE__DISPATCH
macro dispatched on the item type, as the item is the input to all those
functions.

Commit ac1e6586 made the dynamically dispatched CastFromAnyType
functions use this macro too, but this functions dispatched on the
actual type of the AnyType object. The item is the output of the
CastFromAnyType functions.

This difference was missed in the refactoring, making CastFromAnyType
functions dereferencing the item pointer that is NULL at the time of
the dispatch.