* configure.ac: Remove redundant checks.

81 patches to gnulib, picks up several new syntax checks.

* .gnulib: Update to latest.
* .x-sc_prohibit_always_true_header_tests: New file.
* bootstrap.conf (gnulib_modules): Add sched.
* src/util/processinfo.c (includes): <sched.h> is now guaranteed.
* src/network/bridge_driver.c (includes): Drop useless
<strings.h>.
* src/openvz/openvz_conf.c (includes): Likewise.
* src/openvz/openvz_driver.c (includes): Likewise.
* src/phyp/phyp_driver.c (includes): Likewise.
* src/qemu/qemu_driver.c (includes): Likewise.
* src/uml/uml_driver.c (includes): Likewise.

* configure.ac (AC_CHECK_FUNCS_ONCE, AC_SYS_LARGEFILE): Rely on
gnulib for strtok_r and large file support.
(AC_OBJEXT): Drop call now done by AC_PROG_CC.
(m4_foreach_w): Drop macro guaranteed by gnulib.
(AC_C_CONST): Drop call declared obsolete by autoconf.
Signed-off-by: NEric Blake <eblake@redhat.com>

* configure.ac: Drop sys/wait.h check.
* src/libvirt.c (includes): Use header unconditionally.
* src/remote/remote_driver.c (includes): Likewise.
* src/storage/storage_backend.c (includes): Likewise.
* src/util/ebtables.c (includes): Likewise.
* src/util/hooks.c (includes): Likewise.
* src/util/iptables.c (includes): Likewise.
* src/util/util.c (includes): Likewise.

* bootstrap.conf (gnulib_modules): Add uname.
* configure.ac: Drop uname and sys/utsname.h checks.
* src/nodeinfo.c (nodeGetInfo): Use uname unconditionally.

Gnulib can guarantee that pthread.h exists, but for now, it is a dummy
header with no support for most pthread_* functions.  Modify our
use of pthread to use function checks, rather than header checks,
to determine how much pthread support is present.

* bootstrap.conf (gnulib_modules): Add pthread.
* configure.ac: Drop all pthread.h checks.  Optimize function
checks.  Add check for pthread functions.
* src/Makefile.am (libvirt_lxc_LDADD): Ensure proper link.
* src/remote/remote_driver.c (remoteIOEventLoop): Depend on
pthread_sigmask, now that gnulib guarantees pthread.h.
* src/util/util.c (virFork): Likewise.
* src/util/threads.c (threads-pthread.c): Depend on
pthread_mutexattr_init, as a witness of full pthread support.
* src/util/threads.h (threads-pthread.h): Likewise.

* src/qemu/qemu_monitor.c (qemuMonitorIOWriteWithFD): Work around
recent clang shortcoming in analysis.

Add ebtables,iptables & iptables-ipv6 dependency to rpm.

Changes from V1 to V2:
  -passing --without-libpcap to configure script, if libpcap is not to be used

Detected by clang.  POSIX requires that the second argument to
va_start be the name of the last variable; and in some implementations,
passing *path instead of path would dereference bogus memory instead
of pulling arguments off the stack.

* src/util/util.c (virBuildPathInternal): Use correct argument to
va_start.

Support for live migration between hosts that do not share storage was
added to qemu-kvm release 0.12.1.
It supports two flags:
-b migration without shared storage with full disk copy
-i migration without shared storage with incremental copy (same base image
shared between source and destination).

I tested the live migration without shared storage (both flags) for native
and p2p with and without tunnelling.  I also verified that the fix doesn't
affect normal migration with shared storage.

When cross-compiling on Linux, configure will misdetect the target as
Linux because it uses uname instead of relying on the $host variable.
This results in including libvirt_linux.syms into libvirt.syms and
therefore trying to export undefined symbols.

Replace uname checks with $host checks to fix this.

Wipe generated interface target only when reading configuration of
inactive domains.

This includes various things:
 - fix the Requires: libvirt-client to use %{name} to allow easy
   renaming
 - when building ESX support one need libcurl-devel
 - remove Makefile[.in] from xml/nwfilter in the docs, as this breaks
   parallel install ation of i686 and x86_64 packages
 - don't include nwfilter config files if not building with the daemon
all relatively trivial which is why I packed them together
* libvirt.spec.in: fix various small bugs

* docs/hacking.html.in: Use the "curly braces" section from coreutils'
HACKING, adapting for libvirt's different formatting style.
* HACKING: Sync from the above, still mostly manually.

Report VIR_ERR_OPERATION_INVALID when operation which requires running
domain is called on inactive domain and vice versa.

Consistently use virDomainFindByUUID instead of virDomainFindByID and
virDomainFindByName and report VIR_ERR_NO_DOMAIN when domain cannot be
found.

Add an empty body for virCondWaitUntil and move virPipeReadUntilEOF
out of the '#ifndef WIN32' block, because it compiles fine with MinGW
in combination with gnulib.

Necessary on cygwin, where uid_t and gid_t are 4-byte long rather
than int, causing gcc -Wformat warnings.

* src/util/util.c (virFileOperationNoFork, virDirCreateNoFork)
(virFileOperation, virDirCreate, virGetUserEnt): Cast uid_t and
gid_t before passing to printf.
* .gitignore: Ignore Windows executables.

When a filter is updated, only those interfaces must have their old
rules cleared that either reference the filter directly or indirectly
through another filter. Remember between the different steps of the
instantiation of the filters which interfaces must be skipped. I am
using a hash map to remember the names of the interfaces and store a
bogus pointer to ~0 into it that need not be freed.

For the decision on whether to instantiate the rules, the check for a
pending IP address learn request is not sufficient since then only the
thread could instantiate the rules. So, a boolean needs to be passed
when the thread instantiates the filter rules late and the IP address
learn request is still pending in order to override the check for the
pending learn request. If the rules are to be updated while the thread
is active, this will not be done immediately but the thread will do that
later on.

WIN32 is always defined when __MINGW32__ is defined, but the
converse is not true.  WIN32 is more generic, if someone were
to ever attempt porting to a microsoft compiler.  This does
not affect Cygwin, which intentionally does not define WIN32.

* src/qemu/qemu_driver.c (qemuDomainGetBlockInfo): Use more
generic flag macro.
* src/storage/storage_backend.c
(virStorageBackendUpdateVolTargetInfoFD)
(virStorageBackendRunProgRegex): Likewise.
* tools/console.h (vshRunConsole): Likewise.

* src/util/cgroup.c: free temporal path string before breaking loop

* src/util/dnsmasq.c (dnsmasqReload): Mingw lacks kill, but is not
running a dnsmasq daemon either.

In commit 98fb83ce I changed the
version script handling. But it seems that I didn't test this properly
and broke it. The .def file is passed to the compiler directly, but it
should get passed to the linker instead.

Set VERSION_SCRIPT_FLAGS to -Wl, to pass the .def file correctly to
the linker.

This fixes the undefined symbol errors while linking virsh.

Also do some indentation clean up.

This applies a fix to thos functions similar to that made to cmdEdit
in 27089506, thus fnixing a memory
leak - if tmp is unlinked and NULLed early in the function, the memory
used by tmp is never freed. Since we will always unlink tmp prior to
freeing its memory at the end of the function, just remove the earlier
code and let cleanup: do the cleanup.

[Error message]
error: Failed to start domain lxc_test1
error: internal error Failed to create veth device pair: 512

The reason of the failure is that lxc driver unexpectedly re-uses
an auto-assigned veth name and tries to create the created veth
again. The failure will happen when a domain has multiple network
interfaces and the names of those are not specified in XML.

The patch fixes the problem by resetting buffers of veth names
in every iteration of creating veth.

* src/lxc/lxc_driver.c: prevent re-using auto-assigned veth name
  Reported by Kumar L Srikanth-B22348.

Without this patch and with a clean environment, ./autobuild.sh
tried to use ./configure --prefix=/, and fails.

* autobuild.sh (AUTOBUILD_INSTALL_ROOT): Provide sensible
default.  Suggested by Daniel P. Berrange.

* configure.ac docs/news.html.in libvirt.spec.in: updates for release
* po/*.po*: updated localizations and regenerated

<hostdev> address parsing previously attempted to detect the number
base: currently it is hardcoded to base 16, which can break PCI
assignment via virt-manager. Revert to the previous behavior.

* src/conf/domain_conf.c: virDomainDevicePCIAddressParseXML, switch to
  virStrToLong_ui(bus, NULL, 0, ...) to autodetect base

This introduces a new event type

   VIR_DOMAIN_EVENT_ID_IO_ERROR_REASON

This event is the same as the previous VIR_DOMAIN_ID_IO_ERROR
event, but also includes a string describing the cause of
the event.

Thus there is a new callback definition for this event type

typedef void (*virConnectDomainEventIOErrorReasonCallback)(virConnectPtr conn,
                                                           virDomainPtr dom,
                                                           const char *srcPath,
                                                           const char *devAlias,
                                                           int action,
                                                           const char *reason,
                                                           void *opaque);

This is currently wired up to the QEMU block IO error events

* daemon/remote.c: Dispatch IO error events to client
* examples/domain-events/events-c/event-test.c: Watch for
  IO error events
* include/libvirt/libvirt.h.in: Define new IO error event ID
  and callback signature
* src/conf/domain_event.c, src/conf/domain_event.h,
  src/libvirt_private.syms: Extend API to handle IO error events
* src/qemu/qemu_driver.c: Connect to the QEMU monitor event
  for block IO errors and emit a libvirt IO error event
* src/remote/remote_driver.c: Receive and dispatch IO error
  events to application
* src/remote/remote_protocol.x: Wire protocol definition for
  IO error events
* src/qemu/qemu_monitor.c, src/qemu/qemu_monitor.h,
  src/qemu/qemu_monitor_json.c: Watch for BLOCK_IO_ERROR event
  from QEMU monitor

Prevent updating and tearing down of filter while the IP
address learning thread is running and has its own filtering
rules applied.

Introduce a function to notify the IP address learning
thread to terminate and thus release the lock on the interface.
Notify the thread before grabbing the lock on the interface
and tearing down the rules. This prevents a 'virsh destroy' to
tear down the rules that the IP address learning thread has
applied.

The functions invoked by the IP address learning thread
that apply some basic filtering rules did not clean up
any previous filtering rules that may still be there
(due to a libvirt restart for example). With the
patch below all the rules are cleaned up first.

Also, I am introducing a function to drop all traffic
in case the IP address learning thread could not apply
the rules.

* src/util/util.c: as it's used for checking things like .iso suffixes

The local DHCP server on virtbr0 sends DHCP ACK messages when a VM is
started and requests an IP address while the initial DHCP lease on the
VM's MAC address hasn't expired. So, also pick the IP address of the VM
if that type of message is seen.
Thanks to Gerhard Stenzel for providing a test case for this.

Changes from V1 to V2:
- cleanup: replacing DHCP option numbers through constants

Ubuntu's gntls package generates an Issuer line that looks like this:
        Issuer: C=US,ST=NY,L=Rochester,O=example.com,CN=example.com CA,EMAIL=hostmaster@example.com

While Red Hat's looks like this
Issuer: CN=Red Hat Emerging Technologies

Note the leading whitespace, and the additional fields in the former.

This patch updates the regular expression to:
 * trim leading characters before "Issuer:"
 * trim anything between Issuer: and CN=
 * trim anything after the next ,

I've tested this against the certool output of both RH and Ubuntu
generated certs.
Signed-off-by: NDustin Kirkland <kirkland@canonical.com>
Signed-off-by: NEric Blake <eblake@redhat.com>

* src/qemu/qemu_driver.c (qemudDomainSaveFlag): Remove dead store to "rc".