June 2012 - Devel - libvirt List Archives

[libvirt] [PATCH] virsh: let 'connect' without args remember -c option
by Eric Blake 12 Jun '12

12 Jun '12

If a user invokes 'virsh -c $URI', then within that batch shell, they probably want 'connect' to revert to $URI rather than the normal default URI you get for passing in NULL. In particular, I had a setup where qemu:///session was failing, but took 20 seconds to fail; since 'make -C tests check TESTS=virsh-all' exercises the command 'virsh -c test:///default connect' without arguments, it was locking up for 20 seconds trying to connect to qemu, even though the testsuite specifically wants to limit itself to the test:///default URI. * tools/virsh.c (__vshControl): Add member. (main, vshParseArgv): Set it. (vshDeinit): Clean it up. (cmdConnect): Use it to reopen to original connection. --- This doesn't fix the root cause of this problem: https://www.redhat.com/archives/libvir-list/2012-June/msg00237.html but at least it makes my 'make check' runs faster while I still investigate the root problem. tools/virsh.c | 10 +++++++--- 1 file changed, 7 insertions(+), 3 deletions(-) diff --git a/tools/virsh.c b/tools/virsh.c index 0453b95..b28dc49 100644 --- a/tools/virsh.c +++ b/tools/virsh.c @@ -241,6 +241,7 @@ typedef struct __vshCmd { */ typedef struct __vshControl { char *name; /* connection name */ + char *default_name; /* -c or env-var default when name is NULL */ virConnectPtr conn; /* connection to hypervisor (MAY BE NULL) */ vshCmd *cmd; /* the current command */ char *cmdstr; /* string with command */ @@ -856,7 +857,7 @@ cmdConnect(vshControl *ctl, const vshCmd *cmd) vshError(ctl, "%s", _("Please specify valid connection URI")); return false; } - ctl->name = vshStrdup(ctl, name); + ctl->name = vshStrdup(ctl, name ? name : ctl->default_name); ctl->useGetInfo = false; ctl->useSnapshotOld = false; @@ -19922,6 +19923,7 @@ vshDeinit(vshControl *ctl) vshReadlineDeinit(ctl); vshCloseLogFile(ctl); VIR_FREE(ctl->name); + VIR_FREE(ctl->default_name); if (ctl->conn) { int ret; if ((ret = virConnectClose(ctl->conn)) != 0) { @@ -20176,7 +20178,8 @@ vshParseArgv(vshControl *ctl, int argc, char **argv) ctl->timing = true; break; case 'c': - ctl->name = vshStrdup(ctl, optarg); + VIR_FREE(ctl->default_name); + ctl->default_name = vshStrdup(ctl, optarg); break; case 'v': if (STRNEQ_NULLABLE(optarg, "long")) { @@ -20211,6 +20214,7 @@ vshParseArgv(vshControl *ctl, int argc, char **argv) exit(EXIT_FAILURE); } } + ctl->name = vshStrdup(ctl, ctl->default_name); if (argc > optind) { /* parse command */ @@ -20268,7 +20272,7 @@ main(int argc, char **argv) progname++; if ((defaultConn = getenv("VIRSH_DEFAULT_CONNECT_URI"))) { - ctl->name = vshStrdup(ctl, defaultConn); + ctl->default_name = vshStrdup(ctl, defaultConn); } if (!vshParseArgv(ctl, argc, argv)) { -- 1.7.10.2

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[libvirt] [PATCH v3 1/2] virsh: add keepalive protocol in virsh
by Guannan Ren 12 Jun '12

12 Jun '12

Bugzilla:https://bugzilla.redhat.com/show_bug.cgi?id=822839 Add two general virsh options to start keepalive messaging in virsh By default, virsh doesn't start keepalive. Under the explicit request of keepalive with the the following options , virsh will try to start keepalive. The virsh will fail if the keepalive request cannot be honored. error: this function is not supported by the connection driver: virConnectSetKeepAlive error: Failed to connect to the hypervisor -i | --keepalive_interval interval time value -n | --keepalive_count number of keepalive message For non-p2p migration, start keepalive for remote driver to determine the status of network connection, aborting migrating job after defined amount of interval time. --- tools/virsh.c | 110 ++++++++++++++++++++++++++++++++++++++++++++++--------- tools/virsh.pod | 13 ++++++ 2 files changed, 105 insertions(+), 18 deletions(-) diff --git a/tools/virsh.c b/tools/virsh.c index 744b629..33aeb6c 100644 --- a/tools/virsh.c +++ b/tools/virsh.c @@ -251,6 +251,10 @@ typedef struct __vshControl { bool readonly; /* connect readonly (first time only, not * during explicit connect command) */ + unsigned int keepalive_interval; + /* interval time value */ + unsigned int keepalive_count; + /* keepalive_count value */ char *logfile; /* log file name */ int log_fd; /* log file descriptor */ char *historydir; /* readline history directory name */ @@ -415,13 +419,14 @@ typedef struct __vshCtrlData { vshControl *ctl; const vshCmd *cmd; int writefd; + virConnectPtr dconn; } vshCtrlData; typedef void (*jobWatchTimeoutFunc) (vshControl *ctl, virDomainPtr dom, void *opaque); static bool -vshWatchJob(vshControl *ctl, +vshWatchJob(vshCtrlData *data, virDomainPtr dom, bool verbose, int pipe_fd, @@ -628,6 +633,39 @@ vshSetupSignals(void) { } /* + * vshConnectOpen: + * + * A wrapper for virConnectOpenAuth. + */ +static virConnectPtr +vshConnectOpen(const char *name, + bool readonly, + vshControl *ctl) +{ + virConnectPtr conn; + + if (!ctl) + return NULL; + + conn = virConnectOpenAuth(name, + virConnectAuthPtrDefault, + readonly ? VIR_CONNECT_RO : 0); + if (!conn) + return NULL; + + if (ctl->keepalive_interval > 0 && ctl->keepalive_count > 0) + if (virConnectSetKeepAlive(conn, + ctl->keepalive_interval, + ctl->keepalive_count) < 0) { + virshReportError(ctl); + virConnectClose(conn); + return NULL; + } + + return conn; +} + +/* * vshReconnect: * * Reconnect after a disconnect from libvirtd @@ -643,9 +681,8 @@ vshReconnect(vshControl *ctl) virConnectClose(ctl->conn); } - ctl->conn = virConnectOpenAuth(ctl->name, - virConnectAuthPtrDefault, - ctl->readonly ? VIR_CONNECT_RO : 0); + ctl->conn = vshConnectOpen(ctl->name, ctl->readonly, ctl); + if (!ctl->conn) vshError(ctl, "%s", _("Failed to reconnect to the hypervisor")); else if (connected) @@ -862,8 +899,7 @@ cmdConnect(vshControl *ctl, const vshCmd *cmd) ctl->useSnapshotOld = false; ctl->readonly = ro; - ctl->conn = virConnectOpenAuth(ctl->name, virConnectAuthPtrDefault, - ctl->readonly ? VIR_CONNECT_RO : 0); + ctl->conn = vshConnectOpen(ctl->name, ctl->readonly, ctl); if (!ctl->conn) vshError(ctl, "%s", _("Failed to connect to the hypervisor")); @@ -3334,6 +3370,7 @@ cmdSave(vshControl *ctl, const vshCmd *cmd) data.ctl = ctl; data.cmd = cmd; data.writefd = p[1]; + data.dconn = NULL; if (virThreadCreate(&workerThread, true, @@ -3341,7 +3378,7 @@ cmdSave(vshControl *ctl, const vshCmd *cmd) &data) < 0) goto cleanup; - ret = vshWatchJob(ctl, dom, verbose, p[0], 0, NULL, NULL, _("Save")); + ret = vshWatchJob(&data, dom, verbose, p[0], 0, NULL, NULL, _("Save")); virThreadJoin(&workerThread); @@ -3608,6 +3645,7 @@ cmdManagedSave(vshControl *ctl, const vshCmd *cmd) data.ctl = ctl; data.cmd = cmd; data.writefd = p[1]; + data.dconn = NULL; if (virThreadCreate(&workerThread, true, @@ -3615,7 +3653,7 @@ cmdManagedSave(vshControl *ctl, const vshCmd *cmd) &data) < 0) goto cleanup; - ret = vshWatchJob(ctl, dom, verbose, p[0], 0, + ret = vshWatchJob(&data, dom, verbose, p[0], 0, NULL, NULL, _("Managedsave")); virThreadJoin(&workerThread); @@ -4086,6 +4124,7 @@ cmdDump(vshControl *ctl, const vshCmd *cmd) data.ctl = ctl; data.cmd = cmd; data.writefd = p[1]; + data.dconn = NULL; if (virThreadCreate(&workerThread, true, @@ -4093,7 +4132,7 @@ cmdDump(vshControl *ctl, const vshCmd *cmd) &data) < 0) goto cleanup; - ret = vshWatchJob(ctl, dom, verbose, p[0], 0, NULL, NULL, _("Dump")); + ret = vshWatchJob(&data, dom, verbose, p[0], 0, NULL, NULL, _("Dump")); virThreadJoin(&workerThread); @@ -7210,9 +7249,16 @@ doMigrate (void *opaque) virConnectPtr dconn = NULL; virDomainPtr ddom = NULL; - dconn = virConnectOpenAuth (desturi, virConnectAuthPtrDefault, 0); + dconn = vshConnectOpen(desturi, 0, ctl); if (!dconn) goto out; + if (virConnectIsAlive(dconn) <= 0) { + virConnectClose(dconn); + goto out; + } else { + data->dconn = dconn; + } + ddom = virDomainMigrate2(dom, dconn, xml, flags, dname, migrateuri, 0); if (ddom) { virDomainFree(ddom); @@ -7268,7 +7314,7 @@ vshMigrationTimeout(vshControl *ctl, } static bool -vshWatchJob(vshControl *ctl, +vshWatchJob(vshCtrlData *data, virDomainPtr dom, bool verbose, int pipe_fd, @@ -7286,6 +7332,7 @@ vshWatchJob(vshControl *ctl, char retchar; bool functionReturn = false; sigset_t sigmask, oldsigmask; + vshControl *ctl = data->ctl; sigemptyset(&sigmask); sigaddset(&sigmask, SIGINT); @@ -7329,6 +7376,13 @@ repoll: goto cleanup; } + if (data->dconn && virConnectIsAlive(data->dconn) <= 0) { + virDomainAbortJob(dom); + vshError(ctl, "%s", + _("Lost connection to destination host")); + goto cleanup; + } + GETTIMEOFDAY(&curr); if (timeout && (((int)(curr.tv_sec - start.tv_sec) * 1000 + (int)(curr.tv_usec - start.tv_usec) / 1000) > @@ -7402,13 +7456,14 @@ cmdMigrate(vshControl *ctl, const vshCmd *cmd) data.ctl = ctl; data.cmd = cmd; data.writefd = p[1]; + data.dconn = NULL; if (virThreadCreate(&workerThread, true, doMigrate, &data) < 0) goto cleanup; - functionReturn = vshWatchJob(ctl, dom, verbose, p[0], timeout, + functionReturn = vshWatchJob(&data, dom, verbose, p[0], timeout, vshMigrationTimeout, NULL, _("Migration")); virThreadJoin(&workerThread); @@ -19658,9 +19713,7 @@ vshInit(vshControl *ctl) ctl->eventLoopStarted = true; if (ctl->name) { - ctl->conn = virConnectOpenAuth(ctl->name, - virConnectAuthPtrDefault, - ctl->readonly ? VIR_CONNECT_RO : 0); + ctl->conn = vshConnectOpen(ctl->name, ctl->readonly, ctl); /* Connecting to a named connection must succeed, but we delay * connecting to the default connection until we need it @@ -19670,7 +19723,7 @@ vshInit(vshControl *ctl) */ if (!ctl->conn) { virshReportError(ctl); - vshError(ctl, "%s", _("failed to connect to the hypervisor")); + vshError(ctl, "%s", _("Failed to connect to the hypervisor")); return false; } } @@ -20107,7 +20160,10 @@ vshUsage(void) " -v short version\n" " -V long version\n" " --version[=TYPE] version, TYPE is short or long (default short)\n" - " -e | --escape <char> set escape sequence for console\n\n" + " -e | --escape <char> set escape sequence for console\n" + " -i | --keepalive_interval\n" + " interval time value \n" + " -n | --keepalive_count number of keepalive message\n\n" " commands (non interactive mode):\n\n"), progname, progname); for (grp = cmdGroups; grp->name; grp++) { @@ -20284,13 +20340,15 @@ vshParseArgv(vshControl *ctl, int argc, char **argv) {"readonly", no_argument, NULL, 'r'}, {"log", required_argument, NULL, 'l'}, {"escape", required_argument, NULL, 'e'}, + {"keepalive_interval", required_argument, NULL, 'i'}, + {"keepalive_count", required_argument, NULL, 'n'}, {NULL, 0, NULL, 0} }; /* Standard (non-command) options. The leading + ensures that no * argument reordering takes place, so that command options are * not confused with top-level virsh options. */ - while ((arg = getopt_long(argc, argv, "+d:hqtc:vVrl:e:", opt, NULL)) != -1) { + while ((arg = getopt_long(argc, argv, "+d:hqtc:vVrl:e:i:n:", opt, NULL)) != -1) { switch (arg) { case 'd': if (virStrToLong_i(optarg, NULL, 10, &ctl->debug) < 0) { @@ -20339,6 +20397,20 @@ vshParseArgv(vshControl *ctl, int argc, char **argv) exit(EXIT_FAILURE); } break; + case 'i': + if (virStrToLong_ui(optarg, NULL, 10, &ctl->keepalive_interval) < 0) { + vshError(ctl, + "%s", _("option -i takes a non-negative numeric argument")); + exit(EXIT_FAILURE); + } + break; + case 'n': + if (virStrToLong_ui(optarg, NULL, 10, &ctl->keepalive_count) < 0) { + vshError(ctl, + "%s", _("option -n takes a non-negative numeric argument")); + exit(EXIT_FAILURE); + } + break; default: vshError(ctl, _("unsupported option '-%c'. See --help."), arg); exit(EXIT_FAILURE); @@ -20370,6 +20442,8 @@ main(int argc, char **argv) ctl->log_fd = -1; /* Initialize log file descriptor */ ctl->debug = VSH_DEBUG_DEFAULT; ctl->escapeChar = CTRL_CLOSE_BRACKET; + ctl->keepalive_interval = -1; + ctl->keepalive_count = 0; if (!setlocale(LC_ALL, "")) { diff --git a/tools/virsh.pod b/tools/virsh.pod index 6553825..faa97a2 100644 --- a/tools/virsh.pod +++ b/tools/virsh.pod @@ -98,6 +98,19 @@ Set alternative escape sequence for I<console> command. By default, telnet's B<^]> is used. Allowed characters when using hat notation are: alphabetic character, @, [, ], \, ^, _. +=item B<-i>, B<--keepalive_interval> I<second> + +Use together with I<--keepalive_count> to start keepalive messaging between +libvirt client and server. A keepalive message will be sent to a libvirt server +after I<--keepalive_interval> seconds of inactivity to check if server is still +responding. I<seconds> with 0 value has the same effect as without using this +option. + +=item B<-n>, B<--keepalive_count> I<number> +The maximum number of keepalive messages that are allowed to be sent to libvirt +server without getting any response before the connection is considered broken. +I<number> with 0 value has the same effect as without using this option. + =back =head1 NOTES -- 1.7.7.5

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[libvirt] libvirt modification
by Patrick Raad 12 Jun '12

12 Jun '12

Hello, I am not that expert in development, but I am working on a project for migrating VM between hosts and I need to add a function to libvirt in order to send a certain message. What I am using is KVM-qemu as a hypervisor. When a VM "live" migrates from a host A to a host B, I need that the host B sends a certain message through a socket, once the live migration has been successfully completed and the VM is running on host B. Can you please tell me which file I must modify in order to add my function? What does libvirt uses to notify the destination that the migration is completed. I thought about modifying qemu_migration.c, but it didn't seem to work, so I was thinking about using virsh.c, but this way the destination host won't be notified so I don't think it can work... Any ideas?? Thank you -- Patrick RAAD

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[libvirt] Error while installing a guest
by Pankaj Rawat 12 Jun '12

12 Jun '12

Hi all , I have SL6.2 x86_64 Installed on my system I updated libvirt version from 0.9.4 to 0.9.11, I had removed previous libvirt via yum I done this by compiling the source. I started libvirt daemon created by compiling source : # ./root/libvirt_0.9.11/build/daomen/libvirtd Now I tried to create a guest:- [root@localhost libvirt-0.9.11]# /usr/sbin/virt-install --accelerate --hvm --connect qemu:///system --name g3 --vcpu=1 --ram 1024 --os-type=linux --os-variant=rhel6 --network bridge:br0 --disk /var/lib/libvirt/images/g2 --disk=/opt/SL-62-x86_64-2012-02-06-Install-DVD.iso,device=cdrom,perms=ro --location=/mnt/ --nographics --serial pty --extra-args=console=ttyS0,115200n8 --keymap=en --force The command line above normally works fine (I have created many vm by using same above command) But here Following error comes Starting install... Retrieving file .treeinfo... | 768 B 00:00 ... Retrieving file vmlinuz... | 7.5 MB 00:00 ... Retrieving file initrd.img... 100% [=====================================================] 11 MB/s | 29 MB --:-- ETA Retrieving file initrd.img... | 59 MB 00:09 ... ERROR internal error Process exited while reading console log output: Domain installation does not appear to have been successful. If it was, you can restart your domain by running: virsh --connect qemu:///system start g3 otherwise, please restart your installation. at libvirtd console following output comes: 2012-06-12 13:58:55.239+0000: 17800: error : qemuProcessReadLogOutput:1298 : internal error Process exited while reading console log output: 2012-06-12 14:04:12.120+0000: 17802: warning : qemuDomainObjTaint:1227 : Domain id=3 name='g3' uuid=fec6cb5a-d4ea-d2c9-505c-611227fb4f4c is tainted: high-privileges 2012-06-12 13:58:55.239+0000: 17800: error : qemuProcessReadLogOutput:1298 : internal error Process exited while reading console lo I don't know how to resolve this . Regards Pankaj Rawat DISCLAIMER: ----------------------------------------------------------------------------------------------------------------------- The contents of this e-mail and any attachment(s) are confidential and intended for the named recipient(s) only. It shall not attach any liability on the originator or NECHCL or its affiliates. Any views or opinions presented in this email are solely those of the author and may not necessarily reflect the opinions of NECHCL or its affiliates. Any form of reproduction, dissemination, copying, disclosure, modification, distribution and / or publication of this message without the prior written consent of the author of this e-mail is strictly prohibited. If you have received this email in error please delete it and notify the sender immediately. . -----------------------------------------------------------------------------------------------------------------------

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[libvirt] FLOSS Weekly podcast for libvirt is online
by Justin Clift 12 Jun '12

12 Jun '12

Hey all, Eric Blake and Guido Gunther were on the FLOSS Weekly podcast this week, covering libvirt: http://twit.tv/show/floss-weekly/213 (also available in iTunes) Good effort guys. :) + Justin -- Aeolus Community Manager http://www.aeolusproject.org

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[libvirt] [PATCH 0/7] Introduce API for dumping domain IP addresses
by Michal Privoznik 12 Jun '12

12 Jun '12

This feature has been requested for a very long time. However, we had to wait for guest agent to obtain reliable results as user might create totally different structure of interfaces than seen from outside (e.g. bonding, virtual interfaces, etc.). That's the main reason why sniffing for domain traffic can return bogus results. Fortunately, qemu guest agent implement requested part for a while so nothing holds us back anymore. To make matters worse, guest OS can assign whatever name to an interface and changing MAC inside guest isn't propagated to the host which in the end see original one. Therefore, finding correlation between interface within guest and the host side end is left as exercise for mgmt applications. This API is called virDomainInterfacesAddresses (okay, maybe too many plurals) and returns a dynamically allocated array of virDomainInterface struct. The great disadvantage once this gets released, it's written in stone and we cannot change or add an item into it. Therefore we might add a padding into it - something like reserved for future use. On the other hand, everything important is already there - what else we will want to add? :) There are basically two approaches: 1) two APIs: one for list interfaces names, the other for querying addresses on singe interface 2) one API that returns everything I've chosen the latter as it's race free (query for interface that has gone meanwhile). Michal Privoznik (7): Introduce virDomainInterfacesAddresses API virsh: Expose virDomainInterfacesAddresses qemu_agent: Implement 'guest-network-get-interfaces' command handling qemu: Implement virDomainInterfacesAddresses remote: Implement virDomainInterfacesAddresses python: Expose virDomainInterfacesAddresses python: create example for dumping domain IP addresses daemon/remote.c | 122 ++++++++++++++++++++++++++++++ examples/python/Makefile.am | 2 +- examples/python/README | 1 + examples/python/domipaddrs.py | 50 ++++++++++++ include/libvirt/libvirt.h.in | 32 ++++++++ python/generator.py | 1 + python/libvirt-override-api.xml | 6 ++ python/libvirt-override.c | 116 ++++++++++++++++++++++++++++ src/driver.h | 6 ++ src/libvirt.c | 101 +++++++++++++++++++++++++ src/libvirt_public.syms | 5 + src/qemu/qemu_agent.c | 158 +++++++++++++++++++++++++++++++++++++++ src/qemu/qemu_agent.h | 4 + src/qemu/qemu_driver.c | 76 +++++++++++++++++++ src/remote/remote_driver.c | 95 +++++++++++++++++++++++ src/remote/remote_protocol.x | 25 ++++++- tools/virsh.c | 92 +++++++++++++++++++++++ tools/virsh.pod | 10 +++ 18 files changed, 900 insertions(+), 2 deletions(-) create mode 100644 examples/python/domipaddrs.py -- 1.7.8.5

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[libvirt] [PATCH 0/4] virsh snapshot-info
by Eric Blake 12 Jun '12

12 Jun '12

I'm working on a patch series to allow offline disk snapshots, and in the process, I found that I either don't have enough information ('virsh snapshot-list' is great for a summary, but not for an individual snapshot) or too much ('virsh snapshot-dumpxml' means I have to wade through the XML). This provides an intermediate view, designed for ease of use. Eric Blake (4): snapshot: new query APIs snapshot: add 'virsh snapshot-info' snapshot: RPC for new query APIs snapshot: implement new APIs for qemu, esx, and vbox include/libvirt/libvirt.h.in | 9 +++ src/driver.h | 10 +++ src/esx/esx_driver.c | 71 ++++++++++++++++++++++++ src/libvirt.c | 85 ++++++++++++++++++++++++++++ src/libvirt_public.syms | 6 ++ src/qemu/qemu_driver.c | 83 ++++++++++++++++++++++++++++ src/remote/remote_driver.c | 2 + src/remote/remote_protocol.x | 23 +++++++- src/remote_protocol-structs | 16 +++++ src/vbox/vbox_tmpl.c | 97 ++++++++++++++++++++++++++++++++ tools/virsh.c | 125 ++++++++++++++++++++++++++++++++++++++++++ tools/virsh.pod | 5 ++ 12 files changed, 531 insertions(+), 1 deletions(-) -- 1.7.7.6

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[libvirt] [PATCH] docs: minor fixes to domain interface documentation
by Laine Stump 12 Jun '12

12 Jun '12

A few examples for <interface> had a type='direct' interface with no sub-elements. This is not allowed - a type='direct' interface must have at least a source element. (Most likely the example was copied from the type='user' or type='ethernet' examples - they *do* allow an instance with no sub-elements). There was also one place that mistakenly used %lt; ... %gt; instead of < ... > (for some reason, I make that typo all the time). --- Pushed under the trivial rule. docs/formatdomain.html.in | 5 +---- 1 file changed, 1 insertion(+), 4 deletions(-) diff --git a/docs/formatdomain.html.in b/docs/formatdomain.html.in index 95c3edc..b2e5db9 100644 --- a/docs/formatdomain.html.in +++ b/docs/formatdomain.html.in @@ -2364,7 +2364,6 @@ <pre> ... <devices> - <interface type='direct'/> ... <interface type='direct'> <source dev='eth0' mode='vepa'/> @@ -2413,7 +2412,6 @@ <pre> ... <devices> - <interface type='direct'/> ... <interface type='direct'> <source dev='eth0.2' mode='vepa'/> @@ -2441,7 +2439,6 @@ <pre> ... <devices> - <interface type='direct'/> ... <interface type='direct'> <source dev='eth0' mode='private'/> @@ -2462,7 +2459,7 @@ passthrough, after first optionally setting the device's MAC address to the configured value, and associating the device with an 802.1Qgh capable switch using an optionally specified - %lt;virtualport%gt; element (see the examples of virtualport + <virtualport> element (see the examples of virtualport given above for type='direct' network devices). Note that - due to limitations in standard single-port PCI ethernet card driver design - only SR-IOV (Single Root I/O Virtualization) virtual -- 1.7.10.2

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[libvirt] [PATCH] Two RPM conditional fixes for RHEL-7
by Daniel P. Berrange 12 Jun '12

12 Jun '12

From: "Daniel P. Berrange" <berrange(a)redhat.com> Ensure systemd is used in RHEL-7 and cgconfig is not used in RHEL-7 --- libvirt.spec.in | 11 ++++++----- 1 file changed, 6 insertions(+), 5 deletions(-) diff --git a/libvirt.spec.in b/libvirt.spec.in index a78b117..f8e3b05 100644 --- a/libvirt.spec.in +++ b/libvirt.spec.in @@ -133,8 +133,9 @@ %define with_hyperv 0 %endif -# Although earlier Fedora has systemd, libvirt still used sysvinit -%if 0%{?fedora} >= 17 +# Fedora 17 / RHEL-7 are first where we use systemd. Although earlier +# Fedora has systemd, libvirt still used sysvinit there. +%if 0%{?fedora} >= 17 || 0{?rhel} >= 7 %define with_systemd 1 %endif @@ -1348,9 +1349,9 @@ if [ $1 -eq 1 ] ; then fi %else %if %{with_cgconfig} -# Starting with Fedora 16, systemd automounts all cgroups, and cgconfig is -# no longer a necessary service. -%if 0%{?rhel} || (0%{?fedora} && 0%{?fedora} < 16) +# Starting with Fedora 16/RHEL-7, systemd automounts all cgroups, +# and cgconfig is no longer a necessary service. +%if (0%{?rhel} && 0%{?rhel} < 7) || (0%{?fedora} && 0%{?fedora} < 16) if [ "$1" -eq "1" ]; then /sbin/chkconfig cgconfig on fi -- 1.7.10.2

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[libvirt] [PATCH] nwfilter: Display detected IP address in domain XML
by Stefan Berger 12 Jun '12

12 Jun '12

Display detected IP addresses in the domain XML using the IP_LEASE variable name. This variable name now becomes a reserved variable name that can be read only but not set by the user. The format of the value is: <ip address>,<lease timeout in seconds> An example of a displayed XML may then be: <interface type='bridge'> <mac address='52:54:00:68:e3:90'/> <source bridge='virbr0'/> <target dev='vnet1'/> <model type='virtio'/> <filterref filter='clean-traffic'> <parameter name='CTRL_IP_LEARNING' value='dhcp'/> <parameter name='IP_LEASE' value='192.168.122.210,100'/> </filterref> <alias name='net0'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0'/> </interface> This patch now also offers a better (libvirt-internal) API for accessing the detected IP addresses. The function virDomainConfNWFilterGetLeases can be used to retrieve a list of IP leases associated with a given interface. This function will then either retrieve the data from the DHCP snooping or IP learning subsystems, depending on which detection algorithm has been activated. If none is active, a NULL pointer for the array of leases will be returned. --- PS: This is the last remaining patch of the DHCP snooping series. I am submitting it now as a stand-alone patch restarting the version counting. --- docs/formatnwfilter.html.in | 27 +++++++++++ src/conf/domain_conf.c | 16 +++++-- src/conf/domain_nwfilter.c | 13 +++++ src/conf/domain_nwfilter.h | 15 ++++++ src/conf/nwfilter_conf.c | 3 - src/conf/nwfilter_ipaddrmap.c | 51 ++++++++++++++++++++++ src/conf/nwfilter_ipaddrmap.h | 5 ++ src/conf/nwfilter_params.c | 75 ++++++++++++++++++++++++++++++++- src/conf/nwfilter_params.h | 9 +++ src/libvirt_private.syms | 5 +- src/nwfilter/nwfilter_dhcpsnoop.c | 59 +++++++++++++++++++++++++ src/nwfilter/nwfilter_dhcpsnoop.h | 4 + src/nwfilter/nwfilter_driver.c | 10 ++++ src/nwfilter/nwfilter_gentech_driver.c | 26 +++++++++++ src/nwfilter/nwfilter_gentech_driver.h | 8 +++ src/nwfilter/nwfilter_learnipaddr.c | 9 +++ src/nwfilter/nwfilter_learnipaddr.h | 2 src/util/viriplease.h | 18 +++++++ 18 files changed, 345 insertions(+), 10 deletions(-) Index: libvirt-acl/src/conf/nwfilter_params.h =================================================================== --- libvirt-acl.orig/src/conf/nwfilter_params.h +++ libvirt-acl/src/conf/nwfilter_params.h @@ -72,7 +72,10 @@ struct _virNWFilterHashTable { virNWFilterHashTablePtr virNWFilterParseParamAttributes(xmlNodePtr cur); int virNWFilterFormatParamAttributes(virBufferPtr buf, virNWFilterHashTablePtr table, - const char *filterref); + const char *filterref, + const unsigned char *vmuuid, + const unsigned char *mac, + const char *ifname); virNWFilterHashTablePtr virNWFilterHashTableCreate(int n); void virNWFilterHashTableFree(virNWFilterHashTablePtr table); @@ -89,12 +92,14 @@ int virNWFilterHashTablePutAll(virNWFilt "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789_" # define VALID_VARVALUE \ - "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789_.:" + "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789_.:," # define NWFILTER_VARNAME_IP "IP" # define NWFILTER_VARNAME_MAC "MAC" # define NWFILTER_VARNAME_CTRL_IP_LEARNING "CTRL_IP_LEARNING" # define NWFILTER_VARNAME_DHCPSERVER "DHCPSERVER" +# define NWFILTER_VARNAME_IP_LEASE "IP_LEASE" +# define NWFILTER_VARNAME_IPV6_LEASE "IPV6_LEASE" /* future */ enum virNWFilterVarAccessType { VIR_NWFILTER_VAR_ACCESS_ELEMENT = 0, Index: libvirt-acl/src/conf/domain_conf.c =================================================================== --- libvirt-acl.orig/src/conf/domain_conf.c +++ libvirt-acl/src/conf/domain_conf.c @@ -43,6 +43,7 @@ #include "buf.h" #include "c-ctype.h" #include "logging.h" +#include "nwfilter_params.h" #include "nwfilter_conf.h" #include "ignore-value.h" #include "storage_file.h" @@ -11500,7 +11501,8 @@ error: static int virDomainNetDefFormat(virBufferPtr buf, virDomainNetDefPtr def, - unsigned int flags) + unsigned int flags, + const unsigned char *vmuuid) { const char *type = virDomainNetTypeToString(def->type); @@ -11641,9 +11643,15 @@ virDomainNetDefFormat(virBufferPtr buf, } } if (def->filter) { + const char *ifname = NULL; + + if (!(flags & VIR_DOMAIN_XML_INACTIVE)) + ifname = def->ifname; + virBufferAdjustIndent(buf, 6); if (virNWFilterFormatParamAttributes(buf, def->filterparams, - def->filter) < 0) + def->filter, vmuuid, def->mac, + ifname) < 0) return -1; virBufferAdjustIndent(buf, -6); } @@ -12969,7 +12977,7 @@ virDomainDefFormatInternal(virDomainDefP for (n = 0 ; n < def->nnets ; n++) - if (virDomainNetDefFormat(buf, def->nets[n], flags) < 0) + if (virDomainNetDefFormat(buf, def->nets[n], flags, def->uuid) < 0) goto cleanup; for (n = 0 ; n < def->nsmartcards ; n++) @@ -15222,7 +15230,7 @@ virDomainDeviceDefCopy(virCapsPtr caps, rc = virDomainFSDefFormat(&buf, src->data.fs, flags); break; case VIR_DOMAIN_DEVICE_NET: - rc = virDomainNetDefFormat(&buf, src->data.net, flags); + rc = virDomainNetDefFormat(&buf, src->data.net, flags, def->uuid); break; case VIR_DOMAIN_DEVICE_INPUT: rc = virDomainInputDefFormat(&buf, src->data.input, flags); Index: libvirt-acl/src/conf/nwfilter_conf.c =================================================================== --- libvirt-acl.orig/src/conf/nwfilter_conf.c +++ libvirt-acl/src/conf/nwfilter_conf.c @@ -3406,7 +3406,8 @@ virNWFilterIncludeDefFormat(virNWFilterI virBufferAdjustIndent(&buf, 2); if (virNWFilterFormatParamAttributes(&buf, inc->params, - inc->filterref) < 0) { + inc->filterref, + NULL, NULL, NULL) < 0) { virBufferFreeAndReset(&buf); return NULL; } Index: libvirt-acl/src/libvirt_private.syms =================================================================== --- libvirt-acl.orig/src/libvirt_private.syms +++ libvirt-acl/src/libvirt_private.syms @@ -552,6 +552,7 @@ virDomainLockLeaseDetach; # domain_nwfilter.h +virDomainConfNWFiltetGetLeases; virDomainConfNWFilterInstantiate; virDomainConfNWFilterRegister; virDomainConfNWFilterTeardown; @@ -873,15 +874,17 @@ virNWFilterTestUnassignDef; virNWFilterUnlockFilterUpdates; -# nwfilter_ipaddrmap +# nwfilter_ipaddrmap.h virNWFilterIPAddrMapAddIPAddr; virNWFilterIPAddrMapDelIPAddr; virNWFilterIPAddrMapGetIPAddr; +virNWFilterIPAddrMapGetIPLeases; virNWFilterIPAddrMapInit; virNWFilterIPAddrMapShutdown; # nwfilter_params.h +virNWFilterFormatParamAttributes; virNWFilterHashTableCreate; virNWFilterHashTableFree; virNWFilterHashTablePut; Index: libvirt-acl/src/conf/nwfilter_params.c =================================================================== --- libvirt-acl.orig/src/conf/nwfilter_params.c +++ libvirt-acl/src/conf/nwfilter_params.c @@ -31,9 +31,16 @@ #include "nwfilter_params.h" #include "domain_conf.h" #include "logging.h" +#include "domain_nwfilter.h" +#include "nwfilter_ipaddrmap.h" #define VIR_FROM_THIS VIR_FROM_NWFILTER +static const char *virNWFilterReservedVarnames[] = { + NWFILTER_VARNAME_IP_LEASE, + NWFILTER_VARNAME_IPV6_LEASE, +}; + static bool isValidVarValue(const char *value); static void virNWFilterVarAccessSetIntIterId(virNWFilterVarAccessPtr, unsigned int); @@ -784,6 +791,19 @@ virNWFilterParseVarValue(const char *val return virNWFilterVarValueCreateSimpleCopyValue(val); } +static void +virNWFilterDelReservedVarnames(virNWFilterHashTablePtr ht) +{ + unsigned int i; + virNWFilterVarValuePtr val; + + for (i = 0; i < ARRAY_CARDINALITY(virNWFilterReservedVarnames); i++) { + val = virNWFilterHashTableRemoveEntry(ht, + virNWFilterReservedVarnames[i]); + virNWFilterVarValueFree(val); + } +} + virNWFilterHashTablePtr virNWFilterParseParamAttributes(xmlNodePtr cur) { @@ -834,6 +854,15 @@ skip_entry: } cur = cur->next; } + + /* + * read-only variables that may be usable in an incoming + * migration could be wired up here. + */ + + /* remove all reserved varnames from the table */ + virNWFilterDelReservedVarnames(table); + return table; err_exit: @@ -855,10 +884,16 @@ virNWFilterFormatParameterNameSorter(con int virNWFilterFormatParamAttributes(virBufferPtr buf, virNWFilterHashTablePtr table, - const char *filterref) + const char *filterref, + const unsigned char *vmuuid, + const unsigned char *mac, + const char *ifname) { virHashKeyValuePairPtr items; + virIPLeasePtr leases = NULL; + size_t nLeases = 0; int i, j, card, numKeys; + int ret = 0; numKeys = virHashSize(table->hashTable); @@ -889,14 +924,50 @@ virNWFilterFormatParamAttributes(virBuff virNWFilterVarValueGetNthValue(value, j)); } + if (ifname) { + time_t now = time(0); + /* also display the IP addresses being used */ + if (virDomainConfNWFilterGetLeases(&leases, &nLeases, + table, + ifname, + vmuuid, + mac) < 0) { + ret = -1; + goto cleanup; + } + + for (i = 0; i < nLeases; i++) { + int64_t to; + char *ipbuf = virSocketAddrFormat(&leases[i].addr); + + if (!ipbuf) { + virReportOOMError(); + ret = -1; + goto cleanup; + } + + to = (leases[i].timeout != VIR_IPLEASE_TIMEOUT_NONE) + ? (int64_t)(leases[i].timeout - now) + : -1; + + virBufferAsprintf(buf, + " <parameter name='" + NWFILTER_VARNAME_IP_LEASE + "' value='%s,%ld'/>\n", + ipbuf, to); + VIR_FREE(ipbuf); + } + } virBufferAddLit(buf, "</filterref>\n"); } else { virBufferAddLit(buf, "/>\n"); } +cleanup: VIR_FREE(items); + VIR_FREE(leases); - return 0; + return ret; } void Index: libvirt-acl/src/nwfilter/nwfilter_dhcpsnoop.c =================================================================== --- libvirt-acl.orig/src/nwfilter/nwfilter_dhcpsnoop.c +++ libvirt-acl/src/nwfilter/nwfilter_dhcpsnoop.c @@ -1987,6 +1987,57 @@ virNWFilterSnoopLeaseFileLoad(void) } /* + * Get the detected IP addresses along with their absolute lease timeout. + */ +int +virNWFilterSnoopGetLeases(virIPLeasePtr *leases, size_t *nLeases, + const unsigned char *vmuuid, + const unsigned char *macaddr) +{ + int ret = 0; + char ifkey[VIR_IFKEY_LEN]; + virNWFilterSnoopReqPtr req; + virNWFilterSnoopIPLeasePtr ipl; + size_t ctr = 0; + virIPLeasePtr myleases = NULL; + + *leases = NULL; + + virNWFilterSnoopIFKeyFMT(ifkey, vmuuid, macaddr); + + req = virNWFilterSnoopReqGetByIFKey(ifkey); + if (req) { + time_t now = time(0); + + /* protect req->start */ + virNWFilterSnoopReqLock(req); + + for (ipl = req->start; ipl; ipl = ipl->next) { + if (ipl->timeout <= now) + continue; + + if (VIR_EXPAND_N(myleases, ctr, 1) < 0) { + VIR_FREE(myleases); + ret = -1; + goto cleanup; + } + + myleases[ctr-1].addr = ipl->ipAddress; + myleases[ctr-1].timeout = ipl->timeout; + } + + *leases = myleases; + *nLeases = ctr; + +cleanup: + virNWFilterSnoopReqUnlock(req); + + virNWFilterSnoopReqPut(req); + } + return ret; +} + +/* * Wait until all threads have ended. */ static void @@ -2174,6 +2225,14 @@ virNWFilterDHCPSnoopShutdown(void) #else /* HAVE_LIBPCAP */ int +virNWFilterSnoopGetLeases(virIPLeasePtr *leases ATTRIBUTE_UNUSED, + size_t *nLeases ATTRIBUTE_UNUSED, + const unsigned char *vmuuid ATTRIBUTE_UNUSED, + const unsigned char *macaddr ATTRIBUTE_UNUSED) +{ +} + +int virNWFilterDHCPSnoopInit(void) { return -1; Index: libvirt-acl/src/nwfilter/nwfilter_dhcpsnoop.h =================================================================== --- libvirt-acl.orig/src/nwfilter/nwfilter_dhcpsnoop.h +++ libvirt-acl/src/nwfilter/nwfilter_dhcpsnoop.h @@ -36,4 +36,8 @@ int virNWFilterDHCPSnoopReq(virNWFilterT virNWFilterHashTablePtr filterparams, virNWFilterDriverStatePtr driver); void virNWFilterDHCPSnoopEnd(const char *ifname); +int virNWFilterSnoopGetLeases(virIPLeasePtr *leases, size_t *nLeases, + const unsigned char *vmuuid, + const unsigned char *macaddr); + #endif /* __NWFILTER_DHCPSNOOP_H */ Index: libvirt-acl/src/conf/domain_nwfilter.c =================================================================== --- libvirt-acl.orig/src/conf/domain_nwfilter.c +++ libvirt-acl/src/conf/domain_nwfilter.c @@ -60,3 +60,16 @@ virDomainConfVMNWFilterTeardown(virDomai virDomainConfNWFilterTeardown(vm->def->nets[i]); } } + +int +virDomainConfNWFilterGetLeases(virIPLeasePtr *leases, size_t *nLeases, + virNWFilterHashTablePtr table, + const char *ifname, + const unsigned char *vmuuid, + const unsigned char *mac) +{ + if (nwfilterDriver != NULL) + return nwfilterDriver->getLeases(leases, nLeases, table, ifname, + vmuuid, mac); + return 0; +} Index: libvirt-acl/src/conf/domain_nwfilter.h =================================================================== --- libvirt-acl.orig/src/conf/domain_nwfilter.h +++ libvirt-acl/src/conf/domain_nwfilter.h @@ -23,14 +23,24 @@ #ifndef DOMAIN_NWFILTER_H # define DOMAIN_NWFILTER_H +# include "viriplease.h" + typedef int (*virDomainConfInstantiateNWFilter)(virConnectPtr conn, const unsigned char *vmuuid, virDomainNetDefPtr net); typedef void (*virDomainConfTeardownNWFilter)(virDomainNetDefPtr net); +typedef int (*virDomainConfGetLeases)(virIPLeasePtr *leases, + size_t *nLeases, + virNWFilterHashTablePtr table, + const char *ifname, + const unsigned char *vmuuid, + const unsigned char *mac); + typedef struct { virDomainConfInstantiateNWFilter instantiateFilter; virDomainConfTeardownNWFilter teardownFilter; + virDomainConfGetLeases getLeases; } virDomainConfNWFilterDriver; typedef virDomainConfNWFilterDriver *virDomainConfNWFilterDriverPtr; @@ -41,5 +51,10 @@ int virDomainConfNWFilterInstantiate(vir virDomainNetDefPtr net); void virDomainConfNWFilterTeardown(virDomainNetDefPtr net); void virDomainConfVMNWFilterTeardown(virDomainObjPtr vm); +int virDomainConfNWFilterGetLeases(virIPLeasePtr *leases, size_t *nLeases, + virNWFilterHashTablePtr table, + const char *ifname, + const unsigned char *vmuuid, + const unsigned char *mac); #endif /* DOMAIN_NWFILTER_H */ Index: libvirt-acl/src/nwfilter/nwfilter_gentech_driver.c =================================================================== --- libvirt-acl.orig/src/nwfilter/nwfilter_gentech_driver.c +++ libvirt-acl/src/nwfilter/nwfilter_gentech_driver.c @@ -1209,3 +1209,29 @@ virNWFilterDomainFWUpdateCB(void *payloa virDomainObjUnlock(obj); } + +int +virNWFilterGetLeases(virIPLeasePtr *leases, size_t *nLeases, + virNWFilterHashTablePtr vars, + const char *ifname, + const unsigned char *vmuuid, + const unsigned char *mac) +{ + virNWFilterVarValuePtr lv; + const char *learning = NULL; + int ret = 0; + + if (!vars) + return 0; + + lv = virHashLookup(vars->hashTable, NWFILTER_VARNAME_CTRL_IP_LEARNING); + if (lv) + learning = virNWFilterVarValueGetNthValue(lv, 0); + + if (!learning || STRCASEEQ(learning, "any")) { + ret = virNWFilterLearnGetLeases(leases, nLeases, ifname); + } else if (STRCASEEQ(learning, "dhcp")) { + ret = virNWFilterSnoopGetLeases(leases, nLeases, vmuuid, mac); + } + return ret; +} Index: libvirt-acl/src/nwfilter/nwfilter_gentech_driver.h =================================================================== --- libvirt-acl.orig/src/nwfilter/nwfilter_gentech_driver.h +++ libvirt-acl/src/nwfilter/nwfilter_gentech_driver.h @@ -23,6 +23,8 @@ #ifndef __NWFILTER_GENTECH_DRIVER_H # define __NWFILTER_GENTECH_DRIVER_H +# include "viriplease.h" + virNWFilterTechDriverPtr virNWFilterTechDriverForName(const char *name); int virNWFilterRuleInstAddData(virNWFilterRuleInstPtr res, @@ -64,4 +66,10 @@ void virNWFilterDomainFWUpdateCB(void *p const void *name, void *data); +int virNWFilterGetLeases(virIPLeasePtr *leases, size_t *nLeases, + virNWFilterHashTablePtr vars, + const char *ifname, + const unsigned char *vmmuid, + const unsigned char *mac); + #endif Index: libvirt-acl/src/nwfilter/nwfilter_driver.c =================================================================== --- libvirt-acl.orig/src/nwfilter/nwfilter_driver.c +++ libvirt-acl/src/nwfilter/nwfilter_driver.c @@ -463,6 +463,15 @@ nwfilterTeardownFilter(virDomainNetDefPt virNWFilterTeardownFilter(net); } +static int +nwfilterGetLeases(virIPLeasePtr *leases, size_t *nLeases, + virNWFilterHashTablePtr vars, + const char *ifname, + const unsigned char *vmuuid, + const unsigned char *mac) +{ + return virNWFilterGetLeases(leases, nLeases, vars, ifname, vmuuid, mac); +} static virNWFilterDriver nwfilterDriver = { .name = "nwfilter", @@ -490,6 +499,7 @@ static virStateDriver stateDriver = { static virDomainConfNWFilterDriver domainNWFilterDriver = { .instantiateFilter = nwfilterInstantiateFilter, .teardownFilter = nwfilterTeardownFilter, + .getLeases = nwfilterGetLeases, }; Index: libvirt-acl/src/conf/nwfilter_ipaddrmap.h =================================================================== --- libvirt-acl.orig/src/conf/nwfilter_ipaddrmap.h +++ libvirt-acl/src/conf/nwfilter_ipaddrmap.h @@ -26,6 +26,9 @@ #ifndef __VIR_NWFILTER_IPADDRMAP_H # define __VIR_NWFILTER_IPADDRMAP_H +# include "buf.h" +# include "viriplease.h" + int virNWFilterIPAddrMapInit(void); void virNWFilterIPAddrMapShutdown(void); @@ -33,5 +36,7 @@ int virNWFilterIPAddrMapAddIPAddr(const int virNWFilterIPAddrMapDelIPAddr(const char *ifname, const char *ipaddr); virNWFilterVarValuePtr virNWFilterIPAddrMapGetIPAddr(const char *ifname); +int virNWFilterIPAddrMapGetIPLeases(const char *ifname, + virIPLeasePtr *leases, size_t *nLeases); #endif /* __VIR_NWFILTER_IPADDRMAP_H */ Index: libvirt-acl/src/nwfilter/nwfilter_learnipaddr.c =================================================================== --- libvirt-acl.orig/src/nwfilter/nwfilter_learnipaddr.c +++ libvirt-acl/src/nwfilter/nwfilter_learnipaddr.c @@ -771,6 +771,15 @@ virNWFilterLearnIPAddress(virNWFilterTec } #endif /* HAVE_LIBPCAP */ +/* + * Get the detected IP addresses along with their absolute lease timeout + */ +int +virNWFilterLearnGetLeases(virIPLeasePtr *leases, size_t *nLeases, + const char *ifname) +{ + return virNWFilterIPAddrMapGetIPLeases(ifname, leases, nLeases); +} /** * virNWFilterLearnInit Index: libvirt-acl/src/nwfilter/nwfilter_learnipaddr.h =================================================================== --- libvirt-acl.orig/src/nwfilter/nwfilter_learnipaddr.h +++ libvirt-acl/src/nwfilter/nwfilter_learnipaddr.h @@ -71,5 +71,7 @@ void virNWFilterUnlockIface(const char * int virNWFilterLearnInit(void); void virNWFilterLearnShutdown(void); void virNWFilterLearnThreadsTerminate(bool allowNewThreads); +int virNWFilterLearnGetLeases(virIPLeasePtr *leases, size_t *nLeases, + const char *ifname); #endif /* __NWFILTER_LEARNIPADDR_H */ Index: libvirt-acl/docs/formatnwfilter.html.in =================================================================== --- libvirt-acl.orig/docs/formatnwfilter.html.in +++ libvirt-acl/docs/formatnwfilter.html.in @@ -446,6 +446,22 @@ </interface> </pre> + <p> + Once an IP address has been detected, the domain's interface XML + will display the detected IP address and its lease expiration time + in seconds. Note that the <code>IP_LEASE</code> variable is read-only + and cannot be set by the user. + </p> +<pre> + <interface type='bridge'> + <source bridge='virbr0'/> + <filterref filter='clean-traffic'> + <parameter name='CTRL_IP_LEARNING' value='dhcp'/> + <parameter name='IP_LEASE' value='192.168.122.100,200'/> + </filterref> + </interface> +</pre> + <h3><a name="nwfelemsReservedVars">Reserved Variables</a></h3> <p> The following table lists reserved variables in use by libvirt. @@ -481,6 +497,17 @@ <td> CTRL_IP_LEARNING </td> <td> The choice of the IP address detection mode </td> </tr> + <tr> + <td> IP_LEASE (<span class="since">Since 0.9.13</span>)</td> + <td> Read-only variable displaying the detected IP lease in the + format IP address,lease expiration time in seconds </td> + </tr> + <tr> + <td> IPV6_LEASE </td> + <td> Not currently implemented: + Read-only variable displaying the detected IPV6 lease in the + format IPV6 address,lease expiration time in seconds </td> + </tr> </table> <h2><a name="nwfelems">Element and attribute overview</a></h2> Index: libvirt-acl/src/util/viriplease.h =================================================================== --- /dev/null +++ libvirt-acl/src/util/viriplease.h @@ -0,0 +1,18 @@ +#ifndef __VIR_IPLEASE_H__ +# define __VIR_IPLEASE_H__ + +# include <time.h> + +# include "virsocketaddr.h" + +typedef struct _virIPLease virIPLease; +typedef virIPLease *virIPLeasePtr; + +struct _virIPLease { + virSocketAddr addr; + time_t timeout; +}; + +#define VIR_IPLEASE_TIMEOUT_NONE (-1) + +#endif /* __VIR_IP_LEASE_H__ */ Index: libvirt-acl/src/conf/nwfilter_ipaddrmap.c =================================================================== --- libvirt-acl.orig/src/conf/nwfilter_ipaddrmap.c +++ libvirt-acl/src/conf/nwfilter_ipaddrmap.c @@ -28,6 +28,7 @@ #include "virterror_internal.h" #include "datatypes.h" +#include "memory.h" #include "nwfilter_params.h" #include "nwfilter_ipaddrmap.h" @@ -142,6 +143,56 @@ virNWFilterIPAddrMapGetIPAddr(const char return res; } +/* + * Get the IP addresses associated with the interface as an array + * of virIPLease. Since we don't know about lease timeouts here, we + * set the lease timeout to VIR_IPLEASE_TIMEOUT_NONE. + */ +int +virNWFilterIPAddrMapGetIPLeases(const char *ifname, + virIPLeasePtr *leases, size_t *nLeases) +{ + int ret = 0; + virNWFilterVarValuePtr val; + virIPLeasePtr myleases = NULL; + + *leases = NULL; + + virMutexLock(&ipAddressMapLock); + + val = virHashLookup(ipAddressMap->hashTable, ifname); + + if (val) { + size_t card = virNWFilterVarValueGetCardinality(val); + unsigned int i; + + if (VIR_ALLOC_N(myleases, card) < 0) { + virReportOOMError(); + ret = -1; + goto cleanup; + } + + for (i = 0; i < card; i++) { + const char *value = virNWFilterVarValueGetNthValue(val, i); + + if (virSocketAddrParse(&myleases[i].addr, value, AF_UNSPEC) < 0) { + VIR_FREE(myleases); + ret = -1; + goto cleanup; + } + myleases[i].timeout = VIR_IPLEASE_TIMEOUT_NONE; + } + + *leases = myleases; + *nLeases = card; + } + +cleanup: + virMutexUnlock(&ipAddressMapLock); + + return ret; +} + int virNWFilterIPAddrMapInit(void) {

3 3