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[libvirt] Valid characters in domain names?
by Richard W.M. Jones 25 Nov '10

25 Nov '10

Does libvirt enforce any sort of validity of characters in guest names? Someone tried to create a domain called '#' (the single hash character) and noted that this caused failures in virt-tools: https://bugzilla.redhat.com/show_bug.cgi?id=639601 https://bugzilla.redhat.com/show_bug.cgi?id=639602 Had a look at the code but couldn't see anything obvious: It seems like libvirt delegates this entirely to the drivers, the drivers (probably) all call virDomainDefParseXML, and this function does no checking that I could see. If my analysis is correct, this could be dangerous. What if the name contains a character that is special to the qemu command line (','), to XML ('>'), or to C ()? As an example, the code already does: char *virDomainDefFormat(virDomainDefPtr def, int flags) { ... virBufferEscapeString(&buf, " <name>%s</name>\n", def->name); ... } Rich. -- Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones virt-df lists disk usage of guests without needing to install any software inside the virtual machine. Supports Linux and Windows. http://et.redhat.com/~rjones/virt-df/

8 24

[libvirt] [PATCH] Fix host CPU counting on unusual NUMA topologies
by Jiri Denemark 25 Nov '10

25 Nov '10

The nodeinfo structure includes nodes : the number of NUMA cell, 1 for uniform mem access sockets : number of CPU socket per node cores : number of core per socket threads : number of threads per core which does not work well for NUMA topologies where each node does not consist of integral number of CPU sockets. We also have VIR_NODEINFO_MAXCPUS macro in public libvirt.h which computes maximum number of CPUs as (nodes * sockets * cores * threads). As a result, we can't just change sockets to report total number of sockets instead of sockets per node. This would probably be the easiest since I doubt anyone is using the field directly. But because of the macro, some apps might be using sockets indirectly. This patch leaves sockets to be the number of CPU sockets per node (and fixes qemu driver to comply with this) on machines where sockets can be divided by nodes. If we can't divide sockets by nodes, we behave as if there was just one NUMA node containing all sockets. Apps interested in NUMA should consult capabilities XML, which is what they probably do anyway. This way, the only case in which apps that care about NUMA may break is on machines with funky NUMA topology. And there is a chance libvirt wasn't able to start any guests on those machines anyway (although it depends on the topology, total number of CPUs and kernel version). Nothing changes at all for apps that don't care about NUMA. Notes: * Testing on 4 sockets, 12 cores each, 8 NUMA nodes Xen (RHEL-5) hypervisor with numa=on: - xm info nr_cpus : 48 nr_nodes : 8 sockets_per_node : 0 cores_per_socket : 12 threads_per_core : 1 - virsh nodeinfo CPU(s): 48 CPU socket(s): 4 Core(s) per socket: 12 Thread(s) per core: 1 NUMA cell(s): 1 - virsh capabilities /capabilities/host/topology/cells@num = 8 QEMU driver: - virsh nodeinfo CPU(s): 48 CPU socket(s): 4 Core(s) per socket: 12 Thread(s) per core: 1 NUMA cell(s): 1 - virsh capabilities /capabilities/host/topology/cells@num = 8 * 2 sockets, 4 cores each, 2 NUMA nodes Xen (RHEL-5) hypervisor with numa=on: - xm info nr_cpus : 8 nr_nodes : 2 sockets_per_node : 1 cores_per_socket : 4 threads_per_core : 1 - virsh nodeinfo CPU(s): 8 CPU socket(s): 1 Core(s) per socket: 4 Thread(s) per core: 1 NUMA cell(s): 2 - virsh capabilities /capabilities/host/topology/cells@num = 2 QEMU driver: - virsh nodeinfo CPU(s): 8 CPU socket(s): 1 Core(s) per socket: 4 Thread(s) per core: 1 NUMA cell(s): 2 - virsh capabilities /capabilities/host/topology/cells@num = 2 * uniform memory architecture, 2 sockets, 4 cores each Xen (RHEL-5) hypervisor: - xm info nr_cpus : 8 nr_nodes : 1 sockets_per_node : 2 cores_per_socket : 4 threads_per_core : 1 - virsh nodeinfo CPU(s): 8 CPU socket(s): 2 Core(s) per socket: 4 Thread(s) per core: 1 NUMA cell(s): 1 - virsh capabilities /capabilities/host/topology/cells@num = 1 Xen (upstream) hypervisor: - xm info nr_cpus : 8 nr_nodes : 1 cores_per_socket : 4 threads_per_core : 1 - virsh nodeinfo CPU(s): 8 CPU socket(s): 2 Core(s) per socket: 4 Thread(s) per core: 1 NUMA cell(s): 1 - virsh capabilities /capabilities/host/topology/cells@num = 1 QEMU driver: - virsh nodeinfo CPU(s): 8 CPU socket(s): 2 Core(s) per socket: 4 Thread(s) per core: 1 NUMA cell(s): 1 - virsh capabilities /capabilities/host/topology/cells@num = 1 --- include/libvirt/libvirt.h.in | 9 ++++++--- src/nodeinfo.c | 10 ++++++++++ src/xen/xend_internal.c | 19 ++++++++++++++----- 3 files changed, 30 insertions(+), 8 deletions(-) diff --git a/include/libvirt/libvirt.h.in b/include/libvirt/libvirt.h.in index 716f7af..395a9f8 100644 --- a/include/libvirt/libvirt.h.in +++ b/include/libvirt/libvirt.h.in @@ -219,9 +219,12 @@ struct _virNodeInfo { unsigned long memory;/* memory size in kilobytes */ unsigned int cpus; /* the number of active CPUs */ unsigned int mhz; /* expected CPU frequency */ - unsigned int nodes; /* the number of NUMA cell, 1 for uniform mem access */ - unsigned int sockets;/* number of CPU socket per node */ - unsigned int cores; /* number of core per socket */ + unsigned int nodes; /* the number of NUMA cell, 1 for unusual NUMA + topologies or uniform memory access; check + capabilities XML for the actual NUMA topology */ + unsigned int sockets;/* number of CPU sockets per node if nodes == 1, + total number of CPU sockets otherwise */ + unsigned int cores; /* number of cores per socket */ unsigned int threads;/* number of threads per core */ }; diff --git a/src/nodeinfo.c b/src/nodeinfo.c index 9be2a02..acd3188 100644 --- a/src/nodeinfo.c +++ b/src/nodeinfo.c @@ -305,6 +305,16 @@ int linuxNodeInfoCPUPopulate(FILE *cpuinfo, return -1; } + /* nodeinfo->sockets is supposed to be a number of sockets per NUMA node, + * however if NUMA nodes are not composed of whole sockets, we just lie + * about the number of NUMA nodes and force apps to check capabilities XML + * for the actual NUMA topology. + */ + if (nodeinfo->sockets % nodeinfo->nodes == 0) + nodeinfo->sockets /= nodeinfo->nodes; + else + nodeinfo->nodes = 1; + return 0; } diff --git a/src/xen/xend_internal.c b/src/xen/xend_internal.c index 4450195..6ce0c3f 100644 --- a/src/xen/xend_internal.c +++ b/src/xen/xend_internal.c @@ -2497,12 +2497,21 @@ sexpr_to_xend_node_info(const struct sexpr *root, virNodeInfoPtr info) if (procs == 0) /* Sanity check in case of Xen bugs in futures..*/ return (-1); info->sockets = nr_cpus / procs; - /* Should already be fine, but for further sanity make - * sure we have at least one socket - */ - if (info->sockets == 0) - info->sockets = 1; } + + /* On systems where NUMA nodes are not composed of whole sockets either Xen + * provided us wrong number of sockets per node or we computed the wrong + * number in the compatibility code above. In such case, we compute the + * correct number of sockets on the host, lie about the number of NUMA + * nodes, and force apps to check capabilities XML for the actual NUMA + * topology. + */ + if (info->nodes * info->sockets * info->cores * info->threads + != info->cpus) { + info->nodes = 1; + info->sockets = info->cpus / (info->cores * info->threads); + } + return (0); } -- 1.7.3.2

2 3

[libvirt] [PATCH] Fix broken XML entity for '>'
by Philipp Hahn 25 Nov '10

25 Nov '10

Add missing 'g' to '>' of '<product />' source-element. Signed-off-by: Philipp Hahn <hahn(a)univention.de> --- docs/formatstorage.html.in | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-)

2 1

[libvirt] [PATCH] qemu: mark domain as updated after config updating happened
by Osier Yang 25 Nov '10

25 Nov '10

* src/qemu/qemu_driver.c (qemudDomainDetachDevice, qemudDomainAttachDevice, qemuDomainUpdateDeviceFlags) --- src/qemu/qemu_driver.c | 9 +++++++++ 1 files changed, 9 insertions(+), 0 deletions(-) diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c index f00d8a3..b55e189 100644 --- a/src/qemu/qemu_driver.c +++ b/src/qemu/qemu_driver.c @@ -8864,6 +8864,9 @@ static int qemudDomainAttachDevice(virDomainPtr dom, goto endjob; } + if (ret == 0 && !vm->updated) + vm->updated = 1; + if (!ret && virDomainSaveStatus(driver->caps, driver->stateDir, vm) < 0) ret = -1; @@ -9074,6 +9077,9 @@ static int qemuDomainUpdateDeviceFlags(virDomainPtr dom, break; } + if (ret == 0 && !vm->updated) + vm->updated = 1; + if (!ret && virDomainSaveStatus(driver->caps, driver->stateDir, vm) < 0) ret = -1; @@ -9748,6 +9754,9 @@ static int qemudDomainDetachDevice(virDomainPtr dom, "%s", _("This type of device cannot be hot unplugged")); } + if (ret == 0 && !vm->updated) + vm->updated = 1; + if (!ret && virDomainSaveStatus(driver->caps, driver->stateDir, vm) < 0) ret = -1; -- 1.7.3.2

2 2

[libvirt] [PATCH] Implementations of virDomainIsUpdated for drivers except qemu
by Osier Yang 25 Nov '10

25 Nov '10

Except LXC and UML driver, implementations of all other drivers return 0 simpley, because these drivers doesn't have config both in memory and on disk, no need to track if the domain of these drivers updated or not. Rename "xenUnifiedDomainisPersistent" to "xenUnifiedDomainIsPersistent" * esx/esx_driver.c * lxc/lxc_driver.c * opennebula/one_driver.c * openvz/openvz_driver.c * phyp/phyp_driver.c * test/test_driver.c * uml/uml_driver.c * vbox/vbox_tmpl.c * xen/xen_driver.c * xenapi/xenapi_driver.c --- src/esx/esx_driver.c | 8 ++++++-- src/lxc/lxc_driver.c | 25 ++++++++++++++++++++++++- src/opennebula/one_driver.c | 6 +++++- src/openvz/openvz_driver.c | 6 +++++- src/phyp/phyp_driver.c | 7 ++++++- src/test/test_driver.c | 7 ++++++- src/uml/uml_driver.c | 24 +++++++++++++++++++++--- src/vbox/vbox_tmpl.c | 6 +++++- src/xen/xen_driver.c | 12 +++++++++--- src/xenapi/xenapi_driver.c | 8 +++++++- 10 files changed, 94 insertions(+), 15 deletions(-) diff --git a/src/esx/esx_driver.c b/src/esx/esx_driver.c index 5c04596..8ea6219 100644 --- a/src/esx/esx_driver.c +++ b/src/esx/esx_driver.c @@ -3765,7 +3765,11 @@ esxDomainIsPersistent(virDomainPtr domain ATTRIBUTE_UNUSED) return 1; } - +static int +esxDomainIsUpdated(virDomainPtr domain ATTRIBUTE_UNUSED) +{ + return 0; +} static virDomainSnapshotPtr esxDomainSnapshotCreateXML(virDomainPtr domain, const char *xmlDesc, @@ -4360,7 +4364,7 @@ static virDriver esxDriver = { esxIsSecure, /* isSecure */ esxDomainIsActive, /* domainIsActive */ esxDomainIsPersistent, /* domainIsPersistent */ - NULL, /* domainIsUpdated */ + esxDomainIsUpdated, /* domainIsUpdated */ NULL, /* cpuCompare */ NULL, /* cpuBaseline */ NULL, /* domainGetJobInfo */ diff --git a/src/lxc/lxc_driver.c b/src/lxc/lxc_driver.c index 886286b..eb58086 100644 --- a/src/lxc/lxc_driver.c +++ b/src/lxc/lxc_driver.c @@ -325,6 +325,29 @@ cleanup: return ret; } +static int lxcDomainIsUpdated(virDomainPtr dom) +{ + lxc_driver_t *driver = dom->conn->privateData; + virDomainObjPtr obj; + int ret = -1; + + lxcDriverLock(driver); + obj = virDomainFindByUUID(&driver->domains, dom->uuid); + lxcDriverUnlock(driver); + if (!obj) { + char uuidstr[VIR_UUID_STRING_BUFLEN]; + virUUIDFormat(dom->uuid, uuidstr); + lxcError(VIR_ERR_NO_DOMAIN, + _("No domain with matching uuid '%s'"), uuidstr); + goto cleanup; + } + ret = obj->updated; + +cleanup: + if (obj) + virDomainObjUnlock(obj); + return ret; +} static int lxcListDomains(virConnectPtr conn, int *ids, int nids) { lxc_driver_t *driver = conn->privateData; @@ -2882,7 +2905,7 @@ static virDriver lxcDriver = { lxcIsSecure, /* isSecure */ lxcDomainIsActive, /* domainIsActive */ lxcDomainIsPersistent, /* domainIsPersistent */ - NULL, /* domainIsUpdated */ + lxcDomainIsUpdated, /* domainIsUpdated */ NULL, /* cpuCompare */ NULL, /* cpuBaseline */ NULL, /* domainGetJobInfo */ diff --git a/src/opennebula/one_driver.c b/src/opennebula/one_driver.c index 4fe7f9b..c31f132 100644 --- a/src/opennebula/one_driver.c +++ b/src/opennebula/one_driver.c @@ -106,6 +106,10 @@ static int oneIsSecure(virConnectPtr conn ATTRIBUTE_UNUSED) return 0; } +static int oneIsUpdated(virConnectPtr conn ATTRIBUTE_UNUSED) +{ + return 0; +} static virDomainPtr oneDomainLookupByID(virConnectPtr conn, int id) @@ -800,7 +804,7 @@ static virDriver oneDriver = { oneIsSecure, /* isSecure */ NULL, /* domainIsActive */ NULL, /* domainIsPersistent */ - NULL, /* domainIsUpdated */ + oneIsUpdated, /* domainIsUpdated */ NULL, /* cpuCompare */ NULL, /* cpuBaseline */ NULL, /* domainGetJobInfo */ diff --git a/src/openvz/openvz_driver.c b/src/openvz/openvz_driver.c index 5089e37..807bb7c 100644 --- a/src/openvz/openvz_driver.c +++ b/src/openvz/openvz_driver.c @@ -459,6 +459,10 @@ cleanup: return ret; } +static int openvzDomainIsUpdated(virDomainPtr dom ATTRIBUTE_UNUSED) +{ + return 0; +} static char *openvzDomainDumpXML(virDomainPtr dom, int flags) { struct openvz_driver *driver = dom->conn->privateData; @@ -1670,7 +1674,7 @@ static virDriver openvzDriver = { openvzIsSecure, openvzDomainIsActive, openvzDomainIsPersistent, - NULL, /* domainIsUpdated */ + openvzDomainIsUpdated, /* domainIsUpdated */ NULL, /* cpuCompare */ NULL, /* cpuBaseline */ NULL, /* domainGetJobInfo */ diff --git a/src/phyp/phyp_driver.c b/src/phyp/phyp_driver.c index 24b426e..08faa9b 100644 --- a/src/phyp/phyp_driver.c +++ b/src/phyp/phyp_driver.c @@ -1277,6 +1277,11 @@ phypIsSecure(virConnectPtr conn ATTRIBUTE_UNUSED) return 1; } +static int +phypIsSecure(virConnectPtr conn ATTRIBUTE_UNUSED) +{ + return 0; +} /* return the lpar_id given a name and a managed system name */ static int @@ -4021,7 +4026,7 @@ static virDriver phypDriver = { phypIsSecure, /* isSecure */ NULL, /* domainIsActive */ NULL, /* domainIsPersistent */ - NULL, /* domainIsUpdated */ + phypIsUpdated, /* domainIsUpdated */ NULL, /* cpuCompare */ NULL, /* cpuBaseline */ NULL, /* domainGetJobInfo */ diff --git a/src/test/test_driver.c b/src/test/test_driver.c index b6838c2..ddff160 100644 --- a/src/test/test_driver.c +++ b/src/test/test_driver.c @@ -1295,6 +1295,11 @@ cleanup: return ret; } +static int testDomainIsUpdated(virDomainPtr dom ATTRIBUTE_UNUSED) +{ + return 0; +} + static virDomainPtr testDomainCreateXML(virConnectPtr conn, const char *xml, unsigned int flags) @@ -5413,7 +5418,7 @@ static virDriver testDriver = { testIsSecure, /* isEncrypted */ testDomainIsActive, /* domainIsActive */ testDomainIsPersistent, /* domainIsPersistent */ - NULL, /* domainIsUpdated */ + testDomainIsUpdated, /* domainIsUpdated */ NULL, /* cpuCompare */ NULL, /* cpuBaseline */ NULL, /* domainGetJobInfo */ diff --git a/src/uml/uml_driver.c b/src/uml/uml_driver.c index 6c28c76..26b6b50 100644 --- a/src/uml/uml_driver.c +++ b/src/uml/uml_driver.c @@ -1213,8 +1213,6 @@ cleanup: virDomainObjUnlock(obj); return ret; } - - static int umlDomainIsPersistent(virDomainPtr dom) { struct uml_driver *driver = dom->conn->privateData; @@ -1236,6 +1234,26 @@ cleanup: return ret; } +static int umlDomainIsUpdated(virDomainPtr dom) +{ + struct uml_driver *driver = dom->conn->privateData; + virDomainObjPtr obj; + int ret = -1; + + umlDriverLock(driver); + obj = virDomainFindByUUID(&driver->domains, dom->uuid); + umlDriverUnlock(driver); + if (!obj) { + umlReportError(VIR_ERR_NO_DOMAIN, NULL); + goto cleanup; + } + ret = obj->updated; + +cleanup: + if (obj) + virDomainObjUnlock(obj); + return ret; +} static int umlGetVersion(virConnectPtr conn, unsigned long *version) { struct uml_driver *driver = conn->privateData; @@ -2248,7 +2266,7 @@ static virDriver umlDriver = { umlIsSecure, /* isSecure */ umlDomainIsActive, /* domainIsActive */ umlDomainIsPersistent, /* domainIsPersistent */ - NULL, /* domainIsUpdated */ + umlDomainIsUpdated, /* domainIsUpdated */ NULL, /* cpuCompare */ NULL, /* cpuBaseline */ NULL, /* domainGetJobInfo */ diff --git a/src/vbox/vbox_tmpl.c b/src/vbox/vbox_tmpl.c index 0a7a247..ada71b4 100644 --- a/src/vbox/vbox_tmpl.c +++ b/src/vbox/vbox_tmpl.c @@ -1347,6 +1347,10 @@ static int vboxDomainIsPersistent(virDomainPtr dom ATTRIBUTE_UNUSED) { } +static int vboxDomainIsUpdated(virDomainPtr dom ATTRIBUTE_UNUSED) { + return 0; +} + static int vboxDomainSuspend(virDomainPtr dom) { VBOX_OBJECT_CHECK(dom->conn, int, -1); IMachine *machine = NULL; @@ -8451,7 +8455,7 @@ virDriver NAME(Driver) = { vboxIsSecure, /* isSecure */ vboxDomainIsActive, /* domainIsActive */ vboxDomainIsPersistent, /* domainIsPersistent */ - NULL, /* domainIsUpdated */ + vboxDomainIsUpdated, /* domainIsUpdated */ NULL, /* cpuCompare */ NULL, /* cpuBaseline */ NULL, /* domainGetJobInfo */ diff --git a/src/xen/xen_driver.c b/src/xen/xen_driver.c index 959cc7d..4c11b11 100644 --- a/src/xen/xen_driver.c +++ b/src/xen/xen_driver.c @@ -740,7 +740,7 @@ xenUnifiedDomainIsActive(virDomainPtr dom) } static int -xenUnifiedDomainisPersistent(virDomainPtr dom) +xenUnifiedDomainIsPersistent(virDomainPtr dom) { GET_PRIVATE(dom->conn); virDomainPtr currdom = NULL; @@ -791,6 +791,12 @@ done: } static int +xenUnifiedDomainIsUpdated(virDomainPtr dom ATTRIBUTE_UNUSED) +{ + return 0; +} + +static int xenUnifiedDomainSuspend (virDomainPtr dom) { GET_PRIVATE(dom->conn); @@ -2069,8 +2075,8 @@ static virDriver xenUnifiedDriver = { xenUnifiedIsEncrypted, /* isEncrypted */ xenUnifiedIsSecure, /* isSecure */ xenUnifiedDomainIsActive, /* domainIsActive */ - xenUnifiedDomainisPersistent, /* domainIsPersistent */ - NULL, /* domainIsUpdated */ + xenUnifiedDomainIsPersistent, /* domainIsPersistent */ + xenUnifiedDomainIsUpdated, /* domainIsUpdated */ NULL, /* cpuCompare */ NULL, /* cpuBaseline */ NULL, /* domainGetJobInfo */ diff --git a/src/xenapi/xenapi_driver.c b/src/xenapi/xenapi_driver.c index dec2d25..6fff276 100644 --- a/src/xenapi/xenapi_driver.c +++ b/src/xenapi/xenapi_driver.c @@ -1745,6 +1745,12 @@ xenapiNodeGetFreeMemory (virConnectPtr conn) return freeMem; } +static int +xenapiDomainIsUpdated(virDomainPtr dom ATTRIBUTE_UNUSED) +{ + return 0; +} + /* * xenapiNodeGetCellsFreeMemory * @@ -1847,7 +1853,7 @@ static virDriver xenapiDriver = { NULL, /* isSecure */ NULL, /* domainIsActive */ NULL, /* domainIsPersistent */ - NULL, /* domainIsUpdated */ + xenapiDomainIsUpdated, /* domainIsUpdated */ NULL, /* cpuCompare */ NULL, /* cpuBaseline */ NULL, /* domainGetJobInfo */ -- 1.7.3.2

2 2

[libvirt] [PATCH] build: enforce files.h usage
by Eric Blake 24 Nov '10

24 Nov '10

* cfg.mk (sc_prohibit_close): New syntax-check rule. * src/util/pci.c (pciWaitForDeviceCleanup): Fix violation. * .x-sc_prohibit_close: New exceptions. * Makefile.am (EXTRA_DIST): Distribute new file. --- As promised, here's my followup to Stefan's recent close() cleanups, which will help us avoid further regressions. .x-sc_prohibit_close | 3 +++ Makefile.am | 1 + cfg.mk | 9 +++++++++ src/util/pci.c | 2 +- 4 files changed, 14 insertions(+), 1 deletions(-) create mode 100644 .x-sc_prohibit_close diff --git a/.x-sc_prohibit_close b/.x-sc_prohibit_close new file mode 100644 index 0000000..348200c --- /dev/null +++ b/.x-sc_prohibit_close @@ -0,0 +1,3 @@ +^docs/.* +^HACKING$ +^src/util/files.c$ diff --git a/Makefile.am b/Makefile.am index d3f8876..bf1b49b 100644 --- a/Makefile.am +++ b/Makefile.am @@ -26,6 +26,7 @@ EXTRA_DIST = \ .x-sc_bindtextdomain \ .x-sc_m4_quote_check \ .x-sc_prohibit_asprintf \ + .x-sc_prohibit_close \ .x-sc_prohibit_empty_lines_at_EOF \ .x-sc_prohibit_gethostby \ .x-sc_prohibit_gethostname \ diff --git a/cfg.mk b/cfg.mk index 0851f44..963c7db 100644 --- a/cfg.mk +++ b/cfg.mk @@ -231,6 +231,15 @@ sc_avoid_write: halt='consider using safewrite instead of write' \ $(_sc_search_regexp) +# Avoid functions that can lead to double-close bugs. +sc_prohibit_close: + @prohibit='\<[f]close *\(' \ + halt='use VIR_{FORCE_}[F]CLOSE instead of [f]close' \ + $(_sc_search_regexp) + @prohibit='\<fdopen *\(' \ + halt='use VIR_FDOPEN instead of fdopen' \ + $(_sc_search_regexp) + # Similar to the gnulib maint.mk rule for sc_prohibit_strcmp # Use STREQLEN or STRPREFIX rather than comparing strncmp == 0, or != 0. sc_prohibit_strncmp: diff --git a/src/util/pci.c b/src/util/pci.c index bd8c6c5..d38cefa 100644 --- a/src/util/pci.c +++ b/src/util/pci.c @@ -1095,7 +1095,7 @@ pciWaitForDeviceCleanup(pciDevice *dev, const char *matcher) } } - fclose(fp); + VIR_FORCE_FCLOSE(fp); return ret; } -- 1.7.3.2

2 2

[libvirt] [PATCH] maint: ensure syntax check exceptions are distributed
by Eric Blake 24 Nov '10

24 Nov '10

* Makefile.am (EXTRA_DIST): Factor exceptions files... (syntax_check_excpetions): into new list. Include recently added exceptions. * cfg.mk (sc_x_sc_dist_check): New check, copied from coreutils. --- Makefile.am | 19 +++++++++++++------ cfg.mk | 13 +++++++++++++ 2 files changed, 26 insertions(+), 6 deletions(-) diff --git a/Makefile.am b/Makefile.am index f3dbd6d..0a3c24f 100644 --- a/Makefile.am +++ b/Makefile.am @@ -14,16 +14,13 @@ XML_EXAMPLES = \ $(patsubst $(srcdir)/%,%,$(wildcard $(addprefix $(srcdir)/examples/xml/, \ test/*.xml storage/*.xml))) -EXTRA_DIST = \ - ChangeLog-old \ - libvirt.spec libvirt.spec.in \ - mingw32-libvirt.spec.in \ - libvirt.pc libvirt.pc.in \ - autobuild.sh \ +syntax_check_exceptions = \ .x-sc_avoid_ctype_macros \ .x-sc_avoid_if_before_free \ .x-sc_avoid_write \ .x-sc_m4_quote_check \ + .x-sc_po_check \ + .x-sc_prohibit_always_true_header_tests \ .x-sc_prohibit_asprintf \ .x-sc_prohibit_empty_lines_at_EOF \ .x-sc_prohibit_gethostby \ @@ -32,6 +29,7 @@ EXTRA_DIST = \ .x-sc_prohibit_have_config_h \ .x-sc_prohibit_HAVE_MBRTOWC \ .x-sc_prohibit_nonreentrant \ + .x-sc_prohibit_readlink \ .x-sc_prohibit_strcmp \ .x-sc_prohibit_strcmp_and_strncmp \ .x-sc_prohibit_strncpy \ @@ -40,9 +38,18 @@ EXTRA_DIST = \ .x-sc_require_config_h \ .x-sc_require_config_h_first \ .x-sc_trailing_blank \ + .x-sc_unmarked_diagnostics + +EXTRA_DIST = \ + ChangeLog-old \ + libvirt.spec libvirt.spec.in \ + mingw32-libvirt.spec.in \ + libvirt.pc libvirt.pc.in \ + autobuild.sh \ Makefile.nonreentrant \ autogen.sh \ examples/domain-events/events-python \ + $(syntax_check_exceptions) \ $(XML_EXAMPLES) pkgconfigdir = $(libdir)/pkgconfig diff --git a/cfg.mk b/cfg.mk index 072673e..d47af80 100644 --- a/cfg.mk +++ b/cfg.mk @@ -434,6 +434,19 @@ sc_prohibit_gettext_markup: halt='do not mark these strings for translation' \ $(_sc_search_regexp) +# Ensure that the syntax_check_exceptions file list in Makefile.am +# stays in sync with corresponding files in the repository. +sce = syntax_check_exceptions +sc_x_sc_dist_check: + @test "$$( ($(VC_LIST) | sed -n '/\.x-sc_/p' \ + | sed 's|^$(_dot_escaped_srcdir)/||'; \ + sed -n '/^$(sce) =[ ]*\\$$/,/[^\]$$/p' \ + $(srcdir)/Makefile.am \ + | sed 's/^ *//;/^$(sce) =/d' \ + | tr -s '\012\\' ' ' | fmt -1 \ + ) | sort | uniq -u)" \ + && { echo 'Makefile.am: $(sce) mismatch' >&2; exit 1; } || :; + # We don't use this feature of maint.mk. prev_version_file = /dev/null -- 1.7.3.2

2 2

[libvirt] [PATCH] Always close drivers when a virConnectPtr is released
by Matthias Bolte 24 Nov '10

24 Nov '10

virConnectClose calls virUnrefConnect which in turn closes all open drivers when the refcount of that connection dropped to zero. This works fine when you free all other objects that hold a ref to the connection before you close it, because in this case virUnrefConnect is the one that removes the last ref to the connection. But it doesn't work when you close the connection first before freeing the other objects. This is because the other virUnref* functions call virReleaseConnect when they detect that the connection's refcount dropped to zero. In this case another virUnref* function (different from virUnrefConnect) removes the last ref to the connection. This results in not closing the open drivers and leaking things that should have been cleaned up in the driver close functions. To fix this move the driver close calls to virReleaseConnect. --- src/datatypes.c | 47 +++++++++++++++++++++++------------------------ 1 files changed, 23 insertions(+), 24 deletions(-) diff --git a/src/datatypes.c b/src/datatypes.c index 46009ae..9817538 100644 --- a/src/datatypes.c +++ b/src/datatypes.c @@ -247,6 +247,29 @@ failed: static void virReleaseConnect(virConnectPtr conn) { DEBUG("release connection %p", conn); + + /* make sure to release the connection lock before we call the + * close() callbacks, otherwise we will deadlock if an error + * is raised by any of the callbacks */ + virMutexUnlock(&conn->lock); + + if (conn->networkDriver) + conn->networkDriver->close (conn); + if (conn->interfaceDriver) + conn->interfaceDriver->close (conn); + if (conn->storageDriver) + conn->storageDriver->close (conn); + if (conn->deviceMonitor) + conn->deviceMonitor->close (conn); + if (conn->secretDriver) + conn->secretDriver->close (conn); + if (conn->nwfilterDriver) + conn->nwfilterDriver->close (conn); + if (conn->driver) + conn->driver->close (conn); + + virMutexLock(&conn->lock); + if (conn->domains != NULL) virHashFree(conn->domains, (virHashDeallocator) virDomainFreeName); if (conn->networks != NULL) @@ -295,30 +318,6 @@ virUnrefConnect(virConnectPtr conn) { conn->refs--; refs = conn->refs; if (refs == 0) { - /* make sure to release the connection lock before we call the - * close() callbacks, otherwise we will deadlock if an error - * is raised by any of the callbacks - */ - virMutexUnlock(&conn->lock); - if (conn->networkDriver) - conn->networkDriver->close (conn); - if (conn->interfaceDriver) - conn->interfaceDriver->close (conn); - if (conn->storageDriver) - conn->storageDriver->close (conn); - if (conn->deviceMonitor) - conn->deviceMonitor->close (conn); - if (conn->secretDriver) - conn->secretDriver->close (conn); - if (conn->nwfilterDriver) - conn->nwfilterDriver->close (conn); - if (conn->driver) - conn->driver->close (conn); - - /* reacquire the connection lock since virReleaseConnect expects - * it to already be held - */ - virMutexLock(&conn->lock); virReleaseConnect(conn); /* Already unlocked mutex */ return (0); -- 1.7.0.4

2 2

[libvirt] ruby-libvirt issue
by Jaromír Červenka 24 Nov '10

24 Nov '10

Good evening, could anybody explain me this, please? divinus:~ # virsh error: cannot recv data: : Connection reset by peer error: failed to connect to the hypervisor divinus:~ # I am trying to imlement Chris's ruby-libvirt to my Ruby on Rails application. First few connection to libvirt daemon (thru ruby-libvirt API) from my app are ok, but then somethings happend and it's not possible to connect anymore until I restart libvirt daemon manually by init.d script or until I restart apache (or WEBrick). And it's not possible connect to virsh from shell also! See messages above. When I try ruby-libvirt from bare Ruby script, everythig is fine - doesn't matter how many times I connect. It's strange. Does anybody have experience with ruby-libvirt in RoR application? Thank you. Jaromir.

6 11

[libvirt] devel guide bug on listing domains
by Eric Blake 24 Nov '10

24 Nov '10

On IRC, it was pointed out that: http://libvirt.org/guide/html-single/#Application_Development_Guide-Guest_D… it was pointed out that example 4.5 (section 4.2 Listing domains) incorrectly uses virConnectListDomains instead of the intended virConnectListDefinedDomains. I'm not sure where the source to this document is kept, or I would have pushed the obvious patch. -- Eric Blake eblake(a)redhat.com +1-801-349-2682 Libvirt virtualization library http://libvirt.org

2 2

[libvirt] [PATCH] Fix memory leaks in audit & VirtualBox code
by Daniel P. Berrange 24 Nov '10

24 Nov '10

* src/util/virtaudit.c: Free audit string * src/vbox/vbox_XPCOMCGlue.c: Free library name --- src/util/virtaudit.c | 6 +++++- src/vbox/vbox_XPCOMCGlue.c | 1 + 2 files changed, 6 insertions(+), 1 deletions(-) diff --git a/src/util/virtaudit.c b/src/util/virtaudit.c index b630fce..33be4d9 100644 --- a/src/util/virtaudit.c +++ b/src/util/virtaudit.c @@ -32,6 +32,7 @@ #include "virtaudit.h" #include "util.h" #include "files.h" +#include "memory.h" /* Provide the macros in case the header file is old. FIXME: should be removed. */ @@ -110,8 +111,10 @@ void virAuditSend(const char *file ATTRIBUTE_UNUSED, const char *func, } #if HAVE_AUDIT - if (auditfd < 0) + if (auditfd < 0) { + VIR_FREE(str); return; + } if (str) { static const int record_types[] = { @@ -128,6 +131,7 @@ void virAuditSend(const char *file ATTRIBUTE_UNUSED, const char *func, VIR_WARN("Failed to send audit message %s: %s", NULLSTR(str), virStrerror(errno, ebuf, sizeof ebuf)); } + VIR_FREE(str); } #endif } diff --git a/src/vbox/vbox_XPCOMCGlue.c b/src/vbox/vbox_XPCOMCGlue.c index 15a9622..d73e799 100644 --- a/src/vbox/vbox_XPCOMCGlue.c +++ b/src/vbox/vbox_XPCOMCGlue.c @@ -98,6 +98,7 @@ static int tryLoadOne(const char *dir, bool setAppHome, bool ignoreMissing) VIR_ERROR(_("Libaray '%s' doesn't exist"), name); } + VIR_FREE(name); return -1; } } else { -- 1.7.2.3

2 1

[libvirt] [PATCH] 802.1Qbg: use pre-associate state at beginning of incoming migration
by Stefan Berger 24 Nov '10

24 Nov '10

This patch introduces the usage of the pre-associate state of the IEEE 802.1Qbg standard on incoming VM migration on the target host. It is in response to bugzilla entry 632750. https://bugzilla.redhat.com/show_bug.cgi?id=632750 For being able to differentiate the exact reason as to why a macvtap device is being created, either due to a VM creation or an incoming VM migration, I needed to pass that reason as a parameter from wherever qemudStartVMDaemon is being called in order to determine whether to send an ASSOCIATE (VM creation) or a PRE-ASSOCIATE (incoming VM migration) towards lldpad. I am also fixing problem with the virsh domainxml-to-native call on the way. Gerhard successfully tested the patch with a recent blade network 802.1Qbg-compliant switch. The patch should not have any side-effects on the 802.1Qbh support in libvirt, but Scott (cc'ed) may want to verify this. Signed-off-by: Stefan Berger <stefanb(a)us.ibm.com> Signed-off-by: Gerhard Stenzel <gerhard.stenzel(a)de.ibm.com> --- src/libvirt_macvtap.syms | 2 + src/qemu/qemu_conf.c | 12 +++++-- src/qemu/qemu_conf.h | 7 +++- src/qemu/qemu_driver.c | 72 +++++++++++++++++++++++++++++++++++++---------- src/util/macvtap.c | 54 ++++++++++++++++++++++++++++++----- src/util/macvtap.h | 20 +++++++++++-- 6 files changed, 137 insertions(+), 30 deletions(-) Index: libvirt-acl/src/qemu/qemu_conf.c =================================================================== --- libvirt-acl.orig/src/qemu/qemu_conf.c +++ libvirt-acl/src/qemu/qemu_conf.c @@ -1640,7 +1640,8 @@ qemudPhysIfaceConnect(virConnectPtr conn struct qemud_driver *driver, virDomainNetDefPtr net, unsigned long long qemuCmdFlags, - const unsigned char *vmuuid) + const unsigned char *vmuuid, + enum vmOperation vmop) { int rc; #if WITH_MACVTAP @@ -1654,7 +1655,8 @@ qemudPhysIfaceConnect(virConnectPtr conn rc = openMacvtapTap(net->ifname, net->mac, net->data.direct.linkdev, net->data.direct.mode, vnet_hdr, vmuuid, -&net->data.direct.virtPortProfile,&res_ifname); +&net->data.direct.virtPortProfile,&res_ifname, + vmop); if (rc>= 0) { VIR_FREE(net->ifname); net->ifname = res_ifname; @@ -3951,7 +3953,8 @@ int qemudBuildCommandLine(virConnectPtr int **vmfds, int *nvmfds, const char *migrateFrom, - virDomainSnapshotObjPtr current_snapshot) + virDomainSnapshotObjPtr current_snapshot, + enum vmOperation vmop) { int i; char memory[50]; @@ -4794,7 +4797,8 @@ int qemudBuildCommandLine(virConnectPtr } else if (net->type == VIR_DOMAIN_NET_TYPE_DIRECT) { int tapfd = qemudPhysIfaceConnect(conn, driver, net, qemuCmdFlags, - def->uuid); + def->uuid, + vmop); if (tapfd< 0) goto error; Index: libvirt-acl/src/qemu/qemu_conf.h =================================================================== --- libvirt-acl.orig/src/qemu/qemu_conf.h +++ libvirt-acl/src/qemu/qemu_conf.h @@ -40,6 +40,7 @@ # include "cpu_conf.h" # include "driver.h" # include "bitmap.h" +# include "macvtap.h" # define qemudDebug(fmt, ...) do {} while(0) @@ -238,7 +239,8 @@ int qemudBuildCommandLine int **vmfds, int *nvmfds, const char *migrateFrom, - virDomainSnapshotObjPtr current_snapshot) + virDomainSnapshotObjPtr current_snapshot, + enum vmOperation vmop) ATTRIBUTE_NONNULL(1); /* With vlan == -1, use netdev syntax, else old hostnet */ @@ -317,7 +319,8 @@ int qemudPhysIfaceConnect(virConnectPtr struct qemud_driver *driver, virDomainNetDefPtr net, unsigned long long qemuCmdFlags, - const unsigned char *vmuuid); + const unsigned char *vmuuid, + enum vmOperation vmop); int qemudProbeMachineTypes (const char *binary, virCapsGuestMachinePtr **machines, Index: libvirt-acl/src/qemu/qemu_driver.c =================================================================== --- libvirt-acl.orig/src/qemu/qemu_driver.c +++ libvirt-acl/src/qemu/qemu_driver.c @@ -163,7 +163,8 @@ static int qemudStartVMDaemon(virConnect const char *migrateFrom, bool start_paused, int stdin_fd, - const char *stdin_path); + const char *stdin_path, + enum vmOperation vmop); static void qemudShutdownVMDaemon(struct qemud_driver *driver, virDomainObjPtr vm, @@ -3864,7 +3865,8 @@ static int qemudStartVMDaemon(virConnect const char *migrateFrom, bool start_paused, int stdin_fd, - const char *stdin_path) { + const char *stdin_path, + enum vmOperation vmop) { const char **argv = NULL, **tmp; const char **progenv = NULL; int i, ret, runflags; @@ -4065,7 +4067,7 @@ static int qemudStartVMDaemon(virConnect if (qemudBuildCommandLine(conn, driver, vm->def, priv->monConfig, priv->monJSON, qemuCmdFlags,&argv,&progenv, &vmfds,&nvmfds, migrateFrom, - vm->current_snapshot)< 0) + vm->current_snapshot, vmop)< 0) goto cleanup; if (qemuDomainSnapshotSetInactive(vm, driver->snapshotDir)< 0) @@ -4854,7 +4856,7 @@ static virDomainPtr qemudDomainCreate(vi if (qemudStartVMDaemon(conn, driver, vm, NULL, (flags& VIR_DOMAIN_START_PAUSED) != 0, - -1, NULL)< 0) { + -1, NULL, VM_OP_CREATE)< 0) { qemuDomainStartAudit(vm, "booted", false); if (qemuDomainObjEndJob(vm)> 0) virDomainRemoveInactive(&driver->domains, @@ -6997,7 +6999,8 @@ qemudDomainSaveImageStartVM(virConnectPt } /* Set the migration source and start it up. */ - ret = qemudStartVMDaemon(conn, driver, vm, "stdio", true, fd, path); + ret = qemudStartVMDaemon(conn, driver, vm, "stdio", true, fd, path, + VM_OP_RESTORE); if (intermediate_pid != -1) { /* Wait for intermediate process to exit */ @@ -7316,14 +7319,15 @@ static char *qemuDomainXMLToNative(virCo if (!def) goto cleanup; - /* Since we're just exporting args, we can't do bridge/network - * setups, since libvirt will normally create TAP devices + /* Since we're just exporting args, we can't do bridge/network/direct + * setups, since libvirt will normally create TAP/macvtap devices * directly. We convert those configs into generic 'ethernet' * config and assume the user has suitable 'ifup-qemu' scripts */ for (i = 0 ; i< def->nnets ; i++) { virDomainNetDefPtr net = def->nets[i]; - if (net->type == VIR_DOMAIN_NET_TYPE_NETWORK) { + if (net->type == VIR_DOMAIN_NET_TYPE_NETWORK || + net->type == VIR_DOMAIN_NET_TYPE_DIRECT) { VIR_FREE(net->data.network.name); memset(net, 0, sizeof *net); @@ -7379,7 +7383,8 @@ static char *qemuDomainXMLToNative(virCo &monConfig, 0, qemuCmdFlags, &retargv,&retenv, NULL, NULL, /* Don't want it to create TAP devices */ - NULL, NULL)< 0) { + NULL, NULL, + VM_OP_NO_OP)< 0) { goto cleanup; } @@ -7466,7 +7471,8 @@ static int qemudDomainObjStart(virConnec goto cleanup; } - ret = qemudStartVMDaemon(conn, driver, vm, NULL, start_paused, -1, NULL); + ret = qemudStartVMDaemon(conn, driver, vm, NULL, start_paused, -1, NULL, + VM_OP_CREATE); qemuDomainStartAudit(vm, "booted", ret>= 0); if (ret>= 0) { virDomainEventPtr event = @@ -8309,7 +8315,8 @@ static int qemudDomainAttachNetDevice(vi if ((tapfd = qemudPhysIfaceConnect(conn, driver, net, qemuCmdFlags, - vm->def->uuid))< 0) + vm->def->uuid, + VM_OP_CREATE))< 0) return -1; } @@ -10983,7 +10990,7 @@ qemudDomainMigratePrepareTunnel(virConne * -incoming unix:/path/to/file or exec:nc -U /path/to/file */ internalret = qemudStartVMDaemon(dconn, driver, vm, migrateFrom, true, - -1, NULL); + -1, NULL, VM_OP_MIGRATE_IN_START); VIR_FREE(migrateFrom); if (internalret< 0) { qemuDomainStartAudit(vm, "migrated", false); @@ -11229,7 +11236,7 @@ qemudDomainMigratePrepare2 (virConnectPt */ snprintf (migrateFrom, sizeof (migrateFrom), "tcp:0.0.0.0:%d", this_port); if (qemudStartVMDaemon (dconn, driver, vm, migrateFrom, true, - -1, NULL)< 0) { + -1, NULL, VM_OP_MIGRATE_IN_START)< 0) { qemuDomainStartAudit(vm, "migrated", false); /* Note that we don't set an error here because qemudStartVMDaemon * should have already done that. @@ -11844,6 +11851,41 @@ cleanup: return ret; } +static void +qemudVPAssociatePortProfiles(virDomainDefPtr def) { + int i; + int last_good_net = -1; + virDomainNetDefPtr net; + + for (i = 0; i< def->nnets; i++) { + net = def->nets[i]; + if (net->type == VIR_DOMAIN_NET_TYPE_DIRECT) { + if (vpAssociatePortProfileId(net->ifname, + net->mac, + net->data.direct.linkdev, +&net->data.direct.virtPortProfile, + def->uuid, + VM_OP_MIGRATE_IN_FINISH) != 0) + goto err_exit; + } + last_good_net = i; + } + + return; + +err_exit: + for (i = 0; i< last_good_net; i++) { + net = def->nets[i]; + if (net->type == VIR_DOMAIN_NET_TYPE_DIRECT) { + vpDisassociatePortProfileId(net->ifname, + net->mac, + net->data.direct.linkdev, +&net->data.direct.virtPortProfile, + VM_OP_MIGRATE_IN_FINISH); + } + } +} + /* Finish is the third and final step, and it runs on the destination host. */ static virDomainPtr qemudDomainMigrateFinish2 (virConnectPtr dconn, @@ -11904,6 +11946,8 @@ qemudDomainMigrateFinish2 (virConnectPtr goto cleanup; } + qemudVPAssociatePortProfiles(vm->def); + if (flags& VIR_MIGRATE_PERSIST_DEST) { if (vm->persistent) newVM = 0; @@ -12796,7 +12840,7 @@ static int qemuDomainRevertToSnapshot(vi goto endjob; rc = qemudStartVMDaemon(snapshot->domain->conn, driver, vm, NULL, - false, -1, NULL); + false, -1, NULL, VM_OP_CREATE); qemuDomainStartAudit(vm, "from-snapshot", rc>= 0); if (qemuDomainSnapshotSetInactive(vm, driver->snapshotDir)< 0) goto endjob; Index: libvirt-acl/src/util/macvtap.c =================================================================== --- libvirt-acl.orig/src/util/macvtap.c +++ libvirt-acl/src/util/macvtap.c @@ -77,9 +77,22 @@ # define LLDPAD_PID_FILE "/var/run/lldpad.pid" +static const char *vmOpStr[] = { + [VM_OP_CREATE] = "create", + [VM_OP_SAVE] = "save", + [VM_OP_RESTORE] = "restore", + [VM_OP_DESTROY] = "destroy", + [VM_OP_MIGRATE_OUT] = "migrate out", + [VM_OP_MIGRATE_IN_START] = "migrate in start", + [VM_OP_MIGRATE_IN_FINISH] = "migrate in finish", + [VM_OP_NO_OP] = "no-op" +}; + + enum virVirtualPortOp { ASSOCIATE = 0x1, DISASSOCIATE = 0x2, + PREASSOCIATE = 0x3, }; @@ -551,7 +564,8 @@ openMacvtapTap(const char *tgifname, int vnet_hdr, const unsigned char *vmuuid, virVirtualPortProfileParamsPtr virtPortProfile, - char **res_ifname) + char **res_ifname, + enum vmOperation vmOp) { const char *type = "macvtap"; int c, rc; @@ -563,6 +577,8 @@ openMacvtapTap(const char *tgifname, *res_ifname = NULL; + VIR_DEBUG("%s: VM OPERATION: %s", __FUNCTION__, vmOpStr[vmOp]); + if (tgifname) { if(ifaceGetIndex(false, tgifname,&ifindex) == 0) { if (STRPREFIX(tgifname, @@ -601,7 +617,7 @@ create_name: macaddress, linkdev, virtPortProfile, - vmuuid) != 0) { + vmuuid, vmOp) != 0) { rc = -1; goto link_del_exit; } @@ -634,7 +650,8 @@ disassociate_exit: vpDisassociatePortProfileId(cr_ifname, macaddress, linkdev, - virtPortProfile); + virtPortProfile, + vmOp); link_del_exit: link_del(cr_ifname); @@ -662,7 +679,8 @@ delMacvtap(const char *ifname, if (ifname) { vpDisassociatePortProfileId(ifname, macaddr, linkdev, - virtPortProfile); + virtPortProfile, + VM_OP_DESTROY); link_del(ifname); } } @@ -1320,6 +1338,9 @@ doPortProfileOp8021Qbg(const char *ifnam portVsi.vsi_type_id[0] = virtPort->u.virtPort8021Qbg.typeID; switch (virtPortOp) { + case PREASSOCIATE: + op = PORT_REQUEST_PREASSOCIATE; + break; case ASSOCIATE: op = PORT_REQUEST_ASSOCIATE; break; @@ -1484,6 +1505,7 @@ err_exit: * @macvtap_ifname: The name of the macvtap device * @virtPort: pointer to the object holding port profile parameters * @vmuuid : the UUID of the virtual machine + * @vmOp : The VM operation (i.e., create, no-op) * * Associate a port on a swtich with a profile. This function * may notify a kernel driver or an external daemon to run @@ -1499,13 +1521,19 @@ vpAssociatePortProfileId(const char *mac const unsigned char *macvtap_macaddr, const char *linkdev, const virVirtualPortProfileParamsPtr virtPort, - const unsigned char *vmuuid) + const unsigned char *vmuuid, + enum vmOperation vmOp) { int rc = 0; VIR_DEBUG("Associating port profile '%p' on link device '%s'", virtPort, macvtap_ifname); + VIR_DEBUG("%s: VM OPERATION: %s", __FUNCTION__, vmOpStr[vmOp]); + + if (vmOp == VM_OP_NO_OP) + return 0; + switch (virtPort->virtPortType) { case VIR_VIRTUALPORT_NONE: case VIR_VIRTUALPORT_TYPE_LAST: @@ -1513,10 +1541,16 @@ vpAssociatePortProfileId(const char *mac case VIR_VIRTUALPORT_8021QBG: rc = doPortProfileOp8021Qbg(macvtap_ifname, macvtap_macaddr, - virtPort, ASSOCIATE); + virtPort, + (vmOp == VM_OP_MIGRATE_IN_START) + ? PREASSOCIATE + : ASSOCIATE); break; case VIR_VIRTUALPORT_8021QBH: + /* avoid associating twice */ + if (vmOp == VM_OP_MIGRATE_IN_FINISH) + break; rc = doPortProfileOp8021Qbh(linkdev, virtPort, vmuuid, ASSOCIATE); @@ -1542,13 +1576,16 @@ int vpDisassociatePortProfileId(const char *macvtap_ifname, const unsigned char *macvtap_macaddr, const char *linkdev, - const virVirtualPortProfileParamsPtr virtPort) + const virVirtualPortProfileParamsPtr virtPort, + enum vmOperation vmOp) { int rc = 0; VIR_DEBUG("Disassociating port profile id '%p' on link device '%s' ", virtPort, macvtap_ifname); + VIR_DEBUG("%s: VM OPERATION: %s", __FUNCTION__, vmOpStr[vmOp]); + switch (virtPort->virtPortType) { case VIR_VIRTUALPORT_NONE: case VIR_VIRTUALPORT_TYPE_LAST: @@ -1560,6 +1597,9 @@ vpDisassociatePortProfileId(const char * break; case VIR_VIRTUALPORT_8021QBH: + /* avoid disassociating twice */ + if (vmOp == VM_OP_MIGRATE_IN_FINISH) + break; rc = doPortProfileOp8021Qbh(linkdev, virtPort, NULL, DISASSOCIATE); Index: libvirt-acl/src/util/macvtap.h =================================================================== --- libvirt-acl.orig/src/util/macvtap.h +++ libvirt-acl/src/util/macvtap.h @@ -62,6 +62,17 @@ struct _virVirtualPortProfileParams { # include "internal.h" +enum vmOperation { + VM_OP_CREATE, + VM_OP_SAVE, + VM_OP_RESTORE, + VM_OP_DESTROY, + VM_OP_MIGRATE_OUT, + VM_OP_MIGRATE_IN_START, + VM_OP_MIGRATE_IN_FINISH, + VM_OP_NO_OP, +}; + int openMacvtapTap(const char *ifname, const unsigned char *macaddress, const char *linkdev, @@ -69,7 +80,8 @@ int openMacvtapTap(const char *ifname, int vnet_hdr, const unsigned char *vmuuid, virVirtualPortProfileParamsPtr virtPortProfile, - char **res_ifname); + char **res_ifname, + enum vmOperation vmop); void delMacvtap(const char *ifname, const unsigned char *macaddress, @@ -86,12 +98,14 @@ int vpAssociatePortProfileId(const char const unsigned char *macvtap_macaddr, const char *linkdev, const virVirtualPortProfileParamsPtr virtPort, - const unsigned char *vmuuid); + const unsigned char *vmuuid, + enum vmOperation vmOp); int vpDisassociatePortProfileId(const char *macvtap_ifname, const unsigned char *macvtap_macaddr, const char *linkdev, - const virVirtualPortProfileParamsPtr virtPort); + const virVirtualPortProfileParamsPtr virtPort, + enum vmOperation vmOp); VIR_ENUM_DECL(virVirtualPort) Index: libvirt-acl/src/libvirt_macvtap.syms =================================================================== --- libvirt-acl.orig/src/libvirt_macvtap.syms +++ libvirt-acl/src/libvirt_macvtap.syms @@ -3,3 +3,5 @@ # macvtap.h openMacvtapTap; delMacvtap; +vpAssociatePortProfileId; +vpDisassociatePortProfileId;

3 3

[libvirt] RFC: add new API to known if domain has been updated
by Osier Yang 24 Nov '10

24 Nov '10

Hi, all Suppose that one updated a domain, and want to restart the domain with original configuration. However, currently, unless shutdown the domain first, and then restart or reload libvirtd, otherwise domain will still be started with changed configuration. e.g. # virsh list --all Id Name State ---------------------------------- 1 f14 running # virsh dumpxml f14 | grep -A 7 cdrom <disk type='file' device='cdrom'> <driver name='qemu' type='raw'/> <source file='/var/lib/libvirt/images/cd1.iso'/> <target dev='hdc' bus='ide'/> <readonly/> <alias name='ide0-1-0'/> <address type='drive' controller='0' bus='1' unit='0'/> </disk> # virsh update-device f14 cd2.xml # virsh dumpxml f14 | grep -A 7 cdrom <disk type='file' device='cdrom'> <driver name='qemu' type='raw'/> <source file='/var/lib/libvirt/images/cd2.iso'/> <target dev='hdc' bus='ide'/> <readonly/> <alias name='ide0-1-0'/> <address type='drive' controller='0' bus='1' unit='0'/> </disk> # virsh destroy f14 # virsh start f14 # virsh dumpxml f14 | grep -A 7 cdrom <disk type='file' device='cdrom'> <driver name='qemu' type='raw'/> <source file='/var/lib/libvirt/images/cd2.iso'/> <target dev='hdc' bus='ide'/> <readonly/> <alias name='ide0-1-0'/> <address type='drive' controller='0' bus='1' unit='0'/> </disk> it's caused by libvirtd doesn't known if a domain is updated or not, it updated the domain configuration in memory, but client could not known about it. As a result, one wants to start the domain with original configuration, he has to shutdown the domain first, and then restart libvirt. It will be better if client could known if the domain is updated or not, and could choose to start the domain with original configuration or the updated one. So, considered introducing a new member, the idea is adding "unsigned int updated :1;" for "virDomainObj", adn the functions which will update domain configuration should set it to "1" so that libvirtd could known the domain is updated. e.g. static int qemudDomainChangeEjectableMedia (....) { ................. /* if Media is changed or ejected successfully */ if (!vm->updated) vm->updated = 1; .................. } And the client such as virsh could provide optional parameter for user to choose if start the guest with original configuration or not. e.g. # virsh start f14 --original it tells "virsh" to start the domain with the persistent domain configuration "/etc/libvirt/qemu/$domain.xml" but not the updated one maitained by libvirtd. PS: if this API is introduced finnally, we can also add "updated" information in "dominfo". What do you think about it? patches are coming following this thread. awaiting feedback.. :-) - Osier

4 22

[libvirt] changing disk/usb stick content
by Roberto Attias (rattias) 23 Nov '10

23 Nov '10

Hello, This is a request to extend libvirt documentation, explaining how is it possible to change a floppy/CDROM/usb-stick content for a running VM from host. The VirDomainUpdateDeviceFlags function documentation states: virDomainUpdateDeviceFlags int virDomainUpdateDeviceFlags (virDomainPtr <http://libvirt.org/html/libvirt-libvirt.html#virDomainPtr> domain, const char * xml, unsigned int flags) Change a virtual device on a domain, using the flags parameter to control how the device is changed. VIR_DOMAIN_DEVICE_MODIFY_CURRENT specifies that the device change is made based on current domain state.VIR_DOMAIN_DEVICE_MODIFY_LIVE <http://libvirt.org/html/libvirt-libvirt.html#VIR_DOMAIN_DEVICE_MODIFY_L IVE> specifies that the device shall be changed on the active domain instance only and is not added to the persisted domain configuration. VIR_DOMAIN_DEVICE_MODIFY_CONFIG specifies that the device shall be changed on the persisted domain configuration only. Note that the target hypervisor must return an error if unable to satisfy flags. E.g. the hypervisor driver will return failure if LIVE is specified but it only supports modifying the persisted device allocation. This method is used for actions such changing CDROM/Floppy device media, altering the graphics configuration such as password, reconfiguring the NIC device backend connectivity, etc. It would be really nice if you could provide an example of usage of this command. Thanks to eblake on #virt who pointed me to this: https://www.redhat.com/archives/libvir-list/2010-June/msg00219.html You could easily extract an example of use from there. Thanks, Roberto

1 0

[libvirt] [PATCH] maint: sort exports
by Eric Blake 23 Nov '10

23 Nov '10

* src/libvirt_private.syms (buf.h): Sort. --- Pushing under the trivial rule. src/libvirt_private.syms | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/src/libvirt_private.syms b/src/libvirt_private.syms index 0547cdf..33e52e2 100644 --- a/src/libvirt_private.syms +++ b/src/libvirt_private.syms @@ -23,8 +23,8 @@ virBufferAdd; virBufferAddChar; virBufferContentAndReset; virBufferError; -virBufferEscapeString; virBufferEscapeSexpr; +virBufferEscapeString; virBufferFreeAndReset; virBufferStrcat; virBufferURIEncodeString; -- 1.7.3.2

1 0

[libvirt] [PATCH] Don't log client errors in libvirtd
by Matthias Bolte 23 Nov '10

23 Nov '10

This reverts commit Log all errors at level INFO to stop polluting syslog 04bd0360f32ec628ecf7943b3fd1468d6eb2dde5. and makes virRaiseErrorFull() only log errors when not inside libvirtd. This stops libvirtd from polluting it's own log with client errors that'll be reported and logged on the client side anyway. --- daemon/libvirtd.c | 2 ++ src/libvirt_private.syms | 2 ++ src/util/logging.c | 14 ++++++++++++++ src/util/logging.h | 4 ++++ src/util/virterror.c | 22 ++++++++++++++++++++-- 5 files changed, 42 insertions(+), 2 deletions(-) diff --git a/daemon/libvirtd.c b/daemon/libvirtd.c index 66f1388..0b75624 100644 --- a/daemon/libvirtd.c +++ b/daemon/libvirtd.c @@ -3083,6 +3083,8 @@ int main(int argc, char **argv) { exit(EXIT_FAILURE); } + virLogSetDaemonMode(true); + while (1) { int optidx = 0; int c; diff --git a/src/libvirt_private.syms b/src/libvirt_private.syms index 0547cdf..a148620 100644 --- a/src/libvirt_private.syms +++ b/src/libvirt_private.syms @@ -485,6 +485,7 @@ virRegisterStorageDriver; # logging.h virLogDefineFilter; virLogDefineOutput; +virLogGetDaemonMode; virLogGetDefaultPriority; virLogGetFilters; virLogGetNbFilters; @@ -496,6 +497,7 @@ virLogParseDefaultPriority; virLogParseFilters; virLogParseOutputs; virLogReset; +virLogSetDaemonMode; virLogSetDefaultPriority; virLogSetFromEnv; virLogShutdown; diff --git a/src/util/logging.c b/src/util/logging.c index d65dec0..e87ed6a 100644 --- a/src/util/logging.c +++ b/src/util/logging.c @@ -170,6 +170,7 @@ static const char *virLogPriorityString(virLogPriority lvl) { } static int virLogInitialized = 0; +static bool virLogDaemonMode = false; /** * virLogStartup: @@ -589,6 +590,19 @@ void virLogMessage(const char *category, int priority, const char *funcname, VIR_FREE(msg); } +bool +virLogGetDaemonMode(void) +{ + return virLogDaemonMode; +} + +void +virLogSetDaemonMode(bool daemonMode) +{ + virLogDaemonMode = daemonMode; +} + + static int virLogOutputToFd(const char *category ATTRIBUTE_UNUSED, int priority ATTRIBUTE_UNUSED, const char *funcname ATTRIBUTE_UNUSED, diff --git a/src/util/logging.h b/src/util/logging.h index 574f68d..ef78e97 100644 --- a/src/util/logging.h +++ b/src/util/logging.h @@ -22,6 +22,8 @@ #ifndef __VIRTLOG_H_ # define __VIRTLOG_H_ +# include <stdbool.h> + # include "internal.h" # include "buf.h" @@ -139,5 +141,7 @@ extern int virLogParseOutputs(const char *output); extern void virLogMessage(const char *category, int priority, const char *funcname, long long linenr, int flags, const char *fmt, ...) ATTRIBUTE_FMT_PRINTF(6, 7); +extern bool virLogGetDaemonMode(void); +extern void virLogSetDaemonMode(bool daemonMode); #endif diff --git a/src/util/virterror.c b/src/util/virterror.c index 83c4c9d..14d92fd 100644 --- a/src/util/virterror.c +++ b/src/util/virterror.c @@ -64,6 +64,18 @@ void *virUserData = NULL; /* associated data */ }} \ } +static virLogPriority virErrorLevelPriority(virErrorLevel level) { + switch (level) { + case VIR_ERR_NONE: + return(VIR_LOG_INFO); + case VIR_ERR_WARNING: + return(VIR_LOG_WARN); + case VIR_ERR_ERROR: + return(VIR_LOG_ERROR); + } + return(VIR_LOG_ERROR); +} + static const char *virErrorDomainName(virErrorDomain domain) { const char *dom = "unknown"; switch (domain) { @@ -703,9 +715,15 @@ virRaiseErrorFull(virConnectPtr conn ATTRIBUTE_UNUSED, /* * Hook up the error or warning to the logging facility * XXXX should we include filename as 'category' instead of domain name ? + * + * When inside libvirtd don't log errors, this would pollute the syslog + * with client errors. Those will get reported and logged on the client + * side anyway. */ - virLogMessage(virErrorDomainName(domain), VIR_LOG_INFO, - funcname, linenr, 1, "%s", str); + if (!virLogGetDaemonMode()) { + virLogMessage(virErrorDomainName(domain), virErrorLevelPriority(level), + funcname, linenr, 1, "%s", str); + } /* * Save the information about the error -- 1.7.0.4

3 2

[libvirt] [PATCH] remote: Fix TLS transport on Windows
by Matthias Bolte 23 Nov '10

23 Nov '10

gnulib wraps Windows' SOCKET handle based send() and recv() functions into file descriptor based ones that are use in libvirt. By default GnuTLS uses the SOCKET handle based send() and recv() on Windows. This makes gnutls_handshake() fail internally with a WSAENOTSOCK error because libvirt passes a file descriptor; GnuTLS needs the SOCKET handle. To avoid this mismatch make sure that GnuTLS uses gnulib's replacment functions, by setting custom pull() and push() functions for GnuTLS. --- src/remote/remote_driver.c | 21 +++++++++++++++++++++ 1 files changed, 21 insertions(+), 0 deletions(-) diff --git a/src/remote/remote_driver.c b/src/remote/remote_driver.c index f45476a..87977ab 100644 --- a/src/remote/remote_driver.c +++ b/src/remote/remote_driver.c @@ -1212,6 +1212,20 @@ initialize_gnutls(void) static int verify_certificate (virConnectPtr conn, struct private_data *priv, gnutls_session_t session); +#if HAVE_WINSOCK2_H +static ssize_t +custom_gnutls_push(void *s, const void *buf, size_t len) +{ + return send((int)(long)s, buf, len, 0); +} + +static ssize_t +custom_gnutls_pull(void *s, void *buf, size_t len) +{ + return recv((int)(long)s, buf, len, 0); +} +#endif + static gnutls_session_t negotiate_gnutls_on_connection (virConnectPtr conn, struct private_data *priv, @@ -1266,6 +1280,13 @@ negotiate_gnutls_on_connection (virConnectPtr conn, gnutls_transport_set_ptr (session, (gnutls_transport_ptr_t) (long) priv->sock); +#if HAVE_WINSOCK2_H + /* Make sure GnuTLS uses gnulib's replacment functions for send() and + * recv() on Windows */ + gnutls_transport_set_push_function(session, custom_gnutls_push); + gnutls_transport_set_pull_function(session, custom_gnutls_pull); +#endif + /* Perform the TLS handshake. */ again: err = gnutls_handshake (session); -- 1.7.0.4

4 9

[libvirt] [PATCH] tests: Fix dispatching internal error reports
by Cole Robinson 23 Nov '10

23 Nov '10

Without this fix, the test suite doesn't print error messages when a libvirt function fails. Signed-off-by: Cole Robinson <crobinso(a)redhat.com> --- tests/testutils.c | 12 +++++++++--- 1 files changed, 9 insertions(+), 3 deletions(-) diff --git a/tests/testutils.c b/tests/testutils.c index 96181b2..8a3439d 100644 --- a/tests/testutils.c +++ b/tests/testutils.c @@ -126,12 +126,18 @@ virtTestRun(const char *title, int nloops, int (*body)(const void *data), const if (ts) GETTIMEOFDAY(&before); + virResetLastError(); - if ((ret = body(data)) != 0) - break; + ret = body(data); virErrorPtr err = virGetLastError(); - if (err) + if (err) { virDispatchError(NULL); + } + + if (ret != 0) { + break; + } + if (ts) { GETTIMEOFDAY(&after); ts[i] = DIFF_MSEC(&after, &before); -- 1.7.3.2

2 3

[libvirt] [PATCH 0/6] Fix state driver hotplug semantics
by Cole Robinson 23 Nov '10

23 Nov '10

Currently, domain hotplug operations in the state drivers (QEMU, LXC, ...) have strange semantics: a hotplug config change will stick around in memory until the domain is either redefined or libvirtd is restarted. This series fixes hotplug config changes to be discarded when the VM is stopped, which AFAICT is the expected behavior. A few bugs with setvcpus implementations are also addressed. Thanks, Cole Cole Robinson (6): domain_conf: Add virDomainObjSetDefTransient Make state driver device hotplug/update actually transient conf: domain: Improve vcpus validation reporting qemu: setvcpus: Fix maxvcpus check qemu: setvcpus: Simplify altering the persistent config qemu: setvcpus: Save config changes to disk src/conf/domain_conf.c | 76 +++++++++++++++++++++++++++++++++++++++-- src/conf/domain_conf.h | 5 +++ src/libvirt_private.syms | 2 + src/lxc/lxc_driver.c | 3 ++ src/qemu/qemu_driver.c | 56 ++++++++++++++--------------- src/test/test_driver.c | 86 +++++++++++++++++++++------------------------- src/uml/uml_driver.c | 5 ++- 7 files changed, 153 insertions(+), 80 deletions(-) -- 1.7.3.2

4 16

[libvirt] RFC: CPU counting in qemu driver
by Jiri Denemark 23 Nov '10

23 Nov '10

Hi all, libvirt's qemu driver doesn't follow the semantics of CPU-related counters in nodeinfo structure, which is nodes : the number of NUMA cell, 1 for uniform mem access sockets : number of CPU socket per node cores : number of core per socket threads : number of threads per core Qemu driver ignores the "per node" part of sockets semantics, and only gives total number of sockets found on the host. That actually makes more sense but we have to fix it since it doesn't follow the documented semantics of public API. That is, we would do something like the following at the end of linuxNodeInfoCPUPopulate(): nodeinfo->sockets /= nodeinfo->nodes; The problem is that NUMA topology is independent on CPU topology and there are systems for which nodeinfo->sockets % nodeinfo->nodes != 0. An example being the following NUMA topology of a system with 4 CPU sockets: node0 CPUs: 0-5 total memory: 8252920 node1 CPUs: 6-11 total memory: 16547840 node2 CPUs: 12-17 total memory: 8273920 node3 CPUs: 18-23 total memory: 16547840 node4 CPUs: 24-29 total memory: 8273920 node5 CPUs: 30-35 total memory: 16547840 node6 CPUs: 36-41 total memory: 8273920 node7 CPUs: 42-47 total memory: 16547840 which shows that the cores are actually mapped via the AMD intra-socket interconnects. Note that this funky topology was verified to be correct so it's not just a kernel bug which would result in wrong topology being reported. So the suggested calculation wouldn't work on such systems and we cannot really follow the API semantics since it doesn't work in this case. My suggestion is to use the following code in linuxNodeInfoCPUPopulate(): if (nodeinfo->sockets % nodeinfo->nodes == 0) nodeinfo->sockets /= nodeinfo->nodes; else nodeinfo->nodes = 1; That is we would lie about number of NUMA nodes on funky systems. If nodeinfo->nodes is greater than 1, then applications can rely on it being correct. If it's 1, applications that care about NUMA topology should consult /capabilities/host/topology/cells of capabilities XML to check the number of NUMA nodes in a reliable way, which I guess such applications would do anyway. However, if you have a better idea of fixing the issue while staying more compatible with current semantics, don't hesitate to share it. Note, that we have VIR_NODEINFO_MAXCPUS macro in libvirt.h which computes maximum number of CPUs as (nodes * sockets * cores * threads) and we need to keep this working. Jirka

2 6

[libvirt] [PATCH 0/4] Support the QED disk image format (V2)
by Adam Litke 23 Nov '10

23 Nov '10

Changes since V1: - Fix virStorageFileMatchesVersion() for formats without version info - Allow backingStore format probing for QED images since it is safe Qemu is about to gain support for a new disk image format: QED. Details on this format (including specification) can be found here: http://wiki.qemu.org/Features/QED. This short series of patches allows QED images to be used with libvirt. Adam Litke (4): Allow probing of image formats without version information QED: Basic support for QED images storage_file: Add a new flag to mark backing files that are safe to probe Support for probing qed image metadata src/conf/domain_conf.c | 4 ++ src/util/storage_file.c | 89 +++++++++++++++++++++++++++++++++++++++++++++-- src/util/storage_file.h | 2 + 3 files changed, 92 insertions(+), 3 deletions(-) -- 1.7.3.2.164.g6f10c

4 15

[libvirt] [PATCH] Log all errors at level INFO to stop polluting syslog
by Daniel P. Berrange 23 Nov '10

23 Nov '10

Everytime a public API returns an error, libvirtd pollutes syslog with that error message. Reduce the error logging level to INFO so these don't appear by default. * src/util/virterror.c: Log all errors at INFO --- src/util/virterror.c | 14 +------------- 1 files changed, 1 insertions(+), 13 deletions(-) diff --git a/src/util/virterror.c b/src/util/virterror.c index d524d04..ecd9fc9 100644 --- a/src/util/virterror.c +++ b/src/util/virterror.c @@ -64,18 +64,6 @@ void *virUserData = NULL; /* associated data */ }} \ } -static virLogPriority virErrorLevelPriority(virErrorLevel level) { - switch (level) { - case VIR_ERR_NONE: - return(VIR_LOG_INFO); - case VIR_ERR_WARNING: - return(VIR_LOG_WARN); - case VIR_ERR_ERROR: - return(VIR_LOG_ERROR); - } - return(VIR_LOG_ERROR); -} - static const char *virErrorDomainName(virErrorDomain domain) { const char *dom = "unknown"; switch (domain) { @@ -719,7 +707,7 @@ virRaiseErrorFull(virConnectPtr conn ATTRIBUTE_UNUSED, * Hook up the error or warning to the logging facility * XXXX should we include filename as 'category' instead of domain name ? */ - virLogMessage(virErrorDomainName(domain), virErrorLevelPriority(level), + virLogMessage(virErrorDomainName(domain), VIR_LOG_INFO, funcname, linenr, 1, "%s", str); /* -- 1.7.2.3

2 5

[libvirt] [PATCH 00/10] virCommand
by Eric Blake 23 Nov '10

23 Nov '10

This revives a couple of patch series from the past, and rebases them on top of the current tree. I've tested that the daemon hook on SIGHUP works with this rewrite, so I'm fairly confident that it is in decent shape, but there's still a lot more to do for both converting VIR_REALLOC_N to newer VIR_EXPAND_N or VIR_RESIZE_N, as well as converting virExec uses to virCommand. I wanted to get this posted for first reviews while I continue porting more instances. Daniel P. Berrange (5): Fix bug in setting up child stderr/out with /dev/null Remove bogus includes Introduce new APIs for spawning processes virCommand: docs for usage of new command APIs Port hooks and iptables code to new command execution APIs Eric Blake (5): memory: make it safer to expand arrays memory: make it easier to avoid quadratic scaling of arrays daemon: use safer memory growth macros capabilities, cpu: use new array API maint: tighten strncmp syntax check .x-sc_avoid_write | 1 + .x-sc_prohibit_strcmp_and_strncmp | 9 - .x-sc_prohibit_strncmp | 1 + HACKING | 59 ++- Makefile.am | 2 +- cfg.mk | 15 +- daemon/event.c | 44 +- daemon/libvirtd.c | 8 +- daemon/libvirtd.h | 11 +- docs/Makefile.am | 11 +- docs/hacking.html.in | 64 ++- docs/internals.html.in | 9 + docs/internals/command.html.in | 491 +++++++++++++++++++ docs/sitemap.html.in | 4 + docs/subsite.xsl | 25 + po/POTFILES.in | 1 + src/Makefile.am | 1 + src/conf/capabilities.c | 37 +- src/conf/capabilities.h | 20 +- src/conf/cpu_conf.c | 7 +- src/conf/cpu_conf.h | 5 +- src/conf/domain_conf.c | 1 - src/libvirt_private.syms | 32 ++ src/util/command.c | 960 +++++++++++++++++++++++++++++++++++++ src/util/command.h | 213 ++++++++ src/util/hooks.c | 217 +-------- src/util/iptables.c | 73 +--- src/util/memory.c | 94 ++++- src/util/memory.h | 77 +++- src/util/util.c | 2 +- tests/.gitignore | 4 + tests/Makefile.am | 18 +- tests/commanddata/test10.log | 14 + tests/commanddata/test11.log | 14 + tests/commanddata/test12.log | 12 + tests/commanddata/test13.log | 12 + tests/commanddata/test14.log | 12 + tests/commanddata/test15.log | 12 + tests/commanddata/test2.log | 12 + tests/commanddata/test3.log | 14 + tests/commanddata/test4.log | 12 + tests/commanddata/test5.log | 10 + tests/commanddata/test6.log | 6 + tests/commanddata/test7.log | 11 + tests/commanddata/test8.log | 7 + tests/commanddata/test9.log | 18 + tests/commandhelper.c | 136 ++++++ tests/commandtest.c | 572 ++++++++++++++++++++++ tests/testutilsqemu.c | 1 + 49 files changed, 3009 insertions(+), 382 deletions(-) delete mode 100644 .x-sc_prohibit_strcmp_and_strncmp create mode 100644 .x-sc_prohibit_strncmp create mode 100644 docs/internals/command.html.in create mode 100644 docs/subsite.xsl create mode 100644 src/util/command.c create mode 100644 src/util/command.h create mode 100644 tests/commanddata/test10.log create mode 100644 tests/commanddata/test11.log create mode 100644 tests/commanddata/test12.log create mode 100644 tests/commanddata/test13.log create mode 100644 tests/commanddata/test14.log create mode 100644 tests/commanddata/test15.log create mode 100644 tests/commanddata/test2.log create mode 100644 tests/commanddata/test3.log create mode 100644 tests/commanddata/test4.log create mode 100644 tests/commanddata/test5.log create mode 100644 tests/commanddata/test6.log create mode 100644 tests/commanddata/test7.log create mode 100644 tests/commanddata/test8.log create mode 100644 tests/commanddata/test9.log create mode 100644 tests/commandhelper.c create mode 100644 tests/commandtest.c -- 1.7.3.2

5 32

[libvirt] [PATCH] Fix 32-bit int truncation in QED header check
by Daniel P. Berrange 23 Nov '10

23 Nov '10

* src/util/memory.c: Avoid 32-bit truncation extracting a 64bit int --- src/util/storage_file.c | 16 ++++++++-------- 1 files changed, 8 insertions(+), 8 deletions(-) diff --git a/src/util/storage_file.c b/src/util/storage_file.c index aa117e7..37d3ecf 100644 --- a/src/util/storage_file.c +++ b/src/util/storage_file.c @@ -437,14 +437,14 @@ qedGetHeaderUL(const unsigned char *loc) static unsigned long long qedGetHeaderULL(const unsigned char *loc) { - return ( ((unsigned long)loc[7] << 56) - | ((unsigned long)loc[6] << 48) - | ((unsigned long)loc[5] << 40) - | ((unsigned long)loc[4] << 32) - | ((unsigned long)loc[3] << 24) - | ((unsigned long)loc[2] << 16) - | ((unsigned long)loc[1] << 8) - | ((unsigned long)loc[0] << 0)); + return ( ((unsigned long long)loc[7] << 56) + | ((unsigned long long)loc[6] << 48) + | ((unsigned long long)loc[5] << 40) + | ((unsigned long long)loc[4] << 32) + | ((unsigned long long)loc[3] << 24) + | ((unsigned long long)loc[2] << 16) + | ((unsigned long long)loc[1] << 8) + | ((unsigned long long)loc[0] << 0)); } static int -- 1.7.2.3

2 1

[libvirt] [PATCH] Rename 'remove' param to 'toremove' to avoid clash with Win32 header
by Daniel P. Berrange 23 Nov '10

23 Nov '10

The win32 headers have a function called 'remove' declared. This clashes with the 'remove' parameter in virShrinkN * src/util/memory.c: Rename 'remove' to 'toremove' --- src/util/memory.c | 12 ++++++------ 1 files changed, 6 insertions(+), 6 deletions(-) diff --git a/src/util/memory.c b/src/util/memory.c index 96222db..f5061c0 100644 --- a/src/util/memory.c +++ b/src/util/memory.c @@ -237,18 +237,18 @@ int virResizeN(void *ptrptr, size_t size, size_t *allocptr, size_t count, * @ptrptr: pointer to pointer for address of allocated memory * @size: number of bytes per element * @countptr: pointer to number of elements in array - * @remove: number of elements to remove + * @toremove: number of elements to remove * * Resize the block of memory in 'ptrptr' to be an array of - * '*countptr' - 'remove' elements, each 'size' bytes in length. + * '*countptr' - 'toremove' elements, each 'size' bytes in length. * Update 'ptrptr' and 'countptr' with the details of the newly - * allocated memory. If 'remove' is larger than 'countptr', free + * allocated memory. If 'toremove' is larger than 'countptr', free * the entire array. */ -void virShrinkN(void *ptrptr, size_t size, size_t *countptr, size_t remove) +void virShrinkN(void *ptrptr, size_t size, size_t *countptr, size_t toremove) { - if (remove < *countptr) - ignore_value(virReallocN(ptrptr, size, *countptr -= remove)); + if (toremove < *countptr) + ignore_value(virReallocN(ptrptr, size, *countptr -= toremove)); else { virFree(ptrptr); *countptr = 0; -- 1.7.2.3

2 1