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[libvirt] [PATCH] Fix compilation of legacy xen driver with Xen 4.2
by Jim Fehlig 28 Sep '12

28 Sep '12

In Xen 4.2, xs.h is deprecated in favor of xenstore.h. xs.h now contains #warning xs.h is deprecated use xenstore.h instead #include <xenstore.h> which fails compilation when warnings are treated as errors. Introduce a configure-time check for xenstore.h and if found, use it instead of xs.h. --- configure.ac | 2 ++ src/xen/block_stats.c | 6 +++++- src/xen/xs_internal.c | 6 +++++- 3 files changed, 12 insertions(+), 2 deletions(-) diff --git a/configure.ac b/configure.ac index 38d94d4..ae26de7 100644 --- a/configure.ac +++ b/configure.ac @@ -768,6 +768,8 @@ if test "$with_xen" != "no" ; then fi if test "$with_xen" != "no" ; then + dnl In Xen 4.2, xs.h is deprecated in favor of xenstore.h. + AC_CHECK_HEADERS([xenstore.h]) AC_CHECK_HEADERS([xen/xen.h xen/version.h xen/dom0_ops.h],,[ if test "$with_xen" = "yes"; then fail=1 diff --git a/src/xen/block_stats.c b/src/xen/block_stats.c index f3b756a..5ab1ce4 100644 --- a/src/xen/block_stats.c +++ b/src/xen/block_stats.c @@ -32,7 +32,11 @@ # include <unistd.h> # include <regex.h> -# include <xs.h> +# if HAVE_XENSTORE_H +# include <xenstore.h> +# else +# include <xs.h> +# endif # include "virterror_internal.h" # include "datatypes.h" diff --git a/src/xen/xs_internal.c b/src/xen/xs_internal.c index 12efa0c..a91d409 100644 --- a/src/xen/xs_internal.c +++ b/src/xen/xs_internal.c @@ -35,7 +35,11 @@ #include <xen/dom0_ops.h> #include <xen/version.h> -#include <xs.h> +#if HAVE_XENSTORE_H +# include <xenstore.h> +#else +# include <xs.h> +#endif #include "virterror_internal.h" #include "datatypes.h" -- 1.7.10.4

2 2

[libvirt] [PATCH] Temporarily shutoff CPUSET cgroup in libvirt.
by Tang Chen 27 Sep '12

27 Sep '12

When a cpu or memory is offlined and onlined again, cgroup will not recover any corresponding values. This is a problem in kernel. Do not use CPUSET cgroup to limit threads using cpu and memory until the problem is fixed in kernel. Signed-off-by: Tang Chen <tangchen(a)cn.fujitsu.com> --- src/qemu/qemu.conf | 5 ++++- src/qemu/qemu_conf.c | 7 ++++++- src/util/cgroup.c | 3 +-- 3 files changed, 11 insertions(+), 4 deletions(-) diff --git a/src/qemu/qemu.conf b/src/qemu/qemu.conf index 18105ca..6bf7290 100644 --- a/src/qemu/qemu.conf +++ b/src/qemu/qemu.conf @@ -211,7 +211,10 @@ # can be mounted in different locations. libvirt will detect # where they are located. # -#cgroup_controllers = [ "cpu", "devices", "memory", "blkio", "cpuset", "cpuacct" ] +# When a cpu or memory is offlined and onlined again, cgroup will not +# recover any corresponding values. This is a problem in kernel. +# So DO NOT use cpuset cgroup until this problem is fixed in kernel. +#cgroup_controllers = [ "cpu", "devices", "memory", "blkio", "cpuacct" ] # This is the basic set of devices allowed / required by # all virtual machines. diff --git a/src/qemu/qemu_conf.c b/src/qemu/qemu_conf.c index 91a56f1..80b0787 100644 --- a/src/qemu/qemu_conf.c +++ b/src/qemu/qemu_conf.c @@ -397,12 +397,17 @@ int qemudLoadDriverConfig(struct qemud_driver *driver, driver->cgroupControllers |= (1 << ctl); } } else { + /* + * When a cpu or memory is offlined and onlined again, cgroup will not + * recover any corresponding values. This is a problem in kernel. + * Do not use CPUSET cgroup to limit threads using cpu and memory until + * the problem is fixed in kernel. + */ driver->cgroupControllers = (1 << VIR_CGROUP_CONTROLLER_CPU) | (1 << VIR_CGROUP_CONTROLLER_DEVICES) | (1 << VIR_CGROUP_CONTROLLER_MEMORY) | (1 << VIR_CGROUP_CONTROLLER_BLKIO) | - (1 << VIR_CGROUP_CONTROLLER_CPUSET) | (1 << VIR_CGROUP_CONTROLLER_CPUACCT); } for (i = 0 ; i < VIR_CGROUP_CONTROLLER_LAST ; i++) { diff --git a/src/util/cgroup.c b/src/util/cgroup.c index 5dc0764..cd7d3fe 100644 --- a/src/util/cgroup.c +++ b/src/util/cgroup.c @@ -543,8 +543,7 @@ static int virCgroupMakeGroup(virCgroupPtr parent, virCgroupPtr group, /* We need to control cpu bandwidth for each vcpu now */ if ((flags & VIR_CGROUP_VCPU) && (i != VIR_CGROUP_CONTROLLER_CPU && - i != VIR_CGROUP_CONTROLLER_CPUACCT && - i != VIR_CGROUP_CONTROLLER_CPUSET)) { + i != VIR_CGROUP_CONTROLLER_CPUACCT)) { /* treat it as unmounted and we can use virCgroupAddTask */ VIR_FREE(group->controllers[i].mountPoint); continue; -- 1.7.10.1

3 4

[libvirt] [PATCH] Network: LXC generic ethernet interface
by Takayuki Usui 27 Sep '12

27 Sep '12

The patch adds generic ethernet type to LXC, that allows you to make an arbitrary virtual network interface and associate it to an LXC domain. That does not, however, provide a means to execute a script, that is still available only for QEMU. 1. Create a virtual ethernet device pair # ip link add type veth (e.g. veth0 and veth1 by default) 2. Define a LXC domain and associate it to one end of the pair [...] <interface type='ethernet'> <target dev='veth1'/> </interface> 3. Do whatever you like, for example, add another end of the pair to a bridge (e.g. br0) # brctr addif br0 veth0 # ip link set dev veth0 up 4. Start a LXC domain. The interface shows up as eth0 in the domain. Signed-off-by: Takayuki Usui <takayuki(a)midokura.jp> --- src/lxc/lxc_process.c | 50 ++++++++++++++++++++++++++++++++++++++++++++++++- 1 file changed, 49 insertions(+), 1 deletion(-) diff --git a/src/lxc/lxc_process.c b/src/lxc/lxc_process.c index 84128d1..0b86241 100644 --- a/src/lxc/lxc_process.c +++ b/src/lxc/lxc_process.c @@ -419,6 +419,46 @@ cleanup: } +static int lxcSetupInterfaceEthernet(virConnectPtr conn ATTRIBUTE_UNUSED, + virDomainDefPtr def ATTRIBUTE_UNUSED, + virDomainNetDefPtr net, + unsigned int *nveths, + char ***veths) +{ + int ret = -1; + char *containerVeth = NULL; + + if (net->ifname == 0 || strlen(net->ifname) == 0) { + virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s", + _("Ethernet target device is required")); + goto cleanup; + } + + if (VIR_ALLOC_N(containerVeth, strlen(net->ifname) + 1) < 0) { + virReportOOMError(); + goto cleanup; + } + if (VIR_REALLOC_N(*veths, (*nveths)+1) < 0) { + virReportOOMError(); + VIR_FREE(containerVeth); + goto cleanup; + } + if (virStrcpy(containerVeth, net->ifname, + strlen(net->ifname) + 1) == NULL) { + virReportError(VIR_ERR_INTERNAL_ERROR, "%s", + _("Ethernet target device name is too long")); + VIR_FREE(containerVeth); + goto cleanup; + } + (*veths)[(*nveths)] = containerVeth; + (*nveths)++; + + ret = 0; + +cleanup: + return ret; +} + /** * virLXCProcessSetupInterfaces: * @conn: pointer to connection @@ -522,8 +562,16 @@ static int virLXCProcessSetupInterfaces(virConnectPtr conn, goto cleanup; break; - case VIR_DOMAIN_NET_TYPE_USER: case VIR_DOMAIN_NET_TYPE_ETHERNET: + if (lxcSetupInterfaceEthernet(conn, + def, + def->nets[i], + nveths, + veths) < 0) + goto cleanup; + break; + + case VIR_DOMAIN_NET_TYPE_USER: case VIR_DOMAIN_NET_TYPE_SERVER: case VIR_DOMAIN_NET_TYPE_CLIENT: case VIR_DOMAIN_NET_TYPE_MCAST: -- 1.7.9.5

2 1

[libvirt] [PATCH] Fix dnsmasq/radvd on bridges not being able to be bound to IPv6 address on "recent" kernels
by Benjamin Cama 27 Sep '12

27 Sep '12

Hi, I hit this problem recently when trying to create a bridge with an IPv6 address on a 3.2 kernel: dnsmasq (and, further, radvd) would not bind to the given address (resp. interface), waiting 20s and then giving up with -EADDRNOTAVAIL (resp. exiting immediately with "error parsing or activating the config file", without libvirt noticing it, BTW). This can be reproduced with (I think) any kernel >= 2.6.39 and the following XML (to be used with "virsh net-create"): <network> <name>test-bridge</name> <bridge name='testbr0' /> <ip family='ipv6' address='fd00::1' prefix='64'> </ip> </network> (it happens even when you have an IPv4, too) The problem is that since commit [1] (which, ironically, was made to “help IPv6 autoconfiguration”) the linux bridge code makes bridges behave like “real” devices regarding carrier detection. This makes the bridges created by libvirt, which are started without any up devices, stay with the NO-CARRIER flag set, and thus prevents DAD (Duplicate address detection) from happening, thus letting the IPv6 address flagged as “tentative”. Such addresses cannot be bound to (see RFC 2462), so dnsmasq fails binding to it (for radvd, it detects that "interface XXX is not RUNNING", thus that "interface XXX does not exist, ignoring the interface" (sic)). It seems that this behavior was enhanced somehow with commit [2] by avoiding setting NO-CARRIER on empty bridges, but I couldn't reproduce this behavior on my kernel. Anyway, with the “dummy tap to set MAC address” trick, this wouldn't work. To fix this, the idea is to get the bridge's attached device to be up so that DAD can happen (deactivating DAD altogether is not a good idea, I think). Currently, libvirt creates a dummy TAP device to set the MAC address of the bridge, keeping it down. But even if we set this device up, it is not RUNNING as soon as the tap file descriptor attached to it is closed, thus still preventing DAD. So, we must modify the API a bit, so that we can get the fd, keep the tap device persistent, run the daemons, and close it after DAD has taken place. After that, the bridge will be flagged NO-CARRIER again, but the daemons will be running, even if not happy about the device's state (but we don't really care about the bridge's daemons doing anything when no up interface is connected to it). Other solutions that I envisioned were: * Keeping the *-nic interface up: this would waste an fd for each bridge during all its life. May be acceptable, I don't really know. * Stop using the dummy tap trick, and set the MAC address directly on the bridge: it is possible since quite some time it seems, even if then there is the problem of the bridge not being RUNNING when empty, contrary to what [2] says, so this will need fixing (and this fix only happened in 3.1, so it wouldn't work for 2.6.39) * Using the --interface option of dnsmasq, but I saw somewhere that it's not used by libvirt for backward compatibility. I am not sure this would solve this problem, though, as I don't know how dnsmasq binds itself to it with this option. This is why this patch does what's described earlier. I see radvd yelling quite often in the logs when the interface is NO-CARRIER, but it's ok, it keeps running. Still, this patch is not exactly correct, as radvd get daemonized “too soon” most of the time (i.e. when not debugging libvirtd…) and probes the bridge once it has been set down (even if started before setting it down), thus failing as before (and libvirt lets it be like that: this would need some more checking, maybe). One /may/ introduce some delay between networkStartRadvd() and setting the dummy tap down to solve it, but it seemed too hackish to me. But I couldn't come with a better solution. I would welcome suggestions here. BTW, I removed the “up” argument from virNetDevTapCreateInBridgePort() and virNetDevTapCreate() as all TAP devices are created up now, and I fixed a function name in the docstring. [1] http://git.kernel.org/?p=linux/kernel/git/torvalds/linux.git;a=commit;h=1fa… [2] http://git.kernel.org/?p=linux/kernel/git/torvalds/linux.git;a=commit;h=b64… --- src/network/bridge_driver.c | 15 ++++++++++++++- src/qemu/qemu_command.c | 2 +- src/uml/uml_conf.c | 2 +- src/util/virnetdevtap.c | 29 +++++++++++++++++------------ src/util/virnetdevtap.h | 7 ++++--- 5 files changed, 37 insertions(+), 18 deletions(-) diff --git a/src/network/bridge_driver.c b/src/network/bridge_driver.c index 63338a2..a13efe6 100644 --- a/src/network/bridge_driver.c +++ b/src/network/bridge_driver.c @@ -62,6 +62,7 @@ #include "virnetdev.h" #include "virnetdevbridge.h" #include "virnetdevtap.h" +#include "virfile.h" #define NETWORK_PID_DIR LOCALSTATEDIR "/run/libvirt/network" #define NETWORK_STATE_DIR LOCALSTATEDIR "/lib/libvirt/network" @@ -1693,6 +1694,7 @@ networkStartNetworkVirtual(struct network_driver *driver, virErrorPtr save_err = NULL; virNetworkIpDefPtr ipdef; char *macTapIfName = NULL; + int tapfd = -1; /* Check to see if any network IP collides with an existing route */ if (networkCheckRouteCollision(network) < 0) @@ -1714,8 +1716,9 @@ networkStartNetworkVirtual(struct network_driver *driver, virReportOOMError(); goto err0; } + /* Keep tun fd open and interface up to allow for IPv6 DAD to happen */ if (virNetDevTapCreateInBridgePort(network->def->bridge, - &macTapIfName, network->def->mac, 0, false, NULL) < 0) { + &macTapIfName, network->def->mac, 0, &tapfd, true) < 0) { VIR_FREE(macTapIfName); goto err0; } @@ -1775,6 +1778,16 @@ networkStartNetworkVirtual(struct network_driver *driver, if (v6present && networkStartRadvd(network) < 0) goto err4; + /* DAD has happened (dnsmasq waits for it), dnsmasq is now bound to the + * bridge's IPv6 address, and radvd to the interface, so we can now set the + * dummy tun down. + */ + if (tapfd >= 0) { + if (virNetDevSetOnline(macTapIfName, false) < 0) + goto err4; + VIR_FORCE_CLOSE(tapfd); + } + if (virNetDevBandwidthSet(network->def->bridge, network->def->bandwidth) < 0) { networkReportError(VIR_ERR_INTERNAL_ERROR, _("cannot set bandwidth limits on %s"), diff --git a/src/qemu/qemu_command.c b/src/qemu/qemu_command.c index 22dc871..08457e7 100644 --- a/src/qemu/qemu_command.c +++ b/src/qemu/qemu_command.c @@ -247,7 +247,7 @@ qemuNetworkIfaceConnect(virDomainDefPtr def, memcpy(tapmac, net->mac, VIR_MAC_BUFLEN); tapmac[0] = 0xFE; /* Discourage bridge from using TAP dev MAC */ err = virNetDevTapCreateInBridgePort(brname, &net->ifname, tapmac, - vnet_hdr, true, &tapfd); + vnet_hdr, &tapfd, false); virDomainAuditNetDevice(def, net, "/dev/net/tun", tapfd >= 0); if (err < 0) { if (template_ifname) diff --git a/src/uml/uml_conf.c b/src/uml/uml_conf.c index b878622..bd838a6 100644 --- a/src/uml/uml_conf.c +++ b/src/uml/uml_conf.c @@ -141,7 +141,7 @@ umlConnectTapDevice(virConnectPtr conn, memcpy(tapmac, net->mac, VIR_MAC_BUFLEN); tapmac[0] = 0xFE; /* Discourage bridge from using TAP dev MAC */ if (virNetDevTapCreateInBridgePort(bridge, &net->ifname, tapmac, - 0, true, NULL) < 0) { + 0, NULL, true) < 0) { if (template_ifname) VIR_FREE(net->ifname); goto error; diff --git a/src/util/virnetdevtap.c b/src/util/virnetdevtap.c index 2ed53c6..3e2c2cc 100644 --- a/src/util/virnetdevtap.c +++ b/src/util/virnetdevtap.c @@ -109,18 +109,21 @@ virNetDevProbeVnetHdr(int tapfd) * @ifname: the interface name * @vnet_hr: whether to try enabling IFF_VNET_HDR * @tapfd: file descriptor return value for the new tap device + * @persist: if the device persists after the file descriptor is closed * * Creates a tap interface. * If the @tapfd parameter is supplied, the open tap device file - * descriptor will be returned, otherwise the TAP device will be made - * persistent and closed. The caller must use brDeleteTap to remove - * a persistent TAP devices when it is no longer needed. + * descriptor will be returned, otherwise the TAP device will be closed. The + * TAP device will persist after closing the file descriptor if @persist is + * true. The caller must use virNetDevTapDelete to remove a persistent TAP + * devices when it is no longer needed. * * Returns 0 in case of success or an errno code in case of failure. */ int virNetDevTapCreate(char **ifname, int vnet_hdr ATTRIBUTE_UNUSED, - int *tapfd) + int *tapfd, + bool persist) { int fd; struct ifreq ifr; @@ -156,7 +159,7 @@ int virNetDevTapCreate(char **ifname, goto cleanup; } - if (!tapfd && + if (persist && (errno = ioctl(fd, TUNSETPERSIST, 1))) { virReportSystemError(errno, _("Unable to set tap device %s to persistent"), @@ -249,14 +252,16 @@ int virNetDevTapDelete(const char *ifname ATTRIBUTE_UNUSED) * @macaddr: desired MAC address (VIR_MAC_BUFLEN long) * @vnet_hdr: whether to try enabling IFF_VNET_HDR * @tapfd: file descriptor return value for the new tap device + * @persist: if the device persists after the file descriptor is closed * * This function creates a new tap device on a bridge. @ifname can be either * a fixed name or a name template with '%d' for dynamic name allocation. * in either case the final name for the bridge will be stored in @ifname. * If the @tapfd parameter is supplied, the open tap device file - * descriptor will be returned, otherwise the TAP device will be made - * persistent and closed. The caller must use brDeleteTap to remove - * a persistent TAP devices when it is no longer needed. + * descriptor will be returned, otherwise the TAP device will be closed. The + * TAP device will persist after closing the file descriptor if @persist is + * true. The caller must use virNetDevTapDelete to remove a persistent TAP + * devices when it is no longer needed. * * Returns 0 in case of success or -1 on failure */ @@ -264,10 +269,10 @@ int virNetDevTapCreateInBridgePort(const char *brname, char **ifname, const unsigned char *macaddr, int vnet_hdr, - bool up, - int *tapfd) + int *tapfd, + bool persist) { - if (virNetDevTapCreate(ifname, vnet_hdr, tapfd) < 0) + if (virNetDevTapCreate(ifname, vnet_hdr, tapfd, persist) < 0) return -1; /* We need to set the interface MAC before adding it @@ -289,7 +294,7 @@ int virNetDevTapCreateInBridgePort(const char *brname, if (virNetDevBridgeAddPort(brname, *ifname) < 0) goto error; - if (virNetDevSetOnline(*ifname, up) < 0) + if (virNetDevSetOnline(*ifname, true) < 0) goto error; return 0; diff --git a/src/util/virnetdevtap.h b/src/util/virnetdevtap.h index fb35ac5..6aff641 100644 --- a/src/util/virnetdevtap.h +++ b/src/util/virnetdevtap.h @@ -27,7 +27,8 @@ int virNetDevTapCreate(char **ifname, int vnet_hdr, - int *tapfd) + int *tapfd, + bool persist) ATTRIBUTE_NONNULL(1) ATTRIBUTE_RETURN_CHECK; int virNetDevTapDelete(const char *ifname) @@ -37,8 +38,8 @@ int virNetDevTapCreateInBridgePort(const char *brname, char **ifname, const unsigned char *macaddr, int vnet_hdr, - bool up, - int *tapfd) + int *tapfd, + bool persist) ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2) ATTRIBUTE_NONNULL(3) ATTRIBUTE_RETURN_CHECK; -- Benjamin Cama <benjamin.cama(a)telecom-bretagne.eu>

4 19

[libvirt] [PATCH 0/2] Fixed QEMU 1.0.1 support
by Dmitry Fleytman 27 Sep '12

27 Sep '12

This patch fixes incorrect help screen parsing for QEMU 1.0.1 package Version line changed from QEMU emulator version 1.0 (qemu-kvm-1.0), Copyright (c) 2003-2008 Fabrice Bellard To QEMU emulator version 1.0,1 (qemu-kvm-1.0.1), Copyright (c) 2003-2008 Fabrice Bellard Comma in version number hits parsing logic and leads to incorrect capabilities list. Particularity KVM support capability is not detected making problems in various scenarious. The patch treats the newly added 1 as a micro version number, not sure this is legitimate. Please, correct me if I'm wrong. Signed-off-by: Dmitry Fleytman dmitry(a)daynix.com Dmitry Fleytman (2): Incorrect help screen parsing for QEMU 1.0.1 package fixed Test for QEMU 1.0.1 help screen parsing added src/qemu/qemu_capabilities.c | 13 +- tests/qemuhelpdata/qemu-1.0.1 | 261 +++++++++++++++++++++++++++++++++++ tests/qemuhelpdata/qemu-1.0.1-device | 138 ++++++++++++++++++ tests/qemuhelptest.c | 73 ++++++++++ 4 files changed, 481 insertions(+), 4 deletions(-) create mode 100644 tests/qemuhelpdata/qemu-1.0.1 create mode 100644 tests/qemuhelpdata/qemu-1.0.1-device -- 1.7.11.4

6 17

[libvirt] [PATCH] Support Xen sysctl version 9 in Xen 4.2
by Jim Fehlig 27 Sep '12

27 Sep '12

Xen upstream c/s 24102:dc8e55c9 bumped the sysctl version to 9. Support this sysctl version in the xen_hypervisor sub-driver. --- src/xen/xen_hypervisor.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/src/xen/xen_hypervisor.c b/src/xen/xen_hypervisor.c index fdc3071..3244bbd 100644 --- a/src/xen/xen_hypervisor.c +++ b/src/xen/xen_hypervisor.c @@ -2164,6 +2164,18 @@ xenHypervisorInit(struct xenHypervisorVersions *override_versions) goto done; } + /* Xen 4.2 + * sysctl version 9 -> xen-unstable c/s 24102:dc8e55c90604 + * domctl version 8 -> unchanged from Xen 4.1 + */ + hv_versions.sys_interface = 9; /* XEN_SYSCTL_INTERFACE_VERSION */ + if (virXen_getdomaininfo(fd, 0, &info) == 1) { + hv_versions.dom_interface = 8; /* XEN_DOMCTL_INTERFACE_VERSION */ + if (virXen_getvcpusinfo(fd, 0, 0, ipt, NULL, 0) == 0){ + VIR_DEBUG("Using hypervisor call v2, sys ver9 dom ver8"); + goto done; + } + } /* * we failed to make the getdomaininfolist hypercall -- 1.7.10.4

3 2

[libvirt] [PATCH] build: avoid older gcc warning
by Eric Blake 27 Sep '12

27 Sep '12

Jim Fehlig reported a compilation error with older gcc 4.3.4: libvirt.c: In function 'virDomainGetEmulatorPinInfo': libvirt.c:9111: error: logical '&&' with non-zero constant will always evaluate as true [-Wlogical-op] It looks like someone programmed via too much copy-and-paste. * src/libvirt.c (virDomainGetEmulatorPinInfo): Multiplying by 1 is a no-op, and thus will never overflow. --- Pushing under the build-breaker rule. src/libvirt.c | 5 ----- 1 file changed, 5 deletions(-) diff --git a/src/libvirt.c b/src/libvirt.c index 43591c0..ada9a86 100644 --- a/src/libvirt.c +++ b/src/libvirt.c @@ -9108,11 +9108,6 @@ virDomainGetEmulatorPinInfo(virDomainPtr domain, unsigned char *cpumap, virLibDomainError(VIR_ERR_INVALID_ARG, __FUNCTION__); goto error; } - if (INT_MULTIPLY_OVERFLOW(1, maplen)) { - virLibDomainError(VIR_ERR_OVERFLOW, _("input too large: 1 * %d"), - maplen); - goto error; - } /* At most one of these two flags should be set. */ if ((flags & VIR_DOMAIN_AFFECT_LIVE) && -- 1.7.11.4

1 0

[libvirt] [PATCH] Don't skip over socket label cleanup
by Daniel P. Berrange 27 Sep '12

27 Sep '12

From: "Daniel P. Berrange" <berrange(a)redhat.com> If QEMU quits immediately after we opened the monitor it was possible we would skip the clearing of the SELinux process socket context Signed-off-by: Daniel P. Berrange <berrange(a)redhat.com> --- src/qemu/qemu_process.c | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-) diff --git a/src/qemu/qemu_process.c b/src/qemu/qemu_process.c index 70b72af..ade64b7 100644 --- a/src/qemu/qemu_process.c +++ b/src/qemu/qemu_process.c @@ -1242,12 +1242,11 @@ qemuConnectMonitor(struct qemud_driver *driver, virDomainObjPtr vm) virDomainObjLock(vm); priv->monStart = 0; - if (mon == NULL) + if (mon == NULL) { virObjectUnref(vm); - - if (!virDomainObjIsActive(vm)) { + } else if (!virDomainObjIsActive(vm)) { qemuMonitorClose(mon); - goto error; + mon = NULL; } priv->mon = mon; -- 1.7.11.2

2 1

[libvirt] [PATCH] Fix potential deadlock when agent is closed
by Daniel P. Berrange 27 Sep '12

27 Sep '12

From: "Daniel P. Berrange" <berrange(a)redhat.com> If the qemuAgentClose method is called from a place which holds the domain lock, it is theoretically possible to get a deadlock in the agent destroy callback. This has not ben observed, but the equivalent code in the QEMU monitor destroy callback has seen a deadlock. Remove the redundant locking while unrefing the object and the bogus assignment Signed-off-by: Daniel P. Berrange <berrange(a)redhat.com> --- src/qemu/qemu_process.c | 12 +++--------- 1 file changed, 3 insertions(+), 9 deletions(-) diff --git a/src/qemu/qemu_process.c b/src/qemu/qemu_process.c index c8c188a..42da617 100644 --- a/src/qemu/qemu_process.c +++ b/src/qemu/qemu_process.c @@ -129,7 +129,8 @@ qemuProcessHandleAgentEOF(qemuAgentPtr agent, virDomainObjLock(vm); priv = vm->privateData; - priv->agent = NULL; + if (priv->agent == agent) + priv->agent = NULL; virDomainObjUnlock(vm); qemuDriverUnlock(driver); @@ -167,16 +168,9 @@ qemuProcessHandleAgentError(qemuAgentPtr agent ATTRIBUTE_UNUSED, static void qemuProcessHandleAgentDestroy(qemuAgentPtr agent, virDomainObjPtr vm) { - qemuDomainObjPrivatePtr priv; - VIR_DEBUG("Received destroy agent=%p vm=%p", agent, vm); - virDomainObjLock(vm); - priv = vm->privateData; - if (priv->agent == agent) - priv->agent = NULL; - if (virObjectUnref(vm)) - virDomainObjUnlock(vm); + virObjectUnref(vm); } -- 1.7.11.2

2 1

[libvirt] [PATCH] Use size_t instead of int for virDomainDefPtr struct
by Daniel P. Berrange 27 Sep '12

27 Sep '12

From: "Daniel P. Berrange" <berrange(a)redhat.com> Many parts of virDomainDefPtr were using 'int' variables as array length counts. Replace all these with size_t and update various format strings & API signatures to adapt --- src/conf/domain_conf.c | 28 ++++++++++++++-------------- src/conf/domain_conf.h | 40 ++++++++++++++++++++-------------------- src/lxc/lxc_controller.c | 4 ++-- src/parallels/parallels_driver.c | 2 +- src/qemu/qemu_hotplug.c | 2 +- src/vbox/vbox_tmpl.c | 8 ++++---- src/vmx/vmx.c | 2 +- 7 files changed, 43 insertions(+), 43 deletions(-) diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c index 0514540..33e1e7f 100644 --- a/src/conf/domain_conf.c +++ b/src/conf/domain_conf.c @@ -10942,7 +10942,7 @@ bool virDomainDefCheckABIStability(virDomainDefPtr src, if (src->ndisks != dst->ndisks) { virReportError(VIR_ERR_CONFIG_UNSUPPORTED, - _("Target domain disk count %d does not match source %d"), + _("Target domain disk count %zu does not match source %zu"), dst->ndisks, src->ndisks); goto cleanup; } @@ -10953,7 +10953,7 @@ bool virDomainDefCheckABIStability(virDomainDefPtr src, if (src->ncontrollers != dst->ncontrollers) { virReportError(VIR_ERR_CONFIG_UNSUPPORTED, - _("Target domain disk controller count %d does not match source %d"), + _("Target domain disk controller count %zu does not match source %zu"), dst->ncontrollers, src->ncontrollers); goto cleanup; } @@ -10964,7 +10964,7 @@ bool virDomainDefCheckABIStability(virDomainDefPtr src, if (src->nfss != dst->nfss) { virReportError(VIR_ERR_CONFIG_UNSUPPORTED, - _("Target domain filesystem count %d does not match source %d"), + _("Target domain filesystem count %zu does not match source %zu"), dst->nfss, src->nfss); goto cleanup; } @@ -10975,7 +10975,7 @@ bool virDomainDefCheckABIStability(virDomainDefPtr src, if (src->nnets != dst->nnets) { virReportError(VIR_ERR_CONFIG_UNSUPPORTED, - _("Target domain net card count %d does not match source %d"), + _("Target domain net card count %zu does not match source %zu"), dst->nnets, src->nnets); goto cleanup; } @@ -10986,7 +10986,7 @@ bool virDomainDefCheckABIStability(virDomainDefPtr src, if (src->ninputs != dst->ninputs) { virReportError(VIR_ERR_CONFIG_UNSUPPORTED, - _("Target domain input device count %d does not match source %d"), + _("Target domain input device count %zu does not match source %zu"), dst->ninputs, src->ninputs); goto cleanup; } @@ -10997,7 +10997,7 @@ bool virDomainDefCheckABIStability(virDomainDefPtr src, if (src->nsounds != dst->nsounds) { virReportError(VIR_ERR_CONFIG_UNSUPPORTED, - _("Target domain sound card count %d does not match source %d"), + _("Target domain sound card count %zu does not match source %zu"), dst->nsounds, src->nsounds); goto cleanup; } @@ -11008,7 +11008,7 @@ bool virDomainDefCheckABIStability(virDomainDefPtr src, if (src->nvideos != dst->nvideos) { virReportError(VIR_ERR_CONFIG_UNSUPPORTED, - _("Target domain video card count %d does not match source %d"), + _("Target domain video card count %zu does not match source %zu"), dst->nvideos, src->nvideos); goto cleanup; } @@ -11019,7 +11019,7 @@ bool virDomainDefCheckABIStability(virDomainDefPtr src, if (src->nhostdevs != dst->nhostdevs) { virReportError(VIR_ERR_CONFIG_UNSUPPORTED, - _("Target domain host device count %d does not match source %d"), + _("Target domain host device count %zu does not match source %zu"), dst->nhostdevs, src->nhostdevs); goto cleanup; } @@ -11030,7 +11030,7 @@ bool virDomainDefCheckABIStability(virDomainDefPtr src, if (src->nsmartcards != dst->nsmartcards) { virReportError(VIR_ERR_CONFIG_UNSUPPORTED, - _("Target domain smartcard count %d does not match source %d"), + _("Target domain smartcard count %zu does not match source %zu"), dst->nsmartcards, src->nsmartcards); goto cleanup; } @@ -11041,7 +11041,7 @@ bool virDomainDefCheckABIStability(virDomainDefPtr src, if (src->nserials != dst->nserials) { virReportError(VIR_ERR_CONFIG_UNSUPPORTED, - _("Target domain serial port count %d does not match source %d"), + _("Target domain serial port count %zu does not match source %zu"), dst->nserials, src->nserials); goto cleanup; } @@ -11052,7 +11052,7 @@ bool virDomainDefCheckABIStability(virDomainDefPtr src, if (src->nparallels != dst->nparallels) { virReportError(VIR_ERR_CONFIG_UNSUPPORTED, - _("Target domain parallel port count %d does not match source %d"), + _("Target domain parallel port count %zu does not match source %zu"), dst->nparallels, src->nparallels); goto cleanup; } @@ -11063,7 +11063,7 @@ bool virDomainDefCheckABIStability(virDomainDefPtr src, if (src->nchannels != dst->nchannels) { virReportError(VIR_ERR_CONFIG_UNSUPPORTED, - _("Target domain channel count %d does not match source %d"), + _("Target domain channel count %zu does not match source %zu"), dst->nchannels, src->nchannels); goto cleanup; } @@ -11074,7 +11074,7 @@ bool virDomainDefCheckABIStability(virDomainDefPtr src, if (src->nconsoles != dst->nconsoles) { virReportError(VIR_ERR_CONFIG_UNSUPPORTED, - _("Target domain console count %d does not match source %d"), + _("Target domain console count %zu does not match source %zu"), dst->nconsoles, src->nconsoles); goto cleanup; } @@ -11085,7 +11085,7 @@ bool virDomainDefCheckABIStability(virDomainDefPtr src, if (src->nhubs != dst->nhubs) { virReportError(VIR_ERR_CONFIG_UNSUPPORTED, - _("Target domain hub device count %d does not match source %d"), + _("Target domain hub device count %zu does not match source %zu"), dst->nhubs, src->nhubs); goto cleanup; } diff --git a/src/conf/domain_conf.h b/src/conf/domain_conf.h index 1a61318..14dead3 100644 --- a/src/conf/domain_conf.h +++ b/src/conf/domain_conf.h @@ -552,7 +552,7 @@ struct _virDomainDiskDef { char *dst; int tray_status; int protocol; - int nhosts; + size_t nhosts; virDomainDiskHostDefPtr hosts; struct { char *username; @@ -1048,7 +1048,7 @@ struct _virDomainSoundDef { int model; virDomainDeviceInfo info; - int ncodecs; + size_t ncodecs; virDomainSoundCodecDefPtr *codecs; }; @@ -1443,7 +1443,7 @@ struct _virDomainOSDef { char *type; char *arch; char *machine; - int nBootDevs; + size_t nBootDevs; int bootDevs[VIR_DOMAIN_BOOT_LAST]; /* enum virDomainBootMenu */ int bootmenu; @@ -1575,7 +1575,7 @@ struct _virDomainClockDef { char *timezone; } data; - int ntimers; + size_t ntimers; virDomainTimerDefPtr *timers; }; @@ -1695,55 +1695,55 @@ struct _virDomainDef { virDomainClockDef clock; - int ngraphics; + size_t ngraphics; virDomainGraphicsDefPtr *graphics; - int ndisks; + size_t ndisks; virDomainDiskDefPtr *disks; - int ncontrollers; + size_t ncontrollers; virDomainControllerDefPtr *controllers; - int nfss; + size_t nfss; virDomainFSDefPtr *fss; - int nnets; + size_t nnets; virDomainNetDefPtr *nets; - int ninputs; + size_t ninputs; virDomainInputDefPtr *inputs; - int nsounds; + size_t nsounds; virDomainSoundDefPtr *sounds; - int nvideos; + size_t nvideos; virDomainVideoDefPtr *videos; - int nhostdevs; + size_t nhostdevs; virDomainHostdevDefPtr *hostdevs; - int nredirdevs; + size_t nredirdevs; virDomainRedirdevDefPtr *redirdevs; - int nsmartcards; + size_t nsmartcards; virDomainSmartcardDefPtr *smartcards; - int nserials; + size_t nserials; virDomainChrDefPtr *serials; - int nparallels; + size_t nparallels; virDomainChrDefPtr *parallels; - int nchannels; + size_t nchannels; virDomainChrDefPtr *channels; - int nconsoles; + size_t nconsoles; virDomainChrDefPtr *consoles; size_t nleases; virDomainLeaseDefPtr *leases; - int nhubs; + size_t nhubs; virDomainHubDefPtr *hubs; size_t nseclabels; diff --git a/src/lxc/lxc_controller.c b/src/lxc/lxc_controller.c index d407e70..68f857a 100644 --- a/src/lxc/lxc_controller.c +++ b/src/lxc/lxc_controller.c @@ -319,7 +319,7 @@ static int virLXCControllerValidateNICs(virLXCControllerPtr ctrl) { if (ctrl->def->nnets != ctrl->nveths) { virReportError(VIR_ERR_INTERNAL_ERROR, - _("expecting %d veths, but got %zu"), + _("expecting %zu veths, but got %zu"), ctrl->def->nnets, ctrl->nveths); return -1; } @@ -332,7 +332,7 @@ static int virLXCControllerValidateConsoles(virLXCControllerPtr ctrl) { if (ctrl->def->nconsoles != ctrl->nconsoles) { virReportError(VIR_ERR_INTERNAL_ERROR, - _("expecting %d consoles, but got %zu tty file handlers"), + _("expecting %zu consoles, but got %zu tty file handlers"), ctrl->def->nconsoles, ctrl->nconsoles); return -1; } diff --git a/src/parallels/parallels_driver.c b/src/parallels/parallels_driver.c index 20ee361..a938199 100644 --- a/src/parallels/parallels_driver.c +++ b/src/parallels/parallels_driver.c @@ -222,7 +222,7 @@ parallelsGetSerialInfo(virDomainChrDefPtr chr, } static int -parallelsAddSerialInfo(virDomainChrDefPtr **serials, int *nserials, +parallelsAddSerialInfo(virDomainChrDefPtr **serials, size_t *nserials, const char *key, virJSONValuePtr value) { virDomainChrDefPtr chr = NULL; diff --git a/src/qemu/qemu_hotplug.c b/src/qemu/qemu_hotplug.c index bcf3081..a738b19 100644 --- a/src/qemu/qemu_hotplug.c +++ b/src/qemu/qemu_hotplug.c @@ -2090,7 +2090,7 @@ int qemuDomainDetachThisHostDevice(struct qemud_driver *driver, } if (idx >= vm->def->nhostdevs) { virReportError(VIR_ERR_INTERNAL_ERROR, - _("device not found in hostdevs list (%d entries)"), + _("device not found in hostdevs list (%zu entries)"), vm->def->nhostdevs); return ret; } diff --git a/src/vbox/vbox_tmpl.c b/src/vbox/vbox_tmpl.c index 4f2d025..29b776d 100644 --- a/src/vbox/vbox_tmpl.c +++ b/src/vbox/vbox_tmpl.c @@ -3786,7 +3786,7 @@ vboxSetBootDeviceOrder(virDomainDefPtr def, vboxGlobalData *data, VIR_DEBUG("def->os.type %s", def->os.type); VIR_DEBUG("def->os.arch %s", def->os.arch); VIR_DEBUG("def->os.machine %s", def->os.machine); - VIR_DEBUG("def->os.nBootDevs %d", def->os.nBootDevs); + VIR_DEBUG("def->os.nBootDevs %zu", def->os.nBootDevs); VIR_DEBUG("def->os.bootDevs[0] %d", def->os.bootDevs[0]); VIR_DEBUG("def->os.bootDevs[1] %d", def->os.bootDevs[1]); VIR_DEBUG("def->os.bootDevs[2] %d", def->os.bootDevs[2]); @@ -4376,7 +4376,7 @@ vboxAttachNetwork(virDomainDefPtr def, vboxGlobalData *data, IMachine *machine) systemProperties = NULL; } - VIR_DEBUG("Number of Network Cards to be connected: %d", def->nnets); + VIR_DEBUG("Number of Network Cards to be connected: %zu", def->nnets); VIR_DEBUG("Number of Network Cards available: %d", networkAdapterCount); for (i = 0; (i < def->nnets) && (i < networkAdapterCount); i++) { @@ -4538,7 +4538,7 @@ vboxAttachSerial(virDomainDefPtr def, vboxGlobalData *data, IMachine *machine) systemProperties = NULL; } - VIR_DEBUG("Number of Serial Ports to be connected: %d", def->nserials); + VIR_DEBUG("Number of Serial Ports to be connected: %zu", def->nserials); VIR_DEBUG("Number of Serial Ports available: %d", serialPortCount); for (i = 0; (i < def->nserials) && (i < serialPortCount); i++) { ISerialPort *serialPort = NULL; @@ -4617,7 +4617,7 @@ vboxAttachParallel(virDomainDefPtr def, vboxGlobalData *data, IMachine *machine) systemProperties = NULL; } - VIR_DEBUG("Number of Parallel Ports to be connected: %d", def->nparallels); + VIR_DEBUG("Number of Parallel Ports to be connected: %zu", def->nparallels); VIR_DEBUG("Number of Parallel Ports available: %d", parallelPortCount); for (i = 0; (i < def->nparallels) && (i < parallelPortCount); i++) { IParallelPort *parallelPort = NULL; diff --git a/src/vmx/vmx.c b/src/vmx/vmx.c index 1ccd931..e051de5 100644 --- a/src/vmx/vmx.c +++ b/src/vmx/vmx.c @@ -3299,7 +3299,7 @@ virVMXFormatConfig(virVMXContext *ctx, virCapsPtr caps, virDomainDefPtr def, /* def:fss */ if (def->nfss > 0) { virBufferAddLit(&buffer, "isolation.tools.hgfs.disable = \"false\"\n"); - virBufferAsprintf(&buffer, "sharedFolder.maxNum = \"%d\"\n", def->nfss); + virBufferAsprintf(&buffer, "sharedFolder.maxNum = \"%zu\"\n", def->nfss); } for (i = 0; i < def->nfss; ++i) { -- 1.7.11.2

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