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[libvirt] [PATCH 0/2] rework virFileCreate into virFileOperation w/hook function
by Laine Stump 20 Feb '10

20 Feb '10

(This patchset requires that the virFork() patchset I send a couple hours ago be applied first, otherwise it will fail to apply). virFileCreate just didn't have what it takes to get the job done. It turns out that there are other things that must be done to files as the qemu (or whatever) user, so this patchset adds a hook function that gets called during the child process. That solves a problem I found with creating raw storage volumes on root-squash NFS, and will also be used for an upcoming domain-save-on-root-squash-nfs patch. I'm now beginning to think that virFileCreate/virFileOperation is just too narrow in scope, and it's getting too many options. Possibly it will be better to just make a simpler virCallasUID() function that gets a pointer to a function to execute in the child process as an argument and does nothing but fork/setuid/call the function. That function would then contain *all* of the file operations, including creating/opening/closing the file. But that's too large of a change to contemplate so soon before a release, and this functionality is necessary for two important bug fixes (mentioned above), so...

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[libvirt] [PATCH v2] remote: Print ssh stderr on connection failure
by Cole Robinson 20 Feb '10

20 Feb '10

Signed-off-by: Cole Robinson <crobinso(a)redhat.com> --- src/remote/remote_driver.c | 38 +++++++++++++++++++++++++++++++++++--- 1 files changed, 35 insertions(+), 3 deletions(-) diff --git a/src/remote/remote_driver.c b/src/remote/remote_driver.c index 13534ce..8914c39 100644 --- a/src/remote/remote_driver.c +++ b/src/remote/remote_driver.c @@ -154,6 +154,7 @@ struct private_data { virMutex lock; int sock; /* Socket. */ + int errfd; /* File handle connected to remote stderr */ int watch; /* File handle watch */ pid_t pid; /* PID of tunnel process */ int uses_tls; /* TLS enabled on socket? */ @@ -783,6 +784,7 @@ doRemoteOpen (virConnectPtr conn, case trans_ext: { pid_t pid; int sv[2]; + int errfd[2]; /* Fork off the external process. Use socketpair to create a private * (unnamed) Unix domain socket to the child process so we don't have @@ -794,14 +796,22 @@ doRemoteOpen (virConnectPtr conn, goto failed; } + if (pipe(errfd) == -1) { + virReportSystemError(errno, "%s", + _("unable to create socket pair")); + goto failed; + } + if (virExec((const char**)cmd_argv, NULL, NULL, - &pid, sv[1], &(sv[1]), NULL, + &pid, sv[1], &(sv[1]), &(errfd[1]), VIR_EXEC_CLEAR_CAPS) < 0) goto failed; /* Parent continues here. */ close (sv[1]); + close (errfd[1]); priv->sock = sv[0]; + priv->errfd = errfd[0]; priv->pid = pid; /* Do not set 'is_secure' flag since we can't guarentee @@ -827,6 +837,12 @@ doRemoteOpen (virConnectPtr conn, goto failed; } + if ((priv->errfd != -1) && virSetNonBlock(priv->errfd) < 0) { + virReportSystemError(errno, "%s", + _("unable to make socket non-blocking")); + goto failed; + } + if (pipe(wakeupFD) < 0) { virReportSystemError(errno, "%s", _("unable to make pipe")); @@ -939,6 +955,9 @@ doRemoteOpen (virConnectPtr conn, failed: /* Close the socket if we failed. */ + if (priv->errfd >= 0) + close(priv->errfd); + if (priv->sock >= 0) { if (priv->uses_tls && priv->session) { gnutls_bye (priv->session, GNUTLS_SHUT_RDWR); @@ -986,6 +1005,7 @@ remoteAllocPrivateData(virConnectPtr conn) priv->localUses = 1; priv->watch = -1; priv->sock = -1; + priv->errfd = -1; return priv; } @@ -1408,6 +1428,7 @@ doRemoteClose (virConnectPtr conn, struct private_data *priv) sasl_dispose (&priv->saslconn); #endif close (priv->sock); + close (priv->errfd); #ifndef WIN32 if (priv->pid > 0) { @@ -7785,12 +7806,23 @@ remoteIOReadBuffer(virConnectPtr conn, if (errno == EWOULDBLOCK) return 0; + char errout[1024] = "\0"; + if (priv->errfd != -1) { + saferead(priv->errfd, errout, sizeof(errout)); + } + virReportSystemError(errno, - "%s", _("cannot recv data")); + _("cannot recv data: %s"), errout); + } else { + char errout[1024] = "\0"; + if (priv->errfd != -1) { + saferead(priv->errfd, errout, sizeof(errout)); + } + errorf (in_open ? NULL : conn, VIR_ERR_SYSTEM_ERROR, - "%s", _("server closed connection")); + _("server closed connection: %s"), errout); } return -1; } -- 1.6.5.2

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[libvirt] [PATCH v2] qemu: Check for IA64 kvm
by Cole Robinson 20 Feb '10

20 Feb '10

From: Dustin Xiong <x_k_123(a)hotmail.com> ACPI feature bit dropped: I asked internally if the -no-acpi option had any meaning for IA64, and was told 'probably not'. Signed-off-by: Cole Robinson <crobinso(a)redhat.com> --- src/qemu/qemu_conf.c | 1 + 1 files changed, 1 insertions(+), 0 deletions(-) diff --git a/src/qemu/qemu_conf.c b/src/qemu/qemu_conf.c index 79bd1e8..f02db9c 100644 --- a/src/qemu/qemu_conf.c +++ b/src/qemu/qemu_conf.c @@ -394,6 +394,7 @@ static const struct qemu_arch_info const arch_info_hvm[] = { { "mipsel", 32, NULL, "qemu-system-mipsel", NULL, NULL, 0 }, { "sparc", 32, NULL, "qemu-system-sparc", NULL, NULL, 0 }, { "ppc", 32, NULL, "qemu-system-ppc", NULL, NULL, 0 }, + { "itanium", 64, NULL, "qemu-system-ia64", NULL, NULL, 0 }, }; static const struct qemu_arch_info const arch_info_xen[] = { -- 1.6.5.2

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[libvirt] [ PATCH ] fix multiple veth problem for OpenVZ
by Yuji NISHIDA 20 Feb '10

20 Feb '10

Dear all This is to fix multiple veth problem. NETIF setting was overwritten after first CT because any CT could not be found by character name. --- src/openvz/openvz_conf.c | 38 ++++++++++++++++++++++++++++++++++++++ src/openvz/openvz_conf.h | 1 + src/openvz/openvz_driver.c | 2 +- 3 files changed, 40 insertions(+), 1 deletions(-) diff --git a/src/openvz/openvz_conf.c b/src/openvz/openvz_conf.c index 43bbaf2..9fb9f7e 100644 --- a/src/openvz/openvz_conf.c +++ b/src/openvz/openvz_conf.c @@ -948,3 +948,41 @@ static int openvzAssignUUIDs(void) VIR_FREE(conf_dir); return 0; } + + +/* + * Return CTID from name + * + */ + +int openvzGetVEID(char *name) { + + char cmd[64]; + int veid; + FILE *fp; + + strcpy( cmd, VZLIST ); + strcat( cmd, " " ); + strcat( cmd, name ); + strcat( cmd, " -ovpsid -H" ); + + if ((fp = popen(cmd, "r")) == NULL) { + openvzError(NULL, VIR_ERR_INTERNAL_ERROR, "%s", _("popen failed")); + return -1; + } + + if (fscanf(fp, "%d\n", &veid ) != 1) { + if (feof(fp)) + return -1; + + openvzError(NULL, VIR_ERR_INTERNAL_ERROR, + "%s", _("Failed to parse vzlist output")); + goto cleanup; + } + + return veid; + + cleanup: + fclose(fp); + return -1; +} diff --git a/src/openvz/openvz_conf.h b/src/openvz/openvz_conf.h index 00e18b4..518c267 100644 --- a/src/openvz/openvz_conf.h +++ b/src/openvz/openvz_conf.h @@ -66,5 +66,6 @@ void openvzFreeDriver(struct openvz_driver *driver); int strtoI(const char *str); int openvzSetDefinedUUID(int vpsid, unsigned char *uuid); unsigned int openvzGetNodeCPUs(void); +int openvzGetVEID(char *name); #endif /* OPENVZ_CONF_H */ diff --git a/src/openvz/openvz_driver.c b/src/openvz/openvz_driver.c index 196fd8c..879b5d0 100644 --- a/src/openvz/openvz_driver.c +++ b/src/openvz/openvz_driver.c @@ -667,7 +667,7 @@ openvzDomainSetNetwork(virConnectPtr conn, const char *vpsid, if (net->type == VIR_DOMAIN_NET_TYPE_BRIDGE) { virBuffer buf = VIR_BUFFER_INITIALIZER; char *dev_name_ve; - int veid = strtoI(vpsid); + int veid = openvzGetVEID(vpsid); //--netif_add ifname[,mac,host_ifname,host_mac] ADD_ARG_LIT("--netif_add") ; -- 1.5.2.2 ----- Yuji Nishida nishidy(a)nict.go.jp

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[libvirt] [PATCH] Make an error message in PCI util code clearer.
by Chris Lalancette 20 Feb '10

20 Feb '10

Signed-off-by: Chris Lalancette <clalance(a)redhat.com> --- src/util/pci.c | 4 ++-- 1 files changed, 2 insertions(+), 2 deletions(-) diff --git a/src/util/pci.c b/src/util/pci.c index aa8344e..83ed461 100644 --- a/src/util/pci.c +++ b/src/util/pci.c @@ -540,7 +540,7 @@ pciTrySecondaryBusReset(pciDevice *dev, */ if (pciRead(dev, 0, config_space, PCI_CONF_LEN) < 0) { pciReportError(VIR_ERR_NO_SUPPORT, - _("Failed to save PCI config space for %s"), + _("Failed to read PCI config space for %s"), dev->name); goto out; } @@ -586,7 +586,7 @@ pciTryPowerManagementReset(pciDevice *dev) /* Save and restore the device's config space. */ if (pciRead(dev, 0, &config_space[0], PCI_CONF_LEN) < 0) { pciReportError(VIR_ERR_NO_SUPPORT, - _("Failed to save PCI config space for %s"), + _("Failed to read PCI config space for %s"), dev->name); return -1; } -- 1.6.6

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[libvirt] [PATCH] [FIX] macvtap mac_filter support
by Stefan Berger 19 Feb '10

19 Feb '10

Previous posting had an unused variable in the compile case of --without-macvtap. This patch adds the mac_filter support to the macvtap device. Signed-off-by: Stefan Berger <stefanb(a)us.ibm.com>

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[libvirt] [PATCH 1/4] qemu: Make Set*Mem commands hotplug only
by Cole Robinson 19 Feb '10

19 Feb '10

SetMem and SetMaxMem are hotplug only APIs, any persistent config changes are supposed to go via XML definition. The original implementation of these calls were incorrect and had the nasty side effect of making a psuedo persistent change that would be lost after libvirtd restart (I didn't know any better). Fix these APIs to rightly reject non running domains. --- src/qemu/qemu_driver.c | 54 ++++++++++++++++++++++++++++------------------- 1 files changed, 32 insertions(+), 22 deletions(-) diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c index a2be1a3..56a450c 100644 --- a/src/qemu/qemu_driver.c +++ b/src/qemu/qemu_driver.c @@ -3625,14 +3625,21 @@ static int qemudDomainSetMaxMemory(virDomainPtr dom, unsigned long newmax) { goto cleanup; } + if (!virDomainObjIsActive(vm)) { + qemuReportError(VIR_ERR_OPERATION_INVALID, + "%s", _("domain is not running")); + goto cleanup; + } + if (newmax < vm->def->memory) { - qemuReportError(VIR_ERR_INVALID_ARG, - "%s", _("cannot set max memory lower than current memory")); - goto cleanup;; + qemuReportError(VIR_ERR_INVALID_ARG, "%s", + _("cannot set max memory lower than current memory")); + goto cleanup; } - vm->def->maxmem = newmax; - ret = 0; + /* There isn't any way to change this value for a running qemu guest */ + qemuReportError(VIR_ERR_NO_SUPPORT, + "%s", _("cannot set max memory of an active domain")); cleanup: if (vm) @@ -3643,8 +3650,9 @@ cleanup: static int qemudDomainSetMemory(virDomainPtr dom, unsigned long newmem) { struct qemud_driver *driver = dom->conn->privateData; + qemuDomainObjPrivatePtr priv; virDomainObjPtr vm; - int ret = -1; + int ret = -1, r; qemuDriverLock(driver); vm = virDomainFindByUUID(&driver->domains, dom->uuid); @@ -3657,6 +3665,12 @@ static int qemudDomainSetMemory(virDomainPtr dom, unsigned long newmem) { goto cleanup; } + if (!virDomainObjIsActive(vm)) { + qemuReportError(VIR_ERR_OPERATION_INVALID, + "%s", _("domain is not running")); + goto cleanup; + } + if (newmem > vm->def->maxmem) { qemuReportError(VIR_ERR_INVALID_ARG, "%s", _("cannot set memory higher than max memory")); @@ -3666,25 +3680,21 @@ static int qemudDomainSetMemory(virDomainPtr dom, unsigned long newmem) { if (qemuDomainObjBeginJob(vm) < 0) goto cleanup; - if (virDomainObjIsActive(vm)) { - qemuDomainObjPrivatePtr priv = vm->privateData; - qemuDomainObjEnterMonitor(vm); - int r = qemuMonitorSetBalloon(priv->mon, newmem); - qemuDomainObjExitMonitor(vm); - if (r < 0) - goto endjob; + priv = vm->privateData; + qemuDomainObjEnterMonitor(vm); + r = qemuMonitorSetBalloon(priv->mon, newmem); + qemuDomainObjExitMonitor(vm); + if (r < 0) + goto endjob; - /* Lack of balloon support is a fatal error */ - if (r == 0) { - qemuReportError(VIR_ERR_NO_SUPPORT, - "%s", _("cannot set memory of an active domain")); - goto endjob; - } - } else { - vm->def->memory = newmem; + /* Lack of balloon support is a fatal error */ + if (r == 0) { + qemuReportError(VIR_ERR_NO_SUPPORT, + "%s", _("cannot set memory of an active domain")); + goto endjob; } - ret = 0; + ret = 0; endjob: if (qemuDomainObjEndJob(vm) == 0) vm = NULL; -- 1.6.5.2

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[libvirt] [PATCH] virBufferVSprintf: do not skip va_end
by Jim Meyering 19 Feb '10

19 Feb '10

This fixes the last of the varargs problems reported by coverity: va_end(argptr) was never called, and va_end(locarg) would have been skipped upon OOM. >From 7a75b9da0d08a54e9f256dd26cca061b59c32c6d Mon Sep 17 00:00:00 2001 From: Jim Meyering <meyering(a)redhat.com> Date: Thu, 18 Feb 2010 21:25:01 +0100 Subject: [PATCH] virBufferVSprintf: do not skip va_end * src/util/buf.c (virBufferVSprintf): Do not omit or skip va_end calls. --- src/util/buf.c | 7 +++++-- 1 files changed, 5 insertions(+), 2 deletions(-) diff --git a/src/util/buf.c b/src/util/buf.c index cc0a087..caf8ee0 100644 --- a/src/util/buf.c +++ b/src/util/buf.c @@ -246,14 +246,17 @@ virBufferVSprintf(const virBufferPtr buf, const char *format, ...) grow_size = (count > 1000) ? count : 1000; if (virBufferGrow(buf, grow_size) < 0) - return; + goto cleanup; size = buf->size - buf->use - 1; va_copy(locarg, argptr); } - va_end(locarg); buf->use += count; buf->content[buf->use] = '\0'; + + cleanup: + va_end(argptr); + va_end(locarg); } /** -- 1.7.0.233.g05e1a

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[libvirt] [PATCH] macvtap mac_filter support
by Stefan Berger 19 Feb '10

19 Feb '10

This patch adds the mac_filter support to the macvtap device. Signed-off-by: Stefan Berger <stefanb(a)us.ibm.com>

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[libvirt] [PATCH] virsh: be careful to return "FALSE" upon OOM
by Jim Meyering 19 Feb '10

19 Feb '10

Clang reported this as a "dead store" to "ret". Here's one way to fix it. Or just "return FALSE;" and remove the preceding assignment. >From debb6f5198027a056aa24dca95ea4930184ad3fe Mon Sep 17 00:00:00 2001 From: Jim Meyering <meyering(a)redhat.com> Date: Thu, 18 Feb 2010 11:05:38 +0100 Subject: [PATCH] virsh: be careful to return "FALSE" upon OOM * tools/virsh.c (cmdCPUBaseline): Add an explicit "return" statement after the "no_memory:" label. --- tools/virsh.c | 1 + 1 files changed, 1 insertions(+), 0 deletions(-) diff --git a/tools/virsh.c b/tools/virsh.c index e1d1300..dd916f3 100644 --- a/tools/virsh.c +++ b/tools/virsh.c @@ -7141,6 +7141,7 @@ cleanup: no_memory: vshError(ctl, "%s", _("Out of memory")); ret = FALSE; + return ret; } /* Common code for the edit / net-edit / pool-edit functions which follow. */ -- 1.7.0.233.g05e1a

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