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[libvirt] [PATCH] avoid format-related warnings
by Jim Meyering 01 Feb '10

01 Feb '10

FYI, more of these. No need to review. I'll push shortly. >From 4cd188d4d5e4ffebdc026dee9179d2a97c02d3f5 Mon Sep 17 00:00:00 2001 From: Jim Meyering <meyering(a)redhat.com> Date: Mon, 1 Feb 2010 18:25:23 +0100 Subject: [PATCH] avoid format-related warnings * src/qemu/qemu_monitor_text.c (qemuMonitorTextGetAllPCIAddresses): Use %s. * src/storage/storage_backend_iscsi.c (virStorageBackendCreateIfaceIQN): Likewise. * tools/virsh.c (cmdSecretSetValue): Likewise. --- src/qemu/qemu_monitor_text.c | 2 +- src/storage/storage_backend_iscsi.c | 4 ++-- tools/virsh.c | 4 ++-- 3 files changed, 5 insertions(+), 5 deletions(-) diff --git a/src/qemu/qemu_monitor_text.c b/src/qemu/qemu_monitor_text.c index 380bcdc..44111e1 100644 --- a/src/qemu/qemu_monitor_text.c +++ b/src/qemu/qemu_monitor_text.c @@ -1959,7 +1959,7 @@ int qemuMonitorTextGetAllPCIAddresses(qemuMonitorPtr mon, if (qemuMonitorCommand(mon, "info pci", &reply) < 0) { qemudReportError(NULL, NULL, NULL, VIR_ERR_OPERATION_FAILED, - _("cannot query PCI addresses")); + "%s", _("cannot query PCI addresses")); return -1; } diff --git a/src/storage/storage_backend_iscsi.c b/src/storage/storage_backend_iscsi.c index 5c657b4..0d3c7b1 100644 --- a/src/storage/storage_backend_iscsi.c +++ b/src/storage/storage_backend_iscsi.c @@ -1,7 +1,7 @@ /* * storage_backend_iscsi.c: storage backend for iSCSI handling * - * Copyright (C) 2007-2008 Red Hat, Inc. + * Copyright (C) 2007-2008, 2010 Red Hat, Inc. * Copyright (C) 2007-2008 Daniel P. Berrange * * This library is free software; you can redistribute it and/or @@ -259,7 +259,7 @@ virStorageBackendCreateIfaceIQN(virConnectPtr conn, char temp_ifacename[32]; if (virRandomInitialize(time(NULL) ^ getpid()) == -1) { - virStorageReportError(conn, VIR_ERR_INTERNAL_ERROR, + virStorageReportError(conn, VIR_ERR_INTERNAL_ERROR, "%s", _("Failed to initialize random generator " "when creating iscsi interface")); goto out; diff --git a/tools/virsh.c b/tools/virsh.c index 1fae5e6..01d2038 100644 --- a/tools/virsh.c +++ b/tools/virsh.c @@ -1,7 +1,7 @@ /* * virsh.c: a Xen shell used to exercise the libvirt API * - * Copyright (C) 2005, 2007-2009 Red Hat, Inc. + * Copyright (C) 2005, 2007-2010 Red Hat, Inc. * * See COPYING.LIB for the License of this software * @@ -5482,7 +5482,7 @@ cmdSecretSetValue(vshControl *ctl, const vshCmd *cmd) goto cleanup; if (!base64_decode_alloc(base64, strlen(base64), &value, &value_size)) { - vshError(ctl, _("Invalid base64 data")); + vshError(ctl, "%s", _("Invalid base64 data")); goto cleanup; } if (value == NULL) { -- 1.7.0.rc1.149.g0b0b7

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[libvirt] [PATCH] cpu_x86.c: avoid NULL-deref for invalid arguments
by Jim Meyering 01 Feb '10

01 Feb '10

Passing a NULL "models" pointer along with a contradictory "nmodels >= 1" would cause a NULL-dereference. An alternative to the fix below would be simply to guard the NULL-derferencing strcmp with "if (models ...", but that wouldn't tell the caller that they're passing bogus arguments. >From f57bd1fbe7a41b1b9d8ba1be61790e95b5060ddc Mon Sep 17 00:00:00 2001 From: Jim Meyering <meyering(a)redhat.com> Date: Tue, 26 Jan 2010 19:58:48 +0100 Subject: [PATCH] cpu_x86.c: avoid NULL-deref for invalid arguments * src/cpu/cpu_x86.c (x86Decode): Do not dereference NULL when "models" is NULL and nmodels is 1 or greater. --- src/cpu/cpu_x86.c | 5 ++++- 1 files changed, 4 insertions(+), 1 deletions(-) diff --git a/src/cpu/cpu_x86.c b/src/cpu/cpu_x86.c index dae7c90..47dc400 100644 --- a/src/cpu/cpu_x86.c +++ b/src/cpu/cpu_x86.c @@ -1,7 +1,7 @@ /* * cpu_x86.c: CPU driver for CPUs with x86 compatible CPUID instruction * - * Copyright (C) 2009 Red Hat, Inc. + * Copyright (C) 2009-2010 Red Hat, Inc. * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public @@ -954,6 +954,9 @@ x86Decode(virCPUDefPtr cpu, if (data == NULL || (map = x86LoadMap()) == NULL) return -1; + if (models == NULL && nmodels != 0) + return -1; + candidate = map->models; while (candidate != NULL) { bool allowed = (models == NULL); -- 1.7.0.rc0.140.gfbe7

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[libvirt] [PATCH] maint: avoid excess parens in STREQ
by Eric Blake 01 Feb '10

01 Feb '10

* src/internal.h (STREQ, STRCASEEQ, STRNEQ, STRCASENEQ, STREQLEN) (STRCASEEQLEN, STRNEQLEN, STRCASENEQLEN, STRPREFIX): Avoid redundant parenthesis. * examples/domain-events/events-c/event-test.c (STREQ): Likewise. * src/storage/parthelper.c (STREQ): Likewise. --- These macros were originally inspired by Jim Meyering, who has since made this same cleanup elsewhere. For example: http://lists.gnu.org/archive/html/bug-gnulib/2010-01/msg00293.html examples/domain-events/events-c/event-test.c | 2 +- src/internal.h | 18 +++++++++--------- src/storage/parthelper.c | 4 ++-- 3 files changed, 12 insertions(+), 12 deletions(-) diff --git a/examples/domain-events/events-c/event-test.c b/examples/domain-events/events-c/event-test.c index b2eb1d5..e8f5505 100644 --- a/examples/domain-events/events-c/event-test.c +++ b/examples/domain-events/events-c/event-test.c @@ -14,7 +14,7 @@ __func__, __LINE__) #define DEBUG(fmt, ...) printf("%s:%d: " fmt "\n", \ __func__, __LINE__, __VA_ARGS__) -#define STREQ(a,b) (strcmp((a),(b)) == 0) +#define STREQ(a,b) (strcmp(a,b) == 0) #ifndef ATTRIBUTE_UNUSED #define ATTRIBUTE_UNUSED __attribute__((__unused__)) diff --git a/src/internal.h b/src/internal.h index 5ca1fa3..ec8a49f 100644 --- a/src/internal.h +++ b/src/internal.h @@ -48,15 +48,15 @@ #define N_(str) dgettext(GETTEXT_PACKAGE, (str)) /* String equality tests, suggested by Jim Meyering. */ -#define STREQ(a,b) (strcmp((a),(b)) == 0) -#define STRCASEEQ(a,b) (strcasecmp((a),(b)) == 0) -#define STRNEQ(a,b) (strcmp((a),(b)) != 0) -#define STRCASENEQ(a,b) (strcasecmp((a),(b)) != 0) -#define STREQLEN(a,b,n) (strncmp((a),(b),(n)) == 0) -#define STRCASEEQLEN(a,b,n) (strncasecmp((a),(b),(n)) == 0) -#define STRNEQLEN(a,b,n) (strncmp((a),(b),(n)) != 0) -#define STRCASENEQLEN(a,b,n) (strncasecmp((a),(b),(n)) != 0) -#define STRPREFIX(a,b) (strncmp((a),(b),strlen((b))) == 0) +#define STREQ(a,b) (strcmp(a,b) == 0) +#define STRCASEEQ(a,b) (strcasecmp(a,b) == 0) +#define STRNEQ(a,b) (strcmp(a,b) != 0) +#define STRCASENEQ(a,b) (strcasecmp(a,b) != 0) +#define STREQLEN(a,b,n) (strncmp(a,b,n) == 0) +#define STRCASEEQLEN(a,b,n) (strncasecmp(a,b,n) == 0) +#define STRNEQLEN(a,b,n) (strncmp(a,b,n) != 0) +#define STRCASENEQLEN(a,b,n) (strncasecmp(a,b,n) != 0) +#define STRPREFIX(a,b) (strncmp(a,b,strlen(b)) == 0) #define NUL_TERMINATE(buf) do { (buf)[sizeof(buf)-1] = '\0'; } while (0) #define ARRAY_CARDINALITY(Array) (sizeof (Array) / sizeof *(Array)) diff --git a/src/storage/parthelper.c b/src/storage/parthelper.c index ab04842..5626cd2 100644 --- a/src/storage/parthelper.c +++ b/src/storage/parthelper.c @@ -10,7 +10,7 @@ * in a reliable fashion if merely after a list of partitions & sizes, * though it is fine for creating partitions. * - * Copyright (C) 2007-2008 Red Hat, Inc. + * Copyright (C) 2007-2008, 2010 Red Hat, Inc. * Copyright (C) 2007-2008 Daniel P. Berrange * * This library is free software; you can redistribute it and/or @@ -37,7 +37,7 @@ #include <string.h> /* we don't need to include the full internal.h just for this */ -#define STREQ(a,b) (strcmp((a),(b)) == 0) +#define STREQ(a,b) (strcmp(a,b) == 0) /* Make the comparisons below fail if your parted headers are so old that they lack the definition. */ -- 1.6.6

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[libvirt] [PATCH] Log flags in virConnectCompareCPU
by Jiri Denemark 01 Feb '10

01 Feb '10

Signed-off-by: Jiri Denemark <jdenemar(a)redhat.com> --- src/libvirt.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/src/libvirt.c b/src/libvirt.c index 32f9fc4..8a9ee20 100644 --- a/src/libvirt.c +++ b/src/libvirt.c @@ -10951,7 +10951,7 @@ virConnectCompareCPU(virConnectPtr conn, const char *xmlDesc, unsigned int flags) { - VIR_DEBUG("conn=%p, xmlDesc=%s", conn, xmlDesc); + VIR_DEBUG("conn=%p, xmlDesc=%s, flags=%u", conn, xmlDesc, flags); virResetLastError(); -- 1.6.6.1

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[libvirt] [PATCH] Fix PCI host reattach on domain detach.
by Chris Lalancette 01 Feb '10

01 Feb '10

Similar to the race fixed by be34c3c7efbb1ea8999530f98b99c5dde3793f84, make sure to wait around for KVM to release the resources from a hot-detached PCI device before attempting to rebind that device to the host driver. Signed-off-by: Chris Lalancette <clalance(a)redhat.com> --- src/qemu/qemu_driver.c | 39 +++++++++++++++++++++++---------------- 1 files changed, 23 insertions(+), 16 deletions(-) diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c index bbdbe33..5bf6743 100644 --- a/src/qemu/qemu_driver.c +++ b/src/qemu/qemu_driver.c @@ -2240,6 +2240,26 @@ cleanup: } static void +qemudReattachManagedDevice(pciDevice *dev) +{ + int retries = 100; + + if (pciDeviceGetManaged(dev)) { + while (pciWaitForDeviceCleanup(dev, "kvm_assigned_device") + && retries) { + usleep(100*1000); + retries--; + } + if (pciReAttachDevice(NULL, dev) < 0) { + virErrorPtr err = virGetLastError(); + VIR_ERROR(_("Failed to re-attach PCI device: %s"), + err ? err->message : ""); + virResetError(err); + } + } +} + +static void qemuDomainReAttachHostDevices(virConnectPtr conn, struct qemud_driver *driver, virDomainDefPtr def) @@ -2279,20 +2299,7 @@ qemuDomainReAttachHostDevices(virConnectPtr conn, for (i = 0; i < pciDeviceListCount(pcidevs); i++) { pciDevice *dev = pciDeviceListGet(pcidevs, i); - int retries = 100; - if (pciDeviceGetManaged(dev)) { - while (pciWaitForDeviceCleanup(dev, "kvm_assigned_device") - && retries) { - usleep(100*1000); - retries--; - } - if (pciReAttachDevice(NULL, dev) < 0) { - virErrorPtr err = virGetLastError(); - VIR_ERROR(_("Failed to re-attach PCI device: %s"), - err ? err->message : ""); - virResetError(err); - } - } + qemudReattachManagedDevice(dev); } pciDeviceListFree(conn, pcidevs); @@ -6128,11 +6135,11 @@ static int qemudDomainDetachHostPciDevice(virConnectPtr conn, if (!pci) ret = -1; else { + pciDeviceSetManaged(pci, detach->managed); pciDeviceListDel(conn, driver->activePciHostdevs, pci); if (pciResetDevice(conn, pci, driver->activePciHostdevs) < 0) ret = -1; - if (detach->managed && pciReAttachDevice(conn, pci) < 0) - ret = -1; + qemudReattachManagedDevice(pci); pciFreeDevice(conn, pci); } -- 1.6.6

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[libvirt] [PATCH] Look in /usr/libexec for the qemu-kvm binary.
by Chris Lalancette 01 Feb '10

01 Feb '10

On RHEL-5 the qemu-kvm binary is located in /usr/libexec. To reduce confusion for people trying to run upstream libvirt on RHEL-5 machines, make the qemu driver look in /usr/libexec for the qemu-kvm binary. To make this work, I modified virFindFileInPath to handle an absolute path correctly. I also ran into an issue where NULL was sometimes being passed for the file parameter to virFindFileInPath; it didn't crash prior to this patch since it was building paths like /usr/bin/(null). This is non-standard behavior, though, so I added a NULL check at the beginning. Signed-off-by: Chris Lalancette <clalance(a)redhat.com> --- src/qemu/qemu_conf.c | 3 ++- src/util/util.c | 13 +++++++++++++ 2 files changed, 15 insertions(+), 1 deletions(-) diff --git a/src/qemu/qemu_conf.c b/src/qemu/qemu_conf.c index f4a6c08..d5e38c2 100644 --- a/src/qemu/qemu_conf.c +++ b/src/qemu/qemu_conf.c @@ -804,7 +804,8 @@ qemudCapsInitGuest(virCapsPtr caps, if (STREQ(info->arch, hostmachine) || (STREQ(hostmachine, "x86_64") && STREQ(info->arch, "i686"))) { if (access("/dev/kvm", F_OK) == 0) { - const char *const kvmbins[] = { "qemu-kvm", /* Fedora */ + const char *const kvmbins[] = { "/usr/libexec/qemu-kvm", /* RHEL */ + "qemu-kvm", /* Fedora */ "kvm" }; /* Upstream .spec */ for (i = 0; i < ARRAY_CARDINALITY(kvmbins); ++i) { diff --git a/src/util/util.c b/src/util/util.c index 0ce5026..394ef35 100644 --- a/src/util/util.c +++ b/src/util/util.c @@ -1114,6 +1114,19 @@ char *virFindFileInPath(const char *file) char *pathseg; char fullpath[PATH_MAX]; + if (file == NULL) + return NULL; + + /* if we are passed an absolute path (starting with /), return a + * copy of that path + */ + if (file[0] == '/') { + if (virFileExists(file)) + return strdup(file); + else + return NULL; + } + /* copy PATH env so we can tweak it */ if (virStrcpyStatic(pathenv, getenv("PATH")) == NULL) return NULL; -- 1.6.6

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[libvirt] [PATCH] Clarify lack of generated IDE -device string in QEMU driver
by Matthew Booth 01 Feb '10

01 Feb '10

The QEMU driver contained code to generate a -device string for piix4-ide, but wasn't using it. This was intentional. This change removes the string generation and adds a comment explaining why no -device is necessary. * src/qemu/qemu_conf.c: Remove VIR_DOMAIN_CONTROLLER_TYPE_IDE handler in qemuBuildControllerDevStr(). Add comments. --- src/qemu/qemu_conf.c | 16 ++++++++-------- 1 files changed, 8 insertions(+), 8 deletions(-) diff --git a/src/qemu/qemu_conf.c b/src/qemu/qemu_conf.c index f4a6c08..1c4f326 100644 --- a/src/qemu/qemu_conf.c +++ b/src/qemu/qemu_conf.c @@ -2121,11 +2121,8 @@ qemuBuildControllerDevStr(virDomainControllerDefPtr def) virBufferVSprintf(&buf, ",id=scsi%d", def->idx); break; + /* We always get an IDE controller, whether we want it or not. */ case VIR_DOMAIN_CONTROLLER_TYPE_IDE: - virBufferAddLit(&buf, "piix4-ide"); - virBufferVSprintf(&buf, ",id=ide%d", def->idx); - break; - default: goto error; } @@ -3141,16 +3138,19 @@ int qemudBuildCommandLine(virConnectPtr conn, if (qemuCmdFlags & QEMUD_CMD_FLAG_DEVICE) { for (i = 0 ; i < def->ncontrollers ; i++) { - char *scsi; - if (def->controllers[i]->type != VIR_DOMAIN_CONTROLLER_TYPE_SCSI) + /* We don't add an explicit IDE controller because the provided + * PIIX4 device already includes one. It isn't possible to remove + * the PIIX4. */ + if (def->controllers[i]->type == VIR_DOMAIN_CONTROLLER_TYPE_IDE) continue; ADD_ARG_LIT("-device"); - if (!(scsi = qemuBuildControllerDevStr(def->controllers[i]))) + char *devstr; + if (!(devstr = qemuBuildControllerDevStr(def->controllers[i]))) goto no_memory; - ADD_ARG(scsi); + ADD_ARG(devstr); } } -- 1.6.6

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[libvirt] Bugfix for RHEL 5.4+ ?? -- Re: Synchronous commands block virsh?
by Andreas Kurz 01 Feb '10

01 Feb '10

Hi list, I found this thread from December: http://www.mail-archive.com/libvir-list@redhat.com/msg18595.htm .... that starting with version 0.7.4 libvirtd will no longer block other API calls, which would be extremely useful in HA clusters in combination with live migration. Will this fix find its way into RHEL 5? Regards, Andreas

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[libvirt] vshRunConsole:77 : unable to open tty
by Ruben Kerkhof 29 Jan '10

29 Jan '10

Hi all, I'm unable to open a serial console to a kvm virtual machine with virsh console: [root@phy003 ~]# virsh console f12 Connected to domain f12 Escape character is ^] 20:43:48.282: error : vshRunConsole:77 : unable to open tty /dev/pts/ 1 : No such file or directory If you look carefully to the message above, there's a space after /dev/ pts/1 I can also see this in the xml: [root@phy003 ~]# virsh dumpxml f12 > f12.xml <console type='pty' tty='/dev/pts/1^M'> <source path='/dev/pts/1^M'/> <target port='0'/> </console> <console type='pty' tty='/dev/pts/1^M'> <source path='/dev/pts/1^M'/> <target port='0'/> </console> I've run gdb over virsh, and this is what virDomainGetXMLDesc returns: <console type='pty' tty='/dev/pts/1\r'> I'm not sure if this has already been fixed, this is libvirt-0.7.5-3.fc12.x86_64 from the rawhide preview repo on F12, with qemu-kvm-0.12.2-4.fc12.x86_64 Any help would be appreciated. Ruben Kerkhof

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[libvirt] [PATCH] maint: fix spelling error in hacking
by Eric Blake 29 Jan '10

29 Jan '10

* HACKING: STRCASEEQ is case insensitive. * docs/hacking.html.in: Likewise. --- HACKING | 4 ++-- docs/hacking.html.in | 4 ++-- 2 files changed, 4 insertions(+), 4 deletions(-) diff --git a/HACKING b/HACKING index 0c65dad..3844e50 100644 --- a/HACKING +++ b/HACKING @@ -222,7 +222,7 @@ one of the following semantically named macros STREQ(a,b) STRNEQ(a,b) - - For case sensitive equality: + - For case insensitive equality: STRCASEEQ(a,b) STRCASENEQ(a,b) @@ -231,7 +231,7 @@ one of the following semantically named macros STREQLEN(a,b,n) STRNEQLEN(a,b,n) - - For case sensitive equality of a substring: + - For case insensitive equality of a substring: STRCASEEQLEN(a,b,n) STRCASENEQLEN(a,b,n) diff --git a/docs/hacking.html.in b/docs/hacking.html.in index 43a79f7..96f6657 100644 --- a/docs/hacking.html.in +++ b/docs/hacking.html.in @@ -256,7 +256,7 @@ </pre> </li> - <li>For case sensitive equality: + <li>For case insensitive equality: <pre> STRCASEEQ(a,b) STRCASENEQ(a,b) @@ -271,7 +271,7 @@ </pre> </li> - <li>For case sensitive equality of a substring: + <li>For case insensitive equality of a substring: <pre> STRCASEEQLEN(a,b,n) -- 1.6.6

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