[libvirt] [PATCH v2 1/2] add hostdev passthrough common library
Laine Stump
laine at laine.org
Tue Jun 11 17:27:35 UTC 2013
On 06/06/2013 06:00 PM, Chunyan Liu wrote:
> Write separate module for hostdev passthrough common library so that it could be
> used by all hypervisor drivers and maintain a global hostdev state.
>
> Changes to v1:
> * add scsi part to common library
> * instead of hardcode, check for <driver name='kvm/vfio/xen'/> setting, call
> virPCIDeviceSetStubDriver to set stub driver. For libxl driver, a <driver
> name='xen' /> is needed.
> * rebase to current libvirt changes
Ooh, you won't be happy with me... I'm in the process of making some
more changes to virpci.c and qemu_*.c (in order to support vfio groups).
I'll try to indicate places in your "new" code that have/will have their
equivalent existing code changed. (Upon looking through it all -
fortunately most of my changes are in virpci.c, and you haven't changed
that much, but there are still a few things that will need updating).
>
> Signed-off-by: Chunyan Liu <cyliu at suse.com>
> ---
> po/POTFILES.in | 1 +
> src/Makefile.am | 1 +
> src/conf/domain_conf.c | 3 +-
> src/conf/domain_conf.h | 1 +
> src/libvirt.c | 5 +
> src/libvirt_private.syms | 22 +-
> src/util/virhostdevmanager.c | 1486 ++++++++++++++++++++++++++++++++++++++++++
> src/util/virhostdevmanager.h | 109 +++
> src/util/virpci.c | 17 +-
> src/util/virpci.h | 7 +-
> src/util/virscsi.c | 18 +-
> src/util/virscsi.h | 4 +-
> src/util/virusb.c | 19 +-
> src/util/virusb.h | 4 +-
> 14 files changed, 1671 insertions(+), 26 deletions(-)
> create mode 100644 src/util/virhostdevmanager.c
> create mode 100644 src/util/virhostdevmanager.h
>
> diff --git a/po/POTFILES.in b/po/POTFILES.in
> index f3ea4da..a7c21bf 100644
> --- a/po/POTFILES.in
> +++ b/po/POTFILES.in
> @@ -188,6 +188,7 @@ src/util/viruri.c
> src/util/virusb.c
> src/util/virutil.c
> src/util/virxml.c
> +src/util/virhostdevmanager.c
> src/vbox/vbox_MSCOMGlue.c
> src/vbox/vbox_XPCOMCGlue.c
> src/vbox/vbox_driver.c
> diff --git a/src/Makefile.am b/src/Makefile.am
> index 6c626ac..0f09fa5 100644
> --- a/src/Makefile.am
> +++ b/src/Makefile.am
> @@ -130,6 +130,7 @@ UTIL_SOURCES = \
> util/virutil.c util/virutil.h \
> util/viruuid.c util/viruuid.h \
> util/virxml.c util/virxml.h \
> + util/virhostdevmanager.c util/virhostdevmanager.h \
> $(NULL)
>
>
> diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c
> index f0ca9d5..5065d30 100644
> --- a/src/conf/domain_conf.c
> +++ b/src/conf/domain_conf.c
> @@ -594,7 +594,8 @@ VIR_ENUM_IMPL(virDomainHostdevSubsysPciBackend,
> VIR_DOMAIN_HOSTDEV_PCI_BACKEND_TYPE_LAST,
> "default",
> "kvm",
> - "vfio")
> + "vfio",
> + "xen")
I assume that in the libxl driver when no driver name is given, it
defaults to the behavior of "xen", right?
>
> VIR_ENUM_IMPL(virDomainHostdevCaps, VIR_DOMAIN_HOSTDEV_CAPS_TYPE_LAST,
> "storage",
> diff --git a/src/conf/domain_conf.h b/src/conf/domain_conf.h
> index c176a4c..d24ab79 100644
> --- a/src/conf/domain_conf.h
> +++ b/src/conf/domain_conf.h
> @@ -394,6 +394,7 @@ typedef enum {
> VIR_DOMAIN_HOSTDEV_PCI_BACKEND_DEFAULT, /* currently kvm, could change */
> VIR_DOMAIN_HOSTDEV_PCI_BACKEND_KVM, /* force legacy kvm style */
> VIR_DOMAIN_HOSTDEV_PCI_BACKEND_VFIO, /* force vfio */
> + VIR_DOMAIN_HOSTDEV_PCI_BACKEND_XEN, /* force xen */
>
> VIR_DOMAIN_HOSTDEV_PCI_BACKEND_TYPE_LAST
> } virDomainHostdevSubsysPciBackendType;
> diff --git a/src/libvirt.c b/src/libvirt.c
> index 30f9646..1a3032a 100644
> --- a/src/libvirt.c
> +++ b/src/libvirt.c
> @@ -65,6 +65,7 @@
> #include "virthread.h"
> #include "virstring.h"
> #include "virutil.h"
> +#include "virhostdevmanager.h"
>
> #ifdef WITH_TEST
> # include "test/test_driver.h"
> @@ -827,6 +828,7 @@ int virStateInitialize(bool privileged,
> if (virInitialize() < 0)
> return -1;
>
> + virHostdevManagerInit();
AFAIK this function is intended only to initialize stateful drivers, not
general utility libraries. Perhaps virHostdevManagerInit() should be
setup as a VIR_ONCE_GLOBAL_INIT() (search for that macro name, and
ebTablesInitialize, in virebtables.c for an example of how to use it),
then just call virHostdevManagerInitialize() (a function created by the
VIR_ONCE_GLOBAL_INIT() macro) on each entry to the API which might be
the "first".
> for (i = 0 ; i < virStateDriverTabCount ; i++) {
> if (virStateDriverTab[i]->stateInitialize) {
> VIR_DEBUG("Running global init for %s state driver",
> @@ -858,6 +860,9 @@ int virStateCleanup(void) {
> virStateDriverTab[i]->stateCleanup() < 0)
> ret = -1;
> }
> +
> + virHostdevManagerCleanup();
Hmm. But what to do with this? Like virStateInitialize(),
virStateCleanup() is intended to only call the cleanup functions of
stateful drivers, not to do general cleanup, so I don't think this is a
suitable place to call virHostdevManagerCleanup(). However, it has to be
called from *somewhere*.
Anybody have any other ideas (or a dissenting opinion)? danpb?
> +
> return ret;
> }
>
> diff --git a/src/libvirt_private.syms b/src/libvirt_private.syms
> index cc734da..9967fa0 100644
> --- a/src/libvirt_private.syms
> +++ b/src/libvirt_private.syms
> @@ -1345,6 +1345,27 @@ virHookInitialize;
> virHookPresent;
>
>
> +#util/virhostdevmanager.h
> +virFreeHostdevNameList;
> +virGetActivePciHostdevs;
> +virGetActiveScsiHostdevs;
> +virGetActiveUsbHostdevs;
> +virGetDomainActivePciHostdevs;
> +virGetDomainActiveScsiHostdevs;
> +virGetDomainActiveUsbHostdevs;
> +virHostdevManagerCleanup;
> +virHostdevManagerGetDefault;
> +virHostdevManagerInit;
> +virHostdevManagerPrepareHostdevs;
> +virHostdevManagerPreparePciHostdevs;
> +virHostdevManagerPrepareScsiHostdevs;
> +virHostdevManagerPrepareUsbHostdevs;
> +virHostdevManagerReAttachHostdevs;
> +virHostdevManagerReAttachPciHostdevs;
> +virHostdevManagerReAttachScsiHostdevs;
> +virHostdevManagerReAttachUsbHostdevs;
Where is virHostdevManagerDetachPciHostdevs? (or whatever you would call
what would be called from qemuNodeDeviceDetachFlags)
> +
> +
> # util/viridentity.h
> virIdentityGetAttr;
> virIdentityIsEqual;
> @@ -1992,7 +2013,6 @@ virXPathULong;
> virXPathULongHex;
> virXPathULongLong;
>
> -
Spurious removal of whitespace line.
> # Let emacs know we want case-insensitive sorting
> # Local Variables:
> # sort-fold-case: t
> diff --git a/src/util/virhostdevmanager.c b/src/util/virhostdevmanager.c
> new file mode 100644
> index 0000000..310c943
> --- /dev/null
> +++ b/src/util/virhostdevmanager.c
> @@ -0,0 +1,1486 @@
> +/*
> + * Copyright (C) 2013 SUSE LINUX Products GmbH, Nuernberg, Germany.
> + *
> + * This library is free software; you can redistribute it and/or
> + * modify it under the terms of the GNU Lesser General Public
> + * License as published by the Free Software Foundation; either
> + * version 2.1 of the License, or (at your option) any later version.
> + *
> + * This library is distributed in the hope that it will be useful,
> + * but WITHOUT ANY WARRANTY; without even the implied warranty of
> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
> + * Lesser General Public License for more details.
> + *
> + * You should have received a copy of the GNU Lesser General Public
> + * License along with this library. If not, see
> + * <http://www.gnu.org/licenses/>.
> + *
> + * Author: Chunyan Liu <cyliu at suse.com>
Quite a lot of this code isn't new, but is just cut-pasted from other
files, with some variable names changed. You need to make sure that all
the Copyrights and Authors from the original files are duplicated here.
> + */
> +
> +#include <config.h>
> +
> +#include "virhostdevmanager.h"
> +
> +#include <sys/types.h>
> +#include <sys/stat.h>
> +#include <unistd.h>
> +#include <stdlib.h>
> +#include <stdio.h>
> +
> +#include "viralloc.h"
> +#include "virstring.h"
> +#include "virfile.h"
> +#include "virerror.h"
> +#include "virlog.h"
> +#include "virpci.h"
> +#include "virusb.h"
> +#include "virscsi.h"
> +#include "virnetdev.h"
> +
> +/* For virReportOOMError() and virReportSystemError() */
> +#define VIR_FROM_THIS VIR_FROM_NONE
> +
> +struct _virHostdevManager{
> + char *stateDir;
> +
> + virPCIDeviceListPtr activePciHostdevs;
> + virPCIDeviceListPtr inactivePciHostdevs;
> + virUSBDeviceListPtr activeUsbHostdevs;
> + virSCSIDeviceListPtr activeScsiHostdevs;
> +};
> +
> +static virHostdevManagerPtr hostdevMgr;
> +
> +int virHostdevManagerInit(void)
> +{
> + char ebuf[1024];
> + if (VIR_ALLOC(hostdevMgr) < 0)
> + goto out_of_memory;
> +
> + if ((hostdevMgr->activePciHostdevs = virPCIDeviceListNew()) == NULL)
> + goto error;
> +
> + if ((hostdevMgr->activeUsbHostdevs = virUSBDeviceListNew()) == NULL)
> + goto error;
> +
> + if ((hostdevMgr->inactivePciHostdevs = virPCIDeviceListNew()) == NULL)
> + goto error;
> +
> + if ((hostdevMgr->activeScsiHostdevs = virSCSIDeviceListNew()) == NULL)
> + goto error;
> +
> + if (virAsprintf(&hostdevMgr->stateDir,
> + "%s",HOSTDEV_STATE_DIR) == -1)
> + goto out_of_memory;
> +
> + if (virFileMakePath(hostdevMgr->stateDir) < 0) {
> + VIR_ERROR(_("Failed to create state dir '%s': %s"),
> + hostdevMgr->stateDir, virStrerror(errno, ebuf, sizeof(ebuf)));
> + goto error;
> + }
> +
> + return 0;
> +
> +out_of_memory:
> + virReportOOMError();
> +error:
> + return -1;
> +}
> +
> +void virHostdevManagerCleanup(void)
> +{
> + if(!hostdevMgr)
> + return;
> +
> + virObjectUnref(hostdevMgr->activePciHostdevs);
> + virObjectUnref(hostdevMgr->inactivePciHostdevs);
> + virObjectUnref(hostdevMgr->activeUsbHostdevs);
> + virObjectUnref(hostdevMgr->activeScsiHostdevs);
> +
> + VIR_FREE(hostdevMgr->stateDir);
> +}
> +
> +virHostdevManagerPtr virHostdevManagerGetDefault(void)
> +{
> + return hostdevMgr;
> +}
> +
> +static int
> +virDomainHostdevPciSysfsPath(virDomainHostdevDefPtr hostdev, char **sysfs_path)
> +{
> + virPCIDeviceAddress config_address;
> +
> + config_address.domain = hostdev->source.subsys.u.pci.addr.domain;
> + config_address.bus = hostdev->source.subsys.u.pci.addr.bus;
> + config_address.slot = hostdev->source.subsys.u.pci.addr.slot;
> + config_address.function = hostdev->source.subsys.u.pci.addr.function;
> +
> + return virPCIDeviceAddressGetSysfsFile(&config_address, sysfs_path);
> +}
> +
> +static int
> +virDomainHostdevIsVirtualFunction(virDomainHostdevDefPtr hostdev)
> +{
> + char *sysfs_path = NULL;
> + int ret = -1;
> +
> + if (virDomainHostdevPciSysfsPath(hostdev, &sysfs_path) < 0)
> + return ret;
> +
> + ret = virPCIIsVirtualFunction(sysfs_path);
> +
> + VIR_FREE(sysfs_path);
> +
> + return ret;
> +}
> +
> +static int
> +virDomainHostdevNetDevice(virDomainHostdevDefPtr hostdev, char **linkdev,
> + int *vf)
> +{
> + int ret = -1;
> + char *sysfs_path = NULL;
> +
> + if (virDomainHostdevPciSysfsPath(hostdev, &sysfs_path) < 0)
> + return ret;
> +
> + if (virPCIIsVirtualFunction(sysfs_path) == 1) {
> + if (virPCIGetVirtualFunctionInfo(sysfs_path, linkdev,
> + vf) < 0)
> + goto cleanup;
> + } else {
> + if (virPCIGetNetName(sysfs_path, linkdev) < 0)
> + goto cleanup;
> + *vf = -1;
> + }
> +
> + ret = 0;
> +
> +cleanup:
> + VIR_FREE(sysfs_path);
> +
> + return ret;
> +}
> +
> +static int
> +virDomainHostdevNetConfigVirtPortProfile(const char *linkdev, int vf,
> + virNetDevVPortProfilePtr virtPort,
> + const virMacAddrPtr macaddr,
> + const unsigned char *uuid,
> + int associate)
> +{
> + int ret = -1;
> +
> + if (!virtPort)
> + return ret;
> +
> + switch (virtPort->virtPortType) {
> + case VIR_NETDEV_VPORT_PROFILE_NONE:
> + case VIR_NETDEV_VPORT_PROFILE_OPENVSWITCH:
> + case VIR_NETDEV_VPORT_PROFILE_8021QBG:
> + case VIR_NETDEV_VPORT_PROFILE_LAST:
> + virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
> + _("virtualport type %s is "
> + "currently not supported on interfaces of type "
> + "hostdev"),
> + virNetDevVPortTypeToString(virtPort->virtPortType));
> + break;
> +
> + case VIR_NETDEV_VPORT_PROFILE_8021QBH:
> + if (associate)
> + ret = virNetDevVPortProfileAssociate(NULL, virtPort, macaddr,
> + linkdev, vf, uuid,
> + VIR_NETDEV_VPORT_PROFILE_OP_CREATE, false);
> + else
> + ret = virNetDevVPortProfileDisassociate(NULL, virtPort,
> + macaddr, linkdev, vf,
> + VIR_NETDEV_VPORT_PROFILE_OP_DESTROY);
> + break;
> + }
> +
> + return ret;
> +}
> +
> +static int
> +virDomainHostdevNetConfigReplace(virDomainHostdevDefPtr hostdev,
> + const unsigned char *uuid,
> + char *stateDir)
> +{
> + char *linkdev = NULL;
> + virNetDevVlanPtr vlan;
> + virNetDevVPortProfilePtr virtPort;
> + int ret = -1;
> + int vf = -1;
> + int vlanid = -1;
> + int port_profile_associate = 1;
> + int isvf;
> +
> + isvf = virDomainHostdevIsVirtualFunction(hostdev);
> + if (isvf <= 0) {
> + virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
> + _("Interface type hostdev is currently supported on"
> + " SR-IOV Virtual Functions only"));
> + return ret;
> + }
> +
> + if (virDomainHostdevNetDevice(hostdev, &linkdev, &vf) < 0)
> + return ret;
> +
> + vlan = virDomainNetGetActualVlan(hostdev->parent.data.net);
> + virtPort = virDomainNetGetActualVirtPortProfile(
> + hostdev->parent.data.net);
> + if (virtPort) {
> + if (vlan) {
> + virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
> + _("direct setting of the vlan tag is not allowed "
> + "for hostdev devices using %s mode"),
> + virNetDevVPortTypeToString(virtPort->virtPortType));
> + goto cleanup;
> + }
> + ret = virDomainHostdevNetConfigVirtPortProfile(linkdev, vf,
> + virtPort, &hostdev->parent.data.net->mac, uuid,
> + port_profile_associate);
> + } else {
> + /* Set only mac and vlan */
> + if (vlan) {
> + if (vlan->nTags != 1 || vlan->trunk) {
> + virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
> + _("vlan trunking is not supported "
> + "by SR-IOV network devices"));
> + goto cleanup;
> + }
> + if (vf == -1) {
> + virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
> + _("vlan can only be set for SR-IOV VFs, but "
> + "%s is not a VF"), linkdev);
> + goto cleanup;
> + }
> + vlanid = vlan->tag[0];
> + } else if (vf >= 0) {
> + vlanid = 0; /* assure any current vlan tag is reset */
> + }
> +
> + ret = virNetDevReplaceNetConfig(linkdev, vf,
> + &hostdev->parent.data.net->mac,
> + vlanid, stateDir);
> + }
> +cleanup:
> + VIR_FREE(linkdev);
> + return ret;
> +}
> +
> +static int
> +virDomainHostdevNetConfigRestore(virDomainHostdevDefPtr hostdev,
> + char *stateDir)
> +{
> + char *linkdev = NULL;
> + virNetDevVPortProfilePtr virtPort;
> + int ret = -1;
> + int vf = -1;
> + int port_profile_associate = 0;
> + int isvf;
> +
> + isvf = virDomainHostdevIsVirtualFunction(hostdev);
> + if (isvf <= 0) {
> + virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
> + _("Interface type hostdev is currently supported on"
> + " SR-IOV Virtual Functions only"));
> + return ret;
> + }
> +
> + if (virDomainHostdevNetDevice(hostdev, &linkdev, &vf) < 0)
> + return ret;
> +
> + virtPort = virDomainNetGetActualVirtPortProfile(
> + hostdev->parent.data.net);
> + if (virtPort)
> + ret = virDomainHostdevNetConfigVirtPortProfile(linkdev, vf, virtPort,
> + &hostdev->parent.data.net->mac, NULL,
> + port_profile_associate);
> + else
> + ret = virNetDevRestoreNetConfig(linkdev, vf, stateDir);
> +
> + VIR_FREE(linkdev);
> +
> + return ret;
> +}
> +
> +static virPCIDeviceListPtr
> +virHostdevManagerGetPciHostDeviceList(virDomainHostdevDefPtr *hostdevs,
> + int nhostdevs)
> +{
> + virPCIDeviceListPtr list;
> + int i;
> +
> + if (!(list = virPCIDeviceListNew()))
> + return NULL;
> +
> + for (i = 0 ; i < nhostdevs ; i++) {
> + virDomainHostdevDefPtr hostdev = hostdevs[i];
> + virPCIDevicePtr dev;
> +
> + if (hostdev->mode != VIR_DOMAIN_HOSTDEV_MODE_SUBSYS)
> + continue;
> + if (hostdev->source.subsys.type != VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_PCI)
> + continue;
> +
> + dev = virPCIDeviceNew(hostdev->source.subsys.u.pci.addr.domain,
> + hostdev->source.subsys.u.pci.addr.bus,
> + hostdev->source.subsys.u.pci.addr.slot,
> + hostdev->source.subsys.u.pci.addr.function);
> + if (!dev) {
> + virObjectUnref(list);
> + return NULL;
> + }
> +
> + if (virPCIDeviceListAdd(list, dev) < 0) {
> + virPCIDeviceFree(dev);
> + virObjectUnref(list);
> + return NULL;
> + }
> +
> + virPCIDeviceSetManaged(dev, hostdev->managed);
> +
> + switch (hostdev->source.subsys.u.pci.backend) {
> + case VIR_DOMAIN_HOSTDEV_PCI_BACKEND_VFIO:
> + virPCIDeviceSetStubDriver(dev, "vfio-pci");
I'm changing virPCIDeviceSetStubDriver to return a status (because it
will now be allocating a separate string) so all calls to it need to
check for < 0 and return a failure to the caller if so.
> + break;
> + case VIR_DOMAIN_HOSTDEV_PCI_BACKEND_XEN :
> + virPCIDeviceSetStubDriver(dev, "pciback");
> + break;
> + default:
> + virPCIDeviceSetStubDriver(dev, "pci-stub");
> + break;
> + }
> + }
> +
> + return list;
> +}
> +
> +int
> +virHostdevManagerPreparePciHostdevs(virHostdevManagerPtr mgr,
> + const char *drv_name,
> + const char *dom_name,
> + const unsigned char *uuid,
> + virDomainHostdevDefPtr *hostdevs,
> + int nhostdevs,
> + unsigned int flags)
whitespace is wrong ^^^
> +{
> + virPCIDeviceListPtr pcidevs;
> + int last_processed_hostdev_vf = -1;
> + int i;
> + int ret = -1;
> +
> + virObjectLock(mgr->activePciHostdevs);
> + virObjectLock(mgr->inactivePciHostdevs);
> +
> + if (!(pcidevs = virHostdevManagerGetPciHostDeviceList(hostdevs, nhostdevs)))
> + goto cleanup;
> +
> + /* We have to use 9 loops here. *All* devices must
> + * be detached before we reset any of them, because
> + * in some cases you have to reset the whole PCI,
> + * which impacts all devices on it. Also, all devices
> + * must be reset before being marked as active.
> + */
> +
> + /* Loop 1: validate that non-managed device isn't in use, eg
> + * by checking that device is either un-bound, or bound
> + * to stub driver
> + */
> +
> + for (i = 0; i < virPCIDeviceListCount(pcidevs); i++) {
> + virPCIDevicePtr dev = virPCIDeviceListGet(pcidevs, i);
> + virPCIDevicePtr other;
> + bool strict_acs_check = (flags & VIR_STRICT_ACS_CHECK)?true:false;
> +
> + if (!virPCIDeviceIsAssignable(dev, strict_acs_check)) {
> + virReportError(VIR_ERR_OPERATION_INVALID,
> + _("PCI device %s is not assignable"),
> + virPCIDeviceGetName(dev));
> + goto cleanup;
> + }
> + /* The device is in use by other active domain if
> + * the dev is in list activePciHostdevs.
> + */
> + if ((other = virPCIDeviceListFind(mgr->activePciHostdevs, dev))) {
> + char *other_drvname = NULL;
> + char *other_domname = NULL;
> + virPCIDeviceGetUsedBy(other, &other_drvname, &other_domname);
> +
> + if (other_drvname && other_domname)
> + virReportError(VIR_ERR_OPERATION_INVALID,
> + _("PCI device %s is in use by driver %s,domain %s"),
> + virPCIDeviceGetName(dev), other_drvname,
> + other_domname);
> + else
> + virReportError(VIR_ERR_OPERATION_INVALID,
> + _("PCI device %s is already in use"),
> + virPCIDeviceGetName(dev));
> + VIR_FREE(other_drvname);
> + VIR_FREE(other_domname);
> + goto cleanup;
> + }
> + }
> +
> + /* Loop 2: detach managed devices */
> + for (i = 0; i < virPCIDeviceListCount(pcidevs); i++) {
> + virPCIDevicePtr dev = virPCIDeviceListGet(pcidevs, i);
> + if (virPCIDeviceGetManaged(dev) &&
> + virPCIDeviceDetach(dev, mgr->activePciHostdevs, NULL, NULL) < 0)
> + goto reattachdevs;
> + }
> +
> + /* Loop 3: Now that all the PCI hostdevs have been detached, we
> + * can safely reset them */
> + for (i = 0; i < virPCIDeviceListCount(pcidevs); i++) {
> + virPCIDevicePtr dev = virPCIDeviceListGet(pcidevs, i);
> + if (virPCIDeviceReset(dev, mgr->activePciHostdevs,
> + mgr->inactivePciHostdevs) < 0)
> + goto reattachdevs;
> + }
> +
> + /* Loop 4: For SRIOV network devices, Now that we have detached the
> + * the network device, set the netdev config */
> + for (i = 0; i < nhostdevs; i++) {
> + virDomainHostdevDefPtr hostdev = hostdevs[i];
> + if (hostdev->mode != VIR_DOMAIN_HOSTDEV_MODE_SUBSYS)
> + continue;
> + if (hostdev->source.subsys.type != VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_PCI)
> + continue;
> + if (hostdev->parent.type == VIR_DOMAIN_DEVICE_NET &&
> + hostdev->parent.data.net) {
> + if (virDomainHostdevNetConfigReplace(hostdev, uuid,
> + mgr->stateDir) < 0) {
> + goto resetvfnetconfig;
> + }
> + }
> + last_processed_hostdev_vf = i;
> + }
> +
> + /* Loop 5: Now mark all the devices as active */
> + for (i = 0; i < virPCIDeviceListCount(pcidevs); i++) {
> + virPCIDevicePtr dev = virPCIDeviceListGet(pcidevs, i);
> + if (virPCIDeviceListAdd(mgr->activePciHostdevs, dev) < 0)
> + goto inactivedevs;
> + }
> +
> + /* Loop 6: Now remove the devices from inactive list. */
> + for (i = 0; i < virPCIDeviceListCount(pcidevs); i++) {
> + virPCIDevicePtr dev = virPCIDeviceListGet(pcidevs, i);
> + virPCIDeviceListDel(mgr->inactivePciHostdevs, dev);
> + }
> +
> + /* Loop 7: Now set the used_by_domain of the device in
> + * driver->activePciHostdevs as domain name.
> + */
> + for (i = 0; i < virPCIDeviceListCount(pcidevs); i++) {
> + virPCIDevicePtr dev, activeDev;
> +
> + dev = virPCIDeviceListGet(pcidevs, i);
> + activeDev = virPCIDeviceListFind(mgr->activePciHostdevs, dev);
> +
> + if (activeDev)
> + virPCIDeviceSetUsedBy(activeDev, drv_name, dom_name);
> + }
> +
> + /* Loop 8: Now set the original states for hostdev def */
> + for (i = 0; i < nhostdevs; i++) {
> + virPCIDevicePtr dev;
> + virPCIDevicePtr pcidev;
> + virDomainHostdevDefPtr hostdev = hostdevs[i];
> +
> + if (hostdev->mode != VIR_DOMAIN_HOSTDEV_MODE_SUBSYS)
> + continue;
> + if (hostdev->source.subsys.type != VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_PCI)
> + continue;
> +
> + dev = virPCIDeviceNew(hostdev->source.subsys.u.pci.addr.domain,
> + hostdev->source.subsys.u.pci.addr.bus,
> + hostdev->source.subsys.u.pci.addr.slot,
> + hostdev->source.subsys.u.pci.addr.function);
> +
> + /* original states "unbind_from_stub", "remove_slot",
> + * "reprobe" were already set by pciDettachDevice in
> + * loop 2.
> + */
> + if ((pcidev = virPCIDeviceListFind(pcidevs, dev))) {
> + hostdev->origstates.states.pci.unbind_from_stub =
> + virPCIDeviceGetUnbindFromStub(pcidev);
> + hostdev->origstates.states.pci.remove_slot =
> + virPCIDeviceGetRemoveSlot(pcidev);
> + hostdev->origstates.states.pci.reprobe =
> + virPCIDeviceGetReprobe(pcidev);
> + }
> +
> + virPCIDeviceFree(dev);
> + }
> +
> + /* Loop 9: Now steal all the devices from pcidevs */
> + while (virPCIDeviceListCount(pcidevs) > 0)
> + virPCIDeviceListStealIndex(pcidevs, 0);
> +
> + ret = 0;
> + goto cleanup;
> +
> +inactivedevs:
> + /* Only steal all the devices from driver->activePciHostdevs. We will
> + * free them in virObjectUnref().
> + */
> + while (virPCIDeviceListCount(pcidevs) > 0) {
> + virPCIDevicePtr dev = virPCIDeviceListGet(pcidevs, 0);
> + virPCIDeviceListSteal(mgr->activePciHostdevs, dev);
> + }
> +
> +resetvfnetconfig:
> + for (i = 0; i < last_processed_hostdev_vf; i++) {
> + virDomainHostdevDefPtr hostdev = hostdevs[i];
> + if (hostdev->parent.type == VIR_DOMAIN_DEVICE_NET &&
> + hostdev->parent.data.net) {
> + virDomainHostdevNetConfigRestore(hostdev, mgr->stateDir);
> + }
> + }
> +
> +reattachdevs:
> + for (i = 0; i < virPCIDeviceListCount(pcidevs); i++) {
> + virPCIDevicePtr dev = virPCIDeviceListGet(pcidevs, i);
> + virPCIDeviceReattach(dev, mgr->activePciHostdevs, NULL);
> + }
> +
> +cleanup:
> + virObjectUnlock(mgr->activePciHostdevs);
> + virObjectUnlock(mgr->inactivePciHostdevs);
> + virObjectUnref(pcidevs);
> + return ret;
> +}
> +
> +static int
> +virFindHostdevUSBDevice(virDomainHostdevDefPtr hostdev,
> + bool mandatory,
> + virUSBDevicePtr *usb)
> +{
> + unsigned vendor = hostdev->source.subsys.u.usb.vendor;
> + unsigned product = hostdev->source.subsys.u.usb.product;
> + unsigned bus = hostdev->source.subsys.u.usb.bus;
> + unsigned device = hostdev->source.subsys.u.usb.device;
> + bool autoAddress = hostdev->source.subsys.u.usb.autoAddress;
> + int rc;
> +
> + *usb = NULL;
> +
> + if (vendor && bus) {
> + rc = virUSBDeviceFind(vendor, product, bus, device,
> + NULL,
> + autoAddress ? false : mandatory,
> + usb);
> + if (rc < 0) {
> + return -1;
> + } else if (!autoAddress) {
> + goto out;
> + } else {
> + VIR_INFO("USB device %x:%x could not be found at previous"
> + " address (bus:%u device:%u)",
> + vendor, product, bus, device);
> + }
> + }
> +
> + /* When vendor is specified, its USB address is either unspecified or the
> + * device could not be found at the USB device where it had been
> + * automatically found before.
> + */
> + if (vendor) {
> + virUSBDeviceListPtr devs;
> +
> + rc = virUSBDeviceFindByVendor(vendor, product, NULL, mandatory, &devs);
> + if (rc < 0)
> + return -1;
> +
> + if (rc == 1) {
> + *usb = virUSBDeviceListGet(devs, 0);
> + virUSBDeviceListSteal(devs, *usb);
> + }
> + virObjectUnref(devs);
> +
> + if (rc == 0) {
> + goto out;
> + } else if (rc > 1) {
> + if (autoAddress) {
> + virReportError(VIR_ERR_OPERATION_FAILED,
> + _("Multiple USB devices for %x:%x were found,"
> + " but none of them is at bus:%u device:%u"),
> + vendor, product, bus, device);
> + } else {
> + virReportError(VIR_ERR_OPERATION_FAILED,
> + _("Multiple USB devices for %x:%x, "
> + "use <address> to specify one"),
> + vendor, product);
> + }
> + return -1;
> + }
> +
> + hostdev->source.subsys.u.usb.bus = virUSBDeviceGetBus(*usb);
> + hostdev->source.subsys.u.usb.device = virUSBDeviceGetDevno(*usb);
> + hostdev->source.subsys.u.usb.autoAddress = true;
> +
> + if (autoAddress) {
> + VIR_INFO("USB device %x:%x found at bus:%u device:%u (moved"
> + " from bus:%u device:%u)",
> + vendor, product,
> + hostdev->source.subsys.u.usb.bus,
> + hostdev->source.subsys.u.usb.device,
> + bus, device);
> + }
> + } else if (!vendor && bus) {
> + if (virUSBDeviceFindByBus(bus, device, NULL, mandatory, usb) < 0)
> + return -1;
> + }
> +
> +out:
> + if (!*usb)
> + hostdev->missing = true;
> + return 0;
> +}
> +
> +static int
> +virHostdevManagerMarkUsbHostdevs(virHostdevManagerPtr mgr,
> + const char *drv_name,
> + const char *dom_name,
> + virUSBDeviceListPtr list)
> +{
> + int i, j;
> + unsigned int count;
> + virUSBDevicePtr tmp;
> +
> + virObjectLock(mgr->activeUsbHostdevs);
> + count = virUSBDeviceListCount(list);
> +
> + for (i = 0; i < count; i++) {
> + virUSBDevicePtr usb = virUSBDeviceListGet(list, i);
> + if ((tmp = virUSBDeviceListFind(mgr->activeUsbHostdevs, usb))) {
> + char *other_drvname = NULL;
> + char *other_domname = NULL;
> + virUSBDeviceGetUsedBy(tmp, &other_drvname, &other_domname);
> +
> + if (other_drvname && other_domname)
> + virReportError(VIR_ERR_OPERATION_INVALID,
> + _("USB device %s is in use by driver %s,domain %s"),
> + virUSBDeviceGetName(tmp), other_drvname,
> + other_domname);
> + else
> + virReportError(VIR_ERR_OPERATION_INVALID,
> + _("USB device %s is already in use"),
> + virUSBDeviceGetName(tmp));
> + VIR_FREE(other_drvname);
> + VIR_FREE(other_domname);
> + goto error;
> + }
> +
> + virUSBDeviceSetUsedBy(usb, drv_name, dom_name);
> + VIR_DEBUG("Adding %03d.%03d driver= %s dom=%s to activeUsbHostdevs",
> + virUSBDeviceGetBus(usb), virUSBDeviceGetDevno(usb),drv_name, dom_name);
> + /*
> + * The caller is responsible to steal these usb devices
> + * from the virUSBDeviceList that passed in on success,
> + * perform rollback on failure.
> + */
> + if (virUSBDeviceListAdd(mgr->activeUsbHostdevs, usb) < 0)
> + goto error;
> + }
> +
> + virObjectUnlock(mgr->activeUsbHostdevs);
> + return 0;
> +
> +error:
> + for (j = 0; j < i; j++) {
> + tmp = virUSBDeviceListGet(list, i);
> + virUSBDeviceListSteal(mgr->activeUsbHostdevs, tmp);
> + }
> + virObjectUnlock(mgr->activeUsbHostdevs);
> + return -1;
> +}
> +
> +int virHostdevManagerPrepareUsbHostdevs(virHostdevManagerPtr mgr,
> + const char *driver,
> + virDomainDefPtr def,
> + bool coldBoot)
> +{
> + int i, ret = -1;
> + virUSBDeviceListPtr list;
> + virUSBDevicePtr tmp;
> + virDomainHostdevDefPtr *hostdevs = def->hostdevs;
> + int nhostdevs = def->nhostdevs;
> +
> + /* To prevent situation where USB device is assigned to two domains
> + * we need to keep a list of currently assigned USB devices.
> + * This is done in several loops which cannot be joined into one
> + * big loop.
> + */
> + if (!(list = virUSBDeviceListNew()))
> + goto cleanup;
> +
> + /* Loop 1: build temporary list
> + */
> + for (i = 0 ; i < nhostdevs ; i++) {
> + virDomainHostdevDefPtr hostdev = hostdevs[i];
> + bool required = true;
> + virUSBDevicePtr usb;
> +
> + if (hostdev->mode != VIR_DOMAIN_HOSTDEV_MODE_SUBSYS)
> + continue;
> + if (hostdev->source.subsys.type != VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_USB)
> + continue;
> +
> + if (hostdev->startupPolicy == VIR_DOMAIN_STARTUP_POLICY_OPTIONAL ||
> + (hostdev->startupPolicy == VIR_DOMAIN_STARTUP_POLICY_REQUISITE &&
> + !coldBoot))
> + required = false;
> +
> + if (virFindHostdevUSBDevice(hostdev, required, &usb) < 0)
> + goto cleanup;
> +
> + if (usb && virUSBDeviceListAdd(list, usb) < 0) {
> + virUSBDeviceFree(usb);
> + goto cleanup;
> + }
> + }
> +
> + /* Mark devices in temporary list as used by @name
> + * and add them do driver list. However, if something goes
> + * wrong, perform rollback.
> + */
> + if (virHostdevManagerMarkUsbHostdevs(mgr, driver, def->name, list) < 0)
> + goto cleanup;
> +
> + /* Loop 2: Temporary list was successfully merged with
> + * driver list, so steal all items to avoid freeing them
> + * in cleanup label.
> + */
> + while (virUSBDeviceListCount(list) > 0) {
> + tmp = virUSBDeviceListGet(list, 0);
> + virUSBDeviceListSteal(list, tmp);
> + }
> +
> + ret = 0;
> +
> +cleanup:
> + virObjectUnref(list);
> + return ret;
> +}
> +
> +int
> +virHostdevManagerPrepareScsiHostdevs(virHostdevManagerPtr mgr,
> + const char *drv_name,
> + const char *dom_name,
> + virDomainHostdevDefPtr *hostdevs,
> + int nhostdevs)
> +{
> + int i, j, count;
> + virSCSIDeviceListPtr list;
> + virSCSIDevicePtr tmp;
> +
> + /* To prevent situation where SCSI device is assigned to two domains
> + * we need to keep a list of currently assigned SCSI devices.
> + */
> + if (!(list = virSCSIDeviceListNew()))
> + goto cleanup;
> +
> + /* Loop 1: build temporary list */
> + for (i = 0 ; i < nhostdevs ; i++) {
> + virDomainHostdevDefPtr hostdev = hostdevs[i];
> + virSCSIDevicePtr scsi;
> +
> + if (hostdev->mode != VIR_DOMAIN_HOSTDEV_MODE_SUBSYS ||
> + hostdev->source.subsys.type != VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_SCSI)
> + continue;
> +
> + if (hostdev->managed) {
> + virReportError(VIR_ERR_XML_ERROR, "%s",
> + _("SCSI host device doesn't support managed mode"));
> + goto cleanup;
> + }
> +
> + if (!(scsi = virSCSIDeviceNew(hostdev->source.subsys.u.scsi.adapter,
> + hostdev->source.subsys.u.scsi.bus,
> + hostdev->source.subsys.u.scsi.target,
> + hostdev->source.subsys.u.scsi.unit,
> + hostdev->readonly)))
> + goto cleanup;
> +
> + if (scsi && virSCSIDeviceListAdd(list, scsi) < 0) {
> + virSCSIDeviceFree(scsi);
> + goto cleanup;
> + }
> + }
> +
> + /* Loop 2: Mark devices in temporary list as used by
> + * and add them to driver list. However, if something goes
> + * wrong, perform rollback.
> + */
> + virObjectLock(mgr->activeScsiHostdevs);
> + count = virSCSIDeviceListCount(list);
> +
> + for (i = 0; i < count; i++) {
> + virSCSIDevicePtr scsi = virSCSIDeviceListGet(list, i);
> + if ((tmp = virSCSIDeviceListFind(mgr->activeScsiHostdevs, scsi))) {
> + char *other_drvname = NULL;
> + char *other_domname = NULL;
> + virSCSIDeviceGetUsedBy(tmp, &other_drvname, &other_domname);
> +
> + if (other_drvname && other_domname)
> + virReportError(VIR_ERR_OPERATION_INVALID,
> + _("SCSI device %s is in use by driver %s domain %s"),
> + virSCSIDeviceGetName(tmp), other_drvname, other_domname);
> + else
> + virReportError(VIR_ERR_OPERATION_INVALID,
> + _("SCSI device %s is already in use"),
> + virSCSIDeviceGetName(tmp));
> + goto error;
> + }
> +
> + virSCSIDeviceSetUsedBy(scsi, drv_name, dom_name);
> + VIR_DEBUG("Adding %s to activeScsiHostdevs", virSCSIDeviceGetName(scsi));
> +
> + if (virSCSIDeviceListAdd(mgr->activeScsiHostdevs, scsi) < 0)
> + goto error;
> + }
> +
> + virObjectUnlock(mgr->activeScsiHostdevs);
> +
> + /* Loop 3: Temporary list was successfully merged with
> + * driver list, so steal all items to avoid freeing them
> + * when freeing temporary list.
> + */
> + while (virSCSIDeviceListCount(list) > 0) {
> + tmp = virSCSIDeviceListGet(list, 0);
> + virSCSIDeviceListSteal(list, tmp);
> + }
> +
> + virObjectUnref(list);
> + return 0;
> +
> +error:
> + for (j = 0; j < i; j++) {
> + tmp = virSCSIDeviceListGet(list, i);
> + virSCSIDeviceListSteal(mgr->activeScsiHostdevs, tmp);
> + }
> + virObjectUnlock(mgr->activeScsiHostdevs);
> +cleanup:
> + virObjectUnref(list);
> + return -1;
> +}
> +
> +
> +int virHostdevManagerPrepareHostdevs(virHostdevManagerPtr mgr,
> + const char *driver,
> + virDomainDefPtr def,
> + unsigned int flags)
> +{
> + if (!def->nhostdevs)
> + return 0;
> +
> + if (flags & VIR_SP_PCI_HOSTDEV) {
> + if(virHostdevManagerPreparePciHostdevs(mgr, driver, def->name, def->uuid,
> + def->hostdevs, def->nhostdevs, flags) < 0)
> + return -1;
> + }
> +
> + if (flags & VIR_SP_USB_HOSTDEV) {
> + bool coldBoot = (flags & VIR_COLD_BOOT)?true:false;
> + if(virHostdevManagerPrepareUsbHostdevs(mgr, driver, def, coldBoot) < 0)
> + return -1;
> + }
> +
> + if (flags & VIR_SP_SCSI_HOSTDEV) {
> + if (virHostdevManagerPrepareScsiHostdevs(mgr, driver, def->name,
> + def->hostdevs, def->nhostdevs) < 0)
> + return -1;
> + }
> +
> + return 0;
> +}
> +
> +/*
> + * Pre-condition: mgr->inactivePciHostdevs & mgr->activePciHostdevs
> + * are locked
> + */
> +static void
> +virReattachPciDevice(virHostdevManagerPtr mgr, virPCIDevicePtr dev, const char *driver)
I've noticed a lot of inconsistency in naming. I think you need to 1)
(optional but definitely nice) try to find a shorter prefix that makes
sense, and 2) consistently use that prefix for *all* functions.
> +{
> + /* If the device is not managed and was attached to guest
> + * successfully, it must have been inactive.
> + */
> + if (!virPCIDeviceGetManaged(dev)) {
> + if (virPCIDeviceListAdd(mgr->inactivePciHostdevs, dev) < 0)
> + virPCIDeviceFree(dev);
> + return;
> + }
> +
> + /* Wait for device cleanup if it is qemu/kvm */
> + if (STREQ(driver, "QEMU") &&
> + STREQ(virPCIDeviceGetStubDriver(dev), "pci-stub")) {
> + int retries = 100;
> + while (virPCIDeviceWaitForCleanup(dev, "kvm_assigned_device")
> + && retries) {
> + usleep(100*1000);
> + retries--;
> + }
> + }
> +
> + if (virPCIDeviceReattach(dev, mgr->activePciHostdevs,
> + mgr->inactivePciHostdevs) < 0) {
> + virErrorPtr err = virGetLastError();
> + VIR_ERROR(_("Failed to re-attach PCI device: %s"),
> + err ? err->message : _("unknown error"));
> + virResetError(err);
> + }
> + virPCIDeviceFree(dev);
> +}
> +
> +/*
> + * Pre-condition: mgr->activePciHostdevs is locked
> + */
> +static virPCIDeviceListPtr
> +virGetActivePciHostDeviceList(virHostdevManagerPtr mgr,
> + virDomainHostdevDefPtr *hostdevs,
> + int nhostdevs)
> +{
> + virPCIDeviceListPtr list;
> + int i;
> +
> + if (!(list = virPCIDeviceListNew()))
> + return NULL;
> +
> + for (i = 0 ; i < nhostdevs ; i++) {
> + virDomainHostdevDefPtr hostdev = hostdevs[i];
> + virPCIDevicePtr dev;
> + virPCIDevicePtr activeDev;
> +
> + if (hostdev->mode != VIR_DOMAIN_HOSTDEV_MODE_SUBSYS)
> + continue;
> + if (hostdev->source.subsys.type != VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_PCI)
> + continue;
> +
> + dev = virPCIDeviceNew(hostdev->source.subsys.u.pci.addr.domain,
> + hostdev->source.subsys.u.pci.addr.bus,
> + hostdev->source.subsys.u.pci.addr.slot,
> + hostdev->source.subsys.u.pci.addr.function);
> + if (!dev) {
> + virObjectUnref(list);
> + return NULL;
> + }
> +
> + if ((activeDev = virPCIDeviceListFind(mgr->activePciHostdevs, dev))) {
> + if (virPCIDeviceListAdd(list, activeDev) < 0) {
> + virPCIDeviceFree(dev);
> + virObjectUnref(list);
> + return NULL;
> + }
> + }
> +
> + virPCIDeviceFree(dev);
> + }
> +
> + return list;
> +}
> +
> +void
> +virHostdevManagerReAttachPciHostdevs(virHostdevManagerPtr mgr,
> + const char *drv_name,
> + const char *dom_name,
> + virDomainHostdevDefPtr *hostdevs,
> + int nhostdevs)
> +{
> + virPCIDeviceListPtr pcidevs;
> + int i;
> +
> + virObjectLock(mgr->activePciHostdevs);
> + virObjectLock(mgr->inactivePciHostdevs);
> +
> + if (!(pcidevs = virGetActivePciHostDeviceList(mgr,
> + hostdevs,
> + nhostdevs))) {
> + virErrorPtr err = virGetLastError();
> + VIR_ERROR(_("Failed to allocate PCI device list: %s"),
> + err ? err->message : _("unknown error"));
> + virResetError(err);
> + goto cleanup;
> + }
> +
> + /* Again 4 loops; mark all devices as inactive before reset
> + * them and reset all the devices before re-attach.
> + * Attach mac and port profile parameters to devices
> + */
> + for (i = 0; i < virPCIDeviceListCount(pcidevs); i++) {
> + virPCIDevicePtr dev = virPCIDeviceListGet(pcidevs, i);
> + virPCIDevicePtr activeDev = NULL;
> +
> + /* Never delete the dev from list driver->activePciHostdevs
> + * if it's used by other domain.
> + */
> + activeDev = virPCIDeviceListFind(mgr->activePciHostdevs, dev);
> + if (activeDev) {
> + char *usedby_drvname = NULL;
> + char *usedby_domname = NULL;
> + virPCIDeviceGetUsedBy(activeDev, &usedby_drvname, &usedby_domname);
> + if (STRNEQ_NULLABLE(drv_name, usedby_drvname) &&
> + STRNEQ_NULLABLE(dom_name, usedby_domname)) {
> + virPCIDeviceListSteal(pcidevs, dev);
> + continue;
> + }
> + VIR_FREE(usedby_drvname);
> + VIR_FREE(usedby_domname);
> + }
> +
> + /* virObjectUnref() will take care of freeing the dev. */
> + virPCIDeviceListSteal(mgr->activePciHostdevs, dev);
> + }
> +
> + /*
> + * For SRIOV net host devices, unset mac and port profile before
> + * reset and reattach device
> + */
> + for (i = 0; i < nhostdevs; i++) {
> + virDomainHostdevDefPtr hostdev = hostdevs[i];
> + if (hostdev->mode != VIR_DOMAIN_HOSTDEV_MODE_SUBSYS)
> + continue;
> + if (hostdev->source.subsys.type != VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_PCI)
> + continue;
> + if (hostdev->parent.type == VIR_DOMAIN_DEVICE_NET &&
> + hostdev->parent.data.net) {
> + virDomainHostdevNetConfigRestore(hostdev, mgr->stateDir);
> + }
> + }
> +
> + for (i = 0; i < virPCIDeviceListCount(pcidevs); i++) {
> + virPCIDevicePtr dev = virPCIDeviceListGet(pcidevs, i);
> + if (virPCIDeviceReset(dev, mgr->activePciHostdevs,
> + mgr->inactivePciHostdevs) < 0) {
> + virErrorPtr err = virGetLastError();
> + VIR_ERROR(_("Failed to reset PCI device: %s"),
> + err ? err->message : _("unknown error"));
> + virResetError(err);
> + }
> + }
> +
> + while (virPCIDeviceListCount(pcidevs) > 0) {
> + virPCIDevicePtr dev = virPCIDeviceListStealIndex(pcidevs, 0);
> + virReattachPciDevice(mgr, dev, drv_name);
> + }
> +
> + virObjectUnref(pcidevs);
> +cleanup:
> + virObjectUnlock(mgr->activePciHostdevs);
> + virObjectUnlock(mgr->inactivePciHostdevs);
> +}
> +
> +void
> +virHostdevManagerReAttachUsbHostdevs(virHostdevManagerPtr mgr,
> + const char *drv_name,
> + const char *dom_name,
> + virDomainHostdevDefPtr *hostdevs,
> + int nhostdevs)
> +{
> + int i;
> +
> + virObjectLock(mgr->activeUsbHostdevs);
> + for (i = 0; i < nhostdevs; i++) {
> + virDomainHostdevDefPtr hostdev = hostdevs[i];
> + virUSBDevicePtr usb, tmp;
> +
> + if (hostdev->mode != VIR_DOMAIN_HOSTDEV_MODE_SUBSYS)
> + continue;
> + if (hostdev->source.subsys.type != VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_USB)
> + continue;
> + if (hostdev->missing)
> + continue;
> +
> + usb = virUSBDeviceNew(hostdev->source.subsys.u.usb.bus,
> + hostdev->source.subsys.u.usb.device,
> + NULL);
> +
> + if (!usb) {
> + VIR_WARN("Unable to reattach USB device %03d.%03d on driver %s domain %s",
> + hostdev->source.subsys.u.usb.bus,
> + hostdev->source.subsys.u.usb.device,
> + drv_name, dom_name);
> + continue;
> + }
> +
> + /* Delete only those USB devices which belongs
> + * to domain. Therefore we want to steal only
> + * those devices from the list which were taken
> + * by domain */
> +
> + tmp = virUSBDeviceListFind(mgr->activeUsbHostdevs, usb);
> + virUSBDeviceFree(usb);
> +
> + if (!tmp) {
> + VIR_WARN("Unable to find device %03d.%03d "
> + "in list of active USB devices",
> + hostdev->source.subsys.u.usb.bus,
> + hostdev->source.subsys.u.usb.device);
> + continue;
> + }
> +
> + char *usedby_drvname = NULL;
> + char *usedby_domname = NULL;
> + virUSBDeviceGetUsedBy(tmp, &usedby_drvname, &usedby_domname);
> + if (STREQ_NULLABLE(drv_name, usedby_drvname) &&
> + STREQ_NULLABLE(dom_name, usedby_domname)) {
> + VIR_DEBUG("Removing %03d.%03d dom=%s:%s",
> + hostdev->source.subsys.u.usb.bus,
> + hostdev->source.subsys.u.usb.device,
> + drv_name, dom_name);
> + virUSBDeviceListDel(mgr->activeUsbHostdevs, tmp);
> + }
> + VIR_FREE(usedby_drvname);
> + VIR_FREE(usedby_domname);
> +
> + }
> + virObjectUnlock(mgr->activeUsbHostdevs);
> +}
> +
> +void
> +virHostdevManagerReAttachScsiHostdevs(virHostdevManagerPtr mgr,
> + const char *drv_name,
> + const char *dom_name,
> + virDomainHostdevDefPtr *hostdevs,
> + int nhostdevs)
> +{
> + int i;
> +
> + virObjectLock(mgr->activeScsiHostdevs);
> + for (i = 0; i < nhostdevs; i++) {
> + virDomainHostdevDefPtr hostdev = hostdevs[i];
> + virSCSIDevicePtr scsi, tmp;
> + char *used_by_drvname;
> + char *used_by_domname;
> +
> + if (hostdev->mode != VIR_DOMAIN_HOSTDEV_MODE_SUBSYS ||
> + hostdev->source.subsys.type != VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_SCSI)
> + continue;
> +
> + if (!(scsi = virSCSIDeviceNew(hostdev->source.subsys.u.scsi.adapter,
> + hostdev->source.subsys.u.scsi.bus,
> + hostdev->source.subsys.u.scsi.target,
> + hostdev->source.subsys.u.scsi.unit,
> + hostdev->readonly))) {
> + VIR_WARN("Unable to reattach SCSI device %s:%d:%d:%d on driver %s domain %s",
> + hostdev->source.subsys.u.scsi.adapter,
> + hostdev->source.subsys.u.scsi.bus,
> + hostdev->source.subsys.u.scsi.target,
> + hostdev->source.subsys.u.scsi.unit,
> + drv_name, dom_name);
> + continue;
> + }
> +
> + tmp = virSCSIDeviceListFind(mgr->activeScsiHostdevs, scsi);
> + virSCSIDeviceFree(scsi);
> +
> + if (!tmp) {
> + VIR_WARN("Unable to find device %s:%d:%d:%d "
> + "in list of active SCSI devices",
> + hostdev->source.subsys.u.scsi.adapter,
> + hostdev->source.subsys.u.scsi.bus,
> + hostdev->source.subsys.u.scsi.target,
> + hostdev->source.subsys.u.scsi.unit);
> + continue;
> + }
> +
> + virSCSIDeviceGetUsedBy(tmp, &used_by_drvname, &used_by_domname);
> + if (STREQ_NULLABLE(used_by_drvname, drv_name) &&
> + STREQ_NULLABLE(used_by_domname, dom_name)) {
> + VIR_DEBUG("Removing %s:%d:%d:%d driver:%s dom:%s from activeScsiHostdevs",
> + hostdev->source.subsys.u.scsi.adapter,
> + hostdev->source.subsys.u.scsi.bus,
> + hostdev->source.subsys.u.scsi.target,
> + hostdev->source.subsys.u.scsi.unit,
> + drv_name, dom_name);
> +
> + virSCSIDeviceListDel(mgr->activeScsiHostdevs, tmp);
> + }
> + }
> + virObjectUnlock(mgr->activeScsiHostdevs);
> +}
> +
> +void virHostdevManagerReAttachHostdevs(virHostdevManagerPtr mgr,
> + const char *driver,
> + virDomainDefPtr def,
> + unsigned int flags)
> +{
> + if (!def->nhostdevs)
> + return;
> +
> + if (flags & VIR_SP_PCI_HOSTDEV) {
> + virHostdevManagerReAttachPciHostdevs(mgr, driver, def->name, def->hostdevs, def->nhostdevs);
> + }
> +
> + if (flags & VIR_SP_USB_HOSTDEV) {
> + virHostdevManagerReAttachUsbHostdevs(mgr, driver, def->name, def->hostdevs, def->nhostdevs);
> + }
> +
> + if (flags & VIR_SP_SCSI_HOSTDEV) {
> + virHostdevManagerReAttachScsiHostdevs(mgr, driver, def->name, def->hostdevs, def->nhostdevs);
> + }
> +}
> +
> +
> +/*After using any of the above four *Get* APIs, virFreeHostdevNameList should
> + *be called to free memory.
> + */
> +void virFreeHostdevNameList(virHostdevNameListPtr list){
Another example of function naming inconsistency - the "Free" should
come at the end of the name: virHostdevNameListFree() (or something similar)
> + int i;
> +
> + if (list && list->names) {
> + for (i = 0; i < list->nnames; i++) {
> + if (list->names[i])
> + VIR_FREE(list->names[i]);
> + }
> + VIR_FREE(list->names);
> + }
> + VIR_FREE(list);
> +}
> +
> +virHostdevNameListPtr
> +virGetActivePciHostdevs(virHostdevManagerPtr mgr)
Same - put the verb at the end of the name.
> +{
> + int i,count;
> + virHostdevNameListPtr list = NULL;
> + virObjectLock(mgr->activePciHostdevs);
> +
> + count = virPCIDeviceListCount(mgr->activePciHostdevs);
> + if (count > 0) {
> + if (VIR_ALLOC_N(list, 1) < 0) {
> + virReportError(VIR_ERR_OPERATION_INVALID,
> + _("Fail to alloc memory"));
Don't make your own message, call virReportOOMError();
> + goto cleanup;
> + }
> +
> + if (VIR_ALLOC_N(list->names,count) < 0) {
> + virReportError(VIR_ERR_OPERATION_INVALID,
> + _("Fail to alloc memory"));
same
> + goto cleanup;
> + }
> + list->nnames = 0;
> +
> + for (i = 0; i < count; i++) {
> + virPCIDevicePtr dev = virPCIDeviceListGet(mgr->activePciHostdevs, i);
> + list->names[list->nnames++] = strdup(virPCIDeviceGetName(dev));
> + }
> + }
> +
> +cleanup:
> + virFreeHostdevNameList(list);
> + virObjectUnlock(mgr->activePciHostdevs);
> + return list;
> +}
> +
> +virHostdevNameListPtr
> +virGetActiveUsbHostdevs(virHostdevManagerPtr mgr)
> +{
> + int i,count;
> + virHostdevNameListPtr list = NULL;
> + virObjectLock(mgr->activeUsbHostdevs);
> +
> + count = virUSBDeviceListCount(mgr->activeUsbHostdevs);
> + if (count > 0) {
> + if (VIR_ALLOC_N(list, 1) < 0) {
> + virReportError(VIR_ERR_OPERATION_INVALID,
> + _("Fail to alloc memory"));
> + goto cleanup;
> + }
> +
> + if (VIR_ALLOC_N(list->names,count) < 0) {
> + virReportError(VIR_ERR_OPERATION_INVALID,
> + _("Fail to alloc memory"));
> + goto cleanup;
> + }
> + list->nnames = 0;
> +
> + for (i = 0; i < count; i++) {
> + virUSBDevicePtr usb = virUSBDeviceListGet(mgr->activeUsbHostdevs, i);
> + list->names[list->nnames++] = strdup(virUSBDeviceGetName(usb));
> + }
> + }
> +
> +cleanup:
> + virFreeHostdevNameList(list);
> + virObjectUnlock(mgr->activeUsbHostdevs);
> + return list;
> +}
> +
> +virHostdevNameListPtr
> +virGetActiveScsiHostdevs(virHostdevManagerPtr mgr)
> +{
> + int i,count;
> + virHostdevNameListPtr list = NULL;
> + virObjectLock(mgr->activeScsiHostdevs);
> +
> + count = virSCSIDeviceListCount(mgr->activeScsiHostdevs);
> + if (count > 0) {
> + if (VIR_ALLOC_N(list, 1) < 0) {
> + virReportError(VIR_ERR_OPERATION_INVALID,
> + _("Fail to alloc memory"));
> + goto cleanup;
> + }
> +
> + if (VIR_ALLOC_N(list->names,count) < 0) {
> + virReportError(VIR_ERR_OPERATION_INVALID,
> + _("Fail to alloc memory"));
> + goto cleanup;
> + }
> + list->nnames = 0;
> +
> + for (i = 0; i < count; i++) {
> + virSCSIDevicePtr dev = virSCSIDeviceListGet(mgr->activeScsiHostdevs, i);
> + list->names[list->nnames++] = strdup(virSCSIDeviceGetName(dev));
> + }
> + }
> +
> +cleanup:
> + virFreeHostdevNameList(list);
> + virObjectUnlock(mgr->activeScsiHostdevs);
> + return list;
> +}
> +
> +virHostdevNameListPtr
> +virGetDomainActivePciHostdevs(virHostdevManagerPtr mgr,
> + const char *drv_name,
> + const char *dom_name)
> +{
> + int i;
> + size_t count;
> + virHostdevNameListPtr list = NULL;
> + virObjectLock(mgr->activePciHostdevs);
> +
> + count = virPCIDeviceListCount(mgr->activePciHostdevs);
> + if (count > 0) {
> + if (VIR_ALLOC_N(list, 1) < 0) {
> + virReportError(VIR_ERR_OPERATION_INVALID,
> + _("Fail to alloc memory"));
> + goto cleanup;
> + }
> +
> + if (VIR_ALLOC_N(list->names,count) < 0) {
> + virReportError(VIR_ERR_OPERATION_INVALID,
> + _("Fail to alloc memory"));
> + goto cleanup;
> + }
> + list->nnames = 0;
> +
> + for (i = 0; i < count; i++) {
> + virPCIDevicePtr dev = virPCIDeviceListGet(mgr->activePciHostdevs, i);
> + char *usedby_drvname = NULL;
> + char *usedby_domname = NULL;
> + virPCIDeviceGetUsedBy(dev, &usedby_drvname, &usedby_domname);
> + if (STRNEQ(drv_name, usedby_drvname) &&
> + STRNEQ(dom_name, usedby_domname)) {
> + list->names[list->nnames++] = strdup(virPCIDeviceGetName(dev));
> + }
> + VIR_FREE(usedby_drvname);
> + VIR_FREE(usedby_domname);
> + }
> +
> + VIR_SHRINK_N(list->names, count, count - list->nnames);
> + }
> +
> +cleanup:
> + virFreeHostdevNameList(list);
> + virObjectUnlock(mgr->activePciHostdevs);
> + return list;
> +}
> +
> +virHostdevNameListPtr
> +virGetDomainActiveUsbHostdevs(virHostdevManagerPtr mgr,
> + const char *drv_name,
> + const char *dom_name)
> +{
> + int i;
> + size_t count;
> + virHostdevNameListPtr list = NULL;
> + virObjectLock(mgr->activeUsbHostdevs);
> +
> + count = virUSBDeviceListCount(mgr->activeUsbHostdevs);
> + if (count > 0) {
> + if (VIR_ALLOC_N(list, 1) < 0) {
> + virReportError(VIR_ERR_OPERATION_INVALID,
> + _("Fail to alloc memory"));
> + goto cleanup;
> + }
> +
> + if (VIR_ALLOC_N(list->names,count) < 0) {
> + virReportError(VIR_ERR_OPERATION_INVALID,
> + _("Fail to alloc memory"));
> + goto cleanup;
> + }
> + list->nnames = 0;
> +
> + for (i = 0; i < count; i++) {
> + virUSBDevicePtr usb = virUSBDeviceListGet(mgr->activeUsbHostdevs, i);
> + char *usedby_drvname = NULL;
> + char *usedby_domname = NULL;
> + virUSBDeviceGetUsedBy(usb, &usedby_drvname, &usedby_domname);
> + if (STRNEQ(drv_name, usedby_drvname) &&
> + STRNEQ(dom_name, usedby_domname)) {
> + list->names[list->nnames++] = strdup(virUSBDeviceGetName(usb));
> + }
> + VIR_FREE(usedby_drvname);
> + VIR_FREE(usedby_domname);
> + }
> +
> + VIR_SHRINK_N(list->names, count, count - list->nnames);
> + }
> +
> +cleanup:
> + virFreeHostdevNameList(list);
> + virObjectUnlock(mgr->activeUsbHostdevs);
> + return list;
> +}
> +
> +virHostdevNameListPtr
> +virGetDomainActiveScsiHostdevs(virHostdevManagerPtr mgr,
> + const char *drv_name,
> + const char *dom_name)
> +{
> + int i;
> + size_t count;
> + virHostdevNameListPtr list = NULL;
> + virObjectLock(mgr->activeScsiHostdevs);
> +
> + count = virSCSIDeviceListCount(mgr->activeScsiHostdevs);
> + if (count > 0) {
> + if (VIR_ALLOC_N(list, 1) < 0) {
> + virReportError(VIR_ERR_OPERATION_INVALID,
> + _("Fail to alloc memory"));
> + goto cleanup;
> + }
> +
> + if (VIR_ALLOC_N(list->names,count) < 0) {
> + virReportError(VIR_ERR_OPERATION_INVALID,
> + _("Fail to alloc memory"));
> + goto cleanup;
> + }
> + list->nnames = 0;
> +
> + for (i = 0; i < count; i++) {
> + virSCSIDevicePtr dev = virSCSIDeviceListGet(mgr->activeScsiHostdevs, i);
> + char *usedby_drvname = NULL;
> + char *usedby_domname = NULL;
> + virSCSIDeviceGetUsedBy(dev, &usedby_drvname, &usedby_domname);
> + if (STRNEQ(drv_name, usedby_drvname) &&
> + STRNEQ(dom_name, usedby_domname)) {
> + list->names[list->nnames++] = strdup(virSCSIDeviceGetName(dev));
> + }
> + VIR_FREE(usedby_drvname);
> + VIR_FREE(usedby_domname);
> + }
> +
> + VIR_SHRINK_N(list->names, count, count - list->nnames);
> + }
> +
> +cleanup:
> + virFreeHostdevNameList(list);
> + virObjectUnlock(mgr->activeScsiHostdevs);
> + return list;
> +}
> diff --git a/src/util/virhostdevmanager.h b/src/util/virhostdevmanager.h
> new file mode 100644
> index 0000000..9f26b9f
> --- /dev/null
> +++ b/src/util/virhostdevmanager.h
> @@ -0,0 +1,109 @@
> +/*
> + * Copyright (C) 2013 SUSE LINUX Products GmbH, Nuernberg, Germany.
> + *
> + * This library is free software; you can redistribute it and/or
> + * modify it under the terms of the GNU Lesser General Public
> + * License as published by the Free Software Foundation; either
> + * version 2.1 of the License, or (at your option) any later version.
> + *
> + * This library is distributed in the hope that it will be useful,
> + * but WITHOUT ANY WARRANTY; without even the implied warranty of
> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
> + * Lesser General Public License for more details.
> + *
> + * You should have received a copy of the GNU Lesser General Public
> + * License along with this library. If not, see
> + * <http://www.gnu.org/licenses/>.
> + *
> + * Author: Chunyan Liu <cyliu at suse.com>
> + */
Again - you need to carry over the author and copyright notices from the
original files this was based on.
> +
> +#ifndef __VIR_HOSTDEV_MANAGER_H__
> +# define __VIR_HOSTDEV_MANAGER_H__
> +
> +# include "internal.h"
> +# include "configmake.h"
> +# include "conf/domain_conf.h"
> +
> +# define HOSTDEV_STATE_DIR LOCALSTATEDIR "/run/libvirt/hostdevmanager"
> +
> +typedef enum {
> + VIR_SP_PCI_HOSTDEV = (1 << 0), /* support pci passthrough */
> + VIR_SP_USB_HOSTDEV = (1 << 1), /* support usb passthrough */
> + VIR_SP_SCSI_HOSTDEV = (1 << 2), /* support scsi passthrough */
> +
> + VIR_COLD_BOOT = (1 << 8), /* cold boot */
> + VIR_STRICT_ACS_CHECK = (1 << 9), /* strict acs check */
> +} virHostdevManagerFlag;
> +
> +typedef struct _virHostdevManager virHostdevManager;
> +typedef virHostdevManager *virHostdevManagerPtr;
> +
> +struct virHostdevNameList {
> + char **names;
> + size_t nnames;
> +};
> +typedef struct virHostdevNameList *virHostdevNameListPtr;
> +
> +int virHostdevManagerInit(void);
> +void virHostdevManagerCleanup(void);
> +virHostdevManagerPtr virHostdevManagerGetDefault(void);
> +
> +int virHostdevManagerPrepareHostdevs(virHostdevManagerPtr mgr,
> + const char *driver,
> + virDomainDefPtr def,
> + unsigned int flags);
> +void virHostdevManagerReAttachHostdevs(virHostdevManagerPtr mgr,
> + const char *driver,
> + virDomainDefPtr def,
> + unsigned int flags);
> +int virHostdevManagerPreparePciHostdevs(virHostdevManagerPtr mgr,
> + const char *drv_name,
> + const char *dom_name,
> + const unsigned char *uuid,
> + virDomainHostdevDefPtr *hostdevs,
> + int nhostdevs,
> + unsigned int flags);
> +int virHostdevManagerPrepareUsbHostdevs(virHostdevManagerPtr mgr,
> + const char *driver,
> + virDomainDefPtr def,
> + bool coldBoot);
> +int virHostdevManagerPrepareScsiHostdevs(virHostdevManagerPtr mgr,
> + const char *drv_name,
> + const char *dom_name,
> + virDomainHostdevDefPtr *hostdevs,
> + int nhostdevs);
> +void virHostdevManagerReAttachPciHostdevs(virHostdevManagerPtr mgr,
> + const char *drv_name,
> + const char *dom_name,
> + virDomainHostdevDefPtr *hostdevs,
> + int nhostdevs);
> +void virHostdevManagerReAttachUsbHostdevs(virHostdevManagerPtr mgr,
> + const char *drv_name,
> + const char *dom_name,
> + virDomainHostdevDefPtr *hostdevs,
> + int nhostdevs);
> +void virHostdevManagerReAttachScsiHostdevs(virHostdevManagerPtr mgr,
> + const char *drv_name,
> + const char *dom_name,
> + virDomainHostdevDefPtr *hostdevs,
> + int nhostdevs);
> +
> +virHostdevNameListPtr virGetActivePciHostdevs(virHostdevManagerPtr mgr);
> +virHostdevNameListPtr virGetActiveUsbHostdevs(virHostdevManagerPtr mgr);
> +virHostdevNameListPtr virGetActiveScsiHostdevs(virHostdevManagerPtr mgr);
> +virHostdevNameListPtr virGetDomainActivePciHostdevs(virHostdevManagerPtr mgr,
> + const char *drv_name,
> + const char *dom_name);
> +virHostdevNameListPtr virGetDomainActiveUsbHostdevs(virHostdevManagerPtr mgr,
> + const char *drv_name,
> + const char *dom_name);
> +virHostdevNameListPtr virGetDomainActiveScsiHostdevs(virHostdevManagerPtr mgr,
> + const char *drv_name,
> + const char *dom_name);
> +/*After using any of the above four *Get* APIs, virFreeHostdevNameList should
> + *be called to free memory.
> + */
> +void virFreeHostdevNameList(virHostdevNameListPtr list);
> +
> +#endif /* __VIR_HOSTDEV_MANAGER_H__ */
> diff --git a/src/util/virpci.c b/src/util/virpci.c
> index 5865613..7fe0921 100644
> --- a/src/util/virpci.c
> +++ b/src/util/virpci.c
> @@ -62,7 +62,10 @@ struct _virPCIDevice {
> char name[PCI_ADDR_LEN]; /* domain:bus:slot.function */
> char id[PCI_ID_LEN]; /* product vendor */
> char *path;
> - const char *used_by; /* The domain which uses the device */
> +
> + /* The driver:domain which uses the device */
> + const char *used_by_drvname;
> + const char *used_by_domname;
>
> unsigned int pcie_cap_pos;
> unsigned int pci_pm_cap_pos;
> @@ -1553,15 +1556,17 @@ virPCIDeviceSetReprobe(virPCIDevicePtr dev, bool reprobe)
> }
>
> void
> -virPCIDeviceSetUsedBy(virPCIDevicePtr dev, const char *name)
> +virPCIDeviceSetUsedBy(virPCIDevicePtr dev, const char *drv_name, const char *dom_name)
> {
> - dev->used_by = name;
> + dev->used_by_drvname = drv_name;
> + dev->used_by_domname = dom_name;
> }
>
> -const char *
> -virPCIDeviceGetUsedBy(virPCIDevicePtr dev)
> +void
> +virPCIDeviceGetUsedBy(virPCIDevicePtr dev, char **drv_name, char **dom_name)
> {
> - return dev->used_by;
> + *drv_name = strdup(dev->used_by_drvname);
> + *dom_name = strdup(dev->used_by_domname);
> }
>
> void virPCIDeviceReattachInit(virPCIDevicePtr pci)
> diff --git a/src/util/virpci.h b/src/util/virpci.h
> index 7bcadb4..294cb0e 100644
> --- a/src/util/virpci.h
> +++ b/src/util/virpci.h
> @@ -66,8 +66,11 @@ void virPCIDeviceSetStubDriver(virPCIDevicePtr dev,
> const char *driver);
> const char *virPCIDeviceGetStubDriver(virPCIDevicePtr dev);
> void virPCIDeviceSetUsedBy(virPCIDevice *dev,
> - const char *used_by);
> -const char *virPCIDeviceGetUsedBy(virPCIDevice *dev);
> + const char *drv_name,
> + const char *dom_name);
> +void virPCIDeviceGetUsedBy(virPCIDevice *dev,
> + char **drv_name,
> + char **dom_name);
> unsigned int virPCIDeviceGetUnbindFromStub(virPCIDevicePtr dev);
> void virPCIDeviceSetUnbindFromStub(virPCIDevice *dev,
> bool unbind);
> diff --git a/src/util/virscsi.c b/src/util/virscsi.c
> index d6685fa..3993ac4 100644
> --- a/src/util/virscsi.c
> +++ b/src/util/virscsi.c
> @@ -55,7 +55,10 @@ struct _virSCSIDevice {
> char *name; /* adapter:bus:target:unit */
> char *id; /* model:vendor */
> char *sg_path; /* e.g. /dev/sg2 */
> - const char *used_by; /* name of the domain using this dev */
> +
> + /* driver:domain using this dev */
> + const char *used_by_drvname;
> + const char *used_by_domname;
>
> bool readonly;
> };
> @@ -234,15 +237,18 @@ virSCSIDeviceFree(virSCSIDevicePtr dev)
>
> void
> virSCSIDeviceSetUsedBy(virSCSIDevicePtr dev,
> - const char *name)
> + const char *drvname,
> + const char *domname)
> {
> - dev->used_by = name;
> + dev->used_by_drvname = drvname;
> + dev->used_by_domname = domname;
> }
>
> -const char *
> -virSCSIDeviceGetUsedBy(virSCSIDevicePtr dev)
> +void
> +virSCSIDeviceGetUsedBy(virSCSIDevicePtr dev, char **drvname, char **domname)
> {
> - return dev->used_by;
> + *drvname = strdup(dev->used_by_drvname);
> + *domname = strdup(dev->used_by_domname);
> }
>
> const char *
> diff --git a/src/util/virscsi.h b/src/util/virscsi.h
> index 8268cdf..4ae225d 100644
> --- a/src/util/virscsi.h
> +++ b/src/util/virscsi.h
> @@ -45,8 +45,8 @@ virSCSIDevicePtr virSCSIDeviceNew(const char *adapter,
> bool readonly);
>
> void virSCSIDeviceFree(virSCSIDevicePtr dev);
> -void virSCSIDeviceSetUsedBy(virSCSIDevicePtr dev, const char *name);
> -const char *virSCSIDeviceGetUsedBy(virSCSIDevicePtr dev);
> +void virSCSIDeviceSetUsedBy(virSCSIDevicePtr dev, const char *drvname, const char *domname);
> +void virSCSIDeviceGetUsedBy(virSCSIDevicePtr dev, char **drvname, char **domname);
> const char *virSCSIDeviceGetName(virSCSIDevicePtr dev);
> unsigned int virSCSIDeviceGetAdapter(virSCSIDevicePtr dev);
> unsigned int virSCSIDeviceGetBus(virSCSIDevicePtr dev);
> diff --git a/src/util/virusb.c b/src/util/virusb.c
> index 27ba9c7..043206e 100644
> --- a/src/util/virusb.c
> +++ b/src/util/virusb.c
> @@ -55,7 +55,10 @@ struct _virUSBDevice {
> char name[USB_ADDR_LEN]; /* domain:bus:slot.function */
> char id[USB_ID_LEN]; /* product vendor */
> char *path;
> - const char *used_by; /* name of the domain using this dev */
> +
> + /* driver:domain using this dev */
> + const char *used_by_drvname;
> + const char *used_by_domname;
> };
>
> struct _virUSBDeviceList {
> @@ -383,16 +386,20 @@ virUSBDeviceFree(virUSBDevicePtr dev)
> VIR_FREE(dev);
> }
>
> -
> void virUSBDeviceSetUsedBy(virUSBDevicePtr dev,
> - const char *name)
> + const char *drv_name,
> + const char *dom_name)
> {
> - dev->used_by = name;
> + dev->used_by_drvname = drv_name;
> + dev->used_by_domname = dom_name;
> }
>
> -const char * virUSBDeviceGetUsedBy(virUSBDevicePtr dev)
> +void virUSBDeviceGetUsedBy(virUSBDevicePtr dev,
> + char **drv_name,
> + char **dom_name)
> {
> - return dev->used_by;
> + *drv_name = strdup(dev->used_by_drvname);
> + *dom_name = strdup(dev->used_by_domname);
> }
>
> const char *virUSBDeviceGetName(virUSBDevicePtr dev)
> diff --git a/src/util/virusb.h b/src/util/virusb.h
> index aa59d12..16e48e5 100644
> --- a/src/util/virusb.h
> +++ b/src/util/virusb.h
> @@ -60,8 +60,8 @@ int virUSBDeviceFind(unsigned int vendor,
> virUSBDevicePtr *usb);
>
> void virUSBDeviceFree(virUSBDevicePtr dev);
> -void virUSBDeviceSetUsedBy(virUSBDevicePtr dev, const char *name);
> -const char *virUSBDeviceGetUsedBy(virUSBDevicePtr dev);
> +void virUSBDeviceSetUsedBy(virUSBDevicePtr dev, const char *drv_name, const char *dom_name);
> +void virUSBDeviceGetUsedBy(virUSBDevicePtr dev, char **drv_name, char **dom_name);
> const char *virUSBDeviceGetName(virUSBDevicePtr dev);
>
> unsigned int virUSBDeviceGetBus(virUSBDevicePtr dev);
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