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Add disk/net resource auditing to QEMU driver
Add auditing of all initial disk/net assignments to QEMU guests at startup. Add auditing for all hotplug & unplug events and disk media changes. * src/qemu/qemu_driver.c: Add disk/net resource auditing
This commit is contained in:
Daniel P. Berrange
parent
160b5479f2
commit
8dc136b5fc
@ -3668,6 +3668,79 @@ static int qemuDomainSnapshotSetActive(virDomainObjPtr vm,
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static int qemuDomainSnapshotSetInactive(virDomainObjPtr vm,
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char *snapshotDir);
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static void qemuDomainDiskAudit(virDomainObjPtr vm,
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virDomainDiskDefPtr oldDef,
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virDomainDiskDefPtr newDef,
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const char *reason,
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bool success)
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{
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char uuidstr[VIR_UUID_STRING_BUFLEN];
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char *vmname;
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char *oldsrc = NULL;
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char *newsrc = NULL;
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virUUIDFormat(vm->def->uuid, uuidstr);
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if (!(vmname = virAuditEncode("vm", vm->def->name))) {
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VIR_WARN0("OOM while encoding audit message");
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return;
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}
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if (!(oldsrc = virAuditEncode("old-disk",
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oldDef && oldDef->src ?
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oldDef->src : "?"))) {
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VIR_WARN0("OOM while encoding audit message");
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goto cleanup;
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}
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if (!(newsrc = virAuditEncode("new-disk",
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newDef && newDef->src ?
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newDef->src : "?"))) {
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VIR_WARN0("OOM while encoding audit message");
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goto cleanup;
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}
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VIR_AUDIT(VIR_AUDIT_RECORD_RESOURCE, success,
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"resrc=disk reason=%s %s uuid=%s %s %s",
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reason, vmname, uuidstr,
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oldsrc, newsrc);
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cleanup:
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VIR_FREE(vmname);
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VIR_FREE(oldsrc);
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VIR_FREE(newsrc);
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}
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static void qemuDomainNetAudit(virDomainObjPtr vm,
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virDomainNetDefPtr oldDef,
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virDomainNetDefPtr newDef,
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const char *reason,
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bool success)
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{
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char uuidstr[VIR_UUID_STRING_BUFLEN];
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char newMacstr[VIR_MAC_STRING_BUFLEN];
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char oldMacstr[VIR_MAC_STRING_BUFLEN];
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char *vmname;
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virUUIDFormat(vm->def->uuid, uuidstr);
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if (oldDef)
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virFormatMacAddr(oldDef->mac, oldMacstr);
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if (newDef)
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virFormatMacAddr(newDef->mac, newMacstr);
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if (!(vmname = virAuditEncode("vm", vm->def->name))) {
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VIR_WARN0("OOM while encoding audit message");
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return;
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}
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VIR_AUDIT(VIR_AUDIT_RECORD_RESOURCE, success,
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"resrc=net reason=%s %s uuid=%s old-net='%s' new-net='%s'",
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reason, vmname, uuidstr,
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oldDef ? oldMacstr : "?",
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newDef ? newMacstr : "?");
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VIR_FREE(vmname);
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}
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static void qemuDomainLifecycleAudit(virDomainObjPtr vm,
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const char *op,
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const char *reason,
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@ -3677,6 +3750,7 @@ static void qemuDomainLifecycleAudit(virDomainObjPtr vm,
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char *vmname;
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virUUIDFormat(vm->def->uuid, uuidstr);
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if (!(vmname = virAuditEncode("vm", vm->def->name))) {
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VIR_WARN0("OOM while encoding audit message");
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return;
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@ -3690,6 +3764,19 @@ static void qemuDomainLifecycleAudit(virDomainObjPtr vm,
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static void qemuDomainStartAudit(virDomainObjPtr vm, const char *reason, bool success)
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{
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int i;
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for (i = 0 ; i < vm->def->ndisks ; i++) {
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virDomainDiskDefPtr disk = vm->def->disks[i];
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if (disk->src) /* Skips CDROM without media initially inserted */
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qemuDomainDiskAudit(vm, NULL, disk, "start", true);
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}
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for (i = 0 ; i < vm->def->nnets ; i++) {
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virDomainNetDefPtr net = vm->def->nets[i];
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qemuDomainNetAudit(vm, NULL, net, "start", true);
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}
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qemuDomainLifecycleAudit(vm, "start", reason, success);
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}
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@ -7565,6 +7652,8 @@ static int qemudDomainChangeEjectableMedia(struct qemud_driver *driver,
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}
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qemuDomainObjExitMonitorWithDriver(driver, vm);
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qemuDomainDiskAudit(vm, origdisk, disk, "update", ret >= 0);
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if (ret < 0)
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goto error;
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@ -7664,6 +7753,8 @@ static int qemudDomainAttachPciDiskDevice(struct qemud_driver *driver,
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}
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qemuDomainObjExitMonitorWithDriver(driver, vm);
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qemuDomainDiskAudit(vm, NULL, disk, "attach", ret >= 0);
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if (ret < 0)
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goto error;
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@ -7899,6 +7990,8 @@ static int qemudDomainAttachSCSIDisk(struct qemud_driver *driver,
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}
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qemuDomainObjExitMonitorWithDriver(driver, vm);
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qemuDomainDiskAudit(vm, NULL, disk, "attach", ret >= 0);
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if (ret < 0)
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goto error;
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@ -7984,6 +8077,8 @@ static int qemudDomainAttachUsbMassstorageDevice(struct qemud_driver *driver,
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}
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qemuDomainObjExitMonitorWithDriver(driver, vm);
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qemuDomainDiskAudit(vm, NULL, disk, "attach", ret >= 0);
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if (ret < 0)
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goto error;
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@ -8118,11 +8213,13 @@ static int qemudDomainAttachNetDevice(virConnectPtr conn,
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(qemuCmdFlags & QEMUD_CMD_FLAG_DEVICE)) {
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if (qemuMonitorAddNetdev(priv->mon, netstr) < 0) {
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qemuDomainObjExitMonitorWithDriver(driver, vm);
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qemuDomainNetAudit(vm, NULL, net, "attach", false);
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goto try_tapfd_close;
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}
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} else {
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if (qemuMonitorAddHostNetwork(priv->mon, netstr) < 0) {
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qemuDomainObjExitMonitorWithDriver(driver, vm);
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qemuDomainNetAudit(vm, NULL, net, "attach", false);
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goto try_tapfd_close;
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}
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}
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@ -8150,12 +8247,14 @@ static int qemudDomainAttachNetDevice(virConnectPtr conn,
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if (qemuCmdFlags & QEMUD_CMD_FLAG_DEVICE) {
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if (qemuMonitorAddDevice(priv->mon, nicstr) < 0) {
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qemuDomainObjExitMonitorWithDriver(driver, vm);
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qemuDomainNetAudit(vm, NULL, net, "attach", false);
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goto try_remove;
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}
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} else {
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if (qemuMonitorAddPCINetwork(priv->mon, nicstr,
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&guestAddr) < 0) {
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qemuDomainObjExitMonitorWithDriver(driver, vm);
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qemuDomainNetAudit(vm, NULL, net, "attach", false);
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goto try_remove;
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}
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net->info.type = VIR_DOMAIN_DEVICE_ADDRESS_TYPE_PCI;
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@ -8163,6 +8262,8 @@ static int qemudDomainAttachNetDevice(virConnectPtr conn,
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}
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qemuDomainObjExitMonitorWithDriver(driver, vm);
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qemuDomainNetAudit(vm, NULL, net, "attach", true);
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ret = 0;
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vm->def->nets[vm->def->nnets++] = net;
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@ -8860,6 +8961,8 @@ static int qemudDomainDetachPciDiskDevice(struct qemud_driver *driver,
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}
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qemuDomainObjExitMonitorWithDriver(driver, vm);
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qemuDomainDiskAudit(vm, detach, NULL, "detach", ret >= 0);
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if ((qemuCmdFlags & QEMUD_CMD_FLAG_DEVICE) &&
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qemuDomainPCIAddressReleaseAddr(priv->pciaddrs, &detach->info) < 0)
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VIR_WARN("Unable to release PCI address on %s", dev->data.disk->src);
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@ -8928,6 +9031,8 @@ static int qemudDomainDetachSCSIDiskDevice(struct qemud_driver *driver,
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}
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qemuDomainObjExitMonitorWithDriver(driver, vm);
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qemuDomainDiskAudit(vm, detach, NULL, "detach", ret >= 0);
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virDomainDiskRemove(vm->def, i);
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virDomainDiskDefFree(detach);
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@ -9081,12 +9186,14 @@ qemudDomainDetachNetDevice(struct qemud_driver *driver,
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if (qemuCmdFlags & QEMUD_CMD_FLAG_DEVICE) {
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if (qemuMonitorDelDevice(priv->mon, detach->info.alias) < 0) {
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qemuDomainObjExitMonitor(vm);
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qemuDomainNetAudit(vm, detach, NULL, "detach", false);
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goto cleanup;
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}
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} else {
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if (qemuMonitorRemovePCIDevice(priv->mon,
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&detach->info.addr.pci) < 0) {
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qemuDomainObjExitMonitorWithDriver(driver, vm);
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qemuDomainNetAudit(vm, detach, NULL, "detach", false);
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goto cleanup;
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}
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}
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@ -9095,16 +9202,20 @@ qemudDomainDetachNetDevice(struct qemud_driver *driver,
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(qemuCmdFlags & QEMUD_CMD_FLAG_DEVICE)) {
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if (qemuMonitorRemoveNetdev(priv->mon, hostnet_name) < 0) {
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qemuDomainObjExitMonitorWithDriver(driver, vm);
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qemuDomainNetAudit(vm, detach, NULL, "detach", false);
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goto cleanup;
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}
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} else {
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if (qemuMonitorRemoveHostNetwork(priv->mon, vlan, hostnet_name) < 0) {
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qemuDomainObjExitMonitorWithDriver(driver, vm);
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qemuDomainNetAudit(vm, detach, NULL, "detach", false);
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goto cleanup;
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}
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}
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qemuDomainObjExitMonitorWithDriver(driver, vm);
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qemuDomainNetAudit(vm, detach, NULL, "detach", true);
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if ((qemuCmdFlags & QEMUD_CMD_FLAG_DEVICE) &&
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qemuDomainPCIAddressReleaseAddr(priv->pciaddrs, &detach->info) < 0)
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VIR_WARN0("Unable to release PCI address on NIC");
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