qemu: change qemuDomainTaint APIs to accept qemuDomainLogContextPtr

The qemuDomainTaint APIs currently expect to be passed a log file
descriptor. Change them to instead use a qemuDomainLogContextPtr
to hide the implementation details.

Signed-off-by: Daniel P. Berrange <berrange@redhat.com>

src/qemu/qemu_domain.c

@@ -2128,9 +2128,10 @@ qemuDomainDefFormatLive(virQEMUDriverPtr driver,
 void qemuDomainObjTaint(virQEMUDriverPtr driver,
                         virDomainObjPtr obj,
                         virDomainTaintFlags taint,
-                        int logFD)
+                        qemuDomainLogContextPtr logCtxt)
 {
     virErrorPtr orig_err = NULL;
+    bool closeLog = false;
 
     if (virDomainObjTaint(obj, taint)) {
         char uuidstr[VIR_UUID_STRING_BUFLEN];
@@ -2146,11 +2147,27 @@ void qemuDomainObjTaint(virQEMUDriverPtr driver,
          * preserve original error, and clear any error that
          * is raised */
         orig_err = virSaveLastError();
-        if (qemuDomainAppendLog(driver, obj, logFD,
-                                "Domain id=%d is tainted: %s\n",
-                                obj->def->id,
-                                virDomainTaintTypeToString(taint)) < 0)
+        if (logCtxt == NULL) {
+            logCtxt = qemuDomainLogContextNew(driver, obj,
+                                              QEMU_DOMAIN_LOG_CONTEXT_MODE_ATTACH);
+            if (!logCtxt) {
+                if (orig_err) {
+                    virSetError(orig_err);
+                    virFreeError(orig_err);
+                }
+                VIR_WARN("Unable to open domainlog");
+                return;
+            }
+            closeLog = true;
+        }
+
+        if (qemuDomainLogContextWrite(logCtxt,
+                                      "Domain id=%d is tainted: %s\n",
+                                      obj->def->id,
+                                      virDomainTaintTypeToString(taint)) < 0)
             virResetLastError();
+        if (closeLog)
+            qemuDomainLogContextFree(logCtxt);
         if (orig_err) {
             virSetError(orig_err);
             virFreeError(orig_err);
@@ -2161,7 +2178,7 @@ void qemuDomainObjTaint(virQEMUDriverPtr driver,
 
 void qemuDomainObjCheckTaint(virQEMUDriverPtr driver,
                              virDomainObjPtr obj,
-                             int logFD)
+                             qemuDomainLogContextPtr logCtxt)
 {
     size_t i;
     virQEMUDriverConfigPtr cfg = virQEMUDriverGetConfig(driver);
@@ -2171,32 +2188,32 @@ void qemuDomainObjCheckTaint(virQEMUDriverPtr driver,
         (!cfg->clearEmulatorCapabilities ||
          cfg->user == 0 ||
          cfg->group == 0))
-        qemuDomainObjTaint(driver, obj, VIR_DOMAIN_TAINT_HIGH_PRIVILEGES, logFD);
+        qemuDomainObjTaint(driver, obj, VIR_DOMAIN_TAINT_HIGH_PRIVILEGES, logCtxt);
 
     if (priv->hookRun)
-        qemuDomainObjTaint(driver, obj, VIR_DOMAIN_TAINT_HOOK, logFD);
+        qemuDomainObjTaint(driver, obj, VIR_DOMAIN_TAINT_HOOK, logCtxt);
 
     if (obj->def->namespaceData) {
         qemuDomainCmdlineDefPtr qemucmd = obj->def->namespaceData;
         if (qemucmd->num_args || qemucmd->num_env)
-            qemuDomainObjTaint(driver, obj, VIR_DOMAIN_TAINT_CUSTOM_ARGV, logFD);
+            qemuDomainObjTaint(driver, obj, VIR_DOMAIN_TAINT_CUSTOM_ARGV, logCtxt);
     }
 
     if (obj->def->cpu && obj->def->cpu->mode == VIR_CPU_MODE_HOST_PASSTHROUGH)
-        qemuDomainObjTaint(driver, obj, VIR_DOMAIN_TAINT_HOST_CPU, logFD);
+        qemuDomainObjTaint(driver, obj, VIR_DOMAIN_TAINT_HOST_CPU, logCtxt);
 
     for (i = 0; i < obj->def->ndisks; i++)
-        qemuDomainObjCheckDiskTaint(driver, obj, obj->def->disks[i], logFD);
+        qemuDomainObjCheckDiskTaint(driver, obj, obj->def->disks[i], logCtxt);
 
     for (i = 0; i < obj->def->nhostdevs; i++)
         qemuDomainObjCheckHostdevTaint(driver, obj, obj->def->hostdevs[i],
-                                       logFD);
+                                       logCtxt);
 
     for (i = 0; i < obj->def->nnets; i++)
-        qemuDomainObjCheckNetTaint(driver, obj, obj->def->nets[i], logFD);
+        qemuDomainObjCheckNetTaint(driver, obj, obj->def->nets[i], logCtxt);
 
     if (obj->def->os.dtb)
-        qemuDomainObjTaint(driver, obj, VIR_DOMAIN_TAINT_CUSTOM_DTB, logFD);
+        qemuDomainObjTaint(driver, obj, VIR_DOMAIN_TAINT_CUSTOM_DTB, logCtxt);
 
     virObjectUnref(cfg);
 }
@@ -2205,24 +2222,24 @@ void qemuDomainObjCheckTaint(virQEMUDriverPtr driver,
 void qemuDomainObjCheckDiskTaint(virQEMUDriverPtr driver,
                                  virDomainObjPtr obj,
                                  virDomainDiskDefPtr disk,
-                                 int logFD)
+                                 qemuDomainLogContextPtr logCtxt)
 {
     virQEMUDriverConfigPtr cfg = virQEMUDriverGetConfig(driver);
     int format = virDomainDiskGetFormat(disk);
 
     if ((!format || format == VIR_STORAGE_FILE_AUTO) &&
         cfg->allowDiskFormatProbing)
-        qemuDomainObjTaint(driver, obj, VIR_DOMAIN_TAINT_DISK_PROBING, logFD);
+        qemuDomainObjTaint(driver, obj, VIR_DOMAIN_TAINT_DISK_PROBING, logCtxt);
 
     if (disk->rawio == VIR_TRISTATE_BOOL_YES)
         qemuDomainObjTaint(driver, obj, VIR_DOMAIN_TAINT_HIGH_PRIVILEGES,
-                           logFD);
+                           logCtxt);
 
     if (disk->device == VIR_DOMAIN_DISK_DEVICE_CDROM &&
         virStorageSourceGetActualType(disk->src) == VIR_STORAGE_TYPE_BLOCK &&
         disk->src->path)
         qemuDomainObjTaint(driver, obj, VIR_DOMAIN_TAINT_CDROM_PASSTHROUGH,
-                           logFD);
+                           logCtxt);
 
     virObjectUnref(cfg);
 }
@@ -2231,21 +2248,21 @@ void qemuDomainObjCheckDiskTaint(virQEMUDriverPtr driver,
 void qemuDomainObjCheckHostdevTaint(virQEMUDriverPtr driver,
                                     virDomainObjPtr obj,
                                     virDomainHostdevDefPtr hostdev,
-                                    int logFD)
+                                    qemuDomainLogContextPtr logCtxt)
 {
     virDomainHostdevSubsysSCSIPtr scsisrc = &hostdev->source.subsys.u.scsi;
 
     if (hostdev->source.subsys.type == VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_SCSI &&
         scsisrc->rawio == VIR_TRISTATE_BOOL_YES)
             qemuDomainObjTaint(driver, obj, VIR_DOMAIN_TAINT_HIGH_PRIVILEGES,
-                               logFD);
+                               logCtxt);
 }
 
 
 void qemuDomainObjCheckNetTaint(virQEMUDriverPtr driver,
                                 virDomainObjPtr obj,
                                 virDomainNetDefPtr net,
-                                int logFD)
+                                qemuDomainLogContextPtr logCtxt)
 {
     /* script is only useful for NET_TYPE_ETHERNET (qemu) and
      * NET_TYPE_BRIDGE (xen), but could be (incorrectly) specified for
@@ -2253,7 +2270,7 @@ void qemuDomainObjCheckNetTaint(virQEMUDriverPtr driver,
      * the soup, so it should taint the domain.
      */
     if (net->script != NULL)
-        qemuDomainObjTaint(driver, obj, VIR_DOMAIN_TAINT_SHELL_SCRIPTS, logFD);
+        qemuDomainObjTaint(driver, obj, VIR_DOMAIN_TAINT_SHELL_SCRIPTS, logCtxt);
 }
 
 
@@ -2434,45 +2451,6 @@ void qemuDomainLogContextFree(qemuDomainLogContextPtr ctxt)
 }
 
 
-int qemuDomainAppendLog(virQEMUDriverPtr driver,
-                        virDomainObjPtr obj,
-                        int logFD,
-                        const char *fmt, ...)
-{
-    va_list argptr;
-    char *message = NULL;
-    int ret = -1;
-    qemuDomainLogContextPtr logCtxt = NULL;
-
-    va_start(argptr, fmt);
-
-    if (logFD == -1) {
-        logCtxt = qemuDomainLogContextNew(driver, obj,
-                                          QEMU_DOMAIN_LOG_CONTEXT_MODE_ATTACH);
-        if (!logCtxt)
-            goto cleanup;
-        logFD = qemuDomainLogContextGetWriteFD(logCtxt);
-    }
-
-    if (virVasprintf(&message, fmt, argptr) < 0)
-        goto cleanup;
-    if (safewrite(logFD, message, strlen(message)) < 0) {
-        virReportSystemError(errno, _("Unable to write to domain logfile %s"),
-                             obj->def->name);
-        goto cleanup;
-    }
-
-    ret = 0;
-
- cleanup:
-    va_end(argptr);
-
-    qemuDomainLogContextFree(logCtxt);
-
-    VIR_FREE(message);
-    return ret;
-}
-
 /* Locate an appropriate 'qemu-img' binary.  */
 const char *
 qemuFindQemuImgBinary(virQEMUDriverPtr driver)

src/qemu/qemu_domain.h

@@ -334,23 +334,23 @@ char *qemuDomainDefFormatLive(virQEMUDriverPtr driver,
 void qemuDomainObjTaint(virQEMUDriverPtr driver,
                         virDomainObjPtr obj,
                         virDomainTaintFlags taint,
-                        int logFD);
+                        qemuDomainLogContextPtr logCtxt);
 
 void qemuDomainObjCheckTaint(virQEMUDriverPtr driver,
                              virDomainObjPtr obj,
-                             int logFD);
+                             qemuDomainLogContextPtr logCtxt);
 void qemuDomainObjCheckDiskTaint(virQEMUDriverPtr driver,
                                  virDomainObjPtr obj,
                                  virDomainDiskDefPtr disk,
-                                 int logFD);
+                                 qemuDomainLogContextPtr logCtxt);
 void qemuDomainObjCheckHostdevTaint(virQEMUDriverPtr driver,
                                     virDomainObjPtr obj,
                                     virDomainHostdevDefPtr disk,
-                                    int logFD);
+                                    qemuDomainLogContextPtr logCtxt);
 void qemuDomainObjCheckNetTaint(virQEMUDriverPtr driver,
                                 virDomainObjPtr obj,
                                 virDomainNetDefPtr net,
-                                int logFD);
+                                qemuDomainLogContextPtr logCtxt);
 
 typedef enum {
     QEMU_DOMAIN_LOG_CONTEXT_MODE_START,
@@ -372,11 +372,6 @@ off_t qemuDomainLogContextGetPosition(qemuDomainLogContextPtr ctxt);
 void qemuDomainLogContextRef(qemuDomainLogContextPtr ctxt);
 void qemuDomainLogContextFree(qemuDomainLogContextPtr ctxt);
 
-int qemuDomainAppendLog(virQEMUDriverPtr driver,
-                        virDomainObjPtr vm,
-                        int logFD,
-                        const char *fmt, ...) ATTRIBUTE_FMT_PRINTF(4, 5);
-
 const char *qemuFindQemuImgBinary(virQEMUDriverPtr driver);
 
 int qemuDomainSnapshotWriteMetadata(virDomainObjPtr vm,

src/qemu/qemu_driver.c

@@ -7706,7 +7706,7 @@ qemuDomainAttachDeviceLive(virDomainObjPtr vm,
 
     switch ((virDomainDeviceType) dev->type) {
     case VIR_DOMAIN_DEVICE_DISK:
-        qemuDomainObjCheckDiskTaint(driver, vm, dev->data.disk, -1);
+        qemuDomainObjCheckDiskTaint(driver, vm, dev->data.disk, NULL);
         ret = qemuDomainAttachDeviceDiskLive(dom->conn, driver, vm, dev);
         if (!ret) {
             alias = dev->data.disk->info.alias;
@@ -7730,7 +7730,7 @@ qemuDomainAttachDeviceLive(virDomainObjPtr vm,
         break;
 
     case VIR_DOMAIN_DEVICE_NET:
-        qemuDomainObjCheckNetTaint(driver, vm, dev->data.net, -1);
+        qemuDomainObjCheckNetTaint(driver, vm, dev->data.net, NULL);
         ret = qemuDomainAttachNetDevice(dom->conn, driver, vm,
                                         dev->data.net);
         if (!ret) {
@@ -7740,7 +7740,7 @@ qemuDomainAttachDeviceLive(virDomainObjPtr vm,
         break;
 
     case VIR_DOMAIN_DEVICE_HOSTDEV:
-        qemuDomainObjCheckHostdevTaint(driver, vm, dev->data.hostdev, -1);
+        qemuDomainObjCheckHostdevTaint(driver, vm, dev->data.hostdev, NULL);
         ret = qemuDomainAttachHostDevice(dom->conn, driver, vm,
                                          dev->data.hostdev);
         if (!ret) {
@@ -7988,7 +7988,7 @@ qemuDomainUpdateDeviceLive(virConnectPtr conn,
 
     switch ((virDomainDeviceType) dev->type) {
     case VIR_DOMAIN_DEVICE_DISK:
-        qemuDomainObjCheckDiskTaint(driver, vm, dev->data.disk, -1);
+        qemuDomainObjCheckDiskTaint(driver, vm, dev->data.disk, NULL);
         ret = qemuDomainChangeDiskLive(conn, vm, dev, driver, force);
         break;
     case VIR_DOMAIN_DEVICE_GRAPHICS:
@@ -15823,7 +15823,7 @@ static int qemuDomainQemuMonitorCommand(virDomainPtr domain, const char *cmd,
 
     priv = vm->privateData;
 
-    qemuDomainObjTaint(driver, vm, VIR_DOMAIN_TAINT_CUSTOM_MONITOR, -1);
+    qemuDomainObjTaint(driver, vm, VIR_DOMAIN_TAINT_CUSTOM_MONITOR, NULL);
 
     hmp = !!(flags & VIR_DOMAIN_QEMU_MONITOR_COMMAND_HMP);
 

src/qemu/qemu_process.c

@@ -4780,7 +4780,7 @@ qemuProcessLaunch(virConnectPtr conn,
 
     qemuLogOperation(vm, "starting up", logfile, cmd);
 
-    qemuDomainObjCheckTaint(driver, vm, logfile);
+    qemuDomainObjCheckTaint(driver, vm, logCtxt);
 
     qemuDomainLogContextMarkPosition(logCtxt);
 
@@ -5633,7 +5633,7 @@ int qemuProcessAttach(virConnectPtr conn ATTRIBUTE_UNUSED,
     }
     VIR_FREE(timestamp);
 
-    qemuDomainObjTaint(driver, vm, VIR_DOMAIN_TAINT_EXTERNAL_LAUNCH, logfile);
+    qemuDomainObjTaint(driver, vm, VIR_DOMAIN_TAINT_EXTERNAL_LAUNCH, logCtxt);
 
     VIR_DEBUG("Waiting for monitor to show up");
     if (qemuProcessWaitForMonitor(driver, vm, QEMU_ASYNC_JOB_NONE, priv->qemuCaps, NULL) < 0)