Add sysinfo/smbios support to the QEmu driver

The patch is based on the possiblity in the QEmu command line to
add -smbios options allowing to override the default values picked
by QEmu. We need to detect this first from QEmu help output.
If the domain is defined with smbios to be inherited from host
then we pass the values coming from the Host own SMBIOS, but
if the domain is defined with smbios to come from sysinfo, we
use the ones coming from the domain definition.

* src/qemu/qemu_conf.h: add the QEMUD_CMD_FLAG_SMBIOS_TYPE enum
  value
* src/qemu/qemu_conf.c: scan the help output for the smbios support,
  and if available add support based on the domain definitions,
  and host data
* tests/qemuhelptest.c: add the new enum in the outputs

src/qemu/qemu_conf.c

@@ -1243,6 +1243,8 @@ static unsigned long long qemudComputeCmdFlags(const char *help,
         flags |= QEMUD_CMD_FLAG_BOOT_MENU;
     if (strstr(help, "-fsdev"))
         flags |= QEMUD_CMD_FLAG_FSDEV;
+    if (strstr(help, "-smbios type"))
+        flags |= QEMUD_CMD_FLAG_SMBIOS_TYPE;
 
     if (strstr(help, "-netdev")) {
         /* Disable -netdev on 0.12 since although it exists,
@@ -3512,6 +3514,83 @@ error:
     return NULL;
 }
 
+static char *qemuBuildSmbiosBiosStr(virSysinfoDefPtr def)
+{
+    virBuffer buf = VIR_BUFFER_INITIALIZER;
+
+    if ((def->bios_vendor == NULL) && (def->bios_version == NULL) &&
+        (def->bios_date == NULL) && (def->bios_release == NULL))
+        return(NULL);
+
+    virBufferAddLit(&buf, "type=0");
+
+    /* 0:Vendor */
+    if (def->bios_vendor)
+        virBufferVSprintf(&buf, ",vendor=\"%s\"", def->bios_vendor);
+    /* 0:BIOS Version */
+    if (def->bios_version)
+        virBufferVSprintf(&buf, ",version=\"%s\"", def->bios_version);
+    /* 0:BIOS Release Date */
+    if (def->bios_date)
+        virBufferVSprintf(&buf, ",date=\"%s\"", def->bios_date);
+    /* 0:System BIOS Major Release and 0:System BIOS Minor Release */
+    if (def->bios_release)
+        virBufferVSprintf(&buf, ",release=\"%s\"", def->bios_release);
+
+    if (virBufferError(&buf)) {
+        virReportOOMError();
+        goto error;
+    }
+
+    return virBufferContentAndReset(&buf);
+
+error:
+    virBufferFreeAndReset(&buf);
+    return(NULL);
+}
+
+static char *qemuBuildSmbiosSystemStr(virSysinfoDefPtr def)
+{
+    virBuffer buf = VIR_BUFFER_INITIALIZER;
+
+    if ((def->system_manufacturer == NULL) && (def->system_sku == NULL) &&
+        (def->system_product == NULL) && (def->system_uuid == NULL) &&
+        (def->system_version == NULL) && (def->system_serial == NULL))
+        return(NULL);
+
+    virBufferAddLit(&buf, "type=1");
+
+    /* 1:Manufacturer */
+    if (def->system_manufacturer)
+        virBufferVSprintf(&buf, ",manufacturer=\"%s\"",
+                          def->system_manufacturer);
+     /* 1:Product Name */
+    if (def->system_product)
+        virBufferVSprintf(&buf, ",product=\"%s\"", def->system_product);
+    /* 1:Version */
+    if (def->system_version)
+        virBufferVSprintf(&buf, ",version=\"%s\"", def->system_version);
+    /* 1:Serial Number */
+    if (def->system_serial)
+        virBufferVSprintf(&buf, ",serial=\"%s\"", def->system_serial);
+    /* 1:UUID */
+    if (def->system_uuid)
+        virBufferVSprintf(&buf, ",uuid=\"%s\"", def->system_uuid);
+    /* 1:SKU Number */
+    if (def->system_sku)
+        virBufferVSprintf(&buf, ",sku=\"%s\"", def->system_sku);
+
+    if (virBufferError(&buf)) {
+        virReportOOMError();
+        goto error;
+    }
+
+    return virBufferContentAndReset(&buf);
+
+error:
+    virBufferFreeAndReset(&buf);
+    return(NULL);
+}
 
 static char *
 qemuBuildClockArgStr(virDomainClockDefPtr def)
@@ -4092,6 +4171,50 @@ int qemudBuildCommandLine(virConnectPtr conn,
         }
     }
 
+    if ((def->os.smbios_mode != VIR_DOMAIN_SMBIOS_NONE) &&
+        (def->os.smbios_mode != VIR_DOMAIN_SMBIOS_EMULATE)) {
+        virSysinfoDefPtr source = NULL;
+
+        if (!(qemuCmdFlags & QEMUD_CMD_FLAG_SMBIOS_TYPE)) {
+            qemuReportError(VIR_ERR_CONFIG_UNSUPPORTED,
+                    _("the QEMU binary %s does not support smbios settings"),
+                            emulator);
+            goto error;
+        }
+
+        /* should we really error out or just warn in those cases ? */
+        if (def->os.smbios_mode == VIR_DOMAIN_SMBIOS_HOST) {
+            if (driver->hostsysinfo == NULL) {
+                qemuReportError(VIR_ERR_CONFIG_UNSUPPORTED,
+                            _("Host SMBIOS information is not available"));
+                goto error;
+            }
+            source = driver->hostsysinfo;
+        } else if (def->os.smbios_mode == VIR_DOMAIN_SMBIOS_SYSINFO) {
+            if (def->sysinfo == NULL) {
+                qemuReportError(VIR_ERR_XML_ERROR,
+                            _("Domain '%s' sysinfo are not available"),
+                               def->name);
+                goto error;
+            }
+            source = def->sysinfo;
+        }
+        if (source != NULL) {
+            char *smbioscmd;
+
+            smbioscmd = qemuBuildSmbiosBiosStr(source);
+            if (smbioscmd != NULL) {
+                ADD_ARG_LIT("-smbios");
+                ADD_ARG(smbioscmd);
+            }
+            smbioscmd = qemuBuildSmbiosSystemStr(source);
+            if (smbioscmd != NULL) {
+                ADD_ARG_LIT("-smbios");
+                ADD_ARG(smbioscmd);
+            }
+        }
+    }
+
     /*
      * NB, -nographic *MUST* come before any serial, or monitor
      * or parallel port flags due to QEMU craziness, where it

src/qemu/qemu_conf.h

@@ -96,7 +96,8 @@ enum qemud_cmd_flags {
     QEMUD_CMD_FLAG_FSDEV         = (1LL << 40), /* -fstype filesystem passthrough */
     QEMUD_CMD_FLAG_NESTING       = (1LL << 41), /* -enable-nesting (SVM/VMX) */
     QEMUD_CMD_FLAG_NAME_PROCESS  = (1LL << 42), /* Is -name process= available */
-    QEMUD_CMD_FLAG_DRIVE_READONLY    = (1LL << 43), /* -drive readonly=on|off */
+    QEMUD_CMD_FLAG_DRIVE_READONLY= (1LL << 43), /* -drive readonly=on|off */
+    QEMUD_CMD_FLAG_SMBIOS_TYPE   = (1LL << 44), /* Is -smbios type= available */
 };
 
 /* Main driver state */

tests/qemuhelptest.c

@@ -152,7 +152,8 @@ mymain(int argc, char **argv)
             QEMUD_CMD_FLAG_NO_HPET |
             QEMUD_CMD_FLAG_NO_KVM_PIT |
             QEMUD_CMD_FLAG_TDF |
-            QEMUD_CMD_FLAG_DRIVE_READONLY,
+            QEMUD_CMD_FLAG_DRIVE_READONLY |
+            QEMUD_CMD_FLAG_SMBIOS_TYPE,
             9001, 1,  83);
     DO_TEST("qemu-0.10.5",
             QEMUD_CMD_FLAG_KQEMU |
@@ -220,7 +221,8 @@ mymain(int argc, char **argv)
             QEMUD_CMD_FLAG_NO_HPET |
             QEMUD_CMD_FLAG_NO_KVM_PIT |
             QEMUD_CMD_FLAG_TDF |
-            QEMUD_CMD_FLAG_NESTING,
+            QEMUD_CMD_FLAG_NESTING |
+            QEMUD_CMD_FLAG_SMBIOS_TYPE,
             10050, 1,  0);
     DO_TEST("qemu-kvm-0.11.0-rc2",
             QEMUD_CMD_FLAG_VNC_COLON |
@@ -249,7 +251,8 @@ mymain(int argc, char **argv)
             QEMUD_CMD_FLAG_TDF |
             QEMUD_CMD_FLAG_BOOT_MENU |
             QEMUD_CMD_FLAG_NESTING |
-            QEMUD_CMD_FLAG_NAME_PROCESS,
+            QEMUD_CMD_FLAG_NAME_PROCESS |
+            QEMUD_CMD_FLAG_SMBIOS_TYPE,
             10092, 1,  0);
     DO_TEST("qemu-0.12.1",
             QEMUD_CMD_FLAG_VNC_COLON |
@@ -276,7 +279,8 @@ mymain(int argc, char **argv)
             QEMUD_CMD_FLAG_RTC |
             QEMUD_CMD_FLAG_NO_HPET |
             QEMUD_CMD_FLAG_BOOT_MENU |
-            QEMUD_CMD_FLAG_NAME_PROCESS,
+            QEMUD_CMD_FLAG_NAME_PROCESS |
+            QEMUD_CMD_FLAG_SMBIOS_TYPE,
             12001, 0,  0);
     DO_TEST("qemu-kvm-0.12.3",
             QEMUD_CMD_FLAG_VNC_COLON |
@@ -310,7 +314,8 @@ mymain(int argc, char **argv)
             QEMUD_CMD_FLAG_TDF |
             QEMUD_CMD_FLAG_BOOT_MENU |
             QEMUD_CMD_FLAG_NESTING |
-            QEMUD_CMD_FLAG_NAME_PROCESS,
+            QEMUD_CMD_FLAG_NAME_PROCESS |
+            QEMUD_CMD_FLAG_SMBIOS_TYPE,
             12003, 1,  0);
 
     return ret == 0 ? EXIT_SUCCESS : EXIT_FAILURE;