qemu: Add support for reboot-timeout

This patch adds support for "-boot reboot-timeout=rb_time" that is
added in QEMU.

src/qemu/qemu_capabilities.c

@@ -180,6 +180,8 @@ VIR_ENUM_IMPL(qemuCaps, QEMU_CAPS_LAST,
               "ide-drive.wwn",
               "scsi-disk.wwn",
               "seccomp-sandbox",
+
+              "reboot-timeout", /* 110 */
     );
 
 struct _qemuCaps {
@@ -1191,6 +1193,8 @@ qemuCapsComputeCmdFlags(const char *help,
         qemuCapsSet(caps, QEMU_CAPS_NESTING);
     if (strstr(help, ",menu=on"))
         qemuCapsSet(caps, QEMU_CAPS_BOOT_MENU);
+    if (strstr(help, ",reboot-timeout=rb_time"))
+        qemuCapsSet(caps, QEMU_CAPS_REBOOT_TIMEOUT);
     if ((fsdev = strstr(help, "-fsdev"))) {
         qemuCapsSet(caps, QEMU_CAPS_FSDEV);
         if (strstr(fsdev, "readonly"))

src/qemu/qemu_capabilities.h

@@ -145,6 +145,7 @@ enum qemuCapsFlags {
     QEMU_CAPS_IDE_DRIVE_WWN      = 107, /* Is ide-drive.wwn available? */
     QEMU_CAPS_SCSI_DISK_WWN      = 108, /* Is scsi-disk.wwn available? */
     QEMU_CAPS_SECCOMP_SANDBOX    = 109, /* -sandbox */
+    QEMU_CAPS_REBOOT_TIMEOUT     = 110, /* -boot reboot-timeout */
 
     QEMU_CAPS_LAST,                   /* this must always be the last item */
 };

src/qemu/qemu_command.c

@@ -4945,7 +4945,22 @@ qemuBuildCommandLine(virConnectPtr conn,
                 VIR_WARN("bootmenu is enabled but not "
                          "supported by this QEMU binary");
             }
+        }
 
+        if (def->os.bios.rt_set) {
+            if (!qemuCapsGet(caps, QEMU_CAPS_REBOOT_TIMEOUT)) {
+                virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
+                               _("reboot timeout is not supported "
+                                 "by this QEMU binary"));
+                goto error;
+            }
+
+            if (boot_nparams++)
+                virBufferAddChar(&boot_buf, ',');
+
+            virBufferAsprintf(&boot_buf,
+                              "reboot-timeout=%d",
+                              def->os.bios.rt_delay);
         }
 
         if (boot_nparams > 0) {
@@ -8271,6 +8286,22 @@ virDomainDefPtr qemuParseCommandLine(virCapsPtr caps,
                         qemuParseCommandLineBootDevs(def, token);
                     } else if (STRPREFIX(token, "menu=on")) {
                         def->os.bootmenu = 1;
+                    } else if (STRPREFIX(token, "reboot-timeout=")) {
+                        int num;
+                        char *endptr;
+                        if (virStrToLong_i(token + strlen("reboot-timeout="),
+                                           &endptr, 10, &num) < 0 ||
+                            (*endptr != '\0' && endptr != strchr(token, ','))) {
+                            virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
+                                           _("cannot parse reboot-timeout value"));
+                            goto error;
+                        }
+                        if (num > 65535)
+                            num = 65535;
+                        else if (num < -1)
+                            num = -1;
+                        def->os.bios.rt_delay = num;
+                        def->os.bios.rt_set = true;
                     }
                     token = strchr(token, ',');
                     /* This incrementation has to be done here in order to make it