[libvirt] [PATCH v2 01/10] conf: Introduce readonly to hostdev and change helper function

[Han Cheng]

The only parameter in -drive affect scsi-generic is readonly. Introduce
<readonly/> to <hostdev>.
The helper function to look up disk controller model may be used by scsi
hostdev. But it should be changed to use info.

Signed-off-by: Han Cheng <hanc.fnst at cn.fujitsu.com>
---
 docs/formatdomain.html.in     |    3 +++
 docs/schemas/domaincommon.rng |    5 +++++
 src/conf/domain_conf.c        |    6 +++---
 src/conf/domain_conf.h        |    6 ++++--
 src/libvirt_private.syms      |    2 +-
 src/qemu/qemu_command.c       |    4 ++--
 6 files changed, 18 insertions(+), 8 deletions(-)

diff --git a/docs/formatdomain.html.in b/docs/formatdomain.html.in
index cf382e8..a6bacfa 100644
--- a/docs/formatdomain.html.in
+++ b/docs/formatdomain.html.in
@@ -2257,6 +2257,9 @@
       <code>id</code> attribute that specifies the USB vendor and product id.
       The ids can be given in decimal, hexadecimal (starting with 0x) or
       octal (starting with 0) form.</dd>
+      <dt><code>readonly</code></dt>
+      <dd>Specifies that the device is readonly.
+      <span class="since">Since 0.13.0</span> for SCSI devices.</dd>
       <dt><code>boot</code></dt>
       <dd>Specifies that the device is bootable. The <code>order</code>
       attribute determines the order in which devices will be tried during
diff --git a/docs/schemas/domaincommon.rng b/docs/schemas/domaincommon.rng
index 8d7e6db..ccf0913 100644
--- a/docs/schemas/domaincommon.rng
+++ b/docs/schemas/domaincommon.rng
@@ -2911,6 +2911,11 @@
         <ref name="alias"/>
       </optional>
       <optional>
+        <element name='readonly'>
+          <empty/>
+        </element>
+      </optional>
+      <optional>
         <ref name="deviceBoot"/>
       </optional>
       <optional>
diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c
index f3fca7f..d9d6b9f 100644
--- a/src/conf/domain_conf.c
+++ b/src/conf/domain_conf.c
@@ -3452,8 +3452,8 @@ error:
 }
 
 int
-virDomainDiskFindControllerModel(virDomainDefPtr def,
-                                 virDomainDiskDefPtr disk,
+virDomainDeviceFindControllerModel(virDomainDefPtr def,
+                                 virDomainDeviceInfoPtr info,
                                  int controllerType)
 {
     int model = -1;
@@ -3461,7 +3461,7 @@ virDomainDiskFindControllerModel(virDomainDefPtr def,
 
     for (i = 0; i < def->ncontrollers; i++) {
         if (def->controllers[i]->type == controllerType &&
-            def->controllers[i]->idx == disk->info.addr.drive.controller)
+            def->controllers[i]->idx == info->addr.drive.controller)
             model = def->controllers[i]->model;
     }
 
diff --git a/src/conf/domain_conf.h b/src/conf/domain_conf.h
index edddf25..f8e3973 100644
--- a/src/conf/domain_conf.h
+++ b/src/conf/domain_conf.h
@@ -439,6 +439,8 @@ struct _virDomainHostdevDef {
     } source;
     virDomainHostdevOrigStates origstates;
     virDomainDeviceInfoPtr info; /* Guest address */
+    /* readonly is only used for scsi hostdev */
+    unsigned int readonly;
 };
 
 /* Two types of disk backends */
@@ -1981,8 +1983,8 @@ void virDomainInputDefFree(virDomainInputDefPtr def);
 void virDomainDiskDefFree(virDomainDiskDefPtr def);
 void virDomainLeaseDefFree(virDomainLeaseDefPtr def);
 void virDomainDiskHostDefFree(virDomainDiskHostDefPtr def);
-int virDomainDiskFindControllerModel(virDomainDefPtr def,
-                                     virDomainDiskDefPtr disk,
+int virDomainDeviceFindControllerModel(virDomainDefPtr def,
+                                     virDomainDeviceInfoPtr info,
                                      int controllerType);
 virDomainDiskDefPtr virDomainDiskFindByBusAndDst(virDomainDefPtr def,
                                                  int bus,
diff --git a/src/libvirt_private.syms b/src/libvirt_private.syms
index 96eea0a..f2eefc3 100644
--- a/src/libvirt_private.syms
+++ b/src/libvirt_private.syms
@@ -128,6 +128,7 @@ virDomainDeviceAddressTypeToString;
 virDomainDeviceDefCopy;
 virDomainDeviceDefFree;
 virDomainDeviceDefParse;
+virDomainDeviceFindControllerModel;
 virDomainDeviceInfoCopy;
 virDomainDeviceInfoIterate;
 virDomainDeviceTypeToString;
@@ -145,7 +146,6 @@ virDomainDiskDeviceTypeToString;
 virDomainDiskErrorPolicyTypeFromString;
 virDomainDiskErrorPolicyTypeToString;
 virDomainDiskFindByBusAndDst;
-virDomainDiskFindControllerModel;
 virDomainDiskGeometryTransTypeFromString;
 virDomainDiskGeometryTransTypeToString;
 virDomainDiskHostDefFree;
diff --git a/src/qemu/qemu_command.c b/src/qemu/qemu_command.c
index a0c278f..eac72c2 100644
--- a/src/qemu/qemu_command.c
+++ b/src/qemu/qemu_command.c
@@ -557,7 +557,7 @@ qemuAssignDeviceDiskAliasCustom(virDomainDefPtr def,
     if (disk->info.type == VIR_DOMAIN_DEVICE_ADDRESS_TYPE_DRIVE) {
         if (disk->bus == VIR_DOMAIN_DISK_BUS_SCSI) {
             controllerModel =
-                virDomainDiskFindControllerModel(def, disk,
+                virDomainInfoFindControllerModel(def, &disk->info,
                                                  VIR_DOMAIN_CONTROLLER_TYPE_SCSI);
 
             if ((qemuSetScsiControllerModel(def, qemuCaps, &controllerModel)) < 0)
@@ -3179,7 +3179,7 @@ qemuBuildDriveDevStr(virDomainDefPtr def,
         }
 
         controllerModel =
-            virDomainDiskFindControllerModel(def, disk,
+            virDomainInfoFindControllerModel(def, &disk->info,
                                              VIR_DOMAIN_CONTROLLER_TYPE_SCSI);
         if ((qemuSetScsiControllerModel(def, qemuCaps, &controllerModel)) < 0)
             goto error;
-- 
1.7.1