[libvirt] [PATCH 2/3] Pass action to virDomainDefCompatibleDevice

[Jiri Denemark]

When checking compatibility of a device with a domain definition, we
should know what we're going to do with the device. Because we may need
to check for different things when we're attaching a new device versus
detaching an existing device.

Signed-off-by: Jiri Denemark <jdenemar at redhat.com>
---
 src/conf/domain_conf.c |  6 +++++-
 src/conf/domain_conf.h |  9 ++++++++-
 src/lxc/lxc_driver.c   | 18 ++++++++++++------
 src/qemu/qemu_driver.c | 18 ++++++++++++------
 4 files changed, 37 insertions(+), 14 deletions(-)

diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c
index 89aa52c..ecfec0d 100644
--- a/src/conf/domain_conf.c
+++ b/src/conf/domain_conf.c
@@ -17825,8 +17825,12 @@ virDomainDeviceIsUSB(virDomainDeviceDefPtr dev)
 
 int
 virDomainDefCompatibleDevice(virDomainDefPtr def,
-                             virDomainDeviceDefPtr dev)
+                             virDomainDeviceDefPtr dev,
+                             virDomainDeviceAction action)
 {
+    if (action != VIR_DOMAIN_DEVICE_ACTION_ATTACH)
+        return 0;
+
     if (!virDomainDefHasUSB(def) &&
         STRNEQ(def->os.type, "exe") &&
         virDomainDeviceIsUSB(dev)) {
diff --git a/src/conf/domain_conf.h b/src/conf/domain_conf.h
index 27f07e6..d5d5fd3 100644
--- a/src/conf/domain_conf.h
+++ b/src/conf/domain_conf.h
@@ -2407,8 +2407,15 @@ int virDomainNetDefFormat(virBufferPtr buf,
                           virDomainNetDefPtr def,
                           unsigned int flags);
 
+typedef enum {
+    VIR_DOMAIN_DEVICE_ACTION_ATTACH,
+    VIR_DOMAIN_DEVICE_ACTION_DETACH,
+    VIR_DOMAIN_DEVICE_ACTION_UPDATE,
+} virDomainDeviceAction;
+
 int virDomainDefCompatibleDevice(virDomainDefPtr def,
-                                 virDomainDeviceDefPtr dev);
+                                 virDomainDeviceDefPtr dev,
+                                 virDomainDeviceAction action);
 
 int virDomainVcpuPinAdd(virDomainVcpuPinDefPtr **vcpupin_list,
                         size_t *nvcpupin,
diff --git a/src/lxc/lxc_driver.c b/src/lxc/lxc_driver.c
index ca82fd2..109132e 100644
--- a/src/lxc/lxc_driver.c
+++ b/src/lxc/lxc_driver.c
@@ -5020,7 +5020,8 @@ static int lxcDomainAttachDeviceFlags(virDomainPtr dom,
         if (!vmdef)
             goto cleanup;
 
-        if (virDomainDefCompatibleDevice(vmdef, dev) < 0)
+        if (virDomainDefCompatibleDevice(vmdef, dev,
+                                         VIR_DOMAIN_DEVICE_ACTION_ATTACH) < 0)
             goto cleanup;
 
         if ((ret = lxcDomainAttachDeviceConfig(vmdef, dev)) < 0)
@@ -5028,7 +5029,8 @@ static int lxcDomainAttachDeviceFlags(virDomainPtr dom,
     }
 
     if (flags & VIR_DOMAIN_AFFECT_LIVE) {
-        if (virDomainDefCompatibleDevice(vm->def, dev_copy) < 0)
+        if (virDomainDefCompatibleDevice(vm->def, dev_copy,
+                                         VIR_DOMAIN_DEVICE_ACTION_ATTACH) < 0)
             goto cleanup;
 
         if ((ret = lxcDomainAttachDeviceLive(dom->conn, driver, vm, dev_copy)) < 0)
@@ -5147,7 +5149,8 @@ static int lxcDomainUpdateDeviceFlags(virDomainPtr dom,
         if (!vmdef)
             goto cleanup;
 
-        if (virDomainDefCompatibleDevice(vmdef, dev) < 0)
+        if (virDomainDefCompatibleDevice(vmdef, dev,
+                                         VIR_DOMAIN_DEVICE_ACTION_UPDATE) < 0)
             goto cleanup;
 
         if ((ret = lxcDomainUpdateDeviceConfig(vmdef, dev)) < 0)
@@ -5155,7 +5158,8 @@ static int lxcDomainUpdateDeviceFlags(virDomainPtr dom,
     }
 
     if (flags & VIR_DOMAIN_AFFECT_LIVE) {
-        if (virDomainDefCompatibleDevice(vm->def, dev_copy) < 0)
+        if (virDomainDefCompatibleDevice(vm->def, dev_copy,
+                                         VIR_DOMAIN_DEVICE_ACTION_UPDATE) < 0)
             goto cleanup;
 
         virReportError(VIR_ERR_OPERATION_UNSUPPORTED, "%s",
@@ -5258,7 +5262,8 @@ static int lxcDomainDetachDeviceFlags(virDomainPtr dom,
         if (!vmdef)
             goto cleanup;
 
-        if (virDomainDefCompatibleDevice(vmdef, dev) < 0)
+        if (virDomainDefCompatibleDevice(vmdef, dev,
+                                         VIR_DOMAIN_DEVICE_ACTION_DETACH) < 0)
             goto cleanup;
 
         if ((ret = lxcDomainDetachDeviceConfig(vmdef, dev)) < 0)
@@ -5266,7 +5271,8 @@ static int lxcDomainDetachDeviceFlags(virDomainPtr dom,
     }
 
     if (flags & VIR_DOMAIN_AFFECT_LIVE) {
-        if (virDomainDefCompatibleDevice(vm->def, dev_copy) < 0)
+        if (virDomainDefCompatibleDevice(vm->def, dev_copy,
+                                         VIR_DOMAIN_DEVICE_ACTION_DETACH) < 0)
             goto cleanup;
 
         if ((ret = lxcDomainDetachDeviceLive(driver, vm, dev_copy)) < 0)
diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c
index 8ec8912..dec216c 100644
--- a/src/qemu/qemu_driver.c
+++ b/src/qemu/qemu_driver.c
@@ -6951,7 +6951,8 @@ static int qemuDomainAttachDeviceFlags(virDomainPtr dom, const char *xml,
         if (!vmdef)
             goto endjob;
 
-        if (virDomainDefCompatibleDevice(vmdef, dev) < 0)
+        if (virDomainDefCompatibleDevice(vmdef, dev,
+                                         VIR_DOMAIN_DEVICE_ACTION_ATTACH) < 0)
             goto endjob;
 
         if ((ret = qemuDomainAttachDeviceConfig(qemuCaps, vmdef, dev)) < 0)
@@ -6959,7 +6960,8 @@ static int qemuDomainAttachDeviceFlags(virDomainPtr dom, const char *xml,
     }
 
     if (flags & VIR_DOMAIN_AFFECT_LIVE) {
-        if (virDomainDefCompatibleDevice(vm->def, dev_copy) < 0)
+        if (virDomainDefCompatibleDevice(vm->def, dev_copy,
+                                         VIR_DOMAIN_DEVICE_ACTION_ATTACH) < 0)
             goto endjob;
 
         if ((ret = qemuDomainAttachDeviceLive(vm, dev_copy, dom)) < 0)
@@ -7095,7 +7097,8 @@ static int qemuDomainUpdateDeviceFlags(virDomainPtr dom,
         if (!vmdef)
             goto endjob;
 
-        if (virDomainDefCompatibleDevice(vmdef, dev) < 0)
+        if (virDomainDefCompatibleDevice(vmdef, dev,
+                                         VIR_DOMAIN_DEVICE_ACTION_UPDATE) < 0)
             goto endjob;
 
         if ((ret = qemuDomainUpdateDeviceConfig(qemuCaps, vmdef, dev)) < 0)
@@ -7103,7 +7106,8 @@ static int qemuDomainUpdateDeviceFlags(virDomainPtr dom,
     }
 
     if (flags & VIR_DOMAIN_AFFECT_LIVE) {
-        if (virDomainDefCompatibleDevice(vm->def, dev_copy) < 0)
+        if (virDomainDefCompatibleDevice(vm->def, dev_copy,
+                                         VIR_DOMAIN_DEVICE_ACTION_UPDATE) < 0)
             goto endjob;
 
         if ((ret = qemuDomainUpdateDeviceLive(dom->conn, vm, dev_copy, dom, force)) < 0)
@@ -7234,7 +7238,8 @@ static int qemuDomainDetachDeviceFlags(virDomainPtr dom, const char *xml,
         if (!vmdef)
             goto endjob;
 
-        if (virDomainDefCompatibleDevice(vmdef, dev) < 0)
+        if (virDomainDefCompatibleDevice(vmdef, dev,
+                                         VIR_DOMAIN_DEVICE_ACTION_DETACH) < 0)
             goto endjob;
 
         if ((ret = qemuDomainDetachDeviceConfig(vmdef, dev)) < 0)
@@ -7242,7 +7247,8 @@ static int qemuDomainDetachDeviceFlags(virDomainPtr dom, const char *xml,
     }
 
     if (flags & VIR_DOMAIN_AFFECT_LIVE) {
-        if (virDomainDefCompatibleDevice(vm->def, dev_copy) < 0)
+        if (virDomainDefCompatibleDevice(vm->def, dev_copy,
+                                         VIR_DOMAIN_DEVICE_ACTION_DETACH) < 0)
             goto endjob;
 
         if ((ret = qemuDomainDetachDeviceLive(vm, dev_copy, dom)) < 0)
-- 
1.9.1