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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [win-pv-devel] [PATCH 7/7] Remove generic store accessors in frontend
From: Owen Smith <owen.smith@xxxxxxxxxx>
Replace with specific use functions.
Signed-off-by: Owen Smith <owen.smith@xxxxxxxxxx>
---
src/xenvbd/frontend.c | 153 ++++++++++++++++++++------------------------------
src/xenvbd/frontend.h | 30 ++++------
src/xenvbd/target.c | 35 ++----------
3 files changed, 78 insertions(+), 140 deletions(-)
diff --git a/src/xenvbd/frontend.c b/src/xenvbd/frontend.c
index 42eaa0b..9b0c86a 100644
--- a/src/xenvbd/frontend.c
+++ b/src/xenvbd/frontend.c
@@ -183,103 +183,69 @@ FrontendGetInquiryOverride(
}
}
-NTSTATUS
-FrontendStoreWriteFrontend(
- __in PXENVBD_FRONTEND Frontend,
- __in PCHAR Name,
- __in PCHAR Value
+VOID
+FrontendSetEjected(
+ IN PXENVBD_FRONTEND Frontend
)
{
- return XENBUS_STORE(Printf,
+ (VOID) XENBUS_STORE(Printf,
&Frontend->StoreInterface,
NULL,
Frontend->FrontendPath,
- Name,
- Value);
+ "ejected",
+ "1");
}
-NTSTATUS
-FrontendStoreReadBackend(
- __in PXENVBD_FRONTEND Frontend,
- __in PCHAR Name,
- __out PCHAR* Value
- )
-{
- NTSTATUS Status;
-
- Status = STATUS_INVALID_PARAMETER;
- if (Frontend->BackendPath == NULL)
- goto fail1;
-
- Status = XENBUS_STORE(Read,
- &Frontend->StoreInterface,
- NULL,
- Frontend->BackendPath,
- Name,
- Value);
- if (!NT_SUCCESS(Status))
- goto fail2;
- return STATUS_SUCCESS;
-
-fail2:
-fail1:
- return Status;
-}
VOID
-FrontendStoreFree(
- __in PXENVBD_FRONTEND Frontend,
- __in PCHAR Value
+FrontendSetEjectFailed(
+ IN PXENVBD_FRONTEND Frontend
)
{
- XENBUS_STORE(Free,
- &Frontend->StoreInterface,
- Value);
+ (VOID) XENBUS_STORE(Printf,
+ &Frontend->StoreInterface,
+ NULL,
+ Frontend->FrontendPath,
+ "error",
+ "Unplug failed due to open handle(s)!");
}
-__drv_maxIRQL(DISPATCH_LEVEL)
-NTSTATUS
-FrontendWriteUsage(
- __in PXENVBD_FRONTEND Frontend
+
+VOID
+FrontendSetDeviceUsage(
+ IN PXENVBD_FRONTEND Frontend,
+ IN DEVICE_USAGE_NOTIFICATION_TYPE Type,
+ IN BOOLEAN Value
)
{
- NTSTATUS Status;
+ PCHAR UsageName;
- Status = XENBUS_STORE(Printf,
- &Frontend->StoreInterface,
- NULL,
- Frontend->TargetPath,
- "paging",
- "%u",
- Frontend->Caps.Paging);
- if (!NT_SUCCESS(Status))
- goto out;
-
- Status = XENBUS_STORE(Printf,
- &Frontend->StoreInterface,
- NULL,
- Frontend->TargetPath,
- "hibernation",
- "%u",
- Frontend->Caps.Hibernation);
- if (!NT_SUCCESS(Status))
- goto out;
-
- Status = XENBUS_STORE(Printf,
- &Frontend->StoreInterface,
- NULL,
- Frontend->TargetPath,
- "dump",
- "%u",
- Frontend->Caps.DumpFile);
- if (!NT_SUCCESS(Status))
- goto out;
+ switch (Type) {
+ case DeviceUsageTypePaging:
+ UsageName = "paging";
+ Frontend->Caps.Paging = Value;
+ break;
+ case DeviceUsageTypeHibernation:
+ UsageName = "hibernation";
+ Frontend->Caps.Hibernation = Value;
+ break;
+ case DeviceUsageTypeDumpFile:
+ UsageName = "dump";
+ Frontend->Caps.DumpFile = Value;
+ break;
+ default:
+ return;
+ }
- Verbose("Target[%d] : %s %s %s\n", Frontend->TargetId,
- Frontend->Caps.DumpFile ? "DUMP" : "NOT_DUMP",
- Frontend->Caps.Hibernation ? "HIBER" : "NOT_HIBER",
- Frontend->Caps.Paging ? "PAGE" : "NOT_PAGE");
+ (VOID) XENBUS_STORE(Printf,
+ &Frontend->StoreInterface,
+ NULL,
+ Frontend->TargetPath,
+ UsageName,
+ "%u",
+ Value);
-out:
- return Status;
+ Verbose("Target[%u] %s %s\n",
+ Value ? "ADDING" : "REMOVING",
+ UsageName);
}
//=============================================================================
@@ -1037,10 +1003,15 @@ FrontendPrepare(
if (!NT_SUCCESS(Status))
goto fail2;
- // write targetpath
- Status = FrontendWriteUsage(Frontend);
- if (!NT_SUCCESS(Status))
- goto fail3;
+ FrontendSetDeviceUsage(Frontend,
+ DeviceUsageTypePaging,
+ Frontend->Caps.Paging);
+ FrontendSetDeviceUsage(Frontend,
+ DeviceUsageTypeHibernation,
+ Frontend->Caps.Hibernation);
+ FrontendSetDeviceUsage(Frontend,
+ DeviceUsageTypeDumpFile,
+ Frontend->Caps.DumpFile);
Status = XENBUS_STORE(Printf,
&Frontend->StoreInterface,
@@ -1050,7 +1021,7 @@ FrontendPrepare(
"%s",
Frontend->FrontendPath);
if (!NT_SUCCESS(Status))
- goto fail4;
+ goto fail3;
Status = XENBUS_STORE(Printf,
&Frontend->StoreInterface,
@@ -1060,24 +1031,24 @@ FrontendPrepare(
"%u",
Frontend->DeviceId);
if (!NT_SUCCESS(Status))
- goto fail5;
+ goto fail4;
// Frontend: -> INITIALIZING
Status = ___SetState(Frontend, XenbusStateInitialising);
if (!NT_SUCCESS(Status))
- goto fail6;
+ goto fail5;
// Backend : -> INITWAIT
BackendState = XenbusStateUnknown;
do {
Status = __WaitState(Frontend, &BackendState);
if (!NT_SUCCESS(Status))
- goto fail7;
+ goto fail6;
} while (BackendState == XenbusStateClosed ||
BackendState == XenbusStateInitialising);
Status = STATUS_UNSUCCESSFUL;
if (BackendState != XenbusStateInitWait)
- goto fail8;
+ goto fail7;
// read features and caps (removable, ring-order, ...)
Verbose("Target[%d] : BackendId %d (%s)\n",
@@ -1089,8 +1060,6 @@ FrontendPrepare(
return STATUS_SUCCESS;
-fail8:
- Error("Fail8\n");
fail7:
Error("Fail7\n");
fail6:
diff --git a/src/xenvbd/frontend.h b/src/xenvbd/frontend.h
index 0931914..46f2e39 100644
--- a/src/xenvbd/frontend.h
+++ b/src/xenvbd/frontend.h
@@ -88,27 +88,21 @@ FrontendGetInquiryOverride(
OUT PULONG Length
);
-extern NTSTATUS
-FrontendStoreWriteFrontend(
- __in PXENVBD_FRONTEND Frontend,
- __in PCHAR Name,
- __in PCHAR Value
+extern VOID
+FrontendSetEjected(
+ IN PXENVBD_FRONTEND Frontend
);
-extern NTSTATUS
-FrontendStoreReadBackend(
- __in PXENVBD_FRONTEND Frontend,
- __in PCHAR Name,
- __out PCHAR* Value
+
+extern VOID
+FrontendSetEjectFailed(
+ IN PXENVBD_FRONTEND Frontend
);
+
extern VOID
-FrontendStoreFree(
- __in PXENVBD_FRONTEND Frontend,
- __in PCHAR Value
- );
-__drv_maxIRQL(DISPATCH_LEVEL)
-extern NTSTATUS
-FrontendWriteUsage(
- __in PXENVBD_FRONTEND Frontend
+FrontendSetDeviceUsage(
+ IN PXENVBD_FRONTEND Frontend,
+ IN DEVICE_USAGE_NOTIFICATION_TYPE Type,
+ IN BOOLEAN Value
);
__checkReturn
diff --git a/src/xenvbd/target.c b/src/xenvbd/target.c
index cecfcf5..fd8621d 100644
--- a/src/xenvbd/target.c
+++ b/src/xenvbd/target.c
@@ -957,9 +957,7 @@ TargetIssueDeviceEject(
Reason);
if (!Target->WrittenEjected) {
Target->WrittenEjected = TRUE;
- FrontendStoreWriteFrontend(Target->Frontend,
- "ejected",
- "1");
+ FrontendSetEjected(Target->Frontend);
}
if (DoEject) {
Verbose("Target[%d] : IoRequestDeviceEject(0x%p)\n",
@@ -982,35 +980,14 @@ __TargetDeviceUsageNotification(
PIO_STACK_LOCATION StackLocation;
BOOLEAN Value;
DEVICE_USAGE_NOTIFICATION_TYPE Type;
- PXENVBD_CAPS Caps = FrontendGetCaps(Target->Frontend);
StackLocation = IoGetCurrentIrpStackLocation(Irp);
Value = StackLocation->Parameters.UsageNotification.InPath;
Type = StackLocation->Parameters.UsageNotification.Type;
- switch (Type) {
- case DeviceUsageTypePaging:
- if (Caps->Paging == Value)
- return;
- Caps->Paging = Value;
- break;
-
- case DeviceUsageTypeHibernation:
- if (Caps->Hibernation == Value)
- return;
- Caps->Hibernation = Value;
- break;
-
- case DeviceUsageTypeDumpFile:
- if (Caps->DumpFile == Value)
- return;
- Caps->DumpFile = Value;
- break;
-
- default:
- return;
- }
- FrontendWriteUsage(Target->Frontend);
+ FrontendSetDeviceUsage(Target->Frontend,
+ Type,
+ Value);
}
static FORCEINLINE VOID
@@ -1055,9 +1032,7 @@ __TargetCheckEjectFailed(
if (EjectFailed) {
Error("Target[%d] : Unplug failed due to open handle(s)!\n",
TargetGetTargetId(Target));
- FrontendStoreWriteFrontend(Target->Frontend,
- "error",
- "Unplug failed due to open handle(s)!");
+ FrontendSetEjectFailed(Target->Frontend);
}
}
--
2.8.3
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