Revision: 17610
http://sourceforge.net/p/edk2/code/17610
Author: lzeng14
Date: 2015-06-10 07:52:12 +0000 (Wed, 10 Jun 2015)
Log Message:
-----------
SecurityPkg Variable: Support the new introduced PcdMaxAuthVariableSize.
1. If PcdMaxAuthVariableSize is set to 0, keep current behavior as is and
PcdMaxVariableSize used.
2. If PcdMaxAuthVariableSize is set to non 0, it will work on
authenticated variables.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Star Zeng <[email protected]>
Reviewed-by: Jiewen Yao <[email protected]>
Modified Paths:
--------------
trunk/edk2/SecurityPkg/VariableAuthenticated/RuntimeDxe/AuthService.c
trunk/edk2/SecurityPkg/VariableAuthenticated/RuntimeDxe/AuthService.h
trunk/edk2/SecurityPkg/VariableAuthenticated/RuntimeDxe/Variable.c
trunk/edk2/SecurityPkg/VariableAuthenticated/RuntimeDxe/Variable.h
trunk/edk2/SecurityPkg/VariableAuthenticated/RuntimeDxe/VariableRuntimeDxe.inf
trunk/edk2/SecurityPkg/VariableAuthenticated/RuntimeDxe/VariableSmm.c
trunk/edk2/SecurityPkg/VariableAuthenticated/RuntimeDxe/VariableSmm.inf
trunk/edk2/SecurityPkg/VariableAuthenticated/RuntimeDxe/VariableSmmRuntimeDxe.c
trunk/edk2/SecurityPkg/VariableAuthenticated/RuntimeDxe/VariableSmmRuntimeDxe.inf
Modified: trunk/edk2/SecurityPkg/VariableAuthenticated/RuntimeDxe/AuthService.c
===================================================================
--- trunk/edk2/SecurityPkg/VariableAuthenticated/RuntimeDxe/AuthService.c
2015-06-10 07:51:16 UTC (rev 17609)
+++ trunk/edk2/SecurityPkg/VariableAuthenticated/RuntimeDxe/AuthService.c
2015-06-10 07:52:12 UTC (rev 17610)
@@ -124,13 +124,18 @@
/**
Initializes for authenticated varibale service.
+ @param[in] MaxAuthVariableSize Reflect the overhead associated with the
saving
+ of a single EFI authenticated variable
with the exception
+ of the overhead associated with the length
+ of the string name of the EFI variable.
+
@retval EFI_SUCCESS Function successfully executed.
@retval EFI_OUT_OF_RESOURCES Fail to allocate enough memory resources.
**/
EFI_STATUS
AutenticatedVariableServiceInitialize (
- VOID
+ IN UINTN MaxAuthVariableSize
)
{
EFI_STATUS Status;
@@ -158,7 +163,7 @@
//
// Reserve runtime buffer for public key database. The size excludes
variable header and name size.
//
- mMaxKeyDbSize = PcdGet32 (PcdMaxVariableSize) - sizeof (VARIABLE_HEADER) -
sizeof (AUTHVAR_KEYDB_NAME);
+ mMaxKeyDbSize = (UINT32) (MaxAuthVariableSize - sizeof (AUTHVAR_KEYDB_NAME));
mMaxKeyNumber = mMaxKeyDbSize / EFI_CERT_TYPE_RSA2048_SIZE;
mPubKeyStore = AllocateRuntimePool (mMaxKeyDbSize);
if (mPubKeyStore == NULL) {
@@ -168,7 +173,7 @@
//
// Reserve runtime buffer for certificate database. The size excludes
variable header and name size.
//
- mMaxCertDbSize = PcdGet32 (PcdMaxVariableSize) - sizeof (VARIABLE_HEADER) -
sizeof (EFI_CERT_DB_NAME);
+ mMaxCertDbSize = (UINT32) (MaxAuthVariableSize - sizeof (EFI_CERT_DB_NAME));
mCertDbStore = AllocateRuntimePool (mMaxCertDbSize);
if (mCertDbStore == NULL) {
return EFI_OUT_OF_RESOURCES;
Modified: trunk/edk2/SecurityPkg/VariableAuthenticated/RuntimeDxe/AuthService.h
===================================================================
--- trunk/edk2/SecurityPkg/VariableAuthenticated/RuntimeDxe/AuthService.h
2015-06-10 07:51:16 UTC (rev 17609)
+++ trunk/edk2/SecurityPkg/VariableAuthenticated/RuntimeDxe/AuthService.h
2015-06-10 07:52:12 UTC (rev 17610)
@@ -139,13 +139,18 @@
/**
Initializes for authenticated varibale service.
+ @param[in] MaxAuthVariableSize Reflect the overhead associated with the
saving
+ of a single EFI authenticated variable
with the exception
+ of the overhead associated with the length
+ of the string name of the EFI variable.
+
@retval EFI_SUCCESS Function successfully executed.
- @retval EFI_OUT_OF_RESOURCES Fail to allocate enough memory resource.
+ @retval EFI_OUT_OF_RESOURCES Fail to allocate enough memory resources.
**/
EFI_STATUS
AutenticatedVariableServiceInitialize (
- VOID
+ IN UINTN MaxAuthVariableSize
);
/**
Modified: trunk/edk2/SecurityPkg/VariableAuthenticated/RuntimeDxe/Variable.c
===================================================================
--- trunk/edk2/SecurityPkg/VariableAuthenticated/RuntimeDxe/Variable.c
2015-06-10 07:51:16 UTC (rev 17609)
+++ trunk/edk2/SecurityPkg/VariableAuthenticated/RuntimeDxe/Variable.c
2015-06-10 07:52:12 UTC (rev 17610)
@@ -2153,7 +2153,7 @@
// Trying to update NV variable prior to the installation of
EFI_VARIABLE_WRITE_ARCH_PROTOCOL
//
return EFI_NOT_AVAILABLE_YET;
- } else if ((Attributes & EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS) != 0) {
+ } else if ((Attributes & VARIABLE_ATTRIBUTE_AT_AW) != 0) {
//
// Trying to update volatile authenticated variable prior to the
installation of EFI_VARIABLE_WRITE_ARCH_PROTOCOL
// The authenticated variable perhaps is not initialized, just return
here.
@@ -2190,7 +2190,7 @@
// as a temporary storage.
//
NextVariable = GetEndPointer ((VARIABLE_STORE_HEADER *) ((UINTN)
mVariableModuleGlobal->VariableGlobal.VolatileVariableBase));
- ScratchSize = MAX (PcdGet32 (PcdMaxVariableSize), PcdGet32
(PcdMaxHardwareErrorVariableSize));
+ ScratchSize = mVariableModuleGlobal->ScratchBufferSize;
SetMem (NextVariable, ScratchSize, 0xff);
DataReady = FALSE;
@@ -2309,9 +2309,13 @@
CopyMem (BufferForMerge, (UINT8 *) ((UINTN) Variable->CurrPtr +
DataOffset), Variable->CurrPtr->DataSize);
//
- // Set Max Common Variable Data Size as default MaxDataSize
+ // Set Max Common/Auth Variable Data Size as default MaxDataSize
//
- MaxDataSize = PcdGet32 (PcdMaxVariableSize) - DataOffset;
+ if ((Attributes & VARIABLE_ATTRIBUTE_AT_AW) != 0) {
+ MaxDataSize = mVariableModuleGlobal->MaxAuthVariableSize -
DataOffset;
+ } else {
+ MaxDataSize = mVariableModuleGlobal->MaxVariableSize - DataOffset;
+ }
if ((CompareGuid (VendorGuid, &gEfiImageSecurityDatabaseGuid) &&
((StrCmp (VariableName, EFI_IMAGE_SECURITY_DATABASE) == 0) ||
(StrCmp (VariableName, EFI_IMAGE_SECURITY_DATABASE1) == 0) ||
@@ -2351,7 +2355,7 @@
} else {
//
// For other Variables, append the new data to the end of existing
data.
- // Max Harware error record variable data size is different from
common variable
+ // Max Harware error record variable data size is different from
common/auth variable
//
if ((Attributes & EFI_VARIABLE_HARDWARE_ERROR_RECORD) ==
EFI_VARIABLE_HARDWARE_ERROR_RECORD) {
MaxDataSize = PcdGet32 (PcdMaxHardwareErrorVariableSize) -
DataOffset;
@@ -3237,7 +3241,7 @@
//
// The size of the VariableName, including the Unicode Null in bytes plus
// the DataSize is limited to maximum size of PcdGet32
(PcdMaxHardwareErrorVariableSize)
- // bytes for HwErrRec, and PcdGet32 (PcdMaxVariableSize) bytes for the
others.
+ // bytes for HwErrRec.
//
if ((Attributes & EFI_VARIABLE_HARDWARE_ERROR_RECORD) ==
EFI_VARIABLE_HARDWARE_ERROR_RECORD) {
if (StrSize (VariableName) + PayloadSize > PcdGet32
(PcdMaxHardwareErrorVariableSize) - sizeof (VARIABLE_HEADER)) {
@@ -3249,10 +3253,16 @@
} else {
//
// The size of the VariableName, including the Unicode Null in bytes plus
- // the DataSize is limited to maximum size of PcdGet32
(PcdMaxVariableSize) bytes.
+ // the DataSize is limited to maximum size of Max(Auth)VariableSize bytes.
//
- if (StrSize (VariableName) + PayloadSize > PcdGet32 (PcdMaxVariableSize) -
sizeof (VARIABLE_HEADER)) {
- return EFI_INVALID_PARAMETER;
+ if ((Attributes & VARIABLE_ATTRIBUTE_AT_AW) != 0) {
+ if (StrSize (VariableName) + PayloadSize >
mVariableModuleGlobal->MaxAuthVariableSize - sizeof (VARIABLE_HEADER)) {
+ return EFI_INVALID_PARAMETER;
+ }
+ } else {
+ if (StrSize (VariableName) + PayloadSize >
mVariableModuleGlobal->MaxVariableSize - sizeof (VARIABLE_HEADER)) {
+ return EFI_INVALID_PARAMETER;
+ }
}
}
@@ -3442,9 +3452,13 @@
}
//
- // Let *MaximumVariableSize be PcdGet32 (PcdMaxVariableSize) with the
exception of the variable header size.
+ // Let *MaximumVariableSize be Max(Auth)VariableSize with the exception of
the variable header size.
//
- *MaximumVariableSize = PcdGet32 (PcdMaxVariableSize) - sizeof
(VARIABLE_HEADER);
+ if ((Attributes & VARIABLE_ATTRIBUTE_AT_AW) != 0) {
+ *MaximumVariableSize = mVariableModuleGlobal->MaxAuthVariableSize -
sizeof (VARIABLE_HEADER);
+ } else {
+ *MaximumVariableSize = mVariableModuleGlobal->MaxVariableSize - sizeof
(VARIABLE_HEADER);
+ }
}
//
@@ -3636,11 +3650,13 @@
}
RemainingHwErrVariableSpace = PcdGet32 (PcdHwErrStorageSize) -
mVariableModuleGlobal->HwErrVariableTotalSize;
+
//
// Check if the free area is below a threshold.
//
- if ((RemainingCommonRuntimeVariableSpace < PcdGet32 (PcdMaxVariableSize))
- || ((PcdGet32 (PcdHwErrStorageSize) != 0) &&
+ if (((RemainingCommonRuntimeVariableSpace <
mVariableModuleGlobal->MaxVariableSize) ||
+ (RemainingCommonRuntimeVariableSpace <
mVariableModuleGlobal->MaxAuthVariableSize)) ||
+ ((PcdGet32 (PcdHwErrStorageSize) != 0) &&
(RemainingHwErrVariableSpace < PcdGet32
(PcdMaxHardwareErrorVariableSize)))){
Status = Reclaim (
mVariableModuleGlobal->VariableGlobal.NonVolatileVariableBase,
@@ -3767,17 +3783,17 @@
// Note that in EdkII variable driver implementation, Hardware Error Record
type variable
// is stored with common variable in the same NV region. So the platform
integrator should
// ensure that the value of PcdHwErrStorageSize is less than the value of
- // VariableStoreLength - sizeof (VARIABLE_STORE_HEADER)).
+ // (VariableStoreLength - sizeof (VARIABLE_STORE_HEADER)).
//
ASSERT (HwErrStorageSize < (VariableStoreLength - sizeof
(VARIABLE_STORE_HEADER)));
//
// Ensure that the value of PcdMaxUserNvVariableSpaceSize is less than the
value of
- // VariableStoreLength - sizeof (VARIABLE_STORE_HEADER)) - PcdGet32
(PcdHwErrStorageSize).
+ // (VariableStoreLength - sizeof (VARIABLE_STORE_HEADER)) - PcdGet32
(PcdHwErrStorageSize).
//
ASSERT (MaxUserNvVariableSpaceSize < (VariableStoreLength - sizeof
(VARIABLE_STORE_HEADER) - HwErrStorageSize));
//
// Ensure that the value of PcdBoottimeReservedNvVariableSpaceSize is less
than the value of
- // VariableStoreLength - sizeof (VARIABLE_STORE_HEADER)) - PcdGet32
(PcdHwErrStorageSize).
+ // (VariableStoreLength - sizeof (VARIABLE_STORE_HEADER)) - PcdGet32
(PcdHwErrStorageSize).
//
ASSERT (BoottimeReservedNvVariableSpaceSize < (VariableStoreLength - sizeof
(VARIABLE_STORE_HEADER) - HwErrStorageSize));
@@ -3788,10 +3804,13 @@
DEBUG ((EFI_D_INFO, "Variable driver common space: 0x%x 0x%x 0x%x\n",
mVariableModuleGlobal->CommonVariableSpace,
mVariableModuleGlobal->CommonMaxUserVariableSpace,
mVariableModuleGlobal->CommonRuntimeVariableSpace));
//
- // The max variable or hardware error variable size should be < variable
store size.
+ // The max NV variable size should be < (VariableStoreLength - sizeof
(VARIABLE_STORE_HEADER)).
//
- ASSERT(MAX (PcdGet32 (PcdMaxVariableSize), PcdGet32
(PcdMaxHardwareErrorVariableSize)) < VariableStoreLength);
+ ASSERT (MAX_NV_VARIABLE_SIZE < (VariableStoreLength - sizeof
(VARIABLE_STORE_HEADER)));
+ mVariableModuleGlobal->MaxVariableSize = PcdGet32 (PcdMaxVariableSize);
+ mVariableModuleGlobal->MaxAuthVariableSize = ((PcdGet32
(PcdMaxAuthVariableSize) != 0) ? PcdGet32 (PcdMaxAuthVariableSize) :
mVariableModuleGlobal->MaxVariableSize);
+
//
// Parse non-volatile variable data and get last variable offset.
//
@@ -3963,7 +3982,7 @@
//
// Authenticated variable initialize.
//
- Status = AutenticatedVariableServiceInitialize ();
+ Status = AutenticatedVariableServiceInitialize
(mVariableModuleGlobal->MaxAuthVariableSize - sizeof (VARIABLE_HEADER));
return Status;
}
@@ -4019,7 +4038,8 @@
//
// Allocate memory for volatile variable store, note that there is a scratch
space to store scratch data.
//
- ScratchSize = MAX (PcdGet32 (PcdMaxVariableSize), PcdGet32
(PcdMaxHardwareErrorVariableSize));
+ ScratchSize = MAX_NV_VARIABLE_SIZE;
+ mVariableModuleGlobal->ScratchBufferSize = ScratchSize;
VolatileVariableStore = AllocateRuntimePool (PcdGet32 (PcdVariableStoreSize)
+ ScratchSize);
if (VolatileVariableStore == NULL) {
if (mVariableModuleGlobal->VariableGlobal.HobVariableBase != 0) {
Modified: trunk/edk2/SecurityPkg/VariableAuthenticated/RuntimeDxe/Variable.h
===================================================================
--- trunk/edk2/SecurityPkg/VariableAuthenticated/RuntimeDxe/Variable.h
2015-06-10 07:51:16 UTC (rev 17609)
+++ trunk/edk2/SecurityPkg/VariableAuthenticated/RuntimeDxe/Variable.h
2015-06-10 07:52:12 UTC (rev 17610)
@@ -61,7 +61,12 @@
#define VARIABLE_ATTRIBUTE_NV_BS_RT_HR (VARIABLE_ATTRIBUTE_NV_BS_RT |
EFI_VARIABLE_HARDWARE_ERROR_RECORD)
#define VARIABLE_ATTRIBUTE_NV_BS_RT_AW (VARIABLE_ATTRIBUTE_NV_BS_RT |
EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS)
#define VARIABLE_ATTRIBUTE_NV_BS_RT_AT_HR_AW (VARIABLE_ATTRIBUTE_NV_BS_RT_AT
| EFI_VARIABLE_HARDWARE_ERROR_RECORD | EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS)
+#define VARIABLE_ATTRIBUTE_AT_AW
(EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS |
EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS)
+#define MAX_NV_VARIABLE_SIZE (MAX (MAX (PcdGet32 (PcdMaxVariableSize), \
+ PcdGet32 (PcdMaxAuthVariableSize)), \
+ PcdGet32 (PcdMaxHardwareErrorVariableSize)))
+
///
/// The size of a 3 character ISO639 language code.
///
@@ -106,6 +111,9 @@
UINTN CommonVariableTotalSize;
UINTN CommonUserVariableTotalSize;
UINTN HwErrVariableTotalSize;
+ UINTN MaxVariableSize;
+ UINTN MaxAuthVariableSize;
+ UINTN ScratchBufferSize;
CHAR8 *PlatformLangCodes;
CHAR8 *LangCodes;
CHAR8 *PlatformLang;
Modified:
trunk/edk2/SecurityPkg/VariableAuthenticated/RuntimeDxe/VariableRuntimeDxe.inf
===================================================================
---
trunk/edk2/SecurityPkg/VariableAuthenticated/RuntimeDxe/VariableRuntimeDxe.inf
2015-06-10 07:51:16 UTC (rev 17609)
+++
trunk/edk2/SecurityPkg/VariableAuthenticated/RuntimeDxe/VariableRuntimeDxe.inf
2015-06-10 07:52:12 UTC (rev 17610)
@@ -139,6 +139,7 @@
gEfiMdeModulePkgTokenSpaceGuid.PcdFlashNvStorageVariableBase ##
SOMETIMES_CONSUMES
gEfiMdeModulePkgTokenSpaceGuid.PcdFlashNvStorageVariableBase64 ##
CONSUMES
gEfiMdeModulePkgTokenSpaceGuid.PcdMaxVariableSize ##
CONSUMES
+ gEfiMdeModulePkgTokenSpaceGuid.PcdMaxAuthVariableSize ##
CONSUMES
gEfiMdeModulePkgTokenSpaceGuid.PcdMaxHardwareErrorVariableSize ##
CONSUMES
gEfiMdeModulePkgTokenSpaceGuid.PcdVariableStoreSize ##
CONSUMES
gEfiMdeModulePkgTokenSpaceGuid.PcdHwErrStorageSize ##
CONSUMES
Modified: trunk/edk2/SecurityPkg/VariableAuthenticated/RuntimeDxe/VariableSmm.c
===================================================================
--- trunk/edk2/SecurityPkg/VariableAuthenticated/RuntimeDxe/VariableSmm.c
2015-06-10 07:51:16 UTC (rev 17609)
+++ trunk/edk2/SecurityPkg/VariableAuthenticated/RuntimeDxe/VariableSmm.c
2015-06-10 07:52:12 UTC (rev 17610)
@@ -932,7 +932,7 @@
);
ASSERT_EFI_ERROR (Status);
- mVariableBufferPayloadSize = MAX (PcdGet32 (PcdMaxVariableSize), PcdGet32
(PcdMaxHardwareErrorVariableSize)) +
+ mVariableBufferPayloadSize = MAX_NV_VARIABLE_SIZE +
OFFSET_OF
(SMM_VARIABLE_COMMUNICATE_VAR_CHECK_VARIABLE_PROPERTY, Name) - sizeof
(VARIABLE_HEADER);
Status = gSmst->SmmAllocatePool (
Modified:
trunk/edk2/SecurityPkg/VariableAuthenticated/RuntimeDxe/VariableSmm.inf
===================================================================
--- trunk/edk2/SecurityPkg/VariableAuthenticated/RuntimeDxe/VariableSmm.inf
2015-06-10 07:51:16 UTC (rev 17609)
+++ trunk/edk2/SecurityPkg/VariableAuthenticated/RuntimeDxe/VariableSmm.inf
2015-06-10 07:52:12 UTC (rev 17610)
@@ -146,6 +146,7 @@
gEfiMdeModulePkgTokenSpaceGuid.PcdFlashNvStorageVariableBase ##
SOMETIMES_CONSUMES
gEfiMdeModulePkgTokenSpaceGuid.PcdFlashNvStorageVariableBase64 ##
CONSUMES
gEfiMdeModulePkgTokenSpaceGuid.PcdMaxVariableSize ##
CONSUMES
+ gEfiMdeModulePkgTokenSpaceGuid.PcdMaxAuthVariableSize ##
CONSUMES
gEfiMdeModulePkgTokenSpaceGuid.PcdMaxHardwareErrorVariableSize ##
CONSUMES
gEfiMdeModulePkgTokenSpaceGuid.PcdVariableStoreSize ##
CONSUMES
gEfiMdeModulePkgTokenSpaceGuid.PcdHwErrStorageSize ##
CONSUMES
@@ -161,4 +162,4 @@
TRUE
[UserExtensions.TianoCore."ExtraFiles"]
- VariableSmmExtra.uni
\ No newline at end of file
+ VariableSmmExtra.uni
Modified:
trunk/edk2/SecurityPkg/VariableAuthenticated/RuntimeDxe/VariableSmmRuntimeDxe.c
===================================================================
---
trunk/edk2/SecurityPkg/VariableAuthenticated/RuntimeDxe/VariableSmmRuntimeDxe.c
2015-06-10 07:51:16 UTC (rev 17609)
+++
trunk/edk2/SecurityPkg/VariableAuthenticated/RuntimeDxe/VariableSmmRuntimeDxe.c
2015-06-10 07:52:12 UTC (rev 17610)
@@ -59,6 +59,10 @@
EDKII_VARIABLE_LOCK_PROTOCOL mVariableLock;
EDKII_VAR_CHECK_PROTOCOL mVarCheck;
+#define MAX_NV_VARIABLE_SIZE (MAX (MAX (PcdGet32 (PcdMaxVariableSize), \
+ PcdGet32 (PcdMaxAuthVariableSize)), \
+ PcdGet32 (PcdMaxHardwareErrorVariableSize)))
+
/**
SecureBoot Hook for SetVariable.
@@ -931,7 +935,7 @@
//
// Allocate memory for variable communicate buffer.
//
- mVariableBufferPayloadSize = MAX (PcdGet32 (PcdMaxVariableSize), PcdGet32
(PcdMaxHardwareErrorVariableSize)) +
+ mVariableBufferPayloadSize = MAX_NV_VARIABLE_SIZE +
OFFSET_OF
(SMM_VARIABLE_COMMUNICATE_VAR_CHECK_VARIABLE_PROPERTY, Name) - sizeof
(VARIABLE_HEADER);
mVariableBufferSize = SMM_COMMUNICATE_HEADER_SIZE +
SMM_VARIABLE_COMMUNICATE_HEADER_SIZE + mVariableBufferPayloadSize;
mVariableBuffer = AllocateRuntimePool (mVariableBufferSize);
Modified:
trunk/edk2/SecurityPkg/VariableAuthenticated/RuntimeDxe/VariableSmmRuntimeDxe.inf
===================================================================
---
trunk/edk2/SecurityPkg/VariableAuthenticated/RuntimeDxe/VariableSmmRuntimeDxe.inf
2015-06-10 07:51:16 UTC (rev 17609)
+++
trunk/edk2/SecurityPkg/VariableAuthenticated/RuntimeDxe/VariableSmmRuntimeDxe.inf
2015-06-10 07:52:12 UTC (rev 17610)
@@ -92,6 +92,7 @@
[Pcd]
gEfiMdeModulePkgTokenSpaceGuid.PcdMaxVariableSize ## CONSUMES
+ gEfiMdeModulePkgTokenSpaceGuid.PcdMaxAuthVariableSize ## CONSUMES
gEfiMdeModulePkgTokenSpaceGuid.PcdMaxHardwareErrorVariableSize ## CONSUMES
[Depex]
------------------------------------------------------------------------------
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