diff options
| author | xli24 <xli24@6f19259b-4bc3-4df7-8a09-765794883524> | 2007-01-11 06:37:39 +0000 |
|---|---|---|
| committer | xli24 <xli24@6f19259b-4bc3-4df7-8a09-765794883524> | 2007-01-11 06:37:39 +0000 |
| commit | 0e7bfce8d0dc29695d0eb141f16e7976abcc5486 (patch) | |
| tree | 95fe6aa7b9b40994b538b451f0c3a4fe16d0a6b4 /EdkNt32Pkg/Library | |
| parent | c271c1326b7aacf837a75407233da97d6caada34 (diff) | |
| download | edk2-platforms-0e7bfce8d0dc29695d0eb141f16e7976abcc5486.tar.xz | |
BDS code calls Hii->FindHandles() with hardcoded length.
New code provides function BdsLibGetHiiHandles() in generic BDS library, which detects actual necessary memory, allocates memory, and finds handles as output.
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@2216 6f19259b-4bc3-4df7-8a09-765794883524
Diffstat (limited to 'EdkNt32Pkg/Library')
| -rw-r--r-- | EdkNt32Pkg/Library/EdkGenericBdsLib/BdsMisc.c | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/EdkNt32Pkg/Library/EdkGenericBdsLib/BdsMisc.c b/EdkNt32Pkg/Library/EdkGenericBdsLib/BdsMisc.c index b88d05127a..908bc3059b 100644 --- a/EdkNt32Pkg/Library/EdkGenericBdsLib/BdsMisc.c +++ b/EdkNt32Pkg/Library/EdkGenericBdsLib/BdsMisc.c @@ -975,3 +975,56 @@ Returns: }
}
}
+
+EFI_STATUS
+BdsLibGetHiiHandles (
+ IN EFI_HII_PROTOCOL *Hii,
+ IN OUT UINT16 *HandleBufferLength,
+ OUT EFI_HII_HANDLE **HiiHandleBuffer
+ )
+/*++
+
+Routine Description:
+
+ Determines the handles that are currently active in the database.
+ It's the caller's responsibility to free handle buffer.
+
+Arguments:
+
+ This - A pointer to the EFI_HII_PROTOCOL instance.
+ HandleBufferLength - On input, a pointer to the length of the handle buffer. On output,
+ the length of the handle buffer that is required for the handles found.
+ HiiHandleBuffer - Pointer to an array of EFI_HII_PROTOCOL instances returned.
+
+Returns:
+
+ EFI_SUCCESS - Get an array of EFI_HII_PROTOCOL instances successfully.
+ EFI_INVALID_PARAMETER - Hii is NULL.
+ EFI_NOT_FOUND - Database not found.
+
+--*/
+{
+ UINT16 TempBufferLength;
+ EFI_STATUS Status;
+
+ TempBufferLength = 0;
+
+ //
+ // Try to find the actual buffer size for HiiHandle Buffer.
+ //
+ Status = Hii->FindHandles (Hii, &TempBufferLength, *HiiHandleBuffer);
+
+ if (Status == EFI_BUFFER_TOO_SMALL) {
+ *HiiHandleBuffer = AllocateZeroPool (TempBufferLength);
+ Status = Hii->FindHandles (Hii, &TempBufferLength, *HiiHandleBuffer);
+ //
+ // we should not fail here.
+ //
+ ASSERT_EFI_ERROR (Status);
+ }
+
+ *HandleBufferLength = TempBufferLength;
+
+ return Status;
+
+}
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