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Fix AutoUpdateLangVariable() logic to handle the case PlatformLang/Lang is set before PlatformLangCodes/LangCodes. 

Pre-allocate pool for runtime phase.

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@11087 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
niruiyu 2010-11-24 03:04:20 +00:00
parent 6c4986de2d
commit 1623ce4aad
3 changed files with 317 additions and 92 deletions
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311
MdeModulePkg/Universal/Variable/EmuRuntimeDxe/EmuVariable.c
View File

@ -395,7 +395,6 @@ UpdateVariableInfo (
**/
UINTN
EFIAPI
GetIndexFromSupportedLangCodes(
IN CHAR8 *SupportedLang,
IN CHAR8 *Lang,
@ -403,13 +402,11 @@ GetIndexFromSupportedLangCodes(
)
{
UINTN Index;
UINT32 CompareLength;
CHAR8 *Supported;
UINTN CompareLength;
UINTN LanguageLength;
Index = 0;
Supported = SupportedLang;
if (Iso639Language) {
CompareLength = 3;
CompareLength = ISO_639_2_ENTRY_SIZE;
for (Index = 0; Index < AsciiStrLen (SupportedLang); Index += CompareLength) {
if (AsciiStrnCmp (Lang, SupportedLang + Index, CompareLength) == 0) {
//
@ -425,20 +422,26 @@ GetIndexFromSupportedLangCodes(
//
// Compare RFC4646 language code
//
while (*Supported != '\0') {
Index = 0;
for (LanguageLength = 0; Lang[LanguageLength] != '\0'; LanguageLength++);
for (Index = 0; *SupportedLang != '\0'; Index++, SupportedLang += CompareLength) {
//
// take semicolon as delimitation, sequentially traverse supported language codes.
// Skip ';' characters in SupportedLang
//
for (CompareLength = 0; *Supported != ';' && *Supported != '\0'; CompareLength++) {
Supported++;
}
if (AsciiStrnCmp (Lang, Supported - CompareLength, CompareLength) == 0) {
for (; *SupportedLang != '\0' && *SupportedLang == ';'; SupportedLang++);
//
// Determine the length of the next language code in SupportedLang
//
for (CompareLength = 0; SupportedLang[CompareLength] != '\0' && SupportedLang[CompareLength] != ';'; CompareLength++);
if ((CompareLength == LanguageLength) &&
(AsciiStrnCmp (Lang, SupportedLang, CompareLength) == 0)) {
//
// Successfully find the index of Lang string in SupportedLang string.
//
return Index;
}
Index++;
}
ASSERT (FALSE);
return 0;
@ -472,7 +475,6 @@ GetIndexFromSupportedLangCodes(
**/
CHAR8 *
EFIAPI
GetLangFromSupportedLangCodes (
IN CHAR8 *SupportedLang,
IN UINTN Index,
@ -480,7 +482,7 @@ GetLangFromSupportedLangCodes (
)
{
UINTN SubIndex;
UINT32 CompareLength;
UINTN CompareLength;
CHAR8 *Supported;
SubIndex = 0;
@ -491,8 +493,8 @@ GetLangFromSupportedLangCodes (
// As this code will be invoked in RUNTIME, therefore there is not memory allocate/free operation.
// In driver entry, it pre-allocates a runtime attribute memory to accommodate this string.
//
CompareLength = 3;
SetMem (mVariableModuleGlobal->Lang, sizeof(mVariableModuleGlobal->Lang), 0);
CompareLength = ISO_639_2_ENTRY_SIZE;
mVariableModuleGlobal->Lang[CompareLength] = '\0';
return CopyMem (mVariableModuleGlobal->Lang, SupportedLang + Index * CompareLength, CompareLength);
} else {
@ -517,7 +519,7 @@ GetLangFromSupportedLangCodes (
// As this code will be invoked in RUNTIME, therefore there is not memory allocate/free operation.
// In driver entry, it pre-allocates a runtime attribute memory to accommodate this string.
//
SetMem (mVariableModuleGlobal->PlatformLang, sizeof (mVariableModuleGlobal->PlatformLang), 0);
mVariableModuleGlobal->PlatformLang[CompareLength] = '\0';
return CopyMem (mVariableModuleGlobal->PlatformLang, Supported - CompareLength, CompareLength);
}
SubIndex++;
@ -525,6 +527,136 @@ GetLangFromSupportedLangCodes (
}
}
/**
Returns a pointer to an allocated buffer that contains the best matching language
from a set of supported languages.
This function supports both ISO 639-2 and RFC 4646 language codes, but language
code types may not be mixed in a single call to this function. This function
supports a variable argument list that allows the caller to pass in a prioritized
list of language codes to test against all the language codes in SupportedLanguages.
If SupportedLanguages is NULL, then ASSERT().
@param[in] SupportedLanguages A pointer to a Null-terminated ASCII string that
contains a set of language codes in the format
specified by Iso639Language.
@param[in] Iso639Language If TRUE, then all language codes are assumed to be
in ISO 639-2 format. If FALSE, then all language
codes are assumed to be in RFC 4646 language format
@param[in] ... A variable argument list that contains pointers to
Null-terminated ASCII strings that contain one or more
language codes in the format specified by Iso639Language.
The first language code from each of these language
code lists is used to determine if it is an exact or
close match to any of the language codes in
SupportedLanguages. Close matches only apply to RFC 4646
language codes, and the matching algorithm from RFC 4647
is used to determine if a close match is present. If
an exact or close match is found, then the matching
language code from SupportedLanguages is returned. If
no matches are found, then the next variable argument
parameter is evaluated. The variable argument list
is terminated by a NULL.
@retval NULL The best matching language could not be found in SupportedLanguages.
@retval NULL There are not enough resources available to return the best matching
language.
@retval Other A pointer to a Null-terminated ASCII string that is the best matching
language in SupportedLanguages.
**/
CHAR8 *
VariableGetBestLanguage (
IN CONST CHAR8 *SupportedLanguages,
IN BOOLEAN Iso639Language,
...
)
{
VA_LIST Args;
CHAR8 *Language;
UINTN CompareLength;
UINTN LanguageLength;
CONST CHAR8 *Supported;
CHAR8 *Buffer;
ASSERT (SupportedLanguages != NULL);
VA_START (Args, Iso639Language);
while ((Language = VA_ARG (Args, CHAR8 *)) != NULL) {
//
// Default to ISO 639-2 mode
//
CompareLength = 3;
LanguageLength = MIN (3, AsciiStrLen (Language));
//
// If in RFC 4646 mode, then determine the length of the first RFC 4646 language code in Language
//
if (!Iso639Language) {
for (LanguageLength = 0; Language[LanguageLength] != 0 && Language[LanguageLength] != ';'; LanguageLength++);
}
//
// Trim back the length of Language used until it is empty
//
while (LanguageLength > 0) {
//
// Loop through all language codes in SupportedLanguages
//
for (Supported = SupportedLanguages; *Supported != '\0'; Supported += CompareLength) {
//
// In RFC 4646 mode, then Loop through all language codes in SupportedLanguages
//
if (!Iso639Language) {
//
// Skip ';' characters in Supported
//
for (; *Supported != '\0' && *Supported == ';'; Supported++);
//
// Determine the length of the next language code in Supported
//
for (CompareLength = 0; Supported[CompareLength] != 0 && Supported[CompareLength] != ';'; CompareLength++);
//
// If Language is longer than the Supported, then skip to the next language
//
if (LanguageLength > CompareLength) {
continue;
}
}
//
// See if the first LanguageLength characters in Supported match Language
//
if (AsciiStrnCmp (Supported, Language, LanguageLength) == 0) {
VA_END (Args);
Buffer = Iso639Language ? mVariableModuleGlobal->Lang : mVariableModuleGlobal->PlatformLang;
Buffer[CompareLength] = '\0';
return CopyMem (Buffer, Supported, CompareLength);
}
}
if (Iso639Language) {
//
// If ISO 639 mode, then each language can only be tested once
//
LanguageLength = 0;
} else {
//
// If RFC 4646 mode, then trim Language from the right to the next '-' character
//
for (LanguageLength--; LanguageLength > 0 && Language[LanguageLength] != '-'; LanguageLength--);
}
}
}
VA_END (Args);
//
// No matches were found
//
return NULL;
}
/**
Hook the operations in PlatformLangCodes, LangCodes, PlatformLang and Lang.
@ -539,11 +671,8 @@ GetLangFromSupportedLangCodes (
@param[in] DataSize Size of data. 0 means delete
@retval EFI_SUCCESS auto update operation is successful.
**/
EFI_STATUS
EFIAPI
VOID
AutoUpdateLangVariable(
IN CHAR16 *VariableName,
IN VOID *Data,
@ -556,32 +685,116 @@ AutoUpdateLangVariable(
UINTN Index;
UINT32 Attributes;
VARIABLE_POINTER_TRACK Variable;
BOOLEAN SetLanguageCodes;
//
// Don't do updates for delete operation
//
if (DataSize == 0) {
return;
}
SetLanguageCodes = FALSE;
if (StrCmp (VariableName, L"PlatformLangCodes") == 0) {
//
// PlatformLangCodes is a volatile variable, so it can not be updated at runtime.
//
if (EfiAtRuntime ()) {
return;
}
SetLanguageCodes = TRUE;
//
// According to UEFI spec, PlatformLangCodes is only set once in firmware initialization, and is read-only
// Therefore, in variable driver, only store the original value for other use.
//
if (mVariableModuleGlobal->PlatformLangCodes != NULL) {
FreePool (mVariableModuleGlobal->PlatformLangCodes);
}
mVariableModuleGlobal->PlatformLangCodes = AllocateRuntimeCopyPool (DataSize, Data);
ASSERT (mVariableModuleGlobal->PlatformLangCodes != NULL);
//
// PlatformLang holds a single language from PlatformLangCodes,
// so the size of PlatformLangCodes is enough for the PlatformLang.
//
if (mVariableModuleGlobal->PlatformLang != NULL) {
FreePool (mVariableModuleGlobal->PlatformLang);
}
mVariableModuleGlobal->PlatformLang = AllocateRuntimePool (DataSize);
ASSERT (mVariableModuleGlobal->PlatformLang != NULL);
} else if (StrCmp (VariableName, L"LangCodes") == 0) {
//
// LangCodes is a volatile variable, so it can not be updated at runtime.
//
if (EfiAtRuntime ()) {
return;
}
SetLanguageCodes = TRUE;
//
// According to UEFI spec, LangCodes is only set once in firmware initialization, and is read-only
// Therefore, in variable driver, only store the original value for other use.
//
if (mVariableModuleGlobal->LangCodes != NULL) {
FreePool (mVariableModuleGlobal->LangCodes);
}
mVariableModuleGlobal->LangCodes = AllocateRuntimeCopyPool (DataSize, Data);
ASSERT (mVariableModuleGlobal->LangCodes != NULL);
}
if (SetLanguageCodes
&& (mVariableModuleGlobal->PlatformLangCodes != NULL)
&& (mVariableModuleGlobal->LangCodes != NULL)) {
//
// Update Lang if PlatformLang is already set
// Update PlatformLang if Lang is already set
//
Status = FindVariable (L"PlatformLang", &gEfiGlobalVariableGuid, &Variable, (VARIABLE_GLOBAL *) mVariableModuleGlobal);
if (!EFI_ERROR (Status)) {
//
// Update Lang
//
VariableName = L"PlatformLang";
Data = GetVariableDataPtr (Variable.CurrPtr);
DataSize = Variable.CurrPtr->DataSize;
} else {
Status = FindVariable (L"Lang", &gEfiGlobalVariableGuid, &Variable, (VARIABLE_GLOBAL *) mVariableModuleGlobal);
if (!EFI_ERROR (Status)) {
//
// Update PlatformLang
//
VariableName = L"Lang";
Data = GetVariableDataPtr (Variable.CurrPtr);
DataSize = Variable.CurrPtr->DataSize;
} else {
//
// Neither PlatformLang nor Lang is set, directly return
//
return;
}
}
}
//
// According to UEFI spec, "Lang" and "PlatformLang" is NV|BS|RT attributions.
//
Attributes = EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS;
if (StrCmp (VariableName, L"PlatformLangCodes") == 0) {
if (StrCmp (VariableName, L"PlatformLang") == 0) {
//
// According to UEFI spec, PlatformLangCodes is only set once in firmware initialization, and is read-only
// Therefore, in variable driver, only store the original value for other use.
// Update Lang when PlatformLangCodes/LangCodes were set.
//
AsciiStrnCpy (mVariableModuleGlobal->PlatformLangCodes, Data, DataSize);
} else if (StrCmp (VariableName, L"LangCodes") == 0) {
//
// According to UEFI spec, LangCodes is only set once in firmware initialization, and is read-only
// Therefore, in variable driver, only store the original value for other use.
//
AsciiStrnCpy (mVariableModuleGlobal->LangCodes, Data, DataSize);
} else if ((StrCmp (VariableName, L"PlatformLang") == 0) && (DataSize != 0)) {
ASSERT (AsciiStrLen (mVariableModuleGlobal->PlatformLangCodes) != 0);
if ((mVariableModuleGlobal->PlatformLangCodes != NULL) && (mVariableModuleGlobal->LangCodes != NULL)) {
//
// When setting PlatformLang, firstly get most matched language string from supported language codes.
//
BestPlatformLang = GetBestLanguage(mVariableModuleGlobal->PlatformLangCodes, FALSE, Data, NULL);
BestPlatformLang = VariableGetBestLanguage (mVariableModuleGlobal->PlatformLangCodes, FALSE, Data, NULL);
if (BestPlatformLang != NULL) {
//
// Get the corresponding index in language codes.
//
@ -597,21 +810,24 @@ AutoUpdateLangVariable(
//
FindVariable (L"Lang", &gEfiGlobalVariableGuid, &Variable, (VARIABLE_GLOBAL *)mVariableModuleGlobal);
Status = UpdateVariable(L"Lang", &gEfiGlobalVariableGuid,
BestLang, ISO_639_2_ENTRY_SIZE + 1, Attributes, &Variable);
Status = UpdateVariable (L"Lang", &gEfiGlobalVariableGuid, BestLang, ISO_639_2_ENTRY_SIZE + 1, Attributes, &Variable);
DEBUG ((EFI_D_INFO, "Variable Driver Auto Update PlatformLang, PlatformLang:%a, Lang:%a\n", BestPlatformLang, BestLang));
ASSERT_EFI_ERROR(Status);
}
}
} else if ((StrCmp (VariableName, L"Lang") == 0) && (DataSize != 0)) {
ASSERT (AsciiStrLen (mVariableModuleGlobal->LangCodes) != 0);
} else if (StrCmp (VariableName, L"Lang") == 0) {
//
// Update PlatformLang when PlatformLangCodes/LangCodes were set.
//
if ((mVariableModuleGlobal->PlatformLangCodes != NULL) && (mVariableModuleGlobal->LangCodes != NULL)) {
//
// When setting Lang, firstly get most matched language string from supported language codes.
//
BestLang = GetBestLanguage(mVariableModuleGlobal->LangCodes, TRUE, Data, NULL);
BestLang = VariableGetBestLanguage (mVariableModuleGlobal->LangCodes, TRUE, Data, NULL);
if (BestLang != NULL) {
//
// Get the corresponding index in language codes.
//
@ -627,13 +843,14 @@ AutoUpdateLangVariable(
//
FindVariable (L"PlatformLang", &gEfiGlobalVariableGuid, &Variable, (VARIABLE_GLOBAL *)mVariableModuleGlobal);
Status = UpdateVariable(L"PlatformLang", &gEfiGlobalVariableGuid,
BestPlatformLang, AsciiStrSize (BestPlatformLang), Attributes, &Variable);
Status = UpdateVariable (L"PlatformLang", &gEfiGlobalVariableGuid, BestPlatformLang,
AsciiStrSize (BestPlatformLang), Attributes, &Variable);
DEBUG ((EFI_D_INFO, "Variable Driver Auto Update Lang, Lang:%a, PlatformLang:%a\n", BestLang, BestPlatformLang));
ASSERT_EFI_ERROR (Status);
}
return EFI_SUCCESS;
}
}
}
/**

5
MdeModulePkg/Universal/Variable/EmuRuntimeDxe/InitVariable.c
View File

@ -3,7 +3,7 @@
Implment all four UEFI runtime variable services and
install variable architeture protocol.
Copyright (c) 2006 - 2008, Intel Corporation. All rights reserved.<BR>
Copyright (c) 2006 - 2010, Intel Corporation. All rights reserved.<BR>
This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
@ -178,6 +178,9 @@ VariableClassAddressChangeEvent (
IN VOID *Context
)
{
EfiConvertPointer (0x0, (VOID **) &mVariableModuleGlobal->PlatformLangCodes);
EfiConvertPointer (0x0, (VOID **) &mVariableModuleGlobal->LangCodes);
EfiConvertPointer (0x0, (VOID **) &mVariableModuleGlobal->PlatformLang);
EfiConvertPointer (
0x0,
(VOID **) &mVariableModuleGlobal->VariableGlobal[Physical].NonVolatileVariableBase

15
MdeModulePkg/Universal/Variable/EmuRuntimeDxe/Variable.h
View File

@ -3,7 +3,7 @@
The internal header file includes the common header files, defines
internal structure and functions used by EmuVariable module.
Copyright (c) 2006 - 2008, Intel Corporation. All rights reserved.<BR>
Copyright (c) 2006 - 2010, Intel Corporation. All rights reserved.<BR>
This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
@ -38,6 +38,11 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
#define GET_VARIABLE_NAME_PTR(a) (CHAR16 *) ((UINTN) (a) + sizeof (VARIABLE_HEADER))
///
/// The size of a 3 character ISO639 language code.
///
#define ISO_639_2_ENTRY_SIZE 3
typedef enum {
Physical,
Virtual
@ -62,10 +67,10 @@ typedef struct {
UINTN NonVolatileLastVariableOffset;
UINTN CommonVariableTotalSize;
UINTN HwErrVariableTotalSize;
CHAR8 PlatformLangCodes[256]; //Pre-allocate 256 bytes space to accommodate the PlatformlangCodes.
CHAR8 LangCodes[256]; //Pre-allocate 256 bytes space to accommodate the langCodes.
CHAR8 PlatformLang[8]; //Pre-allocate 8 bytes space to accommodate the Platformlang variable.
CHAR8 Lang[4]; //Pre-allocate 4 bytes space to accommodate the lang variable.
CHAR8 *PlatformLangCodes;
CHAR8 *LangCodes;
CHAR8 *PlatformLang;
CHAR8 Lang[ISO_639_2_ENTRY_SIZE + 1];
} ESAL_VARIABLE_GLOBAL;
///