470 lines
11 KiB
C
470 lines
11 KiB
C
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/*++
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Copyright (c) 1998 Intel Corporation
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Module Name:
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protid.c
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Abstract:
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Shell environment variable management
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Revision History
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--*/
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#include "shelle.h"
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/*
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* The different variable catagories
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*/
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LIST_ENTRY SEnvEnv;
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LIST_ENTRY SEnvMap;
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LIST_ENTRY SEnvAlias;
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VOID
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SEnvInitVariables (
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VOID
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)
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{
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CHAR16 *Name;
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CHAR16 *Data;
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UINTN BufferSize;
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UINTN NameSize, DataSize;
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EFI_GUID Id;
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LIST_ENTRY *ListHead;
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VARIABLE_ID *Var;
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EFI_STATUS Status;
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BOOLEAN IsString;
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UINT32 Attributes;
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UINTN Size;
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/*
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* Initialize the different variable lists
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*/
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InitializeListHead (&SEnvEnv);
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InitializeListHead (&SEnvMap);
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InitializeListHead (&SEnvAlias);
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BufferSize = 1024;
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Name = AllocatePool (BufferSize);
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Data = AllocatePool (BufferSize);
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ASSERT(Name && Data);
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/*
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* Read all the variables in the system and collect ours
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*/
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Name[0] = 0;
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for (; ;) {
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NameSize = BufferSize;
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Status = RT->GetNextVariableName (&NameSize, Name, &Id);
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if (EFI_ERROR(Status)) {
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break;
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}
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/*
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* See if it's a shellenv variable
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*/
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ListHead = NULL;
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IsString = FALSE;
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if (CompareGuid (&Id, &SEnvEnvId) == 0) {
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ListHead = &SEnvEnv;
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IsString = TRUE;
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}
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if (CompareGuid (&Id, &SEnvMapId) == 0) {
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ListHead = &SEnvMap;
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}
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if (CompareGuid (&Id, &SEnvAliasId) == 0) {
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ListHead = &SEnvAlias;
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IsString = TRUE;
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}
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if (ListHead) {
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DataSize = BufferSize;
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Status = RT->GetVariable (Name, &Id, &Attributes, &DataSize, Data);
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if (!EFI_ERROR(Status)) {
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/*
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* Add this value
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*/
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Size = sizeof(VARIABLE_ID) + StrSize(Name) + DataSize;
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Var = AllocateZeroPool (Size);
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Var->Signature = VARIABLE_SIGNATURE;
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Var->u.Value = ((UINT8 *) Var) + sizeof(VARIABLE_ID);
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Var->Name = (CHAR16*) (Var->u.Value + DataSize);
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Var->ValueSize = DataSize;
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CopyMem (Var->u.Value, Data, DataSize);
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CopyMem (Var->Name, Name, NameSize);
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if( Attributes & EFI_VARIABLE_NON_VOLATILE ) {
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Var->Flags = NON_VOL ;
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}
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else {
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Var->Flags = VOL ;
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}
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InsertTailList (ListHead, &Var->Link);
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}
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}
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/*
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* If this is a protocol entry, add it
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*/
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if (CompareGuid (&Id, &SEnvProtId) == 0) {
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DataSize = BufferSize;
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Status = RT->GetVariable (Name, &Id, &Attributes, &DataSize, Data);
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if (!EFI_ERROR(Status) && DataSize == sizeof (EFI_GUID)) {
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SEnvIAddProtocol (FALSE, (EFI_GUID *) Data, NULL, NULL, Name);
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} else {
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DEBUG ((D_INIT|D_WARN, "SEnvInitVariables: skipping bogus protocol id %s\n", Var->Name));
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RT->SetVariable (Name, &SEnvProtId, 0, 0, NULL);
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}
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}
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}
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FreePool (Name);
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FreePool (Data);
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}
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CHAR16 *
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SEnvIGetStr (
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IN CHAR16 *Name,
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IN LIST_ENTRY *Head
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)
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{
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LIST_ENTRY *Link;
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VARIABLE_ID *Var;
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CHAR16 *Value;
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AcquireLock (&SEnvLock);
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Value = NULL;
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for (Link=Head->Flink; Link != Head; Link=Link->Flink) {
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Var = CR(Link, VARIABLE_ID, Link, VARIABLE_SIGNATURE);
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if (StriCmp (Var->Name, Name) == 0) {
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Value = Var->u.Str;
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break;
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}
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}
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ReleaseLock (&SEnvLock);
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return Value;
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}
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CHAR16 *
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SEnvGetMap (
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IN CHAR16 *Name
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)
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{
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return SEnvIGetStr (Name, &SEnvMap);
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}
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CHAR16 *
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SEnvGetEnv (
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IN CHAR16 *Name
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)
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{
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return SEnvIGetStr (Name, &SEnvEnv);
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}
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CHAR16 *
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SEnvGetAlias (
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IN CHAR16 *Name
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)
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{
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return SEnvIGetStr (Name, &SEnvAlias);
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}
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VOID
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SEnvSortVarList (
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IN LIST_ENTRY *Head
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)
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{
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ASSERT_LOCKED(&SEnvLock);
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return ;
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}
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EFI_STATUS
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SEnvCmdSA (
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IN EFI_HANDLE ImageHandle,
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IN EFI_SYSTEM_TABLE *SystemTable,
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IN LIST_ENTRY *Head,
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IN EFI_GUID *Guid
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)
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/* Code for shell "set" & "alias" command */
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{
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LIST_ENTRY *Link;
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VARIABLE_ID *Var;
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VARIABLE_ID *Found;
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CHAR16 *Name;
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CHAR16 *Value;
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UINTN Size, SLen, Len;
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BOOLEAN Delete;
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EFI_STATUS Status;
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UINTN Index;
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CHAR16 *p;
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BOOLEAN PageBreaks;
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UINTN TempColumn;
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UINTN ScreenCount;
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UINTN ScreenSize;
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CHAR16 ReturnStr[1];
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BOOLEAN Volatile;
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InitializeShellApplication (ImageHandle, SystemTable);
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Name = NULL;
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Value = NULL;
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Delete = FALSE;
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Status = EFI_SUCCESS;
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Found = NULL;
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Volatile = FALSE;
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/*
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* Crack arguments
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*/
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PageBreaks = FALSE;
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for (Index = 1; Index < SI->Argc; Index += 1) {
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p = SI->Argv[Index];
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if (*p == '-') {
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switch (p[1]) {
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case 'd':
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case 'D':
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Delete = TRUE;
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break;
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case 'b' :
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case 'B' :
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PageBreaks = TRUE;
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ST->ConOut->QueryMode (ST->ConOut, ST->ConOut->Mode->Mode, &TempColumn, &ScreenSize);
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ScreenCount = 0;
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break;
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case 'v' :
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case 'V' :
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Volatile = TRUE;
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break;
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default:
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Print (L"%ESet/Alias: Unknown flag %s\n", p);
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return EFI_INVALID_PARAMETER;
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}
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continue;
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}
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if (!Name) {
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Name = p;
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continue;
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}
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if (!Value) {
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Value = p;
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continue;
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}
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Print (L"%ESet/Alias: too many arguments\n");
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return EFI_INVALID_PARAMETER;
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}
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if (Delete && Value) {
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Print (L"%ESet/Alias: too many arguments\n");
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}
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/*
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* Process
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*/
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AcquireLock (&SEnvLock);
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if (!Name) {
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/* dump the list */
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SEnvSortVarList (Head);
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SLen = 0;
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for (Link=Head->Flink; Link != Head; Link=Link->Flink) {
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Var = CR(Link, VARIABLE_ID, Link, VARIABLE_SIGNATURE);
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Len = StrLen(Var->Name);
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if (Len > SLen) {
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SLen = Len;
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}
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}
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for (Link=Head->Flink; Link != Head; Link=Link->Flink) {
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Var = CR(Link, VARIABLE_ID, Link, VARIABLE_SIGNATURE);
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if( Var->Flags == VOL ) {
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Print(L" * %h-.*s : %s\n", SLen, Var->Name, Var->u.Str);
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}
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else {
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Print(L" %h-.*s : %s\n", SLen, Var->Name, Var->u.Str);
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}
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if (PageBreaks) {
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ScreenCount++;
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if (ScreenCount > ScreenSize - 4) {
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ScreenCount = 0;
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Print (L"\nPress Return to contiue :");
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Input (L"", ReturnStr, sizeof(ReturnStr)/sizeof(CHAR16));
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Print (L"\n\n");
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}
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}
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}
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} else {
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/*
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* Find the specified value
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*/
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for (Link=Head->Flink; Link != Head; Link=Link->Flink) {
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Var = CR(Link, VARIABLE_ID, Link, VARIABLE_SIGNATURE);
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if (StriCmp(Var->Name, Name) == 0) {
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Found = Var;
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break;
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}
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}
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if (Found && Delete) {
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/*
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* Remove it from the store
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*/
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Status = RT->SetVariable (Found->Name, Guid, 0, 0, NULL);
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if (Status == EFI_NOT_FOUND) {
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Print (L"Set/Alias: could not find '%hs'\n", Found->Name);
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Status = EFI_SUCCESS;
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}
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} else if (Value) {
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/*
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* Add it to the store
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*/
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if( Found && ( ( Volatile && ( Found->Flags == NON_VOL ) ) ||
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( !Volatile && ( Found->Flags == VOL ) ) ) )
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{
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if( Found->Flags == NON_VOL ) {
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Print (L"Set/Alias: '%hs' already exists as non-volatile variable\n", Found->Name ) ;
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}
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else {
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Print (L"Set/Alias: '%hs' already exists as volatile variable\n", Found->Name ) ;
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}
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Found = NULL ;
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Status = EFI_ACCESS_DENIED ;
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}
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else
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{
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Status = RT->SetVariable (
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Found ? Found->Name : Name,
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Guid,
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EFI_VARIABLE_BOOTSERVICE_ACCESS | ( Volatile ? 0 : EFI_VARIABLE_NON_VOLATILE ),
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StrSize(Value),
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Value
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);
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if (!EFI_ERROR(Status)) {
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/*
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* Make a new in memory copy
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*/
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Size = sizeof(VARIABLE_ID) + StrSize(Name) + StrSize(Value);
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Var = AllocateZeroPool (Size);
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Var->Signature = VARIABLE_SIGNATURE;
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Var->u.Value = ((UINT8 *) Var) + sizeof(VARIABLE_ID);
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Var->Name = (CHAR16*) (Var->u.Value + StrSize(Value));
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Var->ValueSize = StrSize(Value);
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StrCpy (Var->u.Str, Value);
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StrCpy (Var->Name, Found ? Found->Name : Name);
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if( Volatile ) {
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Var->Flags = VOL ;
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}
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else {
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Var->Flags = NON_VOL ;
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}
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InsertTailList (Head, &Var->Link);
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}
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}
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} else {
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if (Found) {
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Print(L" %hs : %s\n", Var->Name, Var->u.Str);
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} else {
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Print(L"'%es' not found\n", Name);
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}
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Found = NULL;
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}
|
||
|
|
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Remove the old in memory copy if there was one
|
||
|
|
*/
|
||
|
|
|
||
|
|
if (Found) {
|
||
|
|
RemoveEntryList (&Found->Link);
|
||
|
|
FreePool (Found);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
ReleaseLock (&SEnvLock);
|
||
|
|
return Status;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
EFI_STATUS
|
||
|
|
SEnvCmdSet (
|
||
|
|
IN EFI_HANDLE ImageHandle,
|
||
|
|
IN EFI_SYSTEM_TABLE *SystemTable
|
||
|
|
)
|
||
|
|
/* Code for internal shell "set" command */
|
||
|
|
{
|
||
|
|
return SEnvCmdSA (ImageHandle, SystemTable, &SEnvEnv, &SEnvEnvId);
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
EFI_STATUS
|
||
|
|
SEnvCmdAlias (
|
||
|
|
IN EFI_HANDLE ImageHandle,
|
||
|
|
IN EFI_SYSTEM_TABLE *SystemTable
|
||
|
|
)
|
||
|
|
/* Code for internal shell "set" command */
|
||
|
|
{
|
||
|
|
return SEnvCmdSA (ImageHandle, SystemTable, &SEnvAlias, &SEnvAliasId);
|
||
|
|
}
|
||
|
|
|