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-rw-r--r--ShellPkg/Application/Shell/FileHandleWrappers.c170
-rw-r--r--ShellPkg/Application/Shell/ShellEnvVar.c12
-rw-r--r--ShellPkg/Application/Shell/ShellProtocol.c4
3 files changed, 142 insertions, 44 deletions
diff --git a/ShellPkg/Application/Shell/FileHandleWrappers.c b/ShellPkg/Application/Shell/FileHandleWrappers.c
index 18f4169c7d..3c11d82944 100644
--- a/ShellPkg/Application/Shell/FileHandleWrappers.c
+++ b/ShellPkg/Application/Shell/FileHandleWrappers.c
@@ -1040,6 +1040,7 @@ FileInterfaceEnvClose(
UINTN NewSize;
EFI_STATUS Status;
BOOLEAN Volatile;
+ UINTN TotalSize;
//
// Most if not all UEFI commands will have an '\r\n' at the end of any output.
@@ -1049,6 +1050,7 @@ FileInterfaceEnvClose(
//
NewBuffer = NULL;
NewSize = 0;
+ TotalSize = 0;
Status = IsVolatileEnv (((EFI_FILE_PROTOCOL_ENVIRONMENT*)This)->Name, &Volatile);
if (EFI_ERROR (Status)) {
@@ -1057,7 +1059,8 @@ FileInterfaceEnvClose(
Status = SHELL_GET_ENVIRONMENT_VARIABLE(((EFI_FILE_PROTOCOL_ENVIRONMENT*)This)->Name, &NewSize, NewBuffer);
if (Status == EFI_BUFFER_TOO_SMALL) {
- NewBuffer = AllocateZeroPool(NewSize + sizeof(CHAR16));
+ TotalSize = NewSize + sizeof (CHAR16);
+ NewBuffer = AllocateZeroPool (TotalSize);
if (NewBuffer == NULL) {
return EFI_OUT_OF_RESOURCES;
}
@@ -1066,17 +1069,43 @@ FileInterfaceEnvClose(
if (!EFI_ERROR(Status) && NewBuffer != NULL) {
- if (StrSize(NewBuffer) > 6)
- {
- if ((((CHAR16*)NewBuffer)[(StrSize(NewBuffer)/2) - 2] == CHAR_LINEFEED)
- && (((CHAR16*)NewBuffer)[(StrSize(NewBuffer)/2) - 3] == CHAR_CARRIAGE_RETURN)) {
- ((CHAR16*)NewBuffer)[(StrSize(NewBuffer)/2) - 3] = CHAR_NULL;
+ if (TotalSize / sizeof (CHAR16) >= 3) {
+ if ( (((CHAR16*)NewBuffer)[TotalSize / sizeof (CHAR16) - 2] == CHAR_LINEFEED) &&
+ (((CHAR16*)NewBuffer)[TotalSize / sizeof (CHAR16) - 3] == CHAR_CARRIAGE_RETURN)
+ ) {
+ ((CHAR16*)NewBuffer)[TotalSize / sizeof (CHAR16) - 3] = CHAR_NULL;
}
if (Volatile) {
- Status = SHELL_SET_ENVIRONMENT_VARIABLE_V(((EFI_FILE_PROTOCOL_ENVIRONMENT*)This)->Name, StrSize(NewBuffer), NewBuffer);
+ Status = SHELL_SET_ENVIRONMENT_VARIABLE_V (
+ ((EFI_FILE_PROTOCOL_ENVIRONMENT*)This)->Name,
+ TotalSize - sizeof (CHAR16),
+ NewBuffer
+ );
+
+ if (!EFI_ERROR(Status)) {
+ Status = ShellAddEnvVarToList (
+ ((EFI_FILE_PROTOCOL_ENVIRONMENT*)This)->Name,
+ NewBuffer,
+ TotalSize,
+ EFI_VARIABLE_BOOTSERVICE_ACCESS
+ );
+ }
} else {
- Status = SHELL_SET_ENVIRONMENT_VARIABLE_NV(((EFI_FILE_PROTOCOL_ENVIRONMENT*)This)->Name, StrSize(NewBuffer), NewBuffer);
+ Status = SHELL_SET_ENVIRONMENT_VARIABLE_NV (
+ ((EFI_FILE_PROTOCOL_ENVIRONMENT*)This)->Name,
+ TotalSize - sizeof (CHAR16),
+ NewBuffer
+ );
+
+ if (!EFI_ERROR(Status)) {
+ Status = ShellAddEnvVarToList (
+ ((EFI_FILE_PROTOCOL_ENVIRONMENT*)This)->Name,
+ NewBuffer,
+ TotalSize,
+ EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS
+ );
+ }
}
}
}
@@ -1128,12 +1157,14 @@ FileInterfaceEnvRead(
/**
File style interface for Volatile Environment Variable (Write).
+ This function also caches the environment variable into gShellEnvVarList.
@param[in] This The pointer to the EFI_FILE_PROTOCOL object.
@param[in, out] BufferSize Size in bytes of Buffer.
@param[in] Buffer The pointer to the buffer to write.
- @retval EFI_SUCCESS The data was read.
+ @retval EFI_SUCCESS The data was successfully write to variable.
+ @retval SHELL_OUT_OF_RESOURCES A memory allocation failed.
**/
EFI_STATUS
EFIAPI
@@ -1146,41 +1177,71 @@ FileInterfaceEnvVolWrite(
VOID* NewBuffer;
UINTN NewSize;
EFI_STATUS Status;
+ UINTN TotalSize;
NewBuffer = NULL;
NewSize = 0;
+ TotalSize = 0;
Status = SHELL_GET_ENVIRONMENT_VARIABLE(((EFI_FILE_PROTOCOL_ENVIRONMENT*)This)->Name, &NewSize, NewBuffer);
- if (Status == EFI_BUFFER_TOO_SMALL){
- NewBuffer = AllocateZeroPool(NewSize + *BufferSize + sizeof(CHAR16));
+ if (Status == EFI_BUFFER_TOO_SMALL) {
+ TotalSize = NewSize + *BufferSize + sizeof (CHAR16);
+ } else if (Status == EFI_NOT_FOUND) {
+ TotalSize = *BufferSize + sizeof(CHAR16);
+ } else {
+ return Status;
+ }
+
+ NewBuffer = AllocateZeroPool (TotalSize);
+ if (NewBuffer == NULL) {
+ return EFI_OUT_OF_RESOURCES;
+ }
+
+ if (Status == EFI_BUFFER_TOO_SMALL) {
Status = SHELL_GET_ENVIRONMENT_VARIABLE(((EFI_FILE_PROTOCOL_ENVIRONMENT*)This)->Name, &NewSize, NewBuffer);
}
- if (!EFI_ERROR(Status) && NewBuffer != NULL) {
- while (((CHAR16*)NewBuffer)[NewSize/2] == CHAR_NULL) {
- //
- // We want to overwrite the CHAR_NULL
- //
- NewSize -= 2;
- }
- CopyMem((UINT8*)NewBuffer + NewSize + 2, Buffer, *BufferSize);
- Status = SHELL_SET_ENVIRONMENT_VARIABLE_V(((EFI_FILE_PROTOCOL_ENVIRONMENT*)This)->Name, StrSize(NewBuffer), NewBuffer);
- FreePool(NewBuffer);
- return (Status);
- } else {
- SHELL_FREE_NON_NULL(NewBuffer);
- return (SHELL_SET_ENVIRONMENT_VARIABLE_V(((EFI_FILE_PROTOCOL_ENVIRONMENT*)This)->Name, *BufferSize, Buffer));
+
+ if (EFI_ERROR (Status) && Status != EFI_NOT_FOUND) {
+ FreePool (NewBuffer);
+ return Status;
+ }
+
+ CopyMem ((UINT8*)NewBuffer + NewSize, Buffer, *BufferSize);
+ Status = ShellAddEnvVarToList (
+ ((EFI_FILE_PROTOCOL_ENVIRONMENT*)This)->Name,
+ NewBuffer,
+ TotalSize,
+ EFI_VARIABLE_BOOTSERVICE_ACCESS
+ );
+ if (EFI_ERROR(Status)) {
+ FreePool (NewBuffer);
+ return Status;
+ }
+
+ Status = SHELL_SET_ENVIRONMENT_VARIABLE_V (
+ ((EFI_FILE_PROTOCOL_ENVIRONMENT*)This)->Name,
+ TotalSize - sizeof (CHAR16),
+ NewBuffer
+ );
+ if (EFI_ERROR(Status)) {
+ ShellRemvoeEnvVarFromList (((EFI_FILE_PROTOCOL_ENVIRONMENT*)This)->Name);
}
+
+ FreePool (NewBuffer);
+ return Status;
}
/**
File style interface for Non Volatile Environment Variable (Write).
+ This function also caches the environment variable into gShellEnvVarList.
@param[in] This The pointer to the EFI_FILE_PROTOCOL object.
@param[in, out] BufferSize Size in bytes of Buffer.
@param[in] Buffer The pointer to the buffer to write.
- @retval EFI_SUCCESS The data was read.
+ @retval EFI_SUCCESS The data was successfully write to variable.
+ @retval SHELL_OUT_OF_RESOURCES A memory allocation failed.
**/
EFI_STATUS
EFIAPI
@@ -1193,27 +1254,58 @@ FileInterfaceEnvNonVolWrite(
VOID* NewBuffer;
UINTN NewSize;
EFI_STATUS Status;
+ UINTN TotalSize;
NewBuffer = NULL;
NewSize = 0;
+ TotalSize = 0;
Status = SHELL_GET_ENVIRONMENT_VARIABLE(((EFI_FILE_PROTOCOL_ENVIRONMENT*)This)->Name, &NewSize, NewBuffer);
- if (Status == EFI_BUFFER_TOO_SMALL){
- NewBuffer = AllocateZeroPool(NewSize + *BufferSize);
+ if (Status == EFI_BUFFER_TOO_SMALL) {
+ TotalSize = NewSize + *BufferSize + sizeof (CHAR16);
+ } else if (Status == EFI_NOT_FOUND) {
+ TotalSize = *BufferSize + sizeof (CHAR16);
+ } else {
+ return Status;
+ }
+
+ NewBuffer = AllocateZeroPool (TotalSize);
+ if (NewBuffer == NULL) {
+ return EFI_OUT_OF_RESOURCES;
+ }
+
+ if (Status == EFI_BUFFER_TOO_SMALL) {
Status = SHELL_GET_ENVIRONMENT_VARIABLE(((EFI_FILE_PROTOCOL_ENVIRONMENT*)This)->Name, &NewSize, NewBuffer);
}
- if (!EFI_ERROR(Status)) {
- CopyMem((UINT8*)NewBuffer + NewSize, Buffer, *BufferSize);
- return (SHELL_SET_ENVIRONMENT_VARIABLE_NV(
- ((EFI_FILE_PROTOCOL_ENVIRONMENT*)This)->Name,
- NewSize + *BufferSize,
- NewBuffer));
- } else {
- return (SHELL_SET_ENVIRONMENT_VARIABLE_NV(
- ((EFI_FILE_PROTOCOL_ENVIRONMENT*)This)->Name,
- *BufferSize,
- Buffer));
+
+ if (EFI_ERROR(Status) && Status != EFI_NOT_FOUND) {
+ FreePool (NewBuffer);
+ return Status;
+ }
+
+ CopyMem ((UINT8*) NewBuffer + NewSize, Buffer, *BufferSize);
+ Status = ShellAddEnvVarToList (
+ ((EFI_FILE_PROTOCOL_ENVIRONMENT*)This)->Name,
+ NewBuffer,
+ TotalSize,
+ EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS
+ );
+ if (EFI_ERROR (Status)) {
+ FreePool (NewBuffer);
+ return Status;
}
+
+ Status = SHELL_SET_ENVIRONMENT_VARIABLE_NV (
+ ((EFI_FILE_PROTOCOL_ENVIRONMENT*)This)->Name,
+ TotalSize - sizeof (CHAR16),
+ NewBuffer
+ );
+ if (EFI_ERROR (Status)) {
+ ShellRemvoeEnvVarFromList (((EFI_FILE_PROTOCOL_ENVIRONMENT*)This)->Name);
+ }
+
+ FreePool (NewBuffer);
+ return Status;
}
/**
diff --git a/ShellPkg/Application/Shell/ShellEnvVar.c b/ShellPkg/Application/Shell/ShellEnvVar.c
index 6d8c79b4ca..4c49c1ca98 100644
--- a/ShellPkg/Application/Shell/ShellEnvVar.c
+++ b/ShellPkg/Application/Shell/ShellEnvVar.c
@@ -178,7 +178,10 @@ GetEnvironmentVariableList(
Status = EFI_OUT_OF_RESOURCES;
} else {
ValSize = ValBufferSize;
- VarList->Val = AllocateZeroPool(ValSize);
+ //
+ // We need another CHAR16 to save '\0' in VarList->Val.
+ //
+ VarList->Val = AllocateZeroPool (ValSize + sizeof (CHAR16));
if (VarList->Val == NULL) {
SHELL_FREE_NON_NULL(VarList);
Status = EFI_OUT_OF_RESOURCES;
@@ -188,7 +191,10 @@ GetEnvironmentVariableList(
if (Status == EFI_BUFFER_TOO_SMALL){
ValBufferSize = ValSize > ValBufferSize * 2 ? ValSize : ValBufferSize * 2;
SHELL_FREE_NON_NULL (VarList->Val);
- VarList->Val = AllocateZeroPool(ValBufferSize);
+ //
+ // We need another CHAR16 to save '\0' in VarList->Val.
+ //
+ VarList->Val = AllocateZeroPool (ValBufferSize + sizeof (CHAR16));
if (VarList->Val == NULL) {
SHELL_FREE_NON_NULL(VarList);
Status = EFI_OUT_OF_RESOURCES;
@@ -272,7 +278,7 @@ SetEnvironmentVariableList(
; !IsNull(ListHead, &Node->Link)
; Node = (ENV_VAR_LIST*)GetNextNode(ListHead, &Node->Link)
){
- Size = StrSize(Node->Val);
+ Size = StrSize (Node->Val) - sizeof (CHAR16);
if (Node->Atts & EFI_VARIABLE_NON_VOLATILE) {
Status = SHELL_SET_ENVIRONMENT_VARIABLE_NV(Node->Key, Size, Node->Val);
} else {
diff --git a/ShellPkg/Application/Shell/ShellProtocol.c b/ShellPkg/Application/Shell/ShellProtocol.c
index 04b66c5aca..12c7c40524 100644
--- a/ShellPkg/Application/Shell/ShellProtocol.c
+++ b/ShellPkg/Application/Shell/ShellProtocol.c
@@ -2872,8 +2872,8 @@ InternalEfiShellSetEnv(
);
if (!EFI_ERROR (Status)) {
Status = Volatile
- ? SHELL_SET_ENVIRONMENT_VARIABLE_V(Name, StrSize(Value), Value)
- : SHELL_SET_ENVIRONMENT_VARIABLE_NV(Name, StrSize(Value), Value);
+ ? SHELL_SET_ENVIRONMENT_VARIABLE_V (Name, StrSize (Value) - sizeof (CHAR16), Value)
+ : SHELL_SET_ENVIRONMENT_VARIABLE_NV (Name, StrSize (Value) - sizeof (CHAR16), Value);
if (EFI_ERROR (Status)) {
ShellRemvoeEnvVarFromList(Name);
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-31 18:00:28 +0000