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MdeModulePkg RamDiskDxe: Fix wrong HII behavior for more than 8 RAM disks

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The RamDiskDxe driver originally uses a variable-length HII varstore to
retrieve the HII checkbox status of each registered RAM disk.

However, HII does not support the variable-length varstore feature.
Therefore, only the checkbox status for the first 8 RAM disks are tracked
for the following definition of HII varstore structure considering the
alignment:

typedef struct {
  UINT64    Size;
  UINT8     RamDiskList[0];
  } RAM_DISK_CONFIGURATION;

This commit uses the private data of each registered RAM disks to track
the HII checkbox status instead to resolve the issue.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Hao Wu <hao.a.wu@intel.com>
Reviewed-by: Feng Tian <feng.tian@intel.com>
This commit is contained in:
Hao Wu
2016-04-20 13:23:59 +08:00
parent 259d87146b
commit 09abc63675
5 changed files with 38 additions and 30 deletions
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47
MdeModulePkg/Universal/Disk/RamDiskDxe/RamDiskImpl.c
View File

@@ -193,7 +193,6 @@ UnregisterAllRamDisks (
FreePool (PrivateData->DevicePath);
FreePool (PrivateData);
ListEntryNum--;
}
}
}
@@ -263,7 +262,7 @@ RamDiskExtractConfig (
// Convert buffer data to <ConfigResp> by helper function BlockToConfig()
//
ConfigPrivate = RAM_DISK_CONFIG_PRIVATE_FROM_THIS (This);
BufferSize = sizeof (RAM_DISK_CONFIGURATION) + ListEntryNum;
BufferSize = sizeof (RAM_DISK_CONFIGURATION);
Configuration = AllocateZeroPool (BufferSize);
if (Configuration == NULL) {
return EFI_OUT_OF_RESOURCES;
@@ -557,8 +556,14 @@ UpdateMainForm (
Index = 0;
EFI_LIST_FOR_EACH (Entry, &RegisteredRamDisks) {
PrivateData = RAM_DISK_PRIVATE_FROM_THIS (Entry);
String = RamDiskStr;
PrivateData = RAM_DISK_PRIVATE_FROM_THIS (Entry);
PrivateData->CheckBoxId = (EFI_QUESTION_ID)
(MAIN_CHECKBOX_QUESTION_ID_START + Index);
//
// CheckBox is unchecked by default.
//
PrivateData->CheckBoxChecked = FALSE;
String = RamDiskStr;
UnicodeSPrint (
String,
@@ -574,12 +579,12 @@ UpdateMainForm (
HiiCreateCheckBoxOpCode (
StartOpCodeHandle,
(EFI_QUESTION_ID) (MAIN_CHECKBOX_QUESTION_ID_START + Index),
RAM_DISK_CONFIGURATION_VARSTORE_ID,
(UINT16) (RAM_DISK_LIST_VAR_OFFSET + Index),
PrivateData->CheckBoxId,
0,
0,
StringId,
STRING_TOKEN (STR_RAM_DISK_LIST_HELP),
0,
EFI_IFR_FLAG_CALLBACK,
0,
NULL
);
@@ -634,7 +639,6 @@ RamDiskCallback (
)
{
EFI_STATUS Status;
UINTN Index;
RAM_DISK_PRIVATE_DATA *PrivateData;
RAM_DISK_CONFIG_PRIVATE_DATA *ConfigPrivate;
RAM_DISK_CONFIGURATION *Configuration;
@@ -679,7 +683,7 @@ RamDiskCallback (
//
// Get Browser data
//
Configuration = AllocateZeroPool (sizeof (RAM_DISK_CONFIGURATION) + ListEntryNum);
Configuration = AllocateZeroPool (sizeof (RAM_DISK_CONFIGURATION));
if (Configuration == NULL) {
return EFI_OUT_OF_RESOURCES;
}
@@ -689,7 +693,7 @@ RamDiskCallback (
HiiGetBrowserData (
&gRamDiskFormSetGuid,
mRamDiskStorageName,
sizeof (RAM_DISK_CONFIGURATION) + ListEntryNum,
sizeof (RAM_DISK_CONFIGURATION),
(UINT8 *) Configuration
);
@@ -742,11 +746,9 @@ RamDiskCallback (
//
// Remove the selected RAM disks
//
Index = 0;
EFI_LIST_FOR_EACH_SAFE (Entry, NextEntry, &RegisteredRamDisks) {
if (Configuration->RamDiskList[Index++] != 0) {
PrivateData = RAM_DISK_PRIVATE_FROM_THIS (Entry);
PrivateData = RAM_DISK_PRIVATE_FROM_THIS (Entry);
if (PrivateData->CheckBoxChecked) {
RamDiskUnregister (
(EFI_DEVICE_PATH_PROTOCOL *) PrivateData->DevicePath
);
@@ -756,7 +758,6 @@ RamDiskCallback (
UpdateMainForm (ConfigPrivate);
*ActionRequest = EFI_BROWSER_ACTION_REQUEST_FORM_APPLY;
ZeroMem (Configuration->RamDiskList, ListEntryNum);
break;
case CREATE_RAW_SUBMIT_QUESTION_ID:
@@ -781,6 +782,18 @@ RamDiskCallback (
break;
default:
//
// QuestionIds for checkboxes
//
if ((QuestionId >= MAIN_CHECKBOX_QUESTION_ID_START) &&
(QuestionId < CREATE_RAW_RAM_DISK_FORM_ID)) {
EFI_LIST_FOR_EACH (Entry, &RegisteredRamDisks) {
PrivateData = RAM_DISK_PRIVATE_FROM_THIS (Entry);
if (PrivateData->CheckBoxId == QuestionId) {
PrivateData->CheckBoxChecked = (BOOLEAN) (Value->u8 != 0);
}
}
}
break;
}
}
@@ -789,7 +802,7 @@ RamDiskCallback (
HiiSetBrowserData (
&gRamDiskFormSetGuid,
mRamDiskStorageName,
sizeof (RAM_DISK_CONFIGURATION) + ListEntryNum,
sizeof (RAM_DISK_CONFIGURATION),
(UINT8 *) Configuration,
NULL
);