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Only traverse recovery file's FAT table to fast the recovery performance.

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Signed-off-by: erictian
Reviewed-by: niruiyu

(based on FatPkg commit 6e68a62cf0c6b8ecad2bceff4e8d86ff08d1f041)

[jordan.l.justen@intel.com: Use script to relicense to 2-clause BSD]
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Jordan Justen <jordan.l.justen@intel.com>
Acked-by: Mark Doran <mark.doran@intel.com>
Acked-by: Laszlo Ersek <lersek@redhat.com>
This commit is contained in:
Feng Tian
2011-11-22 03:01:14 +00:00
committed by Jordan Justen
parent 4d0e0c4510
commit 1d951a3086
2 changed files with 17 additions and 6 deletions
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10
FatPkg/FatPei/FatLiteAccess.c
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@@ -1,7 +1,7 @@
/** @file /** @file
FAT file system access routines for FAT recovery PEIM FAT file system access routines for FAT recovery PEIM
Copyright (c) 2006 - 2010, Intel Corporation. All rights reserved.<BR> Copyright (c) 2006 - 2011, Intel Corporation. All rights reserved.<BR>
This program and the accompanying materials are licensed and made available This program and the accompanying materials are licensed and made available
under the terms and conditions of the BSD License which accompanies this under the terms and conditions of the BSD License which accompanies this
@@ -315,7 +315,10 @@ FatSetFilePos (
} }
File->CurrentPos += Pos; File->CurrentPos += Pos;
//
// Calculate the amount of consecutive cluster occupied by the file.
// FatReadFile() will use it to read these blocks once.
//
File->StraightReadAmount = 0; File->StraightReadAmount = 0;
Cluster = File->CurrentCluster; Cluster = File->CurrentCluster;
while (!FAT_CLUSTER_FUNCTIONAL (Cluster)) { while (!FAT_CLUSTER_FUNCTIONAL (Cluster)) {
@@ -517,9 +520,6 @@ FatReadNextDirectoryEntry (
SubFile->StartingCluster = SubFile->CurrentCluster; SubFile->StartingCluster = SubFile->CurrentCluster;
SubFile->Volume = ParentDir->Volume; SubFile->Volume = ParentDir->Volume;
if (SubFile->StartingCluster != 0) {
Status = FatSetFilePos (PrivateData, SubFile, 0);
}
// //
// in Pei phase, time parameters do not need to be filled for minimum use. // in Pei phase, time parameters do not need to be filled for minimum use.
// //

13
FatPkg/FatPei/FatLiteApi.c
View File

@@ -1,7 +1,7 @@
/** @file /** @file
FAT recovery PEIM entry point, Ppi Functions and FAT Api functions. FAT recovery PEIM entry point, Ppi Functions and FAT Api functions.
Copyright (c) 2006 - 2010, Intel Corporation. All rights reserved.<BR> Copyright (c) 2006 - 2011, Intel Corporation. All rights reserved.<BR>
This program and the accompanying materials are licensed and made available This program and the accompanying materials are licensed and made available
under the terms and conditions of the BSD License which accompanies this under the terms and conditions of the BSD License which accompanies this
@@ -577,6 +577,7 @@ FindRecoveryFile (
// //
// Construct root directory file // Construct root directory file
// //
ZeroMem (&Parent, sizeof (PEI_FAT_FILE));
Parent.IsFixedRootDir = (BOOLEAN) ((PrivateData->Volume[VolumeIndex].FatType == Fat32) ? FALSE : TRUE); Parent.IsFixedRootDir = (BOOLEAN) ((PrivateData->Volume[VolumeIndex].FatType == Fat32) ? FALSE : TRUE);
Parent.Attributes = FAT_ATTR_DIRECTORY; Parent.Attributes = FAT_ATTR_DIRECTORY;
Parent.CurrentPos = 0; Parent.CurrentPos = 0;
@@ -593,6 +594,9 @@ FindRecoveryFile (
// //
Status = FatReadNextDirectoryEntry (PrivateData, &Parent, File); Status = FatReadNextDirectoryEntry (PrivateData, &Parent, File);
while (Status == EFI_SUCCESS) { while (Status == EFI_SUCCESS) {
//
// Compare whether the file name is recovery file name.
//
if (EngStriColl (PrivateData, FileName, File->FileName)) { if (EngStriColl (PrivateData, FileName, File->FileName)) {
break; break;
} }
@@ -604,6 +608,13 @@ FindRecoveryFile (
return EFI_NOT_FOUND; return EFI_NOT_FOUND;
} }
//
// Get the recovery file, set its file position to 0.
//
if (File->StartingCluster != 0) {
Status = FatSetFilePos (PrivateData, File, 0);
}
*Handle = File; *Handle = File;
return EFI_SUCCESS; return EFI_SUCCESS;