[ion] 69452: [BOOTLIB]: - Fix multiple bugs in ETFS code (confusion between file offset vs. disk offset) - Implement EtfsGetInformation, EtfsSetInformation, and fix ETFS_FILE definition to make thi...
5 Oct
2015
5 Oct
'15
5:53 a.m.
Author: ion
Date: Mon Oct 5 05:53:40 2015
New Revision: 69452
URL: http://svn.reactos.org/svn/reactos?rev=69452&view=rev
Log:
[BOOTLIB]:
- Fix multiple bugs in ETFS code (confusion between file offset vs. disk offset)
- Implement EtfsGetInformation, EtfsSetInformation, and fix ETFS_FILE definition to make
this easy.
- Implement EtfsRead.
- Fix multiple bugs in file I/O code (swapped/reversed validation checks)
- Make BlStatusPrint call EfiPrintf on debug builds, even without BD.
- Add some additional error logging.
Modified:
trunk/reactos/boot/environ/app/bootmgr/bootmgr.h
trunk/reactos/boot/environ/include/bl.h
trunk/reactos/boot/environ/lib/io/etfs.c
trunk/reactos/boot/environ/lib/io/file.c
trunk/reactos/boot/environ/lib/misc/debug.c
trunk/reactos/boot/environ/lib/misc/image.c
Modified: trunk/reactos/boot/environ/app/bootmgr/bootmgr.h
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/boot/environ/app/bootmgr/b…
==============================================================================
--- trunk/reactos/boot/environ/app/bootmgr/bootmgr.h [iso-8859-1] (original)
+++ trunk/reactos/boot/environ/app/bootmgr/bootmgr.h [iso-8859-1] Mon Oct 5 05:53:40
2015
@@ -49,7 +49,7 @@
ULONG Size;
} BL_PACKED_BOOT_ERROR, *PBL_PACKED_BOOT_ERROR;
-#define BL_FATAL_ERROR_BCD_READ 0x02
+#define BL_FATAL_ERROR_BCD_READ 0x01
/* FUNCTIONS *****************************************************************/
Modified: trunk/reactos/boot/environ/include/bl.h
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/boot/environ/include/bl.h?…
==============================================================================
--- trunk/reactos/boot/environ/include/bl.h [iso-8859-1] (original)
+++ trunk/reactos/boot/environ/include/bl.h [iso-8859-1] Mon Oct 5 05:53:40 2015
@@ -321,7 +321,7 @@
_In_ struct _BL_FILE_ENTRY* FileEntry,
_In_ PVOID Buffer,
_In_ ULONG Size,
- _Out_ PULONG BytesRead
+ _Out_opt_ PULONG BytesRead
);
typedef
@@ -786,8 +786,10 @@
typedef struct _BL_FILE_INFORMATION
{
- ULONGLONG FileSize;
- ULONGLONG CurrentOffset;
+ ULONGLONG Size;
+ ULONGLONG Offset;
+ PWCHAR FsName;
+ ULONG Flags;
} BL_FILE_INFORMATION, *PBL_FILE_INFORMATION;
typedef struct _BL_FILE_CALLBACKS
@@ -809,7 +811,7 @@
ULONG Flags;
ULONG ReferenceCount;
ULONG Unknown;
- ULONGLONG Unknown1;
+ ULONGLONG TotalBytesRead;
ULONGLONG Unknown2;
BL_FILE_CALLBACKS Callbacks;
PVOID FsSpecificData;
Modified: trunk/reactos/boot/environ/lib/io/etfs.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/boot/environ/lib/io/etfs.c…
==============================================================================
--- trunk/reactos/boot/environ/lib/io/etfs.c [iso-8859-1] (original)
+++ trunk/reactos/boot/environ/lib/io/etfs.c [iso-8859-1] Mon Oct 5 05:53:40 2015
@@ -36,12 +36,12 @@
typedef struct _BL_ETFS_FILE
{
+ ULONG DiskOffset;
ULONG DirOffset;
ULONG DirEntOffset;
- ULONGLONG Size;
- ULONGLONG Offset;
- PWCHAR FsName;
- ULONG Flags;
+
+ BL_FILE_INFORMATION;
+
ULONG DeviceId;
} BL_ETFS_FILE, *PBL_ETFS_FILE;
@@ -56,9 +56,35 @@
_Out_ PBL_FILE_ENTRY *FileEntry
);
+NTSTATUS
+EtfsGetInformation (
+ _In_ PBL_FILE_ENTRY FileEntry,
+ _Out_ PBL_FILE_INFORMATION FileInfo
+ );
+
+NTSTATUS
+EtfsSetInformation (
+ _In_ PBL_FILE_ENTRY FileEntry,
+ _In_ PBL_FILE_INFORMATION FileInfo
+ );
+
+NTSTATUS
+EtfsRead (
+ _In_ PBL_FILE_ENTRY FileEntry,
+ _In_ PVOID Buffer,
+ _In_ ULONG Size,
+ _Out_opt_ PULONG BytesReturned
+ );
+
BL_FILE_CALLBACKS EtfsFunctionTable =
{
EtfsOpen,
+ NULL,
+ EtfsRead,
+ NULL,
+ NULL,
+ EtfsGetInformation,
+ EtfsSetInformation
};
/* FUNCTIONS *****************************************************************/
@@ -205,7 +231,7 @@
EtfsFile = DirectoryEntry->FsSpecificData;
DeviceId = EtfsFile->DeviceId;
- FileOffset = EtfsFile->Offset;
+ FileOffset = EtfsFile->DiskOffset;
EtfsDevice = EtfsDeviceTable[DeviceId];
DirectoryOffset = *DirentOffset;
@@ -362,7 +388,7 @@
DirentOffset = EtfsFile->DirEntOffset;
if ((KeepOffset) ||
- (ALIGN_DOWN_BY((DirentOffset + EtfsFile->Offset), CD_SECTOR_SIZE) ==
+ (ALIGN_DOWN_BY((DirentOffset + EtfsFile->DiskOffset), CD_SECTOR_SIZE) ==
EtfsDevice->Offset))
{
Status = EtfspGetDirent(DirectoryEntry, &Dirent, &DirentOffset);
@@ -404,6 +430,108 @@
}
return Status;
+}
+
+NTSTATUS
+EtfsRead (
+ _In_ PBL_FILE_ENTRY FileEntry,
+ _In_ PVOID Buffer,
+ _In_ ULONG Size,
+ _Out_opt_ PULONG BytesReturned
+ )
+{
+ ULONG BytesRead;
+ PBL_ETFS_FILE EtfsFile;
+ NTSTATUS Status;
+
+ /* Assume failure for now */
+ BytesRead = 0;
+
+ /* Make sure that the read is within the file's boundaries */
+ EtfsFile = FileEntry->FsSpecificData;
+ if ((Size + EtfsFile->Offset) > EtfsFile->Size)
+ {
+ /* Bail out otherwise */
+ Status = STATUS_INVALID_PARAMETER;
+ }
+ else
+ {
+ /* Read the offset that matches this file's offset, on the disk */
+ Status = BlDeviceReadAtOffset(FileEntry->DeviceId,
+ Size,
+ EtfsFile->Offset + EtfsFile->DiskOffset,
+ Buffer,
+ &BytesRead);
+ if (NT_SUCCESS(Status))
+ {
+ /* Update the file offset and return the size as having been read */
+ EtfsFile->Offset += Size;
+ BytesRead = Size;
+ }
+ }
+
+ /* Check if caller wanted to know how many bytes were read */
+ if (BytesReturned)
+ {
+ /* Return the value */
+ *BytesReturned = BytesRead;
+ }
+
+ /* All done */
+ return Status;
+}
+
+NTSTATUS
+EtfsSetInformation (
+ _In_ PBL_FILE_ENTRY FileEntry,
+ _In_ PBL_FILE_INFORMATION FileInfo
+ )
+{
+ PBL_ETFS_FILE EtfsFile;
+ BL_FILE_INFORMATION LocalFileInfo;
+
+ /* Get the underlying ETFS file data structure */
+ EtfsFile = (PBL_ETFS_FILE)FileEntry->FsSpecificData;
+
+ /* Make a copy of the incoming attributes, but ignore the new offset */
+ LocalFileInfo = *FileInfo;
+ LocalFileInfo.Offset = EtfsFile->Offset;
+
+ /* Check if these match exactly the current file */
+ if (!RtlEqualMemory(&LocalFileInfo, &EtfsFile->Size, sizeof(*FileInfo)))
+ {
+ /* Nope -- which means caller is trying to change an immutable */
+ EfiPrintf(L"Incorrect information change\r\n");
+ return STATUS_INVALID_PARAMETER;
+ }
+
+ /* Is the offset past the end of the file? */
+ if (FileInfo->Offset >= EtfsFile->Size)
+ {
+ /* Don't allow EOF */
+ EfiPrintf(L"Offset too large: %lx vs %lx \r\n", FileInfo->Offset,
EtfsFile->Size);
+ return STATUS_INVALID_PARAMETER;
+ }
+
+ /* Update the offset */
+ EtfsFile->Offset = FileInfo->Offset;
+ return STATUS_SUCCESS;
+}
+
+NTSTATUS
+EtfsGetInformation (
+ _In_ PBL_FILE_ENTRY FileEntry,
+ _Out_ PBL_FILE_INFORMATION FileInfo
+ )
+{
+ PBL_ETFS_FILE EtfsFile;
+
+ /* Get the underlying ETFS file data structure */
+ EtfsFile = (PBL_ETFS_FILE)FileEntry->FsSpecificData;
+
+ /* Copy the cached information structure within it */
+ RtlCopyMemory(FileInfo, &EtfsFile->Size, sizeof(*FileInfo));
+ return STATUS_SUCCESS;
}
NTSTATUS
@@ -486,7 +614,7 @@
RtlCopyMemory(&NewFile->Callbacks,
&EtfsFunctionTable,
sizeof(NewFile->Callbacks));
- EtfsFile->Offset = FileOffset;
+ EtfsFile->DiskOffset = FileOffset;
EtfsFile->DirOffset = DirOffset;
EtfsFile->Size = FileSize;
EtfsFile->DeviceId = DeviceId;
@@ -794,7 +922,7 @@
RootEntry->FsSpecificData = EtfsFile;
EtfsFile->DeviceId = DeviceId;
EtfsFile->Flags |= 1;
- EtfsFile->Offset = EtfsDevice->RootDirOffset;
+ EtfsFile->DiskOffset = EtfsDevice->RootDirOffset;
EtfsFile->DirOffset = 0;
EtfsFile->Size = EtfsDevice->RootDirSize;
EtfsFile->FsName = L"cdfs";
Modified: trunk/reactos/boot/environ/lib/io/file.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/boot/environ/lib/io/file.c…
==============================================================================
--- trunk/reactos/boot/environ/lib/io/file.c [iso-8859-1] (original)
+++ trunk/reactos/boot/environ/lib/io/file.c [iso-8859-1] Mon Oct 5 05:53:40 2015
@@ -434,7 +434,7 @@
if (++FileEntry->ReferenceCount == 1)
{
/* Reset unknowns */
- FileEntry->Unknown1 = 0;
+ FileEntry->TotalBytesRead = 0;
FileEntry->Unknown2 = 0;
}
@@ -548,7 +548,7 @@
}
/* Validate file ID */
- if (FileEntries > FileId)
+ if (FileId > FileEntries)
{
return STATUS_INVALID_PARAMETER;
}
@@ -579,7 +579,7 @@
}
/* Validate file ID */
- if (FileEntries > FileId)
+ if (FileId > FileEntries)
{
return STATUS_INVALID_PARAMETER;
}
@@ -612,7 +612,7 @@
Size = 0;
/* Make sure we didn't overshoot */
- if (FileInformation->CurrentOffset > FileInformation->FileSize)
+ if (FileInformation->Offset > FileInformation->Size)
{
/* Bail out */
Status = STATUS_INVALID_PARAMETER;
@@ -621,9 +621,9 @@
/* Compute the appropriate 32-bit size of this read, based on file size */
Size = ULONG_MAX;
- if ((FileInformation->FileSize - FileInformation->CurrentOffset) <=
ULONG_MAX)
- {
- Size = (ULONG)(FileInformation->FileSize) -
(ULONG)(FileInformation->CurrentOffset);
+ if ((FileInformation->Size - FileInformation->Offset) <= ULONG_MAX)
+ {
+ Size = (ULONG)(FileInformation->Size) - (ULONG)(FileInformation->Offset);
}
/* Check if the caller has an input buffer */
@@ -683,7 +683,7 @@
}
/* Bail out of the file ID is invalid */
- if (FileEntries > FileId)
+ if (FileId > FileEntries)
{
return STATUS_INVALID_PARAMETER;
}
@@ -774,7 +774,7 @@
}
/* Increment the number of bytes read */
- FileEntry->Unknown1 += RequiredSize;
+ FileEntry->TotalBytesRead += RequiredSize;
/* Check if the unknown flag on the device was changed during this routine */
if (ChangedUnknown)
@@ -811,8 +811,8 @@
}
/* Save the current offset, and overwrite it with the one we want */
- FileOffset = FileInfo.CurrentOffset;
- FileInfo.CurrentOffset = ByteOffset;
+ FileOffset = FileInfo.Offset;
+ FileInfo.Offset = ByteOffset;
/* Check the validity of the read and the actual size to read */
RequiredSize = Size;
@@ -824,11 +824,12 @@
if (!NT_SUCCESS(Status))
{
/* Bail out if the read is invalid */
+ EfiPrintf(L"File info check failure: %lx\n", Status);
return Status;
}
/* Check if the offset we're requesting is not the current offset */
- if (FileInfo.CurrentOffset != FileOffset)
+ if (FileInfo.Offset != FileOffset)
{
/* Set the new offset to use */
Status = BlFileSetInformation(FileId, &FileInfo);
@@ -848,10 +849,10 @@
if (!NT_SUCCESS(Status))
{
/* The read failed -- had we modified the offset? */
- if (FileInfo.CurrentOffset != FileOffset)
+ if (FileInfo.Offset != FileOffset)
{
/* Restore the offset back to its original value */
- FileInfo.CurrentOffset = FileOffset;
+ FileInfo.Offset = FileOffset;
BlFileSetInformation(FileId, &FileInfo);
}
}
Modified: trunk/reactos/boot/environ/lib/misc/debug.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/boot/environ/lib/misc/debu…
==============================================================================
--- trunk/reactos/boot/environ/lib/misc/debug.c [iso-8859-1] (original)
+++ trunk/reactos/boot/environ/lib/misc/debug.c [iso-8859-1] Mon Oct 5 05:53:40 2015
@@ -83,11 +83,19 @@
va_start(va, Format);
/* Check if the boot debugger is enabled */
- if (BlBdDebuggerEnabled())
+ if (BlBdDebuggerEnabled()
+#if (defined(DBG))
+ || TRUE
+#endif
+ )
{
/* Print the string out into a buffer */
if (vswprintf(BlScratchBuffer, Format, va) > 0)
{
+#if defined(DBG)
+ EfiPrintf(BlScratchBuffer);
+ EfiPrintf(L"\r\n");
+#endif
/* Make it a UNICODE_STRING */
RtlInitUnicodeString(&UnicodeString, BlScratchBuffer);
Modified: trunk/reactos/boot/environ/lib/misc/image.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/boot/environ/lib/misc/imag…
==============================================================================
--- trunk/reactos/boot/environ/lib/misc/image.c [iso-8859-1] (original)
+++ trunk/reactos/boot/environ/lib/misc/image.c [iso-8859-1] Mon Oct 5 05:53:40 2015
@@ -39,8 +39,8 @@
}
/* We only support files less than 4GB in the Image Mapped */
- Size = FileInformation.FileSize;
- if (FileInformation.FileSize > ULONG_MAX)
+ Size = FileInformation.Size;
+ if (FileInformation.Size > ULONG_MAX)
{
return STATUS_NOT_SUPPORTED;
}
@@ -392,6 +392,7 @@
Status = ImgpOpenFile(DeviceId, FileName, DeviceId, &FileHandle);
if (!NT_SUCCESS(Status))
{
+ EfiPrintf(L"Error opening file: %lx\r\n", Status);
goto Quickie;
}
@@ -399,6 +400,7 @@
Status = ImgpGetFileSize(&FileHandle, &ImageSize);
if (!NT_SUCCESS(Status))
{
+ EfiPrintf(L"Error getting file size: %lx\r\n", Status);
goto Quickie;
}
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