263 lines
4.5 KiB
C
263 lines
4.5 KiB
C
/*++
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Copyright (c) 1991 Microsoft Corporation
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Module Name:
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UDFSBoot.h
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Abstract:
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This module defines globally used procedure and data structures used
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by CD/DVD boot for UDF images.
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Author:
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Vijayachandran Jayaseelan (vijayj@microsoft.com)
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Revision History:
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--*/
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#ifndef _UDFSBOOT_
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#define _UDFSBOOT_
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#include <udf.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define UDF_BLOCK_SIZE 2048
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#define UDF_MAX_VOLUMES 1
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//
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// forward declarations
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//
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typedef struct _UDF_VOLUME* PUDF_VOLUME;
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typedef struct _UDF_CACHE_ENTRY* PUDF_CACHE_ENTRY;
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typedef struct _UDF_FILE_DIRECTORY* PUDF_FILE_DIRECTORY;
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typedef PVOID PUDF_BLOCK;
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//
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// Volume abstraction
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//
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typedef struct _UDF_VOLUME {
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PUDF_CACHE_ENTRY Cache;
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ULONG StartBlk;
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ULONG BlockSize;
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ULONG DeviceId;
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ULONG RootDirBlk;
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} UDF_VOLUME;
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ARC_STATUS
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UDFSVolumeOpen(
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IN PUDF_VOLUME Volume,
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IN ULONG DeviceId
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);
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ARC_STATUS
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UDFSVolumeReadBlock(
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IN PUDF_VOLUME Volume,
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IN ULONG BlockIdx,
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OUT PUDF_BLOCK Block
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);
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//
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// File or Directory abstraction
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//
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typedef struct _UDF_FILE_IDENTIFIER {
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ULONG BlockIdx;
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USHORT Offset; // inside the block
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} UDF_FILE_IDENTIFIER, * PUDF_FILE_IDENTIFIER;
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typedef struct _UDF_FILE_DIRECTORY {
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PUDF_VOLUME Volume;
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ULONGLONG Size;
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ULONG IcbBlk;
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ULONG StartDataBlk;
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UDF_FILE_IDENTIFIER FileId;
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UCHAR NumExtents;
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BOOLEAN IsDirectory;
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} UDF_FILE_DIRECTORY;
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ARC_STATUS
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UDFSDirGetFirstFID(
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IN PUDF_FILE_DIRECTORY Dir,
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OUT PUDF_FILE_IDENTIFIER File,
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OUT PUDF_BLOCK Block
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);
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ARC_STATUS
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UDFSDirGetNextFID(
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IN PUDF_FILE_DIRECTORY Dir,
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IN OUT PUDF_FILE_IDENTIFIER File,
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IN OUT PUDF_BLOCK Block
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);
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ARC_STATUS
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UDFSDirGetFile(
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IN PUDF_FILE_DIRECTORY Dir,
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IN PCHAR Name,
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OUT PUDF_FILE_DIRECTORY File
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);
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ARC_STATUS
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UDFSFileReadBlock(
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IN PUDF_FILE_DIRECTORY File,
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IN ULONG BlockIdx,
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IN ULONG Size,
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OUT PUDF_BLOCK Block
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);
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ARC_STATUS
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UDFSFileRead(
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IN PUDF_FILE_DIRECTORY File,
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IN PVOID Buffer,
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IN ULONG BufferSize,
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OUT PULONG Transfer
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);
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ARC_STATUS
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UDFSFileSeek(
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IN PUDF_FILE_DIRECTORY File,
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IN PLARGE_INTEGER Offset,
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IN SEEK_MODE SeekMode
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);
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ARC_STATUS
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UDFSFileClose(
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IN PUDF_FILE_DIRECTORY File
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);
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//
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// Cache abstractions
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//
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#define UDF_MAX_PATH_LEN 256
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#define UDF_MAX_CACHE_ENTRIES 48
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typedef struct _UDF_CACHE_ENTRY {
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CHAR Name[UDF_MAX_PATH_LEN];
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USHORT Usage;
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UDF_FILE_DIRECTORY File;
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} UDF_CACHE_ENTRY;
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ULONG
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UDFCachePutEntry(
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IN OUT PUDF_CACHE_ENTRY Cache,
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IN PCHAR Name,
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IN PUDF_FILE_DIRECTORY File
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);
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ULONG
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UDFCacheGetEntryByName(
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IN PUDF_CACHE_ENTRY Cache,
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IN PCHAR Name,
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IN BOOLEAN Increment
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);
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VOID
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UDFCacheFreeEntry(
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IN OUT PUDF_CACHE_ENTRY Cache,
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IN ULONG Idx
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);
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VOID
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UDFCacheIncrementUsage(
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IN OUT PUDF_CACHE_ENTRY Cache,
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IN ULONG Idx
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);
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VOID
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UDFCacheDecrementUsage(
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IN OUT PUDF_CACHE_ENTRY Cache,
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IN ULONG Idx
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);
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//
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// abstractions used by outside (loader) world
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//
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typedef struct _UDFS_STRUCTURE_CONTEXT {
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PUDF_VOLUME Volume;
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} UDFS_STRUCTURE_CONTEXT, *PUDFS_STRUCTURE_CONTEXT;
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//
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// Define UDFS file context structure.
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//
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typedef struct _UDFS_FILE_CONTEXT {
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ULONG CacheIdx;
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} UDFS_FILE_CONTEXT, *PUDFS_FILE_CONTEXT;
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//
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// Define file I/O prototypes.
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//
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PBL_DEVICE_ENTRY_TABLE
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IsUDFSFileStructure (
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IN ULONG DeviceId,
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IN PVOID StructureContext
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);
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ARC_STATUS
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UDFSOpen (
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IN CHAR * FIRMWARE_PTR OpenPath,
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IN OPEN_MODE OpenMode,
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OUT ULONG * FIRMWARE_PTR FileId
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);
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ARC_STATUS
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UDFSClose (
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IN ULONG FileId
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);
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ARC_STATUS
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UDFSRead (
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IN ULONG FileId,
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OUT VOID * FIRMWARE_PTR Buffer,
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IN ULONG Length,
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OUT ULONG * FIRMWARE_PTR Count
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);
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ARC_STATUS
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UDFSSeek (
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IN ULONG FileId,
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IN LARGE_INTEGER * FIRMWARE_PTR Offset,
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IN SEEK_MODE SeekMode
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);
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ARC_STATUS
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UDFSWrite (
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IN ULONG FileId,
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IN VOID * FIRMWARE_PTR Buffer,
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IN ULONG Length,
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OUT ULONG * FIRMWARE_PTR Count
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);
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ARC_STATUS
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UDFSGetFileInformation (
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IN ULONG FileId,
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OUT FILE_INFORMATION * FIRMWARE_PTR Buffer
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);
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ARC_STATUS
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UDFSSetFileInformation (
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IN ULONG FileId,
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IN ULONG AttributeFlags,
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IN ULONG AttributeMask
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);
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ARC_STATUS
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UDFSInitialize(
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VOID
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);
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#ifdef __cplusplus
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}
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#endif
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#endif // _UDFSBOOT_
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