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v0.6.0
src/driver.h
160 строк
6 KB
Pete Batard
use a string device path to identify a GRUB device
11 июл 2014, 01:53
11 июл 2014, 01:53
8d1a8fe
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/* fs_driver.h - Wrapper for standalone EFI filesystem drivers */ /* * Copyright © 2014 Pete Batard <pete@akeo.ie> * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. */ #include <efi.h> #include <efilink.h> #pragma once #if !defined(__GNUC__) || (__GNUC__ < 4) || (__GNUC__ == 4 && __GNUC_MINOR__ < 7) #error gcc 4.7 or later is required for the compilation of this driver. #endif /* Having GNU_EFI_USE_MS_ABI should avoid the need for that ugly uefi_call_wrapper */ #if !defined(__MAKEWITH_GNUEFI) || !defined(GNU_EFI_USE_MS_ABI) #error gnu-efi, with option GNU_EFI_USE_MS_ABI, is required for the compilation of this driver. #endif /* Driver version */ #define FS_DRIVER_VERSION_MAJOR 0 #define FS_DRIVER_VERSION_MINOR 6 #define FS_DRIVER_VERSION_MICRO 0 #ifndef ARRAYSIZE #define ARRAYSIZE(A) (sizeof(A)/sizeof((A)[0])) #endif #ifndef MIN #define MIN(x,y) ((x)<(y)?(x):(y)) #endif #define _STRINGIFY(s) #s #define STRINGIFY(s) _STRINGIFY(s) #define _WIDEN(s) L ## s #define WIDEN(s) _WIDEN(s) #define MAX_PATH 256 #define MINIMUM_INFO_LENGTH (sizeof(EFI_FILE_INFO) + MAX_PATH * sizeof(CHAR16)) #define MINIMUM_FS_INFO_LENGTH (sizeof(EFI_FILE_SYSTEM_INFO) + MAX_PATH * sizeof(CHAR16)) #define IS_ROOT(File) (File == File->FileSystem->RootFile) /* Logging */ #define FS_LOGLEVEL_NONE 0 #define FS_LOGLEVEL_ERROR 1 #define FS_LOGLEVEL_WARNING 2 #define FS_LOGLEVEL_INFO 3 #define FS_LOGLEVEL_DEBUG 4 #define FS_LOGLEVEL_EXTRA 5 typedef UINTN (*Print_t) (IN CHAR16 *fmt, ... ); extern Print_t PrintError; extern Print_t PrintWarning; extern Print_t PrintInfo; extern Print_t PrintDebug; extern Print_t PrintExtra; /* Forward declaration */ struct _EFI_FS; /* A file instance */ typedef struct _EFI_GRUB_FILE { EFI_FILE EfiFile; BOOLEAN IsDir; INT64 DirIndex; INT32 Mtime; CHAR8 *path; CHAR8 *basename; INTN RefCount; VOID *GrubFile; struct _EFI_FS *FileSystem; } EFI_GRUB_FILE; /* A file system instance */ typedef struct _EFI_FS { LIST_ENTRY *Flink; LIST_ENTRY *Blink; EFI_FILE_IO_INTERFACE FileIoInterface; EFI_BLOCK_IO *BlockIo; EFI_DISK_IO *DiskIo; EFI_GRUB_FILE *RootFile; VOID *GrubDevice; CHAR16 *DevicePathString; } EFI_FS; /* Mirrors a similar construct from GRUB, while EFI-zing it */ typedef struct _GRUB_DIRHOOK_INFO { UINT32 Dir:1; UINT32 MtimeSet:1; UINT32 CaseInsensitive:1; UINT32 InodeSet:1; INT32 Mtime; UINT64 Inode; } GRUB_DIRHOOK_INFO; typedef INT32 (*GRUB_DIRHOOK) (const CHAR8 *name, const GRUB_DIRHOOK_INFO *Info, VOID *Data); /* Setup generic function calls for grub_<fs>_init and grub_<fs>_exit */ #define MAKE_FN_NAME(drivername, suffix) grub_ ## drivername ## _ ## suffix #define GRUB_FS_CALL(drivername, suffix) MAKE_FN_NAME(drivername, suffix) extern void GRUB_FS_CALL(DRIVERNAME, init)(void); extern void GRUB_FS_CALL(DRIVERNAME, fini)(void); #if defined(EXTRAMODULE) extern void GRUB_FS_CALL(EXTRAMODULE, init)(void); extern void GRUB_FS_CALL(EXTRAMODULE, fini)(void); #endif extern INTN LogLevel; extern EFI_HANDLE EfiImageHandle; extern EFI_GUID ShellVariable; extern CHAR16 *DriverNameString; extern VOID strcpya(CHAR8 *dst, CONST CHAR8 *src); extern CHAR8 *strchra(const CHAR8 *s, INTN c); extern CHAR8 *strrchra(const CHAR8 *s, INTN c); extern VOID SetLogging(VOID); extern VOID PrintStatusError(EFI_STATUS Status, const CHAR16 *Format, ...); extern VOID GrubDriverInit(VOID); extern VOID GrubDriverExit(VOID); extern CHAR16 *GrubGetUuid(EFI_FS *This); extern BOOLEAN GrubFSProbe(EFI_FS *This); extern EFI_STATUS GrubDeviceInit(EFI_FS *This); extern EFI_STATUS GrubDeviceExit(EFI_FS *This); extern VOID GrubTimeToEfiTime(const INT32 t, EFI_TIME *tp); extern VOID CopyPathRelative(CHAR8 *dest, CHAR8 *src, INTN len); extern EFI_STATUS GrubOpen(EFI_GRUB_FILE *File); extern EFI_STATUS GrubDir(EFI_GRUB_FILE *File, const CHAR8 *path, GRUB_DIRHOOK Hook, VOID *HookData); extern VOID GrubClose(EFI_GRUB_FILE *File); extern EFI_STATUS GrubRead(EFI_GRUB_FILE *File, VOID *Data, UINTN *Len); extern EFI_STATUS GrubLabel(EFI_GRUB_FILE *File, CHAR8 **label); extern EFI_STATUS GrubCreateFile(EFI_GRUB_FILE **File, EFI_FS *This); extern VOID GrubDestroyFile(EFI_GRUB_FILE *File); extern UINT64 GrubGetFileSize(EFI_GRUB_FILE *File); extern UINT64 GrubGetFileOffset(EFI_GRUB_FILE *File); extern VOID GrubSetFileOffset(EFI_GRUB_FILE *File, UINT64 Offset); extern CHAR16 *Utf8ToUtf16Alloc(CHAR8 *src); extern EFI_STATUS Utf8ToUtf16NoAlloc(CHAR8 *src, CHAR16 *Dst, UINTN Len); extern CHAR8 *Utf16ToUtf8Alloc(CHAR16 *Src); extern EFI_STATUS Utf16ToUtf8NoAlloc(CHAR16 *Src, CHAR8 *dst, UINTN len); extern EFI_STATUS FSInstall(EFI_FS *This, EFI_HANDLE ControllerHandle); extern VOID FSUninstall(EFI_FS *This, EFI_HANDLE ControllerHandle); extern EFI_STATUS EFIAPI FileOpenVolume(EFI_FILE_IO_INTERFACE *This, EFI_FILE_HANDLE *Root); extern EFI_GUID *GetFSGuid(VOID);