123 lines
4.2 KiB
C
123 lines
4.2 KiB
C
/*
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* Copyright (C) 2001-2003 Hewlett-Packard Co.
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* Contributed by Stephane Eranian <eranian@hpl.hp.com>
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*
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* This file is part of the ELILO, the EFI Linux boot loader.
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*
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* GNU EFI is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2, or (at your option)
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* any later version.
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*
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* GNU EFI is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with GNU EFI; see the file COPYING. If not, write to the Free
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* Software Foundation, 59 Temple Place - Suite 330, Boston, MA
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* 02111-1307, USA.
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*
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* Please check out the elilo.txt for complete documentation on how
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* to use this program.
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*/
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#ifndef __FILEOPS_H__
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#define __FILEOPS_H__
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#define FILEOPS_NAME_MAXLEN 32 /* length of filesystem name */
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/*
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* upper-level interface used by the bootloader
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*/
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typedef UINTN fops_fd_t;
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extern EFI_STATUS fops_open(CHAR16 *name, fops_fd_t *fd);
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extern EFI_STATUS fops_read(fops_fd_t fd,VOID *buf, UINTN *size);
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extern EFI_STATUS fops_close(fops_fd_t fd);
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extern EFI_STATUS fops_infosize(fops_fd_t fd, UINT64 *size);
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extern EFI_STATUS fops_seek(fops_fd_t fd, UINT64 newpos);
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extern EFI_STATUS fops_setdefaults(CHAR16 *config, CHAR16 *kname, UINTN maxlen, CHAR16 *devpath);
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extern EFI_STATUS fops_getdefault_path(CHAR16 *path, UINTN maxlen);
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extern CHAR16 *fops_bootdev_name(VOID);
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/*
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* fileops interface used by underlying filesystems layer
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*/
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typedef EFI_STATUS (*fops_open_t)(VOID *intf, CHAR16 *name, fops_fd_t *fd);
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typedef EFI_STATUS (*fops_read_t)(VOID *intf, fops_fd_t fd, VOID *buf, UINTN *size);
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typedef EFI_STATUS (*fops_close_t)(VOID *intf, fops_fd_t fd);
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typedef EFI_STATUS (*fops_infosize_t)(VOID *intf, fops_fd_t fd, UINT64 *size);
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typedef EFI_STATUS (*fops_seek_t)(VOID *intf, fops_fd_t fd, UINT64 newpos);
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typedef EFI_STATUS (*fops_setdefaults_t)(VOID *intf, CHAR16 *config, CHAR16 *kname, UINTN maxlen, CHAR16 *devpath);
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typedef EFI_STATUS (*fops_getdefault_path_t)(CHAR16 *path, UINTN maxlen);
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typedef struct {
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VOID *intf; /* pointer to underlying interface */
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fops_open_t open;
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fops_read_t read;
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fops_close_t close;
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fops_infosize_t infosize;
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fops_seek_t seek;
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fops_setdefaults_t setdefaults;
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fops_getdefault_path_t getdefault_path;
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EFI_HANDLE dev; /* handle on device on which proto is installed */
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CHAR16 name[FILEOPS_NAME_MAXLEN];
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} fileops_t;
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/*
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* used to register a new filsystem
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*/
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typedef INTN (*fops_fs_glue_t)(fileops_t *this, VOID *intf);
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typedef EFI_STATUS (*fops_fs_install_t)(VOID);
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typedef EFI_STATUS (*fops_fs_uninstall_t)(VOID);
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typedef struct {
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EFI_GUID proto; /* GUID of filesystem */
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fops_fs_glue_t glue; /* glue routine */
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fops_fs_install_t install; /* to go away with real EFI drivers */
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fops_fs_uninstall_t uninstall; /* to go away with real EFI drivers */
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} fileops_fs_t;
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/*
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* device description
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*/
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#define FILEOPS_DEVNAME_MAXLEN 16
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typedef struct {
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EFI_HANDLE dev;
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fileops_t *fops;
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CHAR16 name[FILEOPS_DEVNAME_MAXLEN];
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} device_t;
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extern INTN init_devices(EFI_HANDLE boot_handle);
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extern INTN close_devices(VOID);
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extern VOID print_devices(VOID);
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extern EFI_STATUS fops_get_next_device(UINTN pidx, CHAR16 *type, UINTN maxlen, UINTN *idx, CHAR16 *name, EFI_HANDLE *dev);
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extern INTN fops_split_path(CHAR16 *path, CHAR16 *dev);
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extern EFI_STATUS fops_get_device_handle(CHAR16 *name, EFI_HANDLE *dev);
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/*
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* device naming schemes
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*
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* Interface:
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* the scheme() function arguments are:
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* - the list of detected bootable device
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* - the number of entries in that table as argument
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*
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* There is no expected return value. If the scheme() cannot perform
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* its tasks, then IT MUST NOT OVERWRITE the generic naming scheme (devXXX) that
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* is ALWAYS installed by default. Partial modifications are possible, although
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* not recommended.
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*/
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typedef struct {
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CHAR16 *name;
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INTN (*install_scheme)(device_t *tab, UINTN ndev);
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} devname_scheme_t;
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#endif /* __FILEOPS_H__ */
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