grub/include/grub/fs.h
robertmh 042484d78e 2009-10-25 Robert Millan <rmh.grub@aybabtu.com>
* include/grub/fs.h [GRUB_UTIL] (struct grub_fs): Add
        `reserved_first_sector' member.
        * fs/ext2.c [GRUB_UTIL] (grub_ext2_fs): Initialize
        `reserved_first_sector' to 1.
        * fs/fat.c [GRUB_UTIL] (grub_fat_fs): Likewise.
        * fs/ntfs.c [GRUB_UTIL] (grub_ntfs_fs): Likewise.
        * fs/hfsplus.c [GRUB_UTIL] (grub_hfsplus_fs): Likewise.
        * util/i386/pc/grub-setup.c (setup): Add safety check that probes for
        filesystems which begin at first sector.
        (options): New option --skip-fs-probe.   
        (main): Handle --skip-fs-probe and pass it to setup().
2009-10-25 15:23:48 +00:00

96 lines
3.2 KiB
C

/* fs.h - filesystem manager */
/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2002,2003,2004,2007,2008 Free Software Foundation, Inc.
*
* GRUB 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.
*
* GRUB 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 GRUB. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef GRUB_FS_HEADER
#define GRUB_FS_HEADER 1
#include <grub/device.h>
#include <grub/symbol.h>
#include <grub/types.h>
/* Forward declaration is required, because of mutual reference. */
struct grub_file;
struct grub_dirhook_info
{
int dir:1;
int mtimeset:1;
int case_insensitive:1;
grub_int32_t mtime;
};
/* Filesystem descriptor. */
struct grub_fs
{
/* My name. */
const char *name;
/* Call HOOK with each file under DIR. */
grub_err_t (*dir) (grub_device_t device, const char *path,
int (*hook) (const char *filename,
const struct grub_dirhook_info *info));
/* Open a file named NAME and initialize FILE. */
grub_err_t (*open) (struct grub_file *file, const char *name);
/* Read LEN bytes data from FILE into BUF. */
grub_ssize_t (*read) (struct grub_file *file, char *buf, grub_size_t len);
/* Close the file FILE. */
grub_err_t (*close) (struct grub_file *file);
/* Return the label of the device DEVICE in LABEL. The label is
returned in a grub_malloc'ed buffer and should be freed by the
caller. */
grub_err_t (*label) (grub_device_t device, char **label);
/* Return the uuid of the device DEVICE in UUID. The uuid is
returned in a grub_malloc'ed buffer and should be freed by the
caller. */
grub_err_t (*uuid) (grub_device_t device, char **uuid);
/* Get writing time of filesystem. */
grub_err_t (*mtime) (grub_device_t device, grub_int32_t *timebuf);
#ifdef GRUB_UTIL
/* Whether this filesystem reserves first sector for DOS-style boot. */
int reserved_first_sector;
#endif
/* The next filesystem. */
struct grub_fs *next;
};
typedef struct grub_fs *grub_fs_t;
/* This is special, because block lists are not files in usual sense. */
extern struct grub_fs grub_fs_blocklist;
/* This hook is used to automatically load filesystem modules.
If this hook loads a module, return non-zero. Otherwise return zero.
The newly loaded filesystem is assumed to be inserted into the head of
the linked list GRUB_FS_LIST through the function grub_fs_register. */
typedef int (*grub_fs_autoload_hook_t) (void);
extern grub_fs_autoload_hook_t EXPORT_VAR(grub_fs_autoload_hook);
void EXPORT_FUNC(grub_fs_register) (grub_fs_t fs);
void EXPORT_FUNC(grub_fs_unregister) (grub_fs_t fs);
void EXPORT_FUNC(grub_fs_iterate) (int (*hook) (const grub_fs_t fs));
grub_fs_t EXPORT_FUNC(grub_fs_probe) (grub_device_t device);
#endif /* ! GRUB_FS_HEADER */