[u-boot.git] / fs / fdos / fdos.h

/*
 * (C) Copyright 2002
 * Stäubli Faverges - <www.staubli.com>
 * Pierre AUBERT  [email protected]
 *
 * See file CREDITS for list of people who contributed to this
 * project.
 *
 * 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 2 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, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
 * MA 02111-1307 USA
 */

#ifndef _FDOS_H_
#define _FDOS_H_


#undef	FDOS_DEBUG

#ifdef	FDOS_DEBUG
#define	PRINTF(fmt,args...)	printf (fmt ,##args)
#else
#define PRINTF(fmt,args...)
#endif

/* Data structure describing media                                           */
typedef struct fs
{
    unsigned long       tot_sectors;

    int                 cluster_size;
    int                 num_clus;

    int                 fat_start;
    int                 fat_len;
    int                 nb_fat;
    int                 num_fat;

    int                 dir_start;
    int                 dir_len;

    unsigned char       *fat_buf;

} Fs_t;

/* Data structure describing one file system slot                            */
typedef struct slot {
    int (*map) (struct fs *fs,
		struct slot *file,
		int where,
		int *len);
    unsigned long FileSize;

    unsigned short int FirstAbsCluNr;
    unsigned short int PreviousAbsCluNr;
    unsigned short int PreviousRelCluNr;

    Directory_t dir;
} Slot_t;

typedef struct file {
    char                *name;
    int                 Case;
    Fs_t                *fs;
    Slot_t              subdir;
    Slot_t              file;
} File_t;


/* dev.c                                                                     */
int dev_read (void *buffer, int where, int len);
int dev_open (void);
int check_dev (BootSector_t *boot, Fs_t *fs);

/* fat.c                                                                     */
unsigned int fat_decode (Fs_t *fs, unsigned int num);
int read_fat (BootSector_t *boot, Fs_t *fs);

/* vfat.c                                                                    */
int vfat_lookup (Slot_t *dir,
		 Fs_t *fs,
		 Directory_t *dirent,
		 int *entry,
		 int *vfat_start,
		 char *filename,
		 int flags,
		 char *outname,
		 Slot_t *file);

/* subdir.c                                                                  */
char *basename (char *name);
int open_subdir (File_t *desc);
int open_file (Slot_t *file, Directory_t *dir);
int read_file (Fs_t *fs,
	       Slot_t *file,
	       char *buf,
	       int where,
	       int len);
void init_subdir (void);

/* fs.c                                                                      */
int fs_init (Fs_t *fs);


#endif
Commit	Line	Data
2262cfee WD	1	/*
2262cfee WD	2	* (C) Copyright 2002
fa82f871	3	* Stäubli Faverges - <www.staubli.com>
2262cfee WD	4	* Pierre AUBERT [email protected]
	5	*
	6	* See file CREDITS for list of people who contributed to this
	7	* project.
	8	*
	9	* This program is free software; you can redistribute it and/or
	10	* modify it under the terms of the GNU General Public License as
	11	* published by the Free Software Foundation; either version 2 of
	12	* the License, or (at your option) any later version.
	13	*
	14	* This program is distributed in the hope that it will be useful,
	15	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	16	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	17	* GNU General Public License for more details.
	18	*
	19	* You should have received a copy of the GNU General Public License
	20	* along with this program; if not, write to the Free Software
	21	* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
	22	* MA 02111-1307 USA
	23	*/
	24
	25	#ifndef _FDOS_H_
	26	#define _FDOS_H_
	27
	28
	29	#undef FDOS_DEBUG
	30
	31	#ifdef FDOS_DEBUG
	32	#define PRINTF(fmt,args...) printf (fmt ,##args)
	33	#else
	34	#define PRINTF(fmt,args...)
	35	#endif
	36
	37	/* Data structure describing media */
	38	typedef struct fs
	39	{
	40	unsigned long tot_sectors;
	41
	42	int cluster_size;
	43	int num_clus;
8bde7f77	44
2262cfee WD	45	int fat_start;
	46	int fat_len;
	47	int nb_fat;
	48	int num_fat;
8bde7f77	49
2262cfee WD	50	int dir_start;
	51	int dir_len;
	52
	53	unsigned char *fat_buf;
8bde7f77	54
2262cfee WD	55	} Fs_t;
	56
	57	/* Data structure describing one file system slot */
	58	typedef struct slot {
	59	int (map) (struct fs fs,
8bde7f77 WD	60	struct slot *file,
	61	int where,
	62	int *len);
2262cfee WD	63	unsigned long FileSize;
	64
	65	unsigned short int FirstAbsCluNr;
	66	unsigned short int PreviousAbsCluNr;
	67	unsigned short int PreviousRelCluNr;
	68
	69	Directory_t dir;
	70	} Slot_t;
	71
	72	typedef struct file {
	73	char *name;
	74	int Case;
	75	Fs_t *fs;
	76	Slot_t subdir;
	77	Slot_t file;
	78	} File_t;
	79
	80
	81	/* dev.c */
	82	int dev_read (void *buffer, int where, int len);
	83	int dev_open (void);
	84	int check_dev (BootSector_t boot, Fs_t fs);
	85
	86	/* fat.c */
	87	unsigned int fat_decode (Fs_t *fs, unsigned int num);
	88	int read_fat (BootSector_t boot, Fs_t fs);
	89
	90	/* vfat.c */
	91	int vfat_lookup (Slot_t *dir,
8bde7f77 WD	92	Fs_t *fs,
	93	Directory_t *dirent,
	94	int *entry,
	95	int *vfat_start,
	96	char *filename,
	97	int flags,
	98	char *outname,
	99	Slot_t *file);
2262cfee WD	100
	101	/* subdir.c */
	102	char basename (char name);
	103	int open_subdir (File_t *desc);
	104	int open_file (Slot_t file, Directory_t dir);
	105	int read_file (Fs_t *fs,
8bde7f77 WD	106	Slot_t *file,
	107	char *buf,
	108	int where,
	109	int len);
2262cfee WD	110	void init_subdir (void);
	111
	112	/* fs.c */
	113	int fs_init (Fs_t *fs);
	114
	115
	116	#endif