WebSVN – HelenOS – Diff – /trunk/uspace/srv/fs/fat/fat.h


/*
 * Copyright (c) 2008 Jakub Jermar
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * - Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 * - Redistributions in binary form must reproduce the above copyright
 *   notice, this list of conditions and the following disclaimer in the
 *   documentation and/or other materials provided with the distribution.
 * - The name of the author may not be used to endorse or promote products
 *   derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
 
/** @addtogroup fs
 * @{
 */
 
#ifndef FAT_FAT_H_
#define FAT_FAT_H_
 
#include <ipc/ipc.h>
#include <libfs.h>
#include <atomic.h>
#include <sys/types.h>
#include <bool.h>
#include "../../vfs/vfs.h"
 
#define dprintf(...)    printf(__VA_ARGS__)
 
typedef struct {
    uint8_t     ji[3];      /**< Jump instruction. */
    uint8_t     oem_name[8];
    /* BIOS Parameter Block */
    uint16_t    bps;        /**< Bytes per sector. */
    uint8_t     spc;        /**< Sectors per cluster. */
    uint16_t    rscnt;      /**< Reserved sector count. */
    uint8_t     fatcnt;     /**< Number of FATs. */
    uint16_t    root_ent_max;   /**< Maximum number of root directory
                         entries. */
    uint16_t    totsec16;   /**< Total sectors. 16-bit version. */
    uint8_t     mdesc;      /**< Media descriptor. */
    uint16_t    sec_per_fat;    /**< Sectors per FAT12/FAT16. */
    uint16_t    sec_per_track;  /**< Sectors per track. */
    uint16_t    headcnt;    /**< Number of heads. */
    uint32_t    hidden_sec; /**< Hidden sectors. */
    uint32_t    totseci32;  /**< Total sectors. 32-bit version. */
 
    union {
        struct {
            /* FAT12/FAT16 only: Extended BIOS Parameter Block */
            /** Physical drive number. */
            uint8_t     pdn;
            uint8_t     reserved;
            /** Extended boot signature. */
            uint8_t     ebs;
            /** Serial number. */
            uint32_t    id;
            /** Volume label. */
            uint8_t     label[11];
            /** FAT type. */
            uint8_t     type[8];
            /** Boot code. */
            uint8_t     boot_code[448];
            /** Boot sector signature. */
            uint16_t    signature;
        } __attribute__ ((packed));
        struct {
            /* FAT32 only */
            /** Sectors per FAT. */
            uint32_t    sectors_per_fat;
            /** FAT flags. */
            uint16_t    flags;
            /** Version. */
            uint16_t    version;
            /** Cluster number of root directory. */
            uint32_t    root_cluster;
            /** Sector number of file system information sector. */
            uint16_t    fsinfo_sec;
            /** Sector number of boot sector copy. */
            uint16_t    bscopy_sec;
            uint8_t     reserved1[12];
            /** Physical drive number. */
            uint8_t     pdn;
            uint8_t     reserved2;
            /** Extended boot signature. */
            uint8_t     ebs;
            /** Serial number. */
            uint32_t    id;
            /** Volume label. */
            uint8_t     label[11];
            /** FAT type. */
            uint8_t     type[8];
            /** Boot code. */
            uint8_t     boot_code[420];
            /** Signature. */
            uint16_t    signature;
        } __attribute__ ((packed));
    };
} __attribute__ ((packed)) fat_bs_t;
 
#define FAT_ATTR_RDONLY     (1 << 0)
#define FAT_ATTR_VOLLABEL   (1 << 3)
#define FAT_ATTR_SUBDIR     (1 << 4)
 
typedef struct {
    uint8_t     name[8];
    uint8_t     ext[3];
    uint8_t     attr;
    uint8_t     reserved;
    uint8_t     ctime_fine;
    uint16_t    ctime;
    uint16_t    cdate;
    uint16_t    adate;
    union {
        uint16_t    eaidx;      /* FAT12/FAT16 */
        uint16_t    firstc_hi;  /* FAT32 */
    };
    uint16_t    mtime;
    uint16_t    mdate;
    union {
        uint16_t    firstc;     /* FAT12/FAT16 */
        uint16_t    firstc_lo;  /* FAT32 */
    };
    uint32_t    size;
} __attribute__ ((packed)) fat_dentry_t;
 
typedef enum {
    FAT_DIRECTORY,
    FAT_FILE
} fat_node_type_t;
 
/** FAT in-core node. */
typedef struct {
    fat_node_type_t     type;
    /** VFS index is the node's first allocated cluster. */
    fs_index_t      index;
    dev_handle_t        dev_handle;
    /** FAT in-core node hash table link. */
    link_t          fin_link;
    size_t          size;
    unsigned        lnkcnt;
} fat_node_t;
 
extern fs_reg_t fat_reg;
 
extern void fat_lookup(ipc_callid_t, ipc_call_t *);
 
#endif
 
/**
 * @}
 */
 

Rev 2789	Rev 2793
1	/*	1	/*
2	* Copyright (c) 2008 Jakub Jermar	2	* Copyright (c) 2008 Jakub Jermar
3	* All rights reserved.	3	* All rights reserved.
4	*	4	*
5	* Redistribution and use in source and binary forms, with or without	5	* Redistribution and use in source and binary forms, with or without
6	* modification, are permitted provided that the following conditions	6	* modification, are permitted provided that the following conditions
7	* are met:	7	* are met:
8	*	8	*
9	* - Redistributions of source code must retain the above copyright	9	* - Redistributions of source code must retain the above copyright
10	* notice, this list of conditions and the following disclaimer.	10	* notice, this list of conditions and the following disclaimer.
11	* - Redistributions in binary form must reproduce the above copyright	11	* - Redistributions in binary form must reproduce the above copyright
12	* notice, this list of conditions and the following disclaimer in the	12	* notice, this list of conditions and the following disclaimer in the
13	* documentation and/or other materials provided with the distribution.	13	* documentation and/or other materials provided with the distribution.
14	* - The name of the author may not be used to endorse or promote products	14	* - The name of the author may not be used to endorse or promote products
15	* derived from this software without specific prior written permission.	15	* derived from this software without specific prior written permission.
16	*	16	*
17	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR	17	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES	18	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.	19	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20	* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,	20	* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT	21	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,	22	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY	23	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT	24	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF	25	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.	26	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27	*/	27	*/
28		28
29	/** @addtogroup fs	29	/** @addtogroup fs
30	* @{	30	* @{
31	*/	31	*/
32		32
33	#ifndef FAT_FAT_H_	33	#ifndef FAT_FAT_H_
34	#define FAT_FAT_H_	34	#define FAT_FAT_H_
35		35
36	#include <ipc/ipc.h>	36	#include <ipc/ipc.h>
37	#include <libfs.h>	37	#include <libfs.h>
38	#include <atomic.h>	38	#include <atomic.h>
39	#include <sys/types.h>	39	#include <sys/types.h>
40	#include <bool.h>	40	#include <bool.h>
41	#include "../../vfs/vfs.h"	41	#include "../../vfs/vfs.h"
42		42
43	#define dprintf(...) printf(__VA_ARGS__)	43	#define dprintf(...) printf(__VA_ARGS__)
44		44
45	typedef struct {	45	typedef struct {
46	uint8_t ji[3]; /*< Jump instruction. /	46	uint8_t ji[3]; /*< Jump instruction. /
47	uint8_t oem_name[8];	47	uint8_t oem_name[8];
48	/* BIOS Parameter Block */	48	/* BIOS Parameter Block */
49	uint16_t bps; /*< Bytes per sector. /	49	uint16_t bps; /*< Bytes per sector. /
50	uint8_t spc; /*< Sectors per cluster. /	50	uint8_t spc; /*< Sectors per cluster. /
51	uint16_t rscnt; /*< Reserved sector count. /	51	uint16_t rscnt; /*< Reserved sector count. /
52	uint8_t fatcnt; /*< Number of FATs. /	52	uint8_t fatcnt; /*< Number of FATs. /
53	uint16_t root_ent_max; /**< Maximum number of root directory	53	uint16_t root_ent_max; /**< Maximum number of root directory
54	entries. */	54	entries. */
55	uint16_t totsec16; /*< Total sectors. 16-bit version. /	55	uint16_t totsec16; /*< Total sectors. 16-bit version. /
56	uint8_t mdesc; /*< Media descriptor. /	56	uint8_t mdesc; /*< Media descriptor. /
57	uint16_t sec_per_fat; /*< Sectors per FAT12/FAT16. /	57	uint16_t sec_per_fat; /*< Sectors per FAT12/FAT16. /
58	uint16_t sec_per_track; /*< Sectors per track. /	58	uint16_t sec_per_track; /*< Sectors per track. /
59	uint16_t headcnt; /*< Number of heads. /	59	uint16_t headcnt; /*< Number of heads. /
60	uint32_t hidden_sec; /*< Hidden sectors. /	60	uint32_t hidden_sec; /*< Hidden sectors. /
61	uint32_t totseci32; /*< Total sectors. 32-bit version. /	61	uint32_t totseci32; /*< Total sectors. 32-bit version. /
62		62
63	union {	63	union {
64	struct {	64	struct {
65	/* FAT12/FAT16 only: Extended BIOS Parameter Block */	65	/* FAT12/FAT16 only: Extended BIOS Parameter Block */
66	/** Physical drive number. */	66	/** Physical drive number. */
67	uint8_t pdn;	67	uint8_t pdn;
68	uint8_t reserved;	68	uint8_t reserved;
69	/** Extended boot signature. */	69	/** Extended boot signature. */
70	uint8_t ebs;	70	uint8_t ebs;
71	/** Serial number. */	71	/** Serial number. */
72	uint32_t id;	72	uint32_t id;
73	/** Volume label. */	73	/** Volume label. */
74	uint8_t label[11];	74	uint8_t label[11];
75	/** FAT type. */	75	/** FAT type. */
76	uint8_t type[8];	76	uint8_t type[8];
77	/** Boot code. */	77	/** Boot code. */
78	uint8_t boot_code[448];	78	uint8_t boot_code[448];
79	/** Boot sector signature. */	79	/** Boot sector signature. */
80	uint16_t signature;	80	uint16_t signature;
81	} __attribute__ ((packed));	81	} __attribute__ ((packed));
82	struct {	82	struct {
83	/* FAT32 only */	83	/* FAT32 only */
84	/** Sectors per FAT. */	84	/** Sectors per FAT. */
85	uint32_t sectors_per_fat;	85	uint32_t sectors_per_fat;
86	/** FAT flags. */	86	/** FAT flags. */
87	uint16_t flags;	87	uint16_t flags;
88	/** Version. */	88	/** Version. */
89	uint16_t version;	89	uint16_t version;
90	/** Cluster number of root directory. */	90	/** Cluster number of root directory. */
91	uint32_t root_cluster;	91	uint32_t root_cluster;
92	/** Sector number of file system information sector. */	92	/** Sector number of file system information sector. */
93	uint16_t fsinfo_sec;	93	uint16_t fsinfo_sec;
94	/** Sector number of boot sector copy. */	94	/** Sector number of boot sector copy. */
95	uint16_t bscopy_sec;	95	uint16_t bscopy_sec;
96	uint8_t reserved1[12];	96	uint8_t reserved1[12];
97	/** Physical drive number. */	97	/** Physical drive number. */
98	uint8_t pdn;	98	uint8_t pdn;
99	uint8_t reserved2;	99	uint8_t reserved2;
100	/** Extended boot signature. */	100	/** Extended boot signature. */
101	uint8_t ebs;	101	uint8_t ebs;
102	/** Serial number. */	102	/** Serial number. */
103	uint32_t id;	103	uint32_t id;
104	/** Volume label. */	104	/** Volume label. */
105	uint8_t label[11];	105	uint8_t label[11];
106	/** FAT type. */	106	/** FAT type. */
107	uint8_t type[8];	107	uint8_t type[8];
108	/** Boot code. */	108	/** Boot code. */
109	uint8_t boot_code[420];	109	uint8_t boot_code[420];
110	/** Signature. */	110	/** Signature. */
111	uint16_t signature;	111	uint16_t signature;
112	} __attribute__ ((packed));	112	} __attribute__ ((packed));
113	};	113	};
114	} __attribute__ ((packed)) fat_bs_t;	114	} __attribute__ ((packed)) fat_bs_t;
115		115
-		116	#define FAT_ATTR_RDONLY (1 << 0)
-		117	#define FAT_ATTR_VOLLABEL (1 << 3)
-		118	#define FAT_ATTR_SUBDIR (1 << 4)
-		119
116	typedef struct {	120	typedef struct {
117	uint8_t name[8];	121	uint8_t name[8];
118	uint8_t ext[3];	122	uint8_t ext[3];
119	uint8_t attr;	123	uint8_t attr;
120	uint8_t reserved;	124	uint8_t reserved;
121	uint8_t ctime_fine;	125	uint8_t ctime_fine;
122	uint16_t ctime;	126	uint16_t ctime;
123	uint16_t cdate;	127	uint16_t cdate;
124	uint16_t adate;	128	uint16_t adate;
125	union {	129	union {
126	uint16_t eaidx; /* FAT12/FAT16 */	130	uint16_t eaidx; /* FAT12/FAT16 */
127	uint16_t firstc_hi; /* FAT32 */	131	uint16_t firstc_hi; /* FAT32 */
128	};	132	};
129	uint16_t mtime;	133	uint16_t mtime;
130	uint16_t mdate;	134	uint16_t mdate;
131	union {	135	union {
132	uint16_t firstc; /* FAT12/FAT16 */	136	uint16_t firstc; /* FAT12/FAT16 */
133	uint16_t firstc_lo; /* FAT32 */	137	uint16_t firstc_lo; /* FAT32 */
134	};	138	};
135	uint32_t size;	139	uint32_t size;
136	} __attribute__ ((packed)) fat_dentry_t;	140	} __attribute__ ((packed)) fat_dentry_t;
137		141
138	typedef enum {	142	typedef enum {
139	FAT_DIRECTORY,	143	FAT_DIRECTORY,
140	FAT_FILE	144	FAT_FILE
141	} fat_node_type_t;	145	} fat_node_type_t;
142		146
143	/** FAT in-core node. */	147	/** FAT in-core node. */
144	typedef struct {	148	typedef struct {
145	fat_node_type_t type;	149	fat_node_type_t type;
146	/** VFS index is the node's first allocated cluster. */	150	/** VFS index is the node's first allocated cluster. */
147	fs_index_t index;	151	fs_index_t index;
148	dev_handle_t dev_handle;	152	dev_handle_t dev_handle;
149	/** FAT in-core node hash table link. */	153	/** FAT in-core node hash table link. */
150	link_t fin_link;	154	link_t fin_link;
151	size_t size;	155	size_t size;
152	unsigned lnkcnt;	156	unsigned lnkcnt;
153	} fat_node_t;	157	} fat_node_t;
154		158
155	extern fs_reg_t fat_reg;	159	extern fs_reg_t fat_reg;
156		160
157	extern void fat_lookup(ipc_callid_t, ipc_call_t *);	161	extern void fat_lookup(ipc_callid_t, ipc_call_t *);
158		162
159	#endif	163	#endif
160		164
161	/**	165	/**
162	* @}	166	* @}
163	*/	167	*/
164		168

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(root)/trunk/uspace/srv/fs/fat/fat.h – Rev 2789 → 2793