WebSVN – HelenOS – Diff – /branches/dynload/uspace/srv/vfs/vfs.h


/*
 * Copyright (c) 2007 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 VFS_VFS_H_
#define VFS_VFS_H_
 
#include <ipc/ipc.h>
#include <libadt/list.h>
 
#define dprintf(...)    printf(__VA_ARGS__)
 
#define VFS_FIRST   FIRST_USER_METHOD
 
#define IPC_METHOD_TO_VFS_OP(m) ((m) - VFS_FIRST)   
 
typedef enum {
    VFS_REGISTER = VFS_FIRST,
    VFS_MOUNT,
    VFS_UNMOUNT,
    VFS_LOOKUP,
    VFS_OPEN,
    VFS_CREATE,
    VFS_CLOSE,
    VFS_READ,
    VFS_WRITE,
    VFS_SEEK,
    VFS_LAST,       /* keep this the last member of the enum */
} vfs_request_t;
 
 
/**
 * An instance of this structure is associated with a particular FS operation.
 * It tells VFS if the FS supports the operation or maybe if a default one
 * should be used.
 */
typedef enum {
    VFS_OP_NULL = 0,
    VFS_OP_DEFAULT,
    VFS_OP_DEFINED
} vfs_op_t;
 
#define FS_NAME_MAXLEN  20
 
/**
 * A structure like this is passed to VFS by each individual FS upon its
 * registration. It assosiates a human-readable identifier with each
 * registered FS. More importantly, through this structure, the FS announces
 * what operations it supports.
 */
typedef struct {
    /** Unique identifier of the fs. */
    char name[FS_NAME_MAXLEN];
   
    /** Operations. */
    vfs_op_t ops[VFS_LAST - VFS_FIRST];
} vfs_info_t;
 
typedef struct {
    link_t fs_link;
    vfs_info_t vfs_info;
    ipcarg_t phone;
} fs_info_t;
 
extern link_t fs_head;
 
extern void vfs_register(ipc_callid_t rid, ipc_call_t *request);
 
#endif
 
/**
 * @}
 */
 

Rev 2529	Rev 2535
1	/*	1	/*
2	* Copyright (c) 2007 Jakub Jermar	2	* Copyright (c) 2007 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 VFS_VFS_H_	33	#ifndef VFS_VFS_H_
34	#define VFS_VFS_H_	34	#define VFS_VFS_H_
35		35
36	#include <ipc/ipc.h>	36	#include <ipc/ipc.h>
37	#include <libadt/list.h>	37	#include <libadt/list.h>
38		38
-		39	#define dprintf(...) printf(__VA_ARGS__)
-		40
39	#define VFS_FIRST FIRST_USER_METHOD	41	#define VFS_FIRST FIRST_USER_METHOD
40		42
41	#define IPC_METHOD_TO_VFS_OP(m) ((m) - VFS_FIRST)	43	#define IPC_METHOD_TO_VFS_OP(m) ((m) - VFS_FIRST)
42		44
43	typedef enum {	45	typedef enum {
44	VFS_REGISTER = VFS_FIRST,	46	VFS_REGISTER = VFS_FIRST,
45	VFS_MOUNT,	47	VFS_MOUNT,
46	VFS_UNMOUNT,	48	VFS_UNMOUNT,
47	VFS_LOOKUP,	49	VFS_LOOKUP,
48	VFS_OPEN,	50	VFS_OPEN,
49	VFS_CREATE,	51	VFS_CREATE,
50	VFS_CLOSE,	52	VFS_CLOSE,
51	VFS_READ,	53	VFS_READ,
52	VFS_WRITE,	54	VFS_WRITE,
53	VFS_SEEK,	55	VFS_SEEK,
54	VFS_LAST, /* keep this the last member of the enum */	56	VFS_LAST, /* keep this the last member of the enum */
55	} vfs_request_t;	57	} vfs_request_t;
56		58
57		59
58	/**	60	/**
59	* An instance of this structure is associated with a particular FS operation.	61	* An instance of this structure is associated with a particular FS operation.
60	* It tells VFS if the FS supports the operation or maybe if a default one	62	* It tells VFS if the FS supports the operation or maybe if a default one
61	* should be used.	63	* should be used.
62	*/	64	*/
63	typedef enum {	65	typedef enum {
64	VFS_OP_NULL = 0,	66	VFS_OP_NULL = 0,
65	VFS_OP_DEFAULT,	67	VFS_OP_DEFAULT,
66	VFS_OP_DEFINED	68	VFS_OP_DEFINED
67	} vfs_op_t;	69	} vfs_op_t;
68		70
69	#define FS_NAME_MAXLEN 20	71	#define FS_NAME_MAXLEN 20
70		72
71	/**	73	/**
72	* A structure like this is passed to VFS by each individual FS upon its	74	* A structure like this is passed to VFS by each individual FS upon its
73	* registration. It assosiates a human-readable identifier with each	75	* registration. It assosiates a human-readable identifier with each
74	* registered FS. More importantly, through this structure, the FS announces	76	* registered FS. More importantly, through this structure, the FS announces
75	* what operations it supports.	77	* what operations it supports.
76	*/	78	*/
77	typedef struct {	79	typedef struct {
78	/** Unique identifier of the fs. */	80	/** Unique identifier of the fs. */
79	char name[FS_NAME_MAXLEN];	81	char name[FS_NAME_MAXLEN];
80		82
81	/** Operations. */	83	/** Operations. */
82	vfs_op_t ops[VFS_LAST - VFS_FIRST];	84	vfs_op_t ops[VFS_LAST - VFS_FIRST];
83	} vfs_info_t;	85	} vfs_info_t;
84		86
85	typedef struct {	87	typedef struct {
86	link_t fs_link;	88	link_t fs_link;
87	vfs_info_t vfs_info;	89	vfs_info_t vfs_info;
88	ipcarg_t phone;	90	ipcarg_t phone;
89	} fs_info_t;	91	} fs_info_t;
90		92
-		93	extern link_t fs_head;
-		94
-		95	extern void vfs_register(ipc_callid_t rid, ipc_call_t *request);
-		96
91	#endif	97	#endif
92		98
93	/**	99	/**
94	* @}	100	* @}
95	*/	101	*/
96		102

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(root)/branches/dynload/uspace/srv/vfs/vfs.h @ 3674 – Rev 2529 → 2535