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>
 
#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;
 
#endif
 
/**
 * @}
 */
 

Rev 2526	Rev 2527
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		37
38	#define VFS_FIRST FIRST_USER_METHOD	38	#define VFS_FIRST FIRST_USER_METHOD
39		39
40	#define IPC_METHOD_TO_VFS_OP(m) ((m) - VFS_FIRST)	40	#define IPC_METHOD_TO_VFS_OP(m) ((m) - VFS_FIRST)
41		41
42	typedef enum {	42	typedef enum {
43	VFS_REGISTER = VFS_FIRST,	43	VFS_REGISTER = VFS_FIRST,
44	VFS_MOUNT,	44	VFS_MOUNT,
45	VFS_UNMOUNT,	45	VFS_UNMOUNT,
-		46	VFS_LOOKUP,
46	VFS_OPEN,	47	VFS_OPEN,
47	VFS_CREATE,	48	VFS_CREATE,
48	VFS_CLOSE,	49	VFS_CLOSE,
49	VFS_READ,	50	VFS_READ,
50	VFS_WRITE,	51	VFS_WRITE,
51	VFS_SEEK,	52	VFS_SEEK,
52	VFS_LAST, /* keep this the last member of the enum */	53	VFS_LAST, /* keep this the last member of the enum */
53	} vfs_request_t;	54	} vfs_request_t;
54		55
55		56
56	/**	57	/**
57	* An instance of this structure is associated with a particular FS operation.	58	* An instance of this structure is associated with a particular FS operation.
58	* It tells VFS if the FS supports the operation or maybe if a default one	59	* It tells VFS if the FS supports the operation or maybe if a default one
59	* should be used.	60	* should be used.
60	*/	61	*/
61	typedef enum {	62	typedef enum {
62	VFS_OP_NULL = 0,	63	VFS_OP_NULL = 0,
63	VFS_OP_DEFAULT,	64	VFS_OP_DEFAULT,
64	VFS_OP_DEFINED	65	VFS_OP_DEFINED
65	} vfs_op_t;	66	} vfs_op_t;
66		67
67	#define FS_NAME_MAXLEN 20	68	#define FS_NAME_MAXLEN 20
68		69
69	/**	70	/**
70	* A structure like this is passed to VFS by each individual FS upon its	71	* A structure like this is passed to VFS by each individual FS upon its
71	* registration. It assosiates a human-readable identifier with each	72	* registration. It assosiates a human-readable identifier with each
72	* registered FS. More importantly, through this structure, the FS announces	73	* registered FS. More importantly, through this structure, the FS announces
73	* what operations it supports.	74	* what operations it supports.
74	*/	75	*/
75	typedef struct {	76	typedef struct {
76	/** Unique identifier of the fs. */	77	/** Unique identifier of the fs. */
77	char name[FS_NAME_MAXLEN];	78	char name[FS_NAME_MAXLEN];
78		79
79	/** Operations. */	80	/** Operations. */
80	vfs_op_t ops[VFS_LAST - VFS_FIRST];	81	vfs_op_t ops[VFS_LAST - VFS_FIRST];
81	} vfs_info_t;	82	} vfs_info_t;
82		83
83	typedef struct {	84	typedef struct {
84	link_t fs_link;	85	link_t fs_link;
85	vfs_info_t vfs_info;	86	vfs_info_t vfs_info;
-		87	ipcarg_t phone;
86	} fs_info_t;	88	} fs_info_t;
87		89
88	#endif	90	#endif
89		91
90	/**	92	/**
91	* @}	93	* @}
92	*/	94	*/
93		95

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(root)/branches/dynload/uspace/srv/vfs/vfs.h @ 3674 – Rev 2526 → 2527