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| 2520 | jermar | 1 | /* |
| 2 | * Copyright (c) 2007 Jakub Jermar |
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| 3 | * All rights reserved. |
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| 4 | * |
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| 5 | * Redistribution and use in source and binary forms, with or without |
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| 6 | * modification, are permitted provided that the following conditions |
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| 7 | * are met: |
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| 8 | * |
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| 9 | * - Redistributions of source code must retain the above copyright |
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| 10 | * notice, this list of conditions and the following disclaimer. |
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| 11 | * - Redistributions in binary form must reproduce the above copyright |
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| 12 | * notice, this list of conditions and the following disclaimer in the |
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| 13 | * documentation and/or other materials provided with the distribution. |
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| 14 | * - The name of the author may not be used to endorse or promote products |
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| 15 | * derived from this software without specific prior written permission. |
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| 16 | * |
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| 17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
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| 18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
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| 19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
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| 20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
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| 21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
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| 22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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| 23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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| 24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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| 25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
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| 26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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| 27 | */ |
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| 28 | |||
| 29 | /** @addtogroup fs |
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| 30 | * @{ |
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| 31 | */ |
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| 32 | |||
| 33 | #ifndef VFS_VFS_H_ |
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| 34 | #define VFS_VFS_H_ |
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| 35 | |||
| 2523 | jermar | 36 | #include <ipc/ipc.h> |
| 37 | |||
| 38 | #define VFS_FIRST FIRST_USER_METHOD |
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| 39 | |||
| 2520 | jermar | 40 | typedef enum { |
| 2523 | jermar | 41 | VFS_REGISTER = VFS_FIRST, |
| 2520 | jermar | 42 | VFS_MOUNT, |
| 43 | VFS_UNMOUNT, |
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| 2521 | jermar | 44 | VFS_OPEN, |
| 2523 | jermar | 45 | VFS_CREATE, |
| 46 | VFS_CLOSE, |
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| 47 | VFS_READ, |
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| 48 | VFS_WRITE, |
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| 49 | VFS_SEEK, |
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| 2521 | jermar | 50 | VFS_LAST, /* keep this the last member of the enum */ |
| 2520 | jermar | 51 | } vfs_request_t; |
| 52 | |||
| 2521 | jermar | 53 | |
| 54 | /** |
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| 55 | * An instance of this structure is associated with a particular FS operation. |
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| 56 | * It tells VFS if the FS supports the operation or maybe if a default one |
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| 57 | * should be used. |
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| 58 | */ |
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| 59 | typedef enum { |
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| 2523 | jermar | 60 | VFS_OP_NULL = 0, |
| 2521 | jermar | 61 | VFS_OP_DEFAULT, |
| 62 | VFS_OP_DEFINED |
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| 63 | } vfs_op_t; |
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| 64 | |||
| 65 | #define FS_NAME_MAXLEN 20 |
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| 66 | |||
| 67 | /** |
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| 68 | * A structure like this is passed to VFS by each individual FS upon its |
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| 69 | * registration. It assosiates a human-readable identifier with each |
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| 70 | * registered FS. More importantly, through this structure, the FS announces |
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| 71 | * what operations it supports. |
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| 72 | */ |
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| 73 | typedef struct { |
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| 2523 | jermar | 74 | /** Unique identifier of the fs. */ |
| 75 | char fs_name[FS_NAME_MAXLEN]; |
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| 76 | |||
| 77 | /** Operations. */ |
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| 78 | vfs_op_t ops[VFS_LAST - VFS_FIRST]; |
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| 2521 | jermar | 79 | } vfs_info_t; |
| 80 | |||
| 2520 | jermar | 81 | #endif |
| 82 | |||
| 83 | /** |
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| 84 | * @} |
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| 2523 | jermar | 85 | */ |