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| Rev | Author | Line No. | Line |
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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> |
| 2529 | jermar | 37 | #include <libadt/list.h> |
| 2523 | jermar | 38 | |
| 39 | #define VFS_FIRST FIRST_USER_METHOD |
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| 40 | |||
| 2526 | jermar | 41 | #define IPC_METHOD_TO_VFS_OP(m) ((m) - VFS_FIRST) |
| 42 | |||
| 2520 | jermar | 43 | typedef enum { |
| 2523 | jermar | 44 | VFS_REGISTER = VFS_FIRST, |
| 2520 | jermar | 45 | VFS_MOUNT, |
| 46 | VFS_UNMOUNT, |
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| 2527 | jermar | 47 | VFS_LOOKUP, |
| 2521 | jermar | 48 | VFS_OPEN, |
| 2523 | jermar | 49 | VFS_CREATE, |
| 50 | VFS_CLOSE, |
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| 51 | VFS_READ, |
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| 52 | VFS_WRITE, |
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| 53 | VFS_SEEK, |
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| 2521 | jermar | 54 | VFS_LAST, /* keep this the last member of the enum */ |
| 2520 | jermar | 55 | } vfs_request_t; |
| 56 | |||
| 2521 | jermar | 57 | |
| 58 | /** |
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| 59 | * An instance of this structure is associated with a particular FS operation. |
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| 60 | * It tells VFS if the FS supports the operation or maybe if a default one |
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| 61 | * should be used. |
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| 62 | */ |
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| 63 | typedef enum { |
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| 2523 | jermar | 64 | VFS_OP_NULL = 0, |
| 2521 | jermar | 65 | VFS_OP_DEFAULT, |
| 66 | VFS_OP_DEFINED |
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| 67 | } vfs_op_t; |
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| 68 | |||
| 69 | #define FS_NAME_MAXLEN 20 |
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| 70 | |||
| 71 | /** |
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| 72 | * A structure like this is passed to VFS by each individual FS upon its |
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| 73 | * registration. It assosiates a human-readable identifier with each |
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| 74 | * registered FS. More importantly, through this structure, the FS announces |
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| 75 | * what operations it supports. |
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| 76 | */ |
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| 77 | typedef struct { |
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| 2523 | jermar | 78 | /** Unique identifier of the fs. */ |
| 2526 | jermar | 79 | char name[FS_NAME_MAXLEN]; |
| 2523 | jermar | 80 | |
| 81 | /** Operations. */ |
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| 82 | vfs_op_t ops[VFS_LAST - VFS_FIRST]; |
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| 2521 | jermar | 83 | } vfs_info_t; |
| 84 | |||
| 2526 | jermar | 85 | typedef struct { |
| 86 | link_t fs_link; |
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| 87 | vfs_info_t vfs_info; |
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| 2527 | jermar | 88 | ipcarg_t phone; |
| 2526 | jermar | 89 | } fs_info_t; |
| 90 | |||
| 2520 | jermar | 91 | #endif |
| 92 | |||
| 93 | /** |
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| 94 | * @} |
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| 2523 | jermar | 95 | */ |