Rev 2523 | Rev 2527 | Go to most recent revision | Details | Compare with Previous | Last modification | View Log | RSS feed
| Rev | Author | Line No. | Line |
|---|---|---|---|
| 2520 | jermar | 1 | /* |
| 2 | * Copyright (c) 2007 Jakub Jermar |
||
| 3 | * All rights reserved. |
||
| 4 | * |
||
| 5 | * Redistribution and use in source and binary forms, with or without |
||
| 6 | * modification, are permitted provided that the following conditions |
||
| 7 | * are met: |
||
| 8 | * |
||
| 9 | * - Redistributions of source code must retain the above copyright |
||
| 10 | * notice, this list of conditions and the following disclaimer. |
||
| 11 | * - Redistributions in binary form must reproduce the above copyright |
||
| 12 | * notice, this list of conditions and the following disclaimer in the |
||
| 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 |
||
| 15 | * derived from this software without specific prior written permission. |
||
| 16 | * |
||
| 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 |
||
| 19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
||
| 20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
||
| 21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
||
| 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 |
||
| 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 |
||
| 26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
||
| 27 | */ |
||
| 28 | |||
| 29 | /** @addtogroup fs |
||
| 30 | * @{ |
||
| 31 | */ |
||
| 32 | |||
| 33 | #ifndef VFS_VFS_H_ |
||
| 34 | #define VFS_VFS_H_ |
||
| 35 | |||
| 2523 | jermar | 36 | #include <ipc/ipc.h> |
| 37 | |||
| 38 | #define VFS_FIRST FIRST_USER_METHOD |
||
| 39 | |||
| 2526 | jermar | 40 | #define IPC_METHOD_TO_VFS_OP(m) ((m) - VFS_FIRST) |
| 41 | |||
| 2520 | jermar | 42 | typedef enum { |
| 2523 | jermar | 43 | VFS_REGISTER = VFS_FIRST, |
| 2520 | jermar | 44 | VFS_MOUNT, |
| 45 | VFS_UNMOUNT, |
||
| 2521 | jermar | 46 | VFS_OPEN, |
| 2523 | jermar | 47 | VFS_CREATE, |
| 48 | VFS_CLOSE, |
||
| 49 | VFS_READ, |
||
| 50 | VFS_WRITE, |
||
| 51 | VFS_SEEK, |
||
| 2521 | jermar | 52 | VFS_LAST, /* keep this the last member of the enum */ |
| 2520 | jermar | 53 | } vfs_request_t; |
| 54 | |||
| 2521 | jermar | 55 | |
| 56 | /** |
||
| 57 | * 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 | * should be used. |
||
| 60 | */ |
||
| 61 | typedef enum { |
||
| 2523 | jermar | 62 | VFS_OP_NULL = 0, |
| 2521 | jermar | 63 | VFS_OP_DEFAULT, |
| 64 | VFS_OP_DEFINED |
||
| 65 | } vfs_op_t; |
||
| 66 | |||
| 67 | #define FS_NAME_MAXLEN 20 |
||
| 68 | |||
| 69 | /** |
||
| 70 | * 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 | * registered FS. More importantly, through this structure, the FS announces |
||
| 73 | * what operations it supports. |
||
| 74 | */ |
||
| 75 | typedef struct { |
||
| 2523 | jermar | 76 | /** Unique identifier of the fs. */ |
| 2526 | jermar | 77 | char name[FS_NAME_MAXLEN]; |
| 2523 | jermar | 78 | |
| 79 | /** Operations. */ |
||
| 80 | vfs_op_t ops[VFS_LAST - VFS_FIRST]; |
||
| 2521 | jermar | 81 | } vfs_info_t; |
| 82 | |||
| 2526 | jermar | 83 | typedef struct { |
| 84 | link_t fs_link; |
||
| 85 | vfs_info_t vfs_info; |
||
| 86 | } fs_info_t; |
||
| 87 | |||
| 2520 | jermar | 88 | #endif |
| 89 | |||
| 90 | /** |
||
| 91 | * @} |
||
| 2523 | jermar | 92 | */ |