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| 2 | pj | 1 | /* |
| 2 | * Project: HARTIK (HA-rd R-eal TI-me K-ernel) |
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| 3 | * |
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| 4 | * Coordinators: Giorgio Buttazzo <giorgio@sssup.it> |
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| 5 | * Gerardo Lamastra <gerardo@sssup.it> |
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| 6 | * |
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| 7 | * Authors : Massimiliano Giorgi <massy@hartik.sssup.it> |
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| 8 | * (see authors.txt for full list of hartik's authors) |
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| 9 | * |
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| 10 | * ReTiS Lab (Scuola Superiore S.Anna - Pisa - Italy) |
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| 11 | * |
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| 12 | * http://www.sssup.it |
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| 13 | * http://retis.sssup.it |
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| 14 | * http://hartik.sssup.it |
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| 15 | */ |
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| 16 | |||
| 17 | /* |
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| 18 | * Copyright (C) 1999 Massimiliano Giorgi |
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| 19 | * |
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| 20 | * This program is free software; you can redistribute it and/or modify |
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| 21 | * it under the terms of the GNU General Public License as published by |
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| 22 | * the Free Software Foundation; either version 2 of the License, or |
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| 23 | * (at your option) any later version. |
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| 24 | * |
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| 25 | * This program is distributed in the hope that it will be useful, |
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| 26 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 27 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 28 | * GNU General Public License for more details. |
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| 29 | * |
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| 30 | * You should have received a copy of the GNU General Public License |
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| 31 | * along with this program; if not, write to the Free Software |
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| 32 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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| 33 | * |
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| 34 | */ |
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| 35 | |||
| 36 | /* |
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| 37 | * CVS : $Id: devfs_s.c,v 1.1.1.1 2002-03-29 14:12:50 pj Exp $ |
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| 38 | * |
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| 39 | * File: $File$ |
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| 40 | * Revision: $Revision: 1.1.1.1 $ |
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| 41 | * Last update: $Date: 2002-03-29 14:12:50 $ |
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| 42 | */ |
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| 43 | |||
| 44 | #include <fs/util.h> |
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| 45 | #include <fs/types.h> |
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| 46 | #include <fs/stat.h> |
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| 47 | #include <fs/fsinit.h> |
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| 48 | #include <fs/fsind.h> |
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| 49 | |||
| 50 | #include "dcache.h" |
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| 51 | #include "fs.h" |
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| 52 | |||
| 53 | static struct super_block *devfs_read_super(__dev_t dev, __uint8_t fs_ind); |
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| 54 | |||
| 55 | static struct file_system_type devfs= |
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| 56 | {"devfs",0,FS_MSDOS,devfs_read_super}; |
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| 57 | |||
| 58 | int devfs_fs_init(FILESYSTEM_PARMS *ptr) |
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| 59 | { |
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| 60 | filesystem_register(&devfs); |
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| 61 | return 0; |
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| 62 | } |
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| 63 | |||
| 64 | |||
| 65 | /*-----------------------------------------*/ |
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| 66 | |||
| 67 | /* |
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| 68 | * |
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| 69 | * Super operations |
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| 70 | * |
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| 71 | */ |
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| 72 | |||
| 73 | static int devfs_read_inode(struct inode *in); |
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| 74 | static int devfsrite_inode(struct inode *in); |
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| 75 | |||
| 76 | static struct super_operations devfs_super_operations={ |
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| 77 | devfs_read_inode, |
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| 78 | devfs_write_inode |
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| 79 | }; |
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| 80 | |||
| 81 | static int msdos_read_inode(struct inode *in) |
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| 82 | { |
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| 83 | struct directoryentry *den; |
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| 84 | dcache_t *ptr; |
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| 85 | __uint16_t cluster; |
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| 86 | __uint32_t lsector; |
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| 87 | __uint16_t deoffs,offs; |
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| 88 | |||
| 89 | /*i_sb gia' messo*/ |
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| 90 | /*i_ino gia' messo*/ |
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| 91 | |||
| 92 | den=(struct directoryentry *)(ptr->buffer)+offs; |
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| 93 | |||
| 94 | in->i_dev=in->i_sb->sb_dev; |
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| 95 | in->i_mode=__S_IRWXO|__S_IRWXG|__S_IRWXU; |
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| 96 | in->i_mode|=__S_IFREG); |
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| 97 | in->i_nlink=1; |
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| 98 | in->i_uid=0; |
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| 99 | in->i_gid=0; |
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| 100 | in->i_rdev=0; |
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| 101 | in->i_size=den->size; |
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| 102 | in->i_atime=in->i_mtime=in->i_ctime=0; |
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| 103 | in->i_op=&devfs_inode_operations; |
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| 104 | |||
| 105 | return 0; |
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| 106 | } |
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| 107 | |||
| 108 | static int msdos_write_inode(struct inode *in) |
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| 109 | { |
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| 110 | return -1; |
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| 111 | } |
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| 112 | |||
| 113 | /* |
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| 114 | * |
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| 115 | * Mount operation |
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| 116 | * |
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| 117 | */ |
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| 118 | |||
| 119 | static struct super_block *devfs_read_super(__dev_t dev, __uint8_t fs_ind) |
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| 120 | { |
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| 121 | struct inode *in; |
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| 122 | struct bootrecord *br; |
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| 123 | struct super_block *sb; |
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| 124 | dcache_t *dc; |
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| 125 | int res; |
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| 126 | |||
| 127 | sb=super_getblock(); |
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| 128 | if (sb==NULL) { |
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| 129 | dcache_unlock(dc); |
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| 130 | return NULL; |
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| 131 | } |
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| 132 | |||
| 133 | sb->sb_dev=dev; |
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| 134 | //sb->sb_op=&devfs_super_operations; |
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| 135 | //sb->sb_dop=&devfs_dentry_operations; |
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| 136 | |||
| 137 | in=inode_get(); |
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| 138 | if (in==NULL) { |
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| 139 | super_freeblock(sb); |
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| 140 | return NULL; |
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| 141 | } |
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| 142 | |||
| 143 | sb->sb_root=in; |
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| 144 | in->i_sb=sb; |
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| 145 | in->i_ino=0; /* ??? */ |
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| 146 | |||
| 147 | return sb; |
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| 148 | } |