| 1 | /* |
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| 2 | * shared_dirent.h - Shared structure used by the opendir() / readdir() / closedir() syscalls. |
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| 3 | * |
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| 4 | * Author Alain Greiner (2016,2017,2018) |
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| 5 | * |
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| 6 | * Copyright (c) UPMC Sorbonne Universites |
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| 7 | * |
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| 8 | * This file is part of ALMOS-MKH. |
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| 9 | * |
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| 10 | * ALMOS-MKH is free software; you can redistribute it and/or modify it |
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| 11 | * under the terms of the GNU General Public License as published by |
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| 12 | * the Free Software Foundation; version 2.0 of the License. |
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| 13 | * |
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| 14 | * ALMOS-MKH is distributed in the hope that it will be useful, but |
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| 15 | * WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 17 | * General Public License for more details. |
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| 18 | * |
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| 19 | * You should have received a copy of the GNU General Public License |
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| 20 | * along with ALMOS-MKH; if not, write to the Free Software Foundation, |
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| 21 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
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| 22 | */ |
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| 23 | |
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| 24 | #ifndef _SHARED_DIRENT_H_ |
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| 25 | #define _SHARED_DIRENT_H_ |
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| 26 | |
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| 27 | /******************************************************************************************* |
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| 28 | * This enum defines the possible types for a dirent inode in a dirent structure. |
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| 29 | * |
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| 30 | * WARNING : these types must be kept consistent with inode types in <vfs.h> file. |
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| 31 | * and with types in <shared_stat.h> file. |
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| 32 | ******************************************************************************************/ |
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| 33 | |
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| 34 | typedef enum |
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| 35 | { |
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| 36 | DT_REG = 0, /*! regular file */ |
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| 37 | DT_DIR = 1, /*! directory */ |
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| 38 | DT_FIFO = 2, /*! named pipe (FIFO) */ |
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| 39 | DT_PIPE = 3, /*! anonymous pipe */ |
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| 40 | DT_SOCK = 4, /*! socket */ |
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| 41 | DT_CHR = 5, /*! character device */ |
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| 42 | DT_BLK = 6, /*! block device */ |
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| 43 | DT_LNK = 7, /*! symbolic link */ |
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| 44 | DT_UNKNOWN = 8, /*! undetermined type */ |
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| 45 | } |
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| 46 | dirent_type_t; |
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| 47 | |
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| 48 | /******************************************************************************************* |
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| 49 | * This defines the actual ALMOS-MKH implementation of the DIR user type. |
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| 50 | ******************************************************************************************/ |
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| 51 | |
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| 52 | typedef unsigned int DIR; |
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| 53 | |
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| 54 | /******************************************************************************************* |
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| 55 | * This structure defines the informations returned to user by the readdir() syscall. |
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| 56 | * |
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| 57 | * WARNING: sizeof(dirent) must be 64 bytes. |
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| 58 | ******************************************************************************************/ |
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| 59 | |
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| 60 | struct dirent |
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| 61 | { |
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| 62 | int d_ino; /*! inode identifier */ |
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| 63 | int d_type; /*! inode type */ |
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| 64 | char d_name[48]; /*! dentry name */ |
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| 65 | char padding[64 - 48 - (2*sizeof(int))]; |
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| 66 | }; |
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| 67 | |
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| 68 | #endif |
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