1 dirent.h |
1 /*- |
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2 * Copyright (c) 1989, 1993 |
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3 * The Regents of the University of California. 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 * 1. Redistributions of source code must retain the above copyright |
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9 * notice, this list of conditions and the following disclaimer. |
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10 * 2. Redistributions in binary form must reproduce the above copyright |
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11 * notice, this list of conditions and the following disclaimer in the |
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12 * documentation and/or other materials provided with the distribution. |
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13 * 4. Neither the name of the University nor the names of its contributors |
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14 * may be used to endorse or promote products derived from this software |
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15 * without specific prior written permission. |
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16 * |
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17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
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18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
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21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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27 * SUCH DAMAGE. |
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28 * |
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29 * @(#)dirent.h 8.3 (Berkeley) 8/10/94 |
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30 * $FreeBSD: src/sys/sys/dirent.h,v 1.14 2004/04/07 04:19:49 imp Exp $ |
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31 */ |
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32 |
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33 #ifndef _SYS_DIRENT_H_ |
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34 #define _SYS_DIRENT_H_ |
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35 |
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36 #include <sys/cdefs.h> |
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37 #include <sys/_types.h> |
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38 #include <stddef.h> |
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39 |
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40 /* |
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41 * The dirent structure defines the format of directory entries returned by |
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42 * the getdirentries(2) system call. |
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43 * |
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44 * A directory entry has a struct dirent at the front of it, containing its |
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45 * inode number, the length of the entry, and the length of the name |
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46 * contained in the entry. These are followed by the name padded to a 4 |
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47 * byte boundary with null bytes. All names are guaranteed null terminated. |
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48 * The maximum length of a name in a directory is MAXNAMLEN. |
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49 */ |
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50 |
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51 struct dirent { |
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52 __uint32_t d_fileno; /* file number of entry */ |
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53 __uint16_t d_reclen; /* length of this record */ |
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54 __uint8_t d_type; /* file type, see below */ |
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55 __uint8_t d_namlen; /* length of string in d_name */ |
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56 #if __BSD_VISIBLE |
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57 #define MAXNAMLEN 255 |
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58 char d_name[MAXNAMLEN + 1]; /* name must be no longer than this */ |
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59 #else |
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60 char d_name[255 + 1]; /* name must be no longer than this */ |
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61 #endif |
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62 }; |
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63 |
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64 #ifdef __SYMBIAN32__ |
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65 struct wdirent { |
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66 unsigned long d_fileno; |
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67 unsigned short d_namlen; |
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68 wchar_t* d_name; |
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69 }; |
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70 |
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71 typedef struct __EPOC32_WDIR WDIR; |
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72 #endif |
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73 |
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74 |
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75 #if __BSD_VISIBLE |
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76 /* |
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77 * File types |
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78 */ |
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79 #define DT_UNKNOWN 0 |
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80 #define DT_FIFO 1 |
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81 #define DT_CHR 2 |
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82 #define DT_DIR 4 |
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83 #define DT_BLK 6 |
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84 #define DT_REG 8 |
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85 #define DT_LNK 10 |
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86 #define DT_SOCK 12 |
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87 #define DT_WHT 14 |
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88 |
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89 /* |
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90 * Convert between stat structure types and directory types. |
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91 */ |
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92 #define IFTODT(mode) (((mode) & 0170000) >> 12) |
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93 #define DTTOIF(dirtype) ((dirtype) << 12) |
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94 |
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95 /* |
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96 * The _GENERIC_DIRSIZ macro gives the minimum record length which will hold |
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97 * the directory entry. This requires the amount of space in struct direct |
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98 * without the d_name field, plus enough space for the name with a terminating |
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99 * null byte (dp->d_namlen+1), rounded up to a 4 byte boundary. |
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100 * |
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101 * XXX although this macro is in the implementation namespace, it requires |
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102 * a manifest constant that is not. |
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103 */ |
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104 #define _GENERIC_DIRSIZ(dp) \ |
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105 ((sizeof (struct dirent) - (MAXNAMLEN+1)) + (((dp)->d_namlen+1 + 3) &~ 3)) |
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106 #endif /* __BSD_VISIBLE */ |
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107 |
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108 #ifdef _KERNEL |
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109 #define GENERIC_DIRSIZ(dp) _GENERIC_DIRSIZ(dp) |
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110 #endif |
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111 |
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112 #endif /* !_SYS_DIRENT_H_ */ |