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Annotation of 43BSDReno/include/dirent.h, revision 1.1

1.1     ! root        1: /*-
        !             2:  * Copyright (c) 1989 The Regents of the University of California.
        !             3:  * All rights reserved.
        !             4:  *
        !             5:  * Redistribution and use in source and binary forms are permitted provided
        !             6:  * that: (1) source distributions retain this entire copyright notice and
        !             7:  * comment, and (2) distributions including binaries display the following
        !             8:  * acknowledgement:  ``This product includes software developed by the
        !             9:  * University of California, Berkeley and its contributors'' in the
        !            10:  * documentation or other materials provided with the distribution and in
        !            11:  * all advertising materials mentioning features or use of this software.
        !            12:  * Neither the name of the University nor the names of its contributors may
        !            13:  * be used to endorse or promote products derived from this software without
        !            14:  * specific prior written permission.
        !            15:  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
        !            16:  * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
        !            17:  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
        !            18:  *
        !            19:  *     @(#)dirent.h    5.13 (Berkeley) 6/24/90
        !            20:  */
        !            21: 
        !            22: #ifndef _DIRENT_
        !            23: #define _DIRENT_
        !            24: 
        !            25: /*
        !            26:  * A directory entry has a struct direct at the front of it, containing its
        !            27:  * inode number, the length of the entry, and the length of the name
        !            28:  * contained in the entry.  These are followed by the name padded to a 4
        !            29:  * byte boundary with null bytes.  All names are guaranteed null terminated.
        !            30:  * The maximum length of a name in a directory is MAXNAMLEN.
        !            31:  */
        !            32: 
        !            33: struct dirent {
        !            34:        u_long  d_fileno;               /* file number of entry */
        !            35:        u_short d_reclen;               /* length of this record */
        !            36:        u_short d_namlen;               /* length of string in d_name */
        !            37: #ifdef _POSIX_SOURCE
        !            38:        char    d_name[255 + 1];        /* name must be no longer than this */
        !            39: #else
        !            40: #define        MAXNAMLEN       255
        !            41:        char    d_name[MAXNAMLEN + 1];  /* name must be no longer than this */
        !            42: #endif
        !            43: };
        !            44: 
        !            45: #ifdef _POSIX_SOURCE
        !            46: typedef void * DIR;
        !            47: #else
        !            48: 
        !            49: #define        d_ino           d_fileno        /* backward compatibility */
        !            50: 
        !            51: /* definitions for library routines operating on directories. */
        !            52: #define        DIRBLKSIZ       1024
        !            53: 
        !            54: /* structure describing an open directory. */
        !            55: typedef struct _dirdesc {
        !            56:        int     dd_fd;          /* file descriptor associated with directory */
        !            57:        long    dd_loc;         /* offset in current buffer */
        !            58:        long    dd_size;        /* amount of data returned by getdirentries */
        !            59:        char    *dd_buf;        /* data buffer */
        !            60:        int     dd_len;         /* size of data buffer */
        !            61:        long    dd_seek;        /* magic cookie returned by getdirentries */
        !            62: } DIR;
        !            63: 
        !            64: #define        dirfd(dirp)     ((dirp)->dd_fd)
        !            65: 
        !            66: #ifndef NULL
        !            67: #define        NULL    0
        !            68: #endif
        !            69: 
        !            70: #endif /* _POSIX_SOURCE */
        !            71: 
        !            72: #if __STDC__ || c_plusplus
        !            73: extern DIR *opendir(const char *);
        !            74: extern struct dirent *readdir(DIR *);
        !            75: extern void rewinddir(DIR *);
        !            76: extern int closedir(DIR *);
        !            77: #ifndef _POSIX_SOURCE
        !            78: extern long telldir(const DIR *);
        !            79: extern void seekdir(DIR *, long);
        !            80: extern int scandir(const char *, struct direct ***,
        !            81:     int (* )(struct direct *), int (* )(void *, void *));
        !            82: extern int alphasort(const void *, const void *);
        !            83: #endif
        !            84: #else
        !            85: extern DIR *opendir();
        !            86: extern struct dirent *readdir();
        !            87: extern void rewinddir();
        !            88: extern int closedir();
        !            89: #ifndef _POSIX_SOURCE
        !            90: extern long telldir();
        !            91: extern void seekdir();
        !            92: extern int scandir();
        !            93: extern int alphasort();
        !            94: #endif
        !            95: #endif
        !            96: #endif /* _DIRENT_ */

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