usr/src/sys/sys/dirent.h

/*-
 * Copyright (c) 1989, 1993
 *      The Regents of the University of California.  All rights reserved.
 *
 * %sccs.include.redist.c%
 *
 *      @(#)dirent.h    8.3 (Berkeley) %G%
 */

/*
 * The dirent structure defines the format of directory entries returned by
 * the getdirentries(2) system call.
 *
 * A directory entry has a struct dirent at the front of it, containing its
 * inode number, the length of the entry, and the length of the name
 * contained in the entry.  These are followed by the name padded to a 4
 * byte boundary with null bytes.  All names are guaranteed null terminated.
 * The maximum length of a name in a directory is MAXNAMLEN.
 */

struct dirent {
        u_int32_t d_fileno;             /* file number of entry */
        u_int16_t d_reclen;             /* length of this record */
        u_int8_t  d_type;               /* file type, see below */
        u_int8_t  d_namlen;             /* length of string in d_name */
#ifdef _POSIX_SOURCE
        char    d_name[255 + 1];        /* name must be no longer than this */
#else
#define MAXNAMLEN       255
        char    d_name[MAXNAMLEN + 1];  /* name must be no longer than this */
#endif
};

/*
 * File types
 */
#define DT_UNKNOWN       0
#define DT_FIFO          1
#define DT_CHR           2
#define DT_DIR           4
#define DT_BLK           6
#define DT_REG           8
#define DT_LNK          10
#define DT_SOCK         12
#define DT_WHT          14

/*
 * Convert between stat structure types and directory types.
 */
#define IFTODT(mode)    (((mode) & 0170000) >> 12)
#define DTTOIF(dirtype) ((dirtype) << 12)