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Diffstat (limited to 'sys/sys/dirent.h')
-rw-r--r-- | sys/sys/dirent.h | 100 |
1 files changed, 100 insertions, 0 deletions
diff --git a/sys/sys/dirent.h b/sys/sys/dirent.h new file mode 100644 index 0000000..09ad39c --- /dev/null +++ b/sys/sys/dirent.h @@ -0,0 +1,100 @@ +/* $OpenBSD: dirent.h,v 1.11 2013/12/13 18:09:27 zhuk Exp $ */ +/* $NetBSD: dirent.h,v 1.12 1996/04/09 20:55:25 cgd Exp $ */ + +/*- + * Copyright (c) 1989, 1993 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * @(#)dirent.h 8.3 (Berkeley) 8/10/94 + */ + +#ifndef _SYS_DIRENT_H_ +#define _SYS_DIRENT_H_ + +#include <sys/cdefs.h> + +/* + * The dirent structure defines the format of directory entries returned by + * the getdents(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 { + __ino_t d_fileno; /* file number of entry */ + __off_t d_off; /* offset after this entry */ + __uint16_t d_reclen; /* length of this record */ + __uint8_t d_type; /* file type, see below */ + __uint8_t d_namlen; /* length of string in d_name */ + __uint8_t __d_padding[4]; /* suppress padding after d_name */ +#if __BSD_VISIBLE +#define MAXNAMLEN 255 + char d_name[MAXNAMLEN + 1]; /* name must be no longer than this */ +#else + char d_name[255 + 1]; /* name must be no longer than this */ +#endif +}; + +#if __BSD_VISIBLE +/* + * 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 + +/* + * Convert between stat structure types and directory types. + */ +#define IFTODT(mode) (((mode) & 0170000) >> 12) +#define DTTOIF(dirtype) ((dirtype) << 12) + +#ifdef _KERNEL +/* + * The DIRENT_RECSIZE macro gives the minimum record length which will hold + * a directory entry with a name of the given length, including the terminating + * nul byte, rounded up to proper alignment. + * The DIRENT_SIZE macro does the same when given a pointer to a struct dirent + */ +#define DIRENT_RECSIZE(namelen) \ + ((offsetof(struct dirent, d_name) + (namelen) + 1 + 7) &~ 7) +#define DIRENT_SIZE(dp) \ + DIRENT_RECSIZE((dp)->d_namlen) +#endif + +#endif /* __BSD_VISIBLE */ + +#endif /* _SYS_DIRENT_H_ */ |