diff options
Diffstat (limited to 'stage2/dir.h')
| -rw-r--r-- | stage2/dir.h | 147 |
1 files changed, 0 insertions, 147 deletions
diff --git a/stage2/dir.h b/stage2/dir.h deleted file mode 100644 index 287bf60..0000000 --- a/stage2/dir.h +++ /dev/null @@ -1,147 +0,0 @@ - -/* - * Mach Operating System - * Copyright (c) 1991,1990 Carnegie Mellon University - * All Rights Reserved. - * - * Permission to use, copy, modify and distribute this software and its - * documentation is hereby granted, provided that both the copyright - * notice and this permission notice appear in all copies of the - * software, derivative works or modified versions, and any portions - * thereof, and that both notices appear in supporting documentation. - * - * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" - * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR - * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. - * - * Carnegie Mellon requests users of this software to return to - * - * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU - * School of Computer Science - * Carnegie Mellon University - * Pittsburgh PA 15213-3890 - * - * any improvements or extensions that they make and grant Carnegie Mellon - * the rights to redistribute these changes. - */ -/* - * Copyright (c) 1982, 1986, 1989 The Regents of the University of California. - * All rights reserved. - * - * Redistribution and use in source and binary forms are permitted - * provided that the above copyright notice and this paragraph are - * duplicated in all such forms and that any documentation, - * advertising materials, and other materials related to such - * distribution and use acknowledge that the software was developed - * by the University of California, Berkeley. The name of the - * University may not be used to endorse or promote products derived - * from this software without specific prior written permission. - * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR - * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED - * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. - * - * @(#)dir.h 7.6 (Berkeley) 5/9/89 - */ - -#ifndef _BOOT_UFS_DIR_H_ -#define _BOOT_UFS_DIR_H_ - -/* - * A directory consists of some number of blocks of DIRBLKSIZ - * bytes, where DIRBLKSIZ is chosen such that it can be transferred - * to disk in a single atomic operation (e.g. 512 bytes on most machines). - * - * Each DIRBLKSIZ byte block contains some number of directory entry - * structures, which are of variable length. Each directory entry has - * a struct direct 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. - * - * The macro DIRSIZ(dp) gives the amount of space required to represent - * a directory entry. Free space in a directory is represented by - * entries which have dp->d_reclen > DIRSIZ(dp). All DIRBLKSIZ bytes - * in a directory block are claimed by the directory entries. This - * usually results in the last entry in a directory having a large - * dp->d_reclen. When entries are deleted from a directory, the - * space is returned to the previous entry in the same directory - * block by increasing its dp->d_reclen. If the first entry of - * a directory block is free, then its dp->d_ino is set to 0. - * Entries other than the first in a directory do not normally have - * dp->d_ino set to 0. - */ -#define DIRBLKSIZ DEV_BSIZE -#define MAXNAMLEN 255 - -struct direct - { - u_int d_ino; /* inode number of entry */ - u_short d_reclen; /* length of this record */ - u_short d_namlen; /* length of string in d_name */ - char d_name[MAXNAMLEN + 1]; /* name with length <= MAXNAMLEN */ - }; - -/* - * The DIRSIZ macro gives the minimum record length which will hold - * the directory entry. This requires the amount of space in struct direct - * without the d_name field, plus enough space for the name with a terminating - * null byte (dp->d_namlen+1), rounded up to a 4 byte boundary. - */ -#undef DIRSIZ -#define DIRSIZ(dp) \ - ((sizeof (struct direct) - (MAXNAMLEN+1)) + (((dp)->d_namlen+1 + 3) &~ 3)) - -#ifdef KERNEL -/* - * Template for manipulating directories. - * Should use struct direct's, but the name field - * is MAXNAMLEN - 1, and this just won't do. - */ -struct dirtemplate - { - u_int dot_ino; - short dot_reclen; - short dot_namlen; - char dot_name[4]; /* must be multiple of 4 */ - u_int dotdot_ino; - short dotdot_reclen; - short dotdot_namlen; - char dotdot_name[4]; /* ditto */ - }; -#endif - -/* - * The following information should be obtained from <dirent.h> - * and is provided solely (and temporarily) for backward compatibility. - */ -#ifndef KERNEL -#define d_fileno d_ino /* compatibility with POSIX */ -#ifndef DEV_BSIZE -#define DEV_BSIZE 512 -#endif -/* - * Definitions for library routines operating on directories. - */ -typedef struct _dirdesc - { - int dd_fd; - int dd_loc; - int dd_size; - char dd_buf[DIRBLKSIZ]; - } -DIR; - -#define dirfd(dirp) ((dirp)->dd_fd) - -#ifndef NULL -#define NULL 0 -#endif -extern DIR *opendir (); -extern struct direct *readdir (); -extern int telldir (); -extern void seekdir (); -#define rewinddir(dirp) seekdir((dirp), (long)0) -extern void closedir (); -#endif /* not KERNEL */ -#endif /* _BOOT_UFS_DIR_H_ */ |