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/*
* Copyright (c) 1992, 1993
* The Regents of the University of California. All rights reserved.
* Copyright (c) 2000
* Poul-Henning Kamp. All rights reserved.
*
* This code is derived from software donated to Berkeley by
* Jan-Simon Pendry.
*
* 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. 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.
*
* @(#)kernfs.h 8.6 (Berkeley) 3/29/95
* From: FreeBSD: src/sys/miscfs/kernfs/kernfs.h 1.14
*
* $FreeBSD$
*/
#ifndef _FS_DEVFS_DEVFS_H_
#define _FS_DEVFS_DEVFS_H_
#ifdef _KERNEL /* No userland stuff in here... */
/*
* These are default sizes for the DEVFS inode table and the overflow
* table. If the default table overflows we allocate the overflow
* table, the size of which can also be set with a sysctl. If the
* overflow table fills you're toast.
*/
#ifndef NDEVFSINO
#define NDEVFSINO 1024
#endif
#ifndef NDEVFSOVERFLOW
#define NDEVFSOVERFLOW 32768
#endif
/*
* This is the first "per mount" inode, these are used for directories
* and symlinks and the like. Must be larger than the number of "true"
* device nodes and symlinks. It is.
*/
#define DEVFSINOMOUNT 0x2000000
MALLOC_DECLARE(M_DEVFS);
struct devfs_dirent {
int de_inode;
int de_flags;
#define DE_WHITEOUT 0x1
#define DE_DOT 0x2
#define DE_DOTDOT 0x4
struct dirent *de_dirent;
TAILQ_ENTRY(devfs_dirent) de_list;
TAILQ_HEAD(, devfs_dirent) de_dlist;
struct devfs_dirent *de_dir;
int de_links;
mode_t de_mode;
uid_t de_uid;
gid_t de_gid;
struct timespec de_atime;
struct timespec de_mtime;
struct timespec de_ctime;
struct vnode *de_vnode;
char * de_symlink;
};
struct devfs_mount {
struct vnode *dm_root; /* Root node */
struct devfs_dirent *dm_rootdir;
struct devfs_dirent *dm_basedir;
unsigned dm_generation;
struct devfs_dirent *dm_dirent[NDEVFSINO];
struct devfs_dirent **dm_overflow;
int dm_inode;
struct lock dm_lock;
};
/*
* This is what we fill in dm_dirent[N] for a deleted entry.
*/
#define DE_DELETED ((struct devfs_dirent *)sizeof(struct devfs_dirent))
#define VFSTODEVFS(mp) ((struct devfs_mount *)((mp)->mnt_data))
extern vop_t **devfs_vnodeop_p;
extern vop_t **devfs_specop_p;
int devfs_allocv (struct devfs_dirent *de, struct mount *mp, struct vnode **vpp, struct proc *p);
dev_t *devfs_itod (int inode);
struct devfs_dirent **devfs_itode (struct devfs_mount *dm, int inode);
int devfs_populate (struct devfs_mount *dm);
struct devfs_dirent *devfs_newdirent (char *name, int namelen);
void devfs_purge (struct devfs_dirent *dd);
struct devfs_dirent *devfs_vmkdir (char *name, int namelen, struct devfs_dirent *dotdot);
#endif /* _KERNEL */
#endif /* _FS_DEVFS_DEVFS_H_ */
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