127 lines
4.2 KiB
C
127 lines
4.2 KiB
C
/* $NetBSD: specdev.h,v 1.14 1996/09/07 12:41:20 mycroft Exp $ */
|
|
|
|
/*
|
|
* Copyright (c) 1990, 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. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed by the University of
|
|
* California, Berkeley and its contributors.
|
|
* 4. 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.
|
|
*
|
|
* @(#)specdev.h 8.3 (Berkeley) 8/10/94
|
|
*/
|
|
|
|
/*
|
|
* This structure defines the information maintained about
|
|
* special devices. It is allocated in checkalias and freed
|
|
* in vgone.
|
|
*/
|
|
struct specinfo {
|
|
struct vnode **si_hashchain;
|
|
struct vnode *si_specnext;
|
|
long si_flags;
|
|
dev_t si_rdev;
|
|
};
|
|
/*
|
|
* Exported shorthand
|
|
*/
|
|
#define v_rdev v_specinfo->si_rdev
|
|
#define v_hashchain v_specinfo->si_hashchain
|
|
#define v_specnext v_specinfo->si_specnext
|
|
#define v_specflags v_specinfo->si_flags
|
|
|
|
/*
|
|
* Flags for specinfo
|
|
*/
|
|
#define SI_MOUNTEDON 0x0001 /* block special device is mounted on */
|
|
|
|
/*
|
|
* Special device management
|
|
*/
|
|
#define SPECHSZ 64
|
|
#if ((SPECHSZ&(SPECHSZ-1)) == 0)
|
|
#define SPECHASH(rdev) (((rdev>>5)+(rdev))&(SPECHSZ-1))
|
|
#else
|
|
#define SPECHASH(rdev) (((unsigned)((rdev>>5)+(rdev)))%SPECHSZ)
|
|
#endif
|
|
|
|
struct vnode *speclisth[SPECHSZ];
|
|
|
|
/*
|
|
* Prototypes for special file operations on vnodes.
|
|
*/
|
|
extern int (**spec_vnodeop_p) __P((void *));
|
|
struct nameidata;
|
|
struct componentname;
|
|
struct ucred;
|
|
struct flock;
|
|
struct buf;
|
|
struct uio;
|
|
|
|
int spec_lookup __P((void *));
|
|
#define spec_create genfs_badop
|
|
#define spec_mknod genfs_badop
|
|
int spec_open __P((void *));
|
|
int spec_close __P((void *));
|
|
#define spec_access genfs_ebadf
|
|
#define spec_getattr genfs_ebadf
|
|
#define spec_setattr genfs_ebadf
|
|
int spec_read __P((void *));
|
|
int spec_write __P((void *));
|
|
#define spec_lease_check genfs_nullop
|
|
int spec_ioctl __P((void *));
|
|
int spec_poll __P((void *));
|
|
#define spec_mmap genfs_badop
|
|
int spec_fsync __P((void *));
|
|
#define spec_seek genfs_badop
|
|
#define spec_remove genfs_badop
|
|
#define spec_link genfs_badop
|
|
#define spec_rename genfs_badop
|
|
#define spec_mkdir genfs_badop
|
|
#define spec_rmdir genfs_badop
|
|
#define spec_symlink genfs_badop
|
|
#define spec_readdir genfs_badop
|
|
#define spec_readlink genfs_badop
|
|
#define spec_abortop genfs_badop
|
|
#define spec_inactive genfs_nullop
|
|
#define spec_reclaim genfs_nullop
|
|
int spec_lock __P((void *));
|
|
int spec_unlock __P((void *));
|
|
int spec_bmap __P((void *));
|
|
int spec_strategy __P((void *));
|
|
int spec_print __P((void *));
|
|
#define spec_islocked genfs_nullop
|
|
int spec_pathconf __P((void *));
|
|
#define spec_advlock genfs_eopnotsupp
|
|
#define spec_blkatoff genfs_badop
|
|
#define spec_valloc genfs_badop
|
|
#define spec_reallocblks genfs_badop
|
|
#define spec_vfree genfs_badop
|
|
#define spec_truncate genfs_nullop
|
|
#define spec_update genfs_nullop
|
|
#define spec_bwrite vn_bwrite
|