1994-05-24 10:09:53 +00:00
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/*
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* Copyright (c) 1990, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)specdev.h 8.2 (Berkeley) 2/2/94
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1995-07-29 11:44:31 +00:00
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* $Id: specdev.h,v 1.2 1994/08/02 07:45:30 davidg Exp $
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1994-05-24 10:09:53 +00:00
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*/
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/*
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* This structure defines the information maintained about
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* special devices. It is allocated in checkalias and freed
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* in vgone.
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*/
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struct specinfo {
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struct vnode **si_hashchain;
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struct vnode *si_specnext;
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long si_flags;
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dev_t si_rdev;
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};
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/*
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* Exported shorthand
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*/
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#define v_rdev v_specinfo->si_rdev
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#define v_hashchain v_specinfo->si_hashchain
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#define v_specnext v_specinfo->si_specnext
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#define v_specflags v_specinfo->si_flags
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/*
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* Flags for specinfo
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*/
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#define SI_MOUNTEDON 0x0001 /* block special device is mounted on */
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/*
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* Special device management
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*/
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#define SPECHSZ 64
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#if ((SPECHSZ&(SPECHSZ-1)) == 0)
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#define SPECHASH(rdev) (((rdev>>5)+(rdev))&(SPECHSZ-1))
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#else
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#define SPECHASH(rdev) (((unsigned)((rdev>>5)+(rdev)))%SPECHSZ)
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#endif
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1995-07-29 11:44:31 +00:00
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extern struct vnode *speclisth[SPECHSZ];
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1994-05-24 10:09:53 +00:00
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/*
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* Prototypes for special file operations on vnodes.
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*/
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extern int (**spec_vnodeop_p)();
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struct nameidata;
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struct componentname;
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struct ucred;
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struct flock;
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struct buf;
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struct uio;
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int spec_badop(),
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spec_ebadf();
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int spec_lookup __P((struct vop_lookup_args *));
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#define spec_create ((int (*) __P((struct vop_create_args *)))spec_badop)
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#define spec_mknod ((int (*) __P((struct vop_mknod_args *)))spec_badop)
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int spec_open __P((struct vop_open_args *));
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int spec_close __P((struct vop_close_args *));
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#define spec_access ((int (*) __P((struct vop_access_args *)))spec_ebadf)
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#define spec_getattr ((int (*) __P((struct vop_getattr_args *)))spec_ebadf)
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#define spec_setattr ((int (*) __P((struct vop_setattr_args *)))spec_ebadf)
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int spec_read __P((struct vop_read_args *));
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int spec_write __P((struct vop_write_args *));
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int spec_ioctl __P((struct vop_ioctl_args *));
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int spec_select __P((struct vop_select_args *));
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#define spec_mmap ((int (*) __P((struct vop_mmap_args *)))spec_badop)
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int spec_fsync __P((struct vop_fsync_args *));
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#define spec_seek ((int (*) __P((struct vop_seek_args *)))spec_badop)
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#define spec_remove ((int (*) __P((struct vop_remove_args *)))spec_badop)
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#define spec_link ((int (*) __P((struct vop_link_args *)))spec_badop)
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#define spec_rename ((int (*) __P((struct vop_rename_args *)))spec_badop)
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#define spec_mkdir ((int (*) __P((struct vop_mkdir_args *)))spec_badop)
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#define spec_rmdir ((int (*) __P((struct vop_rmdir_args *)))spec_badop)
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#define spec_symlink ((int (*) __P((struct vop_symlink_args *)))spec_badop)
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#define spec_readdir ((int (*) __P((struct vop_readdir_args *)))spec_badop)
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#define spec_readlink ((int (*) __P((struct vop_readlink_args *)))spec_badop)
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#define spec_abortop ((int (*) __P((struct vop_abortop_args *)))spec_badop)
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#define spec_inactive ((int (*) __P((struct vop_inactive_args *)))nullop)
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#define spec_reclaim ((int (*) __P((struct vop_reclaim_args *)))nullop)
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int spec_lock __P((struct vop_lock_args *));
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int spec_unlock __P((struct vop_unlock_args *));
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int spec_bmap __P((struct vop_bmap_args *));
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int spec_strategy __P((struct vop_strategy_args *));
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int spec_print __P((struct vop_print_args *));
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#define spec_islocked ((int (*) __P((struct vop_islocked_args *)))nullop)
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int spec_pathconf __P((struct vop_pathconf_args *));
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int spec_advlock __P((struct vop_advlock_args *));
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#define spec_blkatoff ((int (*) __P((struct vop_blkatoff_args *)))spec_badop)
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#define spec_valloc ((int (*) __P((struct vop_valloc_args *)))spec_badop)
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#define spec_reallocblks \
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((int (*) __P((struct vop_reallocblks_args *)))spec_badop)
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#define spec_vfree ((int (*) __P((struct vop_vfree_args *)))spec_badop)
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#define spec_truncate ((int (*) __P((struct vop_truncate_args *)))nullop)
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#define spec_update ((int (*) __P((struct vop_update_args *)))nullop)
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#define spec_bwrite ((int (*) __P((struct vop_bwrite_args *)))nullop)
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