/* * Copyright (c) 2000-2002 Apple Computer, Inc. All rights reserved. * * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ * * This file contains Original Code and/or Modifications of Original Code * as defined in and that are subject to the Apple Public Source License * Version 2.0 (the 'License'). You may not use this file except in * compliance with the License. The rights granted to you under the License * may not be used to create, or enable the creation or redistribution of, * unlawful or unlicensed copies of an Apple operating system, or to * circumvent, violate, or enable the circumvention or violation of, any * terms of an Apple operating system software license agreement. * * Please obtain a copy of the License at * http://www.opensource.apple.com/apsl/ and read it before using this file. * * The Original Code and all software distributed under the License are * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. * Please see the License for the specific language governing rights and * limitations under the License. * * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ */ /* * Copyright (c) 1995, 1998 Apple Computer, Inc. All Rights Reserved. * 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 8.6 (Berkeley) 5/21/95 */ #ifndef _MISCFS_SPECFS_SPECDEV_H_ #define _MISCFS_SPECFS_SPECDEV_H_ #include #ifdef __APPLE_API_PRIVATE #include /* * 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; int32_t si_opencount; daddr_t si_size; /* device block size in bytes */ daddr64_t si_lastr; /* last read blkno (read-ahead) */ u_int64_t si_devsize; /* actual device size in bytes */ u_int8_t si_initted; u_int8_t si_throttleable; u_int16_t si_isssd; u_int32_t si_devbsdunit; u_int64_t si_throttle_mask; thread_t si_mountingowner; }; /* * 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 #define v_specsize v_specinfo->si_size #define v_specdevsize v_specinfo->si_devsize #define v_speclastr v_specinfo->si_lastr /* * Flags for specinfo */ #define SI_MOUNTEDON 0x0001 /* block special device is mounted on */ #define SI_ALIASED 0x0002 /* multiple active vnodes refer to this device */ #define SI_MOUNTING 0x0004 /* block special device is getting mounted on */ /* * Special device management */ #define SPECHSZ 64 #if ((SPECHSZ & (SPECHSZ - 1)) == 0) #define SPECHASH(rdev) (((rdev>>21)+(rdev))&(SPECHSZ-1)) #else #define SPECHASH(rdev) (((unsigned)((rdev>>21)+(rdev)))%SPECHSZ) #endif extern struct vnode *speclisth[SPECHSZ]; /* * Prototypes for special file operations on vnodes. */ extern int(**spec_vnodeop_p)(void *); struct nameidata; struct componentname; struct flock; struct buf; struct uio; __BEGIN_DECLS #ifdef BSD_KERNEL_PRIVATE int spec_blktooff(struct vnop_blktooff_args *); int spec_offtoblk(struct vnop_offtoblk_args *); int spec_fsync_internal(vnode_t, int, vfs_context_t); int spec_blockmap(struct vnop_blockmap_args *); int spec_kqfilter(vnode_t vp, struct knote *kn, struct kevent_qos_s *kev); #endif /* BSD_KERNEL_PRIVATE */ int spec_ebadf(void *); int spec_lookup(struct vnop_lookup_args *); #define spec_create (int (*) (struct vnop_access_args *))err_create #define spec_mknod (int (*) (struct vnop_access_args *))err_mknod int spec_open(struct vnop_open_args *); int spec_close(struct vnop_close_args *); #define spec_access (int (*) (struct vnop_access_args *))spec_ebadf #define spec_getattr (int (*) (struct vnop_getattr_args *))spec_ebadf #define spec_setattr (int (*) (struct vnop_setattr_args *))spec_ebadf int spec_read(struct vnop_read_args *); int spec_write(struct vnop_write_args *); int spec_ioctl(struct vnop_ioctl_args *); int spec_select(struct vnop_select_args *); #define spec_revoke (int (*) (struct vnop_access_args *))nop_revoke #define spec_mmap (int (*) (struct vnop_access_args *))err_mmap int spec_fsync(struct vnop_fsync_args *); #define spec_remove (int (*) (struct vnop_access_args *))err_remove #define spec_link (int (*) (struct vnop_access_args *))err_link #define spec_rename (int (*) (struct vnop_access_args *))err_rename #define spec_mkdir (int (*) (struct vnop_access_args *))err_mkdir #define spec_rmdir (int (*) (struct vnop_access_args *))err_rmdir #define spec_symlink (int (*) (struct vnop_access_args *))err_symlink #define spec_readdir (int (*) (struct vnop_access_args *))err_readdir #define spec_readlink (int (*) (struct vnop_access_args *))err_readlink #define spec_inactive (int (*) (struct vnop_access_args *))nop_inactive #define spec_reclaim (int (*) (struct vnop_access_args *))nop_reclaim #define spec_lock (int (*) (struct vnop_access_args *))nop_lock #define spec_unlock (int (*)(struct vnop_access_args *))nop_unlock int spec_strategy(struct vnop_strategy_args *); #define spec_islocked (int (*) (struct vnop_access_args *))nop_islocked int spec_pathconf(struct vnop_pathconf_args *); #define spec_advlock (int (*) (struct vnop_access_args *))err_advlock #define spec_blkatoff (int (*) (struct vnop_access_args *))err_blkatoff #define spec_valloc (int (*) (struct vnop_access_args *))err_valloc #define spec_vfree (int (*) (struct vnop_access_args *))err_vfree #define spec_bwrite (int (*) (struct vnop_bwrite_args *))nop_bwrite __END_DECLS #endif /* __APPLE_API_PRIVATE */ #endif /* _MISCFS_SPECFS_SPECDEV_H_ */