specdev.h revision 1.7
1 /* 2 * Copyright (c) 1990, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * from: @(#)specdev.h 8.2 (Berkeley) 2/2/94 34 * $Id: specdev.h,v 1.7 1994/06/08 11:33:48 mycroft Exp $ 35 */ 36 37 /* 38 * This structure defines the information maintained about 39 * special devices. It is allocated in checkalias and freed 40 * in vgone. 41 */ 42 struct specinfo { 43 struct vnode **si_hashchain; 44 struct vnode *si_specnext; 45 long si_flags; 46 dev_t si_rdev; 47 }; 48 /* 49 * Exported shorthand 50 */ 51 #define v_rdev v_specinfo->si_rdev 52 #define v_hashchain v_specinfo->si_hashchain 53 #define v_specnext v_specinfo->si_specnext 54 #define v_specflags v_specinfo->si_flags 55 56 /* 57 * Flags for specinfo 58 */ 59 #define SI_MOUNTEDON 0x0001 /* block special device is mounted on */ 60 61 /* 62 * Special device management 63 */ 64 #define SPECHSZ 64 65 #if ((SPECHSZ&(SPECHSZ-1)) == 0) 66 #define SPECHASH(rdev) (((rdev>>5)+(rdev))&(SPECHSZ-1)) 67 #else 68 #define SPECHASH(rdev) (((unsigned)((rdev>>5)+(rdev)))%SPECHSZ) 69 #endif 70 71 struct vnode *speclisth[SPECHSZ]; 72 73 /* 74 * Prototypes for special file operations on vnodes. 75 */ 76 extern int (**spec_vnodeop_p)(); 77 struct nameidata; 78 struct componentname; 79 struct ucred; 80 struct flock; 81 struct buf; 82 struct uio; 83 84 int spec_badop(), 85 spec_ebadf(); 86 87 int spec_lookup __P((struct vop_lookup_args *)); 88 #define spec_create ((int (*) __P((struct vop_create_args *)))spec_badop) 89 #define spec_mknod ((int (*) __P((struct vop_mknod_args *)))spec_badop) 90 int spec_open __P((struct vop_open_args *)); 91 int spec_close __P((struct vop_close_args *)); 92 #define spec_access ((int (*) __P((struct vop_access_args *)))spec_ebadf) 93 #define spec_getattr ((int (*) __P((struct vop_getattr_args *)))spec_ebadf) 94 #define spec_setattr ((int (*) __P((struct vop_setattr_args *)))spec_ebadf) 95 int spec_read __P((struct vop_read_args *)); 96 int spec_write __P((struct vop_write_args *)); 97 int spec_ioctl __P((struct vop_ioctl_args *)); 98 int spec_select __P((struct vop_select_args *)); 99 #define spec_mmap ((int (*) __P((struct vop_mmap_args *)))spec_badop) 100 int spec_fsync __P((struct vop_fsync_args *)); 101 #define spec_seek ((int (*) __P((struct vop_seek_args *)))spec_badop) 102 #define spec_remove ((int (*) __P((struct vop_remove_args *)))spec_badop) 103 #define spec_link ((int (*) __P((struct vop_link_args *)))spec_badop) 104 #define spec_rename ((int (*) __P((struct vop_rename_args *)))spec_badop) 105 #define spec_mkdir ((int (*) __P((struct vop_mkdir_args *)))spec_badop) 106 #define spec_rmdir ((int (*) __P((struct vop_rmdir_args *)))spec_badop) 107 #define spec_symlink ((int (*) __P((struct vop_symlink_args *)))spec_badop) 108 #define spec_readdir ((int (*) __P((struct vop_readdir_args *)))spec_badop) 109 #define spec_readlink ((int (*) __P((struct vop_readlink_args *)))spec_badop) 110 #define spec_abortop ((int (*) __P((struct vop_abortop_args *)))spec_badop) 111 #define spec_inactive ((int (*) __P((struct vop_inactive_args *)))nullop) 112 #define spec_reclaim ((int (*) __P((struct vop_reclaim_args *)))nullop) 113 int spec_lock __P((struct vop_lock_args *)); 114 int spec_unlock __P((struct vop_unlock_args *)); 115 int spec_bmap __P((struct vop_bmap_args *)); 116 int spec_strategy __P((struct vop_strategy_args *)); 117 int spec_print __P((struct vop_print_args *)); 118 #define spec_islocked ((int (*) __P((struct vop_islocked_args *)))nullop) 119 int spec_pathconf __P((struct vop_pathconf_args *)); 120 int spec_advlock __P((struct vop_advlock_args *)); 121 #define spec_blkatoff ((int (*) __P((struct vop_blkatoff_args *)))spec_badop) 122 #define spec_valloc ((int (*) __P((struct vop_valloc_args *)))spec_badop) 123 #define spec_reallocblks \ 124 ((int (*) __P((struct vop_reallocblks_args *)))spec_badop) 125 #define spec_vfree ((int (*) __P((struct vop_vfree_args *)))spec_badop) 126 #define spec_truncate ((int (*) __P((struct vop_truncate_args *)))nullop) 127 #define spec_update ((int (*) __P((struct vop_update_args *)))nullop) 128 #define spec_bwrite ((int (*) __P((struct vop_bwrite_args *)))nullop) 129
Indexes created Mon Sep 22 05:09:51 GMT 2025