specdev.h revision 1.32.8.2
1 1.32.8.2 pooka /* $NetBSD: specdev.h,v 1.32.8.2 2007/08/03 08:50:24 pooka Exp $ */ 2 1.32.8.2 pooka 3 1.32.8.2 pooka /* 4 1.32.8.2 pooka * Copyright (c) 1990, 1993 5 1.32.8.2 pooka * The Regents of the University of California. All rights reserved. 6 1.32.8.2 pooka * 7 1.32.8.2 pooka * Redistribution and use in source and binary forms, with or without 8 1.32.8.2 pooka * modification, are permitted provided that the following conditions 9 1.32.8.2 pooka * are met: 10 1.32.8.2 pooka * 1. Redistributions of source code must retain the above copyright 11 1.32.8.2 pooka * notice, this list of conditions and the following disclaimer. 12 1.32.8.2 pooka * 2. Redistributions in binary form must reproduce the above copyright 13 1.32.8.2 pooka * notice, this list of conditions and the following disclaimer in the 14 1.32.8.2 pooka * documentation and/or other materials provided with the distribution. 15 1.32.8.2 pooka * 3. Neither the name of the University nor the names of its contributors 16 1.32.8.2 pooka * may be used to endorse or promote products derived from this software 17 1.32.8.2 pooka * without specific prior written permission. 18 1.32.8.2 pooka * 19 1.32.8.2 pooka * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 1.32.8.2 pooka * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 1.32.8.2 pooka * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 1.32.8.2 pooka * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 1.32.8.2 pooka * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 1.32.8.2 pooka * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 1.32.8.2 pooka * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 1.32.8.2 pooka * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 1.32.8.2 pooka * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 1.32.8.2 pooka * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 1.32.8.2 pooka * SUCH DAMAGE. 30 1.32.8.2 pooka * 31 1.32.8.2 pooka * @(#)specdev.h 8.6 (Berkeley) 5/21/95 32 1.32.8.2 pooka */ 33 1.32.8.2 pooka #ifndef _MISCFS_SPECFS_SPECDEV_H_ 34 1.32.8.2 pooka #define _MISCFS_SPECFS_SPECDEV_H_ 35 1.32.8.2 pooka 36 1.32.8.2 pooka /* 37 1.32.8.2 pooka * This structure defines the information maintained about 38 1.32.8.2 pooka * special devices. It is allocated in checkalias and freed 39 1.32.8.2 pooka * in vgone. 40 1.32.8.2 pooka */ 41 1.32.8.2 pooka struct spec_cow_entry { 42 1.32.8.2 pooka SLIST_ENTRY(spec_cow_entry) ce_list; 43 1.32.8.2 pooka int (*ce_func)(void *, struct buf *); 44 1.32.8.2 pooka void *ce_cookie; 45 1.32.8.2 pooka }; 46 1.32.8.2 pooka 47 1.32.8.2 pooka struct specinfo { 48 1.32.8.2 pooka struct vnode **si_hashchain; 49 1.32.8.2 pooka struct vnode *si_specnext; 50 1.32.8.2 pooka struct mount *si_mountpoint; 51 1.32.8.2 pooka dev_t si_rdev; 52 1.32.8.2 pooka struct lockf *si_lockf; 53 1.32.8.2 pooka struct simplelock si_cow_slock; 54 1.32.8.2 pooka SLIST_HEAD(, spec_cow_entry) si_cow_head; 55 1.32.8.2 pooka int si_cow_req; 56 1.32.8.2 pooka int si_cow_count; 57 1.32.8.2 pooka }; 58 1.32.8.2 pooka /* 59 1.32.8.2 pooka * Exported shorthand 60 1.32.8.2 pooka */ 61 1.32.8.2 pooka #define v_rdev v_specinfo->si_rdev 62 1.32.8.2 pooka #define v_hashchain v_specinfo->si_hashchain 63 1.32.8.2 pooka #define v_specnext v_specinfo->si_specnext 64 1.32.8.2 pooka #define v_speclockf v_specinfo->si_lockf 65 1.32.8.2 pooka #define v_specmountpoint v_specinfo->si_mountpoint 66 1.32.8.2 pooka #define v_spec_cow_slock v_specinfo->si_cow_slock 67 1.32.8.2 pooka #define v_spec_cow_head v_specinfo->si_cow_head 68 1.32.8.2 pooka #define v_spec_cow_req v_specinfo->si_cow_req 69 1.32.8.2 pooka #define v_spec_cow_count v_specinfo->si_cow_count 70 1.32.8.2 pooka 71 1.32.8.2 pooka #define SPEC_COW_LOCK(si, s) \ 72 1.32.8.2 pooka do { \ 73 1.32.8.2 pooka (s) = splbio(); \ 74 1.32.8.2 pooka simple_lock(&(si)->si_cow_slock) ; \ 75 1.32.8.2 pooka } while (/*CONSTCOND*/0) 76 1.32.8.2 pooka 77 1.32.8.2 pooka #define SPEC_COW_UNLOCK(si, s) \ 78 1.32.8.2 pooka do { \ 79 1.32.8.2 pooka simple_unlock(&(si)->si_cow_slock) ; \ 80 1.32.8.2 pooka splx((s)); \ 81 1.32.8.2 pooka } while (/*CONSTCOND*/0) 82 1.32.8.2 pooka 83 1.32.8.2 pooka /* 84 1.32.8.2 pooka * Special device management 85 1.32.8.2 pooka */ 86 1.32.8.2 pooka #define SPECHSZ 64 87 1.32.8.2 pooka #if ((SPECHSZ&(SPECHSZ-1)) == 0) 88 1.32.8.2 pooka #define SPECHASH(rdev) (((rdev>>5)+(rdev))&(SPECHSZ-1)) 89 1.32.8.2 pooka #else 90 1.32.8.2 pooka #define SPECHASH(rdev) (((unsigned)((rdev>>5)+(rdev)))%SPECHSZ) 91 1.32.8.2 pooka #endif 92 1.32.8.2 pooka 93 1.32.8.2 pooka extern struct vnode *speclisth[SPECHSZ]; 94 1.32.8.2 pooka 95 1.32.8.2 pooka /* 96 1.32.8.2 pooka * Prototypes for special file operations on vnodes. 97 1.32.8.2 pooka */ 98 1.32.8.2 pooka extern int (**spec_vnodeop_p)(void *); 99 1.32.8.2 pooka struct nameidata; 100 1.32.8.2 pooka struct componentname; 101 1.32.8.2 pooka struct flock; 102 1.32.8.2 pooka struct buf; 103 1.32.8.2 pooka struct uio; 104 1.32.8.2 pooka 105 1.32.8.2 pooka int spec_lookup(void *); 106 1.32.8.2 pooka #define spec_create genfs_badop 107 1.32.8.2 pooka #define spec_mknod genfs_badop 108 1.32.8.2 pooka int spec_open(void *); 109 1.32.8.2 pooka int spec_close(void *); 110 1.32.8.2 pooka #define spec_access genfs_ebadf 111 1.32.8.2 pooka #define spec_getattr genfs_ebadf 112 1.32.8.2 pooka #define spec_setattr genfs_ebadf 113 1.32.8.2 pooka int spec_read(void *); 114 1.32.8.2 pooka int spec_write(void *); 115 1.32.8.2 pooka #define spec_lease_check genfs_nullop 116 1.32.8.2 pooka #define spec_fcntl genfs_fcntl 117 1.32.8.2 pooka int spec_ioctl(void *); 118 1.32.8.2 pooka int spec_poll(void *); 119 1.32.8.2 pooka int spec_kqfilter(void *); 120 1.32.8.2 pooka #define spec_revoke genfs_revoke 121 1.32.8.2 pooka int spec_mmap(void *); 122 1.32.8.2 pooka int spec_fsync(void *); 123 1.32.8.2 pooka #define spec_seek genfs_nullop /* XXX should query device */ 124 1.32.8.2 pooka #define spec_remove genfs_badop 125 1.32.8.2 pooka #define spec_link genfs_badop 126 1.32.8.2 pooka #define spec_rename genfs_badop 127 1.32.8.2 pooka #define spec_mkdir genfs_badop 128 1.32.8.2 pooka #define spec_rmdir genfs_badop 129 1.32.8.2 pooka #define spec_symlink genfs_badop 130 1.32.8.2 pooka #define spec_readdir genfs_badop 131 1.32.8.2 pooka #define spec_readlink genfs_badop 132 1.32.8.2 pooka #define spec_abortop genfs_badop 133 1.32.8.2 pooka #define spec_reclaim genfs_nullop 134 1.32.8.2 pooka int spec_inactive(void *); 135 1.32.8.2 pooka #define spec_lock genfs_nolock 136 1.32.8.2 pooka #define spec_unlock genfs_nounlock 137 1.32.8.2 pooka int spec_bmap(void *); 138 1.32.8.2 pooka int spec_strategy(void *); 139 1.32.8.2 pooka int spec_print(void *); 140 1.32.8.2 pooka #define spec_islocked genfs_noislocked 141 1.32.8.2 pooka int spec_pathconf(void *); 142 1.32.8.2 pooka int spec_advlock(void *); 143 1.32.8.2 pooka #define spec_bwrite vn_bwrite 144 1.32.8.2 pooka #define spec_getpages genfs_getpages 145 1.32.8.2 pooka #define spec_putpages genfs_putpages 146 1.32.8.2 pooka 147 1.32.8.2 pooka #endif /* _MISCFS_SPECFS_SPECDEV_H_ */ 148
Indexes created Fri Oct 03 14:09:59 GMT 2025