specdev.h revision 1.33
1 1.33 hannken /* $NetBSD: specdev.h,v 1.33 2007/10/07 13:39:04 hannken Exp $ */ 2 1.8 cgd 3 1.1 cgd /* 4 1.7 mycroft * Copyright (c) 1990, 1993 5 1.7 mycroft * The Regents of the University of California. All rights reserved. 6 1.1 cgd * 7 1.1 cgd * Redistribution and use in source and binary forms, with or without 8 1.1 cgd * modification, are permitted provided that the following conditions 9 1.1 cgd * are met: 10 1.1 cgd * 1. Redistributions of source code must retain the above copyright 11 1.1 cgd * notice, this list of conditions and the following disclaimer. 12 1.1 cgd * 2. Redistributions in binary form must reproduce the above copyright 13 1.1 cgd * notice, this list of conditions and the following disclaimer in the 14 1.1 cgd * documentation and/or other materials provided with the distribution. 15 1.24 agc * 3. Neither the name of the University nor the names of its contributors 16 1.1 cgd * may be used to endorse or promote products derived from this software 17 1.1 cgd * without specific prior written permission. 18 1.1 cgd * 19 1.1 cgd * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 1.1 cgd * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 1.1 cgd * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 1.1 cgd * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 1.1 cgd * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 1.1 cgd * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 1.1 cgd * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 1.1 cgd * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 1.1 cgd * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 1.1 cgd * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 1.1 cgd * SUCH DAMAGE. 30 1.1 cgd * 31 1.17 fvdl * @(#)specdev.h 8.6 (Berkeley) 5/21/95 32 1.1 cgd */ 33 1.23 matt #ifndef _MISCFS_SPECFS_SPECDEV_H_ 34 1.23 matt #define _MISCFS_SPECFS_SPECDEV_H_ 35 1.1 cgd 36 1.1 cgd /* 37 1.1 cgd * This structure defines the information maintained about 38 1.1 cgd * special devices. It is allocated in checkalias and freed 39 1.1 cgd * in vgone. 40 1.1 cgd */ 41 1.25 hannken struct spec_cow_entry { 42 1.25 hannken SLIST_ENTRY(spec_cow_entry) ce_list; 43 1.26 hannken int (*ce_func)(void *, struct buf *); 44 1.25 hannken void *ce_cookie; 45 1.25 hannken }; 46 1.25 hannken 47 1.1 cgd struct specinfo { 48 1.1 cgd struct vnode **si_hashchain; 49 1.1 cgd struct vnode *si_specnext; 50 1.18 fvdl struct mount *si_mountpoint; 51 1.1 cgd dev_t si_rdev; 52 1.15 kleink struct lockf *si_lockf; 53 1.1 cgd }; 54 1.1 cgd /* 55 1.1 cgd * Exported shorthand 56 1.1 cgd */ 57 1.15 kleink #define v_rdev v_specinfo->si_rdev 58 1.15 kleink #define v_hashchain v_specinfo->si_hashchain 59 1.15 kleink #define v_specnext v_specinfo->si_specnext 60 1.15 kleink #define v_speclockf v_specinfo->si_lockf 61 1.18 fvdl #define v_specmountpoint v_specinfo->si_mountpoint 62 1.1 cgd 63 1.1 cgd /* 64 1.1 cgd * Special device management 65 1.1 cgd */ 66 1.1 cgd #define SPECHSZ 64 67 1.1 cgd #if ((SPECHSZ&(SPECHSZ-1)) == 0) 68 1.1 cgd #define SPECHASH(rdev) (((rdev>>5)+(rdev))&(SPECHSZ-1)) 69 1.1 cgd #else 70 1.1 cgd #define SPECHASH(rdev) (((unsigned)((rdev>>5)+(rdev)))%SPECHSZ) 71 1.1 cgd #endif 72 1.1 cgd 73 1.21 matt extern struct vnode *speclisth[SPECHSZ]; 74 1.1 cgd 75 1.1 cgd /* 76 1.1 cgd * Prototypes for special file operations on vnodes. 77 1.1 cgd */ 78 1.27 xtraeme extern int (**spec_vnodeop_p)(void *); 79 1.1 cgd struct nameidata; 80 1.7 mycroft struct componentname; 81 1.1 cgd struct flock; 82 1.1 cgd struct buf; 83 1.1 cgd struct uio; 84 1.1 cgd 85 1.27 xtraeme int spec_lookup(void *); 86 1.13 mycroft #define spec_create genfs_badop 87 1.13 mycroft #define spec_mknod genfs_badop 88 1.27 xtraeme int spec_open(void *); 89 1.27 xtraeme int spec_close(void *); 90 1.13 mycroft #define spec_access genfs_ebadf 91 1.13 mycroft #define spec_getattr genfs_ebadf 92 1.13 mycroft #define spec_setattr genfs_ebadf 93 1.27 xtraeme int spec_read(void *); 94 1.27 xtraeme int spec_write(void *); 95 1.13 mycroft #define spec_lease_check genfs_nullop 96 1.19 sommerfe #define spec_fcntl genfs_fcntl 97 1.27 xtraeme int spec_ioctl(void *); 98 1.27 xtraeme int spec_poll(void *); 99 1.27 xtraeme int spec_kqfilter(void *); 100 1.17 fvdl #define spec_revoke genfs_revoke 101 1.31 pooka int spec_mmap(void *); 102 1.27 xtraeme int spec_fsync(void *); 103 1.16 kleink #define spec_seek genfs_nullop /* XXX should query device */ 104 1.13 mycroft #define spec_remove genfs_badop 105 1.13 mycroft #define spec_link genfs_badop 106 1.13 mycroft #define spec_rename genfs_badop 107 1.13 mycroft #define spec_mkdir genfs_badop 108 1.13 mycroft #define spec_rmdir genfs_badop 109 1.13 mycroft #define spec_symlink genfs_badop 110 1.13 mycroft #define spec_readdir genfs_badop 111 1.13 mycroft #define spec_readlink genfs_badop 112 1.13 mycroft #define spec_abortop genfs_badop 113 1.13 mycroft #define spec_reclaim genfs_nullop 114 1.27 xtraeme int spec_inactive(void *); 115 1.17 fvdl #define spec_lock genfs_nolock 116 1.17 fvdl #define spec_unlock genfs_nounlock 117 1.27 xtraeme int spec_bmap(void *); 118 1.27 xtraeme int spec_strategy(void *); 119 1.27 xtraeme int spec_print(void *); 120 1.17 fvdl #define spec_islocked genfs_noislocked 121 1.27 xtraeme int spec_pathconf(void *); 122 1.27 xtraeme int spec_advlock(void *); 123 1.11 christos #define spec_bwrite vn_bwrite 124 1.20 chs #define spec_getpages genfs_getpages 125 1.20 chs #define spec_putpages genfs_putpages 126 1.23 matt 127 1.23 matt #endif /* _MISCFS_SPECFS_SPECDEV_H_ */ 128
Indexes created Fri Oct 03 17:10:05 GMT 2025