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1.1 ! root 1: /* ! 2: * Copyright (c) 1990 The Regents of the University of California. ! 3: * 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: * @(#)specdev.h 7.4 (Berkeley) 4/19/91 ! 34: */ ! 35: ! 36: /* ! 37: * This structure defines the information maintained about ! 38: * special devices. It is allocated in checkalias and freed ! 39: * in vgone. ! 40: */ ! 41: struct specinfo { ! 42: struct vnode **si_hashchain; ! 43: struct vnode *si_specnext; ! 44: long si_flags; ! 45: dev_t si_rdev; ! 46: }; ! 47: /* ! 48: * Exported shorthand ! 49: */ ! 50: #define v_rdev v_specinfo->si_rdev ! 51: #define v_hashchain v_specinfo->si_hashchain ! 52: #define v_specnext v_specinfo->si_specnext ! 53: #define v_specflags v_specinfo->si_flags ! 54: ! 55: /* ! 56: * Flags for specinfo ! 57: */ ! 58: #define SI_MOUNTEDON 0x0001 /* block special device is mounted on */ ! 59: ! 60: /* ! 61: * Special device management ! 62: */ ! 63: #define SPECHSZ 64 ! 64: #if ((SPECHSZ&(SPECHSZ-1)) == 0) ! 65: #define SPECHASH(rdev) (((rdev>>5)+(rdev))&(SPECHSZ-1)) ! 66: #else ! 67: #define SPECHASH(rdev) (((unsigned)((rdev>>5)+(rdev)))%SPECHSZ) ! 68: #endif ! 69: ! 70: struct vnode *speclisth[SPECHSZ]; ! 71: ! 72: /* ! 73: * Prototypes for special file operations on vnodes. ! 74: */ ! 75: struct nameidata; ! 76: struct ucred; ! 77: struct flock; ! 78: struct buf; ! 79: struct uio; ! 80: ! 81: int spec_badop(), ! 82: spec_ebadf(); ! 83: ! 84: int spec_lookup __P(( ! 85: struct vnode *vp, ! 86: struct nameidata *ndp, ! 87: struct proc *p)); ! 88: #define spec_create ((int (*) __P(( \ ! 89: struct nameidata *ndp, \ ! 90: struct vattr *vap, \ ! 91: struct proc *p))) spec_badop) ! 92: #define spec_mknod ((int (*) __P(( \ ! 93: struct nameidata *ndp, \ ! 94: struct vattr *vap, \ ! 95: struct ucred *cred, \ ! 96: struct proc *p))) spec_badop) ! 97: int spec_open __P(( ! 98: struct vnode *vp, ! 99: int mode, ! 100: struct ucred *cred, ! 101: struct proc *p)); ! 102: int spec_close __P(( ! 103: struct vnode *vp, ! 104: int fflag, ! 105: struct ucred *cred, ! 106: struct proc *p)); ! 107: #define spec_access ((int (*) __P(( \ ! 108: struct vnode *vp, \ ! 109: int mode, \ ! 110: struct ucred *cred, \ ! 111: struct proc *p))) spec_ebadf) ! 112: #define spec_getattr ((int (*) __P(( \ ! 113: struct vnode *vp, \ ! 114: struct vattr *vap, \ ! 115: struct ucred *cred, \ ! 116: struct proc *p))) spec_ebadf) ! 117: #define spec_setattr ((int (*) __P(( \ ! 118: struct vnode *vp, \ ! 119: struct vattr *vap, \ ! 120: struct ucred *cred, \ ! 121: struct proc *p))) spec_ebadf) ! 122: int spec_read __P(( ! 123: struct vnode *vp, ! 124: struct uio *uio, ! 125: int ioflag, ! 126: struct ucred *cred)); ! 127: int spec_write __P(( ! 128: struct vnode *vp, ! 129: struct uio *uio, ! 130: int ioflag, ! 131: struct ucred *cred)); ! 132: int spec_ioctl __P(( ! 133: struct vnode *vp, ! 134: int command, ! 135: caddr_t data, ! 136: int fflag, ! 137: struct ucred *cred, ! 138: struct proc *p)); ! 139: int spec_select __P(( ! 140: struct vnode *vp, ! 141: int which, ! 142: int fflags, ! 143: struct ucred *cred, ! 144: struct proc *p)); ! 145: #define spec_mmap ((int (*) __P(( \ ! 146: struct vnode *vp, \ ! 147: int fflags, \ ! 148: struct ucred *cred, \ ! 149: struct proc *p))) spec_badop) ! 150: #define spec_fsync ((int (*) __P(( \ ! 151: struct vnode *vp, \ ! 152: int fflags, \ ! 153: struct ucred *cred, \ ! 154: int waitfor, \ ! 155: struct proc *p))) nullop) ! 156: #define spec_seek ((int (*) __P(( \ ! 157: struct vnode *vp, \ ! 158: off_t oldoff, \ ! 159: off_t newoff, \ ! 160: struct ucred *cred))) spec_badop) ! 161: #define spec_remove ((int (*) __P(( \ ! 162: struct nameidata *ndp, \ ! 163: struct proc *p))) spec_badop) ! 164: #define spec_link ((int (*) __P(( \ ! 165: struct vnode *vp, \ ! 166: struct nameidata *ndp, \ ! 167: struct proc *p))) spec_badop) ! 168: #define spec_rename ((int (*) __P(( \ ! 169: struct nameidata *fndp, \ ! 170: struct nameidata *tdnp, \ ! 171: struct proc *p))) spec_badop) ! 172: #define spec_mkdir ((int (*) __P(( \ ! 173: struct nameidata *ndp, \ ! 174: struct vattr *vap, \ ! 175: struct proc *p))) spec_badop) ! 176: #define spec_rmdir ((int (*) __P(( \ ! 177: struct nameidata *ndp, \ ! 178: struct proc *p))) spec_badop) ! 179: #define spec_symlink ((int (*) __P(( \ ! 180: struct nameidata *ndp, \ ! 181: struct vattr *vap, \ ! 182: char *target, \ ! 183: struct proc *p))) spec_badop) ! 184: #define spec_readdir ((int (*) __P(( \ ! 185: struct vnode *vp, \ ! 186: struct uio *uio, \ ! 187: struct ucred *cred, \ ! 188: int *eofflagp))) spec_badop) ! 189: #define spec_readlink ((int (*) __P(( \ ! 190: struct vnode *vp, \ ! 191: struct uio *uio, \ ! 192: struct ucred *cred))) spec_badop) ! 193: #define spec_abortop ((int (*) __P(( \ ! 194: struct nameidata *ndp))) spec_badop) ! 195: #define spec_inactive ((int (*) __P(( \ ! 196: struct vnode *vp, \ ! 197: struct proc *p))) nullop) ! 198: #define spec_reclaim ((int (*) __P(( \ ! 199: struct vnode *vp))) nullop) ! 200: int spec_lock __P(( ! 201: struct vnode *vp)); ! 202: int spec_unlock __P(( ! 203: struct vnode *vp)); ! 204: int spec_bmap __P(( ! 205: struct vnode *vp, ! 206: daddr_t bn, ! 207: struct vnode **vpp, ! 208: daddr_t *bnp)); ! 209: int spec_strategy __P(( ! 210: struct buf *bp)); ! 211: int spec_print __P(( ! 212: struct vnode *vp)); ! 213: #define spec_islocked ((int (*) __P(( \ ! 214: struct vnode *vp))) nullop) ! 215: int spec_advlock __P(( ! 216: struct vnode *vp, ! 217: caddr_t id, ! 218: int op, ! 219: struct flock *fl, ! 220: int flags));
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