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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: *
1.1.1.2 ! root 33: * from: @(#)specdev.h 7.4 (Berkeley) 4/19/91
! 34: * specdev.h,v 1.4 1993/06/27 05:59:07 andrew Exp
1.1 root 35: */
36:
1.1.1.2 ! root 37: #ifndef _SYS_SPECDEV_H_
! 38: #define _SYS_SPECDEV_H_
! 39:
1.1 root 40: /*
41: * This structure defines the information maintained about
42: * special devices. It is allocated in checkalias and freed
43: * in vgone.
44: */
45: struct specinfo {
46: struct vnode **si_hashchain;
47: struct vnode *si_specnext;
48: long si_flags;
49: dev_t si_rdev;
50: };
51: /*
52: * Exported shorthand
53: */
54: #define v_rdev v_specinfo->si_rdev
55: #define v_hashchain v_specinfo->si_hashchain
56: #define v_specnext v_specinfo->si_specnext
57: #define v_specflags v_specinfo->si_flags
58:
59: /*
60: * Flags for specinfo
61: */
62: #define SI_MOUNTEDON 0x0001 /* block special device is mounted on */
63:
64: /*
65: * Special device management
66: */
67: #define SPECHSZ 64
68: #if ((SPECHSZ&(SPECHSZ-1)) == 0)
69: #define SPECHASH(rdev) (((rdev>>5)+(rdev))&(SPECHSZ-1))
70: #else
71: #define SPECHASH(rdev) (((unsigned)((rdev>>5)+(rdev)))%SPECHSZ)
72: #endif
73:
74: struct vnode *speclisth[SPECHSZ];
75:
76: /*
77: * Prototypes for special file operations on vnodes.
78: */
79: struct nameidata;
80: struct ucred;
81: struct flock;
82: struct buf;
83: struct uio;
84:
85: int spec_badop(),
86: spec_ebadf();
87:
88: int spec_lookup __P((
89: struct vnode *vp,
90: struct nameidata *ndp,
91: struct proc *p));
92: #define spec_create ((int (*) __P(( \
93: struct nameidata *ndp, \
94: struct vattr *vap, \
95: struct proc *p))) spec_badop)
96: #define spec_mknod ((int (*) __P(( \
97: struct nameidata *ndp, \
98: struct vattr *vap, \
99: struct ucred *cred, \
100: struct proc *p))) spec_badop)
101: int spec_open __P((
102: struct vnode *vp,
103: int mode,
104: struct ucred *cred,
105: struct proc *p));
106: int spec_close __P((
107: struct vnode *vp,
108: int fflag,
109: struct ucred *cred,
110: struct proc *p));
111: #define spec_access ((int (*) __P(( \
112: struct vnode *vp, \
113: int mode, \
114: struct ucred *cred, \
115: struct proc *p))) spec_ebadf)
116: #define spec_getattr ((int (*) __P(( \
117: struct vnode *vp, \
118: struct vattr *vap, \
119: struct ucred *cred, \
120: struct proc *p))) spec_ebadf)
121: #define spec_setattr ((int (*) __P(( \
122: struct vnode *vp, \
123: struct vattr *vap, \
124: struct ucred *cred, \
125: struct proc *p))) spec_ebadf)
126: int spec_read __P((
127: struct vnode *vp,
128: struct uio *uio,
129: int ioflag,
130: struct ucred *cred));
131: int spec_write __P((
132: struct vnode *vp,
133: struct uio *uio,
134: int ioflag,
135: struct ucred *cred));
136: int spec_ioctl __P((
137: struct vnode *vp,
138: int command,
139: caddr_t data,
140: int fflag,
141: struct ucred *cred,
142: struct proc *p));
143: int spec_select __P((
144: struct vnode *vp,
145: int which,
146: int fflags,
147: struct ucred *cred,
148: struct proc *p));
149: #define spec_mmap ((int (*) __P(( \
150: struct vnode *vp, \
151: int fflags, \
152: struct ucred *cred, \
153: struct proc *p))) spec_badop)
154: #define spec_fsync ((int (*) __P(( \
155: struct vnode *vp, \
156: int fflags, \
157: struct ucred *cred, \
158: int waitfor, \
159: struct proc *p))) nullop)
160: #define spec_seek ((int (*) __P(( \
161: struct vnode *vp, \
162: off_t oldoff, \
163: off_t newoff, \
164: struct ucred *cred))) spec_badop)
165: #define spec_remove ((int (*) __P(( \
166: struct nameidata *ndp, \
167: struct proc *p))) spec_badop)
168: #define spec_link ((int (*) __P(( \
169: struct vnode *vp, \
170: struct nameidata *ndp, \
171: struct proc *p))) spec_badop)
172: #define spec_rename ((int (*) __P(( \
173: struct nameidata *fndp, \
174: struct nameidata *tdnp, \
175: struct proc *p))) spec_badop)
176: #define spec_mkdir ((int (*) __P(( \
177: struct nameidata *ndp, \
178: struct vattr *vap, \
179: struct proc *p))) spec_badop)
180: #define spec_rmdir ((int (*) __P(( \
181: struct nameidata *ndp, \
182: struct proc *p))) spec_badop)
183: #define spec_symlink ((int (*) __P(( \
184: struct nameidata *ndp, \
185: struct vattr *vap, \
186: char *target, \
187: struct proc *p))) spec_badop)
188: #define spec_readdir ((int (*) __P(( \
189: struct vnode *vp, \
190: struct uio *uio, \
191: struct ucred *cred, \
192: int *eofflagp))) spec_badop)
193: #define spec_readlink ((int (*) __P(( \
194: struct vnode *vp, \
195: struct uio *uio, \
196: struct ucred *cred))) spec_badop)
197: #define spec_abortop ((int (*) __P(( \
198: struct nameidata *ndp))) spec_badop)
199: #define spec_inactive ((int (*) __P(( \
200: struct vnode *vp, \
201: struct proc *p))) nullop)
202: #define spec_reclaim ((int (*) __P(( \
203: struct vnode *vp))) nullop)
204: int spec_lock __P((
205: struct vnode *vp));
206: int spec_unlock __P((
207: struct vnode *vp));
208: int spec_bmap __P((
209: struct vnode *vp,
210: daddr_t bn,
211: struct vnode **vpp,
212: daddr_t *bnp));
213: int spec_strategy __P((
214: struct buf *bp));
1.1.1.2 ! root 215: void spec_print __P((
1.1 root 216: struct vnode *vp));
217: #define spec_islocked ((int (*) __P(( \
218: struct vnode *vp))) nullop)
219: int spec_advlock __P((
220: struct vnode *vp,
221: caddr_t id,
222: int op,
223: struct flock *fl,
224: int flags));
1.1.1.2 ! root 225:
! 226: #endif /* !_SYS_SPECDEV_H_ */
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