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1.1 root 1: /*
2: * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
3: *
4: * @APPLE_LICENSE_HEADER_START@
5: *
6: * The contents of this file constitute Original Code as defined in and
7: * are subject to the Apple Public Source License Version 1.1 (the
8: * "License"). You may not use this file except in compliance with the
9: * License. Please obtain a copy of the License at
10: * http://www.apple.com/publicsource and read it before using this file.
11: *
12: * This Original Code and all software distributed under the License are
13: * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
14: * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
15: * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
16: * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the
17: * License for the specific language governing rights and limitations
18: * under the License.
19: *
20: * @APPLE_LICENSE_HEADER_END@
21: */
22: /*
23: * Copyright (c) 1995, 1998 Apple Computer, Inc. All Rights Reserved.
24: * Copyright (c) 1990, 1993
25: * The Regents of the University of California. All rights reserved.
26: *
27: * Redistribution and use in source and binary forms, with or without
28: * modification, are permitted provided that the following conditions
29: * are met:
30: * 1. Redistributions of source code must retain the above copyright
31: * notice, this list of conditions and the following disclaimer.
32: * 2. Redistributions in binary form must reproduce the above copyright
33: * notice, this list of conditions and the following disclaimer in the
34: * documentation and/or other materials provided with the distribution.
35: * 3. All advertising materials mentioning features or use of this software
36: * must display the following acknowledgement:
37: * This product includes software developed by the University of
38: * California, Berkeley and its contributors.
39: * 4. Neither the name of the University nor the names of its contributors
40: * may be used to endorse or promote products derived from this software
41: * without specific prior written permission.
42: *
43: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
44: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
45: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
46: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
47: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
48: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
49: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
50: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
51: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
52: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
53: * SUCH DAMAGE.
54: *
55: * @(#)specdev.h 8.6 (Berkeley) 5/21/95
56: */
57:
58: #ifndef _MISCFS_SPECFS_SPECDEV_H_
59: #define _MISCFS_SPECFS_SPECDEV_H_
60:
61: #include <vfs/vfs_support.h>
62:
63: /*
64: * This structure defines the information maintained about
65: * special devices. It is allocated in checkalias and freed
66: * in vgone.
67: */
68: struct specinfo {
69: struct vnode **si_hashchain;
70: struct vnode *si_specnext;
71: long si_flags;
72: dev_t si_rdev;
73: daddr_t si_size; /* block device size in bytes */
74: };
75: /*
76: * Exported shorthand
77: */
78: #define v_rdev v_specinfo->si_rdev
79: #define v_hashchain v_specinfo->si_hashchain
80: #define v_specnext v_specinfo->si_specnext
81: #define v_specflags v_specinfo->si_flags
82: #define v_specsize v_specinfo->si_size
83:
84: /*
85: * Flags for specinfo
86: */
87: #define SI_MOUNTEDON 0x0001 /* block special device is mounted on */
88:
89: /*
90: * Special device management
91: */
92: #define SPECHSZ 64
93: #if ((SPECHSZ&(SPECHSZ-1)) == 0)
94: #define SPECHASH(rdev) (((rdev>>5)+(rdev))&(SPECHSZ-1))
95: #else
96: #define SPECHASH(rdev) (((unsigned)((rdev>>5)+(rdev)))%SPECHSZ)
97: #endif
98:
99: extern struct vnode *speclisth[SPECHSZ];
100:
101: /*
102: * Prototypes for special file operations on vnodes.
103: */
104: extern int (**spec_vnodeop_p)();
105: struct nameidata;
106: struct componentname;
107: struct ucred;
108: struct flock;
109: struct buf;
110: struct uio;
111:
112: int spec_ebadf();
113:
114: int spec_lookup __P((struct vop_lookup_args *));
115: #define spec_create ((int (*) __P((struct vop_access_args *)))err_create)
116: #define spec_mknod ((int (*) __P((struct vop_access_args *)))err_mknod)
117: int spec_open __P((struct vop_open_args *));
118: int spec_close __P((struct vop_close_args *));
119: #define spec_access ((int (*) __P((struct vop_access_args *)))spec_ebadf)
120: #define spec_getattr ((int (*) __P((struct vop_getattr_args *)))spec_ebadf)
121: #define spec_setattr ((int (*) __P((struct vop_setattr_args *)))spec_ebadf)
122: int spec_read __P((struct vop_read_args *));
123: int spec_write __P((struct vop_write_args *));
124: #define spec_lease_check ((int (*) __P((struct vop_access_args *)))nop_lease)
125: int spec_ioctl __P((struct vop_ioctl_args *));
126: int spec_select __P((struct vop_select_args *));
127: #define spec_revoke ((int (*) __P((struct vop_access_args *)))nop_revoke)
128: #define spec_mmap ((int (*) __P((struct vop_access_args *)))err_mmap)
129: int spec_fsync __P((struct vop_fsync_args *));
130: #define spec_seek ((int (*) __P((struct vop_access_args *)))err_seek)
131: #define spec_remove ((int (*) __P((struct vop_access_args *)))err_remove)
132: #define spec_link ((int (*) __P((struct vop_access_args *)))err_link)
133: #define spec_rename ((int (*) __P((struct vop_access_args *)))err_rename)
134: #define spec_mkdir ((int (*) __P((struct vop_access_args *)))err_mkdir)
135: #define spec_rmdir ((int (*) __P((struct vop_access_args *)))err_rmdir)
136: #define spec_symlink ((int (*) __P((struct vop_access_args *)))err_symlink)
137: #define spec_readdir ((int (*) __P((struct vop_access_args *)))err_readdir)
138: #define spec_readlink ((int (*) __P((struct vop_access_args *)))err_readlink)
139: #define spec_abortop ((int (*) __P((struct vop_access_args *)))err_abortop)
140: #define spec_inactive ((int (*) __P((struct vop_access_args *)))nop_inactive)
141: #define spec_reclaim ((int (*) __P((struct vop_access_args *)))nop_reclaim)
142: #define spec_lock ((int (*) __P((struct vop_access_args *)))nop_lock)
143: #define spec_unlock ((int (*) __P((struct vop_access_args *)))nop_unlock)
144: int spec_bmap __P((struct vop_bmap_args *));
145: int spec_strategy __P((struct vop_strategy_args *));
146: int spec_print __P((struct vop_print_args *));
147: #define spec_islocked ((int (*) __P((struct vop_access_args *)))nop_islocked)
148: int spec_pathconf __P((struct vop_pathconf_args *));
149: #define spec_advlock ((int (*) __P((struct vop_access_args *)))err_advlock)
150: #define spec_blkatoff ((int (*) __P((struct vop_access_args *)))err_blkatoff)
151: #define spec_valloc ((int (*) __P((struct vop_access_args *)))err_valloc)
152: #define spec_vfree ((int (*) __P((struct vop_access_args *)))err_vfree)
153: #define spec_truncate ((int (*) __P((struct vop_access_args *)))nop_truncate)
154: #define spec_update ((int (*) __P((struct vop_access_args *)))nop_update)
155: #define spec_reallocblks \
156: ((int (*) __P((struct vop_reallocblks_args *)))err_reallocblks)
157: #define spec_bwrite ((int (*) __P((struct vop_bwrite_args *)))nop_bwrite)
158: int spec_devblocksize __P((struct vop_devblocksize_args *));
159: int spec_pagein __P((struct vop_pagein_args *));
160: int spec_pageout __P((struct vop_pageout_args *));
161:
162: #endif /* _MISCFS_SPECFS_SPECDEV_H_ */
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