projects / apple / xnu.git / blame
| Commit | Line | Data |
|---|---|---|
| 1c79356b | 1 | /* |
| 5d5c5d0d A |
2 | * Copyright (c) 2000-2002 Apple Computer, Inc. All rights reserved. |
| 3 | * | |
| 2d21ac55 | 4 | * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ |
| 1c79356b | 5 | * |
| 2d21ac55 A |
6 | * This file contains Original Code and/or Modifications of Original Code |
| 7 | * as defined in and that are subject to the Apple Public Source License | |
| 8 | * Version 2.0 (the 'License'). You may not use this file except in | |
| 9 | * compliance with the License. The rights granted to you under the License | |
| 10 | * may not be used to create, or enable the creation or redistribution of, | |
| 11 | * unlawful or unlicensed copies of an Apple operating system, or to | |
| 12 | * circumvent, violate, or enable the circumvention or violation of, any | |
| 13 | * terms of an Apple operating system software license agreement. | |
| 8f6c56a5 | 14 | * |
| 2d21ac55 A |
15 | * Please obtain a copy of the License at |
| 16 | * http://www.opensource.apple.com/apsl/ and read it before using this file. | |
| 17 | * | |
| 18 | * The Original Code and all software distributed under the License are | |
| 19 | * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER | |
| 8f6c56a5 A |
20 | * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, |
| 21 | * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, | |
| 2d21ac55 A |
22 | * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. |
| 23 | * Please see the License for the specific language governing rights and | |
| 24 | * limitations under the License. | |
| 8f6c56a5 | 25 | * |
| 2d21ac55 | 26 | * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ |
| 1c79356b A |
27 | */ |
| 28 | /* | |
| 29 | * Copyright (c) 1995, 1998 Apple Computer, Inc. All Rights Reserved. | |
| 30 | * Copyright (c) 1990, 1993 | |
| 31 | * The Regents of the University of California. All rights reserved. | |
| 32 | * | |
| 33 | * Redistribution and use in source and binary forms, with or without | |
| 34 | * modification, are permitted provided that the following conditions | |
| 35 | * are met: | |
| 36 | * 1. Redistributions of source code must retain the above copyright | |
| 37 | * notice, this list of conditions and the following disclaimer. | |
| 38 | * 2. Redistributions in binary form must reproduce the above copyright | |
| 39 | * notice, this list of conditions and the following disclaimer in the | |
| 40 | * documentation and/or other materials provided with the distribution. | |
| 41 | * 3. All advertising materials mentioning features or use of this software | |
| 42 | * must display the following acknowledgement: | |
| 43 | * This product includes software developed by the University of | |
| 44 | * California, Berkeley and its contributors. | |
| 45 | * 4. Neither the name of the University nor the names of its contributors | |
| 46 | * may be used to endorse or promote products derived from this software | |
| 47 | * without specific prior written permission. | |
| 48 | * | |
| 49 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | |
| 50 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
| 51 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
| 52 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
| 53 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
| 54 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
| 55 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
| 56 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
| 57 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
| 58 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
| 59 | * SUCH DAMAGE. | |
| 60 | * | |
| 61 | * @(#)specdev.h 8.6 (Berkeley) 5/21/95 | |
| 62 | */ | |
| 63 | ||
| 64 | #ifndef _MISCFS_SPECFS_SPECDEV_H_ | |
| 65 | #define _MISCFS_SPECFS_SPECDEV_H_ | |
| 66 | ||
| 9bccf70c A |
67 | #include <sys/appleapiopts.h> |
| 68 | ||
| 69 | #ifdef __APPLE_API_PRIVATE | |
| 1c79356b A |
70 | #include <vfs/vfs_support.h> |
| 71 | ||
| 72 | /* | |
| 73 | * This structure defines the information maintained about | |
| 74 | * special devices. It is allocated in checkalias and freed | |
| 75 | * in vgone. | |
| 76 | */ | |
| 77 | struct specinfo { | |
| 78 | struct vnode **si_hashchain; | |
| 79 | struct vnode *si_specnext; | |
| 80 | long si_flags; | |
| 81 | dev_t si_rdev; | |
| 6d2010ae | 82 | int32_t si_opencount; |
| 91447636 A |
83 | daddr_t si_size; /* device block size in bytes */ |
| 84 | daddr64_t si_lastr; /* last read blkno (read-ahead) */ | |
| 85 | u_int64_t si_devsize; /* actual device size in bytes */ | |
| 7ddcb079 A |
86 | |
| 87 | u_int8_t si_initted; | |
| 88 | u_int8_t si_throttleable; | |
| 89 | u_int16_t si_isssd; | |
| 90 | u_int32_t si_devbsdunit; | |
| 91 | u_int64_t si_throttle_mask; | |
| 1c79356b A |
92 | }; |
| 93 | /* | |
| 94 | * Exported shorthand | |
| 95 | */ | |
| 96 | #define v_rdev v_specinfo->si_rdev | |
| 97 | #define v_hashchain v_specinfo->si_hashchain | |
| 98 | #define v_specnext v_specinfo->si_specnext | |
| 99 | #define v_specflags v_specinfo->si_flags | |
| 100 | #define v_specsize v_specinfo->si_size | |
| 55e303ae | 101 | #define v_specdevsize v_specinfo->si_devsize |
| 91447636 | 102 | #define v_speclastr v_specinfo->si_lastr |
| 1c79356b A |
103 | |
| 104 | /* | |
| 105 | * Flags for specinfo | |
| 106 | */ | |
| 107 | #define SI_MOUNTEDON 0x0001 /* block special device is mounted on */ | |
| b0d623f7 | 108 | #define SI_ALIASED 0x0002 /* multiple active vnodes refer to this device */ |
| 1c79356b A |
109 | |
| 110 | /* | |
| 111 | * Special device management | |
| 112 | */ | |
| 113 | #define SPECHSZ 64 | |
| 114 | #if ((SPECHSZ&(SPECHSZ-1)) == 0) | |
| 115 | #define SPECHASH(rdev) (((rdev>>5)+(rdev))&(SPECHSZ-1)) | |
| 116 | #else | |
| 117 | #define SPECHASH(rdev) (((unsigned)((rdev>>5)+(rdev)))%SPECHSZ) | |
| 118 | #endif | |
| 119 | ||
| 120 | extern struct vnode *speclisth[SPECHSZ]; | |
| 121 | ||
| 122 | /* | |
| 123 | * Prototypes for special file operations on vnodes. | |
| 124 | */ | |
| 125 | extern int (**spec_vnodeop_p)(void *); | |
| 126 | struct nameidata; | |
| 127 | struct componentname; | |
| 1c79356b A |
128 | struct flock; |
| 129 | struct buf; | |
| 130 | struct uio; | |
| 131 | ||
| b0d623f7 A |
132 | __BEGIN_DECLS |
| 133 | #ifdef BSD_KERNEL_PRIVATE | |
| 134 | int spec_blktooff (struct vnop_blktooff_args *); | |
| 135 | int spec_offtoblk (struct vnop_offtoblk_args *); | |
| 136 | int spec_fsync_internal (vnode_t, int, vfs_context_t); | |
| 137 | int spec_blockmap (struct vnop_blockmap_args *); | |
| 138 | int spec_kqfilter (vnode_t vp, struct knote *kn); | |
| 139 | #endif /* BSD_KERNEL_PRIVATE */ | |
| 140 | ||
| 91447636 | 141 | int spec_ebadf(void *); |
| 1c79356b | 142 | |
| 91447636 A |
143 | int spec_lookup (struct vnop_lookup_args *); |
| 144 | #define spec_create (int (*) (struct vnop_access_args *))err_create | |
| 145 | #define spec_mknod (int (*) (struct vnop_access_args *))err_mknod | |
| 146 | int spec_open (struct vnop_open_args *); | |
| 147 | int spec_close (struct vnop_close_args *); | |
| 148 | #define spec_access (int (*) (struct vnop_access_args *))spec_ebadf | |
| 149 | #define spec_getattr (int (*) (struct vnop_getattr_args *))spec_ebadf | |
| 150 | #define spec_setattr (int (*) (struct vnop_setattr_args *))spec_ebadf | |
| 151 | int spec_read (struct vnop_read_args *); | |
| 152 | int spec_write (struct vnop_write_args *); | |
| 153 | int spec_ioctl (struct vnop_ioctl_args *); | |
| 154 | int spec_select (struct vnop_select_args *); | |
| 155 | #define spec_revoke (int (*) (struct vnop_access_args *))nop_revoke | |
| 156 | #define spec_mmap (int (*) (struct vnop_access_args *))err_mmap | |
| 157 | int spec_fsync (struct vnop_fsync_args *); | |
| 91447636 A |
158 | #define spec_remove (int (*) (struct vnop_access_args *))err_remove |
| 159 | #define spec_link (int (*) (struct vnop_access_args *))err_link | |
| 160 | #define spec_rename (int (*) (struct vnop_access_args *))err_rename | |
| 161 | #define spec_mkdir (int (*) (struct vnop_access_args *))err_mkdir | |
| 162 | #define spec_rmdir (int (*) (struct vnop_access_args *))err_rmdir | |
| 163 | #define spec_symlink (int (*) (struct vnop_access_args *))err_symlink | |
| 164 | #define spec_readdir (int (*) (struct vnop_access_args *))err_readdir | |
| 165 | #define spec_readlink (int (*) (struct vnop_access_args *))err_readlink | |
| 166 | #define spec_inactive (int (*) (struct vnop_access_args *))nop_inactive | |
| 167 | #define spec_reclaim (int (*) (struct vnop_access_args *))nop_reclaim | |
| 168 | #define spec_lock (int (*) (struct vnop_access_args *))nop_lock | |
| 169 | #define spec_unlock (int (*)(struct vnop_access_args *))nop_unlock | |
| 170 | int spec_strategy (struct vnop_strategy_args *); | |
| 171 | #define spec_islocked (int (*) (struct vnop_access_args *))nop_islocked | |
| 172 | int spec_pathconf (struct vnop_pathconf_args *); | |
| 173 | #define spec_advlock (int (*) (struct vnop_access_args *))err_advlock | |
| 174 | #define spec_blkatoff (int (*) (struct vnop_access_args *))err_blkatoff | |
| 175 | #define spec_valloc (int (*) (struct vnop_access_args *))err_valloc | |
| 176 | #define spec_vfree (int (*) (struct vnop_access_args *))err_vfree | |
| 177 | #define spec_bwrite (int (*) (struct vnop_bwrite_args *))nop_bwrite | |
| b0d623f7 | 178 | __END_DECLS |
| 1c79356b | 179 | |
| 9bccf70c | 180 | #endif /* __APPLE_API_PRIVATE */ |
| 1c79356b | 181 | #endif /* _MISCFS_SPECFS_SPECDEV_H_ */ |