| 1 | /* $NetBSD: mfsnode.h,v 1.21 2008/03/26 14:19:43 ad Exp $ */ |
| 2 | |
| 3 | /* |
| 4 | * Copyright (c) 1989, 1993 |
| 5 | * The Regents of the University of California. All rights reserved. |
| 6 | * |
| 7 | * Redistribution and use in source and binary forms, with or without |
| 8 | * modification, are permitted provided that the following conditions |
| 9 | * are met: |
| 10 | * 1. Redistributions of source code must retain the above copyright |
| 11 | * notice, this list of conditions and the following disclaimer. |
| 12 | * 2. Redistributions in binary form must reproduce the above copyright |
| 13 | * notice, this list of conditions and the following disclaimer in the |
| 14 | * documentation and/or other materials provided with the distribution. |
| 15 | * 3. Neither the name of the University nor the names of its contributors |
| 16 | * may be used to endorse or promote products derived from this software |
| 17 | * without specific prior written permission. |
| 18 | * |
| 19 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
| 20 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 21 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 22 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
| 23 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 24 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 25 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 26 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 27 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 28 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 29 | * SUCH DAMAGE. |
| 30 | * |
| 31 | * @(#)mfsnode.h 8.3 (Berkeley) 5/19/95 |
| 32 | */ |
| 33 | |
| 34 | #ifndef _UFS_MFS_MFSNODE_H_ |
| 35 | #define _UFS_MFS_MFSNODE_H_ |
| 36 | |
| 37 | /* |
| 38 | * This structure defines the control data for the memory based file system. |
| 39 | */ |
| 40 | |
| 41 | struct mfsnode { |
| 42 | struct vnode *mfs_vnode; /* vnode associated with this mfsnode */ |
| 43 | void *mfs_baseoff; /* base of file system in memory */ |
| 44 | long mfs_size; /* size of memory file system */ |
| 45 | struct proc *mfs_proc; /* supporting process */ |
| 46 | int mfs_shutdown; /* shutdown this mfsnode */ |
| 47 | #if defined(_KERNEL) |
| 48 | kcondvar_t mfs_cv; /* notifier */ |
| 49 | int mfs_refcnt; /* number of references */ |
| 50 | struct bufq_state *mfs_buflist;/* list of I/O requests */ |
| 51 | #endif /* defined(_KERNEL) */ |
| 52 | }; |
| 53 | |
| 54 | #if defined(_KERNEL) |
| 55 | /* |
| 56 | * Convert between mfsnode pointers and vnode pointers |
| 57 | */ |
| 58 | #define VTOMFS(vp) ((struct mfsnode *)(vp)->v_data) |
| 59 | #define MFSTOV(mfsp) ((mfsp)->mfs_vnode) |
| 60 | |
| 61 | /* Prototypes for MFS operations on vnodes. */ |
| 62 | #define mfs_lookup genfs_badop |
| 63 | #define mfs_create genfs_badop |
| 64 | #define mfs_mknod genfs_badop |
| 65 | #define mfs_access genfs_badop |
| 66 | #define mfs_getattr genfs_badop |
| 67 | #define mfs_setattr genfs_badop |
| 68 | #define mfs_read genfs_badop |
| 69 | #define mfs_write genfs_badop |
| 70 | #define mfs_poll genfs_badop |
| 71 | #define mfs_mmap genfs_badop |
| 72 | #define mfs_seek genfs_badop |
| 73 | #define mfs_remove genfs_badop |
| 74 | #define mfs_link genfs_badop |
| 75 | #define mfs_rename genfs_badop |
| 76 | #define mfs_mkdir genfs_badop |
| 77 | #define mfs_rmdir genfs_badop |
| 78 | #define mfs_symlink genfs_badop |
| 79 | #define mfs_readdir genfs_badop |
| 80 | #define mfs_readlink genfs_badop |
| 81 | #define mfs_abortop genfs_badop |
| 82 | #define mfs_islocked genfs_noislocked |
| 83 | #define mfs_pathconf genfs_badop |
| 84 | #define mfs_advlock genfs_badop |
| 85 | #define mfs_bwrite vn_bwrite |
| 86 | #define mfs_revoke genfs_revoke |
| 87 | #define mfs_putpages genfs_null_putpages |
| 88 | |
| 89 | #endif /* defined(_KERNEL) */ |
| 90 | |
| 91 | #endif /* !_UFS_MFS_MFSNODE_H_ */ |
| 92 | |