nfsnode.h revision 1.14
1 /* $NetBSD: nfsnode.h,v 1.14 1995/03/26 20:37:32 jtc Exp $ */ 2 3 /* 4 * Copyright (c) 1989, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * Rick Macklem at The University of Guelph. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the University of 21 * California, Berkeley and its contributors. 22 * 4. Neither the name of the University nor the names of its contributors 23 * may be used to endorse or promote products derived from this software 24 * without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 28 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 29 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 30 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 36 * SUCH DAMAGE. 37 * 38 * @(#)nfsnode.h 8.6 (Berkeley) 8/18/94 39 */ 40 41 /* 42 * Silly rename structure that hangs off the nfsnode until the name 43 * can be removed by nfs_inactive() 44 */ 45 struct sillyrename { 46 struct ucred *s_cred; 47 struct vnode *s_dvp; 48 long s_namlen; 49 char s_name[20]; 50 }; 51 52 /* 53 * The nfsnode is the nfs equivalent to ufs's inode. Any similarity 54 * is purely coincidental. 55 * There is a unique nfsnode allocated for each active file, 56 * each current directory, each mounted-on file, text file, and the root. 57 * An nfsnode is 'named' by its file handle. (nget/nfs_node.c) 58 */ 59 60 struct nfsnode { 61 LIST_ENTRY(nfsnode) n_hash; /* Hash chain */ 62 CIRCLEQ_ENTRY(nfsnode) n_timer; /* Nqnfs timer chain */ 63 nfsv2fh_t n_fh; /* NFS File Handle */ 64 long n_flag; /* Flag for locking.. */ 65 struct vnode *n_vnode; /* vnode associated with this node */ 66 struct vattr n_vattr; /* Vnode attribute cache */ 67 time_t n_attrstamp; /* Time stamp for cached attributes */ 68 struct sillyrename *n_sillyrename; /* Ptr to silly rename struct */ 69 u_quad_t n_size; /* Current size of file */ 70 int n_error; /* Save write error value */ 71 u_long n_direofoffset; /* Dir. EOF offset cache */ 72 time_t n_mtime; /* Prev modify time. */ 73 time_t n_ctime; /* Prev create time. */ 74 u_quad_t n_brev; /* Modify rev when cached */ 75 u_quad_t n_lrev; /* Modify rev for lease */ 76 time_t n_expiry; /* Lease expiry time */ 77 struct lockf *n_lockf; /* Advisory lock records */ 78 struct sillyrename n_silly; /* Silly rename struct */ 79 struct timeval n_atim; /* Special file times */ 80 struct timeval n_mtim; 81 }; 82 83 /* 84 * Flags for n_flag 85 */ 86 #define NFLUSHWANT 0x0001 /* Want wakeup from a flush in prog. */ 87 #define NFLUSHINPROG 0x0002 /* Avoid multiple calls to vinvalbuf() */ 88 #define NMODIFIED 0x0004 /* Might have a modified buffer in bio */ 89 #define NWRITEERR 0x0008 /* Flag write errors so close will know */ 90 #define NQNFSNONCACHE 0x0020 /* Non-cachable lease */ 91 #define NQNFSWRITE 0x0040 /* Write lease */ 92 #define NQNFSEVICTED 0x0080 /* Has been evicted */ 93 #define NACC 0x0100 /* Special file accessed */ 94 #define NUPD 0x0200 /* Special file updated */ 95 #define NCHG 0x0400 /* Special file times changed */ 96 97 /* 98 * Convert between nfsnode pointers and vnode pointers 99 */ 100 #define VTONFS(vp) ((struct nfsnode *)(vp)->v_data) 101 #define NFSTOV(np) ((struct vnode *)(np)->n_vnode) 102 103 /* 104 * Queue head for nfsiod's 105 */ 106 TAILQ_HEAD(, buf) nfs_bufq; 107 108 #ifdef _KERNEL 109 /* 110 * Prototypes for NFS vnode operations 111 */ 112 int nfs_lookup __P((struct vop_lookup_args *)); 113 int nfs_create __P((struct vop_create_args *)); 114 int nfs_mknod __P((struct vop_mknod_args *)); 115 int nfs_open __P((struct vop_open_args *)); 116 int nfs_close __P((struct vop_close_args *)); 117 int nfsspec_close __P((struct vop_close_args *)); 118 #ifdef FIFO 119 int nfsfifo_close __P((struct vop_close_args *)); 120 #endif 121 int nfs_access __P((struct vop_access_args *)); 122 int nfsspec_access __P((struct vop_access_args *)); 123 int nfs_getattr __P((struct vop_getattr_args *)); 124 int nfs_setattr __P((struct vop_setattr_args *)); 125 int nfs_read __P((struct vop_read_args *)); 126 int nfs_write __P((struct vop_write_args *)); 127 #define nfs_lease_check ((int (*) __P((struct vop_lease_args *)))nullop) 128 int nfsspec_read __P((struct vop_read_args *)); 129 int nfsspec_write __P((struct vop_write_args *)); 130 #ifdef FIFO 131 int nfsfifo_read __P((struct vop_read_args *)); 132 int nfsfifo_write __P((struct vop_write_args *)); 133 #endif 134 #define nfs_ioctl ((int (*) __P((struct vop_ioctl_args *)))enoioctl) 135 #define nfs_select ((int (*) __P((struct vop_select_args *)))seltrue) 136 int nfs_mmap __P((struct vop_mmap_args *)); 137 int nfs_fsync __P((struct vop_fsync_args *)); 138 #define nfs_seek ((int (*) __P((struct vop_seek_args *)))nullop) 139 int nfs_remove __P((struct vop_remove_args *)); 140 int nfs_link __P((struct vop_link_args *)); 141 int nfs_rename __P((struct vop_rename_args *)); 142 int nfs_mkdir __P((struct vop_mkdir_args *)); 143 int nfs_rmdir __P((struct vop_rmdir_args *)); 144 int nfs_symlink __P((struct vop_symlink_args *)); 145 int nfs_readdir __P((struct vop_readdir_args *)); 146 int nfs_readlink __P((struct vop_readlink_args *)); 147 int nfs_abortop __P((struct vop_abortop_args *)); 148 int nfs_inactive __P((struct vop_inactive_args *)); 149 int nfs_reclaim __P((struct vop_reclaim_args *)); 150 int nfs_lock __P((struct vop_lock_args *)); 151 int nfs_unlock __P((struct vop_unlock_args *)); 152 int nfs_bmap __P((struct vop_bmap_args *)); 153 int nfs_strategy __P((struct vop_strategy_args *)); 154 int nfs_print __P((struct vop_print_args *)); 155 int nfs_islocked __P((struct vop_islocked_args *)); 156 int nfs_pathconf __P((struct vop_pathconf_args *)); 157 int nfs_advlock __P((struct vop_advlock_args *)); 158 int nfs_blkatoff __P((struct vop_blkatoff_args *)); 159 int nfs_vget __P((struct mount *, ino_t, struct vnode **)); 160 int nfs_valloc __P((struct vop_valloc_args *)); 161 #define nfs_reallocblks \ 162 ((int (*) __P((struct vop_reallocblks_args *)))eopnotsupp) 163 int nfs_vfree __P((struct vop_vfree_args *)); 164 int nfs_truncate __P((struct vop_truncate_args *)); 165 int nfs_update __P((struct vop_update_args *)); 166 int nfs_bwrite __P((struct vop_bwrite_args *)); 167 #endif /* _KERNEL */ 168
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