1 /* 2 * Copyright (c) 1989, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * This code is derived from software contributed to Berkeley by 6 * Rick Macklem at The University of Guelph. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by the University of 19 * California, Berkeley and its contributors. 20 * 4. Neither the name of the University nor the names of its contributors 21 * may be used to endorse or promote products derived from this software 22 * without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 * 36 * @(#)nfsnode.h 8.4 (Berkeley) 2/13/94 37 */ 38 39 /* 40 * Silly rename structure that hangs off the nfsnode until the name 41 * can be removed by nfs_inactive() 42 */ 43 struct sillyrename { 44 struct ucred *s_cred; 45 struct vnode *s_dvp; 46 long s_namlen; 47 char s_name[20]; 48 }; 49 50 /* 51 * The nfsnode is the nfs equivalent to ufs's inode. Any similarity 52 * is purely coincidental. 53 * There is a unique nfsnode allocated for each active file, 54 * each current directory, each mounted-on file, text file, and the root. 55 * An nfsnode is 'named' by its file handle. (nget/nfs_node.c) 56 */ 57 58 struct nfsnode { 59 struct nfsnode *n_forw; /* hash, forward */ 60 struct nfsnode **n_back; /* hash, backward */ 61 nfsv2fh_t n_fh; /* NFS File Handle */ 62 long n_flag; /* Flag for locking.. */ 63 struct vnode *n_vnode; /* vnode associated with this node */ 64 struct vattr n_vattr; /* Vnode attribute cache */ 65 time_t n_attrstamp; /* Time stamp for cached attributes */ 66 struct sillyrename *n_sillyrename; /* Ptr to silly rename struct */ 67 u_quad_t n_size; /* Current size of file */ 68 int n_error; /* Save write error value */ 69 u_long n_direofoffset; /* Dir. EOF offset cache */ 70 time_t n_mtime; /* Prev modify time. */ 71 time_t n_ctime; /* Prev create time. */ 72 u_quad_t n_brev; /* Modify rev when cached */ 73 u_quad_t n_lrev; /* Modify rev for lease */ 74 time_t n_expiry; /* Lease expiry time */ 75 struct nfsnode *n_tnext; /* Nqnfs timer chain */ 76 struct nfsnode *n_tprev; 77 long spare1; /* To 8 byte boundary */ 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(nfsbufs, 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 int nfsspec_read __P((struct vop_read_args *)); 128 int nfsspec_write __P((struct vop_write_args *)); 129 #ifdef FIFO 130 int nfsfifo_read __P((struct vop_read_args *)); 131 int nfsfifo_write __P((struct vop_write_args *)); 132 #endif 133 #define nfs_ioctl ((int (*) __P((struct vop_ioctl_args *)))enoioctl) 134 #define nfs_select ((int (*) __P((struct vop_select_args *)))seltrue) 135 int nfs_mmap __P((struct vop_mmap_args *)); 136 int nfs_fsync __P((struct vop_fsync_args *)); 137 #define nfs_seek ((int (*) __P((struct vop_seek_args *)))nullop) 138 int nfs_remove __P((struct vop_remove_args *)); 139 int nfs_link __P((struct vop_link_args *)); 140 int nfs_rename __P((struct vop_rename_args *)); 141 int nfs_mkdir __P((struct vop_mkdir_args *)); 142 int nfs_rmdir __P((struct vop_rmdir_args *)); 143 int nfs_symlink __P((struct vop_symlink_args *)); 144 int nfs_readdir __P((struct vop_readdir_args *)); 145 int nfs_readlink __P((struct vop_readlink_args *)); 146 int nfs_abortop __P((struct vop_abortop_args *)); 147 int nfs_inactive __P((struct vop_inactive_args *)); 148 int nfs_reclaim __P((struct vop_reclaim_args *)); 149 int nfs_lock __P((struct vop_lock_args *)); 150 int nfs_unlock __P((struct vop_unlock_args *)); 151 int nfs_bmap __P((struct vop_bmap_args *)); 152 int nfs_strategy __P((struct vop_strategy_args *)); 153 int nfs_print __P((struct vop_print_args *)); 154 int nfs_islocked __P((struct vop_islocked_args *)); 155 int nfs_pathconf __P((struct vop_pathconf_args *)); 156 int nfs_advlock __P((struct vop_advlock_args *)); 157 int nfs_blkatoff __P((struct vop_blkatoff_args *)); 158 int nfs_vget __P((struct mount *, ino_t, struct vnode **)); 159 int nfs_valloc __P((struct vop_valloc_args *)); 160 #define nfs_reallocblks \ 161 ((int (*) __P((struct vop_reallocblks_args *)))eopnotsupp) 162 int nfs_vfree __P((struct vop_vfree_args *)); 163 int nfs_truncate __P((struct vop_truncate_args *)); 164 int nfs_update __P((struct vop_update_args *)); 165 int nfs_bwrite __P((struct vop_bwrite_args *)); 166 #endif /* KERNEL */ 167