nfsnode.h revision 1.1.1.2
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 8.9 (Berkeley) 5/14/95 37 */ 38 39 40 #ifndef _NFS_NFSNODE_H_ 41 #define _NFS_NFSNODE_H_ 42 43 #ifndef _NFS_NFS_H_ 44 #include <nfs/nfs.h> 45 #endif 46 47 /* 48 * Silly rename structure that hangs off the nfsnode until the name 49 * can be removed by nfs_inactive() 50 */ 51 struct sillyrename { 52 struct ucred *s_cred; 53 struct vnode *s_dvp; 54 long s_namlen; 55 char s_name[20]; 56 }; 57 58 /* 59 * This structure is used to save the logical directory offset to 60 * NFS cookie mappings. 61 * The mappings are stored in a list headed 62 * by n_cookies, as required. 63 * There is one mapping for each NFS_DIRBLKSIZ bytes of directory information 64 * stored in increasing logical offset byte order. 65 */ 66 #define NFSNUMCOOKIES 31 67 68 struct nfsdmap { 69 LIST_ENTRY(nfsdmap) ndm_list; 70 int ndm_eocookie; 71 nfsuint64 ndm_cookies[NFSNUMCOOKIES]; 72 }; 73 74 /* 75 * The nfsnode is the nfs equivalent to ufs's inode. Any similarity 76 * is purely coincidental. 77 * There is a unique nfsnode allocated for each active file, 78 * each current directory, each mounted-on file, text file, and the root. 79 * An nfsnode is 'named' by its file handle. (nget/nfs_node.c) 80 * If this structure exceeds 256 bytes (it is currently 256 using 4.4BSD-Lite 81 * type definitions), file handles of > 32 bytes should probably be split out 82 * into a separate MALLOC()'d data structure. (Reduce the size of nfsfh_t by 83 * changing the definition in sys/mount.h of NFS_SMALLFH.) 84 * NB: Hopefully the current order of the fields is such that everything will 85 * be well aligned and, therefore, tightly packed. 86 */ 87 struct nfsnode { 88 LIST_ENTRY(nfsnode) n_hash; /* Hash chain */ 89 CIRCLEQ_ENTRY(nfsnode) n_timer; /* Nqnfs timer chain */ 90 u_quad_t n_size; /* Current size of file */ 91 u_quad_t n_brev; /* Modify rev when cached */ 92 u_quad_t n_lrev; /* Modify rev for lease */ 93 struct vattr n_vattr; /* Vnode attribute cache */ 94 time_t n_attrstamp; /* Attr. cache timestamp */ 95 time_t n_mtime; /* Prev modify time. */ 96 time_t n_ctime; /* Prev create time. */ 97 time_t n_expiry; /* Lease expiry time */ 98 nfsfh_t *n_fhp; /* NFS File Handle */ 99 struct vnode *n_vnode; /* associated vnode */ 100 struct lockf *n_lockf; /* Locking record of file */ 101 int n_error; /* Save write error value */ 102 union { 103 struct timespec nf_atim; /* Special file times */ 104 nfsuint64 nd_cookieverf; /* Cookie verifier (dir only) */ 105 } n_un1; 106 union { 107 struct timespec nf_mtim; 108 off_t nd_direof; /* Dir. EOF offset cache */ 109 } n_un2; 110 union { 111 struct sillyrename *nf_silly; /* Ptr to silly rename struct */ 112 LIST_HEAD(, nfsdmap) nd_cook; /* cookies */ 113 } n_un3; 114 short n_fhsize; /* size in bytes, of fh */ 115 short n_flag; /* Flag for locking.. */ 116 nfsfh_t n_fh; /* Small File Handle */ 117 }; 118 119 #define n_atim n_un1.nf_atim 120 #define n_mtim n_un2.nf_mtim 121 #define n_sillyrename n_un3.nf_silly 122 #define n_cookieverf n_un1.nd_cookieverf 123 #define n_direofoffset n_un2.nd_direof 124 #define n_cookies n_un3.nd_cook 125 126 /* 127 * Flags for n_flag 128 */ 129 #define NFLUSHWANT 0x0001 /* Want wakeup from a flush in prog. */ 130 #define NFLUSHINPROG 0x0002 /* Avoid multiple calls to vinvalbuf() */ 131 #define NMODIFIED 0x0004 /* Might have a modified buffer in bio */ 132 #define NWRITEERR 0x0008 /* Flag write errors so close will know */ 133 #define NQNFSNONCACHE 0x0020 /* Non-cachable lease */ 134 #define NQNFSWRITE 0x0040 /* Write lease */ 135 #define NQNFSEVICTED 0x0080 /* Has been evicted */ 136 #define NACC 0x0100 /* Special file accessed */ 137 #define NUPD 0x0200 /* Special file updated */ 138 #define NCHG 0x0400 /* Special file times changed */ 139 140 /* 141 * Convert between nfsnode pointers and vnode pointers 142 */ 143 #define VTONFS(vp) ((struct nfsnode *)(vp)->v_data) 144 #define NFSTOV(np) ((struct vnode *)(np)->n_vnode) 145 146 /* 147 * Queue head for nfsiod's 148 */ 149 TAILQ_HEAD(, buf) nfs_bufq; 150 151 #ifdef KERNEL 152 /* 153 * Prototypes for NFS vnode operations 154 */ 155 int nfs_lookup __P((struct vop_lookup_args *)); 156 int nfs_create __P((struct vop_create_args *)); 157 int nfs_mknod __P((struct vop_mknod_args *)); 158 int nfs_open __P((struct vop_open_args *)); 159 int nfs_close __P((struct vop_close_args *)); 160 int nfsspec_close __P((struct vop_close_args *)); 161 int nfsfifo_close __P((struct vop_close_args *)); 162 int nfs_access __P((struct vop_access_args *)); 163 int nfsspec_access __P((struct vop_access_args *)); 164 int nfs_getattr __P((struct vop_getattr_args *)); 165 int nfs_setattr __P((struct vop_setattr_args *)); 166 int nfs_read __P((struct vop_read_args *)); 167 int nfs_write __P((struct vop_write_args *)); 168 #define nfs_lease_check ((int (*) __P((struct vop_lease_args *)))nullop) 169 #define nqnfs_vop_lease_check lease_check 170 int nfsspec_read __P((struct vop_read_args *)); 171 int nfsspec_write __P((struct vop_write_args *)); 172 int nfsfifo_read __P((struct vop_read_args *)); 173 int nfsfifo_write __P((struct vop_write_args *)); 174 #define nfs_ioctl ((int (*) __P((struct vop_ioctl_args *)))enoioctl) 175 #define nfs_select ((int (*) __P((struct vop_select_args *)))seltrue) 176 #define nfs_revoke vop_revoke 177 int nfs_mmap __P((struct vop_mmap_args *)); 178 int nfs_fsync __P((struct vop_fsync_args *)); 179 #define nfs_seek ((int (*) __P((struct vop_seek_args *)))nullop) 180 int nfs_remove __P((struct vop_remove_args *)); 181 int nfs_link __P((struct vop_link_args *)); 182 int nfs_rename __P((struct vop_rename_args *)); 183 int nfs_mkdir __P((struct vop_mkdir_args *)); 184 int nfs_rmdir __P((struct vop_rmdir_args *)); 185 int nfs_symlink __P((struct vop_symlink_args *)); 186 int nfs_readdir __P((struct vop_readdir_args *)); 187 int nfs_readlink __P((struct vop_readlink_args *)); 188 int nfs_abortop __P((struct vop_abortop_args *)); 189 int nfs_inactive __P((struct vop_inactive_args *)); 190 int nfs_reclaim __P((struct vop_reclaim_args *)); 191 #define nfs_lock ((int (*) __P((struct vop_lock_args *)))vop_nolock) 192 #define nfs_unlock ((int (*) __P((struct vop_unlock_args *)))vop_nounlock) 193 #define nfs_islocked ((int (*) __P((struct vop_islocked_args *)))vop_noislocked) 194 int nfs_bmap __P((struct vop_bmap_args *)); 195 int nfs_strategy __P((struct vop_strategy_args *)); 196 int nfs_print __P((struct vop_print_args *)); 197 int nfs_pathconf __P((struct vop_pathconf_args *)); 198 int nfs_advlock __P((struct vop_advlock_args *)); 199 int nfs_blkatoff __P((struct vop_blkatoff_args *)); 200 int nfs_bwrite __P((struct vop_bwrite_args *)); 201 int nfs_vget __P((struct mount *, ino_t, struct vnode **)); 202 int nfs_valloc __P((struct vop_valloc_args *)); 203 #define nfs_reallocblks \ 204 ((int (*) __P((struct vop_reallocblks_args *)))eopnotsupp) 205 int nfs_vfree __P((struct vop_vfree_args *)); 206 int nfs_truncate __P((struct vop_truncate_args *)); 207 int nfs_update __P((struct vop_update_args *)); 208 209 /* other stuff */ 210 int nfs_removeit __P((struct sillyrename *)); 211 int nfs_nget __P((struct mount *,nfsfh_t *,int,struct nfsnode **)); 212 int nfs_lookitup __P((struct vnode *,char *,int,struct ucred *,struct proc *,struct nfsnode **)); 213 int nfs_sillyrename __P((struct vnode *,struct vnode *,struct componentname *)); 214 nfsuint64 *nfs_getcookie __P((struct nfsnode *, off_t, int)); 215 void nfs_invaldir __P((struct vnode *)); 216 #define nqnfs_lease_updatetime lease_updatetime 217 218 #endif /* KERNEL */ 219 220 #endif 221
Indexes created Thu Oct 02 10:09:58 GMT 2025