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1.1 root 1: /*
2: * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
3: *
4: * @APPLE_LICENSE_HEADER_START@
5: *
6: * Portions Copyright (c) 1999 Apple Computer, Inc. All Rights
7: * Reserved. This file contains Original Code and/or Modifications of
8: * Original Code as defined in and that are subject to the Apple Public
9: * Source License Version 1.1 (the "License"). You may not use this file
10: * except in compliance with the License. Please obtain a copy of the
11: * License at http://www.apple.com/publicsource and read it before using
12: * this file.
13: *
14: * The Original Code and all software distributed under the License are
15: * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
16: * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
17: * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
18: * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the
19: * License for the specific language governing rights and limitations
20: * under the License.
21: *
22: * @APPLE_LICENSE_HEADER_END@
23: */
24:
25: /* Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved */
26: /*
27: * Copyright (c) 1989, 1993
28: * The Regents of the University of California. All rights reserved.
29: *
30: * This code is derived from software contributed to Berkeley by
31: * Rick Macklem at The University of Guelph.
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: * @(#)nfsnode.h 8.9 (Berkeley) 5/14/95
62: * FreeBSD-Id: nfsnode.h,v 1.24 1997/10/28 14:06:25 bde Exp $
63: */
64:
65:
66: #ifndef _NFS_NFSNODE_H_
67: #define _NFS_NFSNODE_H_
68:
69: #ifndef _NFS_NFS_H_
70: #include <nfs/nfs.h>
71: #endif
72:
73: /*
74: * Silly rename structure that hangs off the nfsnode until the name
75: * can be removed by nfs_inactive()
76: */
77: struct sillyrename {
78: struct ucred *s_cred;
79: struct vnode *s_dvp;
80: long s_namlen;
81: char s_name[20];
82: };
83:
84: /*
85: * This structure is used to save the logical directory offset to
86: * NFS cookie mappings.
87: * The mappings are stored in a list headed
88: * by n_cookies, as required.
89: * There is one mapping for each NFS_DIRBLKSIZ bytes of directory information
90: * stored in increasing logical offset byte order.
91: */
92: #define NFSNUMCOOKIES 31
93:
94: struct nfsdmap {
95: LIST_ENTRY(nfsdmap) ndm_list;
96: int ndm_eocookie;
97: nfsuint64 ndm_cookies[NFSNUMCOOKIES];
98: };
99:
100: /*
101: * The nfsnode is the nfs equivalent to ufs's inode. Any similarity
102: * is purely coincidental.
103: * There is a unique nfsnode allocated for each active file,
104: * each current directory, each mounted-on file, text file, and the root.
105: * An nfsnode is 'named' by its file handle. (nget/nfs_node.c)
106: * If this structure exceeds 256 bytes (it is currently 256 using 4.4BSD-Lite
107: * type definitions), file handles of > 32 bytes should probably be split out
108: * into a separate MALLOC()'d data structure. (Reduce the size of nfsfh_t by
109: * changing the definition in sys/mount.h of NFS_SMALLFH.)
110: * NB: Hopefully the current order of the fields is such that everything will
111: * be well aligned and, therefore, tightly packed.
112: */
113: struct nfsnode {
114: LIST_ENTRY(nfsnode) n_hash; /* Hash chain */
115: CIRCLEQ_ENTRY(nfsnode) n_timer; /* Nqnfs timer chain */
116: u_quad_t n_size; /* Current size of file */
117: u_quad_t n_brev; /* Modify rev when cached */
118: u_quad_t n_lrev; /* Modify rev for lease */
119: struct vattr n_vattr; /* Vnode attribute cache */
120: time_t n_attrstamp; /* Attr. cache timestamp */
121: time_t n_mtime; /* Prev modify time. */
122: time_t n_ctime; /* Prev create time. */
123: time_t n_expiry; /* Lease expiry time */
124: nfsfh_t *n_fhp; /* NFS File Handle */
125: struct vnode *n_vnode; /* associated vnode */
126: struct lockf *n_lockf; /* Locking record of file */
127: int n_error; /* Save write error value */
128: union {
129: struct timespec nf_atim; /* Special file times */
130: nfsuint64 nd_cookieverf; /* Cookie verifier (dir only) */
131: } n_un1;
132: union {
133: struct timespec nf_mtim;
134: off_t nd_direof; /* Dir. EOF offset cache */
135: } n_un2;
136: union {
137: struct sillyrename *nf_silly; /* Ptr to silly rename struct */
138: LIST_HEAD(, nfsdmap) nd_cook; /* cookies */
139: } n_un3;
140: short n_fhsize; /* size in bytes, of fh */
141: short n_flag; /* Flag for locking.. */
142: nfsfh_t n_fh; /* Small File Handle */
143: };
144:
145: #define n_atim n_un1.nf_atim
146: #define n_mtim n_un2.nf_mtim
147: #define n_sillyrename n_un3.nf_silly
148: #define n_cookieverf n_un1.nd_cookieverf
149: #define n_direofoffset n_un2.nd_direof
150: #define n_cookies n_un3.nd_cook
151:
152: /*
153: * Flags for n_flag
154: */
155: #define NFLUSHWANT 0x0001 /* Want wakeup from a flush in prog. */
156: #define NFLUSHINPROG 0x0002 /* Avoid multiple calls to vinvalbuf() */
157: #define NMODIFIED 0x0004 /* Might have a modified buffer in bio */
158: #define NWRITEERR 0x0008 /* Flag write errors so close will know */
159: #define NQNFSNONCACHE 0x0020 /* Non-cachable lease */
160: #define NQNFSWRITE 0x0040 /* Write lease */
161: #define NQNFSEVICTED 0x0080 /* Has been evicted */
162: #define NACC 0x0100 /* Special file accessed */
163: #define NUPD 0x0200 /* Special file updated */
164: #define NCHG 0x0400 /* Special file times changed */
165: #define NLOCKED 0x0800 /* node is locked */
166: #define NWANTED 0x0100 /* someone wants to lock */
167:
168: /*
169: * Convert between nfsnode pointers and vnode pointers
170: */
171: #define VTONFS(vp) ((struct nfsnode *)(vp)->v_data)
172: #define NFSTOV(np) ((struct vnode *)(np)->n_vnode)
173:
174: /*
175: * Queue head for nfsiod's
176: */
177: extern TAILQ_HEAD(nfs_bufq, buf) nfs_bufq;
178: extern struct proc *nfs_iodwant[NFS_MAXASYNCDAEMON];
179: extern struct nfsmount *nfs_iodmount[NFS_MAXASYNCDAEMON];
180:
181: #if defined(KERNEL) || defined(_KERNEL)
182: typedef int vop_t __P((void *));
183: extern vop_t **fifo_nfsv2nodeop_p;
184: extern vop_t **nfsv2_vnodeop_p;
185: extern vop_t **spec_nfsv2nodeop_p;
186:
187: /*
188: * Prototypes for NFS vnode operations
189: */
190: int nfs_getpages __P((struct vop_getpages_args *));
191: int nfs_write __P((struct vop_write_args *));
192: #define nfs_lease_check ((int (*) __P((struct vop_lease_args *)))nullop)
193: #define nqnfs_vop_lease_check lease_check
194: int nqnfs_vop_lease_check __P((struct vop_lease_args *));
195: #define nfs_revoke vop_revoke
196: #define nfs_seek ((int (*) __P((struct vop_seek_args *)))nullop)
197: int nfs_abortop __P((struct vop_abortop_args *));
198: int nfs_inactive __P((struct vop_inactive_args *));
199: int nfs_reclaim __P((struct vop_reclaim_args *));
200: #define nfs_lock ((int (*) __P((struct vop_lock_args *)))vop_nolock)
201: #define nfs_unlock ((int (*) __P((struct vop_unlock_args *)))vop_nounlock)
202: #define nfs_islocked ((int (*) __P((struct vop_islocked_args *)))vop_noislocked)
203: #define nfs_reallocblks \
204: ((int (*) __P((struct vop_reallocblks_args *)))eopnotsupp)
205:
206: /* other stuff */
207: int nfs_removeit __P((struct sillyrename *));
208: int nfs_nget __P((struct mount *,nfsfh_t *,int,struct nfsnode **));
209: nfsuint64 *nfs_getcookie __P((struct nfsnode *, off_t, int));
210: void nfs_invaldir __P((struct vnode *));
211:
212: #define nqnfs_lease_updatetime lease_updatetime
213:
214: #endif /* KERNEL */
215:
216: #endif
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