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1.1 root 1: /*
2: * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
3: *
4: * @APPLE_LICENSE_HEADER_START@
5: *
6: * The contents of this file constitute Original Code as defined in and
7: * are subject to the Apple Public Source License Version 1.1 (the
8: * "License"). You may not use this file except in compliance with the
9: * License. Please obtain a copy of the License at
10: * http://www.apple.com/publicsource and read it before using this file.
11: *
12: * This Original Code and all software distributed under the License are
13: * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
14: * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
15: * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
16: * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the
17: * License for the specific language governing rights and limitations
18: * under the License.
19: *
20: * @APPLE_LICENSE_HEADER_END@
21: */
22: /* Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved */
23: /*
24: * Copyright (c) 1989, 1993
25: * The Regents of the University of California. All rights reserved.
26: *
27: * This code is derived from software contributed to Berkeley by
28: * Rick Macklem at The University of Guelph.
29: *
30: * Redistribution and use in source and binary forms, with or without
31: * modification, are permitted provided that the following conditions
32: * are met:
33: * 1. Redistributions of source code must retain the above copyright
34: * notice, this list of conditions and the following disclaimer.
35: * 2. Redistributions in binary form must reproduce the above copyright
36: * notice, this list of conditions and the following disclaimer in the
37: * documentation and/or other materials provided with the distribution.
38: * 3. All advertising materials mentioning features or use of this software
39: * must display the following acknowledgement:
40: * This product includes software developed by the University of
41: * California, Berkeley and its contributors.
42: * 4. Neither the name of the University nor the names of its contributors
43: * may be used to endorse or promote products derived from this software
44: * without specific prior written permission.
45: *
46: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
47: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
48: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
49: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
50: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
51: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
52: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
53: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
54: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
55: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
56: * SUCH DAMAGE.
57: *
58: * @(#)nfsnode.h 8.9 (Berkeley) 5/14/95
59: * FreeBSD-Id: nfsnode.h,v 1.24 1997/10/28 14:06:25 bde Exp $
60: */
61:
62:
63: #ifndef _NFS_NFSNODE_H_
64: #define _NFS_NFSNODE_H_
65:
66: #ifndef _NFS_NFS_H_
67: #include <nfs/nfs.h>
68: #endif
69:
70: /*
71: * Silly rename structure that hangs off the nfsnode until the name
72: * can be removed by nfs_inactive()
73: */
74: struct sillyrename {
75: struct ucred *s_cred;
76: struct vnode *s_dvp;
77: long s_namlen;
78: char s_name[20];
79: };
80:
81: /*
82: * This structure is used to save the logical directory offset to
83: * NFS cookie mappings.
84: * The mappings are stored in a list headed
85: * by n_cookies, as required.
86: * There is one mapping for each NFS_DIRBLKSIZ bytes of directory information
87: * stored in increasing logical offset byte order.
88: */
89: #define NFSNUMCOOKIES 31
90:
91: struct nfsdmap {
92: LIST_ENTRY(nfsdmap) ndm_list;
93: int ndm_eocookie;
94: nfsuint64 ndm_cookies[NFSNUMCOOKIES];
95: };
96:
97: /*
98: * The nfsnode is the nfs equivalent to ufs's inode. Any similarity
99: * is purely coincidental.
100: * There is a unique nfsnode allocated for each active file,
101: * each current directory, each mounted-on file, text file, and the root.
102: * An nfsnode is 'named' by its file handle. (nget/nfs_node.c)
103: * If this structure exceeds 256 bytes (it is currently 256 using 4.4BSD-Lite
104: * type definitions), file handles of > 32 bytes should probably be split out
105: * into a separate MALLOC()'d data structure. (Reduce the size of nfsfh_t by
106: * changing the definition in sys/mount.h of NFS_SMALLFH.)
107: * NB: Hopefully the current order of the fields is such that everything will
108: * be well aligned and, therefore, tightly packed.
109: */
110: struct nfsnode {
111: LIST_ENTRY(nfsnode) n_hash; /* Hash chain */
112: CIRCLEQ_ENTRY(nfsnode) n_timer; /* Nqnfs timer chain */
113: u_quad_t n_size; /* Current size of file */
114: u_quad_t n_brev; /* Modify rev when cached */
115: u_quad_t n_lrev; /* Modify rev for lease */
116: struct vattr n_vattr; /* Vnode attribute cache */
117: time_t n_attrstamp; /* Attr. cache timestamp */
118: time_t n_mtime; /* Prev modify time. */
119: time_t n_ctime; /* Prev create time. */
120: time_t n_expiry; /* Lease expiry time */
121: nfsfh_t *n_fhp; /* NFS File Handle */
122: struct vnode *n_vnode; /* associated vnode */
123: struct lockf *n_lockf; /* Locking record of file */
124: int n_error; /* Save write error value */
125: union {
126: struct timespec nf_atim; /* Special file times */
127: nfsuint64 nd_cookieverf; /* Cookie verifier (dir only) */
128: } n_un1;
129: union {
130: struct timespec nf_mtim;
131: off_t nd_direof; /* Dir. EOF offset cache */
132: } n_un2;
133: union {
134: struct sillyrename *nf_silly; /* Ptr to silly rename struct */
135: LIST_HEAD(, nfsdmap) nd_cook; /* cookies */
136: } n_un3;
137: short n_fhsize; /* size in bytes, of fh */
138: short n_flag; /* Flag for locking.. */
139: nfsfh_t n_fh; /* Small File Handle */
140: };
141:
142: #define n_atim n_un1.nf_atim
143: #define n_mtim n_un2.nf_mtim
144: #define n_sillyrename n_un3.nf_silly
145: #define n_cookieverf n_un1.nd_cookieverf
146: #define n_direofoffset n_un2.nd_direof
147: #define n_cookies n_un3.nd_cook
148:
149: /*
150: * Flags for n_flag
151: */
152: #define NFLUSHWANT 0x0001 /* Want wakeup from a flush in prog. */
153: #define NFLUSHINPROG 0x0002 /* Avoid multiple calls to vinvalbuf() */
154: #define NMODIFIED 0x0004 /* Might have a modified buffer in bio */
155: #define NWRITEERR 0x0008 /* Flag write errors so close will know */
156: #define NQNFSNONCACHE 0x0020 /* Non-cachable lease */
157: #define NQNFSWRITE 0x0040 /* Write lease */
158: #define NQNFSEVICTED 0x0080 /* Has been evicted */
159: #define NACC 0x0100 /* Special file accessed */
160: #define NUPD 0x0200 /* Special file updated */
161: #define NCHG 0x0400 /* Special file times changed */
162: #define NLOCKED 0x0800 /* node is locked */
163: #define NWANTED 0x0100 /* someone wants to lock */
164:
165: /*
166: * Convert between nfsnode pointers and vnode pointers
167: */
168: #define VTONFS(vp) ((struct nfsnode *)(vp)->v_data)
169: #define NFSTOV(np) ((struct vnode *)(np)->n_vnode)
170:
171: /*
172: * Queue head for nfsiod's
173: */
174: extern TAILQ_HEAD(nfs_bufq, buf) nfs_bufq;
175: extern struct proc *nfs_iodwant[NFS_MAXASYNCDAEMON];
176: extern struct nfsmount *nfs_iodmount[NFS_MAXASYNCDAEMON];
177:
178: #if defined(KERNEL)
179: typedef int vop_t __P((void *));
180: extern vop_t **fifo_nfsv2nodeop_p;
181: extern vop_t **nfsv2_vnodeop_p;
182: extern vop_t **spec_nfsv2nodeop_p;
183:
184: /*
185: * Prototypes for NFS vnode operations
186: */
187: int nfs_getpages __P((struct vop_getpages_args *));
188: int nfs_write __P((struct vop_write_args *));
189: #define nfs_lease_check ((int (*) __P((struct vop_lease_args *)))nullop)
190: #define nqnfs_vop_lease_check lease_check
191: int nqnfs_vop_lease_check __P((struct vop_lease_args *));
192: #define nfs_revoke vop_revoke
193: #define nfs_seek ((int (*) __P((struct vop_seek_args *)))nullop)
194: int nfs_abortop __P((struct vop_abortop_args *));
195: int nfs_inactive __P((struct vop_inactive_args *));
196: int nfs_reclaim __P((struct vop_reclaim_args *));
197: #define nfs_lock ((int (*) __P((struct vop_lock_args *)))vop_nolock)
198: #define nfs_unlock ((int (*) __P((struct vop_unlock_args *)))vop_nounlock)
199: #define nfs_islocked ((int (*) __P((struct vop_islocked_args *)))vop_noislocked)
200: #define nfs_reallocblks \
201: ((int (*) __P((struct vop_reallocblks_args *)))eopnotsupp)
202:
203: /* other stuff */
204: int nfs_removeit __P((struct sillyrename *));
205: int nfs_nget __P((struct mount *,nfsfh_t *,int,struct nfsnode **));
206: nfsuint64 *nfs_getcookie __P((struct nfsnode *, off_t, int));
207: void nfs_invaldir __P((struct vnode *));
208:
209: #define nqnfs_lease_updatetime lease_updatetime
210:
211: #endif /* KERNEL */
212:
213: #endif
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