1 /* 2 * Copyright (c) 1989, 1993, 1995 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 * @(#)nfs.h 8.4 (Berkeley) 5/1/95 37 * $Id: nfs.h,v 1.44 1998/09/07 05:42:15 bde Exp $ 38 */ 39 40 #ifndef _9FS_H_ 41 #define _9FS_H_ 42 43 #ifdef KERNEL 44 #include "opt_u9fs.h" 45 #endif 46 47 #define U9FS_FABLKSIZE 512 48 #define U9FS_PORT 17008 49 50 /* 51 * U9FS mount option flags 52 */ 53 #define U9FSMNT_SOFT 0x00000001 /* soft mount (hard is default) */ 54 #define U9FSMNT_MAXGRPS 0x00000020 /* set maximum grouplist size */ 55 #define U9FSMNT_INT 0x00000040 /* allow interrupts on hard mount */ 56 #define U9FSMNT_KERB 0x00000400 /* Use Kerberos authentication */ 57 #define U9FSMNT_READAHEAD 0x00002000 /* set read ahead */ 58 59 struct p9user { 60 uid_t p9_uid; 61 char p9_name[U9FS_NAMELEN]; 62 }; 63 64 /* 65 * Arguments to mount 9FS 66 */ 67 #define U9FS_ARGSVERSION 1 /* change when nfs_args changes */ 68 struct u9fs_args { 69 int version; /* args structure version number */ 70 struct sockaddr *addr; /* file server address */ 71 int addrlen; /* length of address */ 72 int sotype; /* Socket type */ 73 int proto; /* and Protocol */ 74 int fhsize; /* Size, in bytes, of fh */ 75 int flags; /* flags */ 76 int wsize; /* write size in bytes */ 77 int rsize; /* read size in bytes */ 78 int readdirsize; /* readdir size in bytes */ 79 char *hostname; /* server's name */ 80 struct sockaddr * authaddr; 81 int authaddrlen; 82 int authsotype; 83 int authsoproto; 84 int nusers; 85 char uname[U9FS_NAMELEN]; 86 char key[U9AUTH_DESKEYLEN]; 87 struct p9user * users; 88 }; 89 90 /* 91 * The u9fsnode is the u9fs equivalent to ufs's inode. Any similarity 92 * is purely coincidental. 93 * There is a unique u9fsnode allocated for each active file, 94 * each current directory, each mounted-on file, text file, and the root. 95 * An u9fsnode is 'named' by its file handle. (nget/u9fs_node.c) 96 * If this structure exceeds 256 bytes (it is currently 256 using 4.4BSD-Lite 97 * type definitions), file handles of > 32 bytes should probably be split out 98 * into a separate MALLOC()'d data structure. (Reduce the size of u9fsfh_t by 99 * changing the definition in u9fsproto.h of U9FS_SMALLFH.) 100 * NB: Hopefully the current order of the fields is such that everything will 101 * be well aligned and, therefore, tightly packed. 102 */ 103 struct u9fsnode { 104 LIST_ENTRY(u9fsnode) n_hash; /* Hash chain */ 105 u_quad_t n_size; /* Current size of file */ 106 u_quad_t n_lrev; /* Modify rev for lease */ 107 struct vattr n_vattr; /* Vnode attribute cache */ 108 time_t n_attrstamp; /* Attr. cache timestamp */ 109 u_int32_t n_mode; /* ACCESS mode cache */ 110 uid_t n_modeuid; /* credentials having mode */ 111 time_t n_modestamp; /* mode cache timestamp */ 112 time_t n_mtime; /* Prev modify time. */ 113 time_t n_ctime; /* Prev create time. */ 114 u_short *n_fid; /* U9FS FID */ 115 struct vnode *n_vnode; /* associated vnode */ 116 struct lockf *n_lockf; /* Locking record of file */ 117 int n_error; /* Save write error value */ 118 #if 0 119 union { 120 struct timespec nf_atim; /* Special file times */ 121 u9fsuint64 nd_cookieverf; /* Cookie verifier (dir only) */ 122 } n_un1; 123 union { 124 struct timespec nf_mtim; 125 off_t nd_direof; /* Dir. EOF offset cache */ 126 } n_un2; 127 union { 128 struct sillyrename *nf_silly; /* Ptr to silly rename struct */ 129 LIST_HEAD(, u9fsdmap) nd_cook; /* cookies */ 130 } n_un3; 131 #endif 132 short n_flag; /* Flag for locking.. */ 133 }; 134 135 #define n_atim n_un1.nf_atim 136 #define n_mtim n_un2.nf_mtim 137 #define n_sillyrename n_un3.nf_silly 138 #define n_cookieverf n_un1.nd_cookieverf 139 #define n_direofoffset n_un2.nd_direof 140 #define n_cookies n_un3.nd_cook 141 142 /* 143 * Flags for n_flag 144 */ 145 #define NFLUSHWANT 0x0001 /* Want wakeup from a flush in prog. */ 146 #define NFLUSHINPROG 0x0002 /* Avoid multiple calls to vinvalbuf() */ 147 #define NMODIFIED 0x0004 /* Might have a modified buffer in bio */ 148 #define NWRITEERR 0x0008 /* Flag write errors so close will know */ 149 #define NQU9FSNONCACHE 0x0020 /* Non-cachable lease */ 150 #define NQU9FSWRITE 0x0040 /* Write lease */ 151 #define NQU9FSEVICTED 0x0080 /* Has been evicted */ 152 #define NACC 0x0100 /* Special file accessed */ 153 #define NUPD 0x0200 /* Special file updated */ 154 #define NCHG 0x0400 /* Special file times changed */ 155 #define NLOCKED 0x0800 /* node is locked */ 156 #define NWANTED 0x0100 /* someone wants to lock */ 157 158 /* 159 * Convert between u9fsnode pointers and vnode pointers 160 */ 161 #define VTOU9FS(vp) ((struct u9fsnode *)(vp)->v_data) 162 #define U9FSTOV(np) ((struct vnode *)(np)->n_vnode) 163 164 /* 165 * Mount structure. 166 * One allocated on every U9FS mount. 167 * Holds U9FS specific information for mount. 168 */ 169 struct u9fsmount { 170 int nm_flag; /* Flags for soft/hard... */ 171 int nm_state; /* Internal state flags */ 172 struct mount *nm_mountp; /* Vfs structure for this filesystem */ 173 int nm_numgrps; /* Max. size of groupslist */ 174 u_short nm_fid; /* fid of root dir */ 175 struct socket *nm_so; /* Rpc socket */ 176 int nm_sotype; /* Type of socket */ 177 int nm_soproto; /* and protocol */ 178 int nm_soflags; /* pr_flags for socket protocol */ 179 struct sockaddr *nm_nam; /* Addr of server */ 180 int nm_sent; /* Request send count */ 181 int nm_cwnd; /* Request send window */ 182 int nm_rsize; /* Max size of read rpc */ 183 int nm_wsize; /* Max size of write rpc */ 184 int nm_readdirsize; /* Size of a readdir rpc */ 185 #if 0 186 struct vnode *nm_inprog; /* Vnode in prog by nqu9fs_clientd() */ 187 uid_t nm_authuid; /* Uid for authenticator */ 188 int nm_authtype; /* Authenticator type */ 189 int nm_authlen; /* and length */ 190 char *nm_authstr; /* Authenticator string */ 191 char *nm_verfstr; /* and the verifier */ 192 int nm_verflen; 193 u_char nm_verf[U9FSX_V3WRITEVERF]; /* V3 write verifier */ 194 U9FSKERBKEY_T nm_key; /* and the session key */ 195 int nm_numuids; /* Number of u9fsuid mappings */ 196 TAILQ_HEAD(, u9fsuid) nm_uidlruhead; /* Lists of u9fsuid mappings */ 197 LIST_HEAD(, u9fsuid) nm_uidhashtbl[U9FS_MUIDHASHSIZ]; 198 TAILQ_HEAD(, buf) nm_bufq; /* async io buffer queue */ 199 short nm_bufqlen; /* number of buffers in queue */ 200 short nm_bufqwant; /* process wants to add to the queue */ 201 int nm_bufqiods; /* number of iods processing queue */ 202 #endif 203 u_int64_t nm_maxfilesize; /* maximum file size */ 204 }; 205 206 #ifdef KERNEL 207 208 #ifdef MALLOC_DECLARE 209 MALLOC_DECLARE(M_U9FSHASH); 210 #endif 211 212 /* 213 * Convert mount ptr to u9fsmount ptr. 214 */ 215 #define VFSTOU9FS(mp) ((struct u9fsmount *)((mp)->mnt_data)) 216 217 #endif /* KERNEL */ 218 219 #endif 220