nfs.h revision 1.3
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 * from: @(#)nfs.h 8.1 (Berkeley) 6/10/93 37 * $Id: nfs.h,v 1.3 1994/06/08 11:36:50 mycroft Exp $ 38 */ 39 40 /* 41 * Tunable constants for nfs 42 */ 43 44 #define NFS_MAXIOVEC 34 45 #define NFS_HZ 25 /* Ticks per second for NFS timeouts */ 46 #define NFS_TIMEO (1*NFS_HZ) /* Default timeout = 1 second */ 47 #define NFS_MINTIMEO (1*NFS_HZ) /* Min timeout to use */ 48 #define NFS_MAXTIMEO (60*NFS_HZ) /* Max timeout to backoff to */ 49 #define NFS_MINIDEMTIMEO (5*NFS_HZ) /* Min timeout for non-idempotent ops*/ 50 #define NFS_MAXREXMIT 100 /* Stop counting after this many */ 51 #define NFS_MAXWINDOW 1024 /* Max number of outstanding requests */ 52 #define NFS_RETRANS 10 /* Num of retrans for soft mounts */ 53 #define NFS_MAXGRPS 16 /* Max. size of groups list */ 54 #define NFS_MINATTRTIMO 5 /* Attribute cache timeout in sec */ 55 #define NFS_MAXATTRTIMO 60 56 #define NFS_WSIZE 8192 /* Def. write data size <= 8192 */ 57 #define NFS_RSIZE 8192 /* Def. read data size <= 8192 */ 58 #define NFS_DEFRAHEAD 1 /* Def. read ahead # blocks */ 59 #define NFS_MAXRAHEAD 4 /* Max. read ahead # blocks */ 60 #define NFS_MAXREADDIR NFS_MAXDATA /* Max. size of directory read */ 61 #define NFS_MAXUIDHASH 64 /* Max. # of hashed uid entries/mp */ 62 #define NFS_MAXASYNCDAEMON 20 /* Max. number async_daemons runable */ 63 #define NFS_DIRBLKSIZ 1024 /* Size of an NFS directory block */ 64 #define NMOD(a) ((a) % nfs_asyncdaemons) 65 66 /* 67 * Set the attribute timeout based on how recently the file has been modified. 68 */ 69 #define NFS_ATTRTIMEO(np) \ 70 ((((np)->n_flag & NMODIFIED) || \ 71 (time.tv_sec - (np)->n_mtime) / 10 < NFS_MINATTRTIMO) ? NFS_MINATTRTIMO : \ 72 ((time.tv_sec - (np)->n_mtime) / 10 > NFS_MAXATTRTIMO ? NFS_MAXATTRTIMO : \ 73 (time.tv_sec - (np)->n_mtime) / 10)) 74 75 /* 76 * Structures for the nfssvc(2) syscall. Not that anyone but nfsd and mount_nfs 77 * should ever try and use it. 78 */ 79 struct nfsd_args { 80 int sock; /* Socket to serve */ 81 caddr_t name; /* Client address for connection based sockets */ 82 int namelen; /* Length of name */ 83 }; 84 85 struct nfsd_srvargs { 86 struct nfsd *nsd_nfsd; /* Pointer to in kernel nfsd struct */ 87 uid_t nsd_uid; /* Effective uid mapped to cred */ 88 u_long nsd_haddr; /* Ip address of client */ 89 struct ucred nsd_cr; /* Cred. uid maps to */ 90 int nsd_authlen; /* Length of auth string (ret) */ 91 char *nsd_authstr; /* Auth string (ret) */ 92 }; 93 94 struct nfsd_cargs { 95 char *ncd_dirp; /* Mount dir path */ 96 uid_t ncd_authuid; /* Effective uid */ 97 int ncd_authtype; /* Type of authenticator */ 98 int ncd_authlen; /* Length of authenticator string */ 99 char *ncd_authstr; /* Authenticator string */ 100 }; 101 102 /* 103 * Stats structure 104 */ 105 struct nfsstats { 106 int attrcache_hits; 107 int attrcache_misses; 108 int lookupcache_hits; 109 int lookupcache_misses; 110 int direofcache_hits; 111 int direofcache_misses; 112 int biocache_reads; 113 int read_bios; 114 int read_physios; 115 int biocache_writes; 116 int write_bios; 117 int write_physios; 118 int biocache_readlinks; 119 int readlink_bios; 120 int biocache_readdirs; 121 int readdir_bios; 122 int rpccnt[NFS_NPROCS]; 123 int rpcretries; 124 int srvrpccnt[NFS_NPROCS]; 125 int srvrpc_errs; 126 int srv_errs; 127 int rpcrequests; 128 int rpctimeouts; 129 int rpcunexpected; 130 int rpcinvalid; 131 int srvcache_inproghits; 132 int srvcache_idemdonehits; 133 int srvcache_nonidemdonehits; 134 int srvcache_misses; 135 int srvnqnfs_leases; 136 int srvnqnfs_maxleases; 137 int srvnqnfs_getleases; 138 }; 139 140 /* 141 * Flags for nfssvc() system call. 142 */ 143 #define NFSSVC_BIOD 0x002 144 #define NFSSVC_NFSD 0x004 145 #define NFSSVC_ADDSOCK 0x008 146 #define NFSSVC_AUTHIN 0x010 147 #define NFSSVC_GOTAUTH 0x040 148 #define NFSSVC_AUTHINFAIL 0x080 149 #define NFSSVC_MNTD 0x100 150 151 /* 152 * The set of signals the interrupt an I/O in progress for NFSMNT_INT mounts. 153 * What should be in this set is open to debate, but I believe that since 154 * I/O system calls on ufs are never interrupted by signals the set should 155 * be minimal. My reasoning is that many current programs that use signals 156 * such as SIGALRM will not expect file I/O system calls to be interrupted 157 * by them and break. 158 */ 159 #ifdef KERNEL 160 #define NFSINT_SIGMASK (sigmask(SIGINT)|sigmask(SIGTERM)|sigmask(SIGKILL)| \ 161 sigmask(SIGHUP)|sigmask(SIGQUIT)) 162 163 /* 164 * Socket errors ignored for connectionless sockets?? 165 * For now, ignore them all 166 */ 167 #define NFSIGNORE_SOERROR(s, e) \ 168 ((e) != EINTR && (e) != ERESTART && (e) != EWOULDBLOCK && \ 169 ((s) & PR_CONNREQUIRED) == 0) 170 171 /* 172 * Nfs outstanding request list element 173 */ 174 struct nfsreq { 175 struct nfsreq *r_next; 176 struct nfsreq *r_prev; 177 struct mbuf *r_mreq; 178 struct mbuf *r_mrep; 179 struct mbuf *r_md; 180 caddr_t r_dpos; 181 struct nfsmount *r_nmp; 182 struct vnode *r_vp; 183 u_long r_xid; 184 int r_flags; /* flags on request, see below */ 185 int r_retry; /* max retransmission count */ 186 int r_rexmit; /* current retrans count */ 187 int r_timer; /* tick counter on reply */ 188 int r_procnum; /* NFS procedure number */ 189 int r_rtt; /* RTT for rpc */ 190 struct proc *r_procp; /* Proc that did I/O system call */ 191 }; 192 193 /* Flag values for r_flags */ 194 #define R_TIMING 0x01 /* timing request (in mntp) */ 195 #define R_SENT 0x02 /* request has been sent */ 196 #define R_SOFTTERM 0x04 /* soft mnt, too many retries */ 197 #define R_INTR 0x08 /* intr mnt, signal pending */ 198 #define R_SOCKERR 0x10 /* Fatal error on socket */ 199 #define R_TPRINTFMSG 0x20 /* Did a tprintf msg. */ 200 #define R_MUSTRESEND 0x40 /* Must resend request */ 201 #define R_GETONEREP 0x80 /* Probe for one reply only */ 202 203 struct nfsstats nfsstats; 204 205 /* 206 * A list of nfssvc_sock structures is maintained with all the sockets 207 * that require service by the nfsd. 208 * The nfsuid structs hang off of the nfssvc_sock structs in both lru 209 * and uid hash lists. 210 */ 211 #define NUIDHASHSIZ 32 212 #define NUIDHASH(uid) ((uid) & (NUIDHASHSIZ - 1)) 213 214 /* 215 * Network address hash list element 216 */ 217 union nethostaddr { 218 u_long had_inetaddr; 219 struct mbuf *had_nam; 220 }; 221 222 struct nfsuid { 223 struct nfsuid *nu_lrunext; /* MUST be first */ 224 struct nfsuid *nu_lruprev; 225 struct nfsuid *nu_hnext; 226 struct nfsuid *nu_hprev; 227 int nu_flag; /* Flags */ 228 uid_t nu_uid; /* Uid mapped by this entry */ 229 union nethostaddr nu_haddr; /* Host addr. for dgram sockets */ 230 struct ucred nu_cr; /* Cred uid mapped to */ 231 }; 232 233 #define nu_inetaddr nu_haddr.had_inetaddr 234 #define nu_nam nu_haddr.had_nam 235 /* Bits for nu_flag */ 236 #define NU_INETADDR 0x1 237 238 struct nfssvc_sock { 239 struct nfsuid *ns_lrunext; /* MUST be first */ 240 struct nfsuid *ns_lruprev; 241 struct nfssvc_sock *ns_next; 242 struct nfssvc_sock *ns_prev; 243 int ns_flag; 244 u_long ns_sref; 245 struct file *ns_fp; 246 struct socket *ns_so; 247 int ns_solock; 248 struct mbuf *ns_nam; 249 int ns_cc; 250 struct mbuf *ns_raw; 251 struct mbuf *ns_rawend; 252 int ns_reclen; 253 struct mbuf *ns_rec; 254 struct mbuf *ns_recend; 255 int ns_numuids; 256 struct nfsuid *ns_uidh[NUIDHASHSIZ]; 257 }; 258 259 /* Bits for "ns_flag" */ 260 #define SLP_VALID 0x01 261 #define SLP_DOREC 0x02 262 #define SLP_NEEDQ 0x04 263 #define SLP_DISCONN 0x08 264 #define SLP_GETSTREAM 0x10 265 #define SLP_INIT 0x20 266 #define SLP_WANTINIT 0x40 267 268 #define SLP_ALLFLAGS 0xff 269 270 /* 271 * One of these structures is allocated for each nfsd. 272 */ 273 struct nfsd { 274 struct nfsd *nd_next; /* Must be first */ 275 struct nfsd *nd_prev; 276 int nd_flag; /* NFSD_ flags */ 277 struct nfssvc_sock *nd_slp; /* Current socket */ 278 struct mbuf *nd_nam; /* Client addr for datagram req. */ 279 struct mbuf *nd_mrep; /* Req. mbuf list */ 280 struct mbuf *nd_md; 281 caddr_t nd_dpos; /* Position in list */ 282 int nd_procnum; /* RPC procedure number */ 283 u_long nd_retxid; /* RPC xid */ 284 int nd_repstat; /* Reply status value */ 285 struct ucred nd_cr; /* Credentials for req. */ 286 int nd_nqlflag; /* Leasing flag */ 287 int nd_duration; /* Lease duration */ 288 int nd_authlen; /* Authenticator len */ 289 u_char nd_authstr[RPCAUTH_MAXSIZ]; /* Authenticator data */ 290 struct proc *nd_procp; /* Proc ptr */ 291 }; 292 293 #define NFSD_WAITING 0x01 294 #define NFSD_CHECKSLP 0x02 295 #define NFSD_REQINPROG 0x04 296 #define NFSD_NEEDAUTH 0x08 297 #define NFSD_AUTHFAIL 0x10 298 #endif /* KERNEL */ 299
Indexes created Wed Sep 24 15:09:51 GMT 2025