Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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FreeBSD/Linux Kernel Cross Reference
sys/nfs/nfs_var.h
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1 /* $NetBSD: nfs_var.h,v 1.96 2022/04/27 17:38:52 hannken Exp $ */ 2 3 /*- 4 * Copyright (c) 1996 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Christos Zoulas. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 /* 33 * XXX needs <nfs/rpcv2.h> and <nfs/nfs.h> because of typedefs 34 */ 35 36 #ifdef _KERNEL 37 #include <sys/mallocvar.h> 38 #include <sys/pool.h> 39 40 struct vnode; 41 struct uio; 42 struct proc; 43 struct buf; 44 struct nfs_diskless; 45 struct sockaddr_in; 46 struct nfs_dlmount; 47 struct vnode; 48 struct nfsd; 49 struct mbuf; 50 struct file; 51 struct nfssvc_sock; 52 struct nfsmount; 53 struct socket; 54 struct nfsreq; 55 struct vattr; 56 struct nameidata; 57 struct nfsnode; 58 struct sillyrename; 59 struct componentname; 60 struct nfsd_srvargs; 61 struct nfsrv_descript; 62 struct nfs_fattr; 63 struct nfsdircache; 64 union nethostaddr; 65 66 /* nfs_bio.c */ 67 int nfs_bioread(struct vnode *, struct uio *, int, kauth_cred_t, int); 68 struct buf *nfs_getcacheblk(struct vnode *, daddr_t, int, struct lwp *); 69 int nfs_vinvalbuf(struct vnode *, int, kauth_cred_t, struct lwp *, int); 70 int nfs_flushstalebuf(struct vnode *, kauth_cred_t, struct lwp *, int); 71 #define NFS_FLUSHSTALEBUF_MYWRITE 1 /* assume writes are ours */ 72 int nfs_asyncio(struct buf *); 73 int nfs_doio(struct buf *); 74 75 /* nfs_boot.c */ 76 /* see nfsdiskless.h */ 77 78 /* nfs_kq.c */ 79 void nfs_kqinit(void); 80 void nfs_kqfini(void); 81 82 /* nfs_node.c */ 83 void nfs_node_init(void); 84 void nfs_node_done(void); 85 86 int nfs_nget1(struct mount *, nfsfh_t *, int, struct nfsnode **, int); 87 #define nfs_nget(mp, fhp, fhsize, npp) \ 88 nfs_nget1((mp), (fhp), (fhsize), (npp), 0) 89 90 /* nfs_vnops.c */ 91 int nfs_null(struct vnode *, kauth_cred_t, struct lwp *); 92 int nfs_setattrrpc(struct vnode *, struct vattr *, kauth_cred_t, struct lwp *); 93 int nfs_readlinkrpc(struct vnode *, struct uio *, kauth_cred_t); 94 int nfs_readrpc(struct vnode *, struct uio *); 95 int nfs_writerpc(struct vnode *, struct uio *, int *, bool, bool *); 96 int nfs_mknodrpc(struct vnode *, struct vnode **, struct componentname *, 97 struct vattr *); 98 int nfs_removeit(struct sillyrename *); 99 int nfs_removerpc(struct vnode *, const char *, int, kauth_cred_t, 100 struct lwp *); 101 int nfs_renameit(struct vnode *, struct componentname *, struct sillyrename *); 102 int nfs_renamerpc(struct vnode *, const char *, int, struct vnode *, 103 const char *, int, kauth_cred_t, struct lwp *); 104 int nfs_readdirrpc(struct vnode *, struct uio *, kauth_cred_t); 105 int nfs_readdirplusrpc(struct vnode *, struct uio *, kauth_cred_t); 106 int nfs_sillyrename(struct vnode *, struct vnode *, struct componentname *, 107 bool); 108 int nfs_lookitup(struct vnode *, const char *, int, kauth_cred_t, 109 struct lwp *, struct nfsnode **); 110 int nfs_commit(struct vnode *, off_t, uint32_t, struct lwp *); 111 int nfs_flush(struct vnode *, kauth_cred_t, int, struct lwp *, int); 112 113 /* nfs_serv.c */ 114 int nfsrv3_access(struct nfsrv_descript *, struct nfssvc_sock *, 115 struct lwp *, struct mbuf **); 116 int nfsrv_getattr(struct nfsrv_descript *, struct nfssvc_sock *, 117 struct lwp *, struct mbuf **); 118 int nfsrv_setattr(struct nfsrv_descript *, struct nfssvc_sock *, 119 struct lwp *, struct mbuf **); 120 int nfsrv_lookup(struct nfsrv_descript *, struct nfssvc_sock *, 121 struct lwp *, struct mbuf **); 122 int nfsrv_readlink(struct nfsrv_descript *, struct nfssvc_sock *, 123 struct lwp *, struct mbuf **); 124 int nfsrv_read(struct nfsrv_descript *, struct nfssvc_sock *, 125 struct lwp *, struct mbuf **); 126 int nfsrv_write(struct nfsrv_descript *, struct nfssvc_sock *, 127 struct lwp *, struct mbuf **); 128 int nfsrv_writegather(struct nfsrv_descript **, struct nfssvc_sock *, 129 struct lwp *, struct mbuf **); 130 void nfsrvw_coalesce(struct nfsrv_descript *, struct nfsrv_descript *); 131 int nfsrv_create(struct nfsrv_descript *, struct nfssvc_sock *, 132 struct lwp *, struct mbuf **); 133 int nfsrv_mknod(struct nfsrv_descript *, struct nfssvc_sock *, 134 struct lwp *, struct mbuf **); 135 int nfsrv_remove(struct nfsrv_descript *, struct nfssvc_sock *, 136 struct lwp *, struct mbuf **); 137 int nfsrv_rename(struct nfsrv_descript *, struct nfssvc_sock *, 138 struct lwp *, struct mbuf **); 139 int nfsrv_link(struct nfsrv_descript *, struct nfssvc_sock *, 140 struct lwp *, struct mbuf **); 141 int nfsrv_symlink(struct nfsrv_descript *, struct nfssvc_sock *, 142 struct lwp *, struct mbuf **); 143 int nfsrv_mkdir(struct nfsrv_descript *, struct nfssvc_sock *, 144 struct lwp *, struct mbuf **); 145 int nfsrv_rmdir(struct nfsrv_descript *, struct nfssvc_sock *, 146 struct lwp *, struct mbuf **); 147 int nfsrv_readdir(struct nfsrv_descript *, struct nfssvc_sock *, 148 struct lwp *, struct mbuf **); 149 int nfsrv_readdirplus(struct nfsrv_descript *, struct nfssvc_sock *, 150 struct lwp *, struct mbuf **); 151 int nfsrv_commit(struct nfsrv_descript *, struct nfssvc_sock *, 152 struct lwp *, struct mbuf **); 153 int nfsrv_statfs(struct nfsrv_descript *, struct nfssvc_sock *, 154 struct lwp *, struct mbuf **); 155 int nfsrv_fsinfo(struct nfsrv_descript *, struct nfssvc_sock *, 156 struct lwp *, struct mbuf **); 157 int nfsrv_pathconf(struct nfsrv_descript *, struct nfssvc_sock *, 158 struct lwp *, struct mbuf **); 159 int nfsrv_null(struct nfsrv_descript *, struct nfssvc_sock *, 160 struct lwp *, struct mbuf **); 161 int nfsrv_noop(struct nfsrv_descript *, struct nfssvc_sock *, 162 struct lwp *, struct mbuf **); 163 int nfsrv_access(struct vnode *, int, kauth_cred_t, int, struct lwp *, int); 164 165 /* nfs_socket.c */ 166 int nfs_connect(struct nfsmount *, struct nfsreq *, struct lwp *); 167 int nfs_reconnect(struct nfsreq *); 168 void nfs_disconnect(struct nfsmount *); 169 void nfs_safedisconnect(struct nfsmount *); 170 int nfs_send(struct socket *, struct mbuf *, struct mbuf *, struct nfsreq *, 171 struct lwp *); 172 int nfs_request(struct nfsnode *, struct mbuf *, int, struct lwp *, 173 kauth_cred_t, struct mbuf **, struct mbuf **, char **, int *); 174 int nfs_rephead(int, struct nfsrv_descript *, struct nfssvc_sock *, 175 int, int, u_quad_t *, struct mbuf **, struct mbuf **, char **); 176 void nfs_timer(void *); 177 void nfs_timer_init(void); 178 void nfs_timer_fini(void); 179 void nfs_timer_start(void); 180 void nfs_timer_srvinit(bool (*)(void)); 181 void nfs_timer_srvfini(void); 182 int nfs_sigintr(struct nfsmount *, struct nfsreq *, struct lwp *); 183 int nfs_getreq(struct nfsrv_descript *, struct nfsd *, int); 184 int nfs_msg(struct lwp *, const char *, const char *); 185 void nfsrv_soupcall(struct socket *, void *, int, int); 186 void nfsrv_rcv(struct nfssvc_sock *); 187 int nfsrv_getstream(struct nfssvc_sock *, int); 188 int nfsrv_dorec(struct nfssvc_sock *, struct nfsd *, struct nfsrv_descript **, 189 bool *); 190 void nfsrv_wakenfsd(struct nfssvc_sock *); 191 int nfsdsock_lock(struct nfssvc_sock *, bool); 192 void nfsdsock_unlock(struct nfssvc_sock *); 193 int nfsdsock_drain(struct nfssvc_sock *); 194 int nfsdsock_sendreply(struct nfssvc_sock *, struct nfsrv_descript *); 195 void nfsdreq_init(void); 196 void nfsdreq_fini(void); 197 struct nfsrv_descript *nfsdreq_alloc(void); 198 void nfsdreq_free(struct nfsrv_descript *); 199 bool nfsrv_timer(void); 200 int nfs_rcvlock(struct nfsmount *, struct nfsreq *); 201 void nfs_rcvunlock(struct nfsmount *); 202 203 void nfsdsock_setbits(struct nfssvc_sock *, int); 204 void nfsdsock_clearbits(struct nfssvc_sock *, int); 205 bool nfsdsock_testbits(struct nfssvc_sock *, int); 206 207 /* 208 * Estimate rto for an nfs rpc sent via. an unreliable datagram. 209 * Use the mean and mean deviation of rtt for the appropriate type of rpc 210 * for the frequent rpcs and a default for the others. 211 * The justification for doing "other" this way is that these rpcs 212 * happen so infrequently that timer est. would probably be stale. 213 * Also, since many of these rpcs are 214 * non-idempotent, a conservative timeout is desired. 215 * getattr, lookup - A+2D 216 * read, write - A+4D 217 * other - nm_timeo 218 */ 219 #define NFS_RTO(n, t) \ 220 ((t) == 0 ? (n)->nm_timeo : \ 221 ((t) < 3 ? \ 222 (((((n)->nm_srtt[t-1] + 3) >> 2) + (n)->nm_sdrtt[t-1] + 1) >> 1) : \ 223 ((((n)->nm_srtt[t-1] + 7) >> 3) + (n)->nm_sdrtt[t-1] + 1))) 224 #define NFS_SRTT(r) (r)->r_nmp->nm_srtt[nfs_proct[(r)->r_procnum] - 1] 225 #define NFS_SDRTT(r) (r)->r_nmp->nm_sdrtt[nfs_proct[(r)->r_procnum] - 1] 226 227 extern int nfsrtton; 228 extern struct nfsrtt nfsrtt; 229 extern const int nfs_proct[]; 230 231 extern const struct timeval nfs_err_interval; 232 extern struct timeval nfs_reply_last_err_time; 233 extern struct timeval nfs_timer_last_err_time; 234 235 236 /* nfs_srvcache.c */ 237 void nfsrv_initcache(void); 238 void nfsrv_finicache(void); 239 int nfsrv_getcache(struct nfsrv_descript *, struct nfssvc_sock *, 240 struct mbuf **); 241 void nfsrv_updatecache(struct nfsrv_descript *, int, struct mbuf *); 242 void nfsrv_cleancache(void); 243 244 /* nfs_subs.c */ 245 struct mbuf *nfsm_reqh(struct nfsnode *, u_long, int, char **); 246 struct mbuf *nfsm_rpchead(kauth_cred_t, int, int, int, int, char *, int, 247 char *, struct mbuf *, int, struct mbuf **, u_int32_t *); 248 int nfsm_mbuftouio(struct mbuf **, struct uio *, int, char **); 249 int nfsm_uiotombuf(struct uio *, struct mbuf **, int, char **); 250 int nfsm_disct(struct mbuf **, char **, int, int, char **); 251 int nfs_adv(struct mbuf **, char **, int, int); 252 int nfsm_strtmbuf(struct mbuf **, char **, const char *, long); 253 u_long nfs_dirhash(off_t); 254 void nfs_initdircache(struct vnode *); 255 void nfs_initdirxlatecookie(struct vnode *); 256 struct nfsdircache *nfs_searchdircache(struct vnode *, off_t, int, int *); 257 struct nfsdircache *nfs_enterdircache(struct vnode *, off_t, off_t, int, 258 daddr_t); 259 void nfs_putdircache(struct nfsnode *, struct nfsdircache *); 260 void nfs_invaldircache(struct vnode *, int); 261 #define NFS_INVALDIRCACHE_FORCE 1 262 #define NFS_INVALDIRCACHE_KEEPEOF 2 263 void nfs_init(void); 264 void nfs_fini(void); 265 int nfsm_loadattrcache(struct vnode **, struct mbuf **, char **, 266 struct vattr *, int flags); 267 int nfs_loadattrcache(struct vnode **, struct nfs_fattr *, struct vattr *, 268 int flags); 269 int nfs_getattrcache(struct vnode *, struct vattr *); 270 void nfs_delayedtruncate(struct vnode *); 271 int nfs_check_wccdata(struct nfsnode *, const struct timespec *, 272 struct timespec *, bool); 273 int nfs_namei(struct nameidata *, nfsrvfh_t *, uint32_t, struct nfssvc_sock *, 274 struct mbuf *, struct mbuf **, char **, struct vnode **, 275 int *, struct vattr *, struct lwp *, int, int); 276 void nfs_zeropad(struct mbuf *, int, int); 277 void nfsm_srvwcc(struct nfsrv_descript *, int, struct vattr *, int, 278 struct vattr *, struct mbuf **, char **); 279 void nfsm_srvpostopattr(struct nfsrv_descript *, int, struct vattr *, 280 struct mbuf **, char **); 281 void nfsm_srvfattr(struct nfsrv_descript *, struct vattr *, struct nfs_fattr *); 282 int nfsrv_fhtovp(nfsrvfh_t *, int, struct vnode **, kauth_cred_t, 283 struct nfssvc_sock *, struct mbuf *, int *, int, int); 284 int nfs_ispublicfh(const nfsrvfh_t *); 285 int netaddr_match(int, union nethostaddr *, struct mbuf *); 286 time_t nfs_attrtimeo(struct nfsmount *, struct nfsnode *); 287 288 /* flags for nfs_loadattrcache and friends */ 289 #define NAC_NOTRUNC 1 /* don't truncate file size */ 290 291 void nfs_clearcommit(struct mount *); 292 void nfs_merge_commit_ranges(struct vnode *); 293 int nfs_in_committed_range(struct vnode *, off_t, off_t); 294 int nfs_in_tobecommitted_range(struct vnode *, off_t, off_t); 295 void nfs_add_committed_range(struct vnode *, off_t, off_t); 296 void nfs_del_committed_range(struct vnode *, off_t, off_t); 297 void nfs_add_tobecommitted_range(struct vnode *, off_t, off_t); 298 void nfs_del_tobecommitted_range(struct vnode *, off_t, off_t); 299 300 int nfsrv_errmap(struct nfsrv_descript *, int); 301 void nfs_cookieheuristic(struct vnode *, int *, struct lwp *, kauth_cred_t); 302 303 u_int32_t nfs_getxid(void); 304 void nfs_renewxid(struct nfsreq *); 305 306 int nfsrv_composefh(struct vnode *, nfsrvfh_t *, bool); 307 int nfsrv_comparefh(const nfsrvfh_t *, const nfsrvfh_t *); 308 void nfsrv_copyfh(nfsrvfh_t *, const nfsrvfh_t *); 309 310 extern const enum vtype nv2tov_type[8]; 311 extern const enum vtype nv3tov_type[8]; 312 313 extern u_int32_t rpc_reply, rpc_msgdenied, rpc_mismatch, rpc_vers, 314 rpc_auth_unix, rpc_msgaccepted, rpc_call, rpc_autherr, 315 rpc_auth_kerb; 316 extern u_int32_t nfs_prog; 317 extern const int nfsv3_procid[NFS_NPROCS]; 318 extern int nfs_ticks; 319 320 /* nfs_syscalls.c */ 321 struct sys_getfh_args; 322 struct sys_nfssvc_args; 323 int sys_getfh(struct lwp *, const struct sys_getfh_args *, register_t *); 324 int sys_nfssvc(struct lwp *, const struct sys_nfssvc_args *, register_t *); 325 int nfssvc_addsock(struct file *, struct mbuf *); 326 void nfsrv_zapsock(struct nfssvc_sock *); 327 void nfsrv_slpderef(struct nfssvc_sock *); 328 void nfsrv_init(int); 329 void nfsrv_fini(void); 330 void nfs_iodinit(void); 331 void nfs_iodfini(void); 332 int nfs_iodbusy(struct nfsmount *); 333 int nfs_set_niothreads(int); 334 int nfs_getauth(struct nfsmount *, struct nfsreq *, kauth_cred_t, char **, 335 int *, char *, int *, NFSKERBKEY_T); 336 int nfs_getnickauth(struct nfsmount *, kauth_cred_t, char **, int *, char *, 337 int); 338 int nfs_savenickauth(struct nfsmount *, kauth_cred_t, int, NFSKERBKEY_T, 339 struct mbuf **, char **, struct mbuf *); 340 /* 341 * Backend copyin/out functions for nfssvc(2), so that netbsd32 can 342 * easily access NFS. Each operation either must perform a copyin or 343 * copyout of the right data for the emulation. exp_in() takes a count 344 * of the number of export_args to copyin, and order arguments for 345 * func(dst, src). 346 */ 347 struct nfssvc_copy_ops { 348 int (*addsock_in)(struct nfsd_args *, const void *); 349 int (*setexports_in)(struct mountd_exports_list *, const void *); 350 int (*nsd_in)(struct nfsd_srvargs *, const void *); 351 int (*nsd_out)(void *, const struct nfsd_srvargs *); 352 int (*exp_in)(struct export_args *, const void *, size_t); 353 }; 354 int do_nfssvc(struct nfssvc_copy_ops *, struct lwp *, int, void *, register_t *); 355 356 /* nfs_export.c */ 357 extern struct nfs_public nfs_pub; 358 int mountd_set_exports_list(const struct mountd_exports_list *, struct lwp *, 359 struct mount *, int); 360 int netexport_check(const fsid_t *, struct mbuf *, struct mount **, int *, 361 kauth_cred_t *); 362 void netexport_rdlock(void); 363 void netexport_rdunlock(void); 364 void netexport_init(void); 365 void netexport_fini(void); 366 bool netexport_hasexports(void); 367 #endif /* _KERNEL */
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