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Clean up merge problems with illumos#11083 (nfs-zone)
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--- old/usr/src/uts/common/klm/nlm_impl.h
+++ new/usr/src/uts/common/klm/nlm_impl.h
1 1 /*
2 2 * Copyright (c) 2008 Isilon Inc http://www.isilon.com/
3 3 * Authors: Doug Rabson <dfr@rabson.org>
4 4 * Developed with Red Inc: Alfred Perlstein <alfred@freebsd.org>
5 5 *
6 6 * Redistribution and use in source and binary forms, with or without
7 7 * modification, are permitted provided that the following conditions
8 8 * are met:
9 9 * 1. Redistributions of source code must retain the above copyright
10 10 * notice, this list of conditions and the following disclaimer.
11 11 * 2. Redistributions in binary form must reproduce the above copyright
12 12 * notice, this list of conditions and the following disclaimer in the
13 13 * documentation and/or other materials provided with the distribution.
14 14 *
15 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16 16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 25 * SUCH DAMAGE.
26 26 *
27 27 * $FreeBSD$
28 28 */
29 29
30 30 /*
31 31 * Copyright 2012 Nexenta Systems, Inc. All rights reserved.
32 32 * Copyright (c) 2012 by Delphix. All rights reserved.
33 33 * Copyright 2016 Joyent, Inc.
34 34 */
35 35
36 36 /*
37 37 * NFS Lock Manager (NLM) private declarations, etc.
38 38 *
39 39 * Source code derived from FreeBSD nlm.h
40 40 */
41 41
42 42 #ifndef _NLM_NLM_H_
43 43 #define _NLM_NLM_H_
44 44
45 45 #include <sys/cmn_err.h>
46 46 #include <sys/queue.h>
47 47 #include <sys/modhash.h>
48 48 #include <sys/avl.h>
49 49
50 50 #define RPC_MSGOUT(args...) cmn_err(CE_NOTE, args)
51 51 #define NLM_ERR(...) cmn_err(CE_NOTE, __VA_ARGS__)
52 52 #define NLM_WARN(...) cmn_err(CE_WARN, __VA_ARGS__)
53 53
54 54 #ifndef SEEK_SET
55 55 #define SEEK_SET 0
56 56 #endif
57 57 #ifndef SEEK_CUR
58 58 #define SEEK_CUR 1
59 59 #endif
60 60 #ifndef SEEK_END
61 61 #define SEEK_END 2
62 62 #endif
63 63
64 64 /*
65 65 * Maximum offset supported by NLM calls using the older
66 66 * (32-bit) versions of the protocol.
67 67 */
68 68 #define MAX_UOFF32 0xffffffffULL
69 69
70 70 struct nlm_host;
71 71 struct vnode;
72 72 struct exportinfo;
73 73 struct shrlock;
74 74 struct _kthread;
75 75
76 76 /*
77 77 * How to read the code: probably the best point to start
78 78 * it the nlm_host structure that is sort of most major
79 79 * structure in klmmod. nlm_host is closely tied with all
80 80 * other NLM structures.
81 81 *
82 82 * There're three major locks we use inside NLM:
83 83 * 1) Global read-write lock (lm_lck) that is used to
84 84 * protect operations with sysid allocation and
85 85 * management of zone globals structures for each
86 86 * zone.
87 87 * 2) Zone global lock: (nlm_globals->lock) is a mutex
88 88 * used to protect all operations inside particular
89 89 * zone.
90 90 * 3) Host's lock: (nlm_host->nh_lock) is per-host mutex
91 91 * used to protect host's internal fields and all
92 92 * operations with the given host.
93 93 *
94 94 * Locks order _must_ obey the following scheme:
95 95 * lm_lck then nlm_globals->lock then nlm_host->nh_lock
96 96 *
97 97 * Locks:
98 98 * (g) locked by lm_lck
99 99 * (z) locked by nlm_globals->lock
100 100 * (l) locked by host->nh_lock
101 101 * (c) const until freeing
102 102 */
103 103
104 104 /*
105 105 * Callback functions for nlm_do_lock() and others.
106 106 *
107 107 * Calls to nlm_do_lock are unusual, because it needs to handle
108 108 * the reply itself, instead of letting it happen the normal way.
109 109 * It also needs to make an RPC call _back_ to the client when a
110 110 * blocked lock request completes.
111 111 *
112 112 * We pass three callback functions to nlm_do_lock:
113 113 * nlm_reply_cb: send a normal RPC reply
114 114 * nlm_res_cb: do a _res (message style) RPC (call)
115 115 * nlm_testargs_cb: do a "granted" RPC call (after blocking)
116 116 * Only one of the 1st or 2nd is used.
117 117 * The 3rd is used only for blocking
118 118 *
119 119 * We also use callback functions for all the _msg variants
120 120 * of the NLM svc calls, where the reply is a reverse call.
121 121 * The nlm_testres_cb is used by the _test_msg svc calls.
122 122 * The nlm_res_cb type is used by the other _msg calls.
123 123 */
124 124 typedef bool_t (*nlm_reply_cb)(SVCXPRT *, nlm4_res *);
125 125 typedef enum clnt_stat (*nlm_res_cb)(nlm4_res *, void *, CLIENT *);
126 126 typedef enum clnt_stat (*nlm_testargs_cb)(nlm4_testargs *, void *, CLIENT *);
127 127 typedef enum clnt_stat (*nlm_testres_cb)(nlm4_testres *, void *, CLIENT *);
128 128
129 129 /*
130 130 * NLM sleeping lock request.
131 131 *
132 132 * Sleeping lock requests are server side only objects
133 133 * that are created when client asks server to add new
134 134 * sleeping lock and when this lock needs to block.
135 135 * Server keeps a track of these requests in order to be
136 136 * able to cancel them or clean them up.
137 137 *
138 138 * Sleeping lock requests are closely tiled with particular
139 139 * vnode or, strictly speaking, NLM vhold object that holds
140 140 * the vnode.
141 141 *
142 142 * struct nlm_slreq:
143 143 * nsr_fl: an information about file lock
144 144 * nsr_link: a list node to store lock requests
145 145 * in vhold object.
146 146 */
147 147 struct nlm_slreq {
148 148 struct flock64 nsr_fl;
149 149 TAILQ_ENTRY(nlm_slreq) nsr_link;
150 150 };
151 151 TAILQ_HEAD(nlm_slreq_list, nlm_slreq);
152 152
153 153 /*
154 154 * NLM vhold object is a sort of wrapper on vnodes remote
155 155 * clients have locked (or added share reservation)
156 156 * on NLM server. Vhold keeps vnode held (by VN_HOLD())
157 157 * while vnode has any locks or shares made by parent host.
158 158 * Vholds are used for two purposes:
159 159 * 1) Hold vnode (with VN_HOLD) while it has any locks;
160 160 * 2) Keep a track of all vnodes remote host touched
161 161 * with lock/share operations on NLM server, so that NLM
162 162 * can know what vnodes are potentially locked;
163 163 *
164 164 * Vholds are used on server side only. For server side it's really
165 165 * important to keep vnodes held while they potentially have
166 166 * any locks/shares. In contrast, it's not important for clinet
167 167 * side at all. When particular vnode comes to the NLM client side
168 168 * code, it's already held (VN_HOLD) by the process calling
169 169 * lock/share function (it's referenced because client calls open()
170 170 * before making locks or shares).
171 171 *
172 172 * Each NLM host object has a collection of vholds associated
173 173 * with vnodes host touched earlier by adding locks or shares.
174 174 * Having this collection allows us to decide if host is still
175 175 * in use. When it has any vhold objects it's considered to be
176 176 * in use. Otherwise we're free to destroy it.
177 177 *
178 178 * Vholds are destroyed by the NLM garbage collecter thread that
179 179 * periodically checks whether they have any locks or shares.
180 180 * Checking occures when parent host is untouched by client
181 181 * or server for some period of time.
182 182 *
183 183 * struct nlm_vhold:
184 184 * nv_vp: a pointer to vnode that is hold by given nlm_vhold
185 185 * nv_refcnt: reference counter (non zero when vhold is inuse)
186 186 * nv_slreqs: sleeping lock requests that were made on the nv_vp
187 187 * nv_link: list node to store vholds in host's nh_vnodes_list
188 188 */
189 189 struct nlm_vhold {
190 190 vnode_t *nv_vp; /* (c) */
191 191 int nv_refcnt; /* (l) */
192 192 struct nlm_slreq_list nv_slreqs; /* (l) */
193 193 TAILQ_ENTRY(nlm_vhold) nv_link; /* (l) */
194 194 };
195 195 TAILQ_HEAD(nlm_vhold_list, nlm_vhold);
196 196
197 197 /*
198 198 * Client side sleeping lock state.
199 199 * - NLM_SL_BLOCKED: some thread is blocked on this lock
200 200 * - NLM_SL_GRANTED: server granted us the lock
201 201 * - NLM_SL_CANCELLED: the lock is cancelled (i.e. invalid/inactive)
202 202 */
203 203 typedef enum nlm_slock_state {
204 204 NLM_SL_UNKNOWN = 0,
205 205 NLM_SL_BLOCKED,
206 206 NLM_SL_GRANTED,
207 207 NLM_SL_CANCELLED
208 208 } nlm_slock_state_t;
209 209
210 210 /*
211 211 * A client side sleeping lock request (set by F_SETLKW)
212 212 * stored in nlm_slocks collection of nlm_globals.
213 213 *
214 214 * struct nlm_slock
215 215 * nsl_state: Sleeping lock state.
216 216 * (see nlm_slock_state for more information)
217 217 * nsl_cond: Condvar that is used when sleeping lock
218 218 * needs to wait for a GRANT callback
219 219 * or cancellation event.
220 220 * nsl_lock: nlm4_lock structure that is sent to the server
221 221 * nsl_fh: Filehandle that corresponds to nw_vp
222 222 * nsl_host: A host owning this sleeping lock
223 223 * nsl_vp: A vnode sleeping lock is waiting on.
224 224 * nsl_link: A list node for nlm_globals->nlm_slocks list.
225 225 */
226 226 struct nlm_slock {
227 227 nlm_slock_state_t nsl_state; /* (z) */
228 228 kcondvar_t nsl_cond; /* (z) */
229 229 nlm4_lock nsl_lock; /* (c) */
230 230 struct netobj nsl_fh; /* (c) */
231 231 struct nlm_host *nsl_host; /* (c) */
232 232 struct vnode *nsl_vp; /* (c) */
233 233 TAILQ_ENTRY(nlm_slock) nsl_link; /* (z) */
234 234 };
235 235 TAILQ_HEAD(nlm_slock_list, nlm_slock);
236 236
237 237 /*
238 238 * Share reservation description. NLM tracks all active
239 239 * share reservations made by the client side, so that
240 240 * they can be easily recovered if remote NLM server
241 241 * reboots. Share reservations tracking is also useful
242 242 * when NLM needs to determine whether host owns any
243 243 * resources on the system and can't be destroyed.
244 244 *
245 245 * nlm_shres:
246 246 * ns_shr: share reservation description
247 247 * ns_vp: a pointer to vnode where share reservation is located
248 248 * ns_next: next nlm_shres instance (or NULL if next item isn't
249 249 * present).
250 250 */
251 251 struct nlm_shres {
252 252 struct shrlock *ns_shr;
253 253 vnode_t *ns_vp;
254 254 struct nlm_shres *ns_next;
255 255 };
256 256
257 257 /*
258 258 * NLM RPC handle object.
259 259 *
260 260 * In kRPC subsystem it's unsafe to use one RPC handle by
261 261 * several threads simultaneously. It was designed so that
262 262 * each thread has to create an RPC handle that it'll use.
263 263 * RPC handle creation can be quite expensive operation, especially
264 264 * with session oriented protocols (such as TCP) that need to
265 265 * establish session at first. NLM RPC handle object is a sort of
266 266 * wrapper on kRPC handle object that can be cached and used in
267 267 * future. We store all created RPC handles for given host in a
268 268 * host's RPC handles cache, so that to make new requests threads
269 269 * can simply take ready objects from the cache. That improves
270 270 * NLM performance.
271 271 *
272 272 * nlm_rpc_t:
273 273 * nr_handle: a kRPC handle itself.
274 274 * nr_vers: a version of NLM protocol kRPC handle was
275 275 * created for.
276 276 * nr_link: a list node to store NLM RPC handles in the host
277 277 * RPC handles cache.
278 278 */
279 279 typedef struct nlm_rpc {
280 280 CLIENT *nr_handle; /* (l) */
281 281 rpcvers_t nr_vers; /* (c) */
282 282 TAILQ_ENTRY(nlm_rpc) nr_link; /* (l) */
283 283 } nlm_rpc_t;
284 284 TAILQ_HEAD(nlm_rpch_list, nlm_rpc);
285 285
286 286 /*
287 287 * Describes the state of NLM host's RPC binding.
288 288 * RPC binding can be in one of three states:
289 289 * 1) NRPCB_NEED_UPDATE:
290 290 * Binding is either not initialized or stale.
291 291 * 2) NRPCB_UPDATE_INPROGRESS:
292 292 * When some thread updates host's RPC binding,
293 293 * it sets binding's state to NRPCB_UPDATE_INPROGRESS
294 294 * which denotes that other threads must wait until
295 295 * update process is finished.
296 296 * 3) NRPCB_UPDATED:
297 297 * Denotes that host's RPC binding is both initialized
298 298 * and fresh.
299 299 */
300 300 enum nlm_rpcb_state {
301 301 NRPCB_NEED_UPDATE = 0,
302 302 NRPCB_UPDATE_INPROGRESS,
303 303 NRPCB_UPDATED
304 304 };
305 305
306 306 /*
307 307 * NLM host flags
308 308 */
309 309 #define NLM_NH_MONITORED 0x01
310 310 #define NLM_NH_RECLAIM 0x02
311 311 #define NLM_NH_INIDLE 0x04
312 312 #define NLM_NH_SUSPEND 0x08
313 313
314 314 /*
315 315 * NLM host object is the most major structure in NLM.
316 316 * It identifies remote client or remote server or both.
317 317 * NLM host object keep a track of all vnodes client/server
318 318 * locked and all sleeping locks it has. All lock/unlock
319 319 * operations are done using host object.
320 320 *
321 321 * nlm_host:
322 322 * nh_lock: a mutex protecting host object fields
323 323 * nh_refs: reference counter. Identifies how many threads
324 324 * uses this host object.
325 325 * nh_link: a list node for keeping host in zone-global list.
326 326 * nh_by_addr: an AVL tree node for keeping host in zone-global tree.
327 327 * Host can be looked up in the tree by <netid, address>
328 328 * pair.
329 329 * nh_name: host name.
330 330 * nh_netid: netid string identifying type of transport host uses.
331 331 * nh_knc: host's knetconfig (used by kRPC subsystem).
332 332 * nh_addr: host's address (either IPv4 or IPv6).
333 333 * nh_sysid: unique sysid associated with this host.
334 334 * nh_state: last seen host's state reported by NSM.
335 335 * nh_flags: ORed host flags.
336 336 * nh_idle_timeout: host idle timeout. When expired host is freed.
337 337 * nh_recl_cv: condition variable used for reporting that reclamation
338 338 * process is finished.
339 339 * nh_rpcb_cv: condition variable that is used to make sure
340 340 * that only one thread renews host's RPC binding.
341 341 * nh_rpcb_ustat: error code returned by RPC binding update operation.
342 342 * nh_rpcb_state: host's RPC binding state (see enum nlm_rpcb_state
343 343 * for more details).
344 344 * nh_rpchc: host's RPC handles cache.
345 345 * nh_vholds_by_vp: a hash table of all vholds host owns. (used for lookup)
346 346 * nh_vholds_list: a linked list of all vholds host owns. (used for iteration)
347 347 * nh_shrlist: a list of all active share resevations on the client side.
348 348 * nh_reclaimer: a pointer to reclamation thread (kthread_t)
349 349 * NULL if reclamation thread doesn't exist
350 350 */
351 351 struct nlm_host {
352 352 kmutex_t nh_lock; /* (c) */
353 353 volatile uint_t nh_refs; /* (z) */
354 354 TAILQ_ENTRY(nlm_host) nh_link; /* (z) */
355 355 avl_node_t nh_by_addr; /* (z) */
356 356 char *nh_name; /* (c) */
357 357 char *nh_netid; /* (c) */
358 358 struct knetconfig nh_knc; /* (c) */
359 359 struct netbuf nh_addr; /* (c) */
360 360 sysid_t nh_sysid; /* (c) */
361 361 int32_t nh_state; /* (z) */
362 362 clock_t nh_idle_timeout; /* (z) */
363 363 uint8_t nh_flags; /* (z) */
364 364 kcondvar_t nh_recl_cv; /* (z) */
365 365 kcondvar_t nh_rpcb_cv; /* (l) */
366 366 enum clnt_stat nh_rpcb_ustat; /* (l) */
367 367 enum nlm_rpcb_state nh_rpcb_state; /* (l) */
368 368 struct nlm_rpch_list nh_rpchc; /* (l) */
369 369 mod_hash_t *nh_vholds_by_vp; /* (l) */
370 370 struct nlm_vhold_list nh_vholds_list; /* (l) */
371 371 struct nlm_shres *nh_shrlist; /* (l) */
372 372 kthread_t *nh_reclaimer; /* (l) */
373 373 };
374 374 TAILQ_HEAD(nlm_host_list, nlm_host);
375 375
376 376 /*
377 377 * nlm_nsm structure describes RPC client handle that can be
378 378 * used to communicate with local NSM via kRPC.
379 379 *
380 380 * We need to wrap handle with nlm_nsm structure because kRPC
381 381 * can not share one handle between several threads. It's assumed
382 382 * that NLM uses only one NSM handle per zone, thus all RPC operations
383 383 * on NSM's handle are serialized using nlm_nsm->sem semaphore.
384 384 *
385 385 * nlm_nsm also contains refcnt field used for reference counting.
386 386 * It's used because there exist a possibility of simultaneous
387 387 * execution of NLM shutdown operation and host monitor/unmonitor
388 388 * operations.
389 389 *
390 390 * struct nlm_nsm:
391 391 * ns_sem: a semaphore for serialization network operations to statd
392 392 * ns_knc: a kneconfig describing transport that is used for communication
393 393 * ns_addr: an address of local statd we're talking to
394 394 * ns_handle: an RPC handle used for talking to local statd using the status
395 395 * monitor protocol (SM_PROG)
396 396 * ns_addr_handle: an RPC handle used for talking to local statd using the
397 397 * address registration protocol (NSM_ADDR_PROGRAM)
398 398 */
399 399 struct nlm_nsm {
400 400 ksema_t ns_sem;
401 401 struct knetconfig ns_knc; /* (c) */
402 402 struct netbuf ns_addr; /* (c) */
403 403 CLIENT *ns_handle; /* (c) */
404 404 CLIENT *ns_addr_handle; /* (c) */
405 405 };
406 406
407 407 /*
408 408 * Could use flock.h flk_nlm_status_t instead, but
409 409 * prefer our own enum with initial zero...
410 410 */
411 411 typedef enum {
412 412 NLM_ST_DOWN = 0,
413 413 NLM_ST_STOPPING,
414 414 NLM_ST_UP,
415 415 NLM_ST_STARTING
416 416 } nlm_run_status_t;
417 417
418 418 /*
419 419 * nlm_globals structure allows NLM be zone aware. The structure
420 420 * collects all "global variables" NLM has for each zone.
421 421 *
422 422 * struct nlm_globals:
423 423 * lock: mutex protecting all operations inside given zone
424 424 * grace_threshold: grace period expiration time (in ticks)
425 425 * lockd_pid: PID of lockd user space daemon
426 426 * run_status: run status of klmmod inside given zone
427 427 * nsm_state: state obtained from local statd during klmmod startup
428 428 * nlm_gc_thread: garbage collector thread
429 429 * nlm_gc_sched_cv: condvar that can be signalled to wakeup GC
430 430 * nlm_gc_finish_cv: condvar that is signalled just before GC thread exits
431 431 * nlm_nsm: an object describing RPC handle used for talking to local statd
432 432 * nlm_hosts_tree: an AVL tree of all hosts in the given zone
433 433 * (used for hosts lookup by <netid, address> pair)
434 434 * nlm_hosts_hash: a hash table of all hosts in the given zone
435 435 * (used for hosts lookup by sysid)
436 436 * nlm_idle_hosts: a list of all hosts that are idle state (i.e. unused)
437 437 * nlm_slocks: a list of all client-side sleeping locks in the zone
438 438 * cn_idle_tmo: a value of idle timeout (in seconds) obtained from lockd
439 439 * grace_period: a value of grace period (in seconds) obtained from lockd
440 440 * retrans_tmo: a value of retransmission timeout (in seconds) obtained
441 441 * from lockd.
442 442 * clean_lock: mutex used to serialize clear_locks calls.
443 443 * nlm_link: a list node used for keeping all nlm_globals objects
444 444 * in one global linked list.
445 445 */
446 446 struct nlm_globals {
447 447 kmutex_t lock;
448 448 clock_t grace_threshold; /* (z) */
449 449 pid_t lockd_pid; /* (z) */
450 450 nlm_run_status_t run_status; /* (z) */
451 451 int32_t nsm_state; /* (z) */
452 452 kthread_t *nlm_gc_thread; /* (z) */
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453 453 kcondvar_t nlm_gc_sched_cv; /* (z) */
454 454 kcondvar_t nlm_gc_finish_cv; /* (z) */
455 455 struct nlm_nsm nlm_nsm; /* (z) */
456 456 avl_tree_t nlm_hosts_tree; /* (z) */
457 457 mod_hash_t *nlm_hosts_hash; /* (z) */
458 458 struct nlm_host_list nlm_idle_hosts; /* (z) */
459 459 struct nlm_slock_list nlm_slocks; /* (z) */
460 460 int cn_idle_tmo; /* (z) */
461 461 int grace_period; /* (z) */
462 462 int retrans_tmo; /* (z) */
463 + boolean_t nlm_v4_only; /* (z) */
463 464 zoneid_t nlm_zoneid; /* (c) */
464 465 kmutex_t clean_lock; /* (c) */
465 466 TAILQ_ENTRY(nlm_globals) nlm_link; /* (g) */
466 467 };
467 468 TAILQ_HEAD(nlm_globals_list, nlm_globals);
468 469
469 470
470 471 /*
471 472 * This is what we pass as the "owner handle" for NLM_LOCK.
472 473 * This lets us find the blocked lock in NLM_GRANTED.
473 474 * It also exposes on the wire what we're using as the
474 475 * sysid for any server, which can be very helpful for
475 476 * problem diagnosis. (Observability is good).
476 477 */
477 478 struct nlm_owner_handle {
478 479 sysid_t oh_sysid; /* of remote host */
479 480 };
480 481
481 482 /*
482 483 * Number retries NLM RPC call is repeatead in case of failure.
483 484 * (used in case of conectionless transport).
484 485 */
485 486 #define NLM_RPC_RETRIES 5
486 487
487 488 /*
488 489 * Klmmod global variables
489 490 */
490 491 extern krwlock_t lm_lck;
491 492 extern zone_key_t nlm_zone_key;
492 493
493 494 /*
494 495 * NLM interface functions (called directly by
495 496 * either klmmod or klmpos)
496 497 */
497 498 extern int nlm_frlock(struct vnode *, int, struct flock64 *, int, u_offset_t,
498 499 struct cred *, struct netobj *, struct flk_callback *, int);
499 500 extern int nlm_shrlock(struct vnode *, int, struct shrlock *, int,
500 501 struct netobj *, int);
501 502 extern int nlm_safemap(const vnode_t *);
502 503 extern int nlm_safelock(vnode_t *, const struct flock64 *, cred_t *);
503 504 extern int nlm_has_sleep(const vnode_t *);
504 505 extern void nlm_register_lock_locally(struct vnode *, struct nlm_host *,
505 506 struct flock64 *, int, u_offset_t);
506 507 int nlm_vp_active(const vnode_t *vp);
507 508 void nlm_sysid_free(sysid_t);
508 509 int nlm_vp_active(const vnode_t *);
509 510 void nlm_unexport(struct exportinfo *);
510 511
511 512 /*
512 513 * NLM startup/shutdown
513 514 */
514 515 int nlm_svc_starting(struct nlm_globals *, struct file *,
515 516 const char *, struct knetconfig *);
516 517 void nlm_svc_stopping(struct nlm_globals *);
517 518 int nlm_svc_add_ep(struct file *, const char *, struct knetconfig *);
518 519
519 520 /*
520 521 * NLM suspend/resume
521 522 */
522 523 void nlm_cprsuspend(void);
523 524 void nlm_cprresume(void);
524 525
525 526 /*
526 527 * NLM internal functions for initialization.
527 528 */
528 529 void nlm_init(void);
529 530 void nlm_rpc_init(void);
530 531 void nlm_rpc_cache_destroy(struct nlm_host *);
531 532 void nlm_globals_register(struct nlm_globals *);
532 533 void nlm_globals_unregister(struct nlm_globals *);
533 534 sysid_t nlm_sysid_alloc(void);
534 535
535 536 /*
536 537 * Client reclamation/cancelation
537 538 */
538 539 void nlm_reclaim_client(struct nlm_globals *, struct nlm_host *);
539 540 void nlm_client_cancel_all(struct nlm_globals *, struct nlm_host *);
540 541
541 542 /* (nlm_rpc_clnt.c) */
542 543 enum clnt_stat nlm_null_rpc(CLIENT *, rpcvers_t);
543 544 enum clnt_stat nlm_test_rpc(nlm4_testargs *, nlm4_testres *,
544 545 CLIENT *, rpcvers_t);
545 546 enum clnt_stat nlm_lock_rpc(nlm4_lockargs *, nlm4_res *,
546 547 CLIENT *, rpcvers_t);
547 548 enum clnt_stat nlm_cancel_rpc(nlm4_cancargs *, nlm4_res *,
548 549 CLIENT *, rpcvers_t);
549 550 enum clnt_stat nlm_unlock_rpc(nlm4_unlockargs *, nlm4_res *,
550 551 CLIENT *, rpcvers_t);
551 552 enum clnt_stat nlm_share_rpc(nlm4_shareargs *, nlm4_shareres *,
552 553 CLIENT *, rpcvers_t);
553 554 enum clnt_stat nlm_unshare_rpc(nlm4_shareargs *, nlm4_shareres *,
554 555 CLIENT *, rpcvers_t);
555 556
556 557
557 558 /*
558 559 * RPC service functions.
559 560 * nlm_dispatch.c
560 561 */
561 562 void nlm_prog_3(struct svc_req *rqstp, SVCXPRT *transp);
562 563 void nlm_prog_4(struct svc_req *rqstp, SVCXPRT *transp);
563 564
564 565 /*
565 566 * Functions for working with knetconfigs (nlm_netconfig.c)
566 567 */
567 568 const char *nlm_knc_to_netid(struct knetconfig *);
568 569 int nlm_knc_from_netid(const char *, struct knetconfig *);
569 570
570 571 /*
571 572 * NLM host functions (nlm_impl.c)
572 573 */
573 574 struct nlm_host *nlm_host_findcreate(struct nlm_globals *, char *,
574 575 const char *, struct netbuf *);
575 576 struct nlm_host *nlm_host_find(struct nlm_globals *,
576 577 const char *, struct netbuf *);
577 578 struct nlm_host *nlm_host_find_by_sysid(struct nlm_globals *, sysid_t);
578 579 void nlm_host_release(struct nlm_globals *, struct nlm_host *);
579 580
580 581 void nlm_host_monitor(struct nlm_globals *, struct nlm_host *, int);
581 582 void nlm_host_unmonitor(struct nlm_globals *, struct nlm_host *);
582 583
583 584 void nlm_host_notify_server(struct nlm_host *, int32_t);
584 585 void nlm_host_notify_client(struct nlm_host *, int32_t);
585 586
586 587 int nlm_host_get_state(struct nlm_host *);
587 588
588 589 struct nlm_vhold *nlm_vhold_get(struct nlm_host *, vnode_t *);
589 590 void nlm_vhold_release(struct nlm_host *, struct nlm_vhold *);
590 591 struct nlm_vhold *nlm_vhold_find_locked(struct nlm_host *, const vnode_t *);
591 592
592 593 struct nlm_slock *nlm_slock_register(struct nlm_globals *,
593 594 struct nlm_host *, struct nlm4_lock *, struct vnode *);
594 595 void nlm_slock_unregister(struct nlm_globals *, struct nlm_slock *);
595 596 int nlm_slock_wait(struct nlm_globals *, struct nlm_slock *, uint_t);
596 597 int nlm_slock_grant(struct nlm_globals *,
597 598 struct nlm_host *, struct nlm4_lock *);
598 599 void nlm_host_cancel_slocks(struct nlm_globals *, struct nlm_host *);
599 600
600 601 int nlm_slreq_register(struct nlm_host *,
601 602 struct nlm_vhold *, struct flock64 *);
602 603 int nlm_slreq_unregister(struct nlm_host *,
603 604 struct nlm_vhold *, struct flock64 *);
604 605
605 606 void nlm_shres_track(struct nlm_host *, vnode_t *, struct shrlock *);
606 607 void nlm_shres_untrack(struct nlm_host *, vnode_t *, struct shrlock *);
607 608 struct nlm_shres *nlm_get_active_shres(struct nlm_host *);
608 609 void nlm_free_shrlist(struct nlm_shres *);
609 610
610 611 int nlm_host_wait_grace(struct nlm_host *);
611 612 int nlm_host_cmp(const void *, const void *);
612 613 void nlm_copy_netobj(struct netobj *, struct netobj *);
613 614
614 615 int nlm_host_get_rpc(struct nlm_host *, int, nlm_rpc_t **);
615 616 void nlm_host_rele_rpc(struct nlm_host *, nlm_rpc_t *);
616 617
617 618 /*
618 619 * NLM server functions (nlm_service.c)
619 620 */
620 621 int nlm_vp_active(const vnode_t *vp);
621 622 void nlm_do_notify1(nlm_sm_status *, void *, struct svc_req *);
622 623 void nlm_do_notify2(nlm_sm_status *, void *, struct svc_req *);
623 624 void nlm_do_test(nlm4_testargs *, nlm4_testres *,
624 625 struct svc_req *, nlm_testres_cb);
625 626 void nlm_do_lock(nlm4_lockargs *, nlm4_res *, struct svc_req *,
626 627 nlm_reply_cb, nlm_res_cb, nlm_testargs_cb);
627 628 void nlm_do_cancel(nlm4_cancargs *, nlm4_res *,
628 629 struct svc_req *, nlm_res_cb);
629 630 void nlm_do_unlock(nlm4_unlockargs *, nlm4_res *,
630 631 struct svc_req *, nlm_res_cb);
631 632 void nlm_do_granted(nlm4_testargs *, nlm4_res *,
632 633 struct svc_req *, nlm_res_cb);
633 634 void nlm_do_share(nlm4_shareargs *, nlm4_shareres *, struct svc_req *);
634 635 void nlm_do_unshare(nlm4_shareargs *, nlm4_shareres *, struct svc_req *);
635 636 void nlm_do_free_all(nlm4_notify *, void *, struct svc_req *);
636 637
637 638 /*
638 639 * NLM RPC functions
639 640 */
640 641 enum clnt_stat nlm_clnt_call(CLIENT *, rpcproc_t, xdrproc_t,
641 642 caddr_t, xdrproc_t, caddr_t, struct timeval);
642 643 bool_t nlm_caller_is_local(SVCXPRT *);
643 644
644 645 #endif /* _NLM_NLM_H_ */
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