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4045 zfs write throttle & i/o scheduler performance work
Reviewed by: George Wilson <george.wilson@delphix.com>
Reviewed by: Adam Leventhal <ahl@delphix.com>
Reviewed by: Christopher Siden <christopher.siden@delphix.com>
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--- old/usr/src/lib/libzpool/common/sys/zfs_context.h
+++ new/usr/src/lib/libzpool/common/sys/zfs_context.h
1 1 /*
2 2 * CDDL HEADER START
3 3 *
4 4 * The contents of this file are subject to the terms of the
5 5 * Common Development and Distribution License (the "License").
6 6 * You may not use this file except in compliance with the License.
7 7 *
8 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 9 * or http://www.opensolaris.org/os/licensing.
10 10 * See the License for the specific language governing permissions
11 11 * and limitations under the License.
12 12 *
13 13 * When distributing Covered Code, include this CDDL HEADER in each
14 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 15 * If applicable, add the following below this CDDL HEADER, with the
16 16 * fields enclosed by brackets "[]" replaced with your own identifying
17 17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 18 *
19 19 * CDDL HEADER END
20 20 */
21 21 /*
22 22 * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
23 23 * Copyright 2011 Nexenta Systems, Inc. All rights reserved.
24 24 * Copyright (c) 2013 by Delphix. All rights reserved.
25 25 * Copyright (c) 2012, Joyent, Inc. All rights reserved.
26 26 */
27 27
28 28 #ifndef _SYS_ZFS_CONTEXT_H
29 29 #define _SYS_ZFS_CONTEXT_H
30 30
31 31 #ifdef __cplusplus
32 32 extern "C" {
33 33 #endif
34 34
35 35 #define _SYS_MUTEX_H
36 36 #define _SYS_RWLOCK_H
37 37 #define _SYS_CONDVAR_H
38 38 #define _SYS_SYSTM_H
39 39 #define _SYS_T_LOCK_H
40 40 #define _SYS_VNODE_H
41 41 #define _SYS_VFS_H
42 42 #define _SYS_SUNDDI_H
43 43 #define _SYS_CALLB_H
44 44
45 45 #include <stdio.h>
46 46 #include <stdlib.h>
47 47 #include <stddef.h>
48 48 #include <stdarg.h>
49 49 #include <fcntl.h>
50 50 #include <unistd.h>
51 51 #include <errno.h>
52 52 #include <string.h>
53 53 #include <strings.h>
54 54 #include <synch.h>
55 55 #include <thread.h>
56 56 #include <assert.h>
57 57 #include <alloca.h>
58 58 #include <umem.h>
59 59 #include <limits.h>
60 60 #include <atomic.h>
61 61 #include <dirent.h>
62 62 #include <time.h>
63 63 #include <procfs.h>
64 64 #include <pthread.h>
65 65 #include <sys/debug.h>
66 66 #include <libsysevent.h>
67 67 #include <sys/note.h>
68 68 #include <sys/types.h>
69 69 #include <sys/cred.h>
70 70 #include <sys/sysmacros.h>
71 71 #include <sys/bitmap.h>
72 72 #include <sys/resource.h>
73 73 #include <sys/byteorder.h>
74 74 #include <sys/list.h>
75 75 #include <sys/uio.h>
76 76 #include <sys/zfs_debug.h>
77 77 #include <sys/sdt.h>
78 78 #include <sys/kstat.h>
79 79 #include <sys/u8_textprep.h>
80 80 #include <sys/sysevent/eventdefs.h>
81 81 #include <sys/sysevent/dev.h>
82 82 #include <sys/sunddi.h>
83 83 #include <sys/debug.h>
84 84 #include "zfs.h"
85 85
86 86 /*
87 87 * Debugging
88 88 */
89 89
90 90 /*
91 91 * Note that we are not using the debugging levels.
92 92 */
93 93
94 94 #define CE_CONT 0 /* continuation */
95 95 #define CE_NOTE 1 /* notice */
96 96 #define CE_WARN 2 /* warning */
97 97 #define CE_PANIC 3 /* panic */
98 98 #define CE_IGNORE 4 /* print nothing */
99 99
100 100 /*
101 101 * ZFS debugging
102 102 */
103 103
104 104 #ifdef ZFS_DEBUG
105 105 extern void dprintf_setup(int *argc, char **argv);
106 106 #endif /* ZFS_DEBUG */
107 107
108 108 extern void cmn_err(int, const char *, ...);
109 109 extern void vcmn_err(int, const char *, __va_list);
110 110 extern void panic(const char *, ...);
111 111 extern void vpanic(const char *, __va_list);
112 112
113 113 #define fm_panic panic
114 114
115 115 extern int aok;
116 116
117 117 /*
118 118 * DTrace SDT probes have different signatures in userland than they do in
119 119 * kernel. If they're being used in kernel code, re-define them out of
120 120 * existence for their counterparts in libzpool.
121 121 */
122 122
123 123 #ifdef DTRACE_PROBE
124 124 #undef DTRACE_PROBE
125 125 #endif /* DTRACE_PROBE */
126 126 #define DTRACE_PROBE(a) \
127 127 ZFS_PROBE0(#a)
128 128
129 129 #ifdef DTRACE_PROBE1
130 130 #undef DTRACE_PROBE1
131 131 #endif /* DTRACE_PROBE1 */
132 132 #define DTRACE_PROBE1(a, b, c) \
133 133 ZFS_PROBE1(#a, (unsigned long)c)
134 134
135 135 #ifdef DTRACE_PROBE2
136 136 #undef DTRACE_PROBE2
137 137 #endif /* DTRACE_PROBE2 */
138 138 #define DTRACE_PROBE2(a, b, c, d, e) \
139 139 ZFS_PROBE2(#a, (unsigned long)c, (unsigned long)e)
140 140
141 141 #ifdef DTRACE_PROBE3
142 142 #undef DTRACE_PROBE3
143 143 #endif /* DTRACE_PROBE3 */
144 144 #define DTRACE_PROBE3(a, b, c, d, e, f, g) \
145 145 ZFS_PROBE3(#a, (unsigned long)c, (unsigned long)e, (unsigned long)g)
146 146
147 147 #ifdef DTRACE_PROBE4
148 148 #undef DTRACE_PROBE4
149 149 #endif /* DTRACE_PROBE4 */
150 150 #define DTRACE_PROBE4(a, b, c, d, e, f, g, h, i) \
151 151 ZFS_PROBE4(#a, (unsigned long)c, (unsigned long)e, (unsigned long)g, \
152 152 (unsigned long)i)
153 153
154 154 /*
155 155 * We use the comma operator so that this macro can be used without much
156 156 * additional code. For example, "return (EINVAL);" becomes
157 157 * "return (SET_ERROR(EINVAL));". Note that the argument will be evaluated
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157 lines elided |
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158 158 * twice, so it should not have side effects (e.g. something like:
159 159 * "return (SET_ERROR(log_error(EINVAL, info)));" would log the error twice).
160 160 */
161 161 #define SET_ERROR(err) (ZFS_SET_ERROR(err), err)
162 162
163 163 /*
164 164 * Threads
165 165 */
166 166 #define curthread ((void *)(uintptr_t)thr_self())
167 167
168 +#define kpreempt(x) yield()
169 +
168 170 typedef struct kthread kthread_t;
169 171
170 172 #define thread_create(stk, stksize, func, arg, len, pp, state, pri) \
171 173 zk_thread_create(func, arg)
172 174 #define thread_exit() thr_exit(NULL)
173 175 #define thread_join(t) panic("libzpool cannot join threads")
174 176
175 177 #define newproc(f, a, cid, pri, ctp, pid) (ENOSYS)
176 178
177 179 /* in libzpool, p0 exists only to have its address taken */
178 180 struct proc {
179 181 uintptr_t this_is_never_used_dont_dereference_it;
180 182 };
181 183
182 184 extern struct proc p0;
183 185 #define curproc (&p0)
184 186
185 187 #define PS_NONE -1
186 188
187 189 extern kthread_t *zk_thread_create(void (*func)(), void *arg);
188 190
189 191 #define issig(why) (FALSE)
190 192 #define ISSIG(thr, why) (FALSE)
191 193
192 194 /*
193 195 * Mutexes
194 196 */
195 197 typedef struct kmutex {
196 198 void *m_owner;
197 199 boolean_t initialized;
198 200 mutex_t m_lock;
199 201 } kmutex_t;
200 202
201 203 #define MUTEX_DEFAULT USYNC_THREAD
202 204 #undef MUTEX_HELD
203 205 #undef MUTEX_NOT_HELD
204 206 #define MUTEX_HELD(m) _mutex_held(&(m)->m_lock)
205 207 #define MUTEX_NOT_HELD(m) (!MUTEX_HELD(m))
206 208
207 209 /*
208 210 * Argh -- we have to get cheesy here because the kernel and userland
209 211 * have different signatures for the same routine.
210 212 */
211 213 extern int _mutex_init(mutex_t *mp, int type, void *arg);
212 214 extern int _mutex_destroy(mutex_t *mp);
213 215
214 216 #define mutex_init(mp, b, c, d) zmutex_init((kmutex_t *)(mp))
215 217 #define mutex_destroy(mp) zmutex_destroy((kmutex_t *)(mp))
216 218
217 219 extern void zmutex_init(kmutex_t *mp);
218 220 extern void zmutex_destroy(kmutex_t *mp);
219 221 extern void mutex_enter(kmutex_t *mp);
220 222 extern void mutex_exit(kmutex_t *mp);
221 223 extern int mutex_tryenter(kmutex_t *mp);
222 224 extern void *mutex_owner(kmutex_t *mp);
223 225
224 226 /*
225 227 * RW locks
226 228 */
227 229 typedef struct krwlock {
228 230 void *rw_owner;
229 231 boolean_t initialized;
230 232 rwlock_t rw_lock;
231 233 } krwlock_t;
232 234
233 235 typedef int krw_t;
234 236
235 237 #define RW_READER 0
236 238 #define RW_WRITER 1
237 239 #define RW_DEFAULT USYNC_THREAD
238 240
239 241 #undef RW_READ_HELD
240 242 #define RW_READ_HELD(x) _rw_read_held(&(x)->rw_lock)
241 243
242 244 #undef RW_WRITE_HELD
243 245 #define RW_WRITE_HELD(x) _rw_write_held(&(x)->rw_lock)
244 246
245 247 #undef RW_LOCK_HELD
246 248 #define RW_LOCK_HELD(x) (RW_READ_HELD(x) || RW_WRITE_HELD(x))
247 249
248 250 extern void rw_init(krwlock_t *rwlp, char *name, int type, void *arg);
249 251 extern void rw_destroy(krwlock_t *rwlp);
250 252 extern void rw_enter(krwlock_t *rwlp, krw_t rw);
251 253 extern int rw_tryenter(krwlock_t *rwlp, krw_t rw);
252 254 extern int rw_tryupgrade(krwlock_t *rwlp);
253 255 extern void rw_exit(krwlock_t *rwlp);
254 256 #define rw_downgrade(rwlp) do { } while (0)
255 257
256 258 extern uid_t crgetuid(cred_t *cr);
257 259 extern uid_t crgetruid(cred_t *cr);
258 260 extern gid_t crgetgid(cred_t *cr);
259 261 extern int crgetngroups(cred_t *cr);
260 262 extern gid_t *crgetgroups(cred_t *cr);
261 263
262 264 /*
263 265 * Condition variables
264 266 */
265 267 typedef cond_t kcondvar_t;
266 268
267 269 #define CV_DEFAULT USYNC_THREAD
268 270
269 271 extern void cv_init(kcondvar_t *cv, char *name, int type, void *arg);
270 272 extern void cv_destroy(kcondvar_t *cv);
271 273 extern void cv_wait(kcondvar_t *cv, kmutex_t *mp);
272 274 extern clock_t cv_timedwait(kcondvar_t *cv, kmutex_t *mp, clock_t abstime);
273 275 extern clock_t cv_timedwait_hires(kcondvar_t *cvp, kmutex_t *mp, hrtime_t tim,
274 276 hrtime_t res, int flag);
275 277 extern void cv_signal(kcondvar_t *cv);
276 278 extern void cv_broadcast(kcondvar_t *cv);
277 279
278 280 /*
279 281 * Thread-specific data
280 282 */
281 283 #define tsd_get(k) pthread_getspecific(k)
282 284 #define tsd_set(k, v) pthread_setspecific(k, v)
283 285 #define tsd_create(kp, d) pthread_key_create(kp, d)
284 286 #define tsd_destroy(kp) /* nothing */
285 287
286 288 /*
287 289 * kstat creation, installation and deletion
288 290 */
289 291 extern kstat_t *kstat_create(const char *, int,
290 292 const char *, const char *, uchar_t, ulong_t, uchar_t);
291 293 extern void kstat_install(kstat_t *);
292 294 extern void kstat_delete(kstat_t *);
293 295 extern void kstat_waitq_enter(kstat_io_t *);
294 296 extern void kstat_waitq_exit(kstat_io_t *);
295 297 extern void kstat_runq_enter(kstat_io_t *);
296 298 extern void kstat_runq_exit(kstat_io_t *);
297 299 extern void kstat_waitq_to_runq(kstat_io_t *);
298 300 extern void kstat_runq_back_to_waitq(kstat_io_t *);
299 301
300 302 /*
301 303 * Kernel memory
302 304 */
303 305 #define KM_SLEEP UMEM_NOFAIL
304 306 #define KM_PUSHPAGE KM_SLEEP
305 307 #define KM_NOSLEEP UMEM_DEFAULT
306 308 #define KMC_NODEBUG UMC_NODEBUG
307 309 #define KMC_NOTOUCH 0 /* not needed for userland caches */
308 310 #define kmem_alloc(_s, _f) umem_alloc(_s, _f)
309 311 #define kmem_zalloc(_s, _f) umem_zalloc(_s, _f)
310 312 #define kmem_free(_b, _s) umem_free(_b, _s)
311 313 #define kmem_cache_create(_a, _b, _c, _d, _e, _f, _g, _h, _i) \
312 314 umem_cache_create(_a, _b, _c, _d, _e, _f, _g, _h, _i)
313 315 #define kmem_cache_destroy(_c) umem_cache_destroy(_c)
314 316 #define kmem_cache_alloc(_c, _f) umem_cache_alloc(_c, _f)
315 317 #define kmem_cache_free(_c, _b) umem_cache_free(_c, _b)
316 318 #define kmem_debugging() 0
317 319 #define kmem_cache_reap_now(_c) /* nothing */
318 320 #define kmem_cache_set_move(_c, _cb) /* nothing */
319 321 #define vmem_qcache_reap(_v) /* nothing */
320 322 #define POINTER_INVALIDATE(_pp) /* nothing */
321 323 #define POINTER_IS_VALID(_p) 0
322 324
323 325 extern vmem_t *zio_arena;
324 326
325 327 typedef umem_cache_t kmem_cache_t;
326 328
327 329 typedef enum kmem_cbrc {
328 330 KMEM_CBRC_YES,
329 331 KMEM_CBRC_NO,
330 332 KMEM_CBRC_LATER,
331 333 KMEM_CBRC_DONT_NEED,
332 334 KMEM_CBRC_DONT_KNOW
333 335 } kmem_cbrc_t;
334 336
335 337 /*
336 338 * Task queues
337 339 */
338 340 typedef struct taskq taskq_t;
339 341 typedef uintptr_t taskqid_t;
340 342 typedef void (task_func_t)(void *);
341 343
342 344 typedef struct taskq_ent {
343 345 struct taskq_ent *tqent_next;
344 346 struct taskq_ent *tqent_prev;
345 347 task_func_t *tqent_func;
346 348 void *tqent_arg;
347 349 uintptr_t tqent_flags;
348 350 } taskq_ent_t;
349 351
350 352 #define TQENT_FLAG_PREALLOC 0x1 /* taskq_dispatch_ent used */
351 353
352 354 #define TASKQ_PREPOPULATE 0x0001
353 355 #define TASKQ_CPR_SAFE 0x0002 /* Use CPR safe protocol */
354 356 #define TASKQ_DYNAMIC 0x0004 /* Use dynamic thread scheduling */
355 357 #define TASKQ_THREADS_CPU_PCT 0x0008 /* Scale # threads by # cpus */
356 358 #define TASKQ_DC_BATCH 0x0010 /* Mark threads as batch */
357 359
358 360 #define TQ_SLEEP KM_SLEEP /* Can block for memory */
359 361 #define TQ_NOSLEEP KM_NOSLEEP /* cannot block for memory; may fail */
360 362 #define TQ_NOQUEUE 0x02 /* Do not enqueue if can't dispatch */
361 363 #define TQ_FRONT 0x08 /* Queue in front */
362 364
363 365
364 366 extern taskq_t *system_taskq;
365 367
366 368 extern taskq_t *taskq_create(const char *, int, pri_t, int, int, uint_t);
367 369 #define taskq_create_proc(a, b, c, d, e, p, f) \
368 370 (taskq_create(a, b, c, d, e, f))
369 371 #define taskq_create_sysdc(a, b, d, e, p, dc, f) \
370 372 (taskq_create(a, b, maxclsyspri, d, e, f))
371 373 extern taskqid_t taskq_dispatch(taskq_t *, task_func_t, void *, uint_t);
372 374 extern void taskq_dispatch_ent(taskq_t *, task_func_t, void *, uint_t,
373 375 taskq_ent_t *);
374 376 extern void taskq_destroy(taskq_t *);
375 377 extern void taskq_wait(taskq_t *);
376 378 extern int taskq_member(taskq_t *, void *);
377 379 extern void system_taskq_init(void);
378 380 extern void system_taskq_fini(void);
379 381
380 382 #define XVA_MAPSIZE 3
381 383 #define XVA_MAGIC 0x78766174
382 384
383 385 /*
384 386 * vnodes
385 387 */
386 388 typedef struct vnode {
387 389 uint64_t v_size;
388 390 int v_fd;
389 391 char *v_path;
390 392 } vnode_t;
391 393
392 394 #define AV_SCANSTAMP_SZ 32 /* length of anti-virus scanstamp */
393 395
394 396 typedef struct xoptattr {
395 397 timestruc_t xoa_createtime; /* Create time of file */
396 398 uint8_t xoa_archive;
397 399 uint8_t xoa_system;
398 400 uint8_t xoa_readonly;
399 401 uint8_t xoa_hidden;
400 402 uint8_t xoa_nounlink;
401 403 uint8_t xoa_immutable;
402 404 uint8_t xoa_appendonly;
403 405 uint8_t xoa_nodump;
404 406 uint8_t xoa_settable;
405 407 uint8_t xoa_opaque;
406 408 uint8_t xoa_av_quarantined;
407 409 uint8_t xoa_av_modified;
408 410 uint8_t xoa_av_scanstamp[AV_SCANSTAMP_SZ];
409 411 uint8_t xoa_reparse;
410 412 uint8_t xoa_offline;
411 413 uint8_t xoa_sparse;
412 414 } xoptattr_t;
413 415
414 416 typedef struct vattr {
415 417 uint_t va_mask; /* bit-mask of attributes */
416 418 u_offset_t va_size; /* file size in bytes */
417 419 } vattr_t;
418 420
419 421
420 422 typedef struct xvattr {
421 423 vattr_t xva_vattr; /* Embedded vattr structure */
422 424 uint32_t xva_magic; /* Magic Number */
423 425 uint32_t xva_mapsize; /* Size of attr bitmap (32-bit words) */
424 426 uint32_t *xva_rtnattrmapp; /* Ptr to xva_rtnattrmap[] */
425 427 uint32_t xva_reqattrmap[XVA_MAPSIZE]; /* Requested attrs */
426 428 uint32_t xva_rtnattrmap[XVA_MAPSIZE]; /* Returned attrs */
427 429 xoptattr_t xva_xoptattrs; /* Optional attributes */
428 430 } xvattr_t;
429 431
430 432 typedef struct vsecattr {
431 433 uint_t vsa_mask; /* See below */
432 434 int vsa_aclcnt; /* ACL entry count */
433 435 void *vsa_aclentp; /* pointer to ACL entries */
434 436 int vsa_dfaclcnt; /* default ACL entry count */
435 437 void *vsa_dfaclentp; /* pointer to default ACL entries */
436 438 size_t vsa_aclentsz; /* ACE size in bytes of vsa_aclentp */
437 439 } vsecattr_t;
438 440
439 441 #define AT_TYPE 0x00001
440 442 #define AT_MODE 0x00002
441 443 #define AT_UID 0x00004
442 444 #define AT_GID 0x00008
443 445 #define AT_FSID 0x00010
444 446 #define AT_NODEID 0x00020
445 447 #define AT_NLINK 0x00040
446 448 #define AT_SIZE 0x00080
447 449 #define AT_ATIME 0x00100
448 450 #define AT_MTIME 0x00200
449 451 #define AT_CTIME 0x00400
450 452 #define AT_RDEV 0x00800
451 453 #define AT_BLKSIZE 0x01000
452 454 #define AT_NBLOCKS 0x02000
453 455 #define AT_SEQ 0x08000
454 456 #define AT_XVATTR 0x10000
455 457
456 458 #define CRCREAT 0
457 459
458 460 extern int fop_getattr(vnode_t *vp, vattr_t *vap);
459 461
460 462 #define VOP_CLOSE(vp, f, c, o, cr, ct) 0
461 463 #define VOP_PUTPAGE(vp, of, sz, fl, cr, ct) 0
462 464 #define VOP_GETATTR(vp, vap, fl, cr, ct) fop_getattr((vp), (vap));
463 465
464 466 #define VOP_FSYNC(vp, f, cr, ct) fsync((vp)->v_fd)
465 467
466 468 #define VN_RELE(vp) vn_close(vp)
467 469
468 470 extern int vn_open(char *path, int x1, int oflags, int mode, vnode_t **vpp,
469 471 int x2, int x3);
470 472 extern int vn_openat(char *path, int x1, int oflags, int mode, vnode_t **vpp,
471 473 int x2, int x3, vnode_t *vp, int fd);
472 474 extern int vn_rdwr(int uio, vnode_t *vp, void *addr, ssize_t len,
473 475 offset_t offset, int x1, int x2, rlim64_t x3, void *x4, ssize_t *residp);
474 476 extern void vn_close(vnode_t *vp);
475 477
476 478 #define vn_remove(path, x1, x2) remove(path)
477 479 #define vn_rename(from, to, seg) rename((from), (to))
478 480 #define vn_is_readonly(vp) B_FALSE
479 481
480 482 extern vnode_t *rootdir;
481 483
482 484 #include <sys/file.h> /* for FREAD, FWRITE, etc */
483 485
484 486 /*
485 487 * Random stuff
486 488 */
487 489 #define ddi_get_lbolt() (gethrtime() >> 23)
488 490 #define ddi_get_lbolt64() (gethrtime() >> 23)
489 491 #define hz 119 /* frequency when using gethrtime() >> 23 for lbolt */
490 492
491 493 extern void delay(clock_t ticks);
492 494
493 495 #define SEC_TO_TICK(sec) ((sec) * hz)
494 496 #define NSEC_TO_TICK(usec) ((usec) / (NANOSEC / hz))
495 497
496 498 #define gethrestime_sec() time(NULL)
497 499 #define gethrestime(t) \
498 500 do {\
499 501 (t)->tv_sec = gethrestime_sec();\
500 502 (t)->tv_nsec = 0;\
501 503 } while (0);
502 504
503 505 #define max_ncpus 64
504 506
505 507 #define minclsyspri 60
506 508 #define maxclsyspri 99
507 509
508 510 #define CPU_SEQID (thr_self() & (max_ncpus - 1))
509 511
510 512 #define kcred NULL
511 513 #define CRED() NULL
512 514
513 515 #define ptob(x) ((x) * PAGESIZE)
514 516
515 517 extern uint64_t physmem;
516 518
517 519 extern int highbit(ulong_t i);
518 520 extern int random_get_bytes(uint8_t *ptr, size_t len);
519 521 extern int random_get_pseudo_bytes(uint8_t *ptr, size_t len);
520 522
521 523 extern void kernel_init(int);
522 524 extern void kernel_fini(void);
523 525
524 526 struct spa;
525 527 extern void nicenum(uint64_t num, char *buf);
526 528 extern void show_pool_stats(struct spa *);
527 529
528 530 typedef struct callb_cpr {
529 531 kmutex_t *cc_lockp;
530 532 } callb_cpr_t;
531 533
532 534 #define CALLB_CPR_INIT(cp, lockp, func, name) { \
533 535 (cp)->cc_lockp = lockp; \
534 536 }
535 537
536 538 #define CALLB_CPR_SAFE_BEGIN(cp) { \
537 539 ASSERT(MUTEX_HELD((cp)->cc_lockp)); \
538 540 }
539 541
540 542 #define CALLB_CPR_SAFE_END(cp, lockp) { \
541 543 ASSERT(MUTEX_HELD((cp)->cc_lockp)); \
542 544 }
543 545
544 546 #define CALLB_CPR_EXIT(cp) { \
545 547 ASSERT(MUTEX_HELD((cp)->cc_lockp)); \
546 548 mutex_exit((cp)->cc_lockp); \
547 549 }
548 550
549 551 #define zone_dataset_visible(x, y) (1)
550 552 #define INGLOBALZONE(z) (1)
551 553
552 554 extern char *kmem_asprintf(const char *fmt, ...);
553 555 #define strfree(str) kmem_free((str), strlen(str) + 1)
554 556
555 557 /*
556 558 * Hostname information
557 559 */
558 560 extern char hw_serial[]; /* for userland-emulated hostid access */
559 561 extern int ddi_strtoul(const char *str, char **nptr, int base,
560 562 unsigned long *result);
561 563
562 564 extern int ddi_strtoull(const char *str, char **nptr, int base,
563 565 u_longlong_t *result);
564 566
565 567 /* ZFS Boot Related stuff. */
566 568
567 569 struct _buf {
568 570 intptr_t _fd;
569 571 };
570 572
571 573 struct bootstat {
572 574 uint64_t st_size;
573 575 };
574 576
575 577 typedef struct ace_object {
576 578 uid_t a_who;
577 579 uint32_t a_access_mask;
578 580 uint16_t a_flags;
579 581 uint16_t a_type;
580 582 uint8_t a_obj_type[16];
581 583 uint8_t a_inherit_obj_type[16];
582 584 } ace_object_t;
583 585
584 586
585 587 #define ACE_ACCESS_ALLOWED_OBJECT_ACE_TYPE 0x05
586 588 #define ACE_ACCESS_DENIED_OBJECT_ACE_TYPE 0x06
587 589 #define ACE_SYSTEM_AUDIT_OBJECT_ACE_TYPE 0x07
588 590 #define ACE_SYSTEM_ALARM_OBJECT_ACE_TYPE 0x08
589 591
590 592 extern struct _buf *kobj_open_file(char *name);
591 593 extern int kobj_read_file(struct _buf *file, char *buf, unsigned size,
592 594 unsigned off);
593 595 extern void kobj_close_file(struct _buf *file);
594 596 extern int kobj_get_filesize(struct _buf *file, uint64_t *size);
595 597 extern int zfs_secpolicy_snapshot_perms(const char *name, cred_t *cr);
596 598 extern int zfs_secpolicy_rename_perms(const char *from, const char *to,
597 599 cred_t *cr);
598 600 extern int zfs_secpolicy_destroy_perms(const char *name, cred_t *cr);
599 601 extern zoneid_t getzoneid(void);
600 602
601 603 /* SID stuff */
602 604 typedef struct ksiddomain {
603 605 uint_t kd_ref;
604 606 uint_t kd_len;
605 607 char *kd_name;
606 608 } ksiddomain_t;
607 609
608 610 ksiddomain_t *ksid_lookupdomain(const char *);
609 611 void ksiddomain_rele(ksiddomain_t *);
610 612
611 613 #define DDI_SLEEP KM_SLEEP
612 614 #define ddi_log_sysevent(_a, _b, _c, _d, _e, _f, _g) \
613 615 sysevent_post_event(_c, _d, _b, "libzpool", _e, _f)
614 616
615 617 /*
616 618 * Cyclic information
617 619 */
618 620 extern kmutex_t cpu_lock;
619 621
620 622 typedef uintptr_t cyclic_id_t;
621 623 typedef uint16_t cyc_level_t;
622 624 typedef void (*cyc_func_t)(void *);
623 625
624 626 #define CY_LOW_LEVEL 0
625 627 #define CY_INFINITY INT64_MAX
626 628 #define CYCLIC_NONE ((cyclic_id_t)0)
627 629
628 630 typedef struct cyc_time {
629 631 hrtime_t cyt_when;
630 632 hrtime_t cyt_interval;
631 633 } cyc_time_t;
632 634
633 635 typedef struct cyc_handler {
634 636 cyc_func_t cyh_func;
635 637 void *cyh_arg;
636 638 cyc_level_t cyh_level;
637 639 } cyc_handler_t;
638 640
639 641 extern cyclic_id_t cyclic_add(cyc_handler_t *, cyc_time_t *);
640 642 extern void cyclic_remove(cyclic_id_t);
641 643 extern int cyclic_reprogram(cyclic_id_t, hrtime_t);
642 644
643 645 /*
644 646 * Buf structure
645 647 */
646 648 #define B_BUSY 0x0001
647 649 #define B_DONE 0x0002
648 650 #define B_ERROR 0x0004
649 651 #define B_READ 0x0040 /* read when I/O occurs */
650 652 #define B_WRITE 0x0100 /* non-read pseudo-flag */
651 653
652 654 typedef struct buf {
653 655 int b_flags;
654 656 size_t b_bcount;
655 657 union {
656 658 caddr_t b_addr;
657 659 } b_un;
658 660
659 661 lldaddr_t _b_blkno;
660 662 #define b_lblkno _b_blkno._f
661 663 size_t b_resid;
662 664 size_t b_bufsize;
663 665 int (*b_iodone)(struct buf *);
664 666 int b_error;
665 667 void *b_private;
666 668 } buf_t;
667 669
668 670 extern void bioinit(buf_t *);
669 671 extern void biodone(buf_t *);
670 672 extern void bioerror(buf_t *, int);
671 673 extern int geterror(buf_t *);
672 674
673 675 #ifdef __cplusplus
674 676 }
675 677 #endif
676 678
677 679 #endif /* _SYS_ZFS_CONTEXT_H */
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