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77755a57
BB		 1/*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21/*
ed828c0c
GM		 22 * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
23 * Copyright 2011 Nexenta Systems, Inc. All rights reserved.
30af21b0 24 * Copyright (c) 2012, 2018 by Delphix. All rights reserved.
37abac6d 25 * Copyright (c) 2012, Joyent, Inc. All rights reserved.
a38718a6 26 */
77755a57
BB		 27
28#ifndef _SYS_ZFS_CONTEXT_H
29#define _SYS_ZFS_CONTEXT_H
30
e37e1d30 31#ifdef __KERNEL__
6283f55e
BB		 32
33#include <sys/note.h>
34#include <sys/types.h>
6283f55e
BB		 35#include <sys/atomic.h>
36#include <sys/sysmacros.h>
93ce2b4c
BB		 37#include <sys/vmsystm.h>
38#include <sys/condvar.h>
6283f55e
BB		 39#include <sys/cmn_err.h>
40#include <sys/kmem.h>
60e1eda9 41#include <sys/kmem_cache.h>
efcd79a8 42#include <sys/vmem.h>
6283f55e 43#include <sys/taskq.h>
6283f55e 44#include <sys/param.h>
6283f55e 45#include <sys/kobj.h>
6283f55e
BB		 46#include <sys/disp.h>
47#include <sys/debug.h>
48#include <sys/random.h>
93ce2b4c 49#include <sys/strings.h>
6283f55e 50#include <sys/byteorder.h>
6283f55e 51#include <sys/list.h>
590329b5 52#include <sys/uio_impl.h>
6283f55e 53#include <sys/time.h>
6283f55e 54#include <sys/zone.h>
2e528b49 55#include <sys/sdt.h>
0b04990a 56#include <sys/kstat.h>
6283f55e 57#include <sys/zfs_debug.h>
fb390aaf
HR		 58#include <sys/sysevent.h>
59#include <sys/sysevent/eventdefs.h>
e8b96c60 60#include <sys/zfs_delay.h>
6283f55e 61#include <sys/sunddi.h>
d96eb2b1 62#include <sys/ctype.h>
15a9e033 63#include <sys/disp.h>
0b39b9f9 64#include <sys/trace.h>
d1261452 65#include <sys/procfs_list.h>
8299a1f4 66#include <linux/dcache_compat.h>
f0e324f2 67#include <linux/utsname_compat.h>
6283f55e
BB		 68
69#else /* _KERNEL */
77755a57
BB		 70
71#define _SYS_MUTEX_H
72#define _SYS_RWLOCK_H
73#define _SYS_CONDVAR_H
77755a57
BB		 74#define _SYS_VNODE_H
75#define _SYS_VFS_H
76#define _SYS_SUNDDI_H
77#define _SYS_CALLB_H
78
79#include <stdio.h>
80#include <stdlib.h>
81#include <stddef.h>
82#include <stdarg.h>
83#include <fcntl.h>
84#include <unistd.h>
85#include <errno.h>
86#include <string.h>
87#include <strings.h>
1e33ac1e 88#include <pthread.h>
d99a0153 89#include <setjmp.h>
77755a57
BB		 90#include <assert.h>
91#include <alloca.h>
92#include <umem.h>
93#include <limits.h>
94#include <atomic.h>
95#include <dirent.h>
96#include <time.h>
d96eb2b1 97#include <ctype.h>
498877ba
MA		 98#include <signal.h>
99#include <sys/mman.h>
77755a57
BB		 100#include <sys/note.h>
101#include <sys/types.h>
102#include <sys/cred.h>
103#include <sys/sysmacros.h>
104#include <sys/bitmap.h>
105#include <sys/resource.h>
106#include <sys/byteorder.h>
107#include <sys/list.h>
108#include <sys/uio.h>
109#include <sys/zfs_debug.h>
110#include <sys/sdt.h>
111#include <sys/kstat.h>
112#include <sys/u8_textprep.h>
fb390aaf
HR		 113#include <sys/sysevent.h>
114#include <sys/sysevent/eventdefs.h>
428870ff 115#include <sys/sunddi.h>
c99c9001 116#include <sys/debug.h>
f0e324f2 117#include <sys/utsname.h>
77755a57 118
60948de1
BB		 119/*
120 * Stack
121 */
122
2e528b49 123#define noinline __attribute__((noinline))
ee36c709 124#define likely(x) __builtin_expect((x), 1)
30af21b0 125#define unlikely(x) __builtin_expect((x), 0)
60948de1 126
77755a57
BB		 127/*
128 * Debugging
129 */
130
131/*
132 * Note that we are not using the debugging levels.
133 */
134
135#define CE_CONT 0 /* continuation */
136#define CE_NOTE 1 /* notice */
137#define CE_WARN 2 /* warning */
138#define CE_PANIC 3 /* panic */
139#define CE_IGNORE 4 /* print nothing */
140
141/*
142 * ZFS debugging
143 */
144
77755a57 145extern void dprintf_setup(int *argc, char **argv);
0b39b9f9 146
77755a57 147extern void cmn_err(int, const char *, ...);
22a11a5b 148extern void vcmn_err(int, const char *, va_list);
d99a0153
CW		 149extern void panic(const char *, ...) __NORETURN;
150extern void vpanic(const char *, va_list) __NORETURN;
77755a57
BB		 151
152#define fm_panic panic
153
0b39b9f9
PS		 154extern int aok;
155
77755a57
BB		 156/*
157 * DTrace SDT probes have different signatures in userland than they do in
fcff0f35 158 * the kernel. If they're being used in kernel code, re-define them out of
77755a57 159 * existence for their counterparts in libzpool.
fcff0f35
PD		 160 *
161 * Here's an example of how to use the set-error probes in userland:
162 * zfs$target:::set-error /arg0 == EBUSY/ {stack();}
163 *
164 * Here's an example of how to use DTRACE_PROBE probes in userland:
165 * If there is a probe declared as follows:
166 * DTRACE_PROBE2(zfs__probe_name, uint64_t, blkid, dnode_t *, dn);
167 * Then you can use it as follows:
168 * zfs$target:::probe2 /copyinstr(arg0) == "zfs__probe_name"/
169 * {printf("%u %p\n", arg1, arg2);}
77755a57
BB		 170 */
171
172#ifdef DTRACE_PROBE
173#undef DTRACE_PROBE
77755a57 174#endif /* DTRACE_PROBE */
2e528b49
MA		 175#define DTRACE_PROBE(a) \
176 ZFS_PROBE0(#a)
77755a57
BB		 177
178#ifdef DTRACE_PROBE1
179#undef DTRACE_PROBE1
77755a57 180#endif /* DTRACE_PROBE1 */
2e528b49
MA		 181#define DTRACE_PROBE1(a, b, c) \
182 ZFS_PROBE1(#a, (unsigned long)c)
77755a57
BB		 183
184#ifdef DTRACE_PROBE2
185#undef DTRACE_PROBE2
77755a57 186#endif /* DTRACE_PROBE2 */
2e528b49
MA		 187#define DTRACE_PROBE2(a, b, c, d, e) \
188 ZFS_PROBE2(#a, (unsigned long)c, (unsigned long)e)
77755a57
BB		 189
190#ifdef DTRACE_PROBE3
191#undef DTRACE_PROBE3
77755a57 192#endif /* DTRACE_PROBE3 */
2e528b49
MA		 193#define DTRACE_PROBE3(a, b, c, d, e, f, g) \
194 ZFS_PROBE3(#a, (unsigned long)c, (unsigned long)e, (unsigned long)g)
77755a57
BB		 195
196#ifdef DTRACE_PROBE4
197#undef DTRACE_PROBE4
77755a57 198#endif /* DTRACE_PROBE4 */
2e528b49
MA		 199#define DTRACE_PROBE4(a, b, c, d, e, f, g, h, i) \
200 ZFS_PROBE4(#a, (unsigned long)c, (unsigned long)e, (unsigned long)g, \
201 (unsigned long)i)
77755a57
BB		 202
203/*
c25b8f99 204 * Threads.
77755a57 205 */
c25b8f99
BB		 206typedef pthread_t kthread_t;
207
208#define TS_RUN 0x00000002
209#define TS_JOINABLE 0x00000004
210
211#define curthread ((void *)(uintptr_t)pthread_self())
212#define kpreempt(x) yield()
213#define getcomm() "unknown"
214
215#define thread_create(stk, stksize, func, arg, len, pp, state, pri) \
216 zk_thread_create(func, arg, stksize, state)
217#define thread_exit() pthread_exit(NULL)
218#define thread_join(t) pthread_join((pthread_t)(t), NULL)
219
220#define newproc(f, a, cid, pri, ctp, pid) (ENOSYS)
428870ff 221
428870ff 222/* in libzpool, p0 exists only to have its address taken */
1e33ac1e 223typedef struct proc {
428870ff 224 uintptr_t this_is_never_used_dont_dereference_it;
1e33ac1e 225} proc_t;
428870ff
BB		 226
227extern struct proc p0;
37abac6d 228#define curproc (&p0)
428870ff 229
c25b8f99 230#define PS_NONE -1
77755a57 231
c25b8f99
BB		 232extern kthread_t *zk_thread_create(void (*func)(void *), void *arg,
233 size_t stksize, int state);
1e33ac1e 234
c25b8f99
BB		 235#define issig(why) (FALSE)
236#define ISSIG(thr, why) (FALSE)
1e33ac1e 237
15a9e033
PS		 238#define kpreempt_disable() ((void)0)
239#define kpreempt_enable() ((void)0)
8d9e51c0 240#define cond_resched() sched_yield()
15a9e033 241
77755a57
BB		 242/*
243 * Mutexes
244 */
245typedef struct kmutex {
c25b8f99
BB		 246 pthread_mutex_t m_lock;
247 pthread_t m_owner;
77755a57
BB		 248} kmutex_t;
249
c25b8f99
BB		 250#define MUTEX_DEFAULT 0
251#define MUTEX_NOLOCKDEP MUTEX_DEFAULT
252#define MUTEX_HELD(mp) pthread_equal((mp)->m_owner, pthread_self())
253#define MUTEX_NOT_HELD(mp) !MUTEX_HELD(mp)
77755a57 254
1e33ac1e
BB		 255extern void mutex_init(kmutex_t *mp, char *name, int type, void *cookie);
256extern void mutex_destroy(kmutex_t *mp);
77755a57
BB		 257extern void mutex_enter(kmutex_t *mp);
258extern void mutex_exit(kmutex_t *mp);
259extern int mutex_tryenter(kmutex_t *mp);
77755a57
BB		 260
261/*
262 * RW locks
263 */
264typedef struct krwlock {
1e33ac1e 265 pthread_rwlock_t rw_lock;
c25b8f99 266 pthread_t rw_owner;
1e33ac1e 267 uint_t rw_readers;
77755a57
BB		 268} krwlock_t;
269
270typedef int krw_t;
271
c25b8f99
BB		 272#define RW_READER 0
273#define RW_WRITER 1
274#define RW_DEFAULT RW_READER
275#define RW_NOLOCKDEP RW_READER
77755a57 276
c25b8f99
BB		 277#define RW_READ_HELD(rw) ((rw)->rw_readers > 0)
278#define RW_WRITE_HELD(rw) pthread_equal((rw)->rw_owner, pthread_self())
279#define RW_LOCK_HELD(rw) (RW_READ_HELD(rw) || RW_WRITE_HELD(rw))
13fe0198 280
77755a57
BB		 281extern void rw_init(krwlock_t *rwlp, char *name, int type, void *arg);
282extern void rw_destroy(krwlock_t *rwlp);
283extern void rw_enter(krwlock_t *rwlp, krw_t rw);
284extern int rw_tryenter(krwlock_t *rwlp, krw_t rw);
285extern int rw_tryupgrade(krwlock_t *rwlp);
286extern void rw_exit(krwlock_t *rwlp);
287#define rw_downgrade(rwlp) do { } while (0)
288
c25b8f99
BB		 289/*
290 * Credentials
291 */
77755a57 292extern uid_t crgetuid(cred_t *cr);
6f1ffb06 293extern uid_t crgetruid(cred_t *cr);
77755a57
BB		 294extern gid_t crgetgid(cred_t *cr);
295extern int crgetngroups(cred_t *cr);
296extern gid_t *crgetgroups(cred_t *cr);
297
298/*
299 * Condition variables
300 */
c25b8f99 301typedef pthread_cond_t kcondvar_t;
77755a57 302
c25b8f99 303#define CV_DEFAULT 0
206971d2 304#define CALLOUT_FLAG_ABSOLUTE 0x2
77755a57
BB		 305
306extern void cv_init(kcondvar_t *cv, char *name, int type, void *arg);
307extern void cv_destroy(kcondvar_t *cv);
308extern void cv_wait(kcondvar_t *cv, kmutex_t *mp);
30af21b0 309extern int cv_wait_sig(kcondvar_t *cv, kmutex_t *mp);
77755a57 310extern clock_t cv_timedwait(kcondvar_t *cv, kmutex_t *mp, clock_t abstime);
63fd3c6c
AL		 311extern clock_t cv_timedwait_hires(kcondvar_t *cvp, kmutex_t *mp, hrtime_t tim,
312 hrtime_t res, int flag);
77755a57
BB		 313extern void cv_signal(kcondvar_t *cv);
314extern void cv_broadcast(kcondvar_t *cv);
c25b8f99 315
8fb1ede1 316#define cv_timedwait_io(cv, mp, at) cv_timedwait(cv, mp, at)
b64ccd6c
BB		 317#define cv_timedwait_sig(cv, mp, at) cv_timedwait(cv, mp, at)
318#define cv_wait_sig(cv, mp) cv_wait(cv, mp)
2e528b49 319#define cv_wait_io(cv, mp) cv_wait(cv, mp)
a9bb2b68
CC		 320#define cv_timedwait_sig_hires(cv, mp, t, r, f) \
321 cv_timedwait_hires(cv, mp, t, r, f)
77755a57 322
13fe0198
MA		 323/*
324 * Thread-specific data
325 */
326#define tsd_get(k) pthread_getspecific(k)
327#define tsd_set(k, v) pthread_setspecific(k, v)
328#define tsd_create(kp, d) pthread_key_create(kp, d)
329#define tsd_destroy(kp) /* nothing */
330
331/*
332 * Thread-specific data
333 */
334#define tsd_get(k) pthread_getspecific(k)
335#define tsd_set(k, v) pthread_setspecific(k, v)
336#define tsd_create(kp, d) pthread_key_create(kp, d)
337#define tsd_destroy(kp) /* nothing */
338
77755a57
BB		 339/*
340 * kstat creation, installation and deletion
341 */
330847ff
MA		 342extern kstat_t *kstat_create(const char *, int,
343 const char *, const char *, uchar_t, ulong_t, uchar_t);
4e21fd06 344extern void kstat_named_init(kstat_named_t *, const char *, uchar_t);
77755a57
BB		 345extern void kstat_install(kstat_t *);
346extern void kstat_delete(kstat_t *);
330847ff
MA		 347extern void kstat_waitq_enter(kstat_io_t *);
348extern void kstat_waitq_exit(kstat_io_t *);
349extern void kstat_runq_enter(kstat_io_t *);
350extern void kstat_runq_exit(kstat_io_t *);
351extern void kstat_waitq_to_runq(kstat_io_t *);
352extern void kstat_runq_back_to_waitq(kstat_io_t *);
1421c891
PS		 353extern void kstat_set_raw_ops(kstat_t *ksp,
354 int (*headers)(char *buf, size_t size),
355 int (*data)(char *buf, size_t size, void *data),
356 void *(*addr)(kstat_t *ksp, loff_t index));
77755a57 357
d1261452
JG		 358/*
359 * procfs list manipulation
360 */
361
362struct seq_file { };
363void seq_printf(struct seq_file *m, const char *fmt, ...);
364
365typedef struct procfs_list {
366 void *pl_private;
367 kmutex_t pl_lock;
368 list_t pl_list;
369 uint64_t pl_next_id;
370 size_t pl_node_offset;
371} procfs_list_t;
372
373typedef struct procfs_list_node {
374 list_node_t pln_link;
375 uint64_t pln_id;
376} procfs_list_node_t;
377
378void procfs_list_install(const char *module,
379 const char *name,
a887d653 380 mode_t mode,
d1261452
JG		 381 procfs_list_t *procfs_list,
382 int (*show)(struct seq_file *f, void *p),
383 int (*show_header)(struct seq_file *f),
384 int (*clear)(procfs_list_t *procfs_list),
385 size_t procfs_list_node_off);
386void procfs_list_uninstall(procfs_list_t *procfs_list);
387void procfs_list_destroy(procfs_list_t *procfs_list);
388void procfs_list_add(procfs_list_t *procfs_list, void *p);
389
77755a57
BB		 390/*
391 * Kernel memory
392 */
393#define KM_SLEEP UMEM_NOFAIL
394#define KM_PUSHPAGE KM_SLEEP
395#define KM_NOSLEEP UMEM_DEFAULT
d99a0153 396#define KM_NORMALPRI 0 /* not needed with UMEM_DEFAULT */
77755a57 397#define KMC_NODEBUG UMC_NODEBUG
ae6ba3db
BB		 398#define KMC_KMEM 0x0
399#define KMC_VMEM 0x0
77755a57
BB		 400#define kmem_alloc(_s, _f) umem_alloc(_s, _f)
401#define kmem_zalloc(_s, _f) umem_zalloc(_s, _f)
402#define kmem_free(_b, _s) umem_free(_b, _s)
00b46022
BB		 403#define vmem_alloc(_s, _f) kmem_alloc(_s, _f)
404#define vmem_zalloc(_s, _f) kmem_zalloc(_s, _f)
405#define vmem_free(_b, _s) kmem_free(_b, _s)
77755a57
BB		 406#define kmem_cache_create(_a, _b, _c, _d, _e, _f, _g, _h, _i) \
407 umem_cache_create(_a, _b, _c, _d, _e, _f, _g, _h, _i)
408#define kmem_cache_destroy(_c) umem_cache_destroy(_c)
409#define kmem_cache_alloc(_c, _f) umem_cache_alloc(_c, _f)
410#define kmem_cache_free(_c, _b) umem_cache_free(_c, _b)
411#define kmem_debugging() 0
669dedb3 412#define kmem_cache_reap_now(_c) umem_cache_reap_now(_c);
572e2857 413#define kmem_cache_set_move(_c, _cb) /* nothing */
ca67b33a 414#define vmem_qcache_reap(_v) /* nothing */
572e2857
BB		 415#define POINTER_INVALIDATE(_pp) /* nothing */
416#define POINTER_IS_VALID(_p) 0
77755a57 417
ca67b33a
MA		 418extern vmem_t *zio_arena;
419
77755a57
BB		 420typedef umem_cache_t kmem_cache_t;
421
572e2857
BB		 422typedef enum kmem_cbrc {
423 KMEM_CBRC_YES,
424 KMEM_CBRC_NO,
425 KMEM_CBRC_LATER,
426 KMEM_CBRC_DONT_NEED,
427 KMEM_CBRC_DONT_KNOW
428} kmem_cbrc_t;
429
77755a57
BB		 430/*
431 * Task queues
432 */
0b04990a
TC		 433
434#define TASKQ_NAMELEN 31
435
77755a57
BB		 436typedef uintptr_t taskqid_t;
437typedef void (task_func_t)(void *);
438
a38718a6
GA		 439typedef struct taskq_ent {
440 struct taskq_ent *tqent_next;
441 struct taskq_ent *tqent_prev;
442 task_func_t *tqent_func;
443 void *tqent_arg;
444 uintptr_t tqent_flags;
445} taskq_ent_t;
446
0b04990a
TC		 447typedef struct taskq {
448 char tq_name[TASKQ_NAMELEN + 1];
449 kmutex_t tq_lock;
450 krwlock_t tq_threadlock;
451 kcondvar_t tq_dispatch_cv;
452 kcondvar_t tq_wait_cv;
453 kthread_t **tq_threadlist;
454 int tq_flags;
455 int tq_active;
456 int tq_nthreads;
457 int tq_nalloc;
458 int tq_minalloc;
459 int tq_maxalloc;
460 kcondvar_t tq_maxalloc_cv;
461 int tq_maxalloc_wait;
462 taskq_ent_t *tq_freelist;
463 taskq_ent_t tq_task;
464} taskq_t;
465
a38718a6
GA		 466#define TQENT_FLAG_PREALLOC 0x1 /* taskq_dispatch_ent used */
467
77755a57
BB		 468#define TASKQ_PREPOPULATE 0x0001
469#define TASKQ_CPR_SAFE 0x0002 /* Use CPR safe protocol */
470#define TASKQ_DYNAMIC 0x0004 /* Use dynamic thread scheduling */
428870ff
BB		 471#define TASKQ_THREADS_CPU_PCT 0x0008 /* Scale # threads by # cpus */
472#define TASKQ_DC_BATCH 0x0010 /* Mark threads as batch */
77755a57
BB		 473
474#define TQ_SLEEP KM_SLEEP /* Can block for memory */
475#define TQ_NOSLEEP KM_NOSLEEP /* cannot block for memory; may fail */
428870ff
BB		 476#define TQ_NOQUEUE 0x02 /* Do not enqueue if can't dispatch */
477#define TQ_FRONT 0x08 /* Queue in front */
77755a57 478
48d3eb40
BB		 479#define TASKQID_INVALID ((taskqid_t)0)
480
77755a57 481extern taskq_t *system_taskq;
57ddcda1 482extern taskq_t *system_delay_taskq;
77755a57
BB		 483
484extern taskq_t *taskq_create(const char *, int, pri_t, int, int, uint_t);
428870ff
BB		 485#define taskq_create_proc(a, b, c, d, e, p, f) \
486 (taskq_create(a, b, c, d, e, f))
487#define taskq_create_sysdc(a, b, d, e, p, dc, f) \
488 (taskq_create(a, b, maxclsyspri, d, e, f))
77755a57 489extern taskqid_t taskq_dispatch(taskq_t *, task_func_t, void *, uint_t);
cc92e9d0
GW		 490extern taskqid_t taskq_dispatch_delay(taskq_t *, task_func_t, void *, uint_t,
491 clock_t);
a38718a6
GA		 492extern void taskq_dispatch_ent(taskq_t *, task_func_t, void *, uint_t,
493 taskq_ent_t *);
494extern int taskq_empty_ent(taskq_ent_t *);
495extern void taskq_init_ent(taskq_ent_t *);
77755a57
BB		 496extern void taskq_destroy(taskq_t *);
497extern void taskq_wait(taskq_t *);
044baf00 498extern void taskq_wait_id(taskq_t *, taskqid_t);
4f34bd97 499extern void taskq_wait_outstanding(taskq_t *, taskqid_t);
1e33ac1e 500extern int taskq_member(taskq_t *, kthread_t *);
cc92e9d0 501extern int taskq_cancel_id(taskq_t *, taskqid_t);
77755a57 502extern void system_taskq_init(void);
428870ff 503extern void system_taskq_fini(void);
77755a57
BB		 504
505#define XVA_MAPSIZE 3
506#define XVA_MAGIC 0x78766174
507
508/*
509 * vnodes
510 */
511typedef struct vnode {
512 uint64_t v_size;
513 int v_fd;
514 char *v_path;
9867e8be 515 int v_dump_fd;
77755a57
BB		 516} vnode_t;
517
9867e8be 518extern char *vn_dumpdir;
428870ff 519#define AV_SCANSTAMP_SZ 32 /* length of anti-virus scanstamp */
77755a57
BB		 520
521typedef struct xoptattr {
6413c95f 522 inode_timespec_t xoa_createtime; /* Create time of file */
77755a57
BB		 523 uint8_t xoa_archive;
524 uint8_t xoa_system;
525 uint8_t xoa_readonly;
526 uint8_t xoa_hidden;
527 uint8_t xoa_nounlink;
528 uint8_t xoa_immutable;
529 uint8_t xoa_appendonly;
530 uint8_t xoa_nodump;
531 uint8_t xoa_settable;
532 uint8_t xoa_opaque;
533 uint8_t xoa_av_quarantined;
534 uint8_t xoa_av_modified;
428870ff
BB		 535 uint8_t xoa_av_scanstamp[AV_SCANSTAMP_SZ];
536 uint8_t xoa_reparse;
572e2857
BB		 537 uint8_t xoa_offline;
538 uint8_t xoa_sparse;
77755a57
BB		 539} xoptattr_t;
540
541typedef struct vattr {
542 uint_t va_mask; /* bit-mask of attributes */
543 u_offset_t va_size; /* file size in bytes */
544} vattr_t;
545
546
547typedef struct xvattr {
548 vattr_t xva_vattr; /* Embedded vattr structure */
549 uint32_t xva_magic; /* Magic Number */
550 uint32_t xva_mapsize; /* Size of attr bitmap (32-bit words) */
551 uint32_t *xva_rtnattrmapp; /* Ptr to xva_rtnattrmap[] */
552 uint32_t xva_reqattrmap[XVA_MAPSIZE]; /* Requested attrs */
553 uint32_t xva_rtnattrmap[XVA_MAPSIZE]; /* Returned attrs */
554 xoptattr_t xva_xoptattrs; /* Optional attributes */
555} xvattr_t;
556
557typedef struct vsecattr {
558 uint_t vsa_mask; /* See below */
559 int vsa_aclcnt; /* ACL entry count */
560 void *vsa_aclentp; /* pointer to ACL entries */
561 int vsa_dfaclcnt; /* default ACL entry count */
562 void *vsa_dfaclentp; /* pointer to default ACL entries */
563 size_t vsa_aclentsz; /* ACE size in bytes of vsa_aclentp */
564} vsecattr_t;
565
566#define AT_TYPE 0x00001
567#define AT_MODE 0x00002
568#define AT_UID 0x00004
569#define AT_GID 0x00008
570#define AT_FSID 0x00010
571#define AT_NODEID 0x00020
572#define AT_NLINK 0x00040
573#define AT_SIZE 0x00080
574#define AT_ATIME 0x00100
575#define AT_MTIME 0x00200
576#define AT_CTIME 0x00400
577#define AT_RDEV 0x00800
578#define AT_BLKSIZE 0x01000
579#define AT_NBLOCKS 0x02000
580#define AT_SEQ 0x08000
581#define AT_XVATTR 0x10000
582
583#define CRCREAT 0
584
1b939560
BB		 585#define F_FREESP 11
586
428870ff
BB		 587extern int fop_getattr(vnode_t *vp, vattr_t *vap);
588
274091c0 589#define VOP_CLOSE(vp, f, c, o, cr, ct) vn_close(vp)
77755a57 590#define VOP_PUTPAGE(vp, of, sz, fl, cr, ct) 0
428870ff 591#define VOP_GETATTR(vp, vap, fl, cr, ct) fop_getattr((vp), (vap));
77755a57
BB		 592
593#define VOP_FSYNC(vp, f, cr, ct) fsync((vp)->v_fd)
594
1b939560
BB		 595#if defined(HAVE_FILE_FALLOCATE) && \
596 defined(FALLOC_FL_PUNCH_HOLE) && \
597 defined(FALLOC_FL_KEEP_SIZE)
598#define VOP_SPACE(vp, cmd, flck, fl, off, cr, ct) \
599 fallocate((vp)->v_fd, FALLOC_FL_PUNCH_HOLE | FALLOC_FL_KEEP_SIZE, \
600 (flck)->l_start, (flck)->l_len)
601#else
602#define VOP_SPACE(vp, cmd, flck, fl, off, cr, ct) (0)
603#endif
604
77755a57
BB		 605#define VN_RELE(vp) vn_close(vp)
606
607extern int vn_open(char *path, int x1, int oflags, int mode, vnode_t **vpp,
608 int x2, int x3);
609extern int vn_openat(char *path, int x1, int oflags, int mode, vnode_t **vpp,
610 int x2, int x3, vnode_t *vp, int fd);
611extern int vn_rdwr(int uio, vnode_t *vp, void *addr, ssize_t len,
612 offset_t offset, int x1, int x2, rlim64_t x3, void *x4, ssize_t *residp);
613extern void vn_close(vnode_t *vp);
614
615#define vn_remove(path, x1, x2) remove(path)
616#define vn_rename(from, to, seg) rename((from), (to))
617#define vn_is_readonly(vp) B_FALSE
618
619extern vnode_t *rootdir;
620
621#include <sys/file.h> /* for FREAD, FWRITE, etc */
622
623/*
624 * Random stuff
625 */
428870ff
BB		 626#define ddi_get_lbolt() (gethrtime() >> 23)
627#define ddi_get_lbolt64() (gethrtime() >> 23)
77755a57
BB		 628#define hz 119 /* frequency when using gethrtime() >> 23 for lbolt */
629
0b75bdb3
CC		 630#define ddi_time_before(a, b) (a < b)
631#define ddi_time_after(a, b) ddi_time_before(b, a)
632#define ddi_time_before_eq(a, b) (!ddi_time_after(a, b))
633#define ddi_time_after_eq(a, b) ddi_time_before_eq(b, a)
634
635#define ddi_time_before64(a, b) (a < b)
636#define ddi_time_after64(a, b) ddi_time_before64(b, a)
637#define ddi_time_before_eq64(a, b) (!ddi_time_after64(a, b))
638#define ddi_time_after_eq64(a, b) ddi_time_before_eq64(b, a)
639
77755a57
BB		 640extern void delay(clock_t ticks);
641
cc92e9d0
GW		 642#define SEC_TO_TICK(sec) ((sec) * hz)
643#define MSEC_TO_TICK(msec) ((msec) / (MILLISEC / hz))
644#define USEC_TO_TICK(usec) ((usec) / (MICROSEC / hz))
645#define NSEC_TO_TICK(usec) ((usec) / (NANOSEC / hz))
646
77755a57 647#define max_ncpus 64
ca67b33a 648#define boot_ncpus (sysconf(_SC_NPROCESSORS_ONLN))
77755a57 649
1229323d
BB		 650/*
651 * Process priorities as defined by setpriority(2) and getpriority(2).
652 */
653#define minclsyspri 19
654#define maxclsyspri -20
655#define defclsyspri 0
77755a57 656
1a01c207 657#define CPU_SEQID ((uintptr_t)pthread_self() & (max_ncpus - 1))
77755a57
BB		 658
659#define kcred NULL
660#define CRED() NULL
661
662#define ptob(x) ((x) * PAGESIZE)
663
f3c8c9e6
JK		 664#define NN_DIVISOR_1000 (1U << 0)
665#define NN_NUMBUF_SZ (6)
666
77755a57 667extern uint64_t physmem;
e1a0850c
BB		 668extern char *random_path;
669extern char *urandom_path;
77755a57 670
9bd274dd 671extern int highbit64(uint64_t i);
193a37cb 672extern int lowbit64(uint64_t i);
77755a57
BB		 673extern int random_get_bytes(uint8_t *ptr, size_t len);
674extern int random_get_pseudo_bytes(uint8_t *ptr, size_t len);
675
676extern void kernel_init(int);
677extern void kernel_fini(void);
0b04990a
TC		 678extern void random_init(void);
679extern void random_fini(void);
77755a57
BB		 680
681struct spa;
77755a57 682extern void show_pool_stats(struct spa *);
ed828c0c 683extern int set_global_var(char *arg);
77755a57
BB		 684
685typedef struct callb_cpr {
686 kmutex_t *cc_lockp;
687} callb_cpr_t;
688
689#define CALLB_CPR_INIT(cp, lockp, func, name) { \
690 (cp)->cc_lockp = lockp; \
691}
692
693#define CALLB_CPR_SAFE_BEGIN(cp) { \
694 ASSERT(MUTEX_HELD((cp)->cc_lockp)); \
695}
696
697#define CALLB_CPR_SAFE_END(cp, lockp) { \
698 ASSERT(MUTEX_HELD((cp)->cc_lockp)); \
699}
700
701#define CALLB_CPR_EXIT(cp) { \
702 ASSERT(MUTEX_HELD((cp)->cc_lockp)); \
703 mutex_exit((cp)->cc_lockp); \
704}
705
706#define zone_dataset_visible(x, y) (1)
707#define INGLOBALZONE(z) (1)
6cb8e530 708extern uint32_t zone_get_hostid(void *zonep);
77755a57 709
00b46022 710extern char *kmem_vasprintf(const char *fmt, va_list adx);
428870ff 711extern char *kmem_asprintf(const char *fmt, ...);
13fe0198 712#define strfree(str) kmem_free((str), strlen(str) + 1)
428870ff 713
77755a57
BB		 714/*
715 * Hostname information
716 */
d164b209 717extern char hw_serial[]; /* for userland-emulated hostid access */
77755a57
BB		 718extern int ddi_strtoul(const char *str, char **nptr, int base,
719 unsigned long *result);
720
428870ff
BB		 721extern int ddi_strtoull(const char *str, char **nptr, int base,
722 u_longlong_t *result);
723
f0e324f2
BB		 724typedef struct utsname utsname_t;
725extern utsname_t *utsname(void);
726
77755a57
BB		 727/* ZFS Boot Related stuff. */
728
729struct _buf {
730 intptr_t _fd;
731};
732
733struct bootstat {
734 uint64_t st_size;
735};
736
737typedef struct ace_object {
738 uid_t a_who;
739 uint32_t a_access_mask;
740 uint16_t a_flags;
741 uint16_t a_type;
742 uint8_t a_obj_type[16];
743 uint8_t a_inherit_obj_type[16];
744} ace_object_t;
745
746
747#define ACE_ACCESS_ALLOWED_OBJECT_ACE_TYPE 0x05
748#define ACE_ACCESS_DENIED_OBJECT_ACE_TYPE 0x06
749#define ACE_SYSTEM_AUDIT_OBJECT_ACE_TYPE 0x07
750#define ACE_SYSTEM_ALARM_OBJECT_ACE_TYPE 0x08
751
752extern struct _buf *kobj_open_file(char *name);
753extern int kobj_read_file(struct _buf *file, char *buf, unsigned size,
754 unsigned off);
755extern void kobj_close_file(struct _buf *file);
756extern int kobj_get_filesize(struct _buf *file, uint64_t *size);
757extern int zfs_secpolicy_snapshot_perms(const char *name, cred_t *cr);
758extern int zfs_secpolicy_rename_perms(const char *from, const char *to,
759 cred_t *cr);
760extern int zfs_secpolicy_destroy_perms(const char *name, cred_t *cr);
f74b821a 761extern int secpolicy_zfs(const cred_t *cr);
77755a57
BB		 762extern zoneid_t getzoneid(void);
763
764/* SID stuff */
765typedef struct ksiddomain {
766 uint_t kd_ref;
767 uint_t kd_len;
768 char *kd_name;
769} ksiddomain_t;
770
771ksiddomain_t *ksid_lookupdomain(const char *);
772void ksiddomain_rele(ksiddomain_t *);
773
9babb374
BB		 774#define DDI_SLEEP KM_SLEEP
775#define ddi_log_sysevent(_a, _b, _c, _d, _e, _f, _g) \
776 sysevent_post_event(_c, _d, _b, "libzpool", _e, _f)
777
d1d7e268 778#define zfs_sleep_until(wakeup) \
e8b96c60
MA		 779 do { \
780 hrtime_t delta = wakeup - gethrtime(); \
781 struct timespec ts; \
782 ts.tv_sec = delta / NANOSEC; \
783 ts.tv_nsec = delta % NANOSEC; \
784 (void) nanosleep(&ts, NULL); \
785 } while (0)
786
92119cc2
BB		 787typedef int fstrans_cookie_t;
788
789extern fstrans_cookie_t spl_fstrans_mark(void);
790extern void spl_fstrans_unmark(fstrans_cookie_t);
e624cd19 791extern int __spl_pf_fstrans_check(void);
3ec34e55 792extern int kmem_cache_reap_active(void);
77755a57 793
37fb3e43
PD		 794#define ____cacheline_aligned
795
92119cc2 796#endif /* _KERNEL */
77755a57 797#endif /* _SYS_ZFS_CONTEXT_H */
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