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UBUNTU: SAUCE: (noup) Update spl to 0.6.5.9-1ubuntu2, zfs to 0.6.5.9-5ubuntu7
[mirror_ubuntu-artful-kernel.git] / zfs / include / sys / zfs_context.h
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87d546d8
TG		 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/*
22 * Copyright 2009 Sun Microsystems, Inc. All rights reserved.
23 * Use is subject to license terms.
24 */
25/*
26 * Copyright 2011 Nexenta Systems, Inc. All rights reserved.
27 * Copyright (c) 2012, Joyent, Inc. All rights reserved.
28 * Copyright (c) 2012, 2014 by Delphix. All rights reserved.
29 */
30
31#ifndef _SYS_ZFS_CONTEXT_H
32#define _SYS_ZFS_CONTEXT_H
33
34#ifdef __KERNEL__
35
36#include <sys/note.h>
37#include <sys/types.h>
38#include <sys/t_lock.h>
39#include <sys/atomic.h>
40#include <sys/sysmacros.h>
41#include <sys/bitmap.h>
42#include <sys/cmn_err.h>
43#include <sys/kmem.h>
44#include <sys/kmem_cache.h>
45#include <sys/vmem.h>
46#include <sys/taskq.h>
47#include <sys/buf.h>
48#include <sys/param.h>
49#include <sys/systm.h>
50#include <sys/cpuvar.h>
51#include <sys/kobj.h>
52#include <sys/conf.h>
53#include <sys/disp.h>
54#include <sys/debug.h>
55#include <sys/random.h>
56#include <sys/byteorder.h>
57#include <sys/systm.h>
58#include <sys/list.h>
59#include <sys/uio_impl.h>
60#include <sys/dirent.h>
61#include <sys/time.h>
62#include <vm/seg_kmem.h>
63#include <sys/zone.h>
64#include <sys/sdt.h>
65#include <sys/zfs_debug.h>
66#include <sys/zfs_delay.h>
67#include <sys/fm/fs/zfs.h>
68#include <sys/sunddi.h>
69#include <sys/ctype.h>
70#include <sys/disp.h>
71#include <sys/trace.h>
72#include <linux/dcache_compat.h>
73#include <linux/utsname_compat.h>
74
75#else /* _KERNEL */
76
77#define _SYS_MUTEX_H
78#define _SYS_RWLOCK_H
79#define _SYS_CONDVAR_H
80#define _SYS_SYSTM_H
81#define _SYS_T_LOCK_H
82#define _SYS_VNODE_H
83#define _SYS_VFS_H
84#define _SYS_SUNDDI_H
85#define _SYS_CALLB_H
86
87#include <stdio.h>
88#include <stdlib.h>
89#include <stddef.h>
90#include <stdarg.h>
91#include <fcntl.h>
92#include <unistd.h>
93#include <errno.h>
94#include <string.h>
95#include <strings.h>
96#include <pthread.h>
97#include <synch.h>
98#include <assert.h>
99#include <alloca.h>
100#include <umem.h>
101#include <limits.h>
102#include <atomic.h>
103#include <dirent.h>
104#include <time.h>
105#include <ctype.h>
106#include <signal.h>
107#include <sys/mman.h>
108#include <sys/note.h>
109#include <sys/types.h>
110#include <sys/cred.h>
111#include <sys/sysmacros.h>
112#include <sys/bitmap.h>
113#include <sys/resource.h>
114#include <sys/byteorder.h>
115#include <sys/list.h>
116#include <sys/uio.h>
117#include <sys/zfs_debug.h>
118#include <sys/sdt.h>
119#include <sys/kstat.h>
120#include <sys/u8_textprep.h>
121#include <sys/fm/fs/zfs.h>
122#include <sys/sunddi.h>
123#include <sys/debug.h>
124#include <sys/utsname.h>
125
126/*
127 * Stack
128 */
129
130#define noinline __attribute__((noinline))
131
132/*
133 * Debugging
134 */
135
136/*
137 * Note that we are not using the debugging levels.
138 */
139
140#define CE_CONT 0 /* continuation */
141#define CE_NOTE 1 /* notice */
142#define CE_WARN 2 /* warning */
143#define CE_PANIC 3 /* panic */
144#define CE_IGNORE 4 /* print nothing */
145
146/*
147 * ZFS debugging
148 */
149
150extern void dprintf_setup(int *argc, char **argv);
151
152extern void cmn_err(int, const char *, ...);
153extern void vcmn_err(int, const char *, va_list);
154extern void panic(const char *, ...);
155extern void vpanic(const char *, va_list);
156
157#define fm_panic panic
158
159extern int aok;
160
161/*
162 * DTrace SDT probes have different signatures in userland than they do in
163 * kernel. If they're being used in kernel code, re-define them out of
164 * existence for their counterparts in libzpool.
165 */
166
167#ifdef DTRACE_PROBE
168#undef DTRACE_PROBE
169#endif /* DTRACE_PROBE */
170#define DTRACE_PROBE(a) \
171 ZFS_PROBE0(#a)
172
173#ifdef DTRACE_PROBE1
174#undef DTRACE_PROBE1
175#endif /* DTRACE_PROBE1 */
176#define DTRACE_PROBE1(a, b, c) \
177 ZFS_PROBE1(#a, (unsigned long)c)
178
179#ifdef DTRACE_PROBE2
180#undef DTRACE_PROBE2
181#endif /* DTRACE_PROBE2 */
182#define DTRACE_PROBE2(a, b, c, d, e) \
183 ZFS_PROBE2(#a, (unsigned long)c, (unsigned long)e)
184
185#ifdef DTRACE_PROBE3
186#undef DTRACE_PROBE3
187#endif /* DTRACE_PROBE3 */
188#define DTRACE_PROBE3(a, b, c, d, e, f, g) \
189 ZFS_PROBE3(#a, (unsigned long)c, (unsigned long)e, (unsigned long)g)
190
191#ifdef DTRACE_PROBE4
192#undef DTRACE_PROBE4
193#endif /* DTRACE_PROBE4 */
194#define DTRACE_PROBE4(a, b, c, d, e, f, g, h, i) \
195 ZFS_PROBE4(#a, (unsigned long)c, (unsigned long)e, (unsigned long)g, \
196 (unsigned long)i)
197
198/*
199 * We use the comma operator so that this macro can be used without much
200 * additional code. For example, "return (EINVAL);" becomes
201 * "return (SET_ERROR(EINVAL));". Note that the argument will be evaluated
202 * twice, so it should not have side effects (e.g. something like:
203 * "return (SET_ERROR(log_error(EINVAL, info)));" would log the error twice).
204 */
205#define SET_ERROR(err) (ZFS_SET_ERROR(err), err)
206
207/*
208 * Threads. TS_STACK_MIN is dictated by the minimum allowed pthread stack
209 * size. While TS_STACK_MAX is somewhat arbitrary, it was selected to be
210 * large enough for the expected stack depth while small enough to avoid
211 * exhausting address space with high thread counts.
212 */
213#define TS_MAGIC 0x72f158ab4261e538ull
214#define TS_RUN 0x00000002
215#define TS_STACK_MIN PTHREAD_STACK_MIN
216#define TS_STACK_MAX (256 * 1024)
217
218/* in libzpool, p0 exists only to have its address taken */
219typedef struct proc {
220 uintptr_t this_is_never_used_dont_dereference_it;
221} proc_t;
222
223extern struct proc p0;
224#define curproc (&p0)
225
226typedef void (*thread_func_t)(void *);
227typedef void (*thread_func_arg_t)(void *);
228typedef pthread_t kt_did_t;
229
230#define kpreempt(x) ((void)0)
231
232typedef struct kthread {
233 kt_did_t t_tid;
234 thread_func_t t_func;
235 void * t_arg;
236 pri_t t_pri;
237} kthread_t;
238
239#define curthread zk_thread_current()
240#define getcomm() "unknown"
241#define thread_exit zk_thread_exit
242#define thread_create(stk, stksize, func, arg, len, pp, state, pri) \
243 zk_thread_create(stk, stksize, (thread_func_t)func, arg, \
244 len, NULL, state, pri, PTHREAD_CREATE_DETACHED)
245#define thread_join(t) zk_thread_join(t)
246#define newproc(f, a, cid, pri, ctp, pid) (ENOSYS)
247
248extern kthread_t *zk_thread_current(void);
249extern void zk_thread_exit(void);
250extern kthread_t *zk_thread_create(caddr_t stk, size_t stksize,
251 thread_func_t func, void *arg, size_t len,
252 proc_t *pp, int state, pri_t pri, int detachstate);
253extern void zk_thread_join(kt_did_t tid);
254
255#define kpreempt_disable() ((void)0)
256#define kpreempt_enable() ((void)0)
257
258#define PS_NONE -1
259
260#define issig(why) (FALSE)
261#define ISSIG(thr, why) (FALSE)
262
263/*
264 * Mutexes
265 */
266#define MTX_MAGIC 0x9522f51362a6e326ull
267#define MTX_INIT ((void *)NULL)
268#define MTX_DEST ((void *)-1UL)
269
270typedef struct kmutex {
271 void *m_owner;
272 uint64_t m_magic;
273 pthread_mutex_t m_lock;
274} kmutex_t;
275
276#define MUTEX_DEFAULT 0
277#define MUTEX_HELD(m) ((m)->m_owner == curthread)
278#define MUTEX_NOT_HELD(m) (!MUTEX_HELD(m))
279
280extern void mutex_init(kmutex_t *mp, char *name, int type, void *cookie);
281extern void mutex_destroy(kmutex_t *mp);
282extern void mutex_enter(kmutex_t *mp);
283extern void mutex_exit(kmutex_t *mp);
284extern int mutex_tryenter(kmutex_t *mp);
285extern void *mutex_owner(kmutex_t *mp);
286extern int mutex_held(kmutex_t *mp);
287
288/*
289 * RW locks
290 */
291#define RW_MAGIC 0x4d31fb123648e78aull
292#define RW_INIT ((void *)NULL)
293#define RW_DEST ((void *)-1UL)
294
295typedef struct krwlock {
296 void *rw_owner;
297 void *rw_wr_owner;
298 uint64_t rw_magic;
299 pthread_rwlock_t rw_lock;
300 uint_t rw_readers;
301} krwlock_t;
302
303typedef int krw_t;
304
305#define RW_READER 0
306#define RW_WRITER 1
307#define RW_DEFAULT RW_READER
308
309#define RW_READ_HELD(x) ((x)->rw_readers > 0)
310#define RW_WRITE_HELD(x) ((x)->rw_wr_owner == curthread)
311#define RW_LOCK_HELD(x) (RW_READ_HELD(x) || RW_WRITE_HELD(x))
312
313#undef RW_LOCK_HELD
314#define RW_LOCK_HELD(x) (RW_READ_HELD(x) || RW_WRITE_HELD(x))
315
316#undef RW_LOCK_HELD
317#define RW_LOCK_HELD(x) (RW_READ_HELD(x) || RW_WRITE_HELD(x))
318
319extern void rw_init(krwlock_t *rwlp, char *name, int type, void *arg);
320extern void rw_destroy(krwlock_t *rwlp);
321extern void rw_enter(krwlock_t *rwlp, krw_t rw);
322extern int rw_tryenter(krwlock_t *rwlp, krw_t rw);
323extern int rw_tryupgrade(krwlock_t *rwlp);
324extern void rw_exit(krwlock_t *rwlp);
325#define rw_downgrade(rwlp) do { } while (0)
326
327extern uid_t crgetuid(cred_t *cr);
328extern uid_t crgetruid(cred_t *cr);
329extern gid_t crgetgid(cred_t *cr);
330extern int crgetngroups(cred_t *cr);
331extern gid_t *crgetgroups(cred_t *cr);
332
333/*
334 * Condition variables
335 */
336#define CV_MAGIC 0xd31ea9a83b1b30c4ull
337
338typedef struct kcondvar {
339 uint64_t cv_magic;
340 pthread_cond_t cv;
341} kcondvar_t;
342
343#define CV_DEFAULT 0
344
345extern void cv_init(kcondvar_t *cv, char *name, int type, void *arg);
346extern void cv_destroy(kcondvar_t *cv);
347extern void cv_wait(kcondvar_t *cv, kmutex_t *mp);
348extern clock_t cv_timedwait(kcondvar_t *cv, kmutex_t *mp, clock_t abstime);
349extern clock_t cv_timedwait_hires(kcondvar_t *cvp, kmutex_t *mp, hrtime_t tim,
350 hrtime_t res, int flag);
351extern void cv_signal(kcondvar_t *cv);
352extern void cv_broadcast(kcondvar_t *cv);
353#define cv_timedwait_sig(cv, mp, at) cv_timedwait(cv, mp, at)
354#define cv_wait_sig(cv, mp) cv_wait(cv, mp)
355#define cv_wait_io(cv, mp) cv_wait(cv, mp)
356
357/*
358 * Thread-specific data
359 */
360#define tsd_get(k) pthread_getspecific(k)
361#define tsd_set(k, v) pthread_setspecific(k, v)
362#define tsd_create(kp, d) pthread_key_create(kp, d)
363#define tsd_destroy(kp) /* nothing */
364
365/*
366 * Thread-specific data
367 */
368#define tsd_get(k) pthread_getspecific(k)
369#define tsd_set(k, v) pthread_setspecific(k, v)
370#define tsd_create(kp, d) pthread_key_create(kp, d)
371#define tsd_destroy(kp) /* nothing */
372
373/*
374 * kstat creation, installation and deletion
375 */
376extern kstat_t *kstat_create(const char *, int,
377 const char *, const char *, uchar_t, ulong_t, uchar_t);
378extern void kstat_install(kstat_t *);
379extern void kstat_delete(kstat_t *);
380extern void kstat_waitq_enter(kstat_io_t *);
381extern void kstat_waitq_exit(kstat_io_t *);
382extern void kstat_runq_enter(kstat_io_t *);
383extern void kstat_runq_exit(kstat_io_t *);
384extern void kstat_waitq_to_runq(kstat_io_t *);
385extern void kstat_runq_back_to_waitq(kstat_io_t *);
386extern void kstat_set_raw_ops(kstat_t *ksp,
387 int (*headers)(char *buf, size_t size),
388 int (*data)(char *buf, size_t size, void *data),
389 void *(*addr)(kstat_t *ksp, loff_t index));
390
391/*
392 * Kernel memory
393 */
394#define KM_SLEEP UMEM_NOFAIL
395#define KM_PUSHPAGE KM_SLEEP
396#define KM_NOSLEEP UMEM_DEFAULT
397#define KMC_NODEBUG UMC_NODEBUG
398#define KMC_KMEM 0x0
399#define KMC_VMEM 0x0
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)
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)
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
412#define kmem_cache_reap_now(_c) umem_cache_reap_now(_c);
413#define kmem_cache_set_move(_c, _cb) /* nothing */
414#define vmem_qcache_reap(_v) /* nothing */
415#define POINTER_INVALIDATE(_pp) /* nothing */
416#define POINTER_IS_VALID(_p) 0
417
418extern vmem_t *zio_arena;
419
420typedef umem_cache_t kmem_cache_t;
421
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
430/*
431 * Task queues
432 */
433typedef struct taskq taskq_t;
434typedef uintptr_t taskqid_t;
435typedef void (task_func_t)(void *);
436
437typedef struct taskq_ent {
438 struct taskq_ent *tqent_next;
439 struct taskq_ent *tqent_prev;
440 task_func_t *tqent_func;
441 void *tqent_arg;
442 uintptr_t tqent_flags;
443} taskq_ent_t;
444
445#define TQENT_FLAG_PREALLOC 0x1 /* taskq_dispatch_ent used */
446
447#define TASKQ_PREPOPULATE 0x0001
448#define TASKQ_CPR_SAFE 0x0002 /* Use CPR safe protocol */
449#define TASKQ_DYNAMIC 0x0004 /* Use dynamic thread scheduling */
450#define TASKQ_THREADS_CPU_PCT 0x0008 /* Scale # threads by # cpus */
451#define TASKQ_DC_BATCH 0x0010 /* Mark threads as batch */
452
453#define TQ_SLEEP KM_SLEEP /* Can block for memory */
454#define TQ_NOSLEEP KM_NOSLEEP /* cannot block for memory; may fail */
455#define TQ_NOQUEUE 0x02 /* Do not enqueue if can't dispatch */
456#define TQ_FRONT 0x08 /* Queue in front */
457
458extern taskq_t *system_taskq;
459
460extern taskq_t *taskq_create(const char *, int, pri_t, int, int, uint_t);
461#define taskq_create_proc(a, b, c, d, e, p, f) \
462 (taskq_create(a, b, c, d, e, f))
463#define taskq_create_sysdc(a, b, d, e, p, dc, f) \
464 (taskq_create(a, b, maxclsyspri, d, e, f))
465extern taskqid_t taskq_dispatch(taskq_t *, task_func_t, void *, uint_t);
466extern taskqid_t taskq_dispatch_delay(taskq_t *, task_func_t, void *, uint_t,
467 clock_t);
468extern void taskq_dispatch_ent(taskq_t *, task_func_t, void *, uint_t,
469 taskq_ent_t *);
470extern int taskq_empty_ent(taskq_ent_t *);
471extern void taskq_init_ent(taskq_ent_t *);
472extern void taskq_destroy(taskq_t *);
473extern void taskq_wait(taskq_t *);
474extern void taskq_wait_id(taskq_t *, taskqid_t);
475extern void taskq_wait_outstanding(taskq_t *, taskqid_t);
476extern int taskq_member(taskq_t *, kthread_t *);
477extern int taskq_cancel_id(taskq_t *, taskqid_t);
478extern void system_taskq_init(void);
479extern void system_taskq_fini(void);
480
481#define XVA_MAPSIZE 3
482#define XVA_MAGIC 0x78766174
483
484/*
485 * vnodes
486 */
487typedef struct vnode {
488 uint64_t v_size;
489 int v_fd;
490 char *v_path;
491} vnode_t;
492
493#define AV_SCANSTAMP_SZ 32 /* length of anti-virus scanstamp */
494
495typedef struct xoptattr {
496 timestruc_t xoa_createtime; /* Create time of file */
497 uint8_t xoa_archive;
498 uint8_t xoa_system;
499 uint8_t xoa_readonly;
500 uint8_t xoa_hidden;
501 uint8_t xoa_nounlink;
502 uint8_t xoa_immutable;
503 uint8_t xoa_appendonly;
504 uint8_t xoa_nodump;
505 uint8_t xoa_settable;
506 uint8_t xoa_opaque;
507 uint8_t xoa_av_quarantined;
508 uint8_t xoa_av_modified;
509 uint8_t xoa_av_scanstamp[AV_SCANSTAMP_SZ];
510 uint8_t xoa_reparse;
511 uint8_t xoa_offline;
512 uint8_t xoa_sparse;
513} xoptattr_t;
514
515typedef struct vattr {
516 uint_t va_mask; /* bit-mask of attributes */
517 u_offset_t va_size; /* file size in bytes */
518} vattr_t;
519
520
521typedef struct xvattr {
522 vattr_t xva_vattr; /* Embedded vattr structure */
523 uint32_t xva_magic; /* Magic Number */
524 uint32_t xva_mapsize; /* Size of attr bitmap (32-bit words) */
525 uint32_t *xva_rtnattrmapp; /* Ptr to xva_rtnattrmap[] */
526 uint32_t xva_reqattrmap[XVA_MAPSIZE]; /* Requested attrs */
527 uint32_t xva_rtnattrmap[XVA_MAPSIZE]; /* Returned attrs */
528 xoptattr_t xva_xoptattrs; /* Optional attributes */
529} xvattr_t;
530
531typedef struct vsecattr {
532 uint_t vsa_mask; /* See below */
533 int vsa_aclcnt; /* ACL entry count */
534 void *vsa_aclentp; /* pointer to ACL entries */
535 int vsa_dfaclcnt; /* default ACL entry count */
536 void *vsa_dfaclentp; /* pointer to default ACL entries */
537 size_t vsa_aclentsz; /* ACE size in bytes of vsa_aclentp */
538} vsecattr_t;
539
540#define AT_TYPE 0x00001
541#define AT_MODE 0x00002
542#define AT_UID 0x00004
543#define AT_GID 0x00008
544#define AT_FSID 0x00010
545#define AT_NODEID 0x00020
546#define AT_NLINK 0x00040
547#define AT_SIZE 0x00080
548#define AT_ATIME 0x00100
549#define AT_MTIME 0x00200
550#define AT_CTIME 0x00400
551#define AT_RDEV 0x00800
552#define AT_BLKSIZE 0x01000
553#define AT_NBLOCKS 0x02000
554#define AT_SEQ 0x08000
555#define AT_XVATTR 0x10000
556
557#define CRCREAT 0
558
559extern int fop_getattr(vnode_t *vp, vattr_t *vap);
560
561#define VOP_CLOSE(vp, f, c, o, cr, ct) vn_close(vp)
562#define VOP_PUTPAGE(vp, of, sz, fl, cr, ct) 0
563#define VOP_GETATTR(vp, vap, fl, cr, ct) fop_getattr((vp), (vap));
564
565#define VOP_FSYNC(vp, f, cr, ct) fsync((vp)->v_fd)
566
567#define VN_RELE(vp) vn_close(vp)
568
569extern int vn_open(char *path, int x1, int oflags, int mode, vnode_t **vpp,
570 int x2, int x3);
571extern int vn_openat(char *path, int x1, int oflags, int mode, vnode_t **vpp,
572 int x2, int x3, vnode_t *vp, int fd);
573extern int vn_rdwr(int uio, vnode_t *vp, void *addr, ssize_t len,
574 offset_t offset, int x1, int x2, rlim64_t x3, void *x4, ssize_t *residp);
575extern void vn_close(vnode_t *vp);
576
577#define vn_remove(path, x1, x2) remove(path)
578#define vn_rename(from, to, seg) rename((from), (to))
579#define vn_is_readonly(vp) B_FALSE
580
581extern vnode_t *rootdir;
582
583#include <sys/file.h> /* for FREAD, FWRITE, etc */
584
585/*
586 * Random stuff
587 */
588#define ddi_get_lbolt() (gethrtime() >> 23)
589#define ddi_get_lbolt64() (gethrtime() >> 23)
590#define hz 119 /* frequency when using gethrtime() >> 23 for lbolt */
591
592#define ddi_time_before(a, b) (a < b)
593#define ddi_time_after(a, b) ddi_time_before(b, a)
594#define ddi_time_before_eq(a, b) (!ddi_time_after(a, b))
595#define ddi_time_after_eq(a, b) ddi_time_before_eq(b, a)
596
597#define ddi_time_before64(a, b) (a < b)
598#define ddi_time_after64(a, b) ddi_time_before64(b, a)
599#define ddi_time_before_eq64(a, b) (!ddi_time_after64(a, b))
600#define ddi_time_after_eq64(a, b) ddi_time_before_eq64(b, a)
601
602extern void delay(clock_t ticks);
603
604#define SEC_TO_TICK(sec) ((sec) * hz)
605#define MSEC_TO_TICK(msec) ((msec) / (MILLISEC / hz))
606#define USEC_TO_TICK(usec) ((usec) / (MICROSEC / hz))
607#define NSEC_TO_TICK(usec) ((usec) / (NANOSEC / hz))
608
609#define gethrestime_sec() time(NULL)
610#define gethrestime(t) \
611 do {\
612 (t)->tv_sec = gethrestime_sec();\
613 (t)->tv_nsec = 0;\
614 } while (0);
615
616#define max_ncpus 64
617#define boot_ncpus (sysconf(_SC_NPROCESSORS_ONLN))
618
619/*
620 * Process priorities as defined by setpriority(2) and getpriority(2).
621 */
622#define minclsyspri 19
623#define maxclsyspri -20
624#define defclsyspri 0
625
626#define CPU_SEQID (pthread_self() & (max_ncpus - 1))
627
628#define kcred NULL
629#define CRED() NULL
630
631#define ptob(x) ((x) * PAGESIZE)
632
633extern uint64_t physmem;
634
635extern int highbit64(uint64_t i);
636extern int random_get_bytes(uint8_t *ptr, size_t len);
637extern int random_get_pseudo_bytes(uint8_t *ptr, size_t len);
638
639extern void kernel_init(int);
640extern void kernel_fini(void);
641
642struct spa;
643extern void nicenum(uint64_t num, char *buf);
644extern void show_pool_stats(struct spa *);
645
646typedef struct callb_cpr {
647 kmutex_t *cc_lockp;
648} callb_cpr_t;
649
650#define CALLB_CPR_INIT(cp, lockp, func, name) { \
651 (cp)->cc_lockp = lockp; \
652}
653
654#define CALLB_CPR_SAFE_BEGIN(cp) { \
655 ASSERT(MUTEX_HELD((cp)->cc_lockp)); \
656}
657
658#define CALLB_CPR_SAFE_END(cp, lockp) { \
659 ASSERT(MUTEX_HELD((cp)->cc_lockp)); \
660}
661
662#define CALLB_CPR_EXIT(cp) { \
663 ASSERT(MUTEX_HELD((cp)->cc_lockp)); \
664 mutex_exit((cp)->cc_lockp); \
665}
666
667#define zone_dataset_visible(x, y) (1)
668#define INGLOBALZONE(z) (1)
669
670extern char *kmem_vasprintf(const char *fmt, va_list adx);
671extern char *kmem_asprintf(const char *fmt, ...);
672#define strfree(str) kmem_free((str), strlen(str) + 1)
673
674/*
675 * Hostname information
676 */
677extern char hw_serial[]; /* for userland-emulated hostid access */
678extern int ddi_strtoul(const char *str, char **nptr, int base,
679 unsigned long *result);
680
681extern int ddi_strtoull(const char *str, char **nptr, int base,
682 u_longlong_t *result);
683
684typedef struct utsname utsname_t;
685extern utsname_t *utsname(void);
686
687/* ZFS Boot Related stuff. */
688
689struct _buf {
690 intptr_t _fd;
691};
692
693struct bootstat {
694 uint64_t st_size;
695};
696
697typedef struct ace_object {
698 uid_t a_who;
699 uint32_t a_access_mask;
700 uint16_t a_flags;
701 uint16_t a_type;
702 uint8_t a_obj_type[16];
703 uint8_t a_inherit_obj_type[16];
704} ace_object_t;
705
706
707#define ACE_ACCESS_ALLOWED_OBJECT_ACE_TYPE 0x05
708#define ACE_ACCESS_DENIED_OBJECT_ACE_TYPE 0x06
709#define ACE_SYSTEM_AUDIT_OBJECT_ACE_TYPE 0x07
710#define ACE_SYSTEM_ALARM_OBJECT_ACE_TYPE 0x08
711
712extern struct _buf *kobj_open_file(char *name);
713extern int kobj_read_file(struct _buf *file, char *buf, unsigned size,
714 unsigned off);
715extern void kobj_close_file(struct _buf *file);
716extern int kobj_get_filesize(struct _buf *file, uint64_t *size);
717extern int zfs_secpolicy_snapshot_perms(const char *name, cred_t *cr);
718extern int zfs_secpolicy_rename_perms(const char *from, const char *to,
719 cred_t *cr);
720extern int zfs_secpolicy_destroy_perms(const char *name, cred_t *cr);
721extern zoneid_t getzoneid(void);
722
723/* SID stuff */
724typedef struct ksiddomain {
725 uint_t kd_ref;
726 uint_t kd_len;
727 char *kd_name;
728} ksiddomain_t;
729
730ksiddomain_t *ksid_lookupdomain(const char *);
731void ksiddomain_rele(ksiddomain_t *);
732
733#define DDI_SLEEP KM_SLEEP
734#define ddi_log_sysevent(_a, _b, _c, _d, _e, _f, _g) \
735 sysevent_post_event(_c, _d, _b, "libzpool", _e, _f)
736
737#define zfs_sleep_until(wakeup) \
738 do { \
739 hrtime_t delta = wakeup - gethrtime(); \
740 struct timespec ts; \
741 ts.tv_sec = delta / NANOSEC; \
742 ts.tv_nsec = delta % NANOSEC; \
743 (void) nanosleep(&ts, NULL); \
744 } while (0)
745
746typedef int fstrans_cookie_t;
747
748extern fstrans_cookie_t spl_fstrans_mark(void);
749extern void spl_fstrans_unmark(fstrans_cookie_t);
750extern int spl_fstrans_check(void);
df9d7621 751extern int __spl_pf_fstrans_check(void);
87d546d8
TG		 752
753#endif /* _KERNEL */
754#endif /* _SYS_ZFS_CONTEXT_H */
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