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Fix the test to use the variable
[mirror_zfs.git] / include / sys / zfs_context.h
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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 * the kernel. If they're being used in kernel code, re-define them out of
164 * existence for their counterparts in libzpool.
165 *
166 * Here's an example of how to use the set-error probes in userland:
167 * zfs$target:::set-error /arg0 == EBUSY/ {stack();}
168 *
169 * Here's an example of how to use DTRACE_PROBE probes in userland:
170 * If there is a probe declared as follows:
171 * DTRACE_PROBE2(zfs__probe_name, uint64_t, blkid, dnode_t *, dn);
172 * Then you can use it as follows:
173 * zfs$target:::probe2 /copyinstr(arg0) == "zfs__probe_name"/
174 * {printf("%u %p\n", arg1, arg2);}
175 */
176
177#ifdef DTRACE_PROBE
178#undef DTRACE_PROBE
179#endif /* DTRACE_PROBE */
180#define DTRACE_PROBE(a) \
181 ZFS_PROBE0(#a)
182
183#ifdef DTRACE_PROBE1
184#undef DTRACE_PROBE1
185#endif /* DTRACE_PROBE1 */
186#define DTRACE_PROBE1(a, b, c) \
187 ZFS_PROBE1(#a, (unsigned long)c)
188
189#ifdef DTRACE_PROBE2
190#undef DTRACE_PROBE2
191#endif /* DTRACE_PROBE2 */
192#define DTRACE_PROBE2(a, b, c, d, e) \
193 ZFS_PROBE2(#a, (unsigned long)c, (unsigned long)e)
194
195#ifdef DTRACE_PROBE3
196#undef DTRACE_PROBE3
197#endif /* DTRACE_PROBE3 */
198#define DTRACE_PROBE3(a, b, c, d, e, f, g) \
199 ZFS_PROBE3(#a, (unsigned long)c, (unsigned long)e, (unsigned long)g)
200
201#ifdef DTRACE_PROBE4
202#undef DTRACE_PROBE4
203#endif /* DTRACE_PROBE4 */
204#define DTRACE_PROBE4(a, b, c, d, e, f, g, h, i) \
205 ZFS_PROBE4(#a, (unsigned long)c, (unsigned long)e, (unsigned long)g, \
206 (unsigned long)i)
207
208/*
209 * We use the comma operator so that this macro can be used without much
210 * additional code. For example, "return (EINVAL);" becomes
211 * "return (SET_ERROR(EINVAL));". Note that the argument will be evaluated
212 * twice, so it should not have side effects (e.g. something like:
213 * "return (SET_ERROR(log_error(EINVAL, info)));" would log the error twice).
214 */
215#define SET_ERROR(err) (ZFS_SET_ERROR(err), err)
216
217/*
218 * Threads. TS_STACK_MIN is dictated by the minimum allowed pthread stack
219 * size. While TS_STACK_MAX is somewhat arbitrary, it was selected to be
220 * large enough for the expected stack depth while small enough to avoid
221 * exhausting address space with high thread counts.
222 */
223#define TS_MAGIC 0x72f158ab4261e538ull
224#define TS_RUN 0x00000002
225#define TS_STACK_MIN MAX(PTHREAD_STACK_MIN, 32768)
226#define TS_STACK_MAX (256 * 1024)
227
228/* in libzpool, p0 exists only to have its address taken */
229typedef struct proc {
230 uintptr_t this_is_never_used_dont_dereference_it;
231} proc_t;
232
233extern struct proc p0;
234#define curproc (&p0)
235
236typedef void (*thread_func_t)(void *);
237typedef void (*thread_func_arg_t)(void *);
238typedef pthread_t kt_did_t;
239
240#define kpreempt(x) ((void)0)
241
242typedef struct kthread {
243 kt_did_t t_tid;
244 thread_func_t t_func;
245 void * t_arg;
246 pri_t t_pri;
247} kthread_t;
248
249#define curthread zk_thread_current()
250#define getcomm() "unknown"
251#define thread_exit zk_thread_exit
252#define thread_create(stk, stksize, func, arg, len, pp, state, pri) \
253 zk_thread_create(stk, stksize, (thread_func_t)func, arg, \
254 len, NULL, state, pri, PTHREAD_CREATE_DETACHED)
255#define thread_join(t) zk_thread_join(t)
256#define newproc(f, a, cid, pri, ctp, pid) (ENOSYS)
257
258extern kthread_t *zk_thread_current(void);
259extern void zk_thread_exit(void);
260extern kthread_t *zk_thread_create(caddr_t stk, size_t stksize,
261 thread_func_t func, void *arg, size_t len,
262 proc_t *pp, int state, pri_t pri, int detachstate);
263extern void zk_thread_join(kt_did_t tid);
264
265#define kpreempt_disable() ((void)0)
266#define kpreempt_enable() ((void)0)
267
268#define PS_NONE -1
269
270#define issig(why) (FALSE)
271#define ISSIG(thr, why) (FALSE)
272
273/*
274 * Mutexes
275 */
276#define MTX_MAGIC 0x9522f51362a6e326ull
277#define MTX_INIT ((void *)NULL)
278#define MTX_DEST ((void *)-1UL)
279
280typedef struct kmutex {
281 void *m_owner;
282 uint64_t m_magic;
283 pthread_mutex_t m_lock;
284} kmutex_t;
285
286#define MUTEX_DEFAULT 0
287#define MUTEX_NOLOCKDEP MUTEX_DEFAULT
288#define MUTEX_HELD(m) ((m)->m_owner == curthread)
289#define MUTEX_NOT_HELD(m) (!MUTEX_HELD(m))
290
291extern void mutex_init(kmutex_t *mp, char *name, int type, void *cookie);
292extern void mutex_destroy(kmutex_t *mp);
293extern void mutex_enter(kmutex_t *mp);
294extern void mutex_exit(kmutex_t *mp);
295extern int mutex_tryenter(kmutex_t *mp);
296extern void *mutex_owner(kmutex_t *mp);
297extern int mutex_held(kmutex_t *mp);
298
299/*
300 * RW locks
301 */
302#define RW_MAGIC 0x4d31fb123648e78aull
303#define RW_INIT ((void *)NULL)
304#define RW_DEST ((void *)-1UL)
305
306typedef struct krwlock {
307 void *rw_owner;
308 void *rw_wr_owner;
309 uint64_t rw_magic;
310 pthread_rwlock_t rw_lock;
311 uint_t rw_readers;
312} krwlock_t;
313
314typedef int krw_t;
315
316#define RW_READER 0
317#define RW_WRITER 1
318#define RW_DEFAULT RW_READER
319#define RW_NOLOCKDEP RW_READER
320
321#define RW_READ_HELD(x) ((x)->rw_readers > 0)
322#define RW_WRITE_HELD(x) ((x)->rw_wr_owner == curthread)
323#define RW_LOCK_HELD(x) (RW_READ_HELD(x) || RW_WRITE_HELD(x))
324
325#undef RW_LOCK_HELD
326#define RW_LOCK_HELD(x) (RW_READ_HELD(x) || RW_WRITE_HELD(x))
327
328#undef RW_LOCK_HELD
329#define RW_LOCK_HELD(x) (RW_READ_HELD(x) || RW_WRITE_HELD(x))
330
331extern void rw_init(krwlock_t *rwlp, char *name, int type, void *arg);
332extern void rw_destroy(krwlock_t *rwlp);
333extern void rw_enter(krwlock_t *rwlp, krw_t rw);
334extern int rw_tryenter(krwlock_t *rwlp, krw_t rw);
335extern int rw_tryupgrade(krwlock_t *rwlp);
336extern void rw_exit(krwlock_t *rwlp);
337#define rw_downgrade(rwlp) do { } while (0)
338
339extern uid_t crgetuid(cred_t *cr);
340extern uid_t crgetruid(cred_t *cr);
341extern gid_t crgetgid(cred_t *cr);
342extern int crgetngroups(cred_t *cr);
343extern gid_t *crgetgroups(cred_t *cr);
344
345/*
346 * Condition variables
347 */
348#define CV_MAGIC 0xd31ea9a83b1b30c4ull
349
350typedef struct kcondvar {
351 uint64_t cv_magic;
352 pthread_cond_t cv;
353} kcondvar_t;
354
355#define CV_DEFAULT 0
356
357extern void cv_init(kcondvar_t *cv, char *name, int type, void *arg);
358extern void cv_destroy(kcondvar_t *cv);
359extern void cv_wait(kcondvar_t *cv, kmutex_t *mp);
360extern clock_t cv_timedwait(kcondvar_t *cv, kmutex_t *mp, clock_t abstime);
361extern clock_t cv_timedwait_hires(kcondvar_t *cvp, kmutex_t *mp, hrtime_t tim,
362 hrtime_t res, int flag);
363extern void cv_signal(kcondvar_t *cv);
364extern void cv_broadcast(kcondvar_t *cv);
365#define cv_timedwait_sig(cv, mp, at) cv_timedwait(cv, mp, at)
366#define cv_wait_sig(cv, mp) cv_wait(cv, mp)
367#define cv_wait_io(cv, mp) cv_wait(cv, mp)
368#define cv_timedwait_sig_hires(cv, mp, t, r, f) \
369 cv_timedwait_hires(cv, mp, t, r, f)
370
371/*
372 * Thread-specific data
373 */
374#define tsd_get(k) pthread_getspecific(k)
375#define tsd_set(k, v) pthread_setspecific(k, v)
376#define tsd_create(kp, d) pthread_key_create(kp, d)
377#define tsd_destroy(kp) /* nothing */
378
379/*
380 * Thread-specific data
381 */
382#define tsd_get(k) pthread_getspecific(k)
383#define tsd_set(k, v) pthread_setspecific(k, v)
384#define tsd_create(kp, d) pthread_key_create(kp, d)
385#define tsd_destroy(kp) /* nothing */
386
387/*
388 * kstat creation, installation and deletion
389 */
390extern kstat_t *kstat_create(const char *, int,
391 const char *, const char *, uchar_t, ulong_t, uchar_t);
392extern void kstat_install(kstat_t *);
393extern void kstat_delete(kstat_t *);
394extern void kstat_waitq_enter(kstat_io_t *);
395extern void kstat_waitq_exit(kstat_io_t *);
396extern void kstat_runq_enter(kstat_io_t *);
397extern void kstat_runq_exit(kstat_io_t *);
398extern void kstat_waitq_to_runq(kstat_io_t *);
399extern void kstat_runq_back_to_waitq(kstat_io_t *);
400extern void kstat_set_raw_ops(kstat_t *ksp,
401 int (*headers)(char *buf, size_t size),
402 int (*data)(char *buf, size_t size, void *data),
403 void *(*addr)(kstat_t *ksp, loff_t index));
404
405/*
406 * Kernel memory
407 */
408#define KM_SLEEP UMEM_NOFAIL
409#define KM_PUSHPAGE KM_SLEEP
410#define KM_NOSLEEP UMEM_DEFAULT
411#define KMC_NODEBUG UMC_NODEBUG
412#define KMC_KMEM 0x0
413#define KMC_VMEM 0x0
414#define kmem_alloc(_s, _f) umem_alloc(_s, _f)
415#define kmem_zalloc(_s, _f) umem_zalloc(_s, _f)
416#define kmem_free(_b, _s) umem_free(_b, _s)
417#define vmem_alloc(_s, _f) kmem_alloc(_s, _f)
418#define vmem_zalloc(_s, _f) kmem_zalloc(_s, _f)
419#define vmem_free(_b, _s) kmem_free(_b, _s)
420#define kmem_cache_create(_a, _b, _c, _d, _e, _f, _g, _h, _i) \
421 umem_cache_create(_a, _b, _c, _d, _e, _f, _g, _h, _i)
422#define kmem_cache_destroy(_c) umem_cache_destroy(_c)
423#define kmem_cache_alloc(_c, _f) umem_cache_alloc(_c, _f)
424#define kmem_cache_free(_c, _b) umem_cache_free(_c, _b)
425#define kmem_debugging() 0
426#define kmem_cache_reap_now(_c) umem_cache_reap_now(_c);
427#define kmem_cache_set_move(_c, _cb) /* nothing */
428#define vmem_qcache_reap(_v) /* nothing */
429#define POINTER_INVALIDATE(_pp) /* nothing */
430#define POINTER_IS_VALID(_p) 0
431
432extern vmem_t *zio_arena;
433
434typedef umem_cache_t kmem_cache_t;
435
436typedef enum kmem_cbrc {
437 KMEM_CBRC_YES,
438 KMEM_CBRC_NO,
439 KMEM_CBRC_LATER,
440 KMEM_CBRC_DONT_NEED,
441 KMEM_CBRC_DONT_KNOW
442} kmem_cbrc_t;
443
444/*
445 * Task queues
446 */
447typedef struct taskq taskq_t;
448typedef uintptr_t taskqid_t;
449typedef void (task_func_t)(void *);
450
451typedef struct taskq_ent {
452 struct taskq_ent *tqent_next;
453 struct taskq_ent *tqent_prev;
454 task_func_t *tqent_func;
455 void *tqent_arg;
456 uintptr_t tqent_flags;
457} taskq_ent_t;
458
459#define TQENT_FLAG_PREALLOC 0x1 /* taskq_dispatch_ent used */
460
461#define TASKQ_PREPOPULATE 0x0001
462#define TASKQ_CPR_SAFE 0x0002 /* Use CPR safe protocol */
463#define TASKQ_DYNAMIC 0x0004 /* Use dynamic thread scheduling */
464#define TASKQ_THREADS_CPU_PCT 0x0008 /* Scale # threads by # cpus */
465#define TASKQ_DC_BATCH 0x0010 /* Mark threads as batch */
466
467#define TQ_SLEEP KM_SLEEP /* Can block for memory */
468#define TQ_NOSLEEP KM_NOSLEEP /* cannot block for memory; may fail */
469#define TQ_NOQUEUE 0x02 /* Do not enqueue if can't dispatch */
470#define TQ_FRONT 0x08 /* Queue in front */
471
472extern taskq_t *system_taskq;
473
474extern taskq_t *taskq_create(const char *, int, pri_t, int, int, uint_t);
475#define taskq_create_proc(a, b, c, d, e, p, f) \
476 (taskq_create(a, b, c, d, e, f))
477#define taskq_create_sysdc(a, b, d, e, p, dc, f) \
478 (taskq_create(a, b, maxclsyspri, d, e, f))
479extern taskqid_t taskq_dispatch(taskq_t *, task_func_t, void *, uint_t);
480extern taskqid_t taskq_dispatch_delay(taskq_t *, task_func_t, void *, uint_t,
481 clock_t);
482extern void taskq_dispatch_ent(taskq_t *, task_func_t, void *, uint_t,
483 taskq_ent_t *);
484extern int taskq_empty_ent(taskq_ent_t *);
485extern void taskq_init_ent(taskq_ent_t *);
486extern void taskq_destroy(taskq_t *);
487extern void taskq_wait(taskq_t *);
488extern void taskq_wait_id(taskq_t *, taskqid_t);
489extern void taskq_wait_outstanding(taskq_t *, taskqid_t);
490extern int taskq_member(taskq_t *, kthread_t *);
491extern int taskq_cancel_id(taskq_t *, taskqid_t);
492extern void system_taskq_init(void);
493extern void system_taskq_fini(void);
494
495#define XVA_MAPSIZE 3
496#define XVA_MAGIC 0x78766174
497
498/*
499 * vnodes
500 */
501typedef struct vnode {
502 uint64_t v_size;
503 int v_fd;
504 char *v_path;
505 int v_dump_fd;
506} vnode_t;
507
508extern char *vn_dumpdir;
509#define AV_SCANSTAMP_SZ 32 /* length of anti-virus scanstamp */
510
511typedef struct xoptattr {
512 timestruc_t xoa_createtime; /* Create time of file */
513 uint8_t xoa_archive;
514 uint8_t xoa_system;
515 uint8_t xoa_readonly;
516 uint8_t xoa_hidden;
517 uint8_t xoa_nounlink;
518 uint8_t xoa_immutable;
519 uint8_t xoa_appendonly;
520 uint8_t xoa_nodump;
521 uint8_t xoa_settable;
522 uint8_t xoa_opaque;
523 uint8_t xoa_av_quarantined;
524 uint8_t xoa_av_modified;
525 uint8_t xoa_av_scanstamp[AV_SCANSTAMP_SZ];
526 uint8_t xoa_reparse;
527 uint8_t xoa_offline;
528 uint8_t xoa_sparse;
529} xoptattr_t;
530
531typedef struct vattr {
532 uint_t va_mask; /* bit-mask of attributes */
533 u_offset_t va_size; /* file size in bytes */
534} vattr_t;
535
536
537typedef struct xvattr {
538 vattr_t xva_vattr; /* Embedded vattr structure */
539 uint32_t xva_magic; /* Magic Number */
540 uint32_t xva_mapsize; /* Size of attr bitmap (32-bit words) */
541 uint32_t *xva_rtnattrmapp; /* Ptr to xva_rtnattrmap[] */
542 uint32_t xva_reqattrmap[XVA_MAPSIZE]; /* Requested attrs */
543 uint32_t xva_rtnattrmap[XVA_MAPSIZE]; /* Returned attrs */
544 xoptattr_t xva_xoptattrs; /* Optional attributes */
545} xvattr_t;
546
547typedef struct vsecattr {
548 uint_t vsa_mask; /* See below */
549 int vsa_aclcnt; /* ACL entry count */
550 void *vsa_aclentp; /* pointer to ACL entries */
551 int vsa_dfaclcnt; /* default ACL entry count */
552 void *vsa_dfaclentp; /* pointer to default ACL entries */
553 size_t vsa_aclentsz; /* ACE size in bytes of vsa_aclentp */
554} vsecattr_t;
555
556#define AT_TYPE 0x00001
557#define AT_MODE 0x00002
558#define AT_UID 0x00004
559#define AT_GID 0x00008
560#define AT_FSID 0x00010
561#define AT_NODEID 0x00020
562#define AT_NLINK 0x00040
563#define AT_SIZE 0x00080
564#define AT_ATIME 0x00100
565#define AT_MTIME 0x00200
566#define AT_CTIME 0x00400
567#define AT_RDEV 0x00800
568#define AT_BLKSIZE 0x01000
569#define AT_NBLOCKS 0x02000
570#define AT_SEQ 0x08000
571#define AT_XVATTR 0x10000
572
573#define CRCREAT 0
574
575extern int fop_getattr(vnode_t *vp, vattr_t *vap);
576
577#define VOP_CLOSE(vp, f, c, o, cr, ct) vn_close(vp)
578#define VOP_PUTPAGE(vp, of, sz, fl, cr, ct) 0
579#define VOP_GETATTR(vp, vap, fl, cr, ct) fop_getattr((vp), (vap));
580
581#define VOP_FSYNC(vp, f, cr, ct) fsync((vp)->v_fd)
582
583#define VN_RELE(vp) vn_close(vp)
584
585extern int vn_open(char *path, int x1, int oflags, int mode, vnode_t **vpp,
586 int x2, int x3);
587extern int vn_openat(char *path, int x1, int oflags, int mode, vnode_t **vpp,
588 int x2, int x3, vnode_t *vp, int fd);
589extern int vn_rdwr(int uio, vnode_t *vp, void *addr, ssize_t len,
590 offset_t offset, int x1, int x2, rlim64_t x3, void *x4, ssize_t *residp);
591extern void vn_close(vnode_t *vp);
592
593#define vn_remove(path, x1, x2) remove(path)
594#define vn_rename(from, to, seg) rename((from), (to))
595#define vn_is_readonly(vp) B_FALSE
596
597extern vnode_t *rootdir;
598
599#include <sys/file.h> /* for FREAD, FWRITE, etc */
600
601/*
602 * Random stuff
603 */
604#define ddi_get_lbolt() (gethrtime() >> 23)
605#define ddi_get_lbolt64() (gethrtime() >> 23)
606#define hz 119 /* frequency when using gethrtime() >> 23 for lbolt */
607
608#define ddi_time_before(a, b) (a < b)
609#define ddi_time_after(a, b) ddi_time_before(b, a)
610#define ddi_time_before_eq(a, b) (!ddi_time_after(a, b))
611#define ddi_time_after_eq(a, b) ddi_time_before_eq(b, a)
612
613#define ddi_time_before64(a, b) (a < b)
614#define ddi_time_after64(a, b) ddi_time_before64(b, a)
615#define ddi_time_before_eq64(a, b) (!ddi_time_after64(a, b))
616#define ddi_time_after_eq64(a, b) ddi_time_before_eq64(b, a)
617
618extern void delay(clock_t ticks);
619
620#define SEC_TO_TICK(sec) ((sec) * hz)
621#define MSEC_TO_TICK(msec) ((msec) / (MILLISEC / hz))
622#define USEC_TO_TICK(usec) ((usec) / (MICROSEC / hz))
623#define NSEC_TO_TICK(usec) ((usec) / (NANOSEC / hz))
624
625#define gethrestime_sec() time(NULL)
626#define gethrestime(t) \
627 do {\
628 (t)->tv_sec = gethrestime_sec();\
629 (t)->tv_nsec = 0;\
630 } while (0);
631
632#define max_ncpus 64
633#define boot_ncpus (sysconf(_SC_NPROCESSORS_ONLN))
634
635/*
636 * Process priorities as defined by setpriority(2) and getpriority(2).
637 */
638#define minclsyspri 19
639#define maxclsyspri -20
640#define defclsyspri 0
641
642#define CPU_SEQID ((uintptr_t)pthread_self() & (max_ncpus - 1))
643
644#define kcred NULL
645#define CRED() NULL
646
647#define ptob(x) ((x) * PAGESIZE)
648
649extern uint64_t physmem;
650
651extern int highbit64(uint64_t i);
652extern int lowbit64(uint64_t i);
653extern int random_get_bytes(uint8_t *ptr, size_t len);
654extern int random_get_pseudo_bytes(uint8_t *ptr, size_t len);
655
656extern void kernel_init(int);
657extern void kernel_fini(void);
658extern void thread_init(void);
659extern void thread_fini(void);
660
661struct spa;
662extern void nicenum(uint64_t num, char *buf);
663extern void show_pool_stats(struct spa *);
664
665typedef struct callb_cpr {
666 kmutex_t *cc_lockp;
667} callb_cpr_t;
668
669#define CALLB_CPR_INIT(cp, lockp, func, name) { \
670 (cp)->cc_lockp = lockp; \
671}
672
673#define CALLB_CPR_SAFE_BEGIN(cp) { \
674 ASSERT(MUTEX_HELD((cp)->cc_lockp)); \
675}
676
677#define CALLB_CPR_SAFE_END(cp, lockp) { \
678 ASSERT(MUTEX_HELD((cp)->cc_lockp)); \
679}
680
681#define CALLB_CPR_EXIT(cp) { \
682 ASSERT(MUTEX_HELD((cp)->cc_lockp)); \
683 mutex_exit((cp)->cc_lockp); \
684}
685
686#define zone_dataset_visible(x, y) (1)
687#define INGLOBALZONE(z) (1)
688
689extern char *kmem_vasprintf(const char *fmt, va_list adx);
690extern char *kmem_asprintf(const char *fmt, ...);
691#define strfree(str) kmem_free((str), strlen(str) + 1)
692
693/*
694 * Hostname information
695 */
696extern char hw_serial[]; /* for userland-emulated hostid access */
697extern int ddi_strtoul(const char *str, char **nptr, int base,
698 unsigned long *result);
699
700extern int ddi_strtoull(const char *str, char **nptr, int base,
701 u_longlong_t *result);
702
703typedef struct utsname utsname_t;
704extern utsname_t *utsname(void);
705
706/* ZFS Boot Related stuff. */
707
708struct _buf {
709 intptr_t _fd;
710};
711
712struct bootstat {
713 uint64_t st_size;
714};
715
716typedef struct ace_object {
717 uid_t a_who;
718 uint32_t a_access_mask;
719 uint16_t a_flags;
720 uint16_t a_type;
721 uint8_t a_obj_type[16];
722 uint8_t a_inherit_obj_type[16];
723} ace_object_t;
724
725
726#define ACE_ACCESS_ALLOWED_OBJECT_ACE_TYPE 0x05
727#define ACE_ACCESS_DENIED_OBJECT_ACE_TYPE 0x06
728#define ACE_SYSTEM_AUDIT_OBJECT_ACE_TYPE 0x07
729#define ACE_SYSTEM_ALARM_OBJECT_ACE_TYPE 0x08
730
731extern struct _buf *kobj_open_file(char *name);
732extern int kobj_read_file(struct _buf *file, char *buf, unsigned size,
733 unsigned off);
734extern void kobj_close_file(struct _buf *file);
735extern int kobj_get_filesize(struct _buf *file, uint64_t *size);
736extern int zfs_secpolicy_snapshot_perms(const char *name, cred_t *cr);
737extern int zfs_secpolicy_rename_perms(const char *from, const char *to,
738 cred_t *cr);
739extern int zfs_secpolicy_destroy_perms(const char *name, cred_t *cr);
740extern zoneid_t getzoneid(void);
741
742/* SID stuff */
743typedef struct ksiddomain {
744 uint_t kd_ref;
745 uint_t kd_len;
746 char *kd_name;
747} ksiddomain_t;
748
749ksiddomain_t *ksid_lookupdomain(const char *);
750void ksiddomain_rele(ksiddomain_t *);
751
752#define DDI_SLEEP KM_SLEEP
753#define ddi_log_sysevent(_a, _b, _c, _d, _e, _f, _g) \
754 sysevent_post_event(_c, _d, _b, "libzpool", _e, _f)
755
756#define zfs_sleep_until(wakeup) \
757 do { \
758 hrtime_t delta = wakeup - gethrtime(); \
759 struct timespec ts; \
760 ts.tv_sec = delta / NANOSEC; \
761 ts.tv_nsec = delta % NANOSEC; \
762 (void) nanosleep(&ts, NULL); \
763 } while (0)
764
765typedef int fstrans_cookie_t;
766
767extern fstrans_cookie_t spl_fstrans_mark(void);
768extern void spl_fstrans_unmark(fstrans_cookie_t);
769extern int spl_fstrans_check(void);
770
771#endif /* _KERNEL */
772#endif /* _SYS_ZFS_CONTEXT_H */
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