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 (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
23 * Copyright 2011 Nexenta Systems, Inc. All rights reserved.
24 * Copyright (c) 2012, 2016 by Delphix. All rights reserved.
25 * Copyright (c) 2012, Joyent, Inc. All rights reserved.
26 */
27
28 #ifndef _SYS_ZFS_CONTEXT_H
29 #define _SYS_ZFS_CONTEXT_H
30
31 #ifdef __cplusplus
32 extern "C" {
33 #endif
34
35 #define _SYS_MUTEX_H
36 #define _SYS_RWLOCK_H
37 #define _SYS_CONDVAR_H
38 #define _SYS_SYSTM_H
39 #define _SYS_T_LOCK_H
40 #define _SYS_VNODE_H
41 #define _SYS_VFS_H
42 #define _SYS_SUNDDI_H
43 #define _SYS_CALLB_H
44
45 #include <stdio.h>
46 #include <stdlib.h>
47 #include <stddef.h>
48 #include <stdarg.h>
49 #include <fcntl.h>
50 #include <unistd.h>
51 #include <errno.h>
52 #include <string.h>
53 #include <strings.h>
54 #include <synch.h>
55 #include <thread.h>
56 #include <assert.h>
57 #include <alloca.h>
58 #include <umem.h>
59 #include <limits.h>
60 #include <atomic.h>
61 #include <dirent.h>
62 #include <time.h>
63 #include <procfs.h>
64 #include <pthread.h>
65 #include <setjmp.h>
66 #include <sys/debug.h>
67 #include <libsysevent.h>
68 #include <sys/note.h>
69 #include <sys/types.h>
70 #include <sys/cred.h>
71 #include <sys/sysmacros.h>
72 #include <sys/bitmap.h>
73 #include <sys/resource.h>
74 #include <sys/byteorder.h>
75 #include <sys/list.h>
76 #include <sys/uio.h>
77 #include <sys/zfs_debug.h>
78 #include <sys/sdt.h>
79 #include <sys/kstat.h>
80 #include <sys/u8_textprep.h>
81 #include <sys/sysevent/eventdefs.h>
82 #include <sys/sysevent/dev.h>
83 #include <sys/sunddi.h>
84 #include <sys/debug.h>
85 #include "zfs.h"
86
87 /*
88 * Debugging
89 */
90
91 /*
92 * Note that we are not using the debugging levels.
93 */
94
95 #define CE_CONT 0 /* continuation */
96 #define CE_NOTE 1 /* notice */
97 #define CE_WARN 2 /* warning */
98 #define CE_PANIC 3 /* panic */
99 #define CE_IGNORE 4 /* print nothing */
100
101 /*
102 * ZFS debugging
103 */
104
105 #ifdef ZFS_DEBUG
106 extern void dprintf_setup(int *argc, char **argv);
107 #endif /* ZFS_DEBUG */
108
109 extern void cmn_err(int, const char *, ...);
110 extern void vcmn_err(int, const char *, __va_list);
111 extern void panic(const char *, ...) __NORETURN;
112 extern void vpanic(const char *, __va_list) __NORETURN;
113
114 #define fm_panic panic
115
116 extern int aok;
117
118 /*
119 * DTrace SDT probes have different signatures in userland than they do in
120 * the kernel. If they're being used in kernel code, re-define them out of
121 * existence for their counterparts in libzpool.
122 *
123 * Here's an example of how to use the set-error probes in userland:
124 * zfs$target:::set-error /arg0 == EBUSY/ {stack();}
125 *
126 * Here's an example of how to use DTRACE_PROBE probes in userland:
127 * If there is a probe declared as follows:
128 * DTRACE_PROBE2(zfs__probe_name, uint64_t, blkid, dnode_t *, dn);
129 * Then you can use it as follows:
130 * zfs$target:::probe2 /copyinstr(arg0) == "zfs__probe_name"/
131 * {printf("%u %p\n", arg1, arg2);}
132 */
133
134 #ifdef DTRACE_PROBE
135 #undef DTRACE_PROBE
136 #endif /* DTRACE_PROBE */
137 #define DTRACE_PROBE(a) \
138 ZFS_PROBE0(#a)
139
140 #ifdef DTRACE_PROBE1
141 #undef DTRACE_PROBE1
142 #endif /* DTRACE_PROBE1 */
143 #define DTRACE_PROBE1(a, b, c) \
144 ZFS_PROBE1(#a, (unsigned long)c)
145
146 #ifdef DTRACE_PROBE2
147 #undef DTRACE_PROBE2
148 #endif /* DTRACE_PROBE2 */
149 #define DTRACE_PROBE2(a, b, c, d, e) \
150 ZFS_PROBE2(#a, (unsigned long)c, (unsigned long)e)
151
152 #ifdef DTRACE_PROBE3
153 #undef DTRACE_PROBE3
154 #endif /* DTRACE_PROBE3 */
155 #define DTRACE_PROBE3(a, b, c, d, e, f, g) \
156 ZFS_PROBE3(#a, (unsigned long)c, (unsigned long)e, (unsigned long)g)
157
158 #ifdef DTRACE_PROBE4
159 #undef DTRACE_PROBE4
160 #endif /* DTRACE_PROBE4 */
161 #define DTRACE_PROBE4(a, b, c, d, e, f, g, h, i) \
162 ZFS_PROBE4(#a, (unsigned long)c, (unsigned long)e, (unsigned long)g, \
163 (unsigned long)i)
164
165 /*
166 * We use the comma operator so that this macro can be used without much
167 * additional code. For example, "return (EINVAL);" becomes
168 * "return (SET_ERROR(EINVAL));". Note that the argument will be evaluated
169 * twice, so it should not have side effects (e.g. something like:
170 * "return (SET_ERROR(log_error(EINVAL, info)));" would log the error twice).
171 */
172 #define SET_ERROR(err) (ZFS_SET_ERROR(err), err)
173
174 /*
175 * Threads
176 */
177 #define curthread ((void *)(uintptr_t)thr_self())
178
179 #define kpreempt(x) yield()
180
181 typedef struct kthread kthread_t;
182
183 #define thread_create(stk, stksize, func, arg, len, pp, state, pri) \
184 zk_thread_create(func, arg, len)
185 #define thread_exit() thr_exit(NULL)
186 #define thread_join(t) panic("libzpool cannot join threads")
187
188 #define newproc(f, a, cid, pri, ctp, pid) (ENOSYS)
189
190 /* in libzpool, p0 exists only to have its address taken */
191 struct proc {
192 uintptr_t this_is_never_used_dont_dereference_it;
193 };
194
195 extern struct proc p0;
196 #define curproc (&p0)
197
198 #define PS_NONE -1
199
200 extern kthread_t *zk_thread_create(void (*func)(void*), void *arg,
201 uint64_t len);
202
203 #define issig(why) (FALSE)
204 #define ISSIG(thr, why) (FALSE)
205
206 /*
207 * Mutexes
208 */
209 typedef struct kmutex {
210 void *m_owner;
211 boolean_t initialized;
212 mutex_t m_lock;
213 } kmutex_t;
214
215 #define MUTEX_DEFAULT USYNC_THREAD
216 #undef MUTEX_HELD
217 #undef MUTEX_NOT_HELD
218 #define MUTEX_HELD(m) _mutex_held(&(m)->m_lock)
219 #define MUTEX_NOT_HELD(m) (!MUTEX_HELD(m))
220
221 /*
222 * Argh -- we have to get cheesy here because the kernel and userland
223 * have different signatures for the same routine.
224 */
225 extern int _mutex_init(mutex_t *mp, int type, void *arg);
226 extern int _mutex_destroy(mutex_t *mp);
227
228 #define mutex_init(mp, b, c, d) zmutex_init((kmutex_t *)(mp))
229 #define mutex_destroy(mp) zmutex_destroy((kmutex_t *)(mp))
230 #define mutex_enter(mp) zmutex_enter(mp)
231 #define mutex_exit(mp) zmutex_exit(mp)
232
233 extern void zmutex_init(kmutex_t *mp);
234 extern void zmutex_destroy(kmutex_t *mp);
235 extern void zmutex_enter(kmutex_t *mp);
236 extern void zmutex_exit(kmutex_t *mp);
237 extern int mutex_tryenter(kmutex_t *mp);
238 extern void *mutex_owner(kmutex_t *mp);
239
240 /*
241 * RW locks
242 */
243 typedef struct krwlock {
244 void *rw_owner;
245 boolean_t initialized;
246 rwlock_t rw_lock;
247 } krwlock_t;
248
249 typedef int krw_t;
250
251 #define RW_READER 0
252 #define RW_WRITER 1
253 #define RW_DEFAULT USYNC_THREAD
254
255 #undef RW_READ_HELD
256 #define RW_READ_HELD(x) _rw_read_held(&(x)->rw_lock)
257
258 #undef RW_WRITE_HELD
259 #define RW_WRITE_HELD(x) _rw_write_held(&(x)->rw_lock)
260
261 #undef RW_LOCK_HELD
262 #define RW_LOCK_HELD(x) (RW_READ_HELD(x) || RW_WRITE_HELD(x))
263
264 extern void rw_init(krwlock_t *rwlp, char *name, int type, void *arg);
265 extern void rw_destroy(krwlock_t *rwlp);
266 extern void rw_enter(krwlock_t *rwlp, krw_t rw);
267 extern int rw_tryenter(krwlock_t *rwlp, krw_t rw);
268 extern int rw_tryupgrade(krwlock_t *rwlp);
269 extern void rw_exit(krwlock_t *rwlp);
270 #define rw_downgrade(rwlp) do { } while (0)
271
272 extern uid_t crgetuid(cred_t *cr);
273 extern uid_t crgetruid(cred_t *cr);
274 extern gid_t crgetgid(cred_t *cr);
275 extern int crgetngroups(cred_t *cr);
276 extern gid_t *crgetgroups(cred_t *cr);
277
278 /*
279 * Condition variables
280 */
281 typedef cond_t kcondvar_t;
282
283 #define CV_DEFAULT USYNC_THREAD
284 #define CALLOUT_FLAG_ABSOLUTE 0x2
285
286 extern void cv_init(kcondvar_t *cv, char *name, int type, void *arg);
287 extern void cv_destroy(kcondvar_t *cv);
288 extern void cv_wait(kcondvar_t *cv, kmutex_t *mp);
289 extern clock_t cv_timedwait(kcondvar_t *cv, kmutex_t *mp, clock_t abstime);
290 extern clock_t cv_timedwait_hires(kcondvar_t *cvp, kmutex_t *mp, hrtime_t tim,
291 hrtime_t res, int flag);
292 extern void cv_signal(kcondvar_t *cv);
293 extern void cv_broadcast(kcondvar_t *cv);
294
295 /*
296 * Thread-specific data
297 */
298 #define tsd_get(k) pthread_getspecific(k)
299 #define tsd_set(k, v) pthread_setspecific(k, v)
300 #define tsd_create(kp, d) pthread_key_create(kp, d)
301 #define tsd_destroy(kp) /* nothing */
302
303 /*
304 * kstat creation, installation and deletion
305 */
306 extern kstat_t *kstat_create(const char *, int,
307 const char *, const char *, uchar_t, ulong_t, uchar_t);
308 extern void kstat_named_init(kstat_named_t *, const char *, uchar_t);
309 extern void kstat_install(kstat_t *);
310 extern void kstat_delete(kstat_t *);
311 extern void kstat_waitq_enter(kstat_io_t *);
312 extern void kstat_waitq_exit(kstat_io_t *);
313 extern void kstat_runq_enter(kstat_io_t *);
314 extern void kstat_runq_exit(kstat_io_t *);
315 extern void kstat_waitq_to_runq(kstat_io_t *);
316 extern void kstat_runq_back_to_waitq(kstat_io_t *);
317
318 /*
319 * Kernel memory
320 */
321 #define KM_SLEEP UMEM_NOFAIL
322 #define KM_PUSHPAGE KM_SLEEP
323 #define KM_NOSLEEP UMEM_DEFAULT
324 #define KM_NORMALPRI 0 /* not needed with UMEM_DEFAULT */
325 #define KMC_NODEBUG UMC_NODEBUG
326 #define KMC_NOTOUCH 0 /* not needed for userland caches */
327 #define kmem_alloc(_s, _f) umem_alloc(_s, _f)
328 #define kmem_zalloc(_s, _f) umem_zalloc(_s, _f)
329 #define kmem_free(_b, _s) umem_free(_b, _s)
330 #define kmem_cache_create(_a, _b, _c, _d, _e, _f, _g, _h, _i) \
331 umem_cache_create(_a, _b, _c, _d, _e, _f, _g, _h, _i)
332 #define kmem_cache_destroy(_c) umem_cache_destroy(_c)
333 #define kmem_cache_alloc(_c, _f) umem_cache_alloc(_c, _f)
334 #define kmem_cache_free(_c, _b) umem_cache_free(_c, _b)
335 #define kmem_debugging() 0
336 #define kmem_cache_reap_now(_c) /* nothing */
337 #define kmem_cache_set_move(_c, _cb) /* nothing */
338 #define vmem_qcache_reap(_v) /* nothing */
339 #define POINTER_INVALIDATE(_pp) /* nothing */
340 #define POINTER_IS_VALID(_p) 0
341
342 extern vmem_t *zio_arena;
343
344 typedef umem_cache_t kmem_cache_t;
345
346 typedef enum kmem_cbrc {
347 KMEM_CBRC_YES,
348 KMEM_CBRC_NO,
349 KMEM_CBRC_LATER,
350 KMEM_CBRC_DONT_NEED,
351 KMEM_CBRC_DONT_KNOW
352 } kmem_cbrc_t;
353
354 /*
355 * Task queues
356 */
357 typedef struct taskq taskq_t;
358 typedef uintptr_t taskqid_t;
359 typedef void (task_func_t)(void *);
360
361 typedef struct taskq_ent {
362 struct taskq_ent *tqent_next;
363 struct taskq_ent *tqent_prev;
364 task_func_t *tqent_func;
365 void *tqent_arg;
366 uintptr_t tqent_flags;
367 } taskq_ent_t;
368
369 #define TQENT_FLAG_PREALLOC 0x1 /* taskq_dispatch_ent used */
370
371 #define TASKQ_PREPOPULATE 0x0001
372 #define TASKQ_CPR_SAFE 0x0002 /* Use CPR safe protocol */
373 #define TASKQ_DYNAMIC 0x0004 /* Use dynamic thread scheduling */
374 #define TASKQ_THREADS_CPU_PCT 0x0008 /* Scale # threads by # cpus */
375 #define TASKQ_DC_BATCH 0x0010 /* Mark threads as batch */
376
377 #define TQ_SLEEP KM_SLEEP /* Can block for memory */
378 #define TQ_NOSLEEP KM_NOSLEEP /* cannot block for memory; may fail */
379 #define TQ_NOQUEUE 0x02 /* Do not enqueue if can't dispatch */
380 #define TQ_FRONT 0x08 /* Queue in front */
381
382
383 extern taskq_t *system_taskq;
384
385 extern taskq_t *taskq_create(const char *, int, pri_t, int, int, uint_t);
386 #define taskq_create_proc(a, b, c, d, e, p, f) \
387 (taskq_create(a, b, c, d, e, f))
388 #define taskq_create_sysdc(a, b, d, e, p, dc, f) \
389 (taskq_create(a, b, maxclsyspri, d, e, f))
390 extern taskqid_t taskq_dispatch(taskq_t *, task_func_t, void *, uint_t);
391 extern void taskq_dispatch_ent(taskq_t *, task_func_t, void *, uint_t,
392 taskq_ent_t *);
393 extern void taskq_destroy(taskq_t *);
394 extern void taskq_wait(taskq_t *);
395 extern int taskq_member(taskq_t *, void *);
396 extern void system_taskq_init(void);
397 extern void system_taskq_fini(void);
398
399 #define XVA_MAPSIZE 3
400 #define XVA_MAGIC 0x78766174
401
402 /*
403 * vnodes
404 */
405 typedef struct vnode {
406 uint64_t v_size;
407 int v_fd;
408 char *v_path;
409 int v_dump_fd;
410 } vnode_t;
411
412 extern char *vn_dumpdir;
413 #define AV_SCANSTAMP_SZ 32 /* length of anti-virus scanstamp */
414
415 typedef struct xoptattr {
416 timestruc_t xoa_createtime; /* Create time of file */
417 uint8_t xoa_archive;
418 uint8_t xoa_system;
419 uint8_t xoa_readonly;
420 uint8_t xoa_hidden;
421 uint8_t xoa_nounlink;
422 uint8_t xoa_immutable;
423 uint8_t xoa_appendonly;
424 uint8_t xoa_nodump;
425 uint8_t xoa_settable;
426 uint8_t xoa_opaque;
427 uint8_t xoa_av_quarantined;
428 uint8_t xoa_av_modified;
429 uint8_t xoa_av_scanstamp[AV_SCANSTAMP_SZ];
430 uint8_t xoa_reparse;
431 uint8_t xoa_offline;
432 uint8_t xoa_sparse;
433 } xoptattr_t;
434
435 typedef struct vattr {
436 uint_t va_mask; /* bit-mask of attributes */
437 u_offset_t va_size; /* file size in bytes */
438 } vattr_t;
439
440
441 typedef struct xvattr {
442 vattr_t xva_vattr; /* Embedded vattr structure */
443 uint32_t xva_magic; /* Magic Number */
444 uint32_t xva_mapsize; /* Size of attr bitmap (32-bit words) */
445 uint32_t *xva_rtnattrmapp; /* Ptr to xva_rtnattrmap[] */
446 uint32_t xva_reqattrmap[XVA_MAPSIZE]; /* Requested attrs */
447 uint32_t xva_rtnattrmap[XVA_MAPSIZE]; /* Returned attrs */
448 xoptattr_t xva_xoptattrs; /* Optional attributes */
449 } xvattr_t;
450
451 typedef struct vsecattr {
452 uint_t vsa_mask; /* See below */
453 int vsa_aclcnt; /* ACL entry count */
454 void *vsa_aclentp; /* pointer to ACL entries */
455 int vsa_dfaclcnt; /* default ACL entry count */
456 void *vsa_dfaclentp; /* pointer to default ACL entries */
457 size_t vsa_aclentsz; /* ACE size in bytes of vsa_aclentp */
458 } vsecattr_t;
459
460 #define AT_TYPE 0x00001
461 #define AT_MODE 0x00002
462 #define AT_UID 0x00004
463 #define AT_GID 0x00008
464 #define AT_FSID 0x00010
465 #define AT_NODEID 0x00020
466 #define AT_NLINK 0x00040
467 #define AT_SIZE 0x00080
468 #define AT_ATIME 0x00100
469 #define AT_MTIME 0x00200
470 #define AT_CTIME 0x00400
471 #define AT_RDEV 0x00800
472 #define AT_BLKSIZE 0x01000
473 #define AT_NBLOCKS 0x02000
474 #define AT_SEQ 0x08000
475 #define AT_XVATTR 0x10000
476
477 #define CRCREAT 0
478
479 extern int fop_getattr(vnode_t *vp, vattr_t *vap);
480
481 #define VOP_CLOSE(vp, f, c, o, cr, ct) 0
482 #define VOP_PUTPAGE(vp, of, sz, fl, cr, ct) 0
483 #define VOP_GETATTR(vp, vap, fl, cr, ct) fop_getattr((vp), (vap));
484
485 #define VOP_FSYNC(vp, f, cr, ct) fsync((vp)->v_fd)
486
487 #define VN_RELE(vp) vn_close(vp)
488
489 extern int vn_open(char *path, int x1, int oflags, int mode, vnode_t **vpp,
490 int x2, int x3);
491 extern int vn_openat(char *path, int x1, int oflags, int mode, vnode_t **vpp,
492 int x2, int x3, vnode_t *vp, int fd);
493 extern int vn_rdwr(int uio, vnode_t *vp, void *addr, ssize_t len,
494 offset_t offset, int x1, int x2, rlim64_t x3, void *x4, ssize_t *residp);
495 extern void vn_close(vnode_t *vp);
496
497 #define vn_remove(path, x1, x2) remove(path)
498 #define vn_rename(from, to, seg) rename((from), (to))
499 #define vn_is_readonly(vp) B_FALSE
500
501 extern vnode_t *rootdir;
502
503 #include <sys/file.h> /* for FREAD, FWRITE, etc */
504
505 /*
506 * Random stuff
507 */
508 #define ddi_get_lbolt() (gethrtime() >> 23)
509 #define ddi_get_lbolt64() (gethrtime() >> 23)
510 #define hz 119 /* frequency when using gethrtime() >> 23 for lbolt */
511
512 extern void delay(clock_t ticks);
513
514 #define SEC_TO_TICK(sec) ((sec) * hz)
515 #define NSEC_TO_TICK(usec) ((usec) / (NANOSEC / hz))
516
517 #define gethrestime_sec() time(NULL)
518 #define gethrestime(t) \
519 do {\
520 (t)->tv_sec = gethrestime_sec();\
521 (t)->tv_nsec = 0;\
522 } while (0);
523
524 #define max_ncpus 64
525 #define boot_ncpus (sysconf(_SC_NPROCESSORS_ONLN))
526
527 #define minclsyspri 60
528 #define maxclsyspri 99
529
530 #define CPU_SEQID (thr_self() & (max_ncpus - 1))
531
532 #define kcred NULL
533 #define CRED() NULL
534
535 #define ptob(x) ((x) * PAGESIZE)
536
537 extern uint64_t physmem;
538
539 extern int highbit64(uint64_t i);
540 extern int random_get_bytes(uint8_t *ptr, size_t len);
541 extern int random_get_pseudo_bytes(uint8_t *ptr, size_t len);
542
543 extern void kernel_init(int);
544 extern void kernel_fini(void);
545
546 struct spa;
547 extern void nicenum(uint64_t num, char *buf, size_t);
548 extern void show_pool_stats(struct spa *);
549 extern int set_global_var(char *arg);
550
551 typedef struct callb_cpr {
552 kmutex_t *cc_lockp;
553 } callb_cpr_t;
554
555 #define CALLB_CPR_INIT(cp, lockp, func, name) { \
556 (cp)->cc_lockp = lockp; \
557 }
558
559 #define CALLB_CPR_SAFE_BEGIN(cp) { \
560 ASSERT(MUTEX_HELD((cp)->cc_lockp)); \
561 }
562
563 #define CALLB_CPR_SAFE_END(cp, lockp) { \
564 ASSERT(MUTEX_HELD((cp)->cc_lockp)); \
565 }
566
567 #define CALLB_CPR_EXIT(cp) { \
568 ASSERT(MUTEX_HELD((cp)->cc_lockp)); \
569 mutex_exit((cp)->cc_lockp); \
570 }
571
572 #define zone_dataset_visible(x, y) (1)
573 #define INGLOBALZONE(z) (1)
574
575 extern char *kmem_asprintf(const char *fmt, ...);
576 #define strfree(str) kmem_free((str), strlen(str) + 1)
577
578 /*
579 * Hostname information
580 */
581 extern char hw_serial[]; /* for userland-emulated hostid access */
582 extern int ddi_strtoul(const char *str, char **nptr, int base,
583 unsigned long *result);
584
585 extern int ddi_strtoull(const char *str, char **nptr, int base,
586 u_longlong_t *result);
587
588 /* ZFS Boot Related stuff. */
589
590 struct _buf {
591 intptr_t _fd;
592 };
593
594 struct bootstat {
595 uint64_t st_size;
596 };
597
598 typedef struct ace_object {
599 uid_t a_who;
600 uint32_t a_access_mask;
601 uint16_t a_flags;
602 uint16_t a_type;
603 uint8_t a_obj_type[16];
604 uint8_t a_inherit_obj_type[16];
605 } ace_object_t;
606
607
608 #define ACE_ACCESS_ALLOWED_OBJECT_ACE_TYPE 0x05
609 #define ACE_ACCESS_DENIED_OBJECT_ACE_TYPE 0x06
610 #define ACE_SYSTEM_AUDIT_OBJECT_ACE_TYPE 0x07
611 #define ACE_SYSTEM_ALARM_OBJECT_ACE_TYPE 0x08
612
613 extern struct _buf *kobj_open_file(char *name);
614 extern int kobj_read_file(struct _buf *file, char *buf, unsigned size,
615 unsigned off);
616 extern void kobj_close_file(struct _buf *file);
617 extern int kobj_get_filesize(struct _buf *file, uint64_t *size);
618 extern int zfs_secpolicy_snapshot_perms(const char *name, cred_t *cr);
619 extern int zfs_secpolicy_rename_perms(const char *from, const char *to,
620 cred_t *cr);
621 extern int zfs_secpolicy_destroy_perms(const char *name, cred_t *cr);
622 extern zoneid_t getzoneid(void);
623
624 /* SID stuff */
625 typedef struct ksiddomain {
626 uint_t kd_ref;
627 uint_t kd_len;
628 char *kd_name;
629 } ksiddomain_t;
630
631 ksiddomain_t *ksid_lookupdomain(const char *);
632 void ksiddomain_rele(ksiddomain_t *);
633
634 #define DDI_SLEEP KM_SLEEP
635 #define ddi_log_sysevent(_a, _b, _c, _d, _e, _f, _g) \
636 sysevent_post_event(_c, _d, _b, "libzpool", _e, _f)
637
638 /*
639 * Cyclic information
640 */
641 extern kmutex_t cpu_lock;
642
643 typedef uintptr_t cyclic_id_t;
644 typedef uint16_t cyc_level_t;
645 typedef void (*cyc_func_t)(void *);
646
647 #define CY_LOW_LEVEL 0
648 #define CY_INFINITY INT64_MAX
649 #define CYCLIC_NONE ((cyclic_id_t)0)
650
651 typedef struct cyc_time {
652 hrtime_t cyt_when;
653 hrtime_t cyt_interval;
654 } cyc_time_t;
655
656 typedef struct cyc_handler {
657 cyc_func_t cyh_func;
658 void *cyh_arg;
659 cyc_level_t cyh_level;
660 } cyc_handler_t;
661
662 extern cyclic_id_t cyclic_add(cyc_handler_t *, cyc_time_t *);
663 extern void cyclic_remove(cyclic_id_t);
664 extern int cyclic_reprogram(cyclic_id_t, hrtime_t);
665
666 /*
667 * Buf structure
668 */
669 #define B_BUSY 0x0001
670 #define B_DONE 0x0002
671 #define B_ERROR 0x0004
672 #define B_READ 0x0040 /* read when I/O occurs */
673 #define B_WRITE 0x0100 /* non-read pseudo-flag */
674
675 typedef struct buf {
676 int b_flags;
677 size_t b_bcount;
678 union {
679 caddr_t b_addr;
680 } b_un;
681
682 lldaddr_t _b_blkno;
683 #define b_lblkno _b_blkno._f
684 size_t b_resid;
685 size_t b_bufsize;
686 int (*b_iodone)(struct buf *);
687 int b_error;
688 void *b_private;
689 } buf_t;
690
691 extern void bioinit(buf_t *);
692 extern void biodone(buf_t *);
693 extern void bioerror(buf_t *, int);
694 extern int geterror(buf_t *);
695
696 #ifdef __cplusplus
697 }
698 #endif
699
700 #endif /* _SYS_ZFS_CONTEXT_H */