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