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 (c) 2012, 2015 by Delphix. All rights reserved. 24 * Copyright (c) 2012, Joyent, Inc. All rights reserved. 25 */ 26 /* 27 * Copyright 2011 Nexenta Systems, Inc. All rights reserved. 28 */ 29 30 #ifndef _SYS_ZFS_CONTEXT_H 31 #define _SYS_ZFS_CONTEXT_H 32 33 #ifdef __cplusplus 34 extern "C" { 35 #endif 36 37 #define _SYS_MUTEX_H 38 #define _SYS_RWLOCK_H 39 #define _SYS_CONDVAR_H 40 #define _SYS_SYSTM_H 41 #define _SYS_T_LOCK_H 42 #define _SYS_VNODE_H 43 #define _SYS_VFS_H 44 #define _SYS_SUNDDI_H 45 #define _SYS_CALLB_H 46 #ifndef __NetBSD__ 47 #define _SYS_SCHED_H_ 48 #else 49 #define _SYS_CONDVAR_H_ 50 #define _SYS_MUTEX_H_ 51 #define _SYS_RWLOCK_H_ 52 #endif 53 54 #include <solaris.h> 55 #include <stdio.h> 56 #include <stdlib.h> 57 #include <stddef.h> 58 #include <stdarg.h> 59 #include <fcntl.h> 60 #include <unistd.h> 61 #include <errno.h> 62 #include <string.h> 63 #include <strings.h> 64 #include <thread.h> 65 #include <assert.h> 66 #include <limits.h> 67 #include <dirent.h> 68 #include <time.h> 69 #include <math.h> 70 #include <umem.h> 71 #include <inttypes.h> 72 #include <fsshare.h> 73 #include <pthread.h> 74 #include <sched.h> 75 #include <sys/debug.h> 76 #include <sys/note.h> 77 #include <sys/types.h> 78 #include <sys/cred.h> 79 #include <sys/atomic.h> 80 #include <sys/sysmacros.h> 81 #include <sys/bitmap.h> 82 #include <sys/resource.h> 83 #include <sys/byteorder.h> 84 #include <sys/list.h> 85 #include <sys/time.h> 86 #include <sys/uio.h> 87 #include <sys/mntent.h> 88 #include <sys/mnttab.h> 89 #include <sys/zfs_debug.h> 90 #include <sys/sdt.h> 91 #include <sys/kstat.h> 92 #include <sys/u8_textprep.h> 93 #include <sys/kernel.h> 94 #include <sys/disk.h> 95 #include <sys/sysevent.h> 96 #include <sys/sysevent/eventdefs.h> 97 #include <sys/sysevent/dev.h> 98 #ifndef __NetBSD__ 99 #include <machine/atomic.h> 100 #else 101 #include <sys/atomic.h> 102 #endif 103 #include <sys/debug.h> 104 #ifdef illumos 105 #include "zfs.h" 106 #endif 107 108 #define ZFS_EXPORTS_PATH "/etc/zfs/exports" 109 110 /* 111 * Debugging 112 */ 113 114 /* 115 * Note that we are not using the debugging levels. 116 */ 117 118 #define CE_CONT 0 /* continuation */ 119 #define CE_NOTE 1 /* notice */ 120 #define CE_WARN 2 /* warning */ 121 #define CE_PANIC 3 /* panic */ 122 #define CE_IGNORE 4 /* print nothing */ 123 124 /* 125 * ZFS debugging 126 */ 127 128 #define ZFS_LOG(...) do { } while (0) 129 130 typedef u_longlong_t rlim64_t; 131 #define RLIM64_INFINITY ((rlim64_t)-3) 132 133 #ifdef ZFS_DEBUG 134 extern void dprintf_setup(int *argc, char **argv); 135 #endif /* ZFS_DEBUG */ 136 137 extern void cmn_err(int, const char *, ...); 138 extern void vcmn_err(int, const char *, __va_list); 139 extern void panic(const char *, ...); 140 extern void vpanic(const char *, __va_list); 141 142 #define fm_panic panic 143 144 extern int aok; 145 146 /* 147 * DTrace SDT probes have different signatures in userland than they do in 148 * the kernel. If they're being used in kernel code, re-define them out of 149 * existence for their counterparts in libzpool. 150 * 151 * Here's an example of how to use the set-error probes in userland: 152 * zfs$target:::set-error /arg0 == EBUSY/ {stack();} 153 * 154 * Here's an example of how to use DTRACE_PROBE probes in userland: 155 * If there is a probe declared as follows: 156 * DTRACE_PROBE2(zfs__probe_name, uint64_t, blkid, dnode_t *, dn); 157 * Then you can use it as follows: 158 * zfs$target:::probe2 /copyinstr(arg0) == "zfs__probe_name"/ 159 * {printf("%u %p\n", arg1, arg2);} 160 */ 161 162 #ifdef DTRACE_PROBE 163 #undef DTRACE_PROBE 164 #endif /* DTRACE_PROBE */ 165 #ifdef illumos 166 #define DTRACE_PROBE(a) \ 167 ZFS_PROBE0(#a) 168 #endif 169 170 #ifdef DTRACE_PROBE1 171 #undef DTRACE_PROBE1 172 #endif /* DTRACE_PROBE1 */ 173 #ifdef illumos 174 #define DTRACE_PROBE1(a, b, c) \ 175 ZFS_PROBE1(#a, (unsigned long)c) 176 #endif 177 178 #ifdef DTRACE_PROBE2 179 #undef DTRACE_PROBE2 180 #endif /* DTRACE_PROBE2 */ 181 #ifdef illumos 182 #define DTRACE_PROBE2(a, b, c, d, e) \ 183 ZFS_PROBE2(#a, (unsigned long)c, (unsigned long)e) 184 #endif 185 186 #ifdef DTRACE_PROBE3 187 #undef DTRACE_PROBE3 188 #endif /* DTRACE_PROBE3 */ 189 #ifdef illumos 190 #define DTRACE_PROBE3(a, b, c, d, e, f, g) \ 191 ZFS_PROBE3(#a, (unsigned long)c, (unsigned long)e, (unsigned long)g) 192 #endif 193 194 #ifdef DTRACE_PROBE4 195 #undef DTRACE_PROBE4 196 #endif /* DTRACE_PROBE4 */ 197 #ifdef illumos 198 #define DTRACE_PROBE4(a, b, c, d, e, f, g, h, i) \ 199 ZFS_PROBE4(#a, (unsigned long)c, (unsigned long)e, (unsigned long)g, \ 200 (unsigned long)i) 201 #endif 202 203 #ifdef illumos 204 /* 205 * We use the comma operator so that this macro can be used without much 206 * additional code. For example, "return (EINVAL);" becomes 207 * "return (SET_ERROR(EINVAL));". Note that the argument will be evaluated 208 * twice, so it should not have side effects (e.g. something like: 209 * "return (SET_ERROR(log_error(EINVAL, info)));" would log the error twice). 210 */ 211 #define SET_ERROR(err) (ZFS_SET_ERROR(err), err) 212 #else /* !illumos */ 213 214 #define DTRACE_PROBE(a) ((void)0) 215 #define DTRACE_PROBE1(a, b, c) ((void)0) 216 #define DTRACE_PROBE2(a, b, c, d, e) ((void)0) 217 #define DTRACE_PROBE3(a, b, c, d, e, f, g) ((void)0) 218 #define DTRACE_PROBE4(a, b, c, d, e, f, g, h, i) ((void)0) 219 220 #define SET_ERROR(err) (err) 221 #endif /* !illumos */ 222 223 /* 224 * Threads 225 */ 226 #define curthread ((void *)(uintptr_t)thr_self()) 227 228 #define kpreempt(x) sched_yield() 229 230 typedef struct kthread kthread_t; 231 232 #define thread_create(stk, stksize, func, arg, len, pp, state, pri) \ 233 zk_thread_create(func, arg) 234 #define thread_exit() thr_exit(NULL) 235 #define thread_join(t) panic("libzpool cannot join threads") 236 237 #define newproc(f, a, cid, pri, ctp, pid) (ENOSYS) 238 239 /* in libzpool, p0 exists only to have its address taken */ 240 struct proc { 241 uintptr_t this_is_never_used_dont_dereference_it; 242 }; 243 244 extern struct proc p0; 245 #define curproc (&p0) 246 247 #define PS_NONE -1 248 249 extern kthread_t *zk_thread_create(void (*func)(), void *arg); 250 251 #define issig(why) (FALSE) 252 #define ISSIG(thr, why) (FALSE) 253 254 /* 255 * Mutexes 256 */ 257 typedef struct kmutex { 258 void *m_owner; 259 boolean_t initialized; 260 mutex_t m_lock; 261 } kmutex_t; 262 263 #define MUTEX_DEFAULT USYNC_THREAD 264 #undef MUTEX_HELD 265 #undef MUTEX_NOT_HELD 266 #define MUTEX_HELD(m) ((m)->m_owner == curthread) 267 #define MUTEX_NOT_HELD(m) (!MUTEX_HELD(m)) 268 #define _mutex_held(m) pthread_mutex_isowned_np(m) 269 270 /* 271 * Argh -- we have to get cheesy here because the kernel and userland 272 * have different signatures for the same routine. 273 */ 274 //extern int _mutex_init(mutex_t *mp, int type, void *arg); 275 //extern int _mutex_destroy(mutex_t *mp); 276 //extern int _mutex_owned(mutex_t *mp); 277 278 #define mutex_init(mp, b, c, d) zmutex_init((kmutex_t *)(mp)) 279 #define mutex_destroy(mp) zmutex_destroy((kmutex_t *)(mp)) 280 #define mutex_owned(mp) zmutex_owned((kmutex_t *)(mp)) 281 282 extern void zmutex_init(kmutex_t *mp); 283 extern void zmutex_destroy(kmutex_t *mp); 284 extern int zmutex_owned(kmutex_t *mp); 285 extern void mutex_enter(kmutex_t *mp); 286 extern void mutex_exit(kmutex_t *mp); 287 extern int mutex_tryenter(kmutex_t *mp); 288 extern void *mutex_owner(kmutex_t *mp); 289 290 /* 291 * RW locks 292 */ 293 typedef struct krwlock { 294 int rw_count; 295 void *rw_owner; 296 boolean_t initialized; 297 rwlock_t rw_lock; 298 } krwlock_t; 299 300 typedef int krw_t; 301 302 #define RW_READER 0 303 #define RW_WRITER 1 304 #define RW_DEFAULT USYNC_THREAD 305 306 #undef RW_READ_HELD 307 #define RW_READ_HELD(x) ((x)->rw_owner == NULL && (x)->rw_count > 0) 308 309 #undef RW_WRITE_HELD 310 #define RW_WRITE_HELD(x) ((x)->rw_owner == curthread) 311 #define RW_LOCK_HELD(x) rw_lock_held(x) 312 313 #undef RW_LOCK_HELD 314 #define RW_LOCK_HELD(x) (RW_READ_HELD(x) || RW_WRITE_HELD(x)) 315 316 extern void rw_init(krwlock_t *rwlp, char *name, int type, void *arg); 317 extern void rw_destroy(krwlock_t *rwlp); 318 extern void rw_enter(krwlock_t *rwlp, krw_t rw); 319 extern int rw_tryenter(krwlock_t *rwlp, krw_t rw); 320 extern int rw_tryupgrade(krwlock_t *rwlp); 321 extern void rw_exit(krwlock_t *rwlp); 322 extern int rw_lock_held(krwlock_t *rwlp); 323 #define rw_downgrade(rwlp) do { } while (0) 324 325 extern uid_t crgetuid(cred_t *cr); 326 extern uid_t crgetruid(cred_t *cr); 327 extern gid_t crgetgid(cred_t *cr); 328 extern int crgetngroups(cred_t *cr); 329 extern gid_t *crgetgroups(cred_t *cr); 330 331 /* 332 * Condition variables 333 */ 334 typedef cond_t kcondvar_t; 335 336 #define CV_DEFAULT USYNC_THREAD 337 #define CALLOUT_FLAG_ABSOLUTE 0x2 338 339 extern void cv_init(kcondvar_t *cv, char *name, int type, void *arg); 340 extern void cv_destroy(kcondvar_t *cv); 341 extern void cv_wait(kcondvar_t *cv, kmutex_t *mp); 342 extern clock_t cv_timedwait(kcondvar_t *cv, kmutex_t *mp, clock_t abstime); 343 extern clock_t cv_timedwait_hires(kcondvar_t *cvp, kmutex_t *mp, hrtime_t tim, 344 hrtime_t res, int flag); 345 extern void cv_signal(kcondvar_t *cv); 346 extern void cv_broadcast(kcondvar_t *cv); 347 348 /* 349 * Thread-specific data 350 */ 351 #define tsd_get(k) pthread_getspecific(k) 352 #define tsd_set(k, v) pthread_setspecific(k, v) 353 #define tsd_create(kp, d) pthread_key_create(kp, d) 354 #define tsd_destroy(kp) /* nothing */ 355 356 /* 357 * Kernel memory 358 */ 359 #define KM_SLEEP UMEM_NOFAIL 360 #define KM_PUSHPAGE KM_SLEEP 361 #define KM_NOSLEEP UMEM_DEFAULT 362 #define KMC_NODEBUG UMC_NODEBUG 363 #define KMC_NOTOUCH 0 /* not needed for userland caches */ 364 #define KM_NODEBUG 0 365 #define kmem_alloc(_s, _f) umem_alloc(_s, _f) 366 #define kmem_zalloc(_s, _f) umem_zalloc(_s, _f) 367 #define kmem_free(_b, _s) umem_free(_b, _s) 368 #define kmem_size() (physmem * PAGESIZE) 369 #define kmem_cache_create(_a, _b, _c, _d, _e, _f, _g, _h, _i) \ 370 umem_cache_create(_a, _b, _c, _d, _e, _f, _g, _h, _i) 371 #define kmem_cache_destroy(_c) umem_cache_destroy(_c) 372 #define kmem_cache_alloc(_c, _f) umem_cache_alloc(_c, _f) 373 #define kmem_cache_free(_c, _b) umem_cache_free(_c, _b) 374 #define kmem_debugging() 0 375 #define kmem_cache_reap_now(_c) /* nothing */ 376 #define kmem_cache_set_move(_c, _cb) /* nothing */ 377 #define POINTER_INVALIDATE(_pp) /* nothing */ 378 #define POINTER_IS_VALID(_p) 0 379 380 typedef umem_cache_t kmem_cache_t; 381 382 typedef enum kmem_cbrc { 383 KMEM_CBRC_YES, 384 KMEM_CBRC_NO, 385 KMEM_CBRC_LATER, 386 KMEM_CBRC_DONT_NEED, 387 KMEM_CBRC_DONT_KNOW 388 } kmem_cbrc_t; 389 390 /* 391 * Task queues 392 */ 393 typedef struct taskq taskq_t; 394 typedef uintptr_t taskqid_t; 395 typedef void (task_func_t)(void *); 396 397 typedef struct taskq_ent { 398 struct taskq_ent *tqent_next; 399 struct taskq_ent *tqent_prev; 400 task_func_t *tqent_func; 401 void *tqent_arg; 402 uintptr_t tqent_flags; 403 } taskq_ent_t; 404 405 #define TQENT_FLAG_PREALLOC 0x1 /* taskq_dispatch_ent used */ 406 407 #define TASKQ_PREPOPULATE 0x0001 408 #define TASKQ_CPR_SAFE 0x0002 /* Use CPR safe protocol */ 409 #define TASKQ_DYNAMIC 0x0004 /* Use dynamic thread scheduling */ 410 #define TASKQ_THREADS_CPU_PCT 0x0008 /* Scale # threads by # cpus */ 411 #define TASKQ_DC_BATCH 0x0010 /* Mark threads as batch */ 412 413 #define TQ_SLEEP KM_SLEEP /* Can block for memory */ 414 #define TQ_NOSLEEP KM_NOSLEEP /* cannot block for memory; may fail */ 415 #define TQ_NOQUEUE 0x02 /* Do not enqueue if can't dispatch */ 416 #define TQ_FRONT 0x08 /* Queue in front */ 417 418 419 extern taskq_t *system_taskq; 420 421 extern taskq_t *taskq_create(const char *, int, pri_t, int, int, uint_t); 422 #define taskq_create_proc(a, b, c, d, e, p, f) \ 423 (taskq_create(a, b, c, d, e, f)) 424 #define taskq_create_sysdc(a, b, d, e, p, dc, f) \ 425 (taskq_create(a, b, maxclsyspri, d, e, f)) 426 extern taskqid_t taskq_dispatch(taskq_t *, task_func_t, void *, uint_t); 427 extern void taskq_dispatch_ent(taskq_t *, task_func_t, void *, uint_t, 428 taskq_ent_t *); 429 extern void taskq_destroy(taskq_t *); 430 extern void taskq_wait(taskq_t *); 431 extern int taskq_member(taskq_t *, void *); 432 extern void system_taskq_init(void); 433 extern void system_taskq_fini(void); 434 435 #define taskq_dispatch_safe(tq, func, arg, flags, task) \ 436 taskq_dispatch((tq), (func), (arg), (flags)) 437 438 #define XVA_MAPSIZE 3 439 #define XVA_MAGIC 0x78766174 440 441 /* 442 * vnodes 443 */ 444 typedef struct vnode { 445 uint64_t v_size; 446 int v_fd; 447 char *v_path; 448 int v_dump_fd; 449 } vnode_t; 450 451 extern char *vn_dumpdir; 452 #define AV_SCANSTAMP_SZ 32 /* length of anti-virus scanstamp */ 453 454 typedef struct xoptattr { 455 timestruc_t xoa_createtime; /* Create time of file */ 456 uint8_t xoa_archive; 457 uint8_t xoa_system; 458 uint8_t xoa_readonly; 459 uint8_t xoa_hidden; 460 uint8_t xoa_nounlink; 461 uint8_t xoa_immutable; 462 uint8_t xoa_appendonly; 463 uint8_t xoa_nodump; 464 uint8_t xoa_settable; 465 uint8_t xoa_opaque; 466 uint8_t xoa_av_quarantined; 467 uint8_t xoa_av_modified; 468 uint8_t xoa_av_scanstamp[AV_SCANSTAMP_SZ]; 469 uint8_t xoa_reparse; 470 uint8_t xoa_offline; 471 uint8_t xoa_sparse; 472 } xoptattr_t; 473 474 typedef struct vattr { 475 uint_t va_mask; /* bit-mask of attributes */ 476 u_offset_t va_size; /* file size in bytes */ 477 } vattr_t; 478 479 480 typedef struct xvattr { 481 vattr_t xva_vattr; /* Embedded vattr structure */ 482 uint32_t xva_magic; /* Magic Number */ 483 uint32_t xva_mapsize; /* Size of attr bitmap (32-bit words) */ 484 uint32_t *xva_rtnattrmapp; /* Ptr to xva_rtnattrmap[] */ 485 uint32_t xva_reqattrmap[XVA_MAPSIZE]; /* Requested attrs */ 486 uint32_t xva_rtnattrmap[XVA_MAPSIZE]; /* Returned attrs */ 487 xoptattr_t xva_xoptattrs; /* Optional attributes */ 488 } xvattr_t; 489 490 typedef struct vsecattr { 491 uint_t vsa_mask; /* See below */ 492 int vsa_aclcnt; /* ACL entry count */ 493 void *vsa_aclentp; /* pointer to ACL entries */ 494 int vsa_dfaclcnt; /* default ACL entry count */ 495 void *vsa_dfaclentp; /* pointer to default ACL entries */ 496 size_t vsa_aclentsz; /* ACE size in bytes of vsa_aclentp */ 497 } vsecattr_t; 498 499 #define AT_TYPE 0x00001 500 #define AT_MODE 0x00002 501 #define AT_UID 0x00004 502 #define AT_GID 0x00008 503 #define AT_FSID 0x00010 504 #define AT_NODEID 0x00020 505 #define AT_NLINK 0x00040 506 #define AT_SIZE 0x00080 507 #define AT_ATIME 0x00100 508 #define AT_MTIME 0x00200 509 #define AT_CTIME 0x00400 510 #define AT_RDEV 0x00800 511 #define AT_BLKSIZE 0x01000 512 #define AT_NBLOCKS 0x02000 513 #define AT_SEQ 0x08000 514 #define AT_XVATTR 0x10000 515 516 #define CRCREAT 0 517 518 extern int fop_getattr(vnode_t *vp, vattr_t *vap); 519 520 #define VOP_CLOSE(vp, f, c, o, cr, ct) 0 521 #define VOP_PUTPAGE(vp, of, sz, fl, cr, ct) 0 522 #ifndef __NetBSD__ 523 #define VOP_GETATTR(vp, vap, cr) fop_getattr((vp), (vap)); 524 #else 525 #define VOP_GETATTR(vp, vap, fl, cr, ct) fop_getattr((vp), (vap)); 526 #endif 527 528 #define VOP_FSYNC(vp, f, cr, ct) fsync((vp)->v_fd) 529 530 #define VN_RELE(vp) vn_close(vp, 0, NULL, NULL) 531 #define VN_RELE_ASYNC(vp, taskq) vn_close(vp, 0, NULL, NULL) 532 533 #define vn_lock(vp, type) 534 #define VOP_UNLOCK(vp, type) 535 536 extern int vn_open(char *path, int x1, int oflags, int mode, vnode_t **vpp, 537 int x2, int x3); 538 extern int vn_openat(char *path, int x1, int oflags, int mode, vnode_t **vpp, 539 int x2, int x3, vnode_t *vp, int fd); 540 extern int vn_rdwr(int uio, vnode_t *vp, void *addr, ssize_t len, 541 offset_t offset, int x1, int x2, rlim64_t x3, void *x4, ssize_t *residp); 542 extern void vn_close(vnode_t *vp, int openflag, cred_t *cr, kthread_t *td); 543 544 #define vn_remove(path, x1, x2) remove(path) 545 #define vn_rename(from, to, seg) rename((from), (to)) 546 #define vn_is_readonly(vp) B_FALSE 547 548 extern vnode_t *rootdir; 549 550 #include <sys/file.h> /* for FREAD, FWRITE, etc */ 551 #define FTRUNC O_TRUNC 552 553 /* 554 * Random stuff 555 */ 556 #define ddi_get_lbolt() (gethrtime() >> 23) 557 #define ddi_get_lbolt64() (gethrtime() >> 23) 558 #define hz 119 /* frequency when using gethrtime() >> 23 for lbolt */ 559 560 extern void delay(clock_t ticks); 561 562 #define SEC_TO_TICK(sec) ((sec) * hz) 563 #define NSEC_TO_TICK(nsec) ((nsec) / (NANOSEC / hz)) 564 565 #define gethrestime_sec() time(NULL) 566 #define gethrestime(t) \ 567 do {\ 568 (t)->tv_sec = gethrestime_sec();\ 569 (t)->tv_nsec = 0;\ 570 } while (0); 571 572 #define max_ncpus 64 573 574 #define minclsyspri 60 575 #define maxclsyspri 99 576 577 #define CPU_SEQID (thr_self() & (max_ncpus - 1)) 578 579 #define kcred NULL 580 #define CRED() NULL 581 582 #ifndef ptob 583 #define ptob(x) ((x) * PAGESIZE) 584 #endif 585 586 extern uint64_t physmem; 587 588 #ifndef __NetBSD__ 589 extern int highbit64(uint64_t i); 590 #endif 591 extern int random_get_bytes(uint8_t *ptr, size_t len); 592 extern int random_get_pseudo_bytes(uint8_t *ptr, size_t len); 593 594 extern void kernel_init(int); 595 extern void kernel_fini(void); 596 597 struct spa; 598 extern void nicenum(uint64_t num, char *buf); 599 extern void show_pool_stats(struct spa *); 600 601 typedef struct callb_cpr { 602 kmutex_t *cc_lockp; 603 } callb_cpr_t; 604 605 #define CALLB_CPR_INIT(cp, lockp, func, name) { \ 606 (cp)->cc_lockp = lockp; \ 607 } 608 609 #define CALLB_CPR_SAFE_BEGIN(cp) { \ 610 ASSERT(MUTEX_HELD((cp)->cc_lockp)); \ 611 } 612 613 #define CALLB_CPR_SAFE_END(cp, lockp) { \ 614 ASSERT(MUTEX_HELD((cp)->cc_lockp)); \ 615 } 616 617 #define CALLB_CPR_EXIT(cp) { \ 618 ASSERT(MUTEX_HELD((cp)->cc_lockp)); \ 619 mutex_exit((cp)->cc_lockp); \ 620 } 621 622 #define zone_dataset_visible(x, y) (1) 623 #define INGLOBALZONE(z) (1) 624 625 extern char *kmem_asprintf(const char *fmt, ...); 626 #define strfree(str) kmem_free((str), strlen(str) + 1) 627 628 /* 629 * Hostname information 630 */ 631 extern struct utsname utsname; 632 extern char hw_serial[]; /* for userland-emulated hostid access */ 633 extern int ddi_strtoul(const char *str, char **nptr, int base, 634 unsigned long *result); 635 636 extern int ddi_strtoull(const char *str, char **nptr, int base, 637 u_longlong_t *result); 638 639 /* ZFS Boot Related stuff. */ 640 641 struct _buf { 642 intptr_t _fd; 643 }; 644 645 struct bootstat { 646 uint64_t st_size; 647 }; 648 649 typedef struct ace_object { 650 uid_t a_who; 651 uint32_t a_access_mask; 652 uint16_t a_flags; 653 uint16_t a_type; 654 uint8_t a_obj_type[16]; 655 uint8_t a_inherit_obj_type[16]; 656 } ace_object_t; 657 658 659 #define ACE_ACCESS_ALLOWED_OBJECT_ACE_TYPE 0x05 660 #define ACE_ACCESS_DENIED_OBJECT_ACE_TYPE 0x06 661 #define ACE_SYSTEM_AUDIT_OBJECT_ACE_TYPE 0x07 662 #define ACE_SYSTEM_ALARM_OBJECT_ACE_TYPE 0x08 663 664 extern struct _buf *kobj_open_file(char *name); 665 extern int kobj_read_file(struct _buf *file, char *buf, unsigned size, 666 unsigned off); 667 extern void kobj_close_file(struct _buf *file); 668 extern int kobj_get_filesize(struct _buf *file, uint64_t *size); 669 extern int zfs_secpolicy_snapshot_perms(const char *name, cred_t *cr); 670 extern int zfs_secpolicy_rename_perms(const char *from, const char *to, 671 cred_t *cr); 672 extern int zfs_secpolicy_destroy_perms(const char *name, cred_t *cr); 673 #ifndef __NetBSD__ 674 extern zoneid_t getzoneid(void); 675 #endif 676 /* Random compatibility stuff. */ 677 #define pwrite64(d, p, n, o) pwrite(d, p, n, o) 678 #define readdir64(d) readdir(d) 679 #define SIGPENDING(td) (0) 680 #define root_mount_wait() do { } while (0) 681 #define root_mounted() (1) 682 683 struct file { 684 void *dummy; 685 }; 686 687 #define FCREAT O_CREAT 688 #define FOFFMAX 0x0 689 690 /* SID stuff */ 691 typedef struct ksiddomain { 692 uint_t kd_ref; 693 uint_t kd_len; 694 char *kd_name; 695 } ksiddomain_t; 696 697 ksiddomain_t *ksid_lookupdomain(const char *); 698 void ksiddomain_rele(ksiddomain_t *); 699 700 typedef uint32_t idmap_rid_t; 701 702 #define DDI_SLEEP KM_SLEEP 703 #define ddi_log_sysevent(_a, _b, _c, _d, _e, _f, _g) (0) 704 705 #define SX_SYSINIT(name, lock, desc) 706 707 #define SYSCTL_HANDLER_ARGS struct sysctl_oid *oidp, void *arg1, \ 708 intptr_t arg2, struct sysctl_req *req 709 710 /* 711 * This describes the access space for a sysctl request. This is needed 712 * so that we can use the interface from the kernel or from user-space. 713 */ 714 struct sysctl_req { 715 struct thread *td; /* used for access checking */ 716 int lock; /* wiring state */ 717 void *oldptr; 718 size_t oldlen; 719 size_t oldidx; 720 int (*oldfunc)(struct sysctl_req *, const void *, size_t); 721 void *newptr; 722 size_t newlen; 723 size_t newidx; 724 int (*newfunc)(struct sysctl_req *, void *, size_t); 725 size_t validlen; 726 int flags; 727 }; 728 729 SLIST_HEAD(sysctl_oid_list, sysctl_oid); 730 731 /* 732 * This describes one "oid" in the MIB tree. Potentially more nodes can 733 * be hidden behind it, expanded by the handler. 734 */ 735 struct sysctl_oid { 736 struct sysctl_oid_list *oid_parent; 737 SLIST_ENTRY(sysctl_oid) oid_link; 738 int oid_number; 739 u_int oid_kind; 740 void *oid_arg1; 741 intptr_t oid_arg2; 742 const char *oid_name; 743 int (*oid_handler)(SYSCTL_HANDLER_ARGS); 744 const char *oid_fmt; 745 int oid_refcnt; 746 u_int oid_running; 747 const char *oid_descr; 748 }; 749 750 #define SYSCTL_DECL(...) 751 #define SYSCTL_NODE(...) 752 #define SYSCTL_INT(...) 753 #define SYSCTL_UINT(...) 754 #define SYSCTL_ULONG(...) 755 #define SYSCTL_PROC(...) 756 #define SYSCTL_QUAD(...) 757 #define SYSCTL_UQUAD(...) 758 #ifdef TUNABLE_INT 759 #undef TUNABLE_INT 760 #undef TUNABLE_ULONG 761 #undef TUNABLE_QUAD 762 #endif 763 #define TUNABLE_INT(...) 764 #define TUNABLE_ULONG(...) 765 #define TUNABLE_QUAD(...) 766 767 int sysctl_handle_64(SYSCTL_HANDLER_ARGS); 768 769 /* Errors */ 770 771 #ifndef ERESTART 772 #define ERESTART (-1) 773 #endif 774 775 #if defined(illumos) || defined(__NetBSD__) 776 /* 777 * Cyclic information 778 */ 779 extern kmutex_t cpu_lock; 780 781 typedef uintptr_t cyclic_id_t; 782 typedef uint16_t cyc_level_t; 783 typedef void (*cyc_func_t)(void *); 784 785 #define CY_LOW_LEVEL 0 786 #define CY_INFINITY INT64_MAX 787 #define CYCLIC_NONE ((cyclic_id_t)0) 788 789 typedef struct cyc_time { 790 hrtime_t cyt_when; 791 hrtime_t cyt_interval; 792 } cyc_time_t; 793 794 typedef struct cyc_handler { 795 cyc_func_t cyh_func; 796 void *cyh_arg; 797 cyc_level_t cyh_level; 798 } cyc_handler_t; 799 800 extern cyclic_id_t cyclic_add(cyc_handler_t *, cyc_time_t *); 801 extern void cyclic_remove(cyclic_id_t); 802 extern int cyclic_reprogram(cyclic_id_t, hrtime_t); 803 #endif /* illumos */ 804 805 #ifdef illumos 806 /* 807 * Buf structure 808 */ 809 #define B_BUSY 0x0001 810 #define B_DONE 0x0002 811 #define B_ERROR 0x0004 812 #define B_READ 0x0040 /* read when I/O occurs */ 813 #define B_WRITE 0x0100 /* non-read pseudo-flag */ 814 815 typedef struct buf { 816 int b_flags; 817 size_t b_bcount; 818 union { 819 caddr_t b_addr; 820 } b_un; 821 822 lldaddr_t _b_blkno; 823 #define b_lblkno _b_blkno._f 824 size_t b_resid; 825 size_t b_bufsize; 826 int (*b_iodone)(struct buf *); 827 int b_error; 828 void *b_private; 829 } buf_t; 830 831 extern void bioinit(buf_t *); 832 extern void biodone(buf_t *); 833 extern void bioerror(buf_t *, int); 834 extern int geterror(buf_t *); 835 #endif 836 837 #ifdef __cplusplus 838 } 839 #endif 840 841 #endif /* _SYS_ZFS_CONTEXT_H */ 842