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, 2016 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 #define _SYS_SCHED_H_ 47 48 #include <solaris.h> 49 #include <stdio.h> 50 #include <stdlib.h> 51 #include <stddef.h> 52 #include <stdarg.h> 53 #include <fcntl.h> 54 #include <unistd.h> 55 #include <errno.h> 56 #include <string.h> 57 #include <strings.h> 58 #include <thread.h> 59 #include <assert.h> 60 #include <limits.h> 61 #include <dirent.h> 62 #include <time.h> 63 #include <math.h> 64 #include <umem.h> 65 #include <inttypes.h> 66 #include <fsshare.h> 67 #include <pthread.h> 68 #include <sched.h> 69 #include <setjmp.h> 70 #include <sys/debug.h> 71 #include <sys/note.h> 72 #include <sys/types.h> 73 #include <sys/cred.h> 74 #include <sys/atomic.h> 75 #include <sys/sysmacros.h> 76 #include <sys/bitmap.h> 77 #include <sys/resource.h> 78 #include <sys/byteorder.h> 79 #include <sys/list.h> 80 #include <sys/time.h> 81 #include <sys/uio.h> 82 #include <sys/mntent.h> 83 #include <sys/mnttab.h> 84 #include <sys/zfs_debug.h> 85 #include <sys/sdt.h> 86 #include <sys/kstat.h> 87 #include <sys/u8_textprep.h> 88 #include <sys/kernel.h> 89 #include <sys/disk.h> 90 #include <sys/sysevent.h> 91 #include <sys/sysevent/eventdefs.h> 92 #include <sys/sysevent/dev.h> 93 #include <machine/atomic.h> 94 #include <sys/debug.h> 95 #ifdef illumos 96 #include "zfs.h" 97 #endif 98 99 #define ZFS_EXPORTS_PATH "/etc/zfs/exports" 100 101 /* 102 * Debugging 103 */ 104 105 /* 106 * Note that we are not using the debugging levels. 107 */ 108 109 #define CE_CONT 0 /* continuation */ 110 #define CE_NOTE 1 /* notice */ 111 #define CE_WARN 2 /* warning */ 112 #define CE_PANIC 3 /* panic */ 113 #define CE_IGNORE 4 /* print nothing */ 114 115 /* 116 * ZFS debugging 117 */ 118 119 #define ZFS_LOG(...) do { } while (0) 120 121 typedef u_longlong_t rlim64_t; 122 #define RLIM64_INFINITY ((rlim64_t)-3) 123 124 #ifdef ZFS_DEBUG 125 extern void dprintf_setup(int *argc, char **argv); 126 #endif /* ZFS_DEBUG */ 127 128 extern void cmn_err(int, const char *, ...); 129 extern void vcmn_err(int, const char *, __va_list); 130 extern void panic(const char *, ...) __NORETURN; 131 extern void vpanic(const char *, __va_list) __NORETURN; 132 133 #define fm_panic panic 134 135 extern int aok; 136 137 /* 138 * DTrace SDT probes have different signatures in userland than they do in 139 * the kernel. If they're being used in kernel code, re-define them out of 140 * existence for their counterparts in libzpool. 141 * 142 * Here's an example of how to use the set-error probes in userland: 143 * zfs$target:::set-error /arg0 == EBUSY/ {stack();} 144 * 145 * Here's an example of how to use DTRACE_PROBE probes in userland: 146 * If there is a probe declared as follows: 147 * DTRACE_PROBE2(zfs__probe_name, uint64_t, blkid, dnode_t *, dn); 148 * Then you can use it as follows: 149 * zfs$target:::probe2 /copyinstr(arg0) == "zfs__probe_name"/ 150 * {printf("%u %p\n", arg1, arg2);} 151 */ 152 153 #ifdef DTRACE_PROBE 154 #undef DTRACE_PROBE 155 #endif /* DTRACE_PROBE */ 156 #ifdef illumos 157 #define DTRACE_PROBE(a) \ 158 ZFS_PROBE0(#a) 159 #endif 160 161 #ifdef DTRACE_PROBE1 162 #undef DTRACE_PROBE1 163 #endif /* DTRACE_PROBE1 */ 164 #ifdef illumos 165 #define DTRACE_PROBE1(a, b, c) \ 166 ZFS_PROBE1(#a, (unsigned long)c) 167 #endif 168 169 #ifdef DTRACE_PROBE2 170 #undef DTRACE_PROBE2 171 #endif /* DTRACE_PROBE2 */ 172 #ifdef illumos 173 #define DTRACE_PROBE2(a, b, c, d, e) \ 174 ZFS_PROBE2(#a, (unsigned long)c, (unsigned long)e) 175 #endif 176 177 #ifdef DTRACE_PROBE3 178 #undef DTRACE_PROBE3 179 #endif /* DTRACE_PROBE3 */ 180 #ifdef illumos 181 #define DTRACE_PROBE3(a, b, c, d, e, f, g) \ 182 ZFS_PROBE3(#a, (unsigned long)c, (unsigned long)e, (unsigned long)g) 183 #endif 184 185 #ifdef DTRACE_PROBE4 186 #undef DTRACE_PROBE4 187 #endif /* DTRACE_PROBE4 */ 188 #ifdef illumos 189 #define DTRACE_PROBE4(a, b, c, d, e, f, g, h, i) \ 190 ZFS_PROBE4(#a, (unsigned long)c, (unsigned long)e, (unsigned long)g, \ 191 (unsigned long)i) 192 #endif 193 194 #ifdef illumos 195 /* 196 * We use the comma operator so that this macro can be used without much 197 * additional code. For example, "return (EINVAL);" becomes 198 * "return (SET_ERROR(EINVAL));". Note that the argument will be evaluated 199 * twice, so it should not have side effects (e.g. something like: 200 * "return (SET_ERROR(log_error(EINVAL, info)));" would log the error twice). 201 */ 202 #define SET_ERROR(err) (ZFS_SET_ERROR(err), err) 203 #else /* !illumos */ 204 205 #define DTRACE_PROBE(a) ((void)0) 206 #define DTRACE_PROBE1(a, b, c) ((void)0) 207 #define DTRACE_PROBE2(a, b, c, d, e) ((void)0) 208 #define DTRACE_PROBE3(a, b, c, d, e, f, g) ((void)0) 209 #define DTRACE_PROBE4(a, b, c, d, e, f, g, h, i) ((void)0) 210 211 #define SET_ERROR(err) (err) 212 #endif /* !illumos */ 213 214 /* 215 * Threads 216 */ 217 #define curthread ((void *)(uintptr_t)thr_self()) 218 219 #define kpreempt(x) sched_yield() 220 221 typedef struct kthread kthread_t; 222 223 #define thread_create(stk, stksize, func, arg, len, pp, state, pri) \ 224 zk_thread_create(func, arg) 225 #define thread_exit() thr_exit(NULL) 226 #define thread_join(t) panic("libzpool cannot join threads") 227 228 #define newproc(f, a, cid, pri, ctp, pid) (ENOSYS) 229 230 /* in libzpool, p0 exists only to have its address taken */ 231 struct proc { 232 uintptr_t this_is_never_used_dont_dereference_it; 233 }; 234 235 extern struct proc p0; 236 #define curproc (&p0) 237 238 #define PS_NONE -1 239 240 extern kthread_t *zk_thread_create(void (*func)(void*), void *arg); 241 242 #define issig(why) (FALSE) 243 #define ISSIG(thr, why) (FALSE) 244 245 /* 246 * Mutexes 247 */ 248 typedef struct kmutex { 249 void *m_owner; 250 boolean_t initialized; 251 mutex_t m_lock; 252 } kmutex_t; 253 254 #define MUTEX_DEFAULT USYNC_THREAD 255 #undef MUTEX_HELD 256 #undef MUTEX_NOT_HELD 257 #define MUTEX_HELD(m) ((m)->m_owner == curthread) 258 #define MUTEX_NOT_HELD(m) (!MUTEX_HELD(m)) 259 #define _mutex_held(m) pthread_mutex_isowned_np(m) 260 261 /* 262 * Argh -- we have to get cheesy here because the kernel and userland 263 * have different signatures for the same routine. 264 */ 265 //extern int _mutex_init(mutex_t *mp, int type, void *arg); 266 //extern int _mutex_destroy(mutex_t *mp); 267 //extern int _mutex_owned(mutex_t *mp); 268 269 #define mutex_init(mp, b, c, d) zmutex_init((kmutex_t *)(mp)) 270 #define mutex_destroy(mp) zmutex_destroy((kmutex_t *)(mp)) 271 #define mutex_owned(mp) zmutex_owned((kmutex_t *)(mp)) 272 273 extern void zmutex_init(kmutex_t *mp); 274 extern void zmutex_destroy(kmutex_t *mp); 275 extern int zmutex_owned(kmutex_t *mp); 276 extern void mutex_enter(kmutex_t *mp); 277 extern void mutex_exit(kmutex_t *mp); 278 extern int mutex_tryenter(kmutex_t *mp); 279 extern void *mutex_owner(kmutex_t *mp); 280 281 /* 282 * RW locks 283 */ 284 typedef struct krwlock { 285 int rw_count; 286 void *rw_owner; 287 boolean_t initialized; 288 rwlock_t rw_lock; 289 } krwlock_t; 290 291 typedef int krw_t; 292 293 #define RW_READER 0 294 #define RW_WRITER 1 295 #define RW_DEFAULT USYNC_THREAD 296 297 #undef RW_READ_HELD 298 #define RW_READ_HELD(x) ((x)->rw_owner == NULL && (x)->rw_count > 0) 299 300 #undef RW_WRITE_HELD 301 #define RW_WRITE_HELD(x) ((x)->rw_owner == curthread) 302 #define RW_LOCK_HELD(x) rw_lock_held(x) 303 304 #undef RW_LOCK_HELD 305 #define RW_LOCK_HELD(x) (RW_READ_HELD(x) || RW_WRITE_HELD(x)) 306 307 extern void rw_init(krwlock_t *rwlp, char *name, int type, void *arg); 308 extern void rw_destroy(krwlock_t *rwlp); 309 extern void rw_enter(krwlock_t *rwlp, krw_t rw); 310 extern int rw_tryenter(krwlock_t *rwlp, krw_t rw); 311 extern int rw_tryupgrade(krwlock_t *rwlp); 312 extern void rw_exit(krwlock_t *rwlp); 313 extern int rw_lock_held(krwlock_t *rwlp); 314 #define rw_downgrade(rwlp) do { } while (0) 315 316 extern uid_t crgetuid(cred_t *cr); 317 extern uid_t crgetruid(cred_t *cr); 318 extern gid_t crgetgid(cred_t *cr); 319 extern int crgetngroups(cred_t *cr); 320 extern gid_t *crgetgroups(cred_t *cr); 321 322 /* 323 * Condition variables 324 */ 325 typedef cond_t kcondvar_t; 326 327 #define CV_DEFAULT USYNC_THREAD 328 #define CALLOUT_FLAG_ABSOLUTE 0x2 329 330 extern void cv_init(kcondvar_t *cv, char *name, int type, void *arg); 331 extern void cv_destroy(kcondvar_t *cv); 332 extern void cv_wait(kcondvar_t *cv, kmutex_t *mp); 333 extern clock_t cv_timedwait(kcondvar_t *cv, kmutex_t *mp, clock_t abstime); 334 extern clock_t cv_timedwait_hires(kcondvar_t *cvp, kmutex_t *mp, hrtime_t tim, 335 hrtime_t res, int flag); 336 extern void cv_signal(kcondvar_t *cv); 337 extern void cv_broadcast(kcondvar_t *cv); 338 339 /* 340 * Thread-specific data 341 */ 342 #define tsd_get(k) pthread_getspecific(k) 343 #define tsd_set(k, v) pthread_setspecific(k, v) 344 #define tsd_create(kp, d) pthread_key_create(kp, d) 345 #define tsd_destroy(kp) /* nothing */ 346 347 /* 348 * Kernel memory 349 */ 350 #define KM_SLEEP UMEM_NOFAIL 351 #define KM_PUSHPAGE KM_SLEEP 352 #define KM_NOSLEEP UMEM_DEFAULT 353 #define KM_NORMALPRI 0 /* not needed with UMEM_DEFAULT */ 354 #define KMC_NODEBUG UMC_NODEBUG 355 #define KMC_NOTOUCH 0 /* not needed for userland caches */ 356 #define KM_NODEBUG 0 357 #define kmem_alloc(_s, _f) umem_alloc(_s, _f) 358 #define kmem_zalloc(_s, _f) umem_zalloc(_s, _f) 359 #define kmem_free(_b, _s) umem_free(_b, _s) 360 #define kmem_size() (physmem * PAGESIZE) 361 #define kmem_cache_create(_a, _b, _c, _d, _e, _f, _g, _h, _i) \ 362 umem_cache_create(_a, _b, _c, _d, _e, _f, _g, _h, _i) 363 #define kmem_cache_destroy(_c) umem_cache_destroy(_c) 364 #define kmem_cache_alloc(_c, _f) umem_cache_alloc(_c, _f) 365 #define kmem_cache_free(_c, _b) umem_cache_free(_c, _b) 366 #define kmem_debugging() 0 367 #define kmem_cache_reap_active() (B_FALSE) 368 #define kmem_cache_reap_soon(_c) /* nothing */ 369 #define kmem_cache_set_move(_c, _cb) /* nothing */ 370 #define POINTER_INVALIDATE(_pp) /* nothing */ 371 #define POINTER_IS_VALID(_p) 0 372 373 typedef umem_cache_t kmem_cache_t; 374 375 typedef enum kmem_cbrc { 376 KMEM_CBRC_YES, 377 KMEM_CBRC_NO, 378 KMEM_CBRC_LATER, 379 KMEM_CBRC_DONT_NEED, 380 KMEM_CBRC_DONT_KNOW 381 } kmem_cbrc_t; 382 383 /* 384 * Task queues 385 */ 386 typedef struct taskq taskq_t; 387 typedef uintptr_t taskqid_t; 388 typedef void (task_func_t)(void *); 389 390 typedef struct taskq_ent { 391 struct taskq_ent *tqent_next; 392 struct taskq_ent *tqent_prev; 393 task_func_t *tqent_func; 394 void *tqent_arg; 395 uintptr_t tqent_flags; 396 } taskq_ent_t; 397 398 #define TQENT_FLAG_PREALLOC 0x1 /* taskq_dispatch_ent used */ 399 400 #define TASKQ_PREPOPULATE 0x0001 401 #define TASKQ_CPR_SAFE 0x0002 /* Use CPR safe protocol */ 402 #define TASKQ_DYNAMIC 0x0004 /* Use dynamic thread scheduling */ 403 #define TASKQ_THREADS_CPU_PCT 0x0008 /* Scale # threads by # cpus */ 404 #define TASKQ_DC_BATCH 0x0010 /* Mark threads as batch */ 405 406 #define TQ_SLEEP KM_SLEEP /* Can block for memory */ 407 #define TQ_NOSLEEP KM_NOSLEEP /* cannot block for memory; may fail */ 408 #define TQ_NOQUEUE 0x02 /* Do not enqueue if can't dispatch */ 409 #define TQ_FRONT 0x08 /* Queue in front */ 410 411 #define TASKQID_INVALID ((taskqid_t)0) 412 413 extern taskq_t *system_taskq; 414 415 extern taskq_t *taskq_create(const char *, int, pri_t, int, int, uint_t); 416 #define taskq_create_proc(a, b, c, d, e, p, f) \ 417 (taskq_create(a, b, c, d, e, f)) 418 #define taskq_create_sysdc(a, b, d, e, p, dc, f) \ 419 (taskq_create(a, b, maxclsyspri, d, e, f)) 420 extern taskqid_t taskq_dispatch(taskq_t *, task_func_t, void *, uint_t); 421 extern void taskq_dispatch_ent(taskq_t *, task_func_t, void *, uint_t, 422 taskq_ent_t *); 423 extern void taskq_destroy(taskq_t *); 424 extern void taskq_wait(taskq_t *); 425 extern void taskq_wait_id(taskq_t *, taskqid_t); 426 extern int taskq_member(taskq_t *, void *); 427 extern void system_taskq_init(void); 428 extern void system_taskq_fini(void); 429 430 #define taskq_dispatch_safe(tq, func, arg, flags, task) \ 431 taskq_dispatch((tq), (func), (arg), (flags)) 432 433 #define XVA_MAPSIZE 3 434 #define XVA_MAGIC 0x78766174 435 436 /* 437 * vnodes 438 */ 439 typedef struct vnode { 440 uint64_t v_size; 441 int v_fd; 442 char *v_path; 443 int v_dump_fd; 444 } vnode_t; 445 446 extern char *vn_dumpdir; 447 #define AV_SCANSTAMP_SZ 32 /* length of anti-virus scanstamp */ 448 449 typedef struct xoptattr { 450 timestruc_t xoa_createtime; /* Create time of file */ 451 uint8_t xoa_archive; 452 uint8_t xoa_system; 453 uint8_t xoa_readonly; 454 uint8_t xoa_hidden; 455 uint8_t xoa_nounlink; 456 uint8_t xoa_immutable; 457 uint8_t xoa_appendonly; 458 uint8_t xoa_nodump; 459 uint8_t xoa_settable; 460 uint8_t xoa_opaque; 461 uint8_t xoa_av_quarantined; 462 uint8_t xoa_av_modified; 463 uint8_t xoa_av_scanstamp[AV_SCANSTAMP_SZ]; 464 uint8_t xoa_reparse; 465 uint8_t xoa_offline; 466 uint8_t xoa_sparse; 467 } xoptattr_t; 468 469 typedef struct vattr { 470 uint_t va_mask; /* bit-mask of attributes */ 471 u_offset_t va_size; /* file size in bytes */ 472 } vattr_t; 473 474 475 typedef struct xvattr { 476 vattr_t xva_vattr; /* Embedded vattr structure */ 477 uint32_t xva_magic; /* Magic Number */ 478 uint32_t xva_mapsize; /* Size of attr bitmap (32-bit words) */ 479 uint32_t *xva_rtnattrmapp; /* Ptr to xva_rtnattrmap[] */ 480 uint32_t xva_reqattrmap[XVA_MAPSIZE]; /* Requested attrs */ 481 uint32_t xva_rtnattrmap[XVA_MAPSIZE]; /* Returned attrs */ 482 xoptattr_t xva_xoptattrs; /* Optional attributes */ 483 } xvattr_t; 484 485 typedef struct vsecattr { 486 uint_t vsa_mask; /* See below */ 487 int vsa_aclcnt; /* ACL entry count */ 488 void *vsa_aclentp; /* pointer to ACL entries */ 489 int vsa_dfaclcnt; /* default ACL entry count */ 490 void *vsa_dfaclentp; /* pointer to default ACL entries */ 491 size_t vsa_aclentsz; /* ACE size in bytes of vsa_aclentp */ 492 } vsecattr_t; 493 494 #define AT_TYPE 0x00001 495 #define AT_MODE 0x00002 496 #define AT_UID 0x00004 497 #define AT_GID 0x00008 498 #define AT_FSID 0x00010 499 #define AT_NODEID 0x00020 500 #define AT_NLINK 0x00040 501 #define AT_SIZE 0x00080 502 #define AT_ATIME 0x00100 503 #define AT_MTIME 0x00200 504 #define AT_CTIME 0x00400 505 #define AT_RDEV 0x00800 506 #define AT_BLKSIZE 0x01000 507 #define AT_NBLOCKS 0x02000 508 #define AT_SEQ 0x08000 509 #define AT_XVATTR 0x10000 510 511 #define CRCREAT 0 512 513 extern int fop_getattr(vnode_t *vp, vattr_t *vap); 514 515 #define VOP_CLOSE(vp, f, c, o, cr, ct) 0 516 #define VOP_PUTPAGE(vp, of, sz, fl, cr, ct) 0 517 #define VOP_GETATTR(vp, vap, cr) fop_getattr((vp), (vap)); 518 519 #define VOP_FSYNC(vp, f, cr, ct) fsync((vp)->v_fd) 520 521 #define VN_RELE(vp) vn_close(vp, 0, NULL, NULL) 522 #define VN_RELE_ASYNC(vp, taskq) vn_close(vp, 0, NULL, NULL) 523 524 #define vn_lock(vp, type) 525 #define VOP_UNLOCK(vp, type) 526 527 extern int vn_open(char *path, int x1, int oflags, int mode, vnode_t **vpp, 528 int x2, int x3); 529 extern int vn_openat(char *path, int x1, int oflags, int mode, vnode_t **vpp, 530 int x2, int x3, vnode_t *vp, int fd); 531 extern int vn_rdwr(int uio, vnode_t *vp, void *addr, ssize_t len, 532 offset_t offset, int x1, int x2, rlim64_t x3, void *x4, ssize_t *residp); 533 extern void vn_close(vnode_t *vp, int openflag, cred_t *cr, kthread_t *td); 534 535 #define vn_remove(path, x1, x2) remove(path) 536 #define vn_rename(from, to, seg) rename((from), (to)) 537 #define vn_is_readonly(vp) B_FALSE 538 539 extern vnode_t *rootdir; 540 541 #include <sys/file.h> /* for FREAD, FWRITE, etc */ 542 #define FTRUNC O_TRUNC 543 544 /* 545 * Random stuff 546 */ 547 #define ddi_get_lbolt() (gethrtime() >> 23) 548 #define ddi_get_lbolt64() (gethrtime() >> 23) 549 #define hz 119 /* frequency when using gethrtime() >> 23 for lbolt */ 550 551 extern void delay(clock_t ticks); 552 553 #define SEC_TO_TICK(sec) ((sec) * hz) 554 #define NSEC_TO_TICK(nsec) ((nsec) / (NANOSEC / hz)) 555 556 #define gethrestime_sec() time(NULL) 557 #define gethrestime(t) \ 558 do {\ 559 (t)->tv_sec = gethrestime_sec();\ 560 (t)->tv_nsec = 0;\ 561 } while (0); 562 563 #define max_ncpus 64 564 #define boot_ncpus (sysconf(_SC_NPROCESSORS_ONLN)) 565 566 #define minclsyspri 60 567 #define maxclsyspri 99 568 569 #define CPU_SEQID (thr_self() & (max_ncpus - 1)) 570 571 #define kcred NULL 572 #define CRED() NULL 573 574 #ifndef ptob 575 #define ptob(x) ((x) * PAGESIZE) 576 #endif 577 578 extern uint64_t physmem; 579 580 extern int highbit64(uint64_t i); 581 extern int random_get_bytes(uint8_t *ptr, size_t len); 582 extern int random_get_pseudo_bytes(uint8_t *ptr, size_t len); 583 584 extern void kernel_init(int); 585 extern void kernel_fini(void); 586 587 struct spa; 588 extern void nicenum(uint64_t num, char *buf, size_t); 589 extern void show_pool_stats(struct spa *); 590 extern int set_global_var(char *arg); 591 592 typedef struct callb_cpr { 593 kmutex_t *cc_lockp; 594 } callb_cpr_t; 595 596 #define CALLB_CPR_INIT(cp, lockp, func, name) { \ 597 (cp)->cc_lockp = lockp; \ 598 } 599 600 #define CALLB_CPR_SAFE_BEGIN(cp) { \ 601 ASSERT(MUTEX_HELD((cp)->cc_lockp)); \ 602 } 603 604 #define CALLB_CPR_SAFE_END(cp, lockp) { \ 605 ASSERT(MUTEX_HELD((cp)->cc_lockp)); \ 606 } 607 608 #define CALLB_CPR_EXIT(cp) { \ 609 ASSERT(MUTEX_HELD((cp)->cc_lockp)); \ 610 mutex_exit((cp)->cc_lockp); \ 611 } 612 613 #define zone_dataset_visible(x, y) (1) 614 #define INGLOBALZONE(z) (1) 615 extern uint32_t zone_get_hostid(void *zonep); 616 617 extern char *kmem_asprintf(const char *fmt, ...); 618 #define strfree(str) kmem_free((str), strlen(str) + 1) 619 620 /* 621 * Hostname information 622 */ 623 extern struct utsname utsname; 624 extern char hw_serial[]; /* for userland-emulated hostid access */ 625 extern int ddi_strtoul(const char *str, char **nptr, int base, 626 unsigned long *result); 627 628 extern int ddi_strtoull(const char *str, char **nptr, int base, 629 u_longlong_t *result); 630 631 /* ZFS Boot Related stuff. */ 632 633 struct _buf { 634 intptr_t _fd; 635 }; 636 637 struct bootstat { 638 uint64_t st_size; 639 }; 640 641 typedef struct ace_object { 642 uid_t a_who; 643 uint32_t a_access_mask; 644 uint16_t a_flags; 645 uint16_t a_type; 646 uint8_t a_obj_type[16]; 647 uint8_t a_inherit_obj_type[16]; 648 } ace_object_t; 649 650 651 #define ACE_ACCESS_ALLOWED_OBJECT_ACE_TYPE 0x05 652 #define ACE_ACCESS_DENIED_OBJECT_ACE_TYPE 0x06 653 #define ACE_SYSTEM_AUDIT_OBJECT_ACE_TYPE 0x07 654 #define ACE_SYSTEM_ALARM_OBJECT_ACE_TYPE 0x08 655 656 extern struct _buf *kobj_open_file(char *name); 657 extern int kobj_read_file(struct _buf *file, char *buf, unsigned size, 658 unsigned off); 659 extern void kobj_close_file(struct _buf *file); 660 extern int kobj_get_filesize(struct _buf *file, uint64_t *size); 661 extern int zfs_secpolicy_snapshot_perms(const char *name, cred_t *cr); 662 extern int zfs_secpolicy_rename_perms(const char *from, const char *to, 663 cred_t *cr); 664 extern int zfs_secpolicy_destroy_perms(const char *name, cred_t *cr); 665 extern zoneid_t getzoneid(void); 666 /* Random compatibility stuff. */ 667 #define pwrite64(d, p, n, o) pwrite(d, p, n, o) 668 #define readdir64(d) readdir(d) 669 #define SIGPENDING(td) (0) 670 #define root_mount_wait() do { } while (0) 671 #define root_mounted() (1) 672 673 #define noinline __attribute__((noinline)) 674 #define likely(x) __builtin_expect((x), 1) 675 676 struct file { 677 void *dummy; 678 }; 679 680 #define FCREAT O_CREAT 681 #define FOFFMAX 0x0 682 683 /* SID stuff */ 684 typedef struct ksiddomain { 685 uint_t kd_ref; 686 uint_t kd_len; 687 char *kd_name; 688 } ksiddomain_t; 689 690 ksiddomain_t *ksid_lookupdomain(const char *); 691 void ksiddomain_rele(ksiddomain_t *); 692 693 typedef uint32_t idmap_rid_t; 694 695 #define DDI_SLEEP KM_SLEEP 696 #define ddi_log_sysevent(_a, _b, _c, _d, _e, _f, _g) (0) 697 698 #define SX_SYSINIT(name, lock, desc) 699 700 #define SYSCTL_HANDLER_ARGS struct sysctl_oid *oidp, void *arg1, \ 701 intptr_t arg2, struct sysctl_req *req 702 703 /* 704 * This describes the access space for a sysctl request. This is needed 705 * so that we can use the interface from the kernel or from user-space. 706 */ 707 struct sysctl_req { 708 struct thread *td; /* used for access checking */ 709 int lock; /* wiring state */ 710 void *oldptr; 711 size_t oldlen; 712 size_t oldidx; 713 int (*oldfunc)(struct sysctl_req *, const void *, size_t); 714 void *newptr; 715 size_t newlen; 716 size_t newidx; 717 int (*newfunc)(struct sysctl_req *, void *, size_t); 718 size_t validlen; 719 int flags; 720 }; 721 722 SLIST_HEAD(sysctl_oid_list, sysctl_oid); 723 724 /* 725 * This describes one "oid" in the MIB tree. Potentially more nodes can 726 * be hidden behind it, expanded by the handler. 727 */ 728 struct sysctl_oid { 729 struct sysctl_oid_list *oid_parent; 730 SLIST_ENTRY(sysctl_oid) oid_link; 731 int oid_number; 732 u_int oid_kind; 733 void *oid_arg1; 734 intptr_t oid_arg2; 735 const char *oid_name; 736 int (*oid_handler)(SYSCTL_HANDLER_ARGS); 737 const char *oid_fmt; 738 int oid_refcnt; 739 u_int oid_running; 740 const char *oid_descr; 741 }; 742 743 #define SYSCTL_DECL(...) 744 #define SYSCTL_NODE(...) 745 #define SYSCTL_INT(...) 746 #define SYSCTL_UINT(...) 747 #define SYSCTL_ULONG(...) 748 #define SYSCTL_PROC(...) 749 #define SYSCTL_QUAD(...) 750 #define SYSCTL_UQUAD(...) 751 #ifdef TUNABLE_INT 752 #undef TUNABLE_INT 753 #undef TUNABLE_ULONG 754 #undef TUNABLE_QUAD 755 #endif 756 #define TUNABLE_INT(...) 757 #define TUNABLE_ULONG(...) 758 #define TUNABLE_QUAD(...) 759 760 int sysctl_handle_64(SYSCTL_HANDLER_ARGS); 761 762 /* Errors */ 763 764 #ifndef ERESTART 765 #define ERESTART (-1) 766 #endif 767 768 #ifdef illumos 769 /* 770 * Cyclic information 771 */ 772 extern kmutex_t cpu_lock; 773 774 typedef uintptr_t cyclic_id_t; 775 typedef uint16_t cyc_level_t; 776 typedef void (*cyc_func_t)(void *); 777 778 #define CY_LOW_LEVEL 0 779 #define CY_INFINITY INT64_MAX 780 #define CYCLIC_NONE ((cyclic_id_t)0) 781 782 typedef struct cyc_time { 783 hrtime_t cyt_when; 784 hrtime_t cyt_interval; 785 } cyc_time_t; 786 787 typedef struct cyc_handler { 788 cyc_func_t cyh_func; 789 void *cyh_arg; 790 cyc_level_t cyh_level; 791 } cyc_handler_t; 792 793 extern cyclic_id_t cyclic_add(cyc_handler_t *, cyc_time_t *); 794 extern void cyclic_remove(cyclic_id_t); 795 extern int cyclic_reprogram(cyclic_id_t, hrtime_t); 796 #endif /* illumos */ 797 798 #ifdef illumos 799 /* 800 * Buf structure 801 */ 802 #define B_BUSY 0x0001 803 #define B_DONE 0x0002 804 #define B_ERROR 0x0004 805 #define B_READ 0x0040 /* read when I/O occurs */ 806 #define B_WRITE 0x0100 /* non-read pseudo-flag */ 807 808 typedef struct buf { 809 int b_flags; 810 size_t b_bcount; 811 union { 812 caddr_t b_addr; 813 } b_un; 814 815 lldaddr_t _b_blkno; 816 #define b_lblkno _b_blkno._f 817 size_t b_resid; 818 size_t b_bufsize; 819 int (*b_iodone)(struct buf *); 820 int b_error; 821 void *b_private; 822 } buf_t; 823 824 extern void bioinit(buf_t *); 825 extern void biodone(buf_t *); 826 extern void bioerror(buf_t *, int); 827 extern int geterror(buf_t *); 828 #endif 829 830 #ifdef __cplusplus 831 } 832 #endif 833 834 #endif /* _SYS_ZFS_CONTEXT_H */ 835