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 34extern "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 130typedef u_longlong_t rlim64_t; 131#define RLIM64_INFINITY ((rlim64_t)-3) 132 133#ifdef ZFS_DEBUG 134extern void dprintf_setup(int *argc, char **argv); 135#endif /* ZFS_DEBUG */ 136 137extern void cmn_err(int, const char *, ...); 138extern void vcmn_err(int, const char *, __va_list); 139extern void panic(const char *, ...); 140extern void vpanic(const char *, __va_list); 141 142#define fm_panic panic 143 144extern 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 230typedef 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 */ 240struct proc { 241 uintptr_t this_is_never_used_dont_dereference_it; 242}; 243 244extern struct proc p0; 245#define curproc (&p0) 246 247#define PS_NONE -1 248 249extern 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 */ 257typedef 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 282extern void zmutex_init(kmutex_t *mp); 283extern void zmutex_destroy(kmutex_t *mp); 284extern int zmutex_owned(kmutex_t *mp); 285extern void mutex_enter(kmutex_t *mp); 286extern void mutex_exit(kmutex_t *mp); 287extern int mutex_tryenter(kmutex_t *mp); 288extern void *mutex_owner(kmutex_t *mp); 289 290/* 291 * RW locks 292 */ 293typedef struct krwlock { 294 int rw_count; 295 void *rw_owner; 296 boolean_t initialized; 297 rwlock_t rw_lock; 298} krwlock_t; 299 300typedef 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 316extern void rw_init(krwlock_t *rwlp, char *name, int type, void *arg); 317extern void rw_destroy(krwlock_t *rwlp); 318extern void rw_enter(krwlock_t *rwlp, krw_t rw); 319extern int rw_tryenter(krwlock_t *rwlp, krw_t rw); 320extern int rw_tryupgrade(krwlock_t *rwlp); 321extern void rw_exit(krwlock_t *rwlp); 322extern int rw_lock_held(krwlock_t *rwlp); 323#define rw_downgrade(rwlp) do { } while (0) 324 325extern uid_t crgetuid(cred_t *cr); 326extern uid_t crgetruid(cred_t *cr); 327extern gid_t crgetgid(cred_t *cr); 328extern int crgetngroups(cred_t *cr); 329extern gid_t *crgetgroups(cred_t *cr); 330 331/* 332 * Condition variables 333 */ 334typedef cond_t kcondvar_t; 335 336#define CV_DEFAULT USYNC_THREAD 337#define CALLOUT_FLAG_ABSOLUTE 0x2 338 339extern void cv_init(kcondvar_t *cv, char *name, int type, void *arg); 340extern void cv_destroy(kcondvar_t *cv); 341extern void cv_wait(kcondvar_t *cv, kmutex_t *mp); 342extern clock_t cv_timedwait(kcondvar_t *cv, kmutex_t *mp, clock_t abstime); 343extern clock_t cv_timedwait_hires(kcondvar_t *cvp, kmutex_t *mp, hrtime_t tim, 344 hrtime_t res, int flag); 345extern void cv_signal(kcondvar_t *cv); 346extern 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 380typedef umem_cache_t kmem_cache_t; 381 382typedef 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 */ 393typedef struct taskq taskq_t; 394typedef uintptr_t taskqid_t; 395typedef void (task_func_t)(void *); 396 397typedef 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 419extern taskq_t *system_taskq; 420 421extern 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)) 426extern taskqid_t taskq_dispatch(taskq_t *, task_func_t, void *, uint_t); 427extern void taskq_dispatch_ent(taskq_t *, task_func_t, void *, uint_t, 428 taskq_ent_t *); 429extern void taskq_destroy(taskq_t *); 430extern void taskq_wait(taskq_t *); 431extern int taskq_member(taskq_t *, void *); 432extern void system_taskq_init(void); 433extern 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 */ 444typedef struct vnode { 445 uint64_t v_size; 446 int v_fd; 447 char *v_path; 448 int v_dump_fd; 449} vnode_t; 450 451extern char *vn_dumpdir; 452#define AV_SCANSTAMP_SZ 32 /* length of anti-virus scanstamp */ 453 454typedef 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 474typedef 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 480typedef 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 490typedef 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 518extern 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 536extern int vn_open(char *path, int x1, int oflags, int mode, vnode_t **vpp, 537 int x2, int x3); 538extern int vn_openat(char *path, int x1, int oflags, int mode, vnode_t **vpp, 539 int x2, int x3, vnode_t *vp, int fd); 540extern 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); 542extern 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 548extern 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 560extern 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 586extern uint64_t physmem; 587 588#ifndef __NetBSD__ 589extern int highbit64(uint64_t i); 590#endif 591extern int random_get_bytes(uint8_t *ptr, size_t len); 592extern int random_get_pseudo_bytes(uint8_t *ptr, size_t len); 593 594extern void kernel_init(int); 595extern void kernel_fini(void); 596 597struct spa; 598extern void nicenum(uint64_t num, char *buf); 599extern void show_pool_stats(struct spa *); 600 601typedef 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 625extern char *kmem_asprintf(const char *fmt, ...); 626#define strfree(str) kmem_free((str), strlen(str) + 1) 627 628/* 629 * Hostname information 630 */ 631extern struct utsname utsname; 632extern char hw_serial[]; /* for userland-emulated hostid access */ 633extern int ddi_strtoul(const char *str, char **nptr, int base, 634 unsigned long *result); 635 636extern int ddi_strtoull(const char *str, char **nptr, int base, 637 u_longlong_t *result); 638 639/* ZFS Boot Related stuff. */ 640 641struct _buf { 642 intptr_t _fd; 643}; 644 645struct bootstat { 646 uint64_t st_size; 647}; 648 649typedef 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 664extern struct _buf *kobj_open_file(char *name); 665extern int kobj_read_file(struct _buf *file, char *buf, unsigned size, 666 unsigned off); 667extern void kobj_close_file(struct _buf *file); 668extern int kobj_get_filesize(struct _buf *file, uint64_t *size); 669extern int zfs_secpolicy_snapshot_perms(const char *name, cred_t *cr); 670extern int zfs_secpolicy_rename_perms(const char *from, const char *to, 671 cred_t *cr); 672extern int zfs_secpolicy_destroy_perms(const char *name, cred_t *cr); 673#ifndef __NetBSD__ 674extern 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 683struct file { 684 void *dummy; 685}; 686 687#define FCREAT O_CREAT 688#define FOFFMAX 0x0 689 690/* SID stuff */ 691typedef struct ksiddomain { 692 uint_t kd_ref; 693 uint_t kd_len; 694 char *kd_name; 695} ksiddomain_t; 696 697ksiddomain_t *ksid_lookupdomain(const char *); 698void ksiddomain_rele(ksiddomain_t *); 699 700typedef 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 */ 714struct 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 729SLIST_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 */ 735struct 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 767int 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 */ 779extern kmutex_t cpu_lock; 780 781typedef uintptr_t cyclic_id_t; 782typedef uint16_t cyc_level_t; 783typedef 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 789typedef struct cyc_time { 790 hrtime_t cyt_when; 791 hrtime_t cyt_interval; 792} cyc_time_t; 793 794typedef struct cyc_handler { 795 cyc_func_t cyh_func; 796 void *cyh_arg; 797 cyc_level_t cyh_level; 798} cyc_handler_t; 799 800extern cyclic_id_t cyclic_add(cyc_handler_t *, cyc_time_t *); 801extern void cyclic_remove(cyclic_id_t); 802extern 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 815typedef 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 831extern void bioinit(buf_t *); 832extern void biodone(buf_t *); 833extern void bioerror(buf_t *, int); 834extern int geterror(buf_t *); 835#endif 836 837#ifdef __cplusplus 838} 839#endif 840 841#endif /* _SYS_ZFS_CONTEXT_H */ 842