zfs_context.h revision 325534
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 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#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 121typedef u_longlong_t rlim64_t; 122#define RLIM64_INFINITY ((rlim64_t)-3) 123 124#ifdef ZFS_DEBUG 125extern void dprintf_setup(int *argc, char **argv); 126#endif /* ZFS_DEBUG */ 127 128extern void cmn_err(int, const char *, ...); 129extern void vcmn_err(int, const char *, __va_list); 130extern void panic(const char *, ...) __NORETURN; 131extern void vpanic(const char *, __va_list) __NORETURN; 132 133#define fm_panic panic 134 135extern 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 221typedef 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 */ 231struct proc { 232 uintptr_t this_is_never_used_dont_dereference_it; 233}; 234 235extern struct proc p0; 236#define curproc (&p0) 237 238#define PS_NONE -1 239 240extern kthread_t *zk_thread_create(void (*func)(), void *arg); 241 242#define issig(why) (FALSE) 243#define ISSIG(thr, why) (FALSE) 244 245/* 246 * Mutexes 247 */ 248typedef 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 273extern void zmutex_init(kmutex_t *mp); 274extern void zmutex_destroy(kmutex_t *mp); 275extern int zmutex_owned(kmutex_t *mp); 276extern void mutex_enter(kmutex_t *mp); 277extern void mutex_exit(kmutex_t *mp); 278extern int mutex_tryenter(kmutex_t *mp); 279extern void *mutex_owner(kmutex_t *mp); 280 281/* 282 * RW locks 283 */ 284typedef struct krwlock { 285 int rw_count; 286 void *rw_owner; 287 boolean_t initialized; 288 rwlock_t rw_lock; 289} krwlock_t; 290 291typedef 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 307extern void rw_init(krwlock_t *rwlp, char *name, int type, void *arg); 308extern void rw_destroy(krwlock_t *rwlp); 309extern void rw_enter(krwlock_t *rwlp, krw_t rw); 310extern int rw_tryenter(krwlock_t *rwlp, krw_t rw); 311extern int rw_tryupgrade(krwlock_t *rwlp); 312extern void rw_exit(krwlock_t *rwlp); 313extern int rw_lock_held(krwlock_t *rwlp); 314#define rw_downgrade(rwlp) do { } while (0) 315 316extern uid_t crgetuid(cred_t *cr); 317extern uid_t crgetruid(cred_t *cr); 318extern gid_t crgetgid(cred_t *cr); 319extern int crgetngroups(cred_t *cr); 320extern gid_t *crgetgroups(cred_t *cr); 321 322/* 323 * Condition variables 324 */ 325typedef cond_t kcondvar_t; 326 327#define CV_DEFAULT USYNC_THREAD 328#define CALLOUT_FLAG_ABSOLUTE 0x2 329 330extern void cv_init(kcondvar_t *cv, char *name, int type, void *arg); 331extern void cv_destroy(kcondvar_t *cv); 332extern void cv_wait(kcondvar_t *cv, kmutex_t *mp); 333extern clock_t cv_timedwait(kcondvar_t *cv, kmutex_t *mp, clock_t abstime); 334extern clock_t cv_timedwait_hires(kcondvar_t *cvp, kmutex_t *mp, hrtime_t tim, 335 hrtime_t res, int flag); 336extern void cv_signal(kcondvar_t *cv); 337extern 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_now(_c) /* nothing */ 368#define kmem_cache_set_move(_c, _cb) /* nothing */ 369#define POINTER_INVALIDATE(_pp) /* nothing */ 370#define POINTER_IS_VALID(_p) 0 371 372typedef umem_cache_t kmem_cache_t; 373 374typedef enum kmem_cbrc { 375 KMEM_CBRC_YES, 376 KMEM_CBRC_NO, 377 KMEM_CBRC_LATER, 378 KMEM_CBRC_DONT_NEED, 379 KMEM_CBRC_DONT_KNOW 380} kmem_cbrc_t; 381 382/* 383 * Task queues 384 */ 385typedef struct taskq taskq_t; 386typedef uintptr_t taskqid_t; 387typedef void (task_func_t)(void *); 388 389typedef struct taskq_ent { 390 struct taskq_ent *tqent_next; 391 struct taskq_ent *tqent_prev; 392 task_func_t *tqent_func; 393 void *tqent_arg; 394 uintptr_t tqent_flags; 395} taskq_ent_t; 396 397#define TQENT_FLAG_PREALLOC 0x1 /* taskq_dispatch_ent used */ 398 399#define TASKQ_PREPOPULATE 0x0001 400#define TASKQ_CPR_SAFE 0x0002 /* Use CPR safe protocol */ 401#define TASKQ_DYNAMIC 0x0004 /* Use dynamic thread scheduling */ 402#define TASKQ_THREADS_CPU_PCT 0x0008 /* Scale # threads by # cpus */ 403#define TASKQ_DC_BATCH 0x0010 /* Mark threads as batch */ 404 405#define TQ_SLEEP KM_SLEEP /* Can block for memory */ 406#define TQ_NOSLEEP KM_NOSLEEP /* cannot block for memory; may fail */ 407#define TQ_NOQUEUE 0x02 /* Do not enqueue if can't dispatch */ 408#define TQ_FRONT 0x08 /* Queue in front */ 409 410 411extern taskq_t *system_taskq; 412 413extern taskq_t *taskq_create(const char *, int, pri_t, int, int, uint_t); 414#define taskq_create_proc(a, b, c, d, e, p, f) \ 415 (taskq_create(a, b, c, d, e, f)) 416#define taskq_create_sysdc(a, b, d, e, p, dc, f) \ 417 (taskq_create(a, b, maxclsyspri, d, e, f)) 418extern taskqid_t taskq_dispatch(taskq_t *, task_func_t, void *, uint_t); 419extern void taskq_dispatch_ent(taskq_t *, task_func_t, void *, uint_t, 420 taskq_ent_t *); 421extern void taskq_destroy(taskq_t *); 422extern void taskq_wait(taskq_t *); 423extern int taskq_member(taskq_t *, void *); 424extern void system_taskq_init(void); 425extern void system_taskq_fini(void); 426 427#define taskq_dispatch_safe(tq, func, arg, flags, task) \ 428 taskq_dispatch((tq), (func), (arg), (flags)) 429 430#define XVA_MAPSIZE 3 431#define XVA_MAGIC 0x78766174 432 433/* 434 * vnodes 435 */ 436typedef struct vnode { 437 uint64_t v_size; 438 int v_fd; 439 char *v_path; 440 int v_dump_fd; 441} vnode_t; 442 443extern char *vn_dumpdir; 444#define AV_SCANSTAMP_SZ 32 /* length of anti-virus scanstamp */ 445 446typedef struct xoptattr { 447 timestruc_t xoa_createtime; /* Create time of file */ 448 uint8_t xoa_archive; 449 uint8_t xoa_system; 450 uint8_t xoa_readonly; 451 uint8_t xoa_hidden; 452 uint8_t xoa_nounlink; 453 uint8_t xoa_immutable; 454 uint8_t xoa_appendonly; 455 uint8_t xoa_nodump; 456 uint8_t xoa_settable; 457 uint8_t xoa_opaque; 458 uint8_t xoa_av_quarantined; 459 uint8_t xoa_av_modified; 460 uint8_t xoa_av_scanstamp[AV_SCANSTAMP_SZ]; 461 uint8_t xoa_reparse; 462 uint8_t xoa_offline; 463 uint8_t xoa_sparse; 464} xoptattr_t; 465 466typedef struct vattr { 467 uint_t va_mask; /* bit-mask of attributes */ 468 u_offset_t va_size; /* file size in bytes */ 469} vattr_t; 470 471 472typedef struct xvattr { 473 vattr_t xva_vattr; /* Embedded vattr structure */ 474 uint32_t xva_magic; /* Magic Number */ 475 uint32_t xva_mapsize; /* Size of attr bitmap (32-bit words) */ 476 uint32_t *xva_rtnattrmapp; /* Ptr to xva_rtnattrmap[] */ 477 uint32_t xva_reqattrmap[XVA_MAPSIZE]; /* Requested attrs */ 478 uint32_t xva_rtnattrmap[XVA_MAPSIZE]; /* Returned attrs */ 479 xoptattr_t xva_xoptattrs; /* Optional attributes */ 480} xvattr_t; 481 482typedef struct vsecattr { 483 uint_t vsa_mask; /* See below */ 484 int vsa_aclcnt; /* ACL entry count */ 485 void *vsa_aclentp; /* pointer to ACL entries */ 486 int vsa_dfaclcnt; /* default ACL entry count */ 487 void *vsa_dfaclentp; /* pointer to default ACL entries */ 488 size_t vsa_aclentsz; /* ACE size in bytes of vsa_aclentp */ 489} vsecattr_t; 490 491#define AT_TYPE 0x00001 492#define AT_MODE 0x00002 493#define AT_UID 0x00004 494#define AT_GID 0x00008 495#define AT_FSID 0x00010 496#define AT_NODEID 0x00020 497#define AT_NLINK 0x00040 498#define AT_SIZE 0x00080 499#define AT_ATIME 0x00100 500#define AT_MTIME 0x00200 501#define AT_CTIME 0x00400 502#define AT_RDEV 0x00800 503#define AT_BLKSIZE 0x01000 504#define AT_NBLOCKS 0x02000 505#define AT_SEQ 0x08000 506#define AT_XVATTR 0x10000 507 508#define CRCREAT 0 509 510extern int fop_getattr(vnode_t *vp, vattr_t *vap); 511 512#define VOP_CLOSE(vp, f, c, o, cr, ct) 0 513#define VOP_PUTPAGE(vp, of, sz, fl, cr, ct) 0 514#define VOP_GETATTR(vp, vap, cr) fop_getattr((vp), (vap)); 515 516#define VOP_FSYNC(vp, f, cr, ct) fsync((vp)->v_fd) 517 518#define VN_RELE(vp) vn_close(vp, 0, NULL, NULL) 519#define VN_RELE_ASYNC(vp, taskq) vn_close(vp, 0, NULL, NULL) 520 521#define vn_lock(vp, type) 522#define VOP_UNLOCK(vp, type) 523 524extern int vn_open(char *path, int x1, int oflags, int mode, vnode_t **vpp, 525 int x2, int x3); 526extern int vn_openat(char *path, int x1, int oflags, int mode, vnode_t **vpp, 527 int x2, int x3, vnode_t *vp, int fd); 528extern int vn_rdwr(int uio, vnode_t *vp, void *addr, ssize_t len, 529 offset_t offset, int x1, int x2, rlim64_t x3, void *x4, ssize_t *residp); 530extern void vn_close(vnode_t *vp, int openflag, cred_t *cr, kthread_t *td); 531 532#define vn_remove(path, x1, x2) remove(path) 533#define vn_rename(from, to, seg) rename((from), (to)) 534#define vn_is_readonly(vp) B_FALSE 535 536extern vnode_t *rootdir; 537 538#include <sys/file.h> /* for FREAD, FWRITE, etc */ 539#define FTRUNC O_TRUNC 540 541/* 542 * Random stuff 543 */ 544#define ddi_get_lbolt() (gethrtime() >> 23) 545#define ddi_get_lbolt64() (gethrtime() >> 23) 546#define hz 119 /* frequency when using gethrtime() >> 23 for lbolt */ 547 548extern void delay(clock_t ticks); 549 550#define SEC_TO_TICK(sec) ((sec) * hz) 551#define NSEC_TO_TICK(nsec) ((nsec) / (NANOSEC / hz)) 552 553#define gethrestime_sec() time(NULL) 554#define gethrestime(t) \ 555 do {\ 556 (t)->tv_sec = gethrestime_sec();\ 557 (t)->tv_nsec = 0;\ 558 } while (0); 559 560#define max_ncpus 64 561 562#define minclsyspri 60 563#define maxclsyspri 99 564 565#define CPU_SEQID (thr_self() & (max_ncpus - 1)) 566 567#define kcred NULL 568#define CRED() NULL 569 570#ifndef ptob 571#define ptob(x) ((x) * PAGESIZE) 572#endif 573 574extern uint64_t physmem; 575 576extern int highbit64(uint64_t i); 577extern int random_get_bytes(uint8_t *ptr, size_t len); 578extern int random_get_pseudo_bytes(uint8_t *ptr, size_t len); 579 580extern void kernel_init(int); 581extern void kernel_fini(void); 582 583struct spa; 584extern void nicenum(uint64_t num, char *buf); 585extern void show_pool_stats(struct spa *); 586extern int set_global_var(char *arg); 587 588typedef struct callb_cpr { 589 kmutex_t *cc_lockp; 590} callb_cpr_t; 591 592#define CALLB_CPR_INIT(cp, lockp, func, name) { \ 593 (cp)->cc_lockp = lockp; \ 594} 595 596#define CALLB_CPR_SAFE_BEGIN(cp) { \ 597 ASSERT(MUTEX_HELD((cp)->cc_lockp)); \ 598} 599 600#define CALLB_CPR_SAFE_END(cp, lockp) { \ 601 ASSERT(MUTEX_HELD((cp)->cc_lockp)); \ 602} 603 604#define CALLB_CPR_EXIT(cp) { \ 605 ASSERT(MUTEX_HELD((cp)->cc_lockp)); \ 606 mutex_exit((cp)->cc_lockp); \ 607} 608 609#define zone_dataset_visible(x, y) (1) 610#define INGLOBALZONE(z) (1) 611 612extern char *kmem_asprintf(const char *fmt, ...); 613#define strfree(str) kmem_free((str), strlen(str) + 1) 614 615/* 616 * Hostname information 617 */ 618extern struct utsname utsname; 619extern char hw_serial[]; /* for userland-emulated hostid access */ 620extern int ddi_strtoul(const char *str, char **nptr, int base, 621 unsigned long *result); 622 623extern int ddi_strtoull(const char *str, char **nptr, int base, 624 u_longlong_t *result); 625 626/* ZFS Boot Related stuff. */ 627 628struct _buf { 629 intptr_t _fd; 630}; 631 632struct bootstat { 633 uint64_t st_size; 634}; 635 636typedef struct ace_object { 637 uid_t a_who; 638 uint32_t a_access_mask; 639 uint16_t a_flags; 640 uint16_t a_type; 641 uint8_t a_obj_type[16]; 642 uint8_t a_inherit_obj_type[16]; 643} ace_object_t; 644 645 646#define ACE_ACCESS_ALLOWED_OBJECT_ACE_TYPE 0x05 647#define ACE_ACCESS_DENIED_OBJECT_ACE_TYPE 0x06 648#define ACE_SYSTEM_AUDIT_OBJECT_ACE_TYPE 0x07 649#define ACE_SYSTEM_ALARM_OBJECT_ACE_TYPE 0x08 650 651extern struct _buf *kobj_open_file(char *name); 652extern int kobj_read_file(struct _buf *file, char *buf, unsigned size, 653 unsigned off); 654extern void kobj_close_file(struct _buf *file); 655extern int kobj_get_filesize(struct _buf *file, uint64_t *size); 656extern int zfs_secpolicy_snapshot_perms(const char *name, cred_t *cr); 657extern int zfs_secpolicy_rename_perms(const char *from, const char *to, 658 cred_t *cr); 659extern int zfs_secpolicy_destroy_perms(const char *name, cred_t *cr); 660extern zoneid_t getzoneid(void); 661/* Random compatibility stuff. */ 662#define pwrite64(d, p, n, o) pwrite(d, p, n, o) 663#define readdir64(d) readdir(d) 664#define SIGPENDING(td) (0) 665#define root_mount_wait() do { } while (0) 666#define root_mounted() (1) 667 668struct file { 669 void *dummy; 670}; 671 672#define FCREAT O_CREAT 673#define FOFFMAX 0x0 674 675/* SID stuff */ 676typedef struct ksiddomain { 677 uint_t kd_ref; 678 uint_t kd_len; 679 char *kd_name; 680} ksiddomain_t; 681 682ksiddomain_t *ksid_lookupdomain(const char *); 683void ksiddomain_rele(ksiddomain_t *); 684 685typedef uint32_t idmap_rid_t; 686 687#define DDI_SLEEP KM_SLEEP 688#define ddi_log_sysevent(_a, _b, _c, _d, _e, _f, _g) (0) 689 690#define SX_SYSINIT(name, lock, desc) 691 692#define SYSCTL_HANDLER_ARGS struct sysctl_oid *oidp, void *arg1, \ 693 intptr_t arg2, struct sysctl_req *req 694 695/* 696 * This describes the access space for a sysctl request. This is needed 697 * so that we can use the interface from the kernel or from user-space. 698 */ 699struct sysctl_req { 700 struct thread *td; /* used for access checking */ 701 int lock; /* wiring state */ 702 void *oldptr; 703 size_t oldlen; 704 size_t oldidx; 705 int (*oldfunc)(struct sysctl_req *, const void *, size_t); 706 void *newptr; 707 size_t newlen; 708 size_t newidx; 709 int (*newfunc)(struct sysctl_req *, void *, size_t); 710 size_t validlen; 711 int flags; 712}; 713 714SLIST_HEAD(sysctl_oid_list, sysctl_oid); 715 716/* 717 * This describes one "oid" in the MIB tree. Potentially more nodes can 718 * be hidden behind it, expanded by the handler. 719 */ 720struct sysctl_oid { 721 struct sysctl_oid_list *oid_parent; 722 SLIST_ENTRY(sysctl_oid) oid_link; 723 int oid_number; 724 u_int oid_kind; 725 void *oid_arg1; 726 intptr_t oid_arg2; 727 const char *oid_name; 728 int (*oid_handler)(SYSCTL_HANDLER_ARGS); 729 const char *oid_fmt; 730 int oid_refcnt; 731 u_int oid_running; 732 const char *oid_descr; 733}; 734 735#define SYSCTL_DECL(...) 736#define SYSCTL_NODE(...) 737#define SYSCTL_INT(...) 738#define SYSCTL_UINT(...) 739#define SYSCTL_ULONG(...) 740#define SYSCTL_PROC(...) 741#define SYSCTL_QUAD(...) 742#define SYSCTL_UQUAD(...) 743#ifdef TUNABLE_INT 744#undef TUNABLE_INT 745#undef TUNABLE_ULONG 746#undef TUNABLE_QUAD 747#endif 748#define TUNABLE_INT(...) 749#define TUNABLE_ULONG(...) 750#define TUNABLE_QUAD(...) 751 752int sysctl_handle_64(SYSCTL_HANDLER_ARGS); 753 754/* Errors */ 755 756#ifndef ERESTART 757#define ERESTART (-1) 758#endif 759 760#ifdef illumos 761/* 762 * Cyclic information 763 */ 764extern kmutex_t cpu_lock; 765 766typedef uintptr_t cyclic_id_t; 767typedef uint16_t cyc_level_t; 768typedef void (*cyc_func_t)(void *); 769 770#define CY_LOW_LEVEL 0 771#define CY_INFINITY INT64_MAX 772#define CYCLIC_NONE ((cyclic_id_t)0) 773 774typedef struct cyc_time { 775 hrtime_t cyt_when; 776 hrtime_t cyt_interval; 777} cyc_time_t; 778 779typedef struct cyc_handler { 780 cyc_func_t cyh_func; 781 void *cyh_arg; 782 cyc_level_t cyh_level; 783} cyc_handler_t; 784 785extern cyclic_id_t cyclic_add(cyc_handler_t *, cyc_time_t *); 786extern void cyclic_remove(cyclic_id_t); 787extern int cyclic_reprogram(cyclic_id_t, hrtime_t); 788#endif /* illumos */ 789 790#ifdef illumos 791/* 792 * Buf structure 793 */ 794#define B_BUSY 0x0001 795#define B_DONE 0x0002 796#define B_ERROR 0x0004 797#define B_READ 0x0040 /* read when I/O occurs */ 798#define B_WRITE 0x0100 /* non-read pseudo-flag */ 799 800typedef struct buf { 801 int b_flags; 802 size_t b_bcount; 803 union { 804 caddr_t b_addr; 805 } b_un; 806 807 lldaddr_t _b_blkno; 808#define b_lblkno _b_blkno._f 809 size_t b_resid; 810 size_t b_bufsize; 811 int (*b_iodone)(struct buf *); 812 int b_error; 813 void *b_private; 814} buf_t; 815 816extern void bioinit(buf_t *); 817extern void biodone(buf_t *); 818extern void bioerror(buf_t *, int); 819extern int geterror(buf_t *); 820#endif 821 822#ifdef __cplusplus 823} 824#endif 825 826#endif /* _SYS_ZFS_CONTEXT_H */ 827