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, 2014 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 <sys/debug.h> 70 #include <sys/note.h> 71 #include <sys/types.h> 72 #include <sys/cred.h> 73 #include <sys/atomic.h> 74 #include <sys/sysmacros.h> 75 #include <sys/bitmap.h> 76 #include <sys/resource.h> 77 #include <sys/byteorder.h> 78 #include <sys/list.h> 79 #include <sys/time.h> 80 #include <sys/uio.h> 81 #include <sys/mntent.h> 82 #include <sys/mnttab.h> 83 #include <sys/zfs_debug.h> 84 #include <sys/sdt.h> 85 #include <sys/kstat.h> 86 #include <sys/u8_textprep.h> 87 #include <sys/kernel.h> 88 #include <sys/disk.h> 89 #include <sys/sysevent.h> 90 #include <sys/sysevent/eventdefs.h> 91 #include <sys/sysevent/dev.h> 92 #include <machine/atomic.h> 93 #include <sys/debug.h> 94 #ifdef illumos 95 #include "zfs.h" 96 #endif 97 98 #define ZFS_EXPORTS_PATH "/etc/zfs/exports" 99 100 /* 101 * Debugging 102 */ 103 104 /* 105 * Note that we are not using the debugging levels. 106 */ 107 108 #define CE_CONT 0 /* continuation */ 109 #define CE_NOTE 1 /* notice */ 110 #define CE_WARN 2 /* warning */ 111 #define CE_PANIC 3 /* panic */ 112 #define CE_IGNORE 4 /* print nothing */ 113 114 /* 115 * ZFS debugging 116 */ 117 118 #define ZFS_LOG(...) do { } while (0) 119 120 typedef u_longlong_t rlim64_t; 121 #define RLIM64_INFINITY ((rlim64_t)-3) 122 123 #ifdef ZFS_DEBUG 124 extern void dprintf_setup(int *argc, char **argv); 125 #endif /* ZFS_DEBUG */ 126 127 extern void cmn_err(int, const char *, ...); 128 extern void vcmn_err(int, const char *, __va_list); 129 extern void panic(const char *, ...); 130 extern void vpanic(const char *, __va_list); 131 132 #define fm_panic panic 133 134 extern int aok; 135 136 /* 137 * DTrace SDT probes have different signatures in userland than they do in 138 * the kernel. If they're being used in kernel code, re-define them out of 139 * existence for their counterparts in libzpool. 140 * 141 * Here's an example of how to use the set-error probes in userland: 142 * zfs$target:::set-error /arg0 == EBUSY/ {stack();} 143 * 144 * Here's an example of how to use DTRACE_PROBE probes in userland: 145 * If there is a probe declared as follows: 146 * DTRACE_PROBE2(zfs__probe_name, uint64_t, blkid, dnode_t *, dn); 147 * Then you can use it as follows: 148 * zfs$target:::probe2 /copyinstr(arg0) == "zfs__probe_name"/ 149 * {printf("%u %p\n", arg1, arg2);} 150 */ 151 152 #ifdef DTRACE_PROBE 153 #undef DTRACE_PROBE 154 #endif /* DTRACE_PROBE */ 155 #ifdef illumos 156 #define DTRACE_PROBE(a) \ 157 ZFS_PROBE0(#a) 158 #endif 159 160 #ifdef DTRACE_PROBE1 161 #undef DTRACE_PROBE1 162 #endif /* DTRACE_PROBE1 */ 163 #ifdef illumos 164 #define DTRACE_PROBE1(a, b, c) \ 165 ZFS_PROBE1(#a, (unsigned long)c) 166 #endif 167 168 #ifdef DTRACE_PROBE2 169 #undef DTRACE_PROBE2 170 #endif /* DTRACE_PROBE2 */ 171 #ifdef illumos 172 #define DTRACE_PROBE2(a, b, c, d, e) \ 173 ZFS_PROBE2(#a, (unsigned long)c, (unsigned long)e) 174 #endif 175 176 #ifdef DTRACE_PROBE3 177 #undef DTRACE_PROBE3 178 #endif /* DTRACE_PROBE3 */ 179 #ifdef illumos 180 #define DTRACE_PROBE3(a, b, c, d, e, f, g) \ 181 ZFS_PROBE3(#a, (unsigned long)c, (unsigned long)e, (unsigned long)g) 182 #endif 183 184 #ifdef DTRACE_PROBE4 185 #undef DTRACE_PROBE4 186 #endif /* DTRACE_PROBE4 */ 187 #ifdef illumos 188 #define DTRACE_PROBE4(a, b, c, d, e, f, g, h, i) \ 189 ZFS_PROBE4(#a, (unsigned long)c, (unsigned long)e, (unsigned long)g, \ 190 (unsigned long)i) 191 #endif 192 193 #ifdef illumos 194 /* 195 * We use the comma operator so that this macro can be used without much 196 * additional code. For example, "return (EINVAL);" becomes 197 * "return (SET_ERROR(EINVAL));". Note that the argument will be evaluated 198 * twice, so it should not have side effects (e.g. something like: 199 * "return (SET_ERROR(log_error(EINVAL, info)));" would log the error twice). 200 */ 201 #define SET_ERROR(err) (ZFS_SET_ERROR(err), err) 202 #else /* !illumos */ 203 204 #define DTRACE_PROBE(a) ((void)0) 205 #define DTRACE_PROBE1(a, b, c) ((void)0) 206 #define DTRACE_PROBE2(a, b, c, d, e) ((void)0) 207 #define DTRACE_PROBE3(a, b, c, d, e, f, g) ((void)0) 208 #define DTRACE_PROBE4(a, b, c, d, e, f, g, h, i) ((void)0) 209 210 #define SET_ERROR(err) (err) 211 #endif /* !illumos */ 212 213 /* 214 * Threads 215 */ 216 #define curthread ((void *)(uintptr_t)thr_self()) 217 218 #define kpreempt(x) sched_yield() 219 220 typedef struct kthread kthread_t; 221 222 #define thread_create(stk, stksize, func, arg, len, pp, state, pri) \ 223 zk_thread_create(func, arg) 224 #define thread_exit() thr_exit(NULL) 225 #define thread_join(t) panic("libzpool cannot join threads") 226 227 #define newproc(f, a, cid, pri, ctp, pid) (ENOSYS) 228 229 /* in libzpool, p0 exists only to have its address taken */ 230 struct proc { 231 uintptr_t this_is_never_used_dont_dereference_it; 232 }; 233 234 extern struct proc p0; 235 #define curproc (&p0) 236 237 #define PS_NONE -1 238 239 extern kthread_t *zk_thread_create(void (*func)(), void *arg); 240 241 #define issig(why) (FALSE) 242 #define ISSIG(thr, why) (FALSE) 243 244 /* 245 * Mutexes 246 */ 247 typedef struct kmutex { 248 void *m_owner; 249 boolean_t initialized; 250 mutex_t m_lock; 251 } kmutex_t; 252 253 #define MUTEX_DEFAULT USYNC_THREAD 254 #undef MUTEX_HELD 255 #undef MUTEX_NOT_HELD 256 #define MUTEX_HELD(m) ((m)->m_owner == curthread) 257 #define MUTEX_NOT_HELD(m) (!MUTEX_HELD(m)) 258 #define _mutex_held(m) pthread_mutex_isowned_np(m) 259 260 /* 261 * Argh -- we have to get cheesy here because the kernel and userland 262 * have different signatures for the same routine. 263 */ 264 //extern int _mutex_init(mutex_t *mp, int type, void *arg); 265 //extern int _mutex_destroy(mutex_t *mp); 266 //extern int _mutex_owned(mutex_t *mp); 267 268 #define mutex_init(mp, b, c, d) zmutex_init((kmutex_t *)(mp)) 269 #define mutex_destroy(mp) zmutex_destroy((kmutex_t *)(mp)) 270 #define mutex_owned(mp) zmutex_owned((kmutex_t *)(mp)) 271 272 extern void zmutex_init(kmutex_t *mp); 273 extern void zmutex_destroy(kmutex_t *mp); 274 extern int zmutex_owned(kmutex_t *mp); 275 extern void mutex_enter(kmutex_t *mp); 276 extern void mutex_exit(kmutex_t *mp); 277 extern int mutex_tryenter(kmutex_t *mp); 278 extern void *mutex_owner(kmutex_t *mp); 279 280 /* 281 * RW locks 282 */ 283 typedef struct krwlock { 284 int rw_count; 285 void *rw_owner; 286 boolean_t initialized; 287 rwlock_t rw_lock; 288 } krwlock_t; 289 290 typedef int krw_t; 291 292 #define RW_READER 0 293 #define RW_WRITER 1 294 #define RW_DEFAULT USYNC_THREAD 295 296 #undef RW_READ_HELD 297 #define RW_READ_HELD(x) ((x)->rw_owner == NULL && (x)->rw_count > 0) 298 299 #undef RW_WRITE_HELD 300 #define RW_WRITE_HELD(x) ((x)->rw_owner == curthread) 301 #define RW_LOCK_HELD(x) rw_lock_held(x) 302 303 #undef RW_LOCK_HELD 304 #define RW_LOCK_HELD(x) (RW_READ_HELD(x) || RW_WRITE_HELD(x)) 305 306 extern void rw_init(krwlock_t *rwlp, char *name, int type, void *arg); 307 extern void rw_destroy(krwlock_t *rwlp); 308 extern void rw_enter(krwlock_t *rwlp, krw_t rw); 309 extern int rw_tryenter(krwlock_t *rwlp, krw_t rw); 310 extern int rw_tryupgrade(krwlock_t *rwlp); 311 extern void rw_exit(krwlock_t *rwlp); 312 extern int rw_lock_held(krwlock_t *rwlp); 313 #define rw_downgrade(rwlp) do { } while (0) 314 315 extern uid_t crgetuid(cred_t *cr); 316 extern uid_t crgetruid(cred_t *cr); 317 extern gid_t crgetgid(cred_t *cr); 318 extern int crgetngroups(cred_t *cr); 319 extern gid_t *crgetgroups(cred_t *cr); 320 321 /* 322 * Condition variables 323 */ 324 typedef cond_t kcondvar_t; 325 326 #define CV_DEFAULT USYNC_THREAD 327 328 extern void cv_init(kcondvar_t *cv, char *name, int type, void *arg); 329 extern void cv_destroy(kcondvar_t *cv); 330 extern void cv_wait(kcondvar_t *cv, kmutex_t *mp); 331 extern clock_t cv_timedwait(kcondvar_t *cv, kmutex_t *mp, clock_t abstime); 332 extern clock_t cv_timedwait_hires(kcondvar_t *cvp, kmutex_t *mp, hrtime_t tim, 333 hrtime_t res, int flag); 334 extern void cv_signal(kcondvar_t *cv); 335 extern void cv_broadcast(kcondvar_t *cv); 336 337 /* 338 * Thread-specific data 339 */ 340 #define tsd_get(k) pthread_getspecific(k) 341 #define tsd_set(k, v) pthread_setspecific(k, v) 342 #define tsd_create(kp, d) pthread_key_create(kp, d) 343 #define tsd_destroy(kp) /* nothing */ 344 345 /* 346 * Kernel memory 347 */ 348 #define KM_SLEEP UMEM_NOFAIL 349 #define KM_PUSHPAGE KM_SLEEP 350 #define KM_NOSLEEP UMEM_DEFAULT 351 #define KMC_NODEBUG UMC_NODEBUG 352 #define KMC_NOTOUCH 0 /* not needed for userland caches */ 353 #define KM_NODEBUG 0 354 #define kmem_alloc(_s, _f) umem_alloc(_s, _f) 355 #define kmem_zalloc(_s, _f) umem_zalloc(_s, _f) 356 #define kmem_free(_b, _s) umem_free(_b, _s) 357 #define kmem_size() (physmem * PAGESIZE) 358 #define kmem_cache_create(_a, _b, _c, _d, _e, _f, _g, _h, _i) \ 359 umem_cache_create(_a, _b, _c, _d, _e, _f, _g, _h, _i) 360 #define kmem_cache_destroy(_c) umem_cache_destroy(_c) 361 #define kmem_cache_alloc(_c, _f) umem_cache_alloc(_c, _f) 362 #define kmem_cache_free(_c, _b) umem_cache_free(_c, _b) 363 #define kmem_debugging() 0 364 #define kmem_cache_reap_now(_c) /* nothing */ 365 #define kmem_cache_set_move(_c, _cb) /* nothing */ 366 #define POINTER_INVALIDATE(_pp) /* nothing */ 367 #define POINTER_IS_VALID(_p) 0 368 369 typedef umem_cache_t kmem_cache_t; 370 371 typedef enum kmem_cbrc { 372 KMEM_CBRC_YES, 373 KMEM_CBRC_NO, 374 KMEM_CBRC_LATER, 375 KMEM_CBRC_DONT_NEED, 376 KMEM_CBRC_DONT_KNOW 377 } kmem_cbrc_t; 378 379 /* 380 * Task queues 381 */ 382 typedef struct taskq taskq_t; 383 typedef uintptr_t taskqid_t; 384 typedef void (task_func_t)(void *); 385 386 typedef struct taskq_ent { 387 struct taskq_ent *tqent_next; 388 struct taskq_ent *tqent_prev; 389 task_func_t *tqent_func; 390 void *tqent_arg; 391 uintptr_t tqent_flags; 392 } taskq_ent_t; 393 394 #define TQENT_FLAG_PREALLOC 0x1 /* taskq_dispatch_ent used */ 395 396 #define TASKQ_PREPOPULATE 0x0001 397 #define TASKQ_CPR_SAFE 0x0002 /* Use CPR safe protocol */ 398 #define TASKQ_DYNAMIC 0x0004 /* Use dynamic thread scheduling */ 399 #define TASKQ_THREADS_CPU_PCT 0x0008 /* Scale # threads by # cpus */ 400 #define TASKQ_DC_BATCH 0x0010 /* Mark threads as batch */ 401 402 #define TQ_SLEEP KM_SLEEP /* Can block for memory */ 403 #define TQ_NOSLEEP KM_NOSLEEP /* cannot block for memory; may fail */ 404 #define TQ_NOQUEUE 0x02 /* Do not enqueue if can't dispatch */ 405 #define TQ_FRONT 0x08 /* Queue in front */ 406 407 408 extern taskq_t *system_taskq; 409 410 extern taskq_t *taskq_create(const char *, int, pri_t, int, int, uint_t); 411 #define taskq_create_proc(a, b, c, d, e, p, f) \ 412 (taskq_create(a, b, c, d, e, f)) 413 #define taskq_create_sysdc(a, b, d, e, p, dc, f) \ 414 (taskq_create(a, b, maxclsyspri, d, e, f)) 415 extern taskqid_t taskq_dispatch(taskq_t *, task_func_t, void *, uint_t); 416 extern void taskq_dispatch_ent(taskq_t *, task_func_t, void *, uint_t, 417 taskq_ent_t *); 418 extern void taskq_destroy(taskq_t *); 419 extern void taskq_wait(taskq_t *); 420 extern int taskq_member(taskq_t *, void *); 421 extern void system_taskq_init(void); 422 extern void system_taskq_fini(void); 423 424 #define taskq_dispatch_safe(tq, func, arg, flags, task) \ 425 taskq_dispatch((tq), (func), (arg), (flags)) 426 427 #define XVA_MAPSIZE 3 428 #define XVA_MAGIC 0x78766174 429 430 /* 431 * vnodes 432 */ 433 typedef struct vnode { 434 uint64_t v_size; 435 int v_fd; 436 char *v_path; 437 int v_dump_fd; 438 } vnode_t; 439 440 extern char *vn_dumpdir; 441 #define AV_SCANSTAMP_SZ 32 /* length of anti-virus scanstamp */ 442 443 typedef struct xoptattr { 444 timestruc_t xoa_createtime; /* Create time of file */ 445 uint8_t xoa_archive; 446 uint8_t xoa_system; 447 uint8_t xoa_readonly; 448 uint8_t xoa_hidden; 449 uint8_t xoa_nounlink; 450 uint8_t xoa_immutable; 451 uint8_t xoa_appendonly; 452 uint8_t xoa_nodump; 453 uint8_t xoa_settable; 454 uint8_t xoa_opaque; 455 uint8_t xoa_av_quarantined; 456 uint8_t xoa_av_modified; 457 uint8_t xoa_av_scanstamp[AV_SCANSTAMP_SZ]; 458 uint8_t xoa_reparse; 459 uint8_t xoa_offline; 460 uint8_t xoa_sparse; 461 } xoptattr_t; 462 463 typedef struct vattr { 464 uint_t va_mask; /* bit-mask of attributes */ 465 u_offset_t va_size; /* file size in bytes */ 466 } vattr_t; 467 468 469 typedef struct xvattr { 470 vattr_t xva_vattr; /* Embedded vattr structure */ 471 uint32_t xva_magic; /* Magic Number */ 472 uint32_t xva_mapsize; /* Size of attr bitmap (32-bit words) */ 473 uint32_t *xva_rtnattrmapp; /* Ptr to xva_rtnattrmap[] */ 474 uint32_t xva_reqattrmap[XVA_MAPSIZE]; /* Requested attrs */ 475 uint32_t xva_rtnattrmap[XVA_MAPSIZE]; /* Returned attrs */ 476 xoptattr_t xva_xoptattrs; /* Optional attributes */ 477 } xvattr_t; 478 479 typedef struct vsecattr { 480 uint_t vsa_mask; /* See below */ 481 int vsa_aclcnt; /* ACL entry count */ 482 void *vsa_aclentp; /* pointer to ACL entries */ 483 int vsa_dfaclcnt; /* default ACL entry count */ 484 void *vsa_dfaclentp; /* pointer to default ACL entries */ 485 size_t vsa_aclentsz; /* ACE size in bytes of vsa_aclentp */ 486 } vsecattr_t; 487 488 #define AT_TYPE 0x00001 489 #define AT_MODE 0x00002 490 #define AT_UID 0x00004 491 #define AT_GID 0x00008 492 #define AT_FSID 0x00010 493 #define AT_NODEID 0x00020 494 #define AT_NLINK 0x00040 495 #define AT_SIZE 0x00080 496 #define AT_ATIME 0x00100 497 #define AT_MTIME 0x00200 498 #define AT_CTIME 0x00400 499 #define AT_RDEV 0x00800 500 #define AT_BLKSIZE 0x01000 501 #define AT_NBLOCKS 0x02000 502 #define AT_SEQ 0x08000 503 #define AT_XVATTR 0x10000 504 505 #define CRCREAT 0 506 507 extern int fop_getattr(vnode_t *vp, vattr_t *vap); 508 509 #define VOP_CLOSE(vp, f, c, o, cr, ct) 0 510 #define VOP_PUTPAGE(vp, of, sz, fl, cr, ct) 0 511 #define VOP_GETATTR(vp, vap, cr) fop_getattr((vp), (vap)); 512 513 #define VOP_FSYNC(vp, f, cr, ct) fsync((vp)->v_fd) 514 515 #define VN_RELE(vp) vn_close(vp, 0, NULL, NULL) 516 #define VN_RELE_ASYNC(vp, taskq) vn_close(vp, 0, NULL, NULL) 517 518 #define vn_lock(vp, type) 519 #define VOP_UNLOCK(vp, type) 520 521 extern int vn_open(char *path, int x1, int oflags, int mode, vnode_t **vpp, 522 int x2, int x3); 523 extern int vn_openat(char *path, int x1, int oflags, int mode, vnode_t **vpp, 524 int x2, int x3, vnode_t *vp, int fd); 525 extern int vn_rdwr(int uio, vnode_t *vp, void *addr, ssize_t len, 526 offset_t offset, int x1, int x2, rlim64_t x3, void *x4, ssize_t *residp); 527 extern void vn_close(vnode_t *vp, int openflag, cred_t *cr, kthread_t *td); 528 529 #define vn_remove(path, x1, x2) remove(path) 530 #define vn_rename(from, to, seg) rename((from), (to)) 531 #define vn_is_readonly(vp) B_FALSE 532 533 extern vnode_t *rootdir; 534 535 #include <sys/file.h> /* for FREAD, FWRITE, etc */ 536 #define FTRUNC O_TRUNC 537 538 /* 539 * Random stuff 540 */ 541 #define ddi_get_lbolt() (gethrtime() >> 23) 542 #define ddi_get_lbolt64() (gethrtime() >> 23) 543 #define hz 119 /* frequency when using gethrtime() >> 23 for lbolt */ 544 545 extern void delay(clock_t ticks); 546 547 #define SEC_TO_TICK(sec) ((sec) * hz) 548 #define NSEC_TO_TICK(nsec) ((nsec) / (NANOSEC / hz)) 549 550 #define gethrestime_sec() time(NULL) 551 #define gethrestime(t) \ 552 do {\ 553 (t)->tv_sec = gethrestime_sec();\ 554 (t)->tv_nsec = 0;\ 555 } while (0); 556 557 #define max_ncpus 64 558 559 #define minclsyspri 60 560 #define maxclsyspri 99 561 562 #define CPU_SEQID (thr_self() & (max_ncpus - 1)) 563 564 #define kcred NULL 565 #define CRED() NULL 566 567 #ifndef ptob 568 #define ptob(x) ((x) * PAGESIZE) 569 #endif 570 571 extern uint64_t physmem; 572 573 extern int highbit64(uint64_t i); 574 extern int random_get_bytes(uint8_t *ptr, size_t len); 575 extern int random_get_pseudo_bytes(uint8_t *ptr, size_t len); 576 577 extern void kernel_init(int); 578 extern void kernel_fini(void); 579 580 struct spa; 581 extern void nicenum(uint64_t num, char *buf); 582 extern void show_pool_stats(struct spa *); 583 584 typedef struct callb_cpr { 585 kmutex_t *cc_lockp; 586 } callb_cpr_t; 587 588 #define CALLB_CPR_INIT(cp, lockp, func, name) { \ 589 (cp)->cc_lockp = lockp; \ 590 } 591 592 #define CALLB_CPR_SAFE_BEGIN(cp) { \ 593 ASSERT(MUTEX_HELD((cp)->cc_lockp)); \ 594 } 595 596 #define CALLB_CPR_SAFE_END(cp, lockp) { \ 597 ASSERT(MUTEX_HELD((cp)->cc_lockp)); \ 598 } 599 600 #define CALLB_CPR_EXIT(cp) { \ 601 ASSERT(MUTEX_HELD((cp)->cc_lockp)); \ 602 mutex_exit((cp)->cc_lockp); \ 603 } 604 605 #define zone_dataset_visible(x, y) (1) 606 #define INGLOBALZONE(z) (1) 607 608 extern char *kmem_asprintf(const char *fmt, ...); 609 #define strfree(str) kmem_free((str), strlen(str) + 1) 610 611 /* 612 * Hostname information 613 */ 614 extern struct utsname utsname; 615 extern char hw_serial[]; /* for userland-emulated hostid access */ 616 extern int ddi_strtoul(const char *str, char **nptr, int base, 617 unsigned long *result); 618 619 extern int ddi_strtoull(const char *str, char **nptr, int base, 620 u_longlong_t *result); 621 622 /* ZFS Boot Related stuff. */ 623 624 struct _buf { 625 intptr_t _fd; 626 }; 627 628 struct bootstat { 629 uint64_t st_size; 630 }; 631 632 typedef struct ace_object { 633 uid_t a_who; 634 uint32_t a_access_mask; 635 uint16_t a_flags; 636 uint16_t a_type; 637 uint8_t a_obj_type[16]; 638 uint8_t a_inherit_obj_type[16]; 639 } ace_object_t; 640 641 642 #define ACE_ACCESS_ALLOWED_OBJECT_ACE_TYPE 0x05 643 #define ACE_ACCESS_DENIED_OBJECT_ACE_TYPE 0x06 644 #define ACE_SYSTEM_AUDIT_OBJECT_ACE_TYPE 0x07 645 #define ACE_SYSTEM_ALARM_OBJECT_ACE_TYPE 0x08 646 647 extern struct _buf *kobj_open_file(char *name); 648 extern int kobj_read_file(struct _buf *file, char *buf, unsigned size, 649 unsigned off); 650 extern void kobj_close_file(struct _buf *file); 651 extern int kobj_get_filesize(struct _buf *file, uint64_t *size); 652 extern int zfs_secpolicy_snapshot_perms(const char *name, cred_t *cr); 653 extern int zfs_secpolicy_rename_perms(const char *from, const char *to, 654 cred_t *cr); 655 extern int zfs_secpolicy_destroy_perms(const char *name, cred_t *cr); 656 extern zoneid_t getzoneid(void); 657 /* Random compatibility stuff. */ 658 #define pwrite64(d, p, n, o) pwrite(d, p, n, o) 659 #define readdir64(d) readdir(d) 660 #define SIGPENDING(td) (0) 661 #define root_mount_wait() do { } while (0) 662 #define root_mounted() (1) 663 664 struct file { 665 void *dummy; 666 }; 667 668 #define FCREAT O_CREAT 669 #define FOFFMAX 0x0 670 671 /* SID stuff */ 672 typedef struct ksiddomain { 673 uint_t kd_ref; 674 uint_t kd_len; 675 char *kd_name; 676 } ksiddomain_t; 677 678 ksiddomain_t *ksid_lookupdomain(const char *); 679 void ksiddomain_rele(ksiddomain_t *); 680 681 typedef uint32_t idmap_rid_t; 682 683 #define DDI_SLEEP KM_SLEEP 684 #define ddi_log_sysevent(_a, _b, _c, _d, _e, _f, _g) (0) 685 686 #define SX_SYSINIT(name, lock, desc) 687 688 #define SYSCTL_HANDLER_ARGS struct sysctl_oid *oidp, void *arg1, \ 689 intptr_t arg2, struct sysctl_req *req 690 691 /* 692 * This describes the access space for a sysctl request. This is needed 693 * so that we can use the interface from the kernel or from user-space. 694 */ 695 struct sysctl_req { 696 struct thread *td; /* used for access checking */ 697 int lock; /* wiring state */ 698 void *oldptr; 699 size_t oldlen; 700 size_t oldidx; 701 int (*oldfunc)(struct sysctl_req *, const void *, size_t); 702 void *newptr; 703 size_t newlen; 704 size_t newidx; 705 int (*newfunc)(struct sysctl_req *, void *, size_t); 706 size_t validlen; 707 int flags; 708 }; 709 710 SLIST_HEAD(sysctl_oid_list, sysctl_oid); 711 712 /* 713 * This describes one "oid" in the MIB tree. Potentially more nodes can 714 * be hidden behind it, expanded by the handler. 715 */ 716 struct sysctl_oid { 717 struct sysctl_oid_list *oid_parent; 718 SLIST_ENTRY(sysctl_oid) oid_link; 719 int oid_number; 720 u_int oid_kind; 721 void *oid_arg1; 722 intptr_t oid_arg2; 723 const char *oid_name; 724 int (*oid_handler)(SYSCTL_HANDLER_ARGS); 725 const char *oid_fmt; 726 int oid_refcnt; 727 u_int oid_running; 728 const char *oid_descr; 729 }; 730 731 #define SYSCTL_DECL(...) 732 #define SYSCTL_NODE(...) 733 #define SYSCTL_INT(...) 734 #define SYSCTL_UINT(...) 735 #define SYSCTL_ULONG(...) 736 #define SYSCTL_PROC(...) 737 #define SYSCTL_QUAD(...) 738 #define SYSCTL_UQUAD(...) 739 #ifdef TUNABLE_INT 740 #undef TUNABLE_INT 741 #undef TUNABLE_ULONG 742 #undef TUNABLE_QUAD 743 #endif 744 #define TUNABLE_INT(...) 745 #define TUNABLE_ULONG(...) 746 #define TUNABLE_QUAD(...) 747 748 int sysctl_handle_64(SYSCTL_HANDLER_ARGS); 749 750 /* Errors */ 751 752 #ifndef ERESTART 753 #define ERESTART (-1) 754 #endif 755 756 #ifdef illumos 757 /* 758 * Cyclic information 759 */ 760 extern kmutex_t cpu_lock; 761 762 typedef uintptr_t cyclic_id_t; 763 typedef uint16_t cyc_level_t; 764 typedef void (*cyc_func_t)(void *); 765 766 #define CY_LOW_LEVEL 0 767 #define CY_INFINITY INT64_MAX 768 #define CYCLIC_NONE ((cyclic_id_t)0) 769 770 typedef struct cyc_time { 771 hrtime_t cyt_when; 772 hrtime_t cyt_interval; 773 } cyc_time_t; 774 775 typedef struct cyc_handler { 776 cyc_func_t cyh_func; 777 void *cyh_arg; 778 cyc_level_t cyh_level; 779 } cyc_handler_t; 780 781 extern cyclic_id_t cyclic_add(cyc_handler_t *, cyc_time_t *); 782 extern void cyclic_remove(cyclic_id_t); 783 extern int cyclic_reprogram(cyclic_id_t, hrtime_t); 784 #endif /* illumos */ 785 786 #ifdef illumos 787 /* 788 * Buf structure 789 */ 790 #define B_BUSY 0x0001 791 #define B_DONE 0x0002 792 #define B_ERROR 0x0004 793 #define B_READ 0x0040 /* read when I/O occurs */ 794 #define B_WRITE 0x0100 /* non-read pseudo-flag */ 795 796 typedef struct buf { 797 int b_flags; 798 size_t b_bcount; 799 union { 800 caddr_t b_addr; 801 } b_un; 802 803 lldaddr_t _b_blkno; 804 #define b_lblkno _b_blkno._f 805 size_t b_resid; 806 size_t b_bufsize; 807 int (*b_iodone)(struct buf *); 808 int b_error; 809 void *b_private; 810 } buf_t; 811 812 extern void bioinit(buf_t *); 813 extern void biodone(buf_t *); 814 extern void bioerror(buf_t *, int); 815 extern int geterror(buf_t *); 816 #endif 817 818 #ifdef __cplusplus 819 } 820 #endif 821 822 #endif /* _SYS_ZFS_CONTEXT_H */ 823