| | 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 2009 Sun Microsystems, Inc. All rights reserved. |
| | 23 | * Use is subject to license terms. |
| | 24 | */ |
| | 25 | /* |
| | 26 | * Copyright 2011 Nexenta Systems, Inc. All rights reserved. |
| | 27 | * Copyright (c) 2012, Joyent, Inc. All rights reserved. |
| | 28 | * Copyright (c) 2012, 2015 by Delphix. All rights reserved. |
| | 29 | */ |
| | 30 | |
| | 31 | #ifndef _SYS_ZFS_CONTEXT_H |
| | 32 | #define _SYS_ZFS_CONTEXT_H |
| | 33 | |
| | 34 | #ifdef __KERNEL__ |
| | 35 | |
| | 36 | #include <sys/note.h> |
| | 37 | #include <sys/types.h> |
| | 38 | #include <sys/t_lock.h> |
| | 39 | #include <sys/atomic.h> |
| | 40 | #include <sys/sysmacros.h> |
| | 41 | #include <sys/bitmap.h> |
| | 42 | #include <sys/cmn_err.h> |
| | 43 | #include <sys/kmem.h> |
| | 44 | #include <sys/kmem_cache.h> |
| | 45 | #include <sys/vmem.h> |
| | 46 | #include <sys/taskq.h> |
| | 47 | #include <sys/buf.h> |
| | 48 | #include <sys/param.h> |
| | 49 | #include <sys/systm.h> |
| | 50 | #include <sys/cpuvar.h> |
| | 51 | #include <sys/kobj.h> |
| | 52 | #include <sys/conf.h> |
| | 53 | #include <sys/disp.h> |
| | 54 | #include <sys/debug.h> |
| | 55 | #include <sys/random.h> |
| | 56 | #include <sys/byteorder.h> |
| | 57 | #include <sys/systm.h> |
| | 58 | #include <sys/list.h> |
| | 59 | #include <sys/uio_impl.h> |
| | 60 | #include <sys/dirent.h> |
| | 61 | #include <sys/time.h> |
| | 62 | #include <vm/seg_kmem.h> |
| | 63 | #include <sys/zone.h> |
| | 64 | #include <sys/sdt.h> |
| | 65 | #include <sys/kstat.h> |
| | 66 | #include <sys/zfs_debug.h> |
| | 67 | #include <sys/sysevent.h> |
| | 68 | #include <sys/sysevent/eventdefs.h> |
| | 69 | #include <sys/zfs_delay.h> |
| | 70 | #include <sys/sunddi.h> |
| | 71 | #include <sys/ctype.h> |
| | 72 | #include <sys/disp.h> |
| | 73 | #include <sys/trace.h> |
| | 74 | #include <linux/dcache_compat.h> |
| | 75 | #include <linux/utsname_compat.h> |
| | 76 | |
| | 77 | #else /* _KERNEL */ |
| | 78 | |
| | 79 | #define _SYS_MUTEX_H |
| | 80 | #define _SYS_RWLOCK_H |
| | 81 | #define _SYS_CONDVAR_H |
| | 82 | #define _SYS_SYSTM_H |
| | 83 | #define _SYS_T_LOCK_H |
| | 84 | #define _SYS_VNODE_H |
| | 85 | #define _SYS_VFS_H |
| | 86 | #define _SYS_SUNDDI_H |
| | 87 | #define _SYS_CALLB_H |
| | 88 | |
| | 89 | #include <stdio.h> |
| | 90 | #include <stdlib.h> |
| | 91 | #include <stddef.h> |
| | 92 | #include <stdarg.h> |
| | 93 | #include <fcntl.h> |
| | 94 | #include <unistd.h> |
| | 95 | #include <errno.h> |
| | 96 | #include <string.h> |
| | 97 | #include <strings.h> |
| | 98 | #include <pthread.h> |
| | 99 | #include <synch.h> |
| | 100 | #include <assert.h> |
| | 101 | #include <alloca.h> |
| | 102 | #include <umem.h> |
| | 103 | #include <limits.h> |
| | 104 | #include <atomic.h> |
| | 105 | #include <dirent.h> |
| | 106 | #include <time.h> |
| | 107 | #include <ctype.h> |
| | 108 | #include <signal.h> |
| | 109 | #include <sys/mman.h> |
| | 110 | #include <sys/note.h> |
| | 111 | #include <sys/types.h> |
| | 112 | #include <sys/cred.h> |
| | 113 | #include <sys/sysmacros.h> |
| | 114 | #include <sys/bitmap.h> |
| | 115 | #include <sys/resource.h> |
| | 116 | #include <sys/byteorder.h> |
| | 117 | #include <sys/list.h> |
| | 118 | #include <sys/uio.h> |
| | 119 | #include <sys/zfs_debug.h> |
| | 120 | #include <sys/sdt.h> |
| | 121 | #include <sys/kstat.h> |
| | 122 | #include <sys/u8_textprep.h> |
| | 123 | #include <sys/sysevent.h> |
| | 124 | #include <sys/sysevent/eventdefs.h> |
| | 125 | #include <sys/sunddi.h> |
| | 126 | #include <sys/debug.h> |
| | 127 | #include <sys/utsname.h> |
| | 128 | |
| | 129 | /* |
| | 130 | * Stack |
| | 131 | */ |
| | 132 | |
| | 133 | #define noinline __attribute__((noinline)) |
| | 134 | #define likely(x) __builtin_expect((x), 1) |
| | 135 | |
| | 136 | /* |
| | 137 | * Debugging |
| | 138 | */ |
| | 139 | |
| | 140 | /* |
| | 141 | * Note that we are not using the debugging levels. |
| | 142 | */ |
| | 143 | |
| | 144 | #define CE_CONT 0 /* continuation */ |
| | 145 | #define CE_NOTE 1 /* notice */ |
| | 146 | #define CE_WARN 2 /* warning */ |
| | 147 | #define CE_PANIC 3 /* panic */ |
| | 148 | #define CE_IGNORE 4 /* print nothing */ |
| | 149 | |
| | 150 | /* |
| | 151 | * ZFS debugging |
| | 152 | */ |
| | 153 | |
| | 154 | extern void dprintf_setup(int *argc, char **argv); |
| | 155 | |
| | 156 | extern void cmn_err(int, const char *, ...); |
| | 157 | extern void vcmn_err(int, const char *, va_list); |
| | 158 | extern void panic(const char *, ...); |
| | 159 | extern void vpanic(const char *, va_list); |
| | 160 | |
| | 161 | #define fm_panic panic |
| | 162 | |
| | 163 | extern int aok; |
| | 164 | |
| | 165 | /* |
| | 166 | * DTrace SDT probes have different signatures in userland than they do in |
| | 167 | * the kernel. If they're being used in kernel code, re-define them out of |
| | 168 | * existence for their counterparts in libzpool. |
| | 169 | * |
| | 170 | * Here's an example of how to use the set-error probes in userland: |
| | 171 | * zfs$target:::set-error /arg0 == EBUSY/ {stack();} |
| | 172 | * |
| | 173 | * Here's an example of how to use DTRACE_PROBE probes in userland: |
| | 174 | * If there is a probe declared as follows: |
| | 175 | * DTRACE_PROBE2(zfs__probe_name, uint64_t, blkid, dnode_t *, dn); |
| | 176 | * Then you can use it as follows: |
| | 177 | * zfs$target:::probe2 /copyinstr(arg0) == "zfs__probe_name"/ |
| | 178 | * {printf("%u %p\n", arg1, arg2);} |
| | 179 | */ |
| | 180 | |
| | 181 | #ifdef DTRACE_PROBE |
| | 182 | #undef DTRACE_PROBE |
| | 183 | #endif /* DTRACE_PROBE */ |
| | 184 | #define DTRACE_PROBE(a) \ |
| | 185 | ZFS_PROBE0(#a) |
| | 186 | |
| | 187 | #ifdef DTRACE_PROBE1 |
| | 188 | #undef DTRACE_PROBE1 |
| | 189 | #endif /* DTRACE_PROBE1 */ |
| | 190 | #define DTRACE_PROBE1(a, b, c) \ |
| | 191 | ZFS_PROBE1(#a, (unsigned long)c) |
| | 192 | |
| | 193 | #ifdef DTRACE_PROBE2 |
| | 194 | #undef DTRACE_PROBE2 |
| | 195 | #endif /* DTRACE_PROBE2 */ |
| | 196 | #define DTRACE_PROBE2(a, b, c, d, e) \ |
| | 197 | ZFS_PROBE2(#a, (unsigned long)c, (unsigned long)e) |
| | 198 | |
| | 199 | #ifdef DTRACE_PROBE3 |
| | 200 | #undef DTRACE_PROBE3 |
| | 201 | #endif /* DTRACE_PROBE3 */ |
| | 202 | #define DTRACE_PROBE3(a, b, c, d, e, f, g) \ |
| | 203 | ZFS_PROBE3(#a, (unsigned long)c, (unsigned long)e, (unsigned long)g) |
| | 204 | |
| | 205 | #ifdef DTRACE_PROBE4 |
| | 206 | #undef DTRACE_PROBE4 |
| | 207 | #endif /* DTRACE_PROBE4 */ |
| | 208 | #define DTRACE_PROBE4(a, b, c, d, e, f, g, h, i) \ |
| | 209 | ZFS_PROBE4(#a, (unsigned long)c, (unsigned long)e, (unsigned long)g, \ |
| | 210 | (unsigned long)i) |
| | 211 | |
| | 212 | /* |
| | 213 | * We use the comma operator so that this macro can be used without much |
| | 214 | * additional code. For example, "return (EINVAL);" becomes |
| | 215 | * "return (SET_ERROR(EINVAL));". Note that the argument will be evaluated |
| | 216 | * twice, so it should not have side effects (e.g. something like: |
| | 217 | * "return (SET_ERROR(log_error(EINVAL, info)));" would log the error twice). |
| | 218 | */ |
| | 219 | #define SET_ERROR(err) (ZFS_SET_ERROR(err), err) |
| | 220 | |
| | 221 | /* |
| | 222 | * Threads. TS_STACK_MIN is dictated by the minimum allowed pthread stack |
| | 223 | * size. While TS_STACK_MAX is somewhat arbitrary, it was selected to be |
| | 224 | * large enough for the expected stack depth while small enough to avoid |
| | 225 | * exhausting address space with high thread counts. |
| | 226 | */ |
| | 227 | #define TS_MAGIC 0x72f158ab4261e538ull |
| | 228 | #define TS_RUN 0x00000002 |
| | 229 | #define TS_STACK_MIN MAX(PTHREAD_STACK_MIN, 32768) |
| | 230 | #define TS_STACK_MAX (256 * 1024) |
| | 231 | |
| | 232 | /* in libzpool, p0 exists only to have its address taken */ |
| | 233 | typedef struct proc { |
| | 234 | uintptr_t this_is_never_used_dont_dereference_it; |
| | 235 | } proc_t; |
| | 236 | |
| | 237 | extern struct proc p0; |
| | 238 | #define curproc (&p0) |
| | 239 | |
| | 240 | typedef void (*thread_func_t)(void *); |
| | 241 | typedef void (*thread_func_arg_t)(void *); |
| | 242 | typedef pthread_t kt_did_t; |
| | 243 | |
| | 244 | #define kpreempt(x) ((void)0) |
| | 245 | |
| | 246 | typedef struct kthread { |
| | 247 | kt_did_t t_tid; |
| | 248 | thread_func_t t_func; |
| | 249 | void * t_arg; |
| | 250 | pri_t t_pri; |
| | 251 | } kthread_t; |
| | 252 | |
| | 253 | #define curthread zk_thread_current() |
| | 254 | #define getcomm() "unknown" |
| | 255 | #define thread_exit zk_thread_exit |
| | 256 | #define thread_create(stk, stksize, func, arg, len, pp, state, pri) \ |
| | 257 | zk_thread_create(stk, stksize, (thread_func_t)func, arg, \ |
| | 258 | len, NULL, state, pri, PTHREAD_CREATE_DETACHED) |
| | 259 | #define thread_join(t) zk_thread_join(t) |
| | 260 | #define newproc(f, a, cid, pri, ctp, pid) (ENOSYS) |
| | 261 | |
| | 262 | extern kthread_t *zk_thread_current(void); |
| | 263 | extern void zk_thread_exit(void); |
| | 264 | extern kthread_t *zk_thread_create(caddr_t stk, size_t stksize, |
| | 265 | thread_func_t func, void *arg, size_t len, |
| | 266 | proc_t *pp, int state, pri_t pri, int detachstate); |
| | 267 | extern void zk_thread_join(kt_did_t tid); |
| | 268 | |
| | 269 | #define kpreempt_disable() ((void)0) |
| | 270 | #define kpreempt_enable() ((void)0) |
| | 271 | |
| | 272 | #define PS_NONE -1 |
| | 273 | |
| | 274 | #define issig(why) (FALSE) |
| | 275 | #define ISSIG(thr, why) (FALSE) |
| | 276 | |
| | 277 | /* |
| | 278 | * Mutexes |
| | 279 | */ |
| | 280 | #define MTX_MAGIC 0x9522f51362a6e326ull |
| | 281 | #define MTX_INIT ((void *)NULL) |
| | 282 | #define MTX_DEST ((void *)-1UL) |
| | 283 | |
| | 284 | typedef struct kmutex { |
| | 285 | void *m_owner; |
| | 286 | uint64_t m_magic; |
| | 287 | pthread_mutex_t m_lock; |
| | 288 | } kmutex_t; |
| | 289 | |
| | 290 | #define MUTEX_DEFAULT 0 |
| | 291 | #define MUTEX_NOLOCKDEP MUTEX_DEFAULT |
| | 292 | #define MUTEX_HELD(m) ((m)->m_owner == curthread) |
| | 293 | #define MUTEX_NOT_HELD(m) (!MUTEX_HELD(m)) |
| | 294 | |
| | 295 | extern void mutex_init(kmutex_t *mp, char *name, int type, void *cookie); |
| | 296 | extern void mutex_destroy(kmutex_t *mp); |
| | 297 | extern void mutex_enter(kmutex_t *mp); |
| | 298 | extern void mutex_exit(kmutex_t *mp); |
| | 299 | extern int mutex_tryenter(kmutex_t *mp); |
| | 300 | extern void *mutex_owner(kmutex_t *mp); |
| | 301 | extern int mutex_held(kmutex_t *mp); |
| | 302 | |
| | 303 | /* |
| | 304 | * RW locks |
| | 305 | */ |
| | 306 | #define RW_MAGIC 0x4d31fb123648e78aull |
| | 307 | #define RW_INIT ((void *)NULL) |
| | 308 | #define RW_DEST ((void *)-1UL) |
| | 309 | |
| | 310 | typedef struct krwlock { |
| | 311 | void *rw_owner; |
| | 312 | void *rw_wr_owner; |
| | 313 | uint64_t rw_magic; |
| | 314 | pthread_rwlock_t rw_lock; |
| | 315 | uint_t rw_readers; |
| | 316 | } krwlock_t; |
| | 317 | |
| | 318 | typedef int krw_t; |
| | 319 | |
| | 320 | #define RW_READER 0 |
| | 321 | #define RW_WRITER 1 |
| | 322 | #define RW_DEFAULT RW_READER |
| | 323 | #define RW_NOLOCKDEP RW_READER |
| | 324 | |
| | 325 | #define RW_READ_HELD(x) ((x)->rw_readers > 0) |
| | 326 | #define RW_WRITE_HELD(x) ((x)->rw_wr_owner == curthread) |
| | 327 | #define RW_LOCK_HELD(x) (RW_READ_HELD(x) || RW_WRITE_HELD(x)) |
| | 328 | |
| | 329 | #undef RW_LOCK_HELD |
| | 330 | #define RW_LOCK_HELD(x) (RW_READ_HELD(x) || RW_WRITE_HELD(x)) |
| | 331 | |
| | 332 | #undef RW_LOCK_HELD |
| | 333 | #define RW_LOCK_HELD(x) (RW_READ_HELD(x) || RW_WRITE_HELD(x)) |
| | 334 | |
| | 335 | extern void rw_init(krwlock_t *rwlp, char *name, int type, void *arg); |
| | 336 | extern void rw_destroy(krwlock_t *rwlp); |
| | 337 | extern void rw_enter(krwlock_t *rwlp, krw_t rw); |
| | 338 | extern int rw_tryenter(krwlock_t *rwlp, krw_t rw); |
| | 339 | extern int rw_tryupgrade(krwlock_t *rwlp); |
| | 340 | extern void rw_exit(krwlock_t *rwlp); |
| | 341 | #define rw_downgrade(rwlp) do { } while (0) |
| | 342 | |
| | 343 | extern uid_t crgetuid(cred_t *cr); |
| | 344 | extern uid_t crgetruid(cred_t *cr); |
| | 345 | extern gid_t crgetgid(cred_t *cr); |
| | 346 | extern int crgetngroups(cred_t *cr); |
| | 347 | extern gid_t *crgetgroups(cred_t *cr); |
| | 348 | |
| | 349 | /* |
| | 350 | * Condition variables |
| | 351 | */ |
| | 352 | #define CV_MAGIC 0xd31ea9a83b1b30c4ull |
| | 353 | |
| | 354 | typedef struct kcondvar { |
| | 355 | uint64_t cv_magic; |
| | 356 | pthread_cond_t cv; |
| | 357 | } kcondvar_t; |
| | 358 | |
| | 359 | #define CV_DEFAULT 0 |
| | 360 | #define CALLOUT_FLAG_ABSOLUTE 0x2 |
| | 361 | |
| | 362 | extern void cv_init(kcondvar_t *cv, char *name, int type, void *arg); |
| | 363 | extern void cv_destroy(kcondvar_t *cv); |
| | 364 | extern void cv_wait(kcondvar_t *cv, kmutex_t *mp); |
| | 365 | extern clock_t cv_timedwait(kcondvar_t *cv, kmutex_t *mp, clock_t abstime); |
| | 366 | extern clock_t cv_timedwait_hires(kcondvar_t *cvp, kmutex_t *mp, hrtime_t tim, |
| | 367 | hrtime_t res, int flag); |
| | 368 | extern void cv_signal(kcondvar_t *cv); |
| | 369 | extern void cv_broadcast(kcondvar_t *cv); |
| | 370 | #define cv_timedwait_sig(cv, mp, at) cv_timedwait(cv, mp, at) |
| | 371 | #define cv_wait_sig(cv, mp) cv_wait(cv, mp) |
| | 372 | #define cv_wait_io(cv, mp) cv_wait(cv, mp) |
| | 373 | #define cv_timedwait_sig_hires(cv, mp, t, r, f) \ |
| | 374 | cv_timedwait_hires(cv, mp, t, r, f) |
| | 375 | |
| | 376 | /* |
| | 377 | * Thread-specific data |
| | 378 | */ |
| | 379 | #define tsd_get(k) pthread_getspecific(k) |
| | 380 | #define tsd_set(k, v) pthread_setspecific(k, v) |
| | 381 | #define tsd_create(kp, d) pthread_key_create(kp, d) |
| | 382 | #define tsd_destroy(kp) /* nothing */ |
| | 383 | |
| | 384 | /* |
| | 385 | * Thread-specific data |
| | 386 | */ |
| | 387 | #define tsd_get(k) pthread_getspecific(k) |
| | 388 | #define tsd_set(k, v) pthread_setspecific(k, v) |
| | 389 | #define tsd_create(kp, d) pthread_key_create(kp, d) |
| | 390 | #define tsd_destroy(kp) /* nothing */ |
| | 391 | |
| | 392 | /* |
| | 393 | * kstat creation, installation and deletion |
| | 394 | */ |
| | 395 | extern kstat_t *kstat_create(const char *, int, |
| | 396 | const char *, const char *, uchar_t, ulong_t, uchar_t); |
| | 397 | extern void kstat_install(kstat_t *); |
| | 398 | extern void kstat_delete(kstat_t *); |
| | 399 | extern void kstat_waitq_enter(kstat_io_t *); |
| | 400 | extern void kstat_waitq_exit(kstat_io_t *); |
| | 401 | extern void kstat_runq_enter(kstat_io_t *); |
| | 402 | extern void kstat_runq_exit(kstat_io_t *); |
| | 403 | extern void kstat_waitq_to_runq(kstat_io_t *); |
| | 404 | extern void kstat_runq_back_to_waitq(kstat_io_t *); |
| | 405 | extern void kstat_set_raw_ops(kstat_t *ksp, |
| | 406 | int (*headers)(char *buf, size_t size), |
| | 407 | int (*data)(char *buf, size_t size, void *data), |
| | 408 | void *(*addr)(kstat_t *ksp, loff_t index)); |
| | 409 | |
| | 410 | /* |
| | 411 | * Kernel memory |
| | 412 | */ |
| | 413 | #define KM_SLEEP UMEM_NOFAIL |
| | 414 | #define KM_PUSHPAGE KM_SLEEP |
| | 415 | #define KM_NOSLEEP UMEM_DEFAULT |
| | 416 | #define KMC_NODEBUG UMC_NODEBUG |
| | 417 | #define KMC_KMEM 0x0 |
| | 418 | #define KMC_VMEM 0x0 |
| | 419 | #define kmem_alloc(_s, _f) umem_alloc(_s, _f) |
| | 420 | #define kmem_zalloc(_s, _f) umem_zalloc(_s, _f) |
| | 421 | #define kmem_free(_b, _s) umem_free(_b, _s) |
| | 422 | #define vmem_alloc(_s, _f) kmem_alloc(_s, _f) |
| | 423 | #define vmem_zalloc(_s, _f) kmem_zalloc(_s, _f) |
| | 424 | #define vmem_free(_b, _s) kmem_free(_b, _s) |
| | 425 | #define kmem_cache_create(_a, _b, _c, _d, _e, _f, _g, _h, _i) \ |
| | 426 | umem_cache_create(_a, _b, _c, _d, _e, _f, _g, _h, _i) |
| | 427 | #define kmem_cache_destroy(_c) umem_cache_destroy(_c) |
| | 428 | #define kmem_cache_alloc(_c, _f) umem_cache_alloc(_c, _f) |
| | 429 | #define kmem_cache_free(_c, _b) umem_cache_free(_c, _b) |
| | 430 | #define kmem_debugging() 0 |
| | 431 | #define kmem_cache_reap_now(_c) umem_cache_reap_now(_c); |
| | 432 | #define kmem_cache_set_move(_c, _cb) /* nothing */ |
| | 433 | #define vmem_qcache_reap(_v) /* nothing */ |
| | 434 | #define POINTER_INVALIDATE(_pp) /* nothing */ |
| | 435 | #define POINTER_IS_VALID(_p) 0 |
| | 436 | |
| | 437 | extern vmem_t *zio_arena; |
| | 438 | |
| | 439 | typedef umem_cache_t kmem_cache_t; |
| | 440 | |
| | 441 | typedef enum kmem_cbrc { |
| | 442 | KMEM_CBRC_YES, |
| | 443 | KMEM_CBRC_NO, |
| | 444 | KMEM_CBRC_LATER, |
| | 445 | KMEM_CBRC_DONT_NEED, |
| | 446 | KMEM_CBRC_DONT_KNOW |
| | 447 | } kmem_cbrc_t; |
| | 448 | |
| | 449 | /* |
| | 450 | * Task queues |
| | 451 | */ |
| | 452 | |
| | 453 | #define TASKQ_NAMELEN 31 |
| | 454 | |
| | 455 | typedef uintptr_t taskqid_t; |
| | 456 | typedef void (task_func_t)(void *); |
| | 457 | |
| | 458 | typedef struct taskq_ent { |
| | 459 | struct taskq_ent *tqent_next; |
| | 460 | struct taskq_ent *tqent_prev; |
| | 461 | task_func_t *tqent_func; |
| | 462 | void *tqent_arg; |
| | 463 | uintptr_t tqent_flags; |
| | 464 | } taskq_ent_t; |
| | 465 | |
| | 466 | typedef struct taskq { |
| | 467 | char tq_name[TASKQ_NAMELEN + 1]; |
| | 468 | kmutex_t tq_lock; |
| | 469 | krwlock_t tq_threadlock; |
| | 470 | kcondvar_t tq_dispatch_cv; |
| | 471 | kcondvar_t tq_wait_cv; |
| | 472 | kthread_t **tq_threadlist; |
| | 473 | int tq_flags; |
| | 474 | int tq_active; |
| | 475 | int tq_nthreads; |
| | 476 | int tq_nalloc; |
| | 477 | int tq_minalloc; |
| | 478 | int tq_maxalloc; |
| | 479 | kcondvar_t tq_maxalloc_cv; |
| | 480 | int tq_maxalloc_wait; |
| | 481 | taskq_ent_t *tq_freelist; |
| | 482 | taskq_ent_t tq_task; |
| | 483 | } taskq_t; |
| | 484 | |
| | 485 | #define TQENT_FLAG_PREALLOC 0x1 /* taskq_dispatch_ent used */ |
| | 486 | |
| | 487 | #define TASKQ_PREPOPULATE 0x0001 |
| | 488 | #define TASKQ_CPR_SAFE 0x0002 /* Use CPR safe protocol */ |
| | 489 | #define TASKQ_DYNAMIC 0x0004 /* Use dynamic thread scheduling */ |
| | 490 | #define TASKQ_THREADS_CPU_PCT 0x0008 /* Scale # threads by # cpus */ |
| | 491 | #define TASKQ_DC_BATCH 0x0010 /* Mark threads as batch */ |
| | 492 | |
| | 493 | #define TQ_SLEEP KM_SLEEP /* Can block for memory */ |
| | 494 | #define TQ_NOSLEEP KM_NOSLEEP /* cannot block for memory; may fail */ |
| | 495 | #define TQ_NOQUEUE 0x02 /* Do not enqueue if can't dispatch */ |
| | 496 | #define TQ_FRONT 0x08 /* Queue in front */ |
| | 497 | |
| | 498 | #define TASKQID_INVALID ((taskqid_t)0) |
| | 499 | |
| | 500 | extern taskq_t *system_taskq; |
| | 501 | extern taskq_t *system_delay_taskq; |
| | 502 | |
| | 503 | extern taskq_t *taskq_create(const char *, int, pri_t, int, int, uint_t); |
| | 504 | #define taskq_create_proc(a, b, c, d, e, p, f) \ |
| | 505 | (taskq_create(a, b, c, d, e, f)) |
| | 506 | #define taskq_create_sysdc(a, b, d, e, p, dc, f) \ |
| | 507 | (taskq_create(a, b, maxclsyspri, d, e, f)) |
| | 508 | extern taskqid_t taskq_dispatch(taskq_t *, task_func_t, void *, uint_t); |
| | 509 | extern taskqid_t taskq_dispatch_delay(taskq_t *, task_func_t, void *, uint_t, |
| | 510 | clock_t); |
| | 511 | extern void taskq_dispatch_ent(taskq_t *, task_func_t, void *, uint_t, |
| | 512 | taskq_ent_t *); |
| | 513 | extern int taskq_empty_ent(taskq_ent_t *); |
| | 514 | extern void taskq_init_ent(taskq_ent_t *); |
| | 515 | extern void taskq_destroy(taskq_t *); |
| | 516 | extern void taskq_wait(taskq_t *); |
| | 517 | extern void taskq_wait_id(taskq_t *, taskqid_t); |
| | 518 | extern void taskq_wait_outstanding(taskq_t *, taskqid_t); |
| | 519 | extern int taskq_member(taskq_t *, kthread_t *); |
| | 520 | extern int taskq_cancel_id(taskq_t *, taskqid_t); |
| | 521 | extern void system_taskq_init(void); |
| | 522 | extern void system_taskq_fini(void); |
| | 523 | |
| | 524 | #define XVA_MAPSIZE 3 |
| | 525 | #define XVA_MAGIC 0x78766174 |
| | 526 | |
| | 527 | /* |
| | 528 | * vnodes |
| | 529 | */ |
| | 530 | typedef struct vnode { |
| | 531 | uint64_t v_size; |
| | 532 | int v_fd; |
| | 533 | char *v_path; |
| | 534 | int v_dump_fd; |
| | 535 | } vnode_t; |
| | 536 | |
| | 537 | extern char *vn_dumpdir; |
| | 538 | #define AV_SCANSTAMP_SZ 32 /* length of anti-virus scanstamp */ |
| | 539 | |
| | 540 | typedef struct xoptattr { |
| | 541 | timestruc_t xoa_createtime; /* Create time of file */ |
| | 542 | uint8_t xoa_archive; |
| | 543 | uint8_t xoa_system; |
| | 544 | uint8_t xoa_readonly; |
| | 545 | uint8_t xoa_hidden; |
| | 546 | uint8_t xoa_nounlink; |
| | 547 | uint8_t xoa_immutable; |
| | 548 | uint8_t xoa_appendonly; |
| | 549 | uint8_t xoa_nodump; |
| | 550 | uint8_t xoa_settable; |
| | 551 | uint8_t xoa_opaque; |
| | 552 | uint8_t xoa_av_quarantined; |
| | 553 | uint8_t xoa_av_modified; |
| | 554 | uint8_t xoa_av_scanstamp[AV_SCANSTAMP_SZ]; |
| | 555 | uint8_t xoa_reparse; |
| | 556 | uint8_t xoa_offline; |
| | 557 | uint8_t xoa_sparse; |
| | 558 | } xoptattr_t; |
| | 559 | |
| | 560 | typedef struct vattr { |
| | 561 | uint_t va_mask; /* bit-mask of attributes */ |
| | 562 | u_offset_t va_size; /* file size in bytes */ |
| | 563 | } vattr_t; |
| | 564 | |
| | 565 | |
| | 566 | typedef struct xvattr { |
| | 567 | vattr_t xva_vattr; /* Embedded vattr structure */ |
| | 568 | uint32_t xva_magic; /* Magic Number */ |
| | 569 | uint32_t xva_mapsize; /* Size of attr bitmap (32-bit words) */ |
| | 570 | uint32_t *xva_rtnattrmapp; /* Ptr to xva_rtnattrmap[] */ |
| | 571 | uint32_t xva_reqattrmap[XVA_MAPSIZE]; /* Requested attrs */ |
| | 572 | uint32_t xva_rtnattrmap[XVA_MAPSIZE]; /* Returned attrs */ |
| | 573 | xoptattr_t xva_xoptattrs; /* Optional attributes */ |
| | 574 | } xvattr_t; |
| | 575 | |
| | 576 | typedef struct vsecattr { |
| | 577 | uint_t vsa_mask; /* See below */ |
| | 578 | int vsa_aclcnt; /* ACL entry count */ |
| | 579 | void *vsa_aclentp; /* pointer to ACL entries */ |
| | 580 | int vsa_dfaclcnt; /* default ACL entry count */ |
| | 581 | void *vsa_dfaclentp; /* pointer to default ACL entries */ |
| | 582 | size_t vsa_aclentsz; /* ACE size in bytes of vsa_aclentp */ |
| | 583 | } vsecattr_t; |
| | 584 | |
| | 585 | #define AT_TYPE 0x00001 |
| | 586 | #define AT_MODE 0x00002 |
| | 587 | #define AT_UID 0x00004 |
| | 588 | #define AT_GID 0x00008 |
| | 589 | #define AT_FSID 0x00010 |
| | 590 | #define AT_NODEID 0x00020 |
| | 591 | #define AT_NLINK 0x00040 |
| | 592 | #define AT_SIZE 0x00080 |
| | 593 | #define AT_ATIME 0x00100 |
| | 594 | #define AT_MTIME 0x00200 |
| | 595 | #define AT_CTIME 0x00400 |
| | 596 | #define AT_RDEV 0x00800 |
| | 597 | #define AT_BLKSIZE 0x01000 |
| | 598 | #define AT_NBLOCKS 0x02000 |
| | 599 | #define AT_SEQ 0x08000 |
| | 600 | #define AT_XVATTR 0x10000 |
| | 601 | |
| | 602 | #define CRCREAT 0 |
| | 603 | |
| | 604 | extern int fop_getattr(vnode_t *vp, vattr_t *vap); |
| | 605 | |
| | 606 | #define VOP_CLOSE(vp, f, c, o, cr, ct) vn_close(vp) |
| | 607 | #define VOP_PUTPAGE(vp, of, sz, fl, cr, ct) 0 |
| | 608 | #define VOP_GETATTR(vp, vap, fl, cr, ct) fop_getattr((vp), (vap)); |
| | 609 | |
| | 610 | #define VOP_FSYNC(vp, f, cr, ct) fsync((vp)->v_fd) |
| | 611 | |
| | 612 | #define VN_RELE(vp) vn_close(vp) |
| | 613 | |
| | 614 | extern int vn_open(char *path, int x1, int oflags, int mode, vnode_t **vpp, |
| | 615 | int x2, int x3); |
| | 616 | extern int vn_openat(char *path, int x1, int oflags, int mode, vnode_t **vpp, |
| | 617 | int x2, int x3, vnode_t *vp, int fd); |
| | 618 | extern int vn_rdwr(int uio, vnode_t *vp, void *addr, ssize_t len, |
| | 619 | offset_t offset, int x1, int x2, rlim64_t x3, void *x4, ssize_t *residp); |
| | 620 | extern void vn_close(vnode_t *vp); |
| | 621 | |
| | 622 | #define vn_remove(path, x1, x2) remove(path) |
| | 623 | #define vn_rename(from, to, seg) rename((from), (to)) |
| | 624 | #define vn_is_readonly(vp) B_FALSE |
| | 625 | |
| | 626 | extern vnode_t *rootdir; |
| | 627 | |
| | 628 | #include <sys/file.h> /* for FREAD, FWRITE, etc */ |
| | 629 | |
| | 630 | /* |
| | 631 | * Random stuff |
| | 632 | */ |
| | 633 | #define ddi_get_lbolt() (gethrtime() >> 23) |
| | 634 | #define ddi_get_lbolt64() (gethrtime() >> 23) |
| | 635 | #define hz 119 /* frequency when using gethrtime() >> 23 for lbolt */ |
| | 636 | |
| | 637 | #define ddi_time_before(a, b) (a < b) |
| | 638 | #define ddi_time_after(a, b) ddi_time_before(b, a) |
| | 639 | #define ddi_time_before_eq(a, b) (!ddi_time_after(a, b)) |
| | 640 | #define ddi_time_after_eq(a, b) ddi_time_before_eq(b, a) |
| | 641 | |
| | 642 | #define ddi_time_before64(a, b) (a < b) |
| | 643 | #define ddi_time_after64(a, b) ddi_time_before64(b, a) |
| | 644 | #define ddi_time_before_eq64(a, b) (!ddi_time_after64(a, b)) |
| | 645 | #define ddi_time_after_eq64(a, b) ddi_time_before_eq64(b, a) |
| | 646 | |
| | 647 | extern void delay(clock_t ticks); |
| | 648 | |
| | 649 | #define SEC_TO_TICK(sec) ((sec) * hz) |
| | 650 | #define MSEC_TO_TICK(msec) ((msec) / (MILLISEC / hz)) |
| | 651 | #define USEC_TO_TICK(usec) ((usec) / (MICROSEC / hz)) |
| | 652 | #define NSEC_TO_TICK(usec) ((usec) / (NANOSEC / hz)) |
| | 653 | |
| | 654 | #define gethrestime_sec() time(NULL) |
| | 655 | #define gethrestime(t) \ |
| | 656 | do {\ |
| | 657 | (t)->tv_sec = gethrestime_sec();\ |
| | 658 | (t)->tv_nsec = 0;\ |
| | 659 | } while (0); |
| | 660 | |
| | 661 | #define max_ncpus 64 |
| | 662 | #define boot_ncpus (sysconf(_SC_NPROCESSORS_ONLN)) |
| | 663 | |
| | 664 | /* |
| | 665 | * Process priorities as defined by setpriority(2) and getpriority(2). |
| | 666 | */ |
| | 667 | #define minclsyspri 19 |
| | 668 | #define maxclsyspri -20 |
| | 669 | #define defclsyspri 0 |
| | 670 | |
| | 671 | #define CPU_SEQID ((uintptr_t)pthread_self() & (max_ncpus - 1)) |
| | 672 | |
| | 673 | #define kcred NULL |
| | 674 | #define CRED() NULL |
| | 675 | |
| | 676 | #define ptob(x) ((x) * PAGESIZE) |
| | 677 | |
| | 678 | extern uint64_t physmem; |
| | 679 | |
| | 680 | extern int highbit64(uint64_t i); |
| | 681 | extern int lowbit64(uint64_t i); |
| | 682 | extern int highbit(ulong_t i); |
| | 683 | extern int lowbit(ulong_t i); |
| | 684 | extern int random_get_bytes(uint8_t *ptr, size_t len); |
| | 685 | extern int random_get_pseudo_bytes(uint8_t *ptr, size_t len); |
| | 686 | |
| | 687 | extern void kernel_init(int); |
| | 688 | extern void kernel_fini(void); |
| | 689 | extern void thread_init(void); |
| | 690 | extern void thread_fini(void); |
| | 691 | extern void random_init(void); |
| | 692 | extern void random_fini(void); |
| | 693 | |
| | 694 | struct spa; |
| | 695 | extern void nicenum(uint64_t num, char *buf); |
| | 696 | extern void show_pool_stats(struct spa *); |
| | 697 | |
| | 698 | typedef struct callb_cpr { |
| | 699 | kmutex_t *cc_lockp; |
| | 700 | } callb_cpr_t; |
| | 701 | |
| | 702 | #define CALLB_CPR_INIT(cp, lockp, func, name) { \ |
| | 703 | (cp)->cc_lockp = lockp; \ |
| | 704 | } |
| | 705 | |
| | 706 | #define CALLB_CPR_SAFE_BEGIN(cp) { \ |
| | 707 | ASSERT(MUTEX_HELD((cp)->cc_lockp)); \ |
| | 708 | } |
| | 709 | |
| | 710 | #define CALLB_CPR_SAFE_END(cp, lockp) { \ |
| | 711 | ASSERT(MUTEX_HELD((cp)->cc_lockp)); \ |
| | 712 | } |
| | 713 | |
| | 714 | #define CALLB_CPR_EXIT(cp) { \ |
| | 715 | ASSERT(MUTEX_HELD((cp)->cc_lockp)); \ |
| | 716 | mutex_exit((cp)->cc_lockp); \ |
| | 717 | } |
| | 718 | |
| | 719 | #define zone_dataset_visible(x, y) (1) |
| | 720 | #define INGLOBALZONE(z) (1) |
| | 721 | |
| | 722 | extern char *kmem_vasprintf(const char *fmt, va_list adx); |
| | 723 | extern char *kmem_asprintf(const char *fmt, ...); |
| | 724 | #define strfree(str) kmem_free((str), strlen(str) + 1) |
| | 725 | |
| | 726 | /* |
| | 727 | * Hostname information |
| | 728 | */ |
| | 729 | extern char hw_serial[]; /* for userland-emulated hostid access */ |
| | 730 | extern int ddi_strtoul(const char *str, char **nptr, int base, |
| | 731 | unsigned long *result); |
| | 732 | |
| | 733 | extern int ddi_strtoull(const char *str, char **nptr, int base, |
| | 734 | u_longlong_t *result); |
| | 735 | |
| | 736 | typedef struct utsname utsname_t; |
| | 737 | extern utsname_t *utsname(void); |
| | 738 | |
| | 739 | /* ZFS Boot Related stuff. */ |
| | 740 | |
| | 741 | struct _buf { |
| | 742 | intptr_t _fd; |
| | 743 | }; |
| | 744 | |
| | 745 | struct bootstat { |
| | 746 | uint64_t st_size; |
| | 747 | }; |
| | 748 | |
| | 749 | typedef struct ace_object { |
| | 750 | uid_t a_who; |
| | 751 | uint32_t a_access_mask; |
| | 752 | uint16_t a_flags; |
| | 753 | uint16_t a_type; |
| | 754 | uint8_t a_obj_type[16]; |
| | 755 | uint8_t a_inherit_obj_type[16]; |
| | 756 | } ace_object_t; |
| | 757 | |
| | 758 | |
| | 759 | #define ACE_ACCESS_ALLOWED_OBJECT_ACE_TYPE 0x05 |
| | 760 | #define ACE_ACCESS_DENIED_OBJECT_ACE_TYPE 0x06 |
| | 761 | #define ACE_SYSTEM_AUDIT_OBJECT_ACE_TYPE 0x07 |
| | 762 | #define ACE_SYSTEM_ALARM_OBJECT_ACE_TYPE 0x08 |
| | 763 | |
| | 764 | extern struct _buf *kobj_open_file(char *name); |
| | 765 | extern int kobj_read_file(struct _buf *file, char *buf, unsigned size, |
| | 766 | unsigned off); |
| | 767 | extern void kobj_close_file(struct _buf *file); |
| | 768 | extern int kobj_get_filesize(struct _buf *file, uint64_t *size); |
| | 769 | extern int zfs_secpolicy_snapshot_perms(const char *name, cred_t *cr); |
| | 770 | extern int zfs_secpolicy_rename_perms(const char *from, const char *to, |
| | 771 | cred_t *cr); |
| | 772 | extern int zfs_secpolicy_destroy_perms(const char *name, cred_t *cr); |
| | 773 | extern int secpolicy_zfs(const cred_t *cr); |
| | 774 | extern zoneid_t getzoneid(void); |
| | 775 | |
| | 776 | /* SID stuff */ |
| | 777 | typedef struct ksiddomain { |
| | 778 | uint_t kd_ref; |
| | 779 | uint_t kd_len; |
| | 780 | char *kd_name; |
| | 781 | } ksiddomain_t; |
| | 782 | |
| | 783 | ksiddomain_t *ksid_lookupdomain(const char *); |
| | 784 | void ksiddomain_rele(ksiddomain_t *); |
| | 785 | |
| | 786 | #define DDI_SLEEP KM_SLEEP |
| | 787 | #define ddi_log_sysevent(_a, _b, _c, _d, _e, _f, _g) \ |
| | 788 | sysevent_post_event(_c, _d, _b, "libzpool", _e, _f) |
| | 789 | |
| | 790 | #define zfs_sleep_until(wakeup) \ |
| | 791 | do { \ |
| | 792 | hrtime_t delta = wakeup - gethrtime(); \ |
| | 793 | struct timespec ts; \ |
| | 794 | ts.tv_sec = delta / NANOSEC; \ |
| | 795 | ts.tv_nsec = delta % NANOSEC; \ |
| | 796 | (void) nanosleep(&ts, NULL); \ |
| | 797 | } while (0) |
| | 798 | |
| | 799 | typedef int fstrans_cookie_t; |
| | 800 | |
| | 801 | extern fstrans_cookie_t spl_fstrans_mark(void); |
| | 802 | extern void spl_fstrans_unmark(fstrans_cookie_t); |
| | 803 | extern int spl_fstrans_check(void); |
| | 804 | |
| | 805 | #endif /* _KERNEL */ |
| | 806 | #endif /* _SYS_ZFS_CONTEXT_H */ |
projects / mirror_zfs.git / blame_incremental