1*fa9e4066Sahrens /* 2*fa9e4066Sahrens * CDDL HEADER START 3*fa9e4066Sahrens * 4*fa9e4066Sahrens * The contents of this file are subject to the terms of the 5*fa9e4066Sahrens * Common Development and Distribution License, Version 1.0 only 6*fa9e4066Sahrens * (the "License"). You may not use this file except in compliance 7*fa9e4066Sahrens * with the License. 8*fa9e4066Sahrens * 9*fa9e4066Sahrens * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10*fa9e4066Sahrens * or http://www.opensolaris.org/os/licensing. 11*fa9e4066Sahrens * See the License for the specific language governing permissions 12*fa9e4066Sahrens * and limitations under the License. 13*fa9e4066Sahrens * 14*fa9e4066Sahrens * When distributing Covered Code, include this CDDL HEADER in each 15*fa9e4066Sahrens * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16*fa9e4066Sahrens * If applicable, add the following below this CDDL HEADER, with the 17*fa9e4066Sahrens * fields enclosed by brackets "[]" replaced with your own identifying 18*fa9e4066Sahrens * information: Portions Copyright [yyyy] [name of copyright owner] 19*fa9e4066Sahrens * 20*fa9e4066Sahrens * CDDL HEADER END 21*fa9e4066Sahrens */ 22*fa9e4066Sahrens /* 23*fa9e4066Sahrens * Copyright 2005 Sun Microsystems, Inc. All rights reserved. 24*fa9e4066Sahrens * Use is subject to license terms. 25*fa9e4066Sahrens */ 26*fa9e4066Sahrens 27*fa9e4066Sahrens #ifndef _SYS_ZFS_CONTEXT_H 28*fa9e4066Sahrens #define _SYS_ZFS_CONTEXT_H 29*fa9e4066Sahrens 30*fa9e4066Sahrens #pragma ident "%Z%%M% %I% %E% SMI" 31*fa9e4066Sahrens 32*fa9e4066Sahrens #ifdef __cplusplus 33*fa9e4066Sahrens extern "C" { 34*fa9e4066Sahrens #endif 35*fa9e4066Sahrens 36*fa9e4066Sahrens #define _SYS_MUTEX_H 37*fa9e4066Sahrens #define _SYS_RWLOCK_H 38*fa9e4066Sahrens #define _SYS_CONDVAR_H 39*fa9e4066Sahrens #define _SYS_SYSTM_H 40*fa9e4066Sahrens #define _SYS_DEBUG_H 41*fa9e4066Sahrens #define _SYS_T_LOCK_H 42*fa9e4066Sahrens #define _SYS_VNODE_H 43*fa9e4066Sahrens #define _SYS_VFS_H 44*fa9e4066Sahrens #define _SYS_SUNDDI_H 45*fa9e4066Sahrens #define _SYS_CALLB_H 46*fa9e4066Sahrens 47*fa9e4066Sahrens #include <stdio.h> 48*fa9e4066Sahrens #include <stdlib.h> 49*fa9e4066Sahrens #include <stddef.h> 50*fa9e4066Sahrens #include <stdarg.h> 51*fa9e4066Sahrens #include <fcntl.h> 52*fa9e4066Sahrens #include <unistd.h> 53*fa9e4066Sahrens #include <errno.h> 54*fa9e4066Sahrens #include <string.h> 55*fa9e4066Sahrens #include <strings.h> 56*fa9e4066Sahrens #include <synch.h> 57*fa9e4066Sahrens #include <thread.h> 58*fa9e4066Sahrens #include <assert.h> 59*fa9e4066Sahrens #include <alloca.h> 60*fa9e4066Sahrens #include <umem.h> 61*fa9e4066Sahrens #include <limits.h> 62*fa9e4066Sahrens #include <atomic.h> 63*fa9e4066Sahrens #include <dirent.h> 64*fa9e4066Sahrens #include <time.h> 65*fa9e4066Sahrens #include <sys/note.h> 66*fa9e4066Sahrens #include <sys/types.h> 67*fa9e4066Sahrens #include <sys/sysmacros.h> 68*fa9e4066Sahrens #include <sys/bitmap.h> 69*fa9e4066Sahrens #include <sys/resource.h> 70*fa9e4066Sahrens #include <sys/byteorder.h> 71*fa9e4066Sahrens #include <sys/list.h> 72*fa9e4066Sahrens #include <sys/uio.h> 73*fa9e4066Sahrens #include <sys/zfs_debug.h> 74*fa9e4066Sahrens #include <sys/sdt.h> 75*fa9e4066Sahrens 76*fa9e4066Sahrens /* 77*fa9e4066Sahrens * Debugging 78*fa9e4066Sahrens */ 79*fa9e4066Sahrens 80*fa9e4066Sahrens /* 81*fa9e4066Sahrens * Note that we are not using the debugging levels. 82*fa9e4066Sahrens */ 83*fa9e4066Sahrens 84*fa9e4066Sahrens #define CE_CONT 0 /* continuation */ 85*fa9e4066Sahrens #define CE_NOTE 1 /* notice */ 86*fa9e4066Sahrens #define CE_WARN 2 /* warning */ 87*fa9e4066Sahrens #define CE_PANIC 3 /* panic */ 88*fa9e4066Sahrens #define CE_IGNORE 4 /* print nothing */ 89*fa9e4066Sahrens 90*fa9e4066Sahrens /* 91*fa9e4066Sahrens * ZFS debugging 92*fa9e4066Sahrens */ 93*fa9e4066Sahrens 94*fa9e4066Sahrens #ifdef ZFS_DEBUG 95*fa9e4066Sahrens extern void dprintf_setup(int *argc, char **argv); 96*fa9e4066Sahrens #endif /* ZFS_DEBUG */ 97*fa9e4066Sahrens 98*fa9e4066Sahrens extern void cmn_err(int, const char *, ...); 99*fa9e4066Sahrens extern void panic(const char *, ...); 100*fa9e4066Sahrens extern void vpanic(const char *, __va_list); 101*fa9e4066Sahrens 102*fa9e4066Sahrens /* This definition is copied from assert.h. */ 103*fa9e4066Sahrens #if defined(__STDC__) 104*fa9e4066Sahrens #if __STDC_VERSION__ - 0 >= 199901L 105*fa9e4066Sahrens #define verify(EX) (void)((EX) || \ 106*fa9e4066Sahrens (__assert_c99(#EX, __FILE__, __LINE__, __func__), 0)) 107*fa9e4066Sahrens #else 108*fa9e4066Sahrens #define verify(EX) (void)((EX) || (__assert(#EX, __FILE__, __LINE__), 0)) 109*fa9e4066Sahrens #endif /* __STDC_VERSION__ - 0 >= 199901L */ 110*fa9e4066Sahrens #else 111*fa9e4066Sahrens #define verify(EX) (void)((EX) || (_assert("EX", __FILE__, __LINE__), 0)) 112*fa9e4066Sahrens #endif /* __STDC__ */ 113*fa9e4066Sahrens 114*fa9e4066Sahrens 115*fa9e4066Sahrens #define VERIFY verify 116*fa9e4066Sahrens #define ASSERT assert 117*fa9e4066Sahrens 118*fa9e4066Sahrens extern void __assert(const char *, const char *, int); 119*fa9e4066Sahrens 120*fa9e4066Sahrens #ifdef lint 121*fa9e4066Sahrens #define VERIFY3_IMPL(x, y, z, t) if (x == z) ((void)0) 122*fa9e4066Sahrens #else 123*fa9e4066Sahrens /* BEGIN CSTYLED */ 124*fa9e4066Sahrens #define VERIFY3_IMPL(LEFT, OP, RIGHT, TYPE) do { \ 125*fa9e4066Sahrens const TYPE __left = (TYPE)(LEFT); \ 126*fa9e4066Sahrens const TYPE __right = (TYPE)(RIGHT); \ 127*fa9e4066Sahrens if (!(__left OP __right)) { \ 128*fa9e4066Sahrens char *__buf = alloca(256); \ 129*fa9e4066Sahrens (void) snprintf(__buf, 256, "%s %s %s (0x%llx %s 0x%llx)", \ 130*fa9e4066Sahrens #LEFT, #OP, #RIGHT, \ 131*fa9e4066Sahrens (u_longlong_t)__left, #OP, (u_longlong_t)__right); \ 132*fa9e4066Sahrens __assert(__buf, __FILE__, __LINE__); \ 133*fa9e4066Sahrens } \ 134*fa9e4066Sahrens _NOTE(CONSTCOND) } while (0) 135*fa9e4066Sahrens /* END CSTYLED */ 136*fa9e4066Sahrens #endif /* lint */ 137*fa9e4066Sahrens 138*fa9e4066Sahrens #define VERIFY3S(x, y, z) VERIFY3_IMPL(x, y, z, int64_t) 139*fa9e4066Sahrens #define VERIFY3U(x, y, z) VERIFY3_IMPL(x, y, z, uint64_t) 140*fa9e4066Sahrens #define VERIFY3P(x, y, z) VERIFY3_IMPL(x, y, z, uintptr_t) 141*fa9e4066Sahrens 142*fa9e4066Sahrens #ifdef NDEBUG 143*fa9e4066Sahrens #define ASSERT3S(x, y, z) ((void)0) 144*fa9e4066Sahrens #define ASSERT3U(x, y, z) ((void)0) 145*fa9e4066Sahrens #define ASSERT3P(x, y, z) ((void)0) 146*fa9e4066Sahrens #else 147*fa9e4066Sahrens #define ASSERT3S(x, y, z) VERIFY3S(x, y, z) 148*fa9e4066Sahrens #define ASSERT3U(x, y, z) VERIFY3U(x, y, z) 149*fa9e4066Sahrens #define ASSERT3P(x, y, z) VERIFY3P(x, y, z) 150*fa9e4066Sahrens #endif 151*fa9e4066Sahrens 152*fa9e4066Sahrens /* 153*fa9e4066Sahrens * Dtrace SDT probes have different signatures in userland than they do in 154*fa9e4066Sahrens * kernel. If they're being used in kernel code, re-define them out of 155*fa9e4066Sahrens * existence for their counterparts in libzpool. 156*fa9e4066Sahrens */ 157*fa9e4066Sahrens 158*fa9e4066Sahrens #ifdef DTRACE_PROBE1 159*fa9e4066Sahrens #undef DTRACE_PROBE1 160*fa9e4066Sahrens #define DTRACE_PROBE1(a, b, c) ((void)0) 161*fa9e4066Sahrens #endif /* DTRACE_PROBE1 */ 162*fa9e4066Sahrens 163*fa9e4066Sahrens #ifdef DTRACE_PROBE2 164*fa9e4066Sahrens #undef DTRACE_PROBE2 165*fa9e4066Sahrens #define DTRACE_PROBE2(a, b, c, d, e) ((void)0) 166*fa9e4066Sahrens #endif /* DTRACE_PROBE2 */ 167*fa9e4066Sahrens 168*fa9e4066Sahrens /* 169*fa9e4066Sahrens * Threads 170*fa9e4066Sahrens */ 171*fa9e4066Sahrens #define curthread ((void *)(uintptr_t)thr_self()) 172*fa9e4066Sahrens 173*fa9e4066Sahrens typedef struct kthread kthread_t; 174*fa9e4066Sahrens 175*fa9e4066Sahrens #define thread_create(stk, stksize, func, arg, len, pp, state, pri) \ 176*fa9e4066Sahrens zk_thread_create(func, arg) 177*fa9e4066Sahrens #define thread_exit() thr_exit(0) 178*fa9e4066Sahrens 179*fa9e4066Sahrens extern kthread_t *zk_thread_create(void (*func)(), void *arg); 180*fa9e4066Sahrens 181*fa9e4066Sahrens #define issig(why) (FALSE) 182*fa9e4066Sahrens #define ISSIG(thr, why) (FALSE) 183*fa9e4066Sahrens 184*fa9e4066Sahrens /* 185*fa9e4066Sahrens * Mutexes 186*fa9e4066Sahrens */ 187*fa9e4066Sahrens typedef struct kmutex { 188*fa9e4066Sahrens void *m_owner; 189*fa9e4066Sahrens mutex_t m_lock; 190*fa9e4066Sahrens } kmutex_t; 191*fa9e4066Sahrens 192*fa9e4066Sahrens #define MUTEX_DEFAULT USYNC_THREAD 193*fa9e4066Sahrens #undef MUTEX_HELD 194*fa9e4066Sahrens #define MUTEX_HELD(m) _mutex_held(&(m)->m_lock) 195*fa9e4066Sahrens 196*fa9e4066Sahrens /* 197*fa9e4066Sahrens * Argh -- we have to get cheesy here because the kernel and userland 198*fa9e4066Sahrens * have different signatures for the same routine. 199*fa9e4066Sahrens */ 200*fa9e4066Sahrens extern int _mutex_init(mutex_t *mp, int type, void *arg); 201*fa9e4066Sahrens extern int _mutex_destroy(mutex_t *mp); 202*fa9e4066Sahrens 203*fa9e4066Sahrens #define mutex_init(mp, b, c, d) zmutex_init((kmutex_t *)(mp)) 204*fa9e4066Sahrens #define mutex_destroy(mp) zmutex_destroy((kmutex_t *)(mp)) 205*fa9e4066Sahrens 206*fa9e4066Sahrens extern void zmutex_init(kmutex_t *mp); 207*fa9e4066Sahrens extern void zmutex_destroy(kmutex_t *mp); 208*fa9e4066Sahrens extern void mutex_enter(kmutex_t *mp); 209*fa9e4066Sahrens extern void mutex_exit(kmutex_t *mp); 210*fa9e4066Sahrens extern int mutex_tryenter(kmutex_t *mp); 211*fa9e4066Sahrens extern void *mutex_owner(kmutex_t *mp); 212*fa9e4066Sahrens 213*fa9e4066Sahrens /* 214*fa9e4066Sahrens * RW locks 215*fa9e4066Sahrens */ 216*fa9e4066Sahrens typedef struct krwlock { 217*fa9e4066Sahrens void *rw_owner; 218*fa9e4066Sahrens rwlock_t rw_lock; 219*fa9e4066Sahrens } krwlock_t; 220*fa9e4066Sahrens 221*fa9e4066Sahrens typedef int krw_t; 222*fa9e4066Sahrens 223*fa9e4066Sahrens #define RW_READER 0 224*fa9e4066Sahrens #define RW_WRITER 1 225*fa9e4066Sahrens #define RW_DEFAULT USYNC_THREAD 226*fa9e4066Sahrens 227*fa9e4066Sahrens #undef RW_READ_HELD 228*fa9e4066Sahrens #define RW_READ_HELD(x) _rw_read_held(&(x)->rw_lock) 229*fa9e4066Sahrens 230*fa9e4066Sahrens #undef RW_WRITE_HELD 231*fa9e4066Sahrens #define RW_WRITE_HELD(x) _rw_write_held(&(x)->rw_lock) 232*fa9e4066Sahrens 233*fa9e4066Sahrens extern void rw_init(krwlock_t *rwlp, char *name, int type, void *arg); 234*fa9e4066Sahrens extern void rw_destroy(krwlock_t *rwlp); 235*fa9e4066Sahrens extern void rw_enter(krwlock_t *rwlp, krw_t rw); 236*fa9e4066Sahrens extern int rw_tryenter(krwlock_t *rwlp, krw_t rw); 237*fa9e4066Sahrens extern int rw_tryupgrade(krwlock_t *rwlp); 238*fa9e4066Sahrens extern void rw_exit(krwlock_t *rwlp); 239*fa9e4066Sahrens #define rw_downgrade(rwlp) do { } while (0) 240*fa9e4066Sahrens 241*fa9e4066Sahrens /* 242*fa9e4066Sahrens * Condition variables 243*fa9e4066Sahrens */ 244*fa9e4066Sahrens typedef cond_t kcondvar_t; 245*fa9e4066Sahrens 246*fa9e4066Sahrens #define CV_DEFAULT USYNC_THREAD 247*fa9e4066Sahrens 248*fa9e4066Sahrens extern void cv_init(kcondvar_t *cv, char *name, int type, void *arg); 249*fa9e4066Sahrens extern void cv_destroy(kcondvar_t *cv); 250*fa9e4066Sahrens extern void cv_wait(kcondvar_t *cv, kmutex_t *mp); 251*fa9e4066Sahrens extern clock_t cv_timedwait(kcondvar_t *cv, kmutex_t *mp, clock_t abstime); 252*fa9e4066Sahrens extern void cv_signal(kcondvar_t *cv); 253*fa9e4066Sahrens extern void cv_broadcast(kcondvar_t *cv); 254*fa9e4066Sahrens 255*fa9e4066Sahrens /* 256*fa9e4066Sahrens * Kernel memory 257*fa9e4066Sahrens */ 258*fa9e4066Sahrens #define KM_SLEEP UMEM_NOFAIL 259*fa9e4066Sahrens #define KM_NOSLEEP UMEM_DEFAULT 260*fa9e4066Sahrens #define kmem_alloc(_s, _f) umem_alloc(_s, _f) 261*fa9e4066Sahrens #define kmem_zalloc(_s, _f) umem_zalloc(_s, _f) 262*fa9e4066Sahrens #define kmem_free(_b, _s) umem_free(_b, _s) 263*fa9e4066Sahrens #define kmem_cache_create(_a, _b, _c, _d, _e, _f, _g, _h, _i) \ 264*fa9e4066Sahrens umem_cache_create(_a, _b, _c, _d, _e, _f, _g, _h, _i) 265*fa9e4066Sahrens #define kmem_cache_destroy(_c) umem_cache_destroy(_c) 266*fa9e4066Sahrens #define kmem_cache_alloc(_c, _f) umem_cache_alloc(_c, _f) 267*fa9e4066Sahrens #define kmem_cache_free(_c, _b) umem_cache_free(_c, _b) 268*fa9e4066Sahrens #define kmem_debugging() 0 269*fa9e4066Sahrens #define kmem_cache_reap_now(c) 270*fa9e4066Sahrens 271*fa9e4066Sahrens typedef umem_cache_t kmem_cache_t; 272*fa9e4066Sahrens 273*fa9e4066Sahrens /* 274*fa9e4066Sahrens * Task queues 275*fa9e4066Sahrens */ 276*fa9e4066Sahrens typedef struct taskq taskq_t; 277*fa9e4066Sahrens typedef uintptr_t taskqid_t; 278*fa9e4066Sahrens typedef void (task_func_t)(void *); 279*fa9e4066Sahrens 280*fa9e4066Sahrens #define TASKQ_PREPOPULATE 0x0001 281*fa9e4066Sahrens #define TASKQ_CPR_SAFE 0x0002 /* Use CPR safe protocol */ 282*fa9e4066Sahrens #define TASKQ_DYNAMIC 0x0004 /* Use dynamic thread scheduling */ 283*fa9e4066Sahrens 284*fa9e4066Sahrens #define TQ_SLEEP KM_SLEEP /* Can block for memory */ 285*fa9e4066Sahrens #define TQ_NOSLEEP KM_NOSLEEP /* cannot block for memory; may fail */ 286*fa9e4066Sahrens #define TQ_NOQUEUE 0x02 /* Do not enqueue if can't dispatch */ 287*fa9e4066Sahrens 288*fa9e4066Sahrens extern taskq_t *taskq_create(const char *, int, pri_t, int, int, uint_t); 289*fa9e4066Sahrens extern taskqid_t taskq_dispatch(taskq_t *, task_func_t, void *, uint_t); 290*fa9e4066Sahrens extern void taskq_destroy(taskq_t *); 291*fa9e4066Sahrens extern void taskq_wait(taskq_t *); 292*fa9e4066Sahrens extern int taskq_member(taskq_t *, void *); 293*fa9e4066Sahrens 294*fa9e4066Sahrens /* 295*fa9e4066Sahrens * vnodes 296*fa9e4066Sahrens */ 297*fa9e4066Sahrens typedef struct vnode { 298*fa9e4066Sahrens uint64_t v_size; 299*fa9e4066Sahrens int v_fd; 300*fa9e4066Sahrens char *v_path; 301*fa9e4066Sahrens } vnode_t; 302*fa9e4066Sahrens 303*fa9e4066Sahrens typedef struct vattr { 304*fa9e4066Sahrens uint_t va_mask; /* bit-mask of attributes */ 305*fa9e4066Sahrens u_offset_t va_size; /* file size in bytes */ 306*fa9e4066Sahrens } vattr_t; 307*fa9e4066Sahrens 308*fa9e4066Sahrens #define AT_TYPE 0x0001 309*fa9e4066Sahrens #define AT_MODE 0x0002 310*fa9e4066Sahrens #define AT_UID 0x0004 311*fa9e4066Sahrens #define AT_GID 0x0008 312*fa9e4066Sahrens #define AT_FSID 0x0010 313*fa9e4066Sahrens #define AT_NODEID 0x0020 314*fa9e4066Sahrens #define AT_NLINK 0x0040 315*fa9e4066Sahrens #define AT_SIZE 0x0080 316*fa9e4066Sahrens #define AT_ATIME 0x0100 317*fa9e4066Sahrens #define AT_MTIME 0x0200 318*fa9e4066Sahrens #define AT_CTIME 0x0400 319*fa9e4066Sahrens #define AT_RDEV 0x0800 320*fa9e4066Sahrens #define AT_BLKSIZE 0x1000 321*fa9e4066Sahrens #define AT_NBLOCKS 0x2000 322*fa9e4066Sahrens #define AT_SEQ 0x8000 323*fa9e4066Sahrens 324*fa9e4066Sahrens #define CRCREAT 0 325*fa9e4066Sahrens 326*fa9e4066Sahrens #define VOP_CLOSE(vp, f, c, o, cr) 0 327*fa9e4066Sahrens #define VOP_PUTPAGE(vp, of, sz, fl, cr) 0 328*fa9e4066Sahrens #define VOP_GETATTR(vp, vap, fl, cr) ((vap)->va_size = (vp)->v_size, 0) 329*fa9e4066Sahrens 330*fa9e4066Sahrens #define VOP_FSYNC(vp, f, cr) fsync((vp)->v_fd) 331*fa9e4066Sahrens 332*fa9e4066Sahrens #define VN_RELE(vp) vn_close(vp) 333*fa9e4066Sahrens 334*fa9e4066Sahrens extern int vn_open(char *path, int x1, int oflags, int mode, vnode_t **vpp, 335*fa9e4066Sahrens int x2, int x3); 336*fa9e4066Sahrens extern int vn_openat(char *path, int x1, int oflags, int mode, vnode_t **vpp, 337*fa9e4066Sahrens int x2, int x3, vnode_t *vp); 338*fa9e4066Sahrens extern int vn_rdwr(int uio, vnode_t *vp, void *addr, ssize_t len, 339*fa9e4066Sahrens offset_t offset, int x1, int x2, rlim64_t x3, void *x4, ssize_t *residp); 340*fa9e4066Sahrens extern void vn_close(vnode_t *vp); 341*fa9e4066Sahrens 342*fa9e4066Sahrens #define vn_remove(path, x1, x2) remove(path) 343*fa9e4066Sahrens #define vn_rename(from, to, seg) rename((from), (to)) 344*fa9e4066Sahrens 345*fa9e4066Sahrens extern vnode_t *rootdir; 346*fa9e4066Sahrens 347*fa9e4066Sahrens #include <sys/file.h> /* for FREAD, FWRITE, etc */ 348*fa9e4066Sahrens 349*fa9e4066Sahrens /* 350*fa9e4066Sahrens * Random stuff 351*fa9e4066Sahrens */ 352*fa9e4066Sahrens #define lbolt (gethrtime() >> 23) 353*fa9e4066Sahrens #define lbolt64 (gethrtime() >> 23) 354*fa9e4066Sahrens #define hz 119 /* frequency when using gethrtime() >> 23 for lbolt */ 355*fa9e4066Sahrens 356*fa9e4066Sahrens extern void delay(clock_t ticks); 357*fa9e4066Sahrens 358*fa9e4066Sahrens #define gethrestime_sec() time(NULL) 359*fa9e4066Sahrens 360*fa9e4066Sahrens #define max_ncpus 64 361*fa9e4066Sahrens 362*fa9e4066Sahrens #define minclsyspri 60 363*fa9e4066Sahrens #define maxclsyspri 99 364*fa9e4066Sahrens 365*fa9e4066Sahrens #define CPU_SEQID (thr_self() & (max_ncpus - 1)) 366*fa9e4066Sahrens 367*fa9e4066Sahrens #define kcred NULL 368*fa9e4066Sahrens #define CRED() NULL 369*fa9e4066Sahrens 370*fa9e4066Sahrens extern uint64_t physmem; 371*fa9e4066Sahrens 372*fa9e4066Sahrens extern int highbit(ulong_t i); 373*fa9e4066Sahrens extern int random_get_bytes(uint8_t *ptr, size_t len); 374*fa9e4066Sahrens extern int random_get_pseudo_bytes(uint8_t *ptr, size_t len); 375*fa9e4066Sahrens 376*fa9e4066Sahrens extern void kernel_init(int); 377*fa9e4066Sahrens extern void kernel_fini(void); 378*fa9e4066Sahrens 379*fa9e4066Sahrens struct spa; 380*fa9e4066Sahrens extern void nicenum(uint64_t num, char *buf); 381*fa9e4066Sahrens extern void show_pool_stats(struct spa *); 382*fa9e4066Sahrens 383*fa9e4066Sahrens typedef struct callb_cpr { 384*fa9e4066Sahrens kmutex_t *cc_lockp; 385*fa9e4066Sahrens } callb_cpr_t; 386*fa9e4066Sahrens 387*fa9e4066Sahrens #define CALLB_CPR_INIT(cp, lockp, func, name) { \ 388*fa9e4066Sahrens (cp)->cc_lockp = lockp; \ 389*fa9e4066Sahrens } 390*fa9e4066Sahrens 391*fa9e4066Sahrens #define CALLB_CPR_SAFE_BEGIN(cp) { \ 392*fa9e4066Sahrens ASSERT(MUTEX_HELD((cp)->cc_lockp)); \ 393*fa9e4066Sahrens } 394*fa9e4066Sahrens 395*fa9e4066Sahrens #define CALLB_CPR_SAFE_END(cp, lockp) { \ 396*fa9e4066Sahrens ASSERT(MUTEX_HELD((cp)->cc_lockp)); \ 397*fa9e4066Sahrens } 398*fa9e4066Sahrens 399*fa9e4066Sahrens #define CALLB_CPR_EXIT(cp) { \ 400*fa9e4066Sahrens ASSERT(MUTEX_HELD((cp)->cc_lockp)); \ 401*fa9e4066Sahrens mutex_exit((cp)->cc_lockp); \ 402*fa9e4066Sahrens } 403*fa9e4066Sahrens 404*fa9e4066Sahrens #define zone_dataset_visible(x, y) (1) 405*fa9e4066Sahrens #define INGLOBALZONE(z) (1) 406*fa9e4066Sahrens 407*fa9e4066Sahrens #ifdef __cplusplus 408*fa9e4066Sahrens } 409*fa9e4066Sahrens #endif 410*fa9e4066Sahrens 411*fa9e4066Sahrens #endif /* _SYS_ZFS_CONTEXT_H */ 412