1fa9e4066Sahrens /* 2fa9e4066Sahrens * CDDL HEADER START 3fa9e4066Sahrens * 4fa9e4066Sahrens * The contents of this file are subject to the terms of the 5ea8dc4b6Seschrock * Common Development and Distribution License (the "License"). 6ea8dc4b6Seschrock * You may not use this file except in compliance with the License. 7fa9e4066Sahrens * 8fa9e4066Sahrens * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9fa9e4066Sahrens * or http://www.opensolaris.org/os/licensing. 10fa9e4066Sahrens * See the License for the specific language governing permissions 11fa9e4066Sahrens * and limitations under the License. 12fa9e4066Sahrens * 13fa9e4066Sahrens * When distributing Covered Code, include this CDDL HEADER in each 14fa9e4066Sahrens * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15fa9e4066Sahrens * If applicable, add the following below this CDDL HEADER, with the 16fa9e4066Sahrens * fields enclosed by brackets "[]" replaced with your own identifying 17fa9e4066Sahrens * information: Portions Copyright [yyyy] [name of copyright owner] 18fa9e4066Sahrens * 19fa9e4066Sahrens * CDDL HEADER END 20fa9e4066Sahrens */ 21fa9e4066Sahrens /* 22c99e4bdcSChris Kirby * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved. 2394dd93aeSGeorge Wilson * Copyright (c) 2012 by Delphix. All rights reserved. 24fa9e4066Sahrens */ 25fa9e4066Sahrens 26fa9e4066Sahrens #include <assert.h> 27c9431fa1Sahl #include <fcntl.h> 28fa9e4066Sahrens #include <poll.h> 29fa9e4066Sahrens #include <stdio.h> 30fa9e4066Sahrens #include <stdlib.h> 31c9431fa1Sahl #include <string.h> 32c9431fa1Sahl #include <zlib.h> 33fa9e4066Sahrens #include <sys/spa.h> 34c9431fa1Sahl #include <sys/stat.h> 35fa9e4066Sahrens #include <sys/processor.h> 36c9431fa1Sahl #include <sys/zfs_context.h> 37*3b2aab18SMatthew Ahrens #include <sys/rrwlock.h> 38c9431fa1Sahl #include <sys/zmod.h> 3995173954Sek #include <sys/utsname.h> 405679c89fSjv #include <sys/systeminfo.h> 415ad82045Snd 42fa9e4066Sahrens /* 43fa9e4066Sahrens * Emulation of kernel services in userland. 44fa9e4066Sahrens */ 45fa9e4066Sahrens 46feef89cfSVictor Latushkin int aok; 47fa9e4066Sahrens uint64_t physmem; 48fa9e4066Sahrens vnode_t *rootdir = (vnode_t *)0xabcd1234; 495679c89fSjv char hw_serial[HW_HOSTID_LEN]; 50283b8460SGeorge.Wilson kmutex_t cpu_lock; 5194dd93aeSGeorge Wilson vmem_t *zio_arena = NULL; 5295173954Sek 5395173954Sek struct utsname utsname = { 5495173954Sek "userland", "libzpool", "1", "1", "na" 5595173954Sek }; 56fa9e4066Sahrens 5735a5a358SJonathan Adams /* this only exists to have its address taken */ 5835a5a358SJonathan Adams struct proc p0; 5935a5a358SJonathan Adams 60fa9e4066Sahrens /* 61fa9e4066Sahrens * ========================================================================= 62fa9e4066Sahrens * threads 63fa9e4066Sahrens * ========================================================================= 64fa9e4066Sahrens */ 65fa9e4066Sahrens /*ARGSUSED*/ 66fa9e4066Sahrens kthread_t * 67fa9e4066Sahrens zk_thread_create(void (*func)(), void *arg) 68fa9e4066Sahrens { 69fa9e4066Sahrens thread_t tid; 70fa9e4066Sahrens 71fa9e4066Sahrens VERIFY(thr_create(0, 0, (void *(*)(void *))func, arg, THR_DETACHED, 72fa9e4066Sahrens &tid) == 0); 73fa9e4066Sahrens 74fa9e4066Sahrens return ((void *)(uintptr_t)tid); 75fa9e4066Sahrens } 76fa9e4066Sahrens 7744cb6abcSbmc /* 7844cb6abcSbmc * ========================================================================= 7944cb6abcSbmc * kstats 8044cb6abcSbmc * ========================================================================= 8144cb6abcSbmc */ 8244cb6abcSbmc /*ARGSUSED*/ 8344cb6abcSbmc kstat_t * 84c3a66015SMatthew Ahrens kstat_create(const char *module, int instance, const char *name, 85c3a66015SMatthew Ahrens const char *class, uchar_t type, ulong_t ndata, uchar_t ks_flag) 8644cb6abcSbmc { 8744cb6abcSbmc return (NULL); 8844cb6abcSbmc } 8944cb6abcSbmc 9044cb6abcSbmc /*ARGSUSED*/ 9144cb6abcSbmc void 9244cb6abcSbmc kstat_install(kstat_t *ksp) 9344cb6abcSbmc {} 9444cb6abcSbmc 9544cb6abcSbmc /*ARGSUSED*/ 9644cb6abcSbmc void 9744cb6abcSbmc kstat_delete(kstat_t *ksp) 9844cb6abcSbmc {} 9944cb6abcSbmc 100c3a66015SMatthew Ahrens /*ARGSUSED*/ 101c3a66015SMatthew Ahrens void 102c3a66015SMatthew Ahrens kstat_waitq_enter(kstat_io_t *kiop) 103c3a66015SMatthew Ahrens {} 104c3a66015SMatthew Ahrens 105c3a66015SMatthew Ahrens /*ARGSUSED*/ 106c3a66015SMatthew Ahrens void 107c3a66015SMatthew Ahrens kstat_waitq_exit(kstat_io_t *kiop) 108c3a66015SMatthew Ahrens {} 109c3a66015SMatthew Ahrens 110c3a66015SMatthew Ahrens /*ARGSUSED*/ 111c3a66015SMatthew Ahrens void 112c3a66015SMatthew Ahrens kstat_runq_enter(kstat_io_t *kiop) 113c3a66015SMatthew Ahrens {} 114c3a66015SMatthew Ahrens 115c3a66015SMatthew Ahrens /*ARGSUSED*/ 116c3a66015SMatthew Ahrens void 117c3a66015SMatthew Ahrens kstat_runq_exit(kstat_io_t *kiop) 118c3a66015SMatthew Ahrens {} 119c3a66015SMatthew Ahrens 120c3a66015SMatthew Ahrens /*ARGSUSED*/ 121c3a66015SMatthew Ahrens void 122c3a66015SMatthew Ahrens kstat_waitq_to_runq(kstat_io_t *kiop) 123c3a66015SMatthew Ahrens {} 124c3a66015SMatthew Ahrens 125c3a66015SMatthew Ahrens /*ARGSUSED*/ 126c3a66015SMatthew Ahrens void 127c3a66015SMatthew Ahrens kstat_runq_back_to_waitq(kstat_io_t *kiop) 128c3a66015SMatthew Ahrens {} 129c3a66015SMatthew Ahrens 130fa9e4066Sahrens /* 131fa9e4066Sahrens * ========================================================================= 132fa9e4066Sahrens * mutexes 133fa9e4066Sahrens * ========================================================================= 134fa9e4066Sahrens */ 135fa9e4066Sahrens void 136fa9e4066Sahrens zmutex_init(kmutex_t *mp) 137fa9e4066Sahrens { 138fa9e4066Sahrens mp->m_owner = NULL; 139c25056deSgw mp->initialized = B_TRUE; 140fa9e4066Sahrens (void) _mutex_init(&mp->m_lock, USYNC_THREAD, NULL); 141fa9e4066Sahrens } 142fa9e4066Sahrens 143fa9e4066Sahrens void 144fa9e4066Sahrens zmutex_destroy(kmutex_t *mp) 145fa9e4066Sahrens { 146c25056deSgw ASSERT(mp->initialized == B_TRUE); 147fa9e4066Sahrens ASSERT(mp->m_owner == NULL); 148fa9e4066Sahrens (void) _mutex_destroy(&(mp)->m_lock); 149fa9e4066Sahrens mp->m_owner = (void *)-1UL; 150c25056deSgw mp->initialized = B_FALSE; 151fa9e4066Sahrens } 152fa9e4066Sahrens 153fa9e4066Sahrens void 154fa9e4066Sahrens mutex_enter(kmutex_t *mp) 155fa9e4066Sahrens { 156c25056deSgw ASSERT(mp->initialized == B_TRUE); 157fa9e4066Sahrens ASSERT(mp->m_owner != (void *)-1UL); 158fa9e4066Sahrens ASSERT(mp->m_owner != curthread); 1595ad82045Snd VERIFY(mutex_lock(&mp->m_lock) == 0); 160fa9e4066Sahrens ASSERT(mp->m_owner == NULL); 161fa9e4066Sahrens mp->m_owner = curthread; 162fa9e4066Sahrens } 163fa9e4066Sahrens 164fa9e4066Sahrens int 165fa9e4066Sahrens mutex_tryenter(kmutex_t *mp) 166fa9e4066Sahrens { 167c25056deSgw ASSERT(mp->initialized == B_TRUE); 168fa9e4066Sahrens ASSERT(mp->m_owner != (void *)-1UL); 169fa9e4066Sahrens if (0 == mutex_trylock(&mp->m_lock)) { 170fa9e4066Sahrens ASSERT(mp->m_owner == NULL); 171fa9e4066Sahrens mp->m_owner = curthread; 172fa9e4066Sahrens return (1); 173fa9e4066Sahrens } else { 174fa9e4066Sahrens return (0); 175fa9e4066Sahrens } 176fa9e4066Sahrens } 177fa9e4066Sahrens 178fa9e4066Sahrens void 179fa9e4066Sahrens mutex_exit(kmutex_t *mp) 180fa9e4066Sahrens { 181c25056deSgw ASSERT(mp->initialized == B_TRUE); 182fa9e4066Sahrens ASSERT(mutex_owner(mp) == curthread); 183fa9e4066Sahrens mp->m_owner = NULL; 1845ad82045Snd VERIFY(mutex_unlock(&mp->m_lock) == 0); 185fa9e4066Sahrens } 186fa9e4066Sahrens 187fa9e4066Sahrens void * 188fa9e4066Sahrens mutex_owner(kmutex_t *mp) 189fa9e4066Sahrens { 190c25056deSgw ASSERT(mp->initialized == B_TRUE); 191fa9e4066Sahrens return (mp->m_owner); 192fa9e4066Sahrens } 193fa9e4066Sahrens 194fa9e4066Sahrens /* 195fa9e4066Sahrens * ========================================================================= 196fa9e4066Sahrens * rwlocks 197fa9e4066Sahrens * ========================================================================= 198fa9e4066Sahrens */ 199fa9e4066Sahrens /*ARGSUSED*/ 200fa9e4066Sahrens void 201fa9e4066Sahrens rw_init(krwlock_t *rwlp, char *name, int type, void *arg) 202fa9e4066Sahrens { 203fa9e4066Sahrens rwlock_init(&rwlp->rw_lock, USYNC_THREAD, NULL); 204fa9e4066Sahrens rwlp->rw_owner = NULL; 205c25056deSgw rwlp->initialized = B_TRUE; 206fa9e4066Sahrens } 207fa9e4066Sahrens 208fa9e4066Sahrens void 209fa9e4066Sahrens rw_destroy(krwlock_t *rwlp) 210fa9e4066Sahrens { 211fa9e4066Sahrens rwlock_destroy(&rwlp->rw_lock); 212fa9e4066Sahrens rwlp->rw_owner = (void *)-1UL; 213c25056deSgw rwlp->initialized = B_FALSE; 214fa9e4066Sahrens } 215fa9e4066Sahrens 216fa9e4066Sahrens void 217fa9e4066Sahrens rw_enter(krwlock_t *rwlp, krw_t rw) 218fa9e4066Sahrens { 219fa9e4066Sahrens ASSERT(!RW_LOCK_HELD(rwlp)); 220c25056deSgw ASSERT(rwlp->initialized == B_TRUE); 221fa9e4066Sahrens ASSERT(rwlp->rw_owner != (void *)-1UL); 222fa9e4066Sahrens ASSERT(rwlp->rw_owner != curthread); 223fa9e4066Sahrens 224fa9e4066Sahrens if (rw == RW_READER) 225745cd3c5Smaybee VERIFY(rw_rdlock(&rwlp->rw_lock) == 0); 226fa9e4066Sahrens else 227745cd3c5Smaybee VERIFY(rw_wrlock(&rwlp->rw_lock) == 0); 228fa9e4066Sahrens 229fa9e4066Sahrens rwlp->rw_owner = curthread; 230fa9e4066Sahrens } 231fa9e4066Sahrens 232fa9e4066Sahrens void 233fa9e4066Sahrens rw_exit(krwlock_t *rwlp) 234fa9e4066Sahrens { 235c25056deSgw ASSERT(rwlp->initialized == B_TRUE); 236fa9e4066Sahrens ASSERT(rwlp->rw_owner != (void *)-1UL); 237fa9e4066Sahrens 238fa9e4066Sahrens rwlp->rw_owner = NULL; 239745cd3c5Smaybee VERIFY(rw_unlock(&rwlp->rw_lock) == 0); 240fa9e4066Sahrens } 241fa9e4066Sahrens 242fa9e4066Sahrens int 243fa9e4066Sahrens rw_tryenter(krwlock_t *rwlp, krw_t rw) 244fa9e4066Sahrens { 245fa9e4066Sahrens int rv; 246fa9e4066Sahrens 247c25056deSgw ASSERT(rwlp->initialized == B_TRUE); 248fa9e4066Sahrens ASSERT(rwlp->rw_owner != (void *)-1UL); 249fa9e4066Sahrens 250fa9e4066Sahrens if (rw == RW_READER) 251fa9e4066Sahrens rv = rw_tryrdlock(&rwlp->rw_lock); 252fa9e4066Sahrens else 253fa9e4066Sahrens rv = rw_trywrlock(&rwlp->rw_lock); 254fa9e4066Sahrens 255fa9e4066Sahrens if (rv == 0) { 256fa9e4066Sahrens rwlp->rw_owner = curthread; 257fa9e4066Sahrens return (1); 258fa9e4066Sahrens } 259fa9e4066Sahrens 260fa9e4066Sahrens return (0); 261fa9e4066Sahrens } 262fa9e4066Sahrens 263fa9e4066Sahrens /*ARGSUSED*/ 264fa9e4066Sahrens int 265fa9e4066Sahrens rw_tryupgrade(krwlock_t *rwlp) 266fa9e4066Sahrens { 267c25056deSgw ASSERT(rwlp->initialized == B_TRUE); 268fa9e4066Sahrens ASSERT(rwlp->rw_owner != (void *)-1UL); 269fa9e4066Sahrens 270fa9e4066Sahrens return (0); 271fa9e4066Sahrens } 272fa9e4066Sahrens 273fa9e4066Sahrens /* 274fa9e4066Sahrens * ========================================================================= 275fa9e4066Sahrens * condition variables 276fa9e4066Sahrens * ========================================================================= 277fa9e4066Sahrens */ 278fa9e4066Sahrens /*ARGSUSED*/ 279fa9e4066Sahrens void 280fa9e4066Sahrens cv_init(kcondvar_t *cv, char *name, int type, void *arg) 281fa9e4066Sahrens { 2825ad82045Snd VERIFY(cond_init(cv, type, NULL) == 0); 283fa9e4066Sahrens } 284fa9e4066Sahrens 285fa9e4066Sahrens void 286fa9e4066Sahrens cv_destroy(kcondvar_t *cv) 287fa9e4066Sahrens { 2885ad82045Snd VERIFY(cond_destroy(cv) == 0); 289fa9e4066Sahrens } 290fa9e4066Sahrens 291fa9e4066Sahrens void 292fa9e4066Sahrens cv_wait(kcondvar_t *cv, kmutex_t *mp) 293fa9e4066Sahrens { 294fa9e4066Sahrens ASSERT(mutex_owner(mp) == curthread); 295fa9e4066Sahrens mp->m_owner = NULL; 2965ad82045Snd int ret = cond_wait(cv, &mp->m_lock); 2975ad82045Snd VERIFY(ret == 0 || ret == EINTR); 298fa9e4066Sahrens mp->m_owner = curthread; 299fa9e4066Sahrens } 300fa9e4066Sahrens 301fa9e4066Sahrens clock_t 302fa9e4066Sahrens cv_timedwait(kcondvar_t *cv, kmutex_t *mp, clock_t abstime) 303fa9e4066Sahrens { 304fa9e4066Sahrens int error; 305fa9e4066Sahrens timestruc_t ts; 306fa9e4066Sahrens clock_t delta; 307fa9e4066Sahrens 308fa9e4066Sahrens top: 309d3d50737SRafael Vanoni delta = abstime - ddi_get_lbolt(); 310fa9e4066Sahrens if (delta <= 0) 311fa9e4066Sahrens return (-1); 312fa9e4066Sahrens 313fa9e4066Sahrens ts.tv_sec = delta / hz; 314fa9e4066Sahrens ts.tv_nsec = (delta % hz) * (NANOSEC / hz); 315fa9e4066Sahrens 316fa9e4066Sahrens ASSERT(mutex_owner(mp) == curthread); 317fa9e4066Sahrens mp->m_owner = NULL; 318fa9e4066Sahrens error = cond_reltimedwait(cv, &mp->m_lock, &ts); 319fa9e4066Sahrens mp->m_owner = curthread; 320fa9e4066Sahrens 321fa9e4066Sahrens if (error == ETIME) 322fa9e4066Sahrens return (-1); 323fa9e4066Sahrens 324fa9e4066Sahrens if (error == EINTR) 325fa9e4066Sahrens goto top; 326fa9e4066Sahrens 327fa9e4066Sahrens ASSERT(error == 0); 328fa9e4066Sahrens 329fa9e4066Sahrens return (1); 330fa9e4066Sahrens } 331fa9e4066Sahrens 332fa9e4066Sahrens void 333fa9e4066Sahrens cv_signal(kcondvar_t *cv) 334fa9e4066Sahrens { 3355ad82045Snd VERIFY(cond_signal(cv) == 0); 336fa9e4066Sahrens } 337fa9e4066Sahrens 338fa9e4066Sahrens void 339fa9e4066Sahrens cv_broadcast(kcondvar_t *cv) 340fa9e4066Sahrens { 3415ad82045Snd VERIFY(cond_broadcast(cv) == 0); 342fa9e4066Sahrens } 343fa9e4066Sahrens 344fa9e4066Sahrens /* 345fa9e4066Sahrens * ========================================================================= 346fa9e4066Sahrens * vnode operations 347fa9e4066Sahrens * ========================================================================= 348fa9e4066Sahrens */ 349fa9e4066Sahrens /* 350fa9e4066Sahrens * Note: for the xxxat() versions of these functions, we assume that the 351fa9e4066Sahrens * starting vp is always rootdir (which is true for spa_directory.c, the only 352fa9e4066Sahrens * ZFS consumer of these interfaces). We assert this is true, and then emulate 353fa9e4066Sahrens * them by adding '/' in front of the path. 354fa9e4066Sahrens */ 355fa9e4066Sahrens 356fa9e4066Sahrens /*ARGSUSED*/ 357fa9e4066Sahrens int 358fa9e4066Sahrens vn_open(char *path, int x1, int flags, int mode, vnode_t **vpp, int x2, int x3) 359fa9e4066Sahrens { 360fa9e4066Sahrens int fd; 361fa9e4066Sahrens vnode_t *vp; 362fa9e4066Sahrens int old_umask; 363fa9e4066Sahrens char realpath[MAXPATHLEN]; 364fa9e4066Sahrens struct stat64 st; 365fa9e4066Sahrens 366fa9e4066Sahrens /* 367fa9e4066Sahrens * If we're accessing a real disk from userland, we need to use 368fa9e4066Sahrens * the character interface to avoid caching. This is particularly 369fa9e4066Sahrens * important if we're trying to look at a real in-kernel storage 370fa9e4066Sahrens * pool from userland, e.g. via zdb, because otherwise we won't 371fa9e4066Sahrens * see the changes occurring under the segmap cache. 372fa9e4066Sahrens * On the other hand, the stupid character device returns zero 373fa9e4066Sahrens * for its size. So -- gag -- we open the block device to get 374fa9e4066Sahrens * its size, and remember it for subsequent VOP_GETATTR(). 375fa9e4066Sahrens */ 376fa9e4066Sahrens if (strncmp(path, "/dev/", 5) == 0) { 377fa9e4066Sahrens char *dsk; 378fa9e4066Sahrens fd = open64(path, O_RDONLY); 379fa9e4066Sahrens if (fd == -1) 380fa9e4066Sahrens return (errno); 381fa9e4066Sahrens if (fstat64(fd, &st) == -1) { 382fa9e4066Sahrens close(fd); 383fa9e4066Sahrens return (errno); 384fa9e4066Sahrens } 385fa9e4066Sahrens close(fd); 386fa9e4066Sahrens (void) sprintf(realpath, "%s", path); 387fa9e4066Sahrens dsk = strstr(path, "/dsk/"); 388fa9e4066Sahrens if (dsk != NULL) 389fa9e4066Sahrens (void) sprintf(realpath + (dsk - path) + 1, "r%s", 390fa9e4066Sahrens dsk + 1); 391fa9e4066Sahrens } else { 392fa9e4066Sahrens (void) sprintf(realpath, "%s", path); 393fa9e4066Sahrens if (!(flags & FCREAT) && stat64(realpath, &st) == -1) 394fa9e4066Sahrens return (errno); 395fa9e4066Sahrens } 396fa9e4066Sahrens 397fa9e4066Sahrens if (flags & FCREAT) 398fa9e4066Sahrens old_umask = umask(0); 399fa9e4066Sahrens 400fa9e4066Sahrens /* 401fa9e4066Sahrens * The construct 'flags - FREAD' conveniently maps combinations of 402fa9e4066Sahrens * FREAD and FWRITE to the corresponding O_RDONLY, O_WRONLY, and O_RDWR. 403fa9e4066Sahrens */ 404fa9e4066Sahrens fd = open64(realpath, flags - FREAD, mode); 405fa9e4066Sahrens 406fa9e4066Sahrens if (flags & FCREAT) 407fa9e4066Sahrens (void) umask(old_umask); 408fa9e4066Sahrens 409fa9e4066Sahrens if (fd == -1) 410fa9e4066Sahrens return (errno); 411fa9e4066Sahrens 412fa9e4066Sahrens if (fstat64(fd, &st) == -1) { 413fa9e4066Sahrens close(fd); 414fa9e4066Sahrens return (errno); 415fa9e4066Sahrens } 416fa9e4066Sahrens 417fa9e4066Sahrens (void) fcntl(fd, F_SETFD, FD_CLOEXEC); 418fa9e4066Sahrens 419fa9e4066Sahrens *vpp = vp = umem_zalloc(sizeof (vnode_t), UMEM_NOFAIL); 420fa9e4066Sahrens 421fa9e4066Sahrens vp->v_fd = fd; 422fa9e4066Sahrens vp->v_size = st.st_size; 423fa9e4066Sahrens vp->v_path = spa_strdup(path); 424fa9e4066Sahrens 425fa9e4066Sahrens return (0); 426fa9e4066Sahrens } 427fa9e4066Sahrens 428da6c28aaSamw /*ARGSUSED*/ 429fa9e4066Sahrens int 430fa9e4066Sahrens vn_openat(char *path, int x1, int flags, int mode, vnode_t **vpp, int x2, 431da6c28aaSamw int x3, vnode_t *startvp, int fd) 432fa9e4066Sahrens { 433fa9e4066Sahrens char *realpath = umem_alloc(strlen(path) + 2, UMEM_NOFAIL); 434fa9e4066Sahrens int ret; 435fa9e4066Sahrens 436fa9e4066Sahrens ASSERT(startvp == rootdir); 437fa9e4066Sahrens (void) sprintf(realpath, "/%s", path); 438fa9e4066Sahrens 439da6c28aaSamw /* fd ignored for now, need if want to simulate nbmand support */ 440fa9e4066Sahrens ret = vn_open(realpath, x1, flags, mode, vpp, x2, x3); 441fa9e4066Sahrens 442fa9e4066Sahrens umem_free(realpath, strlen(path) + 2); 443fa9e4066Sahrens 444fa9e4066Sahrens return (ret); 445fa9e4066Sahrens } 446fa9e4066Sahrens 447fa9e4066Sahrens /*ARGSUSED*/ 448fa9e4066Sahrens int 449fa9e4066Sahrens vn_rdwr(int uio, vnode_t *vp, void *addr, ssize_t len, offset_t offset, 450fa9e4066Sahrens int x1, int x2, rlim64_t x3, void *x4, ssize_t *residp) 451fa9e4066Sahrens { 452fa9e4066Sahrens ssize_t iolen, split; 453fa9e4066Sahrens 454fa9e4066Sahrens if (uio == UIO_READ) { 455fa9e4066Sahrens iolen = pread64(vp->v_fd, addr, len, offset); 456fa9e4066Sahrens } else { 457fa9e4066Sahrens /* 458fa9e4066Sahrens * To simulate partial disk writes, we split writes into two 459fa9e4066Sahrens * system calls so that the process can be killed in between. 460fa9e4066Sahrens */ 461ad135b5dSChristopher Siden int sectors = len >> SPA_MINBLOCKSHIFT; 462ad135b5dSChristopher Siden split = (sectors > 0 ? rand() % sectors : 0) << 463ad135b5dSChristopher Siden SPA_MINBLOCKSHIFT; 464fa9e4066Sahrens iolen = pwrite64(vp->v_fd, addr, split, offset); 465fa9e4066Sahrens iolen += pwrite64(vp->v_fd, (char *)addr + split, 466fa9e4066Sahrens len - split, offset + split); 467fa9e4066Sahrens } 468fa9e4066Sahrens 469fa9e4066Sahrens if (iolen == -1) 470fa9e4066Sahrens return (errno); 471fa9e4066Sahrens if (residp) 472fa9e4066Sahrens *residp = len - iolen; 473fa9e4066Sahrens else if (iolen != len) 474fa9e4066Sahrens return (EIO); 475fa9e4066Sahrens return (0); 476fa9e4066Sahrens } 477fa9e4066Sahrens 478fa9e4066Sahrens void 479fa9e4066Sahrens vn_close(vnode_t *vp) 480fa9e4066Sahrens { 481fa9e4066Sahrens close(vp->v_fd); 482fa9e4066Sahrens spa_strfree(vp->v_path); 483fa9e4066Sahrens umem_free(vp, sizeof (vnode_t)); 484fa9e4066Sahrens } 485fa9e4066Sahrens 486095bcd66SGeorge Wilson /* 487095bcd66SGeorge Wilson * At a minimum we need to update the size since vdev_reopen() 488095bcd66SGeorge Wilson * will no longer call vn_openat(). 489095bcd66SGeorge Wilson */ 490095bcd66SGeorge Wilson int 491095bcd66SGeorge Wilson fop_getattr(vnode_t *vp, vattr_t *vap) 492095bcd66SGeorge Wilson { 493095bcd66SGeorge Wilson struct stat64 st; 494095bcd66SGeorge Wilson 495095bcd66SGeorge Wilson if (fstat64(vp->v_fd, &st) == -1) { 496095bcd66SGeorge Wilson close(vp->v_fd); 497095bcd66SGeorge Wilson return (errno); 498095bcd66SGeorge Wilson } 499095bcd66SGeorge Wilson 500095bcd66SGeorge Wilson vap->va_size = st.st_size; 501095bcd66SGeorge Wilson return (0); 502095bcd66SGeorge Wilson } 503095bcd66SGeorge Wilson 504fa9e4066Sahrens #ifdef ZFS_DEBUG 505fa9e4066Sahrens 506fa9e4066Sahrens /* 507fa9e4066Sahrens * ========================================================================= 508fa9e4066Sahrens * Figure out which debugging statements to print 509fa9e4066Sahrens * ========================================================================= 510fa9e4066Sahrens */ 511fa9e4066Sahrens 512fa9e4066Sahrens static char *dprintf_string; 513fa9e4066Sahrens static int dprintf_print_all; 514fa9e4066Sahrens 515fa9e4066Sahrens int 516fa9e4066Sahrens dprintf_find_string(const char *string) 517fa9e4066Sahrens { 518fa9e4066Sahrens char *tmp_str = dprintf_string; 519fa9e4066Sahrens int len = strlen(string); 520fa9e4066Sahrens 521fa9e4066Sahrens /* 522fa9e4066Sahrens * Find out if this is a string we want to print. 523fa9e4066Sahrens * String format: file1.c,function_name1,file2.c,file3.c 524fa9e4066Sahrens */ 525fa9e4066Sahrens 526fa9e4066Sahrens while (tmp_str != NULL) { 527fa9e4066Sahrens if (strncmp(tmp_str, string, len) == 0 && 528fa9e4066Sahrens (tmp_str[len] == ',' || tmp_str[len] == '\0')) 529fa9e4066Sahrens return (1); 530fa9e4066Sahrens tmp_str = strchr(tmp_str, ','); 531fa9e4066Sahrens if (tmp_str != NULL) 532fa9e4066Sahrens tmp_str++; /* Get rid of , */ 533fa9e4066Sahrens } 534fa9e4066Sahrens return (0); 535fa9e4066Sahrens } 536fa9e4066Sahrens 537fa9e4066Sahrens void 538fa9e4066Sahrens dprintf_setup(int *argc, char **argv) 539fa9e4066Sahrens { 540fa9e4066Sahrens int i, j; 541fa9e4066Sahrens 542fa9e4066Sahrens /* 543fa9e4066Sahrens * Debugging can be specified two ways: by setting the 544fa9e4066Sahrens * environment variable ZFS_DEBUG, or by including a 545fa9e4066Sahrens * "debug=..." argument on the command line. The command 546fa9e4066Sahrens * line setting overrides the environment variable. 547fa9e4066Sahrens */ 548fa9e4066Sahrens 549fa9e4066Sahrens for (i = 1; i < *argc; i++) { 550fa9e4066Sahrens int len = strlen("debug="); 551fa9e4066Sahrens /* First look for a command line argument */ 552fa9e4066Sahrens if (strncmp("debug=", argv[i], len) == 0) { 553fa9e4066Sahrens dprintf_string = argv[i] + len; 554fa9e4066Sahrens /* Remove from args */ 555fa9e4066Sahrens for (j = i; j < *argc; j++) 556fa9e4066Sahrens argv[j] = argv[j+1]; 557fa9e4066Sahrens argv[j] = NULL; 558fa9e4066Sahrens (*argc)--; 559fa9e4066Sahrens } 560fa9e4066Sahrens } 561fa9e4066Sahrens 562fa9e4066Sahrens if (dprintf_string == NULL) { 563fa9e4066Sahrens /* Look for ZFS_DEBUG environment variable */ 564fa9e4066Sahrens dprintf_string = getenv("ZFS_DEBUG"); 565fa9e4066Sahrens } 566fa9e4066Sahrens 567fa9e4066Sahrens /* 568fa9e4066Sahrens * Are we just turning on all debugging? 569fa9e4066Sahrens */ 570fa9e4066Sahrens if (dprintf_find_string("on")) 571fa9e4066Sahrens dprintf_print_all = 1; 572fa9e4066Sahrens } 573fa9e4066Sahrens 574fa9e4066Sahrens /* 575fa9e4066Sahrens * ========================================================================= 576fa9e4066Sahrens * debug printfs 577fa9e4066Sahrens * ========================================================================= 578fa9e4066Sahrens */ 579fa9e4066Sahrens void 580fa9e4066Sahrens __dprintf(const char *file, const char *func, int line, const char *fmt, ...) 581fa9e4066Sahrens { 582fa9e4066Sahrens const char *newfile; 583fa9e4066Sahrens va_list adx; 584fa9e4066Sahrens 585fa9e4066Sahrens /* 586fa9e4066Sahrens * Get rid of annoying "../common/" prefix to filename. 587fa9e4066Sahrens */ 588fa9e4066Sahrens newfile = strrchr(file, '/'); 589fa9e4066Sahrens if (newfile != NULL) { 590fa9e4066Sahrens newfile = newfile + 1; /* Get rid of leading / */ 591fa9e4066Sahrens } else { 592fa9e4066Sahrens newfile = file; 593fa9e4066Sahrens } 594fa9e4066Sahrens 595fa9e4066Sahrens if (dprintf_print_all || 596fa9e4066Sahrens dprintf_find_string(newfile) || 597fa9e4066Sahrens dprintf_find_string(func)) { 598fa9e4066Sahrens /* Print out just the function name if requested */ 599fa9e4066Sahrens flockfile(stdout); 600fa9e4066Sahrens if (dprintf_find_string("pid")) 601fa9e4066Sahrens (void) printf("%d ", getpid()); 602fa9e4066Sahrens if (dprintf_find_string("tid")) 603fa9e4066Sahrens (void) printf("%u ", thr_self()); 604fa9e4066Sahrens if (dprintf_find_string("cpu")) 605fa9e4066Sahrens (void) printf("%u ", getcpuid()); 606fa9e4066Sahrens if (dprintf_find_string("time")) 607fa9e4066Sahrens (void) printf("%llu ", gethrtime()); 608fa9e4066Sahrens if (dprintf_find_string("long")) 609fa9e4066Sahrens (void) printf("%s, line %d: ", newfile, line); 610fa9e4066Sahrens (void) printf("%s: ", func); 611fa9e4066Sahrens va_start(adx, fmt); 612fa9e4066Sahrens (void) vprintf(fmt, adx); 613fa9e4066Sahrens va_end(adx); 614fa9e4066Sahrens funlockfile(stdout); 615fa9e4066Sahrens } 616fa9e4066Sahrens } 617fa9e4066Sahrens 618fa9e4066Sahrens #endif /* ZFS_DEBUG */ 619fa9e4066Sahrens 620fa9e4066Sahrens /* 621fa9e4066Sahrens * ========================================================================= 622fa9e4066Sahrens * cmn_err() and panic() 623fa9e4066Sahrens * ========================================================================= 624fa9e4066Sahrens */ 625fa9e4066Sahrens static char ce_prefix[CE_IGNORE][10] = { "", "NOTICE: ", "WARNING: ", "" }; 626fa9e4066Sahrens static char ce_suffix[CE_IGNORE][2] = { "", "\n", "\n", "" }; 627fa9e4066Sahrens 628fa9e4066Sahrens void 629fa9e4066Sahrens vpanic(const char *fmt, va_list adx) 630fa9e4066Sahrens { 631fa9e4066Sahrens (void) fprintf(stderr, "error: "); 632fa9e4066Sahrens (void) vfprintf(stderr, fmt, adx); 633fa9e4066Sahrens (void) fprintf(stderr, "\n"); 634fa9e4066Sahrens 635fa9e4066Sahrens abort(); /* think of it as a "user-level crash dump" */ 636fa9e4066Sahrens } 637fa9e4066Sahrens 638fa9e4066Sahrens void 639fa9e4066Sahrens panic(const char *fmt, ...) 640fa9e4066Sahrens { 641fa9e4066Sahrens va_list adx; 642fa9e4066Sahrens 643fa9e4066Sahrens va_start(adx, fmt); 644fa9e4066Sahrens vpanic(fmt, adx); 645fa9e4066Sahrens va_end(adx); 646fa9e4066Sahrens } 647fa9e4066Sahrens 648fa9e4066Sahrens void 6490125049cSahrens vcmn_err(int ce, const char *fmt, va_list adx) 650fa9e4066Sahrens { 651fa9e4066Sahrens if (ce == CE_PANIC) 652fa9e4066Sahrens vpanic(fmt, adx); 653fa9e4066Sahrens if (ce != CE_NOTE) { /* suppress noise in userland stress testing */ 654fa9e4066Sahrens (void) fprintf(stderr, "%s", ce_prefix[ce]); 655fa9e4066Sahrens (void) vfprintf(stderr, fmt, adx); 656fa9e4066Sahrens (void) fprintf(stderr, "%s", ce_suffix[ce]); 657fa9e4066Sahrens } 6580125049cSahrens } 6590125049cSahrens 6600125049cSahrens /*PRINTFLIKE2*/ 6610125049cSahrens void 6620125049cSahrens cmn_err(int ce, const char *fmt, ...) 6630125049cSahrens { 6640125049cSahrens va_list adx; 6650125049cSahrens 6660125049cSahrens va_start(adx, fmt); 6670125049cSahrens vcmn_err(ce, fmt, adx); 668fa9e4066Sahrens va_end(adx); 669fa9e4066Sahrens } 670fa9e4066Sahrens 671ea8dc4b6Seschrock /* 672ea8dc4b6Seschrock * ========================================================================= 673ea8dc4b6Seschrock * kobj interfaces 674ea8dc4b6Seschrock * ========================================================================= 675ea8dc4b6Seschrock */ 676ea8dc4b6Seschrock struct _buf * 677ea8dc4b6Seschrock kobj_open_file(char *name) 678ea8dc4b6Seschrock { 679ea8dc4b6Seschrock struct _buf *file; 680ea8dc4b6Seschrock vnode_t *vp; 681ea8dc4b6Seschrock 682ea8dc4b6Seschrock /* set vp as the _fd field of the file */ 683da6c28aaSamw if (vn_openat(name, UIO_SYSSPACE, FREAD, 0, &vp, 0, 0, rootdir, 684da6c28aaSamw -1) != 0) 685ea8dc4b6Seschrock return ((void *)-1UL); 686ea8dc4b6Seschrock 687ea8dc4b6Seschrock file = umem_zalloc(sizeof (struct _buf), UMEM_NOFAIL); 688ea8dc4b6Seschrock file->_fd = (intptr_t)vp; 689ea8dc4b6Seschrock return (file); 690ea8dc4b6Seschrock } 691ea8dc4b6Seschrock 692ea8dc4b6Seschrock int 693ea8dc4b6Seschrock kobj_read_file(struct _buf *file, char *buf, unsigned size, unsigned off) 694ea8dc4b6Seschrock { 695ea8dc4b6Seschrock ssize_t resid; 696ea8dc4b6Seschrock 697ea8dc4b6Seschrock vn_rdwr(UIO_READ, (vnode_t *)file->_fd, buf, size, (offset_t)off, 698ea8dc4b6Seschrock UIO_SYSSPACE, 0, 0, 0, &resid); 699ea8dc4b6Seschrock 700b1b8ab34Slling return (size - resid); 701ea8dc4b6Seschrock } 702ea8dc4b6Seschrock 703ea8dc4b6Seschrock void 704ea8dc4b6Seschrock kobj_close_file(struct _buf *file) 705ea8dc4b6Seschrock { 706ea8dc4b6Seschrock vn_close((vnode_t *)file->_fd); 707ea8dc4b6Seschrock umem_free(file, sizeof (struct _buf)); 708ea8dc4b6Seschrock } 709ea8dc4b6Seschrock 710ea8dc4b6Seschrock int 711b1b8ab34Slling kobj_get_filesize(struct _buf *file, uint64_t *size) 712ea8dc4b6Seschrock { 713ea8dc4b6Seschrock struct stat64 st; 714b1b8ab34Slling vnode_t *vp = (vnode_t *)file->_fd; 715b1b8ab34Slling 716ea8dc4b6Seschrock if (fstat64(vp->v_fd, &st) == -1) { 717ea8dc4b6Seschrock vn_close(vp); 718ea8dc4b6Seschrock return (errno); 719ea8dc4b6Seschrock } 720b1b8ab34Slling *size = st.st_size; 721ea8dc4b6Seschrock return (0); 722ea8dc4b6Seschrock } 723ea8dc4b6Seschrock 724fa9e4066Sahrens /* 725fa9e4066Sahrens * ========================================================================= 726fa9e4066Sahrens * misc routines 727fa9e4066Sahrens * ========================================================================= 728fa9e4066Sahrens */ 729fa9e4066Sahrens 730fa9e4066Sahrens void 731fa9e4066Sahrens delay(clock_t ticks) 732fa9e4066Sahrens { 733fa9e4066Sahrens poll(0, 0, ticks * (1000 / hz)); 734fa9e4066Sahrens } 735fa9e4066Sahrens 736fa9e4066Sahrens /* 737fa9e4066Sahrens * Find highest one bit set. 738fa9e4066Sahrens * Returns bit number + 1 of highest bit that is set, otherwise returns 0. 739fa9e4066Sahrens * High order bit is 31 (or 63 in _LP64 kernel). 740fa9e4066Sahrens */ 741fa9e4066Sahrens int 742fa9e4066Sahrens highbit(ulong_t i) 743fa9e4066Sahrens { 744fa9e4066Sahrens register int h = 1; 745fa9e4066Sahrens 746fa9e4066Sahrens if (i == 0) 747fa9e4066Sahrens return (0); 748fa9e4066Sahrens #ifdef _LP64 749fa9e4066Sahrens if (i & 0xffffffff00000000ul) { 750fa9e4066Sahrens h += 32; i >>= 32; 751fa9e4066Sahrens } 752fa9e4066Sahrens #endif 753fa9e4066Sahrens if (i & 0xffff0000) { 754fa9e4066Sahrens h += 16; i >>= 16; 755fa9e4066Sahrens } 756fa9e4066Sahrens if (i & 0xff00) { 757fa9e4066Sahrens h += 8; i >>= 8; 758fa9e4066Sahrens } 759fa9e4066Sahrens if (i & 0xf0) { 760fa9e4066Sahrens h += 4; i >>= 4; 761fa9e4066Sahrens } 762fa9e4066Sahrens if (i & 0xc) { 763fa9e4066Sahrens h += 2; i >>= 2; 764fa9e4066Sahrens } 765fa9e4066Sahrens if (i & 0x2) { 766fa9e4066Sahrens h += 1; 767fa9e4066Sahrens } 768fa9e4066Sahrens return (h); 769fa9e4066Sahrens } 770fa9e4066Sahrens 77117f17c2dSbonwick static int random_fd = -1, urandom_fd = -1; 77217f17c2dSbonwick 773fa9e4066Sahrens static int 77417f17c2dSbonwick random_get_bytes_common(uint8_t *ptr, size_t len, int fd) 775fa9e4066Sahrens { 776fa9e4066Sahrens size_t resid = len; 777fa9e4066Sahrens ssize_t bytes; 778fa9e4066Sahrens 779fa9e4066Sahrens ASSERT(fd != -1); 780fa9e4066Sahrens 781fa9e4066Sahrens while (resid != 0) { 782fa9e4066Sahrens bytes = read(fd, ptr, resid); 78317f17c2dSbonwick ASSERT3S(bytes, >=, 0); 784fa9e4066Sahrens ptr += bytes; 785fa9e4066Sahrens resid -= bytes; 786fa9e4066Sahrens } 787fa9e4066Sahrens 788fa9e4066Sahrens return (0); 789fa9e4066Sahrens } 790fa9e4066Sahrens 791fa9e4066Sahrens int 792fa9e4066Sahrens random_get_bytes(uint8_t *ptr, size_t len) 793fa9e4066Sahrens { 79417f17c2dSbonwick return (random_get_bytes_common(ptr, len, random_fd)); 795fa9e4066Sahrens } 796fa9e4066Sahrens 797fa9e4066Sahrens int 798fa9e4066Sahrens random_get_pseudo_bytes(uint8_t *ptr, size_t len) 799fa9e4066Sahrens { 80017f17c2dSbonwick return (random_get_bytes_common(ptr, len, urandom_fd)); 801fa9e4066Sahrens } 802fa9e4066Sahrens 80395173954Sek int 80495173954Sek ddi_strtoul(const char *hw_serial, char **nptr, int base, unsigned long *result) 80595173954Sek { 80695173954Sek char *end; 80795173954Sek 80895173954Sek *result = strtoul(hw_serial, &end, base); 80995173954Sek if (*result == 0) 81095173954Sek return (errno); 81195173954Sek return (0); 81295173954Sek } 81395173954Sek 8140a586ceaSMark Shellenbaum int 8150a586ceaSMark Shellenbaum ddi_strtoull(const char *str, char **nptr, int base, u_longlong_t *result) 8160a586ceaSMark Shellenbaum { 8170a586ceaSMark Shellenbaum char *end; 8180a586ceaSMark Shellenbaum 8190a586ceaSMark Shellenbaum *result = strtoull(str, &end, base); 8200a586ceaSMark Shellenbaum if (*result == 0) 8210a586ceaSMark Shellenbaum return (errno); 8220a586ceaSMark Shellenbaum return (0); 8230a586ceaSMark Shellenbaum } 8240a586ceaSMark Shellenbaum 825283b8460SGeorge.Wilson /* ARGSUSED */ 826283b8460SGeorge.Wilson cyclic_id_t 827283b8460SGeorge.Wilson cyclic_add(cyc_handler_t *hdlr, cyc_time_t *when) 828283b8460SGeorge.Wilson { 829283b8460SGeorge.Wilson return (1); 830283b8460SGeorge.Wilson } 831283b8460SGeorge.Wilson 832283b8460SGeorge.Wilson /* ARGSUSED */ 833283b8460SGeorge.Wilson void 834283b8460SGeorge.Wilson cyclic_remove(cyclic_id_t id) 835283b8460SGeorge.Wilson { 836283b8460SGeorge.Wilson } 837283b8460SGeorge.Wilson 838283b8460SGeorge.Wilson /* ARGSUSED */ 839283b8460SGeorge.Wilson int 840283b8460SGeorge.Wilson cyclic_reprogram(cyclic_id_t id, hrtime_t expiration) 841283b8460SGeorge.Wilson { 842283b8460SGeorge.Wilson return (1); 843283b8460SGeorge.Wilson } 844283b8460SGeorge.Wilson 845fa9e4066Sahrens /* 846fa9e4066Sahrens * ========================================================================= 847fa9e4066Sahrens * kernel emulation setup & teardown 848fa9e4066Sahrens * ========================================================================= 849fa9e4066Sahrens */ 850fa9e4066Sahrens static int 851fa9e4066Sahrens umem_out_of_memory(void) 852fa9e4066Sahrens { 853fa9e4066Sahrens char errmsg[] = "out of memory -- generating core dump\n"; 854fa9e4066Sahrens 855fa9e4066Sahrens write(fileno(stderr), errmsg, sizeof (errmsg)); 856fa9e4066Sahrens abort(); 857fa9e4066Sahrens return (0); 858fa9e4066Sahrens } 859fa9e4066Sahrens 860fa9e4066Sahrens void 861fa9e4066Sahrens kernel_init(int mode) 862fa9e4066Sahrens { 863*3b2aab18SMatthew Ahrens extern uint_t rrw_tsd_key; 864*3b2aab18SMatthew Ahrens 865fa9e4066Sahrens umem_nofail_callback(umem_out_of_memory); 866fa9e4066Sahrens 867fa9e4066Sahrens physmem = sysconf(_SC_PHYS_PAGES); 868fa9e4066Sahrens 869fa9e4066Sahrens dprintf("physmem = %llu pages (%.2f GB)\n", physmem, 870fa9e4066Sahrens (double)physmem * sysconf(_SC_PAGE_SIZE) / (1ULL << 30)); 871fa9e4066Sahrens 8723ad6c7f9SVictor Latushkin (void) snprintf(hw_serial, sizeof (hw_serial), "%ld", 8733ad6c7f9SVictor Latushkin (mode & FWRITE) ? gethostid() : 0); 87495173954Sek 87517f17c2dSbonwick VERIFY((random_fd = open("/dev/random", O_RDONLY)) != -1); 87617f17c2dSbonwick VERIFY((urandom_fd = open("/dev/urandom", O_RDONLY)) != -1); 87717f17c2dSbonwick 87888b7b0f2SMatthew Ahrens system_taskq_init(); 87988b7b0f2SMatthew Ahrens 880283b8460SGeorge.Wilson mutex_init(&cpu_lock, NULL, MUTEX_DEFAULT, NULL); 881283b8460SGeorge.Wilson 882fa9e4066Sahrens spa_init(mode); 883*3b2aab18SMatthew Ahrens 884*3b2aab18SMatthew Ahrens tsd_create(&rrw_tsd_key, rrw_tsd_destroy); 885fa9e4066Sahrens } 886fa9e4066Sahrens 887fa9e4066Sahrens void 888fa9e4066Sahrens kernel_fini(void) 889fa9e4066Sahrens { 890fa9e4066Sahrens spa_fini(); 89117f17c2dSbonwick 892d20e665cSRicardo M. Correia system_taskq_fini(); 893d20e665cSRicardo M. Correia 89417f17c2dSbonwick close(random_fd); 89517f17c2dSbonwick close(urandom_fd); 89617f17c2dSbonwick 89717f17c2dSbonwick random_fd = -1; 89817f17c2dSbonwick urandom_fd = -1; 899fa9e4066Sahrens } 900c9431fa1Sahl 901c9431fa1Sahl int 902c9431fa1Sahl z_uncompress(void *dst, size_t *dstlen, const void *src, size_t srclen) 903c9431fa1Sahl { 904c9431fa1Sahl int ret; 905c9431fa1Sahl uLongf len = *dstlen; 906c9431fa1Sahl 907c9431fa1Sahl if ((ret = uncompress(dst, &len, src, srclen)) == Z_OK) 908c9431fa1Sahl *dstlen = (size_t)len; 909c9431fa1Sahl 910c9431fa1Sahl return (ret); 911c9431fa1Sahl } 912c9431fa1Sahl 913c9431fa1Sahl int 914c9431fa1Sahl z_compress_level(void *dst, size_t *dstlen, const void *src, size_t srclen, 915c9431fa1Sahl int level) 916c9431fa1Sahl { 917c9431fa1Sahl int ret; 918c9431fa1Sahl uLongf len = *dstlen; 919c9431fa1Sahl 920c9431fa1Sahl if ((ret = compress2(dst, &len, src, srclen, level)) == Z_OK) 921c9431fa1Sahl *dstlen = (size_t)len; 922c9431fa1Sahl 923c9431fa1Sahl return (ret); 924c9431fa1Sahl } 925ecd6cf80Smarks 926ecd6cf80Smarks uid_t 927ecd6cf80Smarks crgetuid(cred_t *cr) 928ecd6cf80Smarks { 929ecd6cf80Smarks return (0); 930ecd6cf80Smarks } 931ecd6cf80Smarks 9324445fffbSMatthew Ahrens uid_t 9334445fffbSMatthew Ahrens crgetruid(cred_t *cr) 9344445fffbSMatthew Ahrens { 9354445fffbSMatthew Ahrens return (0); 9364445fffbSMatthew Ahrens } 9374445fffbSMatthew Ahrens 938ecd6cf80Smarks gid_t 939ecd6cf80Smarks crgetgid(cred_t *cr) 940ecd6cf80Smarks { 941ecd6cf80Smarks return (0); 942ecd6cf80Smarks } 943ecd6cf80Smarks 944ecd6cf80Smarks int 945ecd6cf80Smarks crgetngroups(cred_t *cr) 946ecd6cf80Smarks { 947ecd6cf80Smarks return (0); 948ecd6cf80Smarks } 949ecd6cf80Smarks 950ecd6cf80Smarks gid_t * 951ecd6cf80Smarks crgetgroups(cred_t *cr) 952ecd6cf80Smarks { 953ecd6cf80Smarks return (NULL); 954ecd6cf80Smarks } 955ecd6cf80Smarks 956ecd6cf80Smarks int 957ecd6cf80Smarks zfs_secpolicy_snapshot_perms(const char *name, cred_t *cr) 958ecd6cf80Smarks { 959ecd6cf80Smarks return (0); 960ecd6cf80Smarks } 961ecd6cf80Smarks 962ecd6cf80Smarks int 963ecd6cf80Smarks zfs_secpolicy_rename_perms(const char *from, const char *to, cred_t *cr) 964ecd6cf80Smarks { 965ecd6cf80Smarks return (0); 966ecd6cf80Smarks } 967ecd6cf80Smarks 968ecd6cf80Smarks int 969ecd6cf80Smarks zfs_secpolicy_destroy_perms(const char *name, cred_t *cr) 970ecd6cf80Smarks { 971ecd6cf80Smarks return (0); 972ecd6cf80Smarks } 973e0d35c44Smarks 974e0d35c44Smarks ksiddomain_t * 975e0d35c44Smarks ksid_lookupdomain(const char *dom) 976e0d35c44Smarks { 977e0d35c44Smarks ksiddomain_t *kd; 978e0d35c44Smarks 979e0d35c44Smarks kd = umem_zalloc(sizeof (ksiddomain_t), UMEM_NOFAIL); 980e0d35c44Smarks kd->kd_name = spa_strdup(dom); 981e0d35c44Smarks return (kd); 982e0d35c44Smarks } 983e0d35c44Smarks 984e0d35c44Smarks void 985e0d35c44Smarks ksiddomain_rele(ksiddomain_t *ksid) 986e0d35c44Smarks { 987e0d35c44Smarks spa_strfree(ksid->kd_name); 988e0d35c44Smarks umem_free(ksid, sizeof (ksiddomain_t)); 989e0d35c44Smarks } 990ae46e4c7SMatthew Ahrens 991ae46e4c7SMatthew Ahrens /* 992ae46e4c7SMatthew Ahrens * Do not change the length of the returned string; it must be freed 993ae46e4c7SMatthew Ahrens * with strfree(). 994ae46e4c7SMatthew Ahrens */ 995ae46e4c7SMatthew Ahrens char * 996ae46e4c7SMatthew Ahrens kmem_asprintf(const char *fmt, ...) 997ae46e4c7SMatthew Ahrens { 998ae46e4c7SMatthew Ahrens int size; 999ae46e4c7SMatthew Ahrens va_list adx; 1000ae46e4c7SMatthew Ahrens char *buf; 1001ae46e4c7SMatthew Ahrens 1002ae46e4c7SMatthew Ahrens va_start(adx, fmt); 1003ae46e4c7SMatthew Ahrens size = vsnprintf(NULL, 0, fmt, adx) + 1; 1004ae46e4c7SMatthew Ahrens va_end(adx); 1005ae46e4c7SMatthew Ahrens 1006ae46e4c7SMatthew Ahrens buf = kmem_alloc(size, KM_SLEEP); 1007ae46e4c7SMatthew Ahrens 1008ae46e4c7SMatthew Ahrens va_start(adx, fmt); 1009ae46e4c7SMatthew Ahrens size = vsnprintf(buf, size, fmt, adx); 1010ae46e4c7SMatthew Ahrens va_end(adx); 1011ae46e4c7SMatthew Ahrens 1012ae46e4c7SMatthew Ahrens return (buf); 1013ae46e4c7SMatthew Ahrens } 1014c99e4bdcSChris Kirby 1015c99e4bdcSChris Kirby /* ARGSUSED */ 1016c99e4bdcSChris Kirby int 1017a7f53a56SChris Kirby zfs_onexit_fd_hold(int fd, minor_t *minorp) 1018a7f53a56SChris Kirby { 1019a7f53a56SChris Kirby *minorp = 0; 1020a7f53a56SChris Kirby return (0); 1021a7f53a56SChris Kirby } 1022a7f53a56SChris Kirby 1023a7f53a56SChris Kirby /* ARGSUSED */ 1024a7f53a56SChris Kirby void 1025a7f53a56SChris Kirby zfs_onexit_fd_rele(int fd) 1026a7f53a56SChris Kirby { 1027a7f53a56SChris Kirby } 1028a7f53a56SChris Kirby 1029a7f53a56SChris Kirby /* ARGSUSED */ 1030a7f53a56SChris Kirby int 1031a7f53a56SChris Kirby zfs_onexit_add_cb(minor_t minor, void (*func)(void *), void *data, 1032c99e4bdcSChris Kirby uint64_t *action_handle) 1033c99e4bdcSChris Kirby { 1034c99e4bdcSChris Kirby return (0); 1035c99e4bdcSChris Kirby } 1036c99e4bdcSChris Kirby 1037c99e4bdcSChris Kirby /* ARGSUSED */ 1038c99e4bdcSChris Kirby int 1039a7f53a56SChris Kirby zfs_onexit_del_cb(minor_t minor, uint64_t action_handle, boolean_t fire) 1040c99e4bdcSChris Kirby { 1041c99e4bdcSChris Kirby return (0); 1042c99e4bdcSChris Kirby } 1043c99e4bdcSChris Kirby 1044c99e4bdcSChris Kirby /* ARGSUSED */ 1045c99e4bdcSChris Kirby int 1046a7f53a56SChris Kirby zfs_onexit_cb_data(minor_t minor, uint64_t action_handle, void **data) 1047c99e4bdcSChris Kirby { 1048c99e4bdcSChris Kirby return (0); 1049c99e4bdcSChris Kirby } 105031d7e8faSGeorge Wilson 105131d7e8faSGeorge Wilson void 105231d7e8faSGeorge Wilson bioinit(buf_t *bp) 105331d7e8faSGeorge Wilson { 105431d7e8faSGeorge Wilson bzero(bp, sizeof (buf_t)); 105531d7e8faSGeorge Wilson } 105631d7e8faSGeorge Wilson 105731d7e8faSGeorge Wilson void 105831d7e8faSGeorge Wilson biodone(buf_t *bp) 105931d7e8faSGeorge Wilson { 106031d7e8faSGeorge Wilson if (bp->b_iodone != NULL) { 106131d7e8faSGeorge Wilson (*(bp->b_iodone))(bp); 106231d7e8faSGeorge Wilson return; 106331d7e8faSGeorge Wilson } 106431d7e8faSGeorge Wilson ASSERT((bp->b_flags & B_DONE) == 0); 106531d7e8faSGeorge Wilson bp->b_flags |= B_DONE; 106631d7e8faSGeorge Wilson } 106731d7e8faSGeorge Wilson 106831d7e8faSGeorge Wilson void 106931d7e8faSGeorge Wilson bioerror(buf_t *bp, int error) 107031d7e8faSGeorge Wilson { 107131d7e8faSGeorge Wilson ASSERT(bp != NULL); 107231d7e8faSGeorge Wilson ASSERT(error >= 0); 107331d7e8faSGeorge Wilson 107431d7e8faSGeorge Wilson if (error != 0) { 107531d7e8faSGeorge Wilson bp->b_flags |= B_ERROR; 107631d7e8faSGeorge Wilson } else { 107731d7e8faSGeorge Wilson bp->b_flags &= ~B_ERROR; 107831d7e8faSGeorge Wilson } 107931d7e8faSGeorge Wilson bp->b_error = error; 108031d7e8faSGeorge Wilson } 108131d7e8faSGeorge Wilson 108231d7e8faSGeorge Wilson 108331d7e8faSGeorge Wilson int 108431d7e8faSGeorge Wilson geterror(struct buf *bp) 108531d7e8faSGeorge Wilson { 108631d7e8faSGeorge Wilson int error = 0; 108731d7e8faSGeorge Wilson 108831d7e8faSGeorge Wilson if (bp->b_flags & B_ERROR) { 108931d7e8faSGeorge Wilson error = bp->b_error; 109031d7e8faSGeorge Wilson if (!error) 109131d7e8faSGeorge Wilson error = EIO; 109231d7e8faSGeorge Wilson } 109331d7e8faSGeorge Wilson return (error); 109431d7e8faSGeorge Wilson } 1095