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 /* 2244cb6abcSbmc * Copyright 2007 Sun Microsystems, Inc. All rights reserved. 23fa9e4066Sahrens * Use is subject to license terms. 24fa9e4066Sahrens */ 25fa9e4066Sahrens 26fa9e4066Sahrens #pragma ident "%Z%%M% %I% %E% SMI" 27fa9e4066Sahrens 28fa9e4066Sahrens #include <assert.h> 29c9431fa1Sahl #include <fcntl.h> 30fa9e4066Sahrens #include <poll.h> 31fa9e4066Sahrens #include <stdio.h> 32fa9e4066Sahrens #include <stdlib.h> 33c9431fa1Sahl #include <string.h> 34c9431fa1Sahl #include <zlib.h> 35fa9e4066Sahrens #include <sys/spa.h> 36c9431fa1Sahl #include <sys/stat.h> 37fa9e4066Sahrens #include <sys/processor.h> 38c9431fa1Sahl #include <sys/zfs_context.h> 39c9431fa1Sahl #include <sys/zmod.h> 4095173954Sek #include <sys/utsname.h> 415ad82045Snd 42fa9e4066Sahrens /* 43fa9e4066Sahrens * Emulation of kernel services in userland. 44fa9e4066Sahrens */ 45fa9e4066Sahrens 46fa9e4066Sahrens uint64_t physmem; 47fa9e4066Sahrens vnode_t *rootdir = (vnode_t *)0xabcd1234; 4895173954Sek char hw_serial[11]; 4995173954Sek 5095173954Sek struct utsname utsname = { 5195173954Sek "userland", "libzpool", "1", "1", "na" 5295173954Sek }; 53fa9e4066Sahrens 54fa9e4066Sahrens /* 55fa9e4066Sahrens * ========================================================================= 56fa9e4066Sahrens * threads 57fa9e4066Sahrens * ========================================================================= 58fa9e4066Sahrens */ 59fa9e4066Sahrens /*ARGSUSED*/ 60fa9e4066Sahrens kthread_t * 61fa9e4066Sahrens zk_thread_create(void (*func)(), void *arg) 62fa9e4066Sahrens { 63fa9e4066Sahrens thread_t tid; 64fa9e4066Sahrens 65fa9e4066Sahrens VERIFY(thr_create(0, 0, (void *(*)(void *))func, arg, THR_DETACHED, 66fa9e4066Sahrens &tid) == 0); 67fa9e4066Sahrens 68fa9e4066Sahrens return ((void *)(uintptr_t)tid); 69fa9e4066Sahrens } 70fa9e4066Sahrens 7144cb6abcSbmc /* 7244cb6abcSbmc * ========================================================================= 7344cb6abcSbmc * kstats 7444cb6abcSbmc * ========================================================================= 7544cb6abcSbmc */ 7644cb6abcSbmc /*ARGSUSED*/ 7744cb6abcSbmc kstat_t * 7844cb6abcSbmc kstat_create(char *module, int instance, char *name, char *class, 7944cb6abcSbmc uchar_t type, ulong_t ndata, uchar_t ks_flag) 8044cb6abcSbmc { 8144cb6abcSbmc return (NULL); 8244cb6abcSbmc } 8344cb6abcSbmc 8444cb6abcSbmc /*ARGSUSED*/ 8544cb6abcSbmc void 8644cb6abcSbmc kstat_install(kstat_t *ksp) 8744cb6abcSbmc {} 8844cb6abcSbmc 8944cb6abcSbmc /*ARGSUSED*/ 9044cb6abcSbmc void 9144cb6abcSbmc kstat_delete(kstat_t *ksp) 9244cb6abcSbmc {} 9344cb6abcSbmc 94fa9e4066Sahrens /* 95fa9e4066Sahrens * ========================================================================= 96fa9e4066Sahrens * mutexes 97fa9e4066Sahrens * ========================================================================= 98fa9e4066Sahrens */ 99fa9e4066Sahrens void 100fa9e4066Sahrens zmutex_init(kmutex_t *mp) 101fa9e4066Sahrens { 102fa9e4066Sahrens mp->m_owner = NULL; 103c25056deSgw mp->initialized = B_TRUE; 104fa9e4066Sahrens (void) _mutex_init(&mp->m_lock, USYNC_THREAD, NULL); 105fa9e4066Sahrens } 106fa9e4066Sahrens 107fa9e4066Sahrens void 108fa9e4066Sahrens zmutex_destroy(kmutex_t *mp) 109fa9e4066Sahrens { 110c25056deSgw ASSERT(mp->initialized == B_TRUE); 111fa9e4066Sahrens ASSERT(mp->m_owner == NULL); 112fa9e4066Sahrens (void) _mutex_destroy(&(mp)->m_lock); 113fa9e4066Sahrens mp->m_owner = (void *)-1UL; 114c25056deSgw mp->initialized = B_FALSE; 115fa9e4066Sahrens } 116fa9e4066Sahrens 117fa9e4066Sahrens void 118fa9e4066Sahrens mutex_enter(kmutex_t *mp) 119fa9e4066Sahrens { 120c25056deSgw ASSERT(mp->initialized == B_TRUE); 121fa9e4066Sahrens ASSERT(mp->m_owner != (void *)-1UL); 122fa9e4066Sahrens ASSERT(mp->m_owner != curthread); 1235ad82045Snd VERIFY(mutex_lock(&mp->m_lock) == 0); 124fa9e4066Sahrens ASSERT(mp->m_owner == NULL); 125fa9e4066Sahrens mp->m_owner = curthread; 126fa9e4066Sahrens } 127fa9e4066Sahrens 128fa9e4066Sahrens int 129fa9e4066Sahrens mutex_tryenter(kmutex_t *mp) 130fa9e4066Sahrens { 131c25056deSgw ASSERT(mp->initialized == B_TRUE); 132fa9e4066Sahrens ASSERT(mp->m_owner != (void *)-1UL); 133fa9e4066Sahrens if (0 == mutex_trylock(&mp->m_lock)) { 134fa9e4066Sahrens ASSERT(mp->m_owner == NULL); 135fa9e4066Sahrens mp->m_owner = curthread; 136fa9e4066Sahrens return (1); 137fa9e4066Sahrens } else { 138fa9e4066Sahrens return (0); 139fa9e4066Sahrens } 140fa9e4066Sahrens } 141fa9e4066Sahrens 142fa9e4066Sahrens void 143fa9e4066Sahrens mutex_exit(kmutex_t *mp) 144fa9e4066Sahrens { 145c25056deSgw ASSERT(mp->initialized == B_TRUE); 146fa9e4066Sahrens ASSERT(mutex_owner(mp) == curthread); 147fa9e4066Sahrens mp->m_owner = NULL; 1485ad82045Snd VERIFY(mutex_unlock(&mp->m_lock) == 0); 149fa9e4066Sahrens } 150fa9e4066Sahrens 151fa9e4066Sahrens void * 152fa9e4066Sahrens mutex_owner(kmutex_t *mp) 153fa9e4066Sahrens { 154c25056deSgw ASSERT(mp->initialized == B_TRUE); 155fa9e4066Sahrens return (mp->m_owner); 156fa9e4066Sahrens } 157fa9e4066Sahrens 158fa9e4066Sahrens /* 159fa9e4066Sahrens * ========================================================================= 160fa9e4066Sahrens * rwlocks 161fa9e4066Sahrens * ========================================================================= 162fa9e4066Sahrens */ 163fa9e4066Sahrens /*ARGSUSED*/ 164fa9e4066Sahrens void 165fa9e4066Sahrens rw_init(krwlock_t *rwlp, char *name, int type, void *arg) 166fa9e4066Sahrens { 167fa9e4066Sahrens rwlock_init(&rwlp->rw_lock, USYNC_THREAD, NULL); 168fa9e4066Sahrens rwlp->rw_owner = NULL; 169c25056deSgw rwlp->initialized = B_TRUE; 170fa9e4066Sahrens } 171fa9e4066Sahrens 172fa9e4066Sahrens void 173fa9e4066Sahrens rw_destroy(krwlock_t *rwlp) 174fa9e4066Sahrens { 175fa9e4066Sahrens rwlock_destroy(&rwlp->rw_lock); 176fa9e4066Sahrens rwlp->rw_owner = (void *)-1UL; 177c25056deSgw rwlp->initialized = B_FALSE; 178fa9e4066Sahrens } 179fa9e4066Sahrens 180fa9e4066Sahrens void 181fa9e4066Sahrens rw_enter(krwlock_t *rwlp, krw_t rw) 182fa9e4066Sahrens { 183fa9e4066Sahrens ASSERT(!RW_LOCK_HELD(rwlp)); 184c25056deSgw ASSERT(rwlp->initialized == B_TRUE); 185fa9e4066Sahrens ASSERT(rwlp->rw_owner != (void *)-1UL); 186fa9e4066Sahrens ASSERT(rwlp->rw_owner != curthread); 187fa9e4066Sahrens 188fa9e4066Sahrens if (rw == RW_READER) 189fa9e4066Sahrens (void) rw_rdlock(&rwlp->rw_lock); 190fa9e4066Sahrens else 191fa9e4066Sahrens (void) rw_wrlock(&rwlp->rw_lock); 192fa9e4066Sahrens 193fa9e4066Sahrens rwlp->rw_owner = curthread; 194fa9e4066Sahrens } 195fa9e4066Sahrens 196fa9e4066Sahrens void 197fa9e4066Sahrens rw_exit(krwlock_t *rwlp) 198fa9e4066Sahrens { 199c25056deSgw ASSERT(rwlp->initialized == B_TRUE); 200fa9e4066Sahrens ASSERT(rwlp->rw_owner != (void *)-1UL); 201fa9e4066Sahrens 202fa9e4066Sahrens rwlp->rw_owner = NULL; 203fa9e4066Sahrens (void) rw_unlock(&rwlp->rw_lock); 204fa9e4066Sahrens } 205fa9e4066Sahrens 206fa9e4066Sahrens int 207fa9e4066Sahrens rw_tryenter(krwlock_t *rwlp, krw_t rw) 208fa9e4066Sahrens { 209fa9e4066Sahrens int rv; 210fa9e4066Sahrens 211c25056deSgw ASSERT(rwlp->initialized == B_TRUE); 212fa9e4066Sahrens ASSERT(rwlp->rw_owner != (void *)-1UL); 213fa9e4066Sahrens 214fa9e4066Sahrens if (rw == RW_READER) 215fa9e4066Sahrens rv = rw_tryrdlock(&rwlp->rw_lock); 216fa9e4066Sahrens else 217fa9e4066Sahrens rv = rw_trywrlock(&rwlp->rw_lock); 218fa9e4066Sahrens 219fa9e4066Sahrens if (rv == 0) { 220fa9e4066Sahrens rwlp->rw_owner = curthread; 221fa9e4066Sahrens return (1); 222fa9e4066Sahrens } 223fa9e4066Sahrens 224fa9e4066Sahrens return (0); 225fa9e4066Sahrens } 226fa9e4066Sahrens 227fa9e4066Sahrens /*ARGSUSED*/ 228fa9e4066Sahrens int 229fa9e4066Sahrens rw_tryupgrade(krwlock_t *rwlp) 230fa9e4066Sahrens { 231c25056deSgw ASSERT(rwlp->initialized == B_TRUE); 232fa9e4066Sahrens ASSERT(rwlp->rw_owner != (void *)-1UL); 233fa9e4066Sahrens 234fa9e4066Sahrens return (0); 235fa9e4066Sahrens } 236fa9e4066Sahrens 237fa9e4066Sahrens /* 238fa9e4066Sahrens * ========================================================================= 239fa9e4066Sahrens * condition variables 240fa9e4066Sahrens * ========================================================================= 241fa9e4066Sahrens */ 242fa9e4066Sahrens /*ARGSUSED*/ 243fa9e4066Sahrens void 244fa9e4066Sahrens cv_init(kcondvar_t *cv, char *name, int type, void *arg) 245fa9e4066Sahrens { 2465ad82045Snd VERIFY(cond_init(cv, type, NULL) == 0); 247fa9e4066Sahrens } 248fa9e4066Sahrens 249fa9e4066Sahrens void 250fa9e4066Sahrens cv_destroy(kcondvar_t *cv) 251fa9e4066Sahrens { 2525ad82045Snd VERIFY(cond_destroy(cv) == 0); 253fa9e4066Sahrens } 254fa9e4066Sahrens 255fa9e4066Sahrens void 256fa9e4066Sahrens cv_wait(kcondvar_t *cv, kmutex_t *mp) 257fa9e4066Sahrens { 258fa9e4066Sahrens ASSERT(mutex_owner(mp) == curthread); 259fa9e4066Sahrens mp->m_owner = NULL; 2605ad82045Snd int ret = cond_wait(cv, &mp->m_lock); 2615ad82045Snd VERIFY(ret == 0 || ret == EINTR); 262fa9e4066Sahrens mp->m_owner = curthread; 263fa9e4066Sahrens } 264fa9e4066Sahrens 265fa9e4066Sahrens clock_t 266fa9e4066Sahrens cv_timedwait(kcondvar_t *cv, kmutex_t *mp, clock_t abstime) 267fa9e4066Sahrens { 268fa9e4066Sahrens int error; 269fa9e4066Sahrens timestruc_t ts; 270fa9e4066Sahrens clock_t delta; 271fa9e4066Sahrens 272fa9e4066Sahrens top: 273fa9e4066Sahrens delta = abstime - lbolt; 274fa9e4066Sahrens if (delta <= 0) 275fa9e4066Sahrens return (-1); 276fa9e4066Sahrens 277fa9e4066Sahrens ts.tv_sec = delta / hz; 278fa9e4066Sahrens ts.tv_nsec = (delta % hz) * (NANOSEC / hz); 279fa9e4066Sahrens 280fa9e4066Sahrens ASSERT(mutex_owner(mp) == curthread); 281fa9e4066Sahrens mp->m_owner = NULL; 282fa9e4066Sahrens error = cond_reltimedwait(cv, &mp->m_lock, &ts); 283fa9e4066Sahrens mp->m_owner = curthread; 284fa9e4066Sahrens 285fa9e4066Sahrens if (error == ETIME) 286fa9e4066Sahrens return (-1); 287fa9e4066Sahrens 288fa9e4066Sahrens if (error == EINTR) 289fa9e4066Sahrens goto top; 290fa9e4066Sahrens 291fa9e4066Sahrens ASSERT(error == 0); 292fa9e4066Sahrens 293fa9e4066Sahrens return (1); 294fa9e4066Sahrens } 295fa9e4066Sahrens 296fa9e4066Sahrens void 297fa9e4066Sahrens cv_signal(kcondvar_t *cv) 298fa9e4066Sahrens { 2995ad82045Snd VERIFY(cond_signal(cv) == 0); 300fa9e4066Sahrens } 301fa9e4066Sahrens 302fa9e4066Sahrens void 303fa9e4066Sahrens cv_broadcast(kcondvar_t *cv) 304fa9e4066Sahrens { 3055ad82045Snd VERIFY(cond_broadcast(cv) == 0); 306fa9e4066Sahrens } 307fa9e4066Sahrens 308fa9e4066Sahrens /* 309fa9e4066Sahrens * ========================================================================= 310fa9e4066Sahrens * vnode operations 311fa9e4066Sahrens * ========================================================================= 312fa9e4066Sahrens */ 313fa9e4066Sahrens /* 314fa9e4066Sahrens * Note: for the xxxat() versions of these functions, we assume that the 315fa9e4066Sahrens * starting vp is always rootdir (which is true for spa_directory.c, the only 316fa9e4066Sahrens * ZFS consumer of these interfaces). We assert this is true, and then emulate 317fa9e4066Sahrens * them by adding '/' in front of the path. 318fa9e4066Sahrens */ 319fa9e4066Sahrens 320fa9e4066Sahrens /*ARGSUSED*/ 321fa9e4066Sahrens int 322fa9e4066Sahrens vn_open(char *path, int x1, int flags, int mode, vnode_t **vpp, int x2, int x3) 323fa9e4066Sahrens { 324fa9e4066Sahrens int fd; 325fa9e4066Sahrens vnode_t *vp; 326fa9e4066Sahrens int old_umask; 327fa9e4066Sahrens char realpath[MAXPATHLEN]; 328fa9e4066Sahrens struct stat64 st; 329fa9e4066Sahrens 330fa9e4066Sahrens /* 331fa9e4066Sahrens * If we're accessing a real disk from userland, we need to use 332fa9e4066Sahrens * the character interface to avoid caching. This is particularly 333fa9e4066Sahrens * important if we're trying to look at a real in-kernel storage 334fa9e4066Sahrens * pool from userland, e.g. via zdb, because otherwise we won't 335fa9e4066Sahrens * see the changes occurring under the segmap cache. 336fa9e4066Sahrens * On the other hand, the stupid character device returns zero 337fa9e4066Sahrens * for its size. So -- gag -- we open the block device to get 338fa9e4066Sahrens * its size, and remember it for subsequent VOP_GETATTR(). 339fa9e4066Sahrens */ 340fa9e4066Sahrens if (strncmp(path, "/dev/", 5) == 0) { 341fa9e4066Sahrens char *dsk; 342fa9e4066Sahrens fd = open64(path, O_RDONLY); 343fa9e4066Sahrens if (fd == -1) 344fa9e4066Sahrens return (errno); 345fa9e4066Sahrens if (fstat64(fd, &st) == -1) { 346fa9e4066Sahrens close(fd); 347fa9e4066Sahrens return (errno); 348fa9e4066Sahrens } 349fa9e4066Sahrens close(fd); 350fa9e4066Sahrens (void) sprintf(realpath, "%s", path); 351fa9e4066Sahrens dsk = strstr(path, "/dsk/"); 352fa9e4066Sahrens if (dsk != NULL) 353fa9e4066Sahrens (void) sprintf(realpath + (dsk - path) + 1, "r%s", 354fa9e4066Sahrens dsk + 1); 355fa9e4066Sahrens } else { 356fa9e4066Sahrens (void) sprintf(realpath, "%s", path); 357fa9e4066Sahrens if (!(flags & FCREAT) && stat64(realpath, &st) == -1) 358fa9e4066Sahrens return (errno); 359fa9e4066Sahrens } 360fa9e4066Sahrens 361fa9e4066Sahrens if (flags & FCREAT) 362fa9e4066Sahrens old_umask = umask(0); 363fa9e4066Sahrens 364fa9e4066Sahrens /* 365fa9e4066Sahrens * The construct 'flags - FREAD' conveniently maps combinations of 366fa9e4066Sahrens * FREAD and FWRITE to the corresponding O_RDONLY, O_WRONLY, and O_RDWR. 367fa9e4066Sahrens */ 368fa9e4066Sahrens fd = open64(realpath, flags - FREAD, mode); 369fa9e4066Sahrens 370fa9e4066Sahrens if (flags & FCREAT) 371fa9e4066Sahrens (void) umask(old_umask); 372fa9e4066Sahrens 373fa9e4066Sahrens if (fd == -1) 374fa9e4066Sahrens return (errno); 375fa9e4066Sahrens 376fa9e4066Sahrens if (fstat64(fd, &st) == -1) { 377fa9e4066Sahrens close(fd); 378fa9e4066Sahrens return (errno); 379fa9e4066Sahrens } 380fa9e4066Sahrens 381fa9e4066Sahrens (void) fcntl(fd, F_SETFD, FD_CLOEXEC); 382fa9e4066Sahrens 383fa9e4066Sahrens *vpp = vp = umem_zalloc(sizeof (vnode_t), UMEM_NOFAIL); 384fa9e4066Sahrens 385fa9e4066Sahrens vp->v_fd = fd; 386fa9e4066Sahrens vp->v_size = st.st_size; 387fa9e4066Sahrens vp->v_path = spa_strdup(path); 388fa9e4066Sahrens 389fa9e4066Sahrens return (0); 390fa9e4066Sahrens } 391fa9e4066Sahrens 392da6c28aaSamw /*ARGSUSED*/ 393fa9e4066Sahrens int 394fa9e4066Sahrens vn_openat(char *path, int x1, int flags, int mode, vnode_t **vpp, int x2, 395da6c28aaSamw int x3, vnode_t *startvp, int fd) 396fa9e4066Sahrens { 397fa9e4066Sahrens char *realpath = umem_alloc(strlen(path) + 2, UMEM_NOFAIL); 398fa9e4066Sahrens int ret; 399fa9e4066Sahrens 400fa9e4066Sahrens ASSERT(startvp == rootdir); 401fa9e4066Sahrens (void) sprintf(realpath, "/%s", path); 402fa9e4066Sahrens 403da6c28aaSamw /* fd ignored for now, need if want to simulate nbmand support */ 404fa9e4066Sahrens ret = vn_open(realpath, x1, flags, mode, vpp, x2, x3); 405fa9e4066Sahrens 406fa9e4066Sahrens umem_free(realpath, strlen(path) + 2); 407fa9e4066Sahrens 408fa9e4066Sahrens return (ret); 409fa9e4066Sahrens } 410fa9e4066Sahrens 411fa9e4066Sahrens /*ARGSUSED*/ 412fa9e4066Sahrens int 413fa9e4066Sahrens vn_rdwr(int uio, vnode_t *vp, void *addr, ssize_t len, offset_t offset, 414fa9e4066Sahrens int x1, int x2, rlim64_t x3, void *x4, ssize_t *residp) 415fa9e4066Sahrens { 416fa9e4066Sahrens ssize_t iolen, split; 417fa9e4066Sahrens 418fa9e4066Sahrens if (uio == UIO_READ) { 419fa9e4066Sahrens iolen = pread64(vp->v_fd, addr, len, offset); 420fa9e4066Sahrens } else { 421fa9e4066Sahrens /* 422fa9e4066Sahrens * To simulate partial disk writes, we split writes into two 423fa9e4066Sahrens * system calls so that the process can be killed in between. 424fa9e4066Sahrens */ 425fa9e4066Sahrens split = (len > 0 ? rand() % len : 0); 426fa9e4066Sahrens iolen = pwrite64(vp->v_fd, addr, split, offset); 427fa9e4066Sahrens iolen += pwrite64(vp->v_fd, (char *)addr + split, 428fa9e4066Sahrens len - split, offset + split); 429fa9e4066Sahrens } 430fa9e4066Sahrens 431fa9e4066Sahrens if (iolen == -1) 432fa9e4066Sahrens return (errno); 433fa9e4066Sahrens if (residp) 434fa9e4066Sahrens *residp = len - iolen; 435fa9e4066Sahrens else if (iolen != len) 436fa9e4066Sahrens return (EIO); 437fa9e4066Sahrens return (0); 438fa9e4066Sahrens } 439fa9e4066Sahrens 440fa9e4066Sahrens void 441fa9e4066Sahrens vn_close(vnode_t *vp) 442fa9e4066Sahrens { 443fa9e4066Sahrens close(vp->v_fd); 444fa9e4066Sahrens spa_strfree(vp->v_path); 445fa9e4066Sahrens umem_free(vp, sizeof (vnode_t)); 446fa9e4066Sahrens } 447fa9e4066Sahrens 448fa9e4066Sahrens #ifdef ZFS_DEBUG 449fa9e4066Sahrens 450fa9e4066Sahrens /* 451fa9e4066Sahrens * ========================================================================= 452fa9e4066Sahrens * Figure out which debugging statements to print 453fa9e4066Sahrens * ========================================================================= 454fa9e4066Sahrens */ 455fa9e4066Sahrens 456fa9e4066Sahrens static char *dprintf_string; 457fa9e4066Sahrens static int dprintf_print_all; 458fa9e4066Sahrens 459fa9e4066Sahrens int 460fa9e4066Sahrens dprintf_find_string(const char *string) 461fa9e4066Sahrens { 462fa9e4066Sahrens char *tmp_str = dprintf_string; 463fa9e4066Sahrens int len = strlen(string); 464fa9e4066Sahrens 465fa9e4066Sahrens /* 466fa9e4066Sahrens * Find out if this is a string we want to print. 467fa9e4066Sahrens * String format: file1.c,function_name1,file2.c,file3.c 468fa9e4066Sahrens */ 469fa9e4066Sahrens 470fa9e4066Sahrens while (tmp_str != NULL) { 471fa9e4066Sahrens if (strncmp(tmp_str, string, len) == 0 && 472fa9e4066Sahrens (tmp_str[len] == ',' || tmp_str[len] == '\0')) 473fa9e4066Sahrens return (1); 474fa9e4066Sahrens tmp_str = strchr(tmp_str, ','); 475fa9e4066Sahrens if (tmp_str != NULL) 476fa9e4066Sahrens tmp_str++; /* Get rid of , */ 477fa9e4066Sahrens } 478fa9e4066Sahrens return (0); 479fa9e4066Sahrens } 480fa9e4066Sahrens 481fa9e4066Sahrens void 482fa9e4066Sahrens dprintf_setup(int *argc, char **argv) 483fa9e4066Sahrens { 484fa9e4066Sahrens int i, j; 485fa9e4066Sahrens 486fa9e4066Sahrens /* 487fa9e4066Sahrens * Debugging can be specified two ways: by setting the 488fa9e4066Sahrens * environment variable ZFS_DEBUG, or by including a 489fa9e4066Sahrens * "debug=..." argument on the command line. The command 490fa9e4066Sahrens * line setting overrides the environment variable. 491fa9e4066Sahrens */ 492fa9e4066Sahrens 493fa9e4066Sahrens for (i = 1; i < *argc; i++) { 494fa9e4066Sahrens int len = strlen("debug="); 495fa9e4066Sahrens /* First look for a command line argument */ 496fa9e4066Sahrens if (strncmp("debug=", argv[i], len) == 0) { 497fa9e4066Sahrens dprintf_string = argv[i] + len; 498fa9e4066Sahrens /* Remove from args */ 499fa9e4066Sahrens for (j = i; j < *argc; j++) 500fa9e4066Sahrens argv[j] = argv[j+1]; 501fa9e4066Sahrens argv[j] = NULL; 502fa9e4066Sahrens (*argc)--; 503fa9e4066Sahrens } 504fa9e4066Sahrens } 505fa9e4066Sahrens 506fa9e4066Sahrens if (dprintf_string == NULL) { 507fa9e4066Sahrens /* Look for ZFS_DEBUG environment variable */ 508fa9e4066Sahrens dprintf_string = getenv("ZFS_DEBUG"); 509fa9e4066Sahrens } 510fa9e4066Sahrens 511fa9e4066Sahrens /* 512fa9e4066Sahrens * Are we just turning on all debugging? 513fa9e4066Sahrens */ 514fa9e4066Sahrens if (dprintf_find_string("on")) 515fa9e4066Sahrens dprintf_print_all = 1; 516fa9e4066Sahrens } 517fa9e4066Sahrens 518fa9e4066Sahrens /* 519fa9e4066Sahrens * ========================================================================= 520fa9e4066Sahrens * debug printfs 521fa9e4066Sahrens * ========================================================================= 522fa9e4066Sahrens */ 523fa9e4066Sahrens void 524fa9e4066Sahrens __dprintf(const char *file, const char *func, int line, const char *fmt, ...) 525fa9e4066Sahrens { 526fa9e4066Sahrens const char *newfile; 527fa9e4066Sahrens va_list adx; 528fa9e4066Sahrens 529fa9e4066Sahrens /* 530fa9e4066Sahrens * Get rid of annoying "../common/" prefix to filename. 531fa9e4066Sahrens */ 532fa9e4066Sahrens newfile = strrchr(file, '/'); 533fa9e4066Sahrens if (newfile != NULL) { 534fa9e4066Sahrens newfile = newfile + 1; /* Get rid of leading / */ 535fa9e4066Sahrens } else { 536fa9e4066Sahrens newfile = file; 537fa9e4066Sahrens } 538fa9e4066Sahrens 539fa9e4066Sahrens if (dprintf_print_all || 540fa9e4066Sahrens dprintf_find_string(newfile) || 541fa9e4066Sahrens dprintf_find_string(func)) { 542fa9e4066Sahrens /* Print out just the function name if requested */ 543fa9e4066Sahrens flockfile(stdout); 544fa9e4066Sahrens if (dprintf_find_string("pid")) 545fa9e4066Sahrens (void) printf("%d ", getpid()); 546fa9e4066Sahrens if (dprintf_find_string("tid")) 547fa9e4066Sahrens (void) printf("%u ", thr_self()); 548fa9e4066Sahrens if (dprintf_find_string("cpu")) 549fa9e4066Sahrens (void) printf("%u ", getcpuid()); 550fa9e4066Sahrens if (dprintf_find_string("time")) 551fa9e4066Sahrens (void) printf("%llu ", gethrtime()); 552fa9e4066Sahrens if (dprintf_find_string("long")) 553fa9e4066Sahrens (void) printf("%s, line %d: ", newfile, line); 554fa9e4066Sahrens (void) printf("%s: ", func); 555fa9e4066Sahrens va_start(adx, fmt); 556fa9e4066Sahrens (void) vprintf(fmt, adx); 557fa9e4066Sahrens va_end(adx); 558fa9e4066Sahrens funlockfile(stdout); 559fa9e4066Sahrens } 560fa9e4066Sahrens } 561fa9e4066Sahrens 562fa9e4066Sahrens #endif /* ZFS_DEBUG */ 563fa9e4066Sahrens 564fa9e4066Sahrens /* 565fa9e4066Sahrens * ========================================================================= 566fa9e4066Sahrens * cmn_err() and panic() 567fa9e4066Sahrens * ========================================================================= 568fa9e4066Sahrens */ 569fa9e4066Sahrens static char ce_prefix[CE_IGNORE][10] = { "", "NOTICE: ", "WARNING: ", "" }; 570fa9e4066Sahrens static char ce_suffix[CE_IGNORE][2] = { "", "\n", "\n", "" }; 571fa9e4066Sahrens 572fa9e4066Sahrens void 573fa9e4066Sahrens vpanic(const char *fmt, va_list adx) 574fa9e4066Sahrens { 575fa9e4066Sahrens (void) fprintf(stderr, "error: "); 576fa9e4066Sahrens (void) vfprintf(stderr, fmt, adx); 577fa9e4066Sahrens (void) fprintf(stderr, "\n"); 578fa9e4066Sahrens 579fa9e4066Sahrens abort(); /* think of it as a "user-level crash dump" */ 580fa9e4066Sahrens } 581fa9e4066Sahrens 582fa9e4066Sahrens void 583fa9e4066Sahrens panic(const char *fmt, ...) 584fa9e4066Sahrens { 585fa9e4066Sahrens va_list adx; 586fa9e4066Sahrens 587fa9e4066Sahrens va_start(adx, fmt); 588fa9e4066Sahrens vpanic(fmt, adx); 589fa9e4066Sahrens va_end(adx); 590fa9e4066Sahrens } 591fa9e4066Sahrens 592fa9e4066Sahrens void 5930125049cSahrens vcmn_err(int ce, const char *fmt, va_list adx) 594fa9e4066Sahrens { 595fa9e4066Sahrens if (ce == CE_PANIC) 596fa9e4066Sahrens vpanic(fmt, adx); 597fa9e4066Sahrens if (ce != CE_NOTE) { /* suppress noise in userland stress testing */ 598fa9e4066Sahrens (void) fprintf(stderr, "%s", ce_prefix[ce]); 599fa9e4066Sahrens (void) vfprintf(stderr, fmt, adx); 600fa9e4066Sahrens (void) fprintf(stderr, "%s", ce_suffix[ce]); 601fa9e4066Sahrens } 6020125049cSahrens } 6030125049cSahrens 6040125049cSahrens /*PRINTFLIKE2*/ 6050125049cSahrens void 6060125049cSahrens cmn_err(int ce, const char *fmt, ...) 6070125049cSahrens { 6080125049cSahrens va_list adx; 6090125049cSahrens 6100125049cSahrens va_start(adx, fmt); 6110125049cSahrens vcmn_err(ce, fmt, adx); 612fa9e4066Sahrens va_end(adx); 613fa9e4066Sahrens } 614fa9e4066Sahrens 615ea8dc4b6Seschrock /* 616ea8dc4b6Seschrock * ========================================================================= 617ea8dc4b6Seschrock * kobj interfaces 618ea8dc4b6Seschrock * ========================================================================= 619ea8dc4b6Seschrock */ 620ea8dc4b6Seschrock struct _buf * 621ea8dc4b6Seschrock kobj_open_file(char *name) 622ea8dc4b6Seschrock { 623ea8dc4b6Seschrock struct _buf *file; 624ea8dc4b6Seschrock vnode_t *vp; 625ea8dc4b6Seschrock 626ea8dc4b6Seschrock /* set vp as the _fd field of the file */ 627da6c28aaSamw if (vn_openat(name, UIO_SYSSPACE, FREAD, 0, &vp, 0, 0, rootdir, 628da6c28aaSamw -1) != 0) 629ea8dc4b6Seschrock return ((void *)-1UL); 630ea8dc4b6Seschrock 631ea8dc4b6Seschrock file = umem_zalloc(sizeof (struct _buf), UMEM_NOFAIL); 632ea8dc4b6Seschrock file->_fd = (intptr_t)vp; 633ea8dc4b6Seschrock return (file); 634ea8dc4b6Seschrock } 635ea8dc4b6Seschrock 636ea8dc4b6Seschrock int 637ea8dc4b6Seschrock kobj_read_file(struct _buf *file, char *buf, unsigned size, unsigned off) 638ea8dc4b6Seschrock { 639ea8dc4b6Seschrock ssize_t resid; 640ea8dc4b6Seschrock 641ea8dc4b6Seschrock vn_rdwr(UIO_READ, (vnode_t *)file->_fd, buf, size, (offset_t)off, 642ea8dc4b6Seschrock UIO_SYSSPACE, 0, 0, 0, &resid); 643ea8dc4b6Seschrock 644b1b8ab34Slling return (size - resid); 645ea8dc4b6Seschrock } 646ea8dc4b6Seschrock 647ea8dc4b6Seschrock void 648ea8dc4b6Seschrock kobj_close_file(struct _buf *file) 649ea8dc4b6Seschrock { 650ea8dc4b6Seschrock vn_close((vnode_t *)file->_fd); 651ea8dc4b6Seschrock umem_free(file, sizeof (struct _buf)); 652ea8dc4b6Seschrock } 653ea8dc4b6Seschrock 654ea8dc4b6Seschrock int 655b1b8ab34Slling kobj_get_filesize(struct _buf *file, uint64_t *size) 656ea8dc4b6Seschrock { 657ea8dc4b6Seschrock struct stat64 st; 658b1b8ab34Slling vnode_t *vp = (vnode_t *)file->_fd; 659b1b8ab34Slling 660ea8dc4b6Seschrock if (fstat64(vp->v_fd, &st) == -1) { 661ea8dc4b6Seschrock vn_close(vp); 662ea8dc4b6Seschrock return (errno); 663ea8dc4b6Seschrock } 664b1b8ab34Slling *size = st.st_size; 665ea8dc4b6Seschrock return (0); 666ea8dc4b6Seschrock } 667ea8dc4b6Seschrock 668fa9e4066Sahrens /* 669fa9e4066Sahrens * ========================================================================= 670fa9e4066Sahrens * misc routines 671fa9e4066Sahrens * ========================================================================= 672fa9e4066Sahrens */ 673fa9e4066Sahrens 674fa9e4066Sahrens void 675fa9e4066Sahrens delay(clock_t ticks) 676fa9e4066Sahrens { 677fa9e4066Sahrens poll(0, 0, ticks * (1000 / hz)); 678fa9e4066Sahrens } 679fa9e4066Sahrens 680fa9e4066Sahrens /* 681fa9e4066Sahrens * Find highest one bit set. 682fa9e4066Sahrens * Returns bit number + 1 of highest bit that is set, otherwise returns 0. 683fa9e4066Sahrens * High order bit is 31 (or 63 in _LP64 kernel). 684fa9e4066Sahrens */ 685fa9e4066Sahrens int 686fa9e4066Sahrens highbit(ulong_t i) 687fa9e4066Sahrens { 688fa9e4066Sahrens register int h = 1; 689fa9e4066Sahrens 690fa9e4066Sahrens if (i == 0) 691fa9e4066Sahrens return (0); 692fa9e4066Sahrens #ifdef _LP64 693fa9e4066Sahrens if (i & 0xffffffff00000000ul) { 694fa9e4066Sahrens h += 32; i >>= 32; 695fa9e4066Sahrens } 696fa9e4066Sahrens #endif 697fa9e4066Sahrens if (i & 0xffff0000) { 698fa9e4066Sahrens h += 16; i >>= 16; 699fa9e4066Sahrens } 700fa9e4066Sahrens if (i & 0xff00) { 701fa9e4066Sahrens h += 8; i >>= 8; 702fa9e4066Sahrens } 703fa9e4066Sahrens if (i & 0xf0) { 704fa9e4066Sahrens h += 4; i >>= 4; 705fa9e4066Sahrens } 706fa9e4066Sahrens if (i & 0xc) { 707fa9e4066Sahrens h += 2; i >>= 2; 708fa9e4066Sahrens } 709fa9e4066Sahrens if (i & 0x2) { 710fa9e4066Sahrens h += 1; 711fa9e4066Sahrens } 712fa9e4066Sahrens return (h); 713fa9e4066Sahrens } 714fa9e4066Sahrens 715*17f17c2dSbonwick static int random_fd = -1, urandom_fd = -1; 716*17f17c2dSbonwick 717fa9e4066Sahrens static int 718*17f17c2dSbonwick random_get_bytes_common(uint8_t *ptr, size_t len, int fd) 719fa9e4066Sahrens { 720fa9e4066Sahrens size_t resid = len; 721fa9e4066Sahrens ssize_t bytes; 722fa9e4066Sahrens 723fa9e4066Sahrens ASSERT(fd != -1); 724fa9e4066Sahrens 725fa9e4066Sahrens while (resid != 0) { 726fa9e4066Sahrens bytes = read(fd, ptr, resid); 727*17f17c2dSbonwick ASSERT3S(bytes, >=, 0); 728fa9e4066Sahrens ptr += bytes; 729fa9e4066Sahrens resid -= bytes; 730fa9e4066Sahrens } 731fa9e4066Sahrens 732fa9e4066Sahrens return (0); 733fa9e4066Sahrens } 734fa9e4066Sahrens 735fa9e4066Sahrens int 736fa9e4066Sahrens random_get_bytes(uint8_t *ptr, size_t len) 737fa9e4066Sahrens { 738*17f17c2dSbonwick return (random_get_bytes_common(ptr, len, random_fd)); 739fa9e4066Sahrens } 740fa9e4066Sahrens 741fa9e4066Sahrens int 742fa9e4066Sahrens random_get_pseudo_bytes(uint8_t *ptr, size_t len) 743fa9e4066Sahrens { 744*17f17c2dSbonwick return (random_get_bytes_common(ptr, len, urandom_fd)); 745fa9e4066Sahrens } 746fa9e4066Sahrens 74795173954Sek int 74895173954Sek ddi_strtoul(const char *hw_serial, char **nptr, int base, unsigned long *result) 74995173954Sek { 75095173954Sek char *end; 75195173954Sek 75295173954Sek *result = strtoul(hw_serial, &end, base); 75395173954Sek if (*result == 0) 75495173954Sek return (errno); 75595173954Sek return (0); 75695173954Sek } 75795173954Sek 758fa9e4066Sahrens /* 759fa9e4066Sahrens * ========================================================================= 760fa9e4066Sahrens * kernel emulation setup & teardown 761fa9e4066Sahrens * ========================================================================= 762fa9e4066Sahrens */ 763fa9e4066Sahrens static int 764fa9e4066Sahrens umem_out_of_memory(void) 765fa9e4066Sahrens { 766fa9e4066Sahrens char errmsg[] = "out of memory -- generating core dump\n"; 767fa9e4066Sahrens 768fa9e4066Sahrens write(fileno(stderr), errmsg, sizeof (errmsg)); 769fa9e4066Sahrens abort(); 770fa9e4066Sahrens return (0); 771fa9e4066Sahrens } 772fa9e4066Sahrens 773fa9e4066Sahrens void 774fa9e4066Sahrens kernel_init(int mode) 775fa9e4066Sahrens { 776fa9e4066Sahrens umem_nofail_callback(umem_out_of_memory); 777fa9e4066Sahrens 778fa9e4066Sahrens physmem = sysconf(_SC_PHYS_PAGES); 779fa9e4066Sahrens 780fa9e4066Sahrens dprintf("physmem = %llu pages (%.2f GB)\n", physmem, 781fa9e4066Sahrens (double)physmem * sysconf(_SC_PAGE_SIZE) / (1ULL << 30)); 782fa9e4066Sahrens 78395173954Sek snprintf(hw_serial, sizeof (hw_serial), "%ld", gethostid()); 78495173954Sek 785*17f17c2dSbonwick VERIFY((random_fd = open("/dev/random", O_RDONLY)) != -1); 786*17f17c2dSbonwick VERIFY((urandom_fd = open("/dev/urandom", O_RDONLY)) != -1); 787*17f17c2dSbonwick 788fa9e4066Sahrens spa_init(mode); 789fa9e4066Sahrens } 790fa9e4066Sahrens 791fa9e4066Sahrens void 792fa9e4066Sahrens kernel_fini(void) 793fa9e4066Sahrens { 794fa9e4066Sahrens spa_fini(); 795*17f17c2dSbonwick 796*17f17c2dSbonwick close(random_fd); 797*17f17c2dSbonwick close(urandom_fd); 798*17f17c2dSbonwick 799*17f17c2dSbonwick random_fd = -1; 800*17f17c2dSbonwick urandom_fd = -1; 801fa9e4066Sahrens } 802c9431fa1Sahl 803c9431fa1Sahl int 804c9431fa1Sahl z_uncompress(void *dst, size_t *dstlen, const void *src, size_t srclen) 805c9431fa1Sahl { 806c9431fa1Sahl int ret; 807c9431fa1Sahl uLongf len = *dstlen; 808c9431fa1Sahl 809c9431fa1Sahl if ((ret = uncompress(dst, &len, src, srclen)) == Z_OK) 810c9431fa1Sahl *dstlen = (size_t)len; 811c9431fa1Sahl 812c9431fa1Sahl return (ret); 813c9431fa1Sahl } 814c9431fa1Sahl 815c9431fa1Sahl int 816c9431fa1Sahl z_compress_level(void *dst, size_t *dstlen, const void *src, size_t srclen, 817c9431fa1Sahl int level) 818c9431fa1Sahl { 819c9431fa1Sahl int ret; 820c9431fa1Sahl uLongf len = *dstlen; 821c9431fa1Sahl 822c9431fa1Sahl if ((ret = compress2(dst, &len, src, srclen, level)) == Z_OK) 823c9431fa1Sahl *dstlen = (size_t)len; 824c9431fa1Sahl 825c9431fa1Sahl return (ret); 826c9431fa1Sahl } 827ecd6cf80Smarks 828da6c28aaSamw /*ARGSUSED*/ 829da6c28aaSamw size_t u8_textprep_str(char *i, size_t *il, char *o, size_t *ol, int nf, 830da6c28aaSamw size_t vers, int *err) 831da6c28aaSamw { 832da6c28aaSamw *err = EINVAL; 833da6c28aaSamw return ((size_t)-1); 834da6c28aaSamw } 835da6c28aaSamw 836ecd6cf80Smarks uid_t 837ecd6cf80Smarks crgetuid(cred_t *cr) 838ecd6cf80Smarks { 839ecd6cf80Smarks return (0); 840ecd6cf80Smarks } 841ecd6cf80Smarks 842ecd6cf80Smarks gid_t 843ecd6cf80Smarks crgetgid(cred_t *cr) 844ecd6cf80Smarks { 845ecd6cf80Smarks return (0); 846ecd6cf80Smarks } 847ecd6cf80Smarks 848ecd6cf80Smarks int 849ecd6cf80Smarks crgetngroups(cred_t *cr) 850ecd6cf80Smarks { 851ecd6cf80Smarks return (0); 852ecd6cf80Smarks } 853ecd6cf80Smarks 854ecd6cf80Smarks gid_t * 855ecd6cf80Smarks crgetgroups(cred_t *cr) 856ecd6cf80Smarks { 857ecd6cf80Smarks return (NULL); 858ecd6cf80Smarks } 859ecd6cf80Smarks 860ecd6cf80Smarks int 861ecd6cf80Smarks zfs_secpolicy_snapshot_perms(const char *name, cred_t *cr) 862ecd6cf80Smarks { 863ecd6cf80Smarks return (0); 864ecd6cf80Smarks } 865ecd6cf80Smarks 866ecd6cf80Smarks int 867ecd6cf80Smarks zfs_secpolicy_rename_perms(const char *from, const char *to, cred_t *cr) 868ecd6cf80Smarks { 869ecd6cf80Smarks return (0); 870ecd6cf80Smarks } 871ecd6cf80Smarks 872ecd6cf80Smarks int 873ecd6cf80Smarks zfs_secpolicy_destroy_perms(const char *name, cred_t *cr) 874ecd6cf80Smarks { 875ecd6cf80Smarks return (0); 876ecd6cf80Smarks } 877