include/sys/zfs_context.h

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License (the "License").
   6  * You may not use this file except in compliance with the License.
   7  *
   8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9  * or http://www.opensolaris.org/os/licensing.
  10  * See the License for the specific language governing permissions
  11  * and limitations under the License.
  12  *
  13  * When distributing Covered Code, include this CDDL HEADER in each
  14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15  * If applicable, add the following below this CDDL HEADER, with the
  16  * fields enclosed by brackets "[]" replaced with your own identifying
  17  * information: Portions Copyright [yyyy] [name of copyright owner]
  18  *
  19  * CDDL HEADER END
  20  */
  21 /*
  22  * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
  23  * Use is subject to license terms.
  24  */
  25 /*
  26  * Copyright 2011 Nexenta Systems, Inc. All rights reserved.
  27  */
  28
  29 #ifndef _SYS_ZFS_CONTEXT_H
  30 #define _SYS_ZFS_CONTEXT_H
  31
  32 #ifdef __KERNEL__
  33
  34 #include <sys/note.h>
  35 #include <sys/types.h>
  36 #include <sys/t_lock.h>
  37 #include <sys/atomic.h>
  38 #include <sys/sysmacros.h>
  39 #include <sys/bitmap.h>
  40 #include <sys/cmn_err.h>
  41 #include <sys/kmem.h>
  42 #include <sys/taskq.h>
  43 #include <sys/buf.h>
  44 #include <sys/param.h>
  45 #include <sys/systm.h>
  46 #include <sys/cpuvar.h>
  47 #include <sys/kobj.h>
  48 #include <sys/conf.h>
  49 #include <sys/disp.h>
  50 #include <sys/debug.h>
  51 #include <sys/random.h>
  52 #include <sys/byteorder.h>
  53 #include <sys/systm.h>
  54 #include <sys/list.h>
  55 #include <sys/uio_impl.h>
  56 #include <sys/dirent.h>
  57 #include <sys/time.h>
  58 #include <vm/seg_kmem.h>
  59 #include <sys/zone.h>
  60 #include <sys/zfs_debug.h>
  61 #include <sys/fm/fs/zfs.h>
  62 #include <sys/sunddi.h>
  63 #include <sys/ctype.h>
  64 #include <linux/dcache_compat.h>
  65
  66 #else /* _KERNEL */
  67
  68 #define _SYS_MUTEX_H
  69 #define _SYS_RWLOCK_H
  70 #define _SYS_CONDVAR_H
  71 #define _SYS_SYSTM_H
  72 #define _SYS_DEBUG_H
  73 #define _SYS_T_LOCK_H
  74 #define _SYS_VNODE_H
  75 #define _SYS_VFS_H
  76 #define _SYS_SUNDDI_H
  77 #define _SYS_CALLB_H
  78
  79 #include <stdio.h>
  80 #include <stdlib.h>
  81 #include <stddef.h>
  82 #include <stdarg.h>
  83 #include <fcntl.h>
  84 #include <unistd.h>
  85 #include <errno.h>
  86 #include <string.h>
  87 #include <strings.h>
  88 #include <pthread.h>
  89 #include <assert.h>
  90 #include <alloca.h>
  91 #include <umem.h>
  92 #include <limits.h>
  93 #include <atomic.h>
  94 #include <dirent.h>
  95 #include <time.h>
  96 #include <ctype.h>
  97 #include <sys/note.h>
  98 #include <sys/types.h>
  99 #include <sys/cred.h>
 100 #include <sys/sysmacros.h>
 101 #include <sys/bitmap.h>
 102 #include <sys/resource.h>
 103 #include <sys/byteorder.h>
 104 #include <sys/list.h>
 105 #include <sys/uio.h>
 106 #include <sys/zfs_debug.h>
 107 #include <sys/sdt.h>
 108 #include <sys/kstat.h>
 109 #include <sys/u8_textprep.h>
 110 #include <sys/fm/fs/zfs.h>
 111 #include <sys/sunddi.h>
 112
 113 /*
 114  * Stack
 115  */
 116
 117 #define  noinline       __attribute__((noinline))
 118
 119 /*
 120  * Debugging
 121  */
 122
 123 /*
 124  * Note that we are not using the debugging levels.
 125  */
 126
 127 #define CE_CONT         0       /* continuation         */
 128 #define CE_NOTE         1       /* notice               */
 129 #define CE_WARN         2       /* warning              */
 130 #define CE_PANIC        3       /* panic                */
 131 #define CE_IGNORE       4       /* print nothing        */
 132
 133 extern int aok;
 134
 135 /*
 136  * ZFS debugging
 137  */
 138
 139 extern void dprintf_setup(int *argc, char **argv);
 140 extern void __dprintf(const char *file, const char *func,
 141     int line, const char *fmt, ...);
 142 extern void cmn_err(int, const char *, ...);
 143 extern void vcmn_err(int, const char *, __va_list);
 144 extern void panic(const char *, ...);
 145 extern void vpanic(const char *, __va_list);
 146
 147 #define fm_panic        panic
 148
 149 /*
 150  * DTrace SDT probes have different signatures in userland than they do in
 151  * kernel.  If they're being used in kernel code, re-define them out of
 152  * existence for their counterparts in libzpool.
 153  */
 154
 155 #ifdef DTRACE_PROBE
 156 #undef  DTRACE_PROBE
 157 #define DTRACE_PROBE(a) ((void)0)
 158 #endif  /* DTRACE_PROBE */
 159
 160 #ifdef DTRACE_PROBE1
 161 #undef  DTRACE_PROBE1
 162 #define DTRACE_PROBE1(a, b, c)  ((void)0)
 163 #endif  /* DTRACE_PROBE1 */
 164
 165 #ifdef DTRACE_PROBE2
 166 #undef  DTRACE_PROBE2
 167 #define DTRACE_PROBE2(a, b, c, d, e)    ((void)0)
 168 #endif  /* DTRACE_PROBE2 */
 169
 170 #ifdef DTRACE_PROBE3
 171 #undef  DTRACE_PROBE3
 172 #define DTRACE_PROBE3(a, b, c, d, e, f, g)      ((void)0)
 173 #endif  /* DTRACE_PROBE3 */
 174
 175 #ifdef DTRACE_PROBE4
 176 #undef  DTRACE_PROBE4
 177 #define DTRACE_PROBE4(a, b, c, d, e, f, g, h, i)        ((void)0)
 178 #endif  /* DTRACE_PROBE4 */
 179
 180 /*
 181  * Threads
 182  */
 183 #define TS_MAGIC                0x72f158ab4261e538ull
 184 #define TS_RUN                  0x00000002
 185 #ifdef __linux__
 186 #define STACK_SIZE              8192    /* Linux x86 and amd64 */
 187 #else
 188 #define STACK_SIZE              24576   /* Solaris */
 189 #endif
 190
 191 #ifdef NPTL_GUARD_WITHIN_STACK
 192 #define EXTRA_GUARD_BYTES       PAGESIZE
 193 #else
 194 #define EXTRA_GUARD_BYTES       0
 195 #endif
 196
 197 /* in libzpool, p0 exists only to have its address taken */
 198 typedef struct proc {
 199         uintptr_t       this_is_never_used_dont_dereference_it;
 200 } proc_t;
 201
 202 extern struct proc p0;
 203
 204 typedef void (*thread_func_t)(void *);
 205 typedef void (*thread_func_arg_t)(void *);
 206 typedef pthread_t kt_did_t;
 207
 208 typedef struct kthread {
 209         kt_did_t        t_tid;
 210         thread_func_t   t_func;
 211         void *          t_arg;
 212 } kthread_t;
 213
 214 #define tsd_get(key)                    pthread_getspecific(key)
 215 #define tsd_set(key, val)               pthread_setspecific(key, val)
 216 #define curthread                       zk_thread_current()
 217 #define thread_exit                     zk_thread_exit
 218 #define thread_create(stk, stksize, func, arg, len, pp, state, pri)     \
 219         zk_thread_create(stk, stksize, (thread_func_t)func, arg,        \
 220                          len, NULL, state, pri)
 221 #define thread_join(t)                  zk_thread_join(t)
 222 #define newproc(f,a,cid,pri,ctp,pid)    (ENOSYS)
 223
 224 extern kthread_t *zk_thread_current(void);
 225 extern void zk_thread_exit(void);
 226 extern kthread_t *zk_thread_create(caddr_t stk, size_t  stksize,
 227         thread_func_t func, void *arg, size_t len,
 228         proc_t *pp, int state, pri_t pri);
 229 extern void zk_thread_join(kt_did_t tid);
 230
 231 #define PS_NONE         -1
 232
 233 #define issig(why)      (FALSE)
 234 #define ISSIG(thr, why) (FALSE)
 235
 236 /*
 237  * Mutexes
 238  */
 239 #define MTX_MAGIC       0x9522f51362a6e326ull
 240 #define MTX_INIT        ((void *)NULL)
 241 #define MTX_DEST        ((void *)-1UL)
 242
 243 typedef struct kmutex {
 244         void            *m_owner;
 245         uint64_t        m_magic;
 246         pthread_mutex_t m_lock;
 247 } kmutex_t;
 248
 249 #define MUTEX_DEFAULT   0
 250 #define MUTEX_HELD(m)   ((m)->m_owner == curthread)
 251 #define MUTEX_NOT_HELD(m) (!MUTEX_HELD(m))
 252
 253 extern void mutex_init(kmutex_t *mp, char *name, int type, void *cookie);
 254 extern void mutex_destroy(kmutex_t *mp);
 255 extern void mutex_enter(kmutex_t *mp);
 256 extern void mutex_exit(kmutex_t *mp);
 257 extern int mutex_tryenter(kmutex_t *mp);
 258 extern void *mutex_owner(kmutex_t *mp);
 259 extern int mutex_held(kmutex_t *mp);
 260
 261 /*
 262  * RW locks
 263  */
 264 #define RW_MAGIC        0x4d31fb123648e78aull
 265 #define RW_INIT         ((void *)NULL)
 266 #define RW_DEST         ((void *)-1UL)
 267
 268 typedef struct krwlock {
 269         void                    *rw_owner;
 270         void                    *rw_wr_owner;
 271         uint64_t                rw_magic;
 272         pthread_rwlock_t        rw_lock;
 273         uint_t                  rw_readers;
 274 } krwlock_t;
 275
 276 typedef int krw_t;
 277
 278 #define RW_READER       0
 279 #define RW_WRITER       1
 280 #define RW_DEFAULT      RW_READER
 281
 282 #define RW_READ_HELD(x)         ((x)->rw_readers > 0)
 283 #define RW_WRITE_HELD(x)        ((x)->rw_wr_owner == curthread)
 284 #define RW_LOCK_HELD(x)         (RW_READ_HELD(x) || RW_WRITE_HELD(x))
 285
 286 extern void rw_init(krwlock_t *rwlp, char *name, int type, void *arg);
 287 extern void rw_destroy(krwlock_t *rwlp);
 288 extern void rw_enter(krwlock_t *rwlp, krw_t rw);
 289 extern int rw_tryenter(krwlock_t *rwlp, krw_t rw);
 290 extern int rw_tryupgrade(krwlock_t *rwlp);
 291 extern void rw_exit(krwlock_t *rwlp);
 292 #define rw_downgrade(rwlp) do { } while (0)
 293
 294 extern uid_t crgetuid(cred_t *cr);
 295 extern gid_t crgetgid(cred_t *cr);
 296 extern int crgetngroups(cred_t *cr);
 297 extern gid_t *crgetgroups(cred_t *cr);
 298
 299 /*
 300  * Condition variables
 301  */
 302 #define CV_MAGIC        0xd31ea9a83b1b30c4ull
 303
 304 typedef struct kcondvar {
 305         uint64_t                cv_magic;
 306         pthread_cond_t          cv;
 307 } kcondvar_t;
 308
 309 #define CV_DEFAULT      0
 310
 311 extern void cv_init(kcondvar_t *cv, char *name, int type, void *arg);
 312 extern void cv_destroy(kcondvar_t *cv);
 313 extern void cv_wait(kcondvar_t *cv, kmutex_t *mp);
 314 extern clock_t cv_timedwait(kcondvar_t *cv, kmutex_t *mp, clock_t abstime);
 315 extern void cv_signal(kcondvar_t *cv);
 316 extern void cv_broadcast(kcondvar_t *cv);
 317 #define cv_timedwait_interruptible(cv, mp, at)  cv_timedwait(cv, mp, at)
 318 #define cv_wait_interruptible(cv, mp)           cv_wait(cv, mp)
 319
 320 /*
 321  * kstat creation, installation and deletion
 322  */
 323 extern kstat_t *kstat_create(char *, int,
 324     char *, char *, uchar_t, ulong_t, uchar_t);
 325 extern void kstat_install(kstat_t *);
 326 extern void kstat_delete(kstat_t *);
 327
 328 /*
 329  * Kernel memory
 330  */
 331 #define KM_SLEEP                UMEM_NOFAIL
 332 #define KM_PUSHPAGE             KM_SLEEP
 333 #define KM_NOSLEEP              UMEM_DEFAULT
 334 #define KM_NODEBUG              0x0
 335 #define KMC_NODEBUG             UMC_NODEBUG
 336 #define KMC_KMEM                0x0
 337 #define KMC_VMEM                0x0
 338 #define kmem_alloc(_s, _f)      umem_alloc(_s, _f)
 339 #define kmem_zalloc(_s, _f)     umem_zalloc(_s, _f)
 340 #define kmem_free(_b, _s)       umem_free(_b, _s)
 341 #define vmem_alloc(_s, _f)      kmem_alloc(_s, _f)
 342 #define vmem_zalloc(_s, _f)     kmem_zalloc(_s, _f)
 343 #define vmem_free(_b, _s)       kmem_free(_b, _s)
 344 #define kmem_cache_create(_a, _b, _c, _d, _e, _f, _g, _h, _i) \
 345         umem_cache_create(_a, _b, _c, _d, _e, _f, _g, _h, _i)
 346 #define kmem_cache_destroy(_c)  umem_cache_destroy(_c)
 347 #define kmem_cache_alloc(_c, _f) umem_cache_alloc(_c, _f)
 348 #define kmem_cache_free(_c, _b) umem_cache_free(_c, _b)
 349 #define kmem_debugging()        0
 350 #define kmem_cache_reap_now(_c)         /* nothing */
 351 #define kmem_cache_set_move(_c, _cb)    /* nothing */
 352 #define POINTER_INVALIDATE(_pp)         /* nothing */
 353 #define POINTER_IS_VALID(_p)    0
 354
 355 typedef umem_cache_t kmem_cache_t;
 356
 357 typedef enum kmem_cbrc {
 358         KMEM_CBRC_YES,
 359         KMEM_CBRC_NO,
 360         KMEM_CBRC_LATER,
 361         KMEM_CBRC_DONT_NEED,
 362         KMEM_CBRC_DONT_KNOW
 363 } kmem_cbrc_t;
 364
 365 /*
 366  * Task queues
 367  */
 368 typedef struct taskq taskq_t;
 369 typedef uintptr_t taskqid_t;
 370 typedef void (task_func_t)(void *);
 371
 372 typedef struct taskq_ent {
 373         struct taskq_ent        *tqent_next;
 374         struct taskq_ent        *tqent_prev;
 375         task_func_t             *tqent_func;
 376         void                    *tqent_arg;
 377         uintptr_t               tqent_flags;
 378 } taskq_ent_t;
 379
 380 #define TQENT_FLAG_PREALLOC     0x1     /* taskq_dispatch_ent used */
 381
 382 #define TASKQ_PREPOPULATE       0x0001
 383 #define TASKQ_CPR_SAFE          0x0002  /* Use CPR safe protocol */
 384 #define TASKQ_DYNAMIC           0x0004  /* Use dynamic thread scheduling */
 385 #define TASKQ_THREADS_CPU_PCT   0x0008  /* Scale # threads by # cpus */
 386 #define TASKQ_DC_BATCH          0x0010  /* Mark threads as batch */
 387 #define TASKQ_NORECLAIM         0x0020  /* Disable direct memory reclaim */
 388
 389 #define TQ_SLEEP        KM_SLEEP        /* Can block for memory */
 390 #define TQ_NOSLEEP      KM_NOSLEEP      /* cannot block for memory; may fail */
 391 #define TQ_NOQUEUE      0x02            /* Do not enqueue if can't dispatch */
 392 #define TQ_FRONT        0x08            /* Queue in front */
 393
 394 extern taskq_t *system_taskq;
 395
 396 extern taskq_t  *taskq_create(const char *, int, pri_t, int, int, uint_t);
 397 #define taskq_create_proc(a, b, c, d, e, p, f) \
 398             (taskq_create(a, b, c, d, e, f))
 399 #define taskq_create_sysdc(a, b, d, e, p, dc, f) \
 400             (taskq_create(a, b, maxclsyspri, d, e, f))
 401 extern taskqid_t taskq_dispatch(taskq_t *, task_func_t, void *, uint_t);
 402 extern void     taskq_dispatch_ent(taskq_t *, task_func_t, void *, uint_t,
 403     taskq_ent_t *);
 404 extern int      taskq_empty_ent(taskq_ent_t *);
 405 extern void     taskq_init_ent(taskq_ent_t *);
 406 extern void     taskq_destroy(taskq_t *);
 407 extern void     taskq_wait(taskq_t *);
 408 extern int      taskq_member(taskq_t *, kthread_t *);
 409 extern void     system_taskq_init(void);
 410 extern void     system_taskq_fini(void);
 411
 412 #define XVA_MAPSIZE     3
 413 #define XVA_MAGIC       0x78766174
 414
 415 /*
 416  * vnodes
 417  */
 418 typedef struct vnode {
 419         uint64_t        v_size;
 420         int             v_fd;
 421         char            *v_path;
 422 } vnode_t;
 423
 424 #define AV_SCANSTAMP_SZ 32              /* length of anti-virus scanstamp */
 425
 426 typedef struct xoptattr {
 427         timestruc_t     xoa_createtime; /* Create time of file */
 428         uint8_t         xoa_archive;
 429         uint8_t         xoa_system;
 430         uint8_t         xoa_readonly;
 431         uint8_t         xoa_hidden;
 432         uint8_t         xoa_nounlink;
 433         uint8_t         xoa_immutable;
 434         uint8_t         xoa_appendonly;
 435         uint8_t         xoa_nodump;
 436         uint8_t         xoa_settable;
 437         uint8_t         xoa_opaque;
 438         uint8_t         xoa_av_quarantined;
 439         uint8_t         xoa_av_modified;
 440         uint8_t         xoa_av_scanstamp[AV_SCANSTAMP_SZ];
 441         uint8_t         xoa_reparse;
 442         uint8_t         xoa_offline;
 443         uint8_t         xoa_sparse;
 444 } xoptattr_t;
 445
 446 typedef struct vattr {
 447         uint_t          va_mask;        /* bit-mask of attributes */
 448         u_offset_t      va_size;        /* file size in bytes */
 449 } vattr_t;
 450
 451
 452 typedef struct xvattr {
 453         vattr_t         xva_vattr;      /* Embedded vattr structure */
 454         uint32_t        xva_magic;      /* Magic Number */
 455         uint32_t        xva_mapsize;    /* Size of attr bitmap (32-bit words) */
 456         uint32_t        *xva_rtnattrmapp;       /* Ptr to xva_rtnattrmap[] */
 457         uint32_t        xva_reqattrmap[XVA_MAPSIZE];    /* Requested attrs */
 458         uint32_t        xva_rtnattrmap[XVA_MAPSIZE];    /* Returned attrs */
 459         xoptattr_t      xva_xoptattrs;  /* Optional attributes */
 460 } xvattr_t;
 461
 462 typedef struct vsecattr {
 463         uint_t          vsa_mask;       /* See below */
 464         int             vsa_aclcnt;     /* ACL entry count */
 465         void            *vsa_aclentp;   /* pointer to ACL entries */
 466         int             vsa_dfaclcnt;   /* default ACL entry count */
 467         void            *vsa_dfaclentp; /* pointer to default ACL entries */
 468         size_t          vsa_aclentsz;   /* ACE size in bytes of vsa_aclentp */
 469 } vsecattr_t;
 470
 471 #define AT_TYPE         0x00001
 472 #define AT_MODE         0x00002
 473 #define AT_UID          0x00004
 474 #define AT_GID          0x00008
 475 #define AT_FSID         0x00010
 476 #define AT_NODEID       0x00020
 477 #define AT_NLINK        0x00040
 478 #define AT_SIZE         0x00080
 479 #define AT_ATIME        0x00100
 480 #define AT_MTIME        0x00200
 481 #define AT_CTIME        0x00400
 482 #define AT_RDEV         0x00800
 483 #define AT_BLKSIZE      0x01000
 484 #define AT_NBLOCKS      0x02000
 485 #define AT_SEQ          0x08000
 486 #define AT_XVATTR       0x10000
 487
 488 #define CRCREAT         0
 489
 490 extern int fop_getattr(vnode_t *vp, vattr_t *vap);
 491
 492 #define VOP_CLOSE(vp, f, c, o, cr, ct)  0
 493 #define VOP_PUTPAGE(vp, of, sz, fl, cr, ct)     0
 494 #define VOP_GETATTR(vp, vap, fl, cr, ct)  fop_getattr((vp), (vap));
 495
 496 #define VOP_FSYNC(vp, f, cr, ct)        fsync((vp)->v_fd)
 497
 498 #define VN_RELE(vp)     vn_close(vp)
 499
 500 extern int vn_open(char *path, int x1, int oflags, int mode, vnode_t **vpp,
 501     int x2, int x3);
 502 extern int vn_openat(char *path, int x1, int oflags, int mode, vnode_t **vpp,
 503     int x2, int x3, vnode_t *vp, int fd);
 504 extern int vn_rdwr(int uio, vnode_t *vp, void *addr, ssize_t len,
 505     offset_t offset, int x1, int x2, rlim64_t x3, void *x4, ssize_t *residp);
 506 extern void vn_close(vnode_t *vp);
 507
 508 #define vn_remove(path, x1, x2)         remove(path)
 509 #define vn_rename(from, to, seg)        rename((from), (to))
 510 #define vn_is_readonly(vp)              B_FALSE
 511
 512 extern vnode_t *rootdir;
 513
 514 #include <sys/file.h>           /* for FREAD, FWRITE, etc */
 515
 516 /*
 517  * Random stuff
 518  */
 519 #define ddi_get_lbolt()         (gethrtime() >> 23)
 520 #define ddi_get_lbolt64()       (gethrtime() >> 23)
 521 #define hz      119     /* frequency when using gethrtime() >> 23 for lbolt */
 522
 523 extern void delay(clock_t ticks);
 524
 525 #define gethrestime_sec() time(NULL)
 526 #define gethrestime(t) \
 527         do {\
 528                 (t)->tv_sec = gethrestime_sec();\
 529                 (t)->tv_nsec = 0;\
 530         } while (0);
 531
 532 #define max_ncpus       64
 533
 534 #define minclsyspri     60
 535 #define maxclsyspri     99
 536
 537 #define CPU_SEQID       (pthread_self() & (max_ncpus - 1))
 538
 539 #define kcred           NULL
 540 #define CRED()          NULL
 541
 542 #define ptob(x)         ((x) * PAGESIZE)
 543
 544 extern uint64_t physmem;
 545
 546 extern int highbit(ulong_t i);
 547 extern int random_get_bytes(uint8_t *ptr, size_t len);
 548 extern int random_get_pseudo_bytes(uint8_t *ptr, size_t len);
 549
 550 extern void kernel_init(int);
 551 extern void kernel_fini(void);
 552
 553 struct spa;
 554 extern void nicenum(uint64_t num, char *buf);
 555 extern void show_pool_stats(struct spa *);
 556
 557 typedef struct callb_cpr {
 558         kmutex_t        *cc_lockp;
 559 } callb_cpr_t;
 560
 561 #define CALLB_CPR_INIT(cp, lockp, func, name)   {               \
 562         (cp)->cc_lockp = lockp;                                 \
 563 }
 564
 565 #define CALLB_CPR_SAFE_BEGIN(cp) {                              \
 566         ASSERT(MUTEX_HELD((cp)->cc_lockp));                     \
 567 }
 568
 569 #define CALLB_CPR_SAFE_END(cp, lockp) {                         \
 570         ASSERT(MUTEX_HELD((cp)->cc_lockp));                     \
 571 }
 572
 573 #define CALLB_CPR_EXIT(cp) {                                    \
 574         ASSERT(MUTEX_HELD((cp)->cc_lockp));                     \
 575         mutex_exit((cp)->cc_lockp);                             \
 576 }
 577
 578 #define zone_dataset_visible(x, y)      (1)
 579 #define INGLOBALZONE(z)                 (1)
 580
 581 extern char *kmem_vasprintf(const char *fmt, va_list adx);
 582 extern char *kmem_asprintf(const char *fmt, ...);
 583 #define strfree(str) kmem_free((str), strlen(str)+1)
 584
 585 /*
 586  * Hostname information
 587  */
 588 extern char hw_serial[];        /* for userland-emulated hostid access */
 589 extern int ddi_strtoul(const char *str, char **nptr, int base,
 590     unsigned long *result);
 591
 592 extern int ddi_strtoull(const char *str, char **nptr, int base,
 593     u_longlong_t *result);
 594
 595 /* ZFS Boot Related stuff. */
 596
 597 struct _buf {
 598         intptr_t        _fd;
 599 };
 600
 601 struct bootstat {
 602         uint64_t st_size;
 603 };
 604
 605 typedef struct ace_object {
 606         uid_t           a_who;
 607         uint32_t        a_access_mask;
 608         uint16_t        a_flags;
 609         uint16_t        a_type;
 610         uint8_t         a_obj_type[16];
 611         uint8_t         a_inherit_obj_type[16];
 612 } ace_object_t;
 613
 614
 615 #define ACE_ACCESS_ALLOWED_OBJECT_ACE_TYPE      0x05
 616 #define ACE_ACCESS_DENIED_OBJECT_ACE_TYPE       0x06
 617 #define ACE_SYSTEM_AUDIT_OBJECT_ACE_TYPE        0x07
 618 #define ACE_SYSTEM_ALARM_OBJECT_ACE_TYPE        0x08
 619
 620 extern struct _buf *kobj_open_file(char *name);
 621 extern int kobj_read_file(struct _buf *file, char *buf, unsigned size,
 622     unsigned off);
 623 extern void kobj_close_file(struct _buf *file);
 624 extern int kobj_get_filesize(struct _buf *file, uint64_t *size);
 625 extern int zfs_secpolicy_snapshot_perms(const char *name, cred_t *cr);
 626 extern int zfs_secpolicy_rename_perms(const char *from, const char *to,
 627     cred_t *cr);
 628 extern int zfs_secpolicy_destroy_perms(const char *name, cred_t *cr);
 629 extern zoneid_t getzoneid(void);
 630
 631 /* SID stuff */
 632 typedef struct ksiddomain {
 633         uint_t  kd_ref;
 634         uint_t  kd_len;
 635         char    *kd_name;
 636 } ksiddomain_t;
 637
 638 ksiddomain_t *ksid_lookupdomain(const char *);
 639 void ksiddomain_rele(ksiddomain_t *);
 640
 641 #define DDI_SLEEP       KM_SLEEP
 642 #define ddi_log_sysevent(_a, _b, _c, _d, _e, _f, _g) \
 643         sysevent_post_event(_c, _d, _b, "libzpool", _e, _f)
 644
 645 #endif /* _KERNEL */
 646
 647 #endif  /* _SYS_ZFS_CONTEXT_H */