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.
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.
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]
22 * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
23 * Copyright (c) 2012, Joyent, Inc. All rights reserved.
26 #ifndef _SYS_ZFS_CONTEXT_H
27 #define _SYS_ZFS_CONTEXT_H
35 #define _SYS_CONDVAR_H
64 #include <sys/types.h>
66 #include <sys/atomic.h>
67 #include <sys/sysmacros.h>
68 #include <sys/bitmap.h>
69 #include <sys/resource.h>
70 #include <sys/byteorder.h>
74 #include <sys/mntent.h>
75 #include <sys/mnttab.h>
76 #include <sys/zfs_debug.h>
78 #include <sys/kstat.h>
79 #include <sys/u8_textprep.h>
80 #include <sys/kernel.h>
82 #include <sys/sysevent.h>
83 #include <sys/sysevent/eventdefs.h>
84 #include <sys/sysevent/dev.h>
85 #include <machine/atomic.h>
86 #include <sys/debug.h>
88 #define ZFS_EXPORTS_PATH "/etc/zfs/exports"
95 * Note that we are not using the debugging levels.
98 #define CE_CONT 0 /* continuation */
99 #define CE_NOTE 1 /* notice */
100 #define CE_WARN 2 /* warning */
101 #define CE_PANIC 3 /* panic */
102 #define CE_IGNORE 4 /* print nothing */
108 #define ZFS_LOG(...) do { } while (0)
110 typedef u_longlong_t rlim64_t;
111 #define RLIM64_INFINITY ((rlim64_t)-3)
114 extern void dprintf_setup(int *argc, char **argv);
115 #endif /* ZFS_DEBUG */
117 extern void cmn_err(int, const char *, ...);
118 extern void vcmn_err(int, const char *, __va_list);
119 extern void panic(const char *, ...);
120 extern void vpanic(const char *, __va_list);
122 #define fm_panic panic
127 * DTrace SDT probes have different signatures in userland than they do in
128 * kernel. If they're being used in kernel code, re-define them out of
129 * existence for their counterparts in libzpool.
134 #define DTRACE_PROBE(a) ((void)0)
135 #endif /* DTRACE_PROBE */
139 #define DTRACE_PROBE1(a, b, c) ((void)0)
140 #endif /* DTRACE_PROBE1 */
144 #define DTRACE_PROBE2(a, b, c, d, e) ((void)0)
145 #endif /* DTRACE_PROBE2 */
149 #define DTRACE_PROBE3(a, b, c, d, e, f, g) ((void)0)
150 #endif /* DTRACE_PROBE3 */
154 #define DTRACE_PROBE4(a, b, c, d, e, f, g, h, i) ((void)0)
155 #endif /* DTRACE_PROBE4 */
160 #define curthread ((void *)(uintptr_t)thr_self())
162 typedef struct kthread kthread_t;
164 #define thread_create(stk, stksize, func, arg, len, pp, state, pri) \
165 zk_thread_create(func, arg)
166 #define thread_exit() thr_exit(NULL)
167 #define thread_join(t) panic("libzpool cannot join threads")
169 #define newproc(f, a, cid, pri, ctp, pid) (ENOSYS)
171 /* in libzpool, p0 exists only to have its address taken */
173 uintptr_t this_is_never_used_dont_dereference_it;
176 extern struct proc p0;
177 #define curproc (&p0)
181 extern kthread_t *zk_thread_create(void (*func)(), void *arg);
183 #define issig(why) (FALSE)
184 #define ISSIG(thr, why) (FALSE)
189 typedef struct kmutex {
191 boolean_t initialized;
195 #define MUTEX_DEFAULT USYNC_THREAD
197 #undef MUTEX_NOT_HELD
198 #define MUTEX_HELD(m) ((m)->m_owner == curthread)
199 #define MUTEX_NOT_HELD(m) (!MUTEX_HELD(m))
200 #define _mutex_held(m) pthread_mutex_isowned_np(m)
203 * Argh -- we have to get cheesy here because the kernel and userland
204 * have different signatures for the same routine.
206 //extern int _mutex_init(mutex_t *mp, int type, void *arg);
207 //extern int _mutex_destroy(mutex_t *mp);
208 //extern int _mutex_owned(mutex_t *mp);
210 #define mutex_init(mp, b, c, d) zmutex_init((kmutex_t *)(mp))
211 #define mutex_destroy(mp) zmutex_destroy((kmutex_t *)(mp))
212 #define mutex_owned(mp) zmutex_owned((kmutex_t *)(mp))
214 extern void zmutex_init(kmutex_t *mp);
215 extern void zmutex_destroy(kmutex_t *mp);
216 extern int zmutex_owned(kmutex_t *mp);
217 extern void mutex_enter(kmutex_t *mp);
218 extern void mutex_exit(kmutex_t *mp);
219 extern int mutex_tryenter(kmutex_t *mp);
220 extern void *mutex_owner(kmutex_t *mp);
225 typedef struct krwlock {
228 boolean_t initialized;
236 #define RW_DEFAULT USYNC_THREAD
239 #define RW_READ_HELD(x) ((x)->rw_owner == NULL && (x)->rw_count > 0)
242 #define RW_WRITE_HELD(x) ((x)->rw_owner == curthread)
243 #define RW_LOCK_HELD(x) rw_lock_held(x)
245 extern void rw_init(krwlock_t *rwlp, char *name, int type, void *arg);
246 extern void rw_destroy(krwlock_t *rwlp);
247 extern void rw_enter(krwlock_t *rwlp, krw_t rw);
248 extern int rw_tryenter(krwlock_t *rwlp, krw_t rw);
249 extern int rw_tryupgrade(krwlock_t *rwlp);
250 extern void rw_exit(krwlock_t *rwlp);
251 extern int rw_lock_held(krwlock_t *rwlp);
252 #define rw_downgrade(rwlp) do { } while (0)
254 extern uid_t crgetuid(cred_t *cr);
255 extern gid_t crgetgid(cred_t *cr);
256 extern int crgetngroups(cred_t *cr);
257 extern gid_t *crgetgroups(cred_t *cr);
260 * Condition variables
262 typedef cond_t kcondvar_t;
264 #define CV_DEFAULT USYNC_THREAD
266 extern void cv_init(kcondvar_t *cv, char *name, int type, void *arg);
267 extern void cv_destroy(kcondvar_t *cv);
268 extern void cv_wait(kcondvar_t *cv, kmutex_t *mp);
269 extern clock_t cv_timedwait(kcondvar_t *cv, kmutex_t *mp, clock_t abstime);
270 extern void cv_signal(kcondvar_t *cv);
271 extern void cv_broadcast(kcondvar_t *cv);
276 #define KM_SLEEP UMEM_NOFAIL
277 #define KM_PUSHPAGE KM_SLEEP
278 #define KM_NOSLEEP UMEM_DEFAULT
279 #define KMC_NODEBUG UMC_NODEBUG
280 #define KMC_NOTOUCH 0 /* not needed for userland caches */
281 #define kmem_alloc(_s, _f) umem_alloc(_s, _f)
282 #define kmem_zalloc(_s, _f) umem_zalloc(_s, _f)
283 #define kmem_free(_b, _s) umem_free(_b, _s)
284 #define kmem_size() (physmem * PAGESIZE)
285 #define kmem_cache_create(_a, _b, _c, _d, _e, _f, _g, _h, _i) \
286 umem_cache_create(_a, _b, _c, _d, _e, _f, _g, _h, _i)
287 #define kmem_cache_destroy(_c) umem_cache_destroy(_c)
288 #define kmem_cache_alloc(_c, _f) umem_cache_alloc(_c, _f)
289 #define kmem_cache_free(_c, _b) umem_cache_free(_c, _b)
290 #define kmem_debugging() 0
291 #define kmem_cache_reap_now(_c) /* nothing */
292 #define kmem_cache_set_move(_c, _cb) /* nothing */
293 #define POINTER_INVALIDATE(_pp) /* nothing */
294 #define POINTER_IS_VALID(_p) 0
296 typedef umem_cache_t kmem_cache_t;
298 typedef enum kmem_cbrc {
309 typedef struct taskq taskq_t;
310 typedef uintptr_t taskqid_t;
311 typedef void (task_func_t)(void *);
313 #define TASKQ_PREPOPULATE 0x0001
314 #define TASKQ_CPR_SAFE 0x0002 /* Use CPR safe protocol */
315 #define TASKQ_DYNAMIC 0x0004 /* Use dynamic thread scheduling */
316 #define TASKQ_THREADS_CPU_PCT 0x0008 /* Scale # threads by # cpus */
317 #define TASKQ_DC_BATCH 0x0010 /* Mark threads as batch */
319 #define TQ_SLEEP KM_SLEEP /* Can block for memory */
320 #define TQ_NOSLEEP KM_NOSLEEP /* cannot block for memory; may fail */
321 #define TQ_NOQUEUE 0x02 /* Do not enqueue if can't dispatch */
322 #define TQ_FRONT 0x08 /* Queue in front */
324 extern taskq_t *system_taskq;
326 extern taskq_t *taskq_create(const char *, int, pri_t, int, int, uint_t);
327 #define taskq_create_proc(a, b, c, d, e, p, f) \
328 (taskq_create(a, b, c, d, e, f))
329 #define taskq_create_sysdc(a, b, d, e, p, dc, f) \
330 (taskq_create(a, b, maxclsyspri, d, e, f))
331 extern taskqid_t taskq_dispatch(taskq_t *, task_func_t, void *, uint_t);
332 extern void taskq_destroy(taskq_t *);
333 extern void taskq_wait(taskq_t *);
334 extern int taskq_member(taskq_t *, void *);
335 extern void system_taskq_init(void);
336 extern void system_taskq_fini(void);
338 #define taskq_dispatch_safe(tq, func, arg, flags, task) \
339 taskq_dispatch((tq), (func), (arg), (flags))
341 #define XVA_MAPSIZE 3
342 #define XVA_MAGIC 0x78766174
347 typedef struct vnode {
353 #define AV_SCANSTAMP_SZ 32 /* length of anti-virus scanstamp */
355 typedef struct xoptattr {
356 timestruc_t xoa_createtime; /* Create time of file */
359 uint8_t xoa_readonly;
361 uint8_t xoa_nounlink;
362 uint8_t xoa_immutable;
363 uint8_t xoa_appendonly;
365 uint8_t xoa_settable;
367 uint8_t xoa_av_quarantined;
368 uint8_t xoa_av_modified;
369 uint8_t xoa_av_scanstamp[AV_SCANSTAMP_SZ];
375 typedef struct vattr {
376 uint_t va_mask; /* bit-mask of attributes */
377 u_offset_t va_size; /* file size in bytes */
381 typedef struct xvattr {
382 vattr_t xva_vattr; /* Embedded vattr structure */
383 uint32_t xva_magic; /* Magic Number */
384 uint32_t xva_mapsize; /* Size of attr bitmap (32-bit words) */
385 uint32_t *xva_rtnattrmapp; /* Ptr to xva_rtnattrmap[] */
386 uint32_t xva_reqattrmap[XVA_MAPSIZE]; /* Requested attrs */
387 uint32_t xva_rtnattrmap[XVA_MAPSIZE]; /* Returned attrs */
388 xoptattr_t xva_xoptattrs; /* Optional attributes */
391 typedef struct vsecattr {
392 uint_t vsa_mask; /* See below */
393 int vsa_aclcnt; /* ACL entry count */
394 void *vsa_aclentp; /* pointer to ACL entries */
395 int vsa_dfaclcnt; /* default ACL entry count */
396 void *vsa_dfaclentp; /* pointer to default ACL entries */
397 size_t vsa_aclentsz; /* ACE size in bytes of vsa_aclentp */
400 #define AT_TYPE 0x00001
401 #define AT_MODE 0x00002
402 #define AT_UID 0x00004
403 #define AT_GID 0x00008
404 #define AT_FSID 0x00010
405 #define AT_NODEID 0x00020
406 #define AT_NLINK 0x00040
407 #define AT_SIZE 0x00080
408 #define AT_ATIME 0x00100
409 #define AT_MTIME 0x00200
410 #define AT_CTIME 0x00400
411 #define AT_RDEV 0x00800
412 #define AT_BLKSIZE 0x01000
413 #define AT_NBLOCKS 0x02000
414 #define AT_SEQ 0x08000
415 #define AT_XVATTR 0x10000
419 extern int fop_getattr(vnode_t *vp, vattr_t *vap);
421 #define VOP_CLOSE(vp, f, c, o, cr, ct) 0
422 #define VOP_PUTPAGE(vp, of, sz, fl, cr, ct) 0
423 #define VOP_GETATTR(vp, vap, cr) fop_getattr((vp), (vap));
425 #define VOP_FSYNC(vp, f, cr, ct) fsync((vp)->v_fd)
427 #define VN_RELE(vp) vn_close(vp, 0, NULL, NULL)
428 #define VN_RELE_ASYNC(vp, taskq) vn_close(vp, 0, NULL, NULL)
430 #define vn_lock(vp, type)
431 #define VOP_UNLOCK(vp, type)
432 #ifdef VFS_LOCK_GIANT
433 #undef VFS_LOCK_GIANT
435 #define VFS_LOCK_GIANT(mp) 0
436 #ifdef VFS_UNLOCK_GIANT
437 #undef VFS_UNLOCK_GIANT
439 #define VFS_UNLOCK_GIANT(vfslocked)
441 extern int vn_open(char *path, int x1, int oflags, int mode, vnode_t **vpp,
443 extern int vn_openat(char *path, int x1, int oflags, int mode, vnode_t **vpp,
444 int x2, int x3, vnode_t *vp, int fd);
445 extern int vn_rdwr(int uio, vnode_t *vp, void *addr, ssize_t len,
446 offset_t offset, int x1, int x2, rlim64_t x3, void *x4, ssize_t *residp);
447 extern void vn_close(vnode_t *vp, int openflag, cred_t *cr, kthread_t *td);
449 #define vn_remove(path, x1, x2) remove(path)
450 #define vn_rename(from, to, seg) rename((from), (to))
451 #define vn_is_readonly(vp) B_FALSE
453 extern vnode_t *rootdir;
455 #include <sys/file.h> /* for FREAD, FWRITE, etc */
456 #define FTRUNC O_TRUNC
461 #define ddi_get_lbolt() (gethrtime() >> 23)
462 #define ddi_get_lbolt64() (gethrtime() >> 23)
463 #define hz 119 /* frequency when using gethrtime() >> 23 for lbolt */
465 extern void delay(clock_t ticks);
467 #define gethrestime_sec() time(NULL)
468 #define gethrestime(t) \
470 (t)->tv_sec = gethrestime_sec();\
476 #define minclsyspri 60
477 #define maxclsyspri 99
479 #define CPU_SEQID (thr_self() & (max_ncpus - 1))
485 #define ptob(x) ((x) * PAGESIZE)
488 extern uint64_t physmem;
490 extern int highbit(ulong_t i);
491 extern int random_get_bytes(uint8_t *ptr, size_t len);
492 extern int random_get_pseudo_bytes(uint8_t *ptr, size_t len);
494 extern void kernel_init(int);
495 extern void kernel_fini(void);
498 extern void nicenum(uint64_t num, char *buf);
499 extern void show_pool_stats(struct spa *);
501 typedef struct callb_cpr {
505 #define CALLB_CPR_INIT(cp, lockp, func, name) { \
506 (cp)->cc_lockp = lockp; \
509 #define CALLB_CPR_SAFE_BEGIN(cp) { \
510 ASSERT(MUTEX_HELD((cp)->cc_lockp)); \
513 #define CALLB_CPR_SAFE_END(cp, lockp) { \
514 ASSERT(MUTEX_HELD((cp)->cc_lockp)); \
517 #define CALLB_CPR_EXIT(cp) { \
518 ASSERT(MUTEX_HELD((cp)->cc_lockp)); \
519 mutex_exit((cp)->cc_lockp); \
522 #define zone_dataset_visible(x, y) (1)
523 #define INGLOBALZONE(z) (1)
525 extern char *kmem_asprintf(const char *fmt, ...);
526 #define strfree(str) kmem_free((str), strlen(str)+1)
529 * Hostname information
531 extern struct utsname utsname;
532 extern char hw_serial[]; /* for userland-emulated hostid access */
533 extern int ddi_strtoul(const char *str, char **nptr, int base,
534 unsigned long *result);
536 extern int ddi_strtoull(const char *str, char **nptr, int base,
537 u_longlong_t *result);
539 /* ZFS Boot Related stuff. */
549 typedef struct ace_object {
551 uint32_t a_access_mask;
554 uint8_t a_obj_type[16];
555 uint8_t a_inherit_obj_type[16];
559 #define ACE_ACCESS_ALLOWED_OBJECT_ACE_TYPE 0x05
560 #define ACE_ACCESS_DENIED_OBJECT_ACE_TYPE 0x06
561 #define ACE_SYSTEM_AUDIT_OBJECT_ACE_TYPE 0x07
562 #define ACE_SYSTEM_ALARM_OBJECT_ACE_TYPE 0x08
564 extern struct _buf *kobj_open_file(char *name);
565 extern int kobj_read_file(struct _buf *file, char *buf, unsigned size,
567 extern void kobj_close_file(struct _buf *file);
568 extern int kobj_get_filesize(struct _buf *file, uint64_t *size);
569 extern int zfs_secpolicy_snapshot_perms(const char *name, cred_t *cr);
570 extern int zfs_secpolicy_rename_perms(const char *from, const char *to,
572 extern int zfs_secpolicy_destroy_perms(const char *name, cred_t *cr);
573 extern zoneid_t getzoneid(void);
574 /* Random compatibility stuff. */
575 #define lbolt (gethrtime() >> 23)
576 #define lbolt64 (gethrtime() >> 23)
578 extern uint64_t physmem;
580 #define gethrestime_sec() time(NULL)
582 #define pwrite64(d, p, n, o) pwrite(d, p, n, o)
583 #define readdir64(d) readdir(d)
584 #define SIGPENDING(td) (0)
585 #define root_mount_wait() do { } while (0)
586 #define root_mounted() (1)
592 #define FCREAT O_CREAT
596 typedef struct ksiddomain {
602 ksiddomain_t *ksid_lookupdomain(const char *);
603 void ksiddomain_rele(ksiddomain_t *);
605 typedef uint32_t idmap_rid_t;
607 #define DDI_SLEEP KM_SLEEP
608 #define ddi_log_sysevent(_a, _b, _c, _d, _e, _f, _g) (0)
610 #define SX_SYSINIT(name, lock, desc)
612 #define SYSCTL_DECL(...)
613 #define SYSCTL_NODE(...)
614 #define SYSCTL_INT(...)
615 #define SYSCTL_UINT(...)
616 #define SYSCTL_ULONG(...)
617 #define SYSCTL_QUAD(...)
623 #define TUNABLE_INT(...)
624 #define TUNABLE_ULONG(...)
625 #define TUNABLE_QUAD(...)
630 #define ERESTART (-1)
637 #endif /* _SYS_ZFS_CONTEXT_H */