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 2007 Sun Microsystems, Inc. All rights reserved.
23 * Use is subject to license terms.
26 #ifndef _SYS_ZFS_CONTEXT_H
27 #define _SYS_ZFS_CONTEXT_H
29 #pragma ident "%Z%%M% %I% %E% SMI"
37 #define _SYS_CONDVAR_H
66 #include <sys/types.h>
67 #include <sys/atomic.h>
68 #include <sys/sysmacros.h>
69 #include <sys/bitmap.h>
70 #include <sys/resource.h>
71 #include <sys/byteorder.h>
75 #include <sys/mntent.h>
76 #include <sys/mnttab.h>
77 #include <sys/zfs_debug.h>
78 #include <sys/debug.h>
80 #include <sys/kstat.h>
81 #include <sys/kernel.h>
83 #include <machine/atomic.h>
85 #define ZFS_EXPORTS_PATH "/etc/zfs/exports"
92 * Note that we are not using the debugging levels.
95 #define CE_CONT 0 /* continuation */
96 #define CE_NOTE 1 /* notice */
97 #define CE_WARN 2 /* warning */
98 #define CE_PANIC 3 /* panic */
99 #define CE_IGNORE 4 /* print nothing */
105 #define ZFS_LOG(...) do { } while (0)
107 typedef u_longlong_t rlim64_t;
108 #define RLIM64_INFINITY ((rlim64_t)-3)
111 extern void dprintf_setup(int *argc, char **argv);
112 #endif /* ZFS_DEBUG */
114 extern void cmn_err(int, const char *, ...);
115 extern void vcmn_err(int, const char *, __va_list);
116 extern void panic(const char *, ...);
117 extern void vpanic(const char *, __va_list);
119 /* This definition is copied from assert.h. */
120 #if defined(__STDC__)
121 #if __STDC_VERSION__ - 0 >= 199901L
122 #define verify(EX) (void)((EX) || \
123 (__assert_c99(#EX, __FILE__, __LINE__, __func__), 0))
125 #define verify(EX) (void)((EX) || (__assert(#EX, __FILE__, __LINE__), 0))
126 #endif /* __STDC_VERSION__ - 0 >= 199901L */
128 #define verify(EX) (void)((EX) || (_assert("EX", __FILE__, __LINE__), 0))
129 #endif /* __STDC__ */
132 #define VERIFY verify
133 #define ASSERT assert
135 extern void __assert(const char *, const char *, int);
138 #define VERIFY3_IMPL(x, y, z, t) if (x == z) ((void)0)
141 #define VERIFY3_IMPL(LEFT, OP, RIGHT, TYPE) do { \
142 const TYPE __left = (TYPE)(LEFT); \
143 const TYPE __right = (TYPE)(RIGHT); \
144 if (!(__left OP __right)) { \
145 char *__buf = alloca(256); \
146 (void) snprintf(__buf, 256, "%s %s %s (0x%llx %s 0x%llx)", \
147 #LEFT, #OP, #RIGHT, \
148 (u_longlong_t)__left, #OP, (u_longlong_t)__right); \
149 __assert(__buf, __FILE__, __LINE__); \
151 _NOTE(CONSTCOND) } while (0)
155 #define VERIFY3S(x, y, z) VERIFY3_IMPL(x, y, z, int64_t)
156 #define VERIFY3U(x, y, z) VERIFY3_IMPL(x, y, z, uint64_t)
157 #define VERIFY3P(x, y, z) VERIFY3_IMPL(x, y, z, uintptr_t)
160 #define ASSERT3S(x, y, z) ((void)0)
161 #define ASSERT3U(x, y, z) ((void)0)
162 #define ASSERT3P(x, y, z) ((void)0)
164 #define ASSERT3S(x, y, z) VERIFY3S(x, y, z)
165 #define ASSERT3U(x, y, z) VERIFY3U(x, y, z)
166 #define ASSERT3P(x, y, z) VERIFY3P(x, y, z)
170 * Dtrace SDT probes have different signatures in userland than they do in
171 * kernel. If they're being used in kernel code, re-define them out of
172 * existence for their counterparts in libzpool.
177 #define DTRACE_PROBE1(a, b, c) ((void)0)
178 #endif /* DTRACE_PROBE1 */
182 #define DTRACE_PROBE2(a, b, c, d, e) ((void)0)
183 #endif /* DTRACE_PROBE2 */
187 #define DTRACE_PROBE3(a, b, c, d, e, f, g) ((void)0)
188 #endif /* DTRACE_PROBE3 */
192 #define DTRACE_PROBE4(a, b, c, d, e, f, g, h, i) ((void)0)
193 #endif /* DTRACE_PROBE4 */
198 #define curthread ((void *)(uintptr_t)thr_self())
200 typedef struct kthread kthread_t;
202 #define thread_create(stk, stksize, func, arg, len, pp, state, pri) \
203 zk_thread_create(func, arg)
204 #define thread_exit() thr_exit(NULL)
206 extern kthread_t *zk_thread_create(void (*func)(), void *arg);
208 #define issig(why) (FALSE)
209 #define ISSIG(thr, why) (FALSE)
214 typedef struct kmutex {
219 #define MUTEX_DEFAULT USYNC_THREAD
221 #define MUTEX_HELD(m) ((m)->m_owner == curthread)
224 * Argh -- we have to get cheesy here because the kernel and userland
225 * have different signatures for the same routine.
227 //extern int _mutex_init(mutex_t *mp, int type, void *arg);
228 //extern int _mutex_destroy(mutex_t *mp);
230 #define mutex_init(mp, b, c, d) zmutex_init((kmutex_t *)(mp))
231 #define mutex_destroy(mp) zmutex_destroy((kmutex_t *)(mp))
233 extern void zmutex_init(kmutex_t *mp);
234 extern void zmutex_destroy(kmutex_t *mp);
235 extern void mutex_enter(kmutex_t *mp);
236 extern void mutex_exit(kmutex_t *mp);
237 extern int mutex_tryenter(kmutex_t *mp);
238 extern void *mutex_owner(kmutex_t *mp);
243 typedef struct krwlock {
253 #define RW_DEFAULT USYNC_THREAD
258 #define RW_WRITE_HELD(x) ((x)->rw_owner == curthread)
259 #define RW_LOCK_HELD(x) rw_lock_held(x)
261 extern void rw_init(krwlock_t *rwlp, char *name, int type, void *arg);
262 extern void rw_destroy(krwlock_t *rwlp);
263 extern void rw_enter(krwlock_t *rwlp, krw_t rw);
264 extern int rw_tryenter(krwlock_t *rwlp, krw_t rw);
265 extern int rw_tryupgrade(krwlock_t *rwlp);
266 extern void rw_exit(krwlock_t *rwlp);
267 extern int rw_lock_held(krwlock_t *rwlp);
268 #define rw_downgrade(rwlp) do { } while (0)
271 * Condition variables
273 typedef cond_t kcondvar_t;
275 #define CV_DEFAULT USYNC_THREAD
277 extern void cv_init(kcondvar_t *cv, char *name, int type, void *arg);
278 extern void cv_destroy(kcondvar_t *cv);
279 extern void cv_wait(kcondvar_t *cv, kmutex_t *mp);
280 extern clock_t cv_timedwait(kcondvar_t *cv, kmutex_t *mp, clock_t abstime);
281 extern void cv_signal(kcondvar_t *cv);
282 extern void cv_broadcast(kcondvar_t *cv);
287 #define KM_SLEEP UMEM_NOFAIL
288 #define KM_NOSLEEP UMEM_DEFAULT
289 #define KMC_NODEBUG UMC_NODEBUG
290 #define kmem_alloc(_s, _f) umem_alloc(_s, _f)
291 #define kmem_zalloc(_s, _f) umem_zalloc(_s, _f)
292 #define kmem_free(_b, _s) umem_free(_b, _s)
293 #define kmem_size() (physmem * PAGESIZE)
294 #define kmem_cache_create(_a, _b, _c, _d, _e, _f, _g, _h, _i) \
295 umem_cache_create(_a, _b, _c, _d, _e, _f, _g, _h, _i)
296 #define kmem_cache_destroy(_c) umem_cache_destroy(_c)
297 #define kmem_cache_alloc(_c, _f) umem_cache_alloc(_c, _f)
298 #define kmem_cache_free(_c, _b) umem_cache_free(_c, _b)
299 #define kmem_debugging() 0
300 #define kmem_cache_reap_now(c)
302 typedef umem_cache_t kmem_cache_t;
307 typedef struct taskq taskq_t;
308 typedef uintptr_t taskqid_t;
309 typedef void (task_func_t)(void *);
311 #define TASKQ_PREPOPULATE 0x0001
312 #define TASKQ_CPR_SAFE 0x0002 /* Use CPR safe protocol */
313 #define TASKQ_DYNAMIC 0x0004 /* Use dynamic thread scheduling */
315 #define TQ_SLEEP KM_SLEEP /* Can block for memory */
316 #define TQ_NOSLEEP KM_NOSLEEP /* cannot block for memory; may fail */
317 #define TQ_NOQUEUE 0x02 /* Do not enqueue if can't dispatch */
319 extern taskq_t *taskq_create(const char *, int, pri_t, int, int, uint_t);
320 extern taskqid_t taskq_dispatch(taskq_t *, task_func_t, void *, uint_t);
321 extern void taskq_destroy(taskq_t *);
322 extern void taskq_wait(taskq_t *);
323 extern int taskq_member(taskq_t *, void *);
328 typedef struct vnode {
334 typedef struct vattr {
335 uint_t va_mask; /* bit-mask of attributes */
336 u_offset_t va_size; /* file size in bytes */
339 #define AT_TYPE 0x0001
340 #define AT_MODE 0x0002
341 #define AT_UID 0x0004
342 #define AT_GID 0x0008
343 #define AT_FSID 0x0010
344 #define AT_NODEID 0x0020
345 #define AT_NLINK 0x0040
346 #define AT_SIZE 0x0080
347 #define AT_ATIME 0x0100
348 #define AT_MTIME 0x0200
349 #define AT_CTIME 0x0400
350 #define AT_RDEV 0x0800
351 #define AT_BLKSIZE 0x1000
352 #define AT_NBLOCKS 0x2000
353 #define AT_SEQ 0x8000
357 #define VOP_CLOSE(vp, f, c, o, cr) 0
358 #define VOP_PUTPAGE(vp, of, sz, fl, cr) 0
359 #define VOP_GETATTR(vp, vap, fl, cr) ((vap)->va_size = (vp)->v_size, 0)
361 #define VOP_FSYNC(vp, f, cr) fsync((vp)->v_fd)
363 #define VN_RELE(vp) vn_close(vp)
365 extern int vn_open(char *path, int x1, int oflags, int mode, vnode_t **vpp,
367 extern int vn_openat(char *path, int x1, int oflags, int mode, vnode_t **vpp,
368 int x2, int x3, vnode_t *vp);
369 extern int vn_rdwr(int uio, vnode_t *vp, void *addr, ssize_t len,
370 offset_t offset, int x1, int x2, rlim64_t x3, void *x4, ssize_t *residp);
371 extern void vn_close(vnode_t *vp);
373 #define vn_remove(path, x1, x2) remove(path)
374 #define vn_rename(from, to, seg) rename((from), (to))
375 #define vn_is_readonly(vp) B_FALSE
377 extern vnode_t *rootdir;
379 #include <sys/file.h> /* for FREAD, FWRITE, etc */
380 #define FTRUNC O_TRUNC
385 #define lbolt (gethrtime() >> 23)
386 #define lbolt64 (gethrtime() >> 23)
387 //#define hz 119 /* frequency when using gethrtime() >> 23 for lbolt */
389 extern void delay(clock_t ticks);
391 #define gethrestime_sec() time(NULL)
395 #define minclsyspri 60
396 #define maxclsyspri 99
398 #define CPU_SEQID (thr_self() & (max_ncpus - 1))
403 extern uint64_t physmem;
405 extern int highbit(ulong_t i);
406 extern int random_get_bytes(uint8_t *ptr, size_t len);
407 extern int random_get_pseudo_bytes(uint8_t *ptr, size_t len);
409 extern void kernel_init(int);
410 extern void kernel_fini(void);
413 extern void nicenum(uint64_t num, char *buf);
414 extern void show_pool_stats(struct spa *);
416 typedef struct callb_cpr {
420 #define CALLB_CPR_INIT(cp, lockp, func, name) { \
421 (cp)->cc_lockp = lockp; \
424 #define CALLB_CPR_SAFE_BEGIN(cp) { \
425 ASSERT(MUTEX_HELD((cp)->cc_lockp)); \
428 #define CALLB_CPR_SAFE_END(cp, lockp) { \
429 ASSERT(MUTEX_HELD((cp)->cc_lockp)); \
432 #define CALLB_CPR_EXIT(cp) { \
433 ASSERT(MUTEX_HELD((cp)->cc_lockp)); \
434 mutex_exit((cp)->cc_lockp); \
437 #define zone_dataset_visible(x, y) (1)
438 #define INGLOBALZONE(z) (1)
441 * Hostname information
443 extern struct utsname utsname;
444 extern char hw_serial[];
445 extern int ddi_strtoul(const char *str, char **nptr, int base,
446 unsigned long *result);
448 /* ZFS Boot Related stuff. */
458 extern struct _buf *kobj_open_file(char *name);
459 extern int kobj_read_file(struct _buf *file, char *buf, unsigned size,
461 extern void kobj_close_file(struct _buf *file);
462 extern int kobj_get_filesize(struct _buf *file, uint64_t *size);
463 /* Random compatibility stuff. */
464 #define lbolt (gethrtime() >> 23)
465 #define lbolt64 (gethrtime() >> 23)
468 extern uint64_t physmem;
470 #define gethrestime_sec() time(NULL)
472 #define pwrite64(d, p, n, o) pwrite(d, p, n, o)
473 #define readdir64(d) readdir(d)
474 #define SIGPENDING(td) (0)
475 #define root_mount_wait() do { } while (0)
476 #define root_mounted() (1)
482 #define FCREAT O_CREAT
485 #define SX_SYSINIT(name, lock, desc)
487 #define SYSCTL_DECL(...)
488 #define SYSCTL_NODE(...)
489 #define SYSCTL_INT(...)
490 #define SYSCTL_ULONG(...)
495 #define TUNABLE_INT(...)
496 #define TUNABLE_ULONG(...)
501 #define ERESTART (-1)
508 #endif /* _SYS_ZFS_CONTEXT_H */