[mirror_zfs.git] / lib / libzpool / include / sys / zfs_context.h

/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License (the "License").
 * You may not use this file except in compliance with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */
/*
 * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
 */

#ifndef _SYS_ZFS_CONTEXT_H
#define	_SYS_ZFS_CONTEXT_H

#ifdef	__cplusplus
extern "C" {
#endif

#define	_SYS_MUTEX_H
#define	_SYS_RWLOCK_H
#define	_SYS_CONDVAR_H
#define	_SYS_SYSTM_H
#define	_SYS_DEBUG_H
#define	_SYS_T_LOCK_H
#define	_SYS_VNODE_H
#define	_SYS_VFS_H
#define	_SYS_SUNDDI_H
#define	_SYS_CALLB_H

#include <stdio.h>
#include <stdlib.h>
#include <stddef.h>
#include <stdarg.h>
#include <fcntl.h>
#include <unistd.h>
#include <errno.h>
#include <string.h>
#include <strings.h>
#include <pthread.h>
#include <assert.h>
#include <alloca.h>
#include <umem.h>
#include <limits.h>
#include <atomic.h>
#include <dirent.h>
#include <time.h>
#include <libsysevent.h>
#include <sys/note.h>
#include <sys/types.h>
#include <sys/cred.h>
#include <sys/sysmacros.h>
#include <sys/bitmap.h>
#include <sys/resource.h>
#include <sys/byteorder.h>
#include <sys/list.h>
#include <sys/uio.h>
#include <sys/zfs_debug.h>
#include <sys/sdt.h>
#include <sys/kstat.h>
#include <sys/u8_textprep.h>
#include <sys/sysevent/eventdefs.h>
#include <sys/sysevent/dev.h>
#include <sys/sunddi.h>

/*
 * Stack
 */

#define  noinline	__attribute__((noinline))

/*
 * Debugging
 */

/*
 * Note that we are not using the debugging levels.
 */

#define	CE_CONT		0	/* continuation		*/
#define	CE_NOTE		1	/* notice		*/
#define	CE_WARN		2	/* warning		*/
#define	CE_PANIC	3	/* panic		*/
#define	CE_IGNORE	4	/* print nothing	*/

extern int aok;

/*
 * ZFS debugging
 */

#ifdef ZFS_DEBUG
extern void dprintf_setup(int *argc, char **argv);
#endif /* ZFS_DEBUG */

extern void cmn_err(int, const char *, ...);
extern void vcmn_err(int, const char *, __va_list);
extern void panic(const char *, ...);
extern void vpanic(const char *, __va_list);

#define	fm_panic	panic

extern int aok;

/* This definition is copied from assert.h. */
#if defined(__STDC__)
#if __STDC_VERSION__ - 0 >= 199901L
#define	zverify(EX) (void)((EX) || (aok) || \
	(__assert_c99(#EX, __FILE__, __LINE__, __func__), 0))
#else
#define	zverify(EX) (void)((EX) || (aok) || \
	(__assert(#EX, __FILE__, __LINE__), 0))
#endif /* __STDC_VERSION__ - 0 >= 199901L */
#else
#define	zverify(EX) (void)((EX) || (aok) || \
	(_assert("EX", __FILE__, __LINE__), 0))
#endif	/* __STDC__ */


#define	VERIFY	zverify
#define	ASSERT	zverify
#undef	assert
#define	assert	zverify

extern void __assert(const char *, const char *, int);

#ifdef lint
#define	VERIFY3_IMPL(x, y, z, t)	if (x == z) ((void)0)
#else
/* BEGIN CSTYLED */
#define	VERIFY3_IMPL(LEFT, OP, RIGHT, TYPE) do { \
	const TYPE __left = (TYPE)(LEFT); \
	const TYPE __right = (TYPE)(RIGHT); \
	if (!(__left OP __right) && (!aok)) { \
		char *__buf = alloca(256); \
		(void) snprintf(__buf, 256, "%s %s %s (0x%llx %s 0x%llx)", \
			#LEFT, #OP, #RIGHT, \
			(u_longlong_t)__left, #OP, (u_longlong_t)__right); \
		__assert(__buf, __FILE__, __LINE__); \
	} \
_NOTE(CONSTCOND) } while (0)
/* END CSTYLED */
#endif /* lint */

#define	VERIFY3S(x, y, z)	VERIFY3_IMPL(x, y, z, int64_t)
#define	VERIFY3U(x, y, z)	VERIFY3_IMPL(x, y, z, uint64_t)
#define	VERIFY3P(x, y, z)	VERIFY3_IMPL(x, y, z, uintptr_t)

#ifdef NDEBUG
#define	ASSERT3S(x, y, z)	((void)0)
#define	ASSERT3U(x, y, z)	((void)0)
#define	ASSERT3P(x, y, z)	((void)0)
#else
#define	ASSERT3S(x, y, z)	VERIFY3S(x, y, z)
#define	ASSERT3U(x, y, z)	VERIFY3U(x, y, z)
#define	ASSERT3P(x, y, z)	VERIFY3P(x, y, z)
#endif

/*
 * DTrace SDT probes have different signatures in userland than they do in
 * kernel.  If they're being used in kernel code, re-define them out of
 * existence for their counterparts in libzpool.
 */

#ifdef DTRACE_PROBE
#undef	DTRACE_PROBE
#define	DTRACE_PROBE(a)	((void)0)
#endif	/* DTRACE_PROBE */

#ifdef DTRACE_PROBE1
#undef	DTRACE_PROBE1
#define	DTRACE_PROBE1(a, b, c)	((void)0)
#endif	/* DTRACE_PROBE1 */

#ifdef DTRACE_PROBE2
#undef	DTRACE_PROBE2
#define	DTRACE_PROBE2(a, b, c, d, e)	((void)0)
#endif	/* DTRACE_PROBE2 */

#ifdef DTRACE_PROBE3
#undef	DTRACE_PROBE3
#define	DTRACE_PROBE3(a, b, c, d, e, f, g)	((void)0)
#endif	/* DTRACE_PROBE3 */

#ifdef DTRACE_PROBE4
#undef	DTRACE_PROBE4
#define	DTRACE_PROBE4(a, b, c, d, e, f, g, h, i)	((void)0)
#endif	/* DTRACE_PROBE4 */

/*
 * Threads
 */
#define	TS_MAGIC		0x72f158ab4261e538ull
#define	TS_RUN			0x00000002
#ifdef __linux__
#define	STACK_SIZE		8192	/* Linux x86 and amd64 */
#else
#define	STACK_SIZE		24576	/* Solaris */
#endif

#ifdef NPTL_GUARD_WITHIN_STACK
#define	EXTRA_GUARD_BYTES	PAGESIZE
#else
#define	EXTRA_GUARD_BYTES	0
#endif

/* in libzpool, p0 exists only to have its address taken */
typedef struct proc {
	uintptr_t	this_is_never_used_dont_dereference_it;
} proc_t;

extern struct proc p0;

typedef void (*thread_func_t)(void *);
typedef void (*thread_func_arg_t)(void *);
typedef pthread_t kt_did_t;

typedef struct kthread {
	kt_did_t	t_tid;
	thread_func_t	t_func;
	void *		t_arg;
} kthread_t;

#define	tsd_get(key)			pthread_getspecific(key)
#define	tsd_set(key, val)		pthread_setspecific(key, val)
#define	curthread			zk_thread_current()
#define	thread_exit			zk_thread_exit
#define	thread_create(stk, stksize, func, arg, len, pp, state, pri)	\
	zk_thread_create(stk, stksize, (thread_func_t)func, arg,	\
			 len, NULL, state, pri)
#define	thread_join(t)			zk_thread_join(t)
#define	newproc(f,a,cid,pri,ctp,pid)	(ENOSYS)

extern kthread_t *zk_thread_current(void);
extern void zk_thread_exit(void);
extern kthread_t *zk_thread_create(caddr_t stk, size_t  stksize,
	thread_func_t func, void *arg, size_t len,
	proc_t *pp, int state, pri_t pri);
extern void zk_thread_join(kt_did_t tid);

#define	PS_NONE		-1

#define	issig(why)	(FALSE)
#define	ISSIG(thr, why)	(FALSE)

/*
 * Mutexes
 */
#define	MTX_MAGIC	0x9522f51362a6e326ull
#define	MTX_INIT	((void *)NULL)
#define	MTX_DEST	((void *)-1UL)

typedef struct kmutex {
	void		*m_owner;
	uint64_t	m_magic;
	pthread_mutex_t	m_lock;
} kmutex_t;

#define	MUTEX_DEFAULT	0
#define MUTEX_HELD(m)	((m)->m_owner == curthread)
#define	MUTEX_NOT_HELD(m) (!MUTEX_HELD(m))

extern void mutex_init(kmutex_t *mp, char *name, int type, void *cookie);
extern void mutex_destroy(kmutex_t *mp);
extern void mutex_enter(kmutex_t *mp);
extern void mutex_exit(kmutex_t *mp);
extern int mutex_tryenter(kmutex_t *mp);
extern void *mutex_owner(kmutex_t *mp);
extern int mutex_held(kmutex_t *mp);

/*
 * RW locks
 */
#define	RW_MAGIC	0x4d31fb123648e78aull
#define	RW_INIT		((void *)NULL)
#define	RW_DEST		((void *)-1UL)

typedef struct krwlock {
	void			*rw_owner;
	void			*rw_wr_owner;
	uint64_t		rw_magic;
	pthread_rwlock_t	rw_lock;
	uint_t			rw_readers;
} krwlock_t;

typedef int krw_t;

#define	RW_READER	0
#define	RW_WRITER	1
#define RW_DEFAULT	RW_READER

#define	RW_READ_HELD(x)		((x)->rw_readers > 0)
#define	RW_WRITE_HELD(x)	((x)->rw_wr_owner == curthread)
#define	RW_LOCK_HELD(x)		(RW_READ_HELD(x) || RW_WRITE_HELD(x))

extern void rw_init(krwlock_t *rwlp, char *name, int type, void *arg);
extern void rw_destroy(krwlock_t *rwlp);
extern void rw_enter(krwlock_t *rwlp, krw_t rw);
extern int rw_tryenter(krwlock_t *rwlp, krw_t rw);
extern int rw_tryupgrade(krwlock_t *rwlp);
extern void rw_exit(krwlock_t *rwlp);
#define	rw_downgrade(rwlp) do { } while (0)

extern uid_t crgetuid(cred_t *cr);
extern gid_t crgetgid(cred_t *cr);
extern int crgetngroups(cred_t *cr);
extern gid_t *crgetgroups(cred_t *cr);

/*
 * Condition variables
 */
#define CV_MAGIC	0xd31ea9a83b1b30c4ull

typedef struct kcondvar {
	uint64_t		cv_magic;
	pthread_cond_t		cv;
} kcondvar_t;

#define	CV_DEFAULT	0

extern void cv_init(kcondvar_t *cv, char *name, int type, void *arg);
extern void cv_destroy(kcondvar_t *cv);
extern void cv_wait(kcondvar_t *cv, kmutex_t *mp);
extern clock_t cv_timedwait(kcondvar_t *cv, kmutex_t *mp, clock_t abstime);
extern void cv_signal(kcondvar_t *cv);
extern void cv_broadcast(kcondvar_t *cv);

/*
 * kstat creation, installation and deletion
 */
extern kstat_t *kstat_create(char *, int,
    char *, char *, uchar_t, ulong_t, uchar_t);
extern void kstat_install(kstat_t *);
extern void kstat_delete(kstat_t *);

/*
 * Kernel memory
 */
#define	KM_SLEEP		UMEM_NOFAIL
#define	KM_PUSHPAGE		KM_SLEEP
#define	KM_NOSLEEP		UMEM_DEFAULT
#define	KMC_NODEBUG		UMC_NODEBUG
#define	kmem_alloc(_s, _f)	umem_alloc(_s, _f)
#define	kmem_zalloc(_s, _f)	umem_zalloc(_s, _f)
#define	kmem_free(_b, _s)	umem_free(_b, _s)
#define	kmem_cache_create(_a, _b, _c, _d, _e, _f, _g, _h, _i) \
	umem_cache_create(_a, _b, _c, _d, _e, _f, _g, _h, _i)
#define	kmem_cache_destroy(_c)	umem_cache_destroy(_c)
#define	kmem_cache_alloc(_c, _f) umem_cache_alloc(_c, _f)
#define	kmem_cache_free(_c, _b)	umem_cache_free(_c, _b)
#define	kmem_debugging()	0
#define	kmem_cache_reap_now(_c)		/* nothing */
#define	kmem_cache_set_move(_c, _cb)	/* nothing */
#define	POINTER_INVALIDATE(_pp)		/* nothing */
#define	POINTER_IS_VALID(_p)	0

typedef umem_cache_t kmem_cache_t;

typedef enum kmem_cbrc {
	KMEM_CBRC_YES,
	KMEM_CBRC_NO,
	KMEM_CBRC_LATER,
	KMEM_CBRC_DONT_NEED,
	KMEM_CBRC_DONT_KNOW
} kmem_cbrc_t;

/*
 * Task queues
 */
typedef struct taskq taskq_t;
typedef uintptr_t taskqid_t;
typedef void (task_func_t)(void *);

#define	TASKQ_PREPOPULATE	0x0001
#define	TASKQ_CPR_SAFE		0x0002	/* Use CPR safe protocol */
#define	TASKQ_DYNAMIC		0x0004	/* Use dynamic thread scheduling */
#define	TASKQ_THREADS_CPU_PCT	0x0008	/* Scale # threads by # cpus */
#define	TASKQ_DC_BATCH		0x0010	/* Mark threads as batch */

#define	TQ_SLEEP	KM_SLEEP	/* Can block for memory */
#define	TQ_NOSLEEP	KM_NOSLEEP	/* cannot block for memory; may fail */
#define	TQ_NOQUEUE	0x02		/* Do not enqueue if can't dispatch */
#define	TQ_FRONT	0x08		/* Queue in front */

extern taskq_t *system_taskq;

extern taskq_t	*taskq_create(const char *, int, pri_t, int, int, uint_t);
#define	taskq_create_proc(a, b, c, d, e, p, f) \
	    (taskq_create(a, b, c, d, e, f))
#define	taskq_create_sysdc(a, b, d, e, p, dc, f) \
	    (taskq_create(a, b, maxclsyspri, d, e, f))
extern taskqid_t taskq_dispatch(taskq_t *, task_func_t, void *, uint_t);
extern void	taskq_destroy(taskq_t *);
extern void	taskq_wait(taskq_t *);
extern int	taskq_member(taskq_t *, kthread_t *);
extern void	system_taskq_init(void);
extern void	system_taskq_fini(void);

#define	XVA_MAPSIZE	3
#define	XVA_MAGIC	0x78766174

/*
 * vnodes
 */
typedef struct vnode {
	uint64_t	v_size;
	int		v_fd;
	char		*v_path;
} vnode_t;

#define	AV_SCANSTAMP_SZ	32		/* length of anti-virus scanstamp */

typedef struct xoptattr {
	timestruc_t	xoa_createtime;	/* Create time of file */
	uint8_t		xoa_archive;
	uint8_t		xoa_system;
	uint8_t		xoa_readonly;
	uint8_t		xoa_hidden;
	uint8_t		xoa_nounlink;
	uint8_t		xoa_immutable;
	uint8_t		xoa_appendonly;
	uint8_t		xoa_nodump;
	uint8_t		xoa_settable;
	uint8_t		xoa_opaque;
	uint8_t		xoa_av_quarantined;
	uint8_t		xoa_av_modified;
	uint8_t		xoa_av_scanstamp[AV_SCANSTAMP_SZ];
	uint8_t		xoa_reparse;
	uint8_t		xoa_offline;
	uint8_t		xoa_sparse;
} xoptattr_t;

typedef struct vattr {
	uint_t		va_mask;	/* bit-mask of attributes */
	u_offset_t	va_size;	/* file size in bytes */
} vattr_t;


typedef struct xvattr {
	vattr_t		xva_vattr;	/* Embedded vattr structure */
	uint32_t	xva_magic;	/* Magic Number */
	uint32_t	xva_mapsize;	/* Size of attr bitmap (32-bit words) */
	uint32_t	*xva_rtnattrmapp;	/* Ptr to xva_rtnattrmap[] */
	uint32_t	xva_reqattrmap[XVA_MAPSIZE];	/* Requested attrs */
	uint32_t	xva_rtnattrmap[XVA_MAPSIZE];	/* Returned attrs */
	xoptattr_t	xva_xoptattrs;	/* Optional attributes */
} xvattr_t;

typedef struct vsecattr {
	uint_t		vsa_mask;	/* See below */
	int		vsa_aclcnt;	/* ACL entry count */
	void		*vsa_aclentp;	/* pointer to ACL entries */
	int		vsa_dfaclcnt;	/* default ACL entry count */
	void		*vsa_dfaclentp;	/* pointer to default ACL entries */
	size_t		vsa_aclentsz;	/* ACE size in bytes of vsa_aclentp */
} vsecattr_t;

#define	AT_TYPE		0x00001
#define	AT_MODE		0x00002
#define	AT_UID		0x00004
#define	AT_GID		0x00008
#define	AT_FSID		0x00010
#define	AT_NODEID	0x00020
#define	AT_NLINK	0x00040
#define	AT_SIZE		0x00080
#define	AT_ATIME	0x00100
#define	AT_MTIME	0x00200
#define	AT_CTIME	0x00400
#define	AT_RDEV		0x00800
#define	AT_BLKSIZE	0x01000
#define	AT_NBLOCKS	0x02000
#define	AT_SEQ		0x08000
#define	AT_XVATTR	0x10000

#define	CRCREAT		0

extern int fop_getattr(vnode_t *vp, vattr_t *vap);

#define	VOP_CLOSE(vp, f, c, o, cr, ct)	0
#define	VOP_PUTPAGE(vp, of, sz, fl, cr, ct)	0
#define	VOP_GETATTR(vp, vap, fl, cr, ct)  fop_getattr((vp), (vap));

#define	VOP_FSYNC(vp, f, cr, ct)	fsync((vp)->v_fd)

#define	VN_RELE(vp)	vn_close(vp)

extern int vn_open(char *path, int x1, int oflags, int mode, vnode_t **vpp,
    int x2, int x3);
extern int vn_openat(char *path, int x1, int oflags, int mode, vnode_t **vpp,
    int x2, int x3, vnode_t *vp, int fd);
extern int vn_rdwr(int uio, vnode_t *vp, void *addr, ssize_t len,
    offset_t offset, int x1, int x2, rlim64_t x3, void *x4, ssize_t *residp);
extern void vn_close(vnode_t *vp);

#define	vn_remove(path, x1, x2)		remove(path)
#define	vn_rename(from, to, seg)	rename((from), (to))
#define	vn_is_readonly(vp)		B_FALSE

extern vnode_t *rootdir;

#include <sys/file.h>		/* for FREAD, FWRITE, etc */

/*
 * Random stuff
 */
#define	ddi_get_lbolt()		(gethrtime() >> 23)
#define	ddi_get_lbolt64()	(gethrtime() >> 23)
#define	hz	119	/* frequency when using gethrtime() >> 23 for lbolt */

extern void delay(clock_t ticks);

#define	gethrestime_sec() time(NULL)
#define	gethrestime(t) \
	do {\
		(t)->tv_sec = gethrestime_sec();\
		(t)->tv_nsec = 0;\
	} while (0);

#define	max_ncpus	64

#define	minclsyspri	60
#define	maxclsyspri	99

#define	CPU_SEQID	(pthread_self() & (max_ncpus - 1))

#define	kcred		NULL
#define	CRED()		NULL

#define	ptob(x)		((x) * PAGESIZE)

extern uint64_t physmem;

extern int highbit(ulong_t i);
extern int random_get_bytes(uint8_t *ptr, size_t len);
extern int random_get_pseudo_bytes(uint8_t *ptr, size_t len);

extern void kernel_init(int);
extern void kernel_fini(void);

struct spa;
extern void nicenum(uint64_t num, char *buf);
extern void show_pool_stats(struct spa *);

typedef struct callb_cpr {
	kmutex_t	*cc_lockp;
} callb_cpr_t;

#define	CALLB_CPR_INIT(cp, lockp, func, name)	{		\
	(cp)->cc_lockp = lockp;					\
}

#define	CALLB_CPR_SAFE_BEGIN(cp) {				\
	ASSERT(MUTEX_HELD((cp)->cc_lockp));			\
}

#define	CALLB_CPR_SAFE_END(cp, lockp) {				\
	ASSERT(MUTEX_HELD((cp)->cc_lockp));			\
}

#define	CALLB_CPR_EXIT(cp) {					\
	ASSERT(MUTEX_HELD((cp)->cc_lockp));			\
	mutex_exit((cp)->cc_lockp);				\
}

#define	zone_dataset_visible(x, y)	(1)
#define	INGLOBALZONE(z)			(1)

extern char *kmem_asprintf(const char *fmt, ...);
#define	strfree(str) kmem_free((str), strlen(str)+1)

/*
 * Hostname information
 */
extern char hw_serial[];	/* for userland-emulated hostid access */
extern int ddi_strtoul(const char *str, char **nptr, int base,
    unsigned long *result);

extern int ddi_strtoull(const char *str, char **nptr, int base,
    u_longlong_t *result);

/* ZFS Boot Related stuff. */

struct _buf {
	intptr_t	_fd;
};

struct bootstat {
	uint64_t st_size;
};

typedef struct ace_object {
	uid_t		a_who;
	uint32_t	a_access_mask;
	uint16_t	a_flags;
	uint16_t	a_type;
	uint8_t		a_obj_type[16];
	uint8_t		a_inherit_obj_type[16];
} ace_object_t;


#define	ACE_ACCESS_ALLOWED_OBJECT_ACE_TYPE	0x05
#define	ACE_ACCESS_DENIED_OBJECT_ACE_TYPE	0x06
#define	ACE_SYSTEM_AUDIT_OBJECT_ACE_TYPE	0x07
#define	ACE_SYSTEM_ALARM_OBJECT_ACE_TYPE	0x08

extern struct _buf *kobj_open_file(char *name);
extern int kobj_read_file(struct _buf *file, char *buf, unsigned size,
    unsigned off);
extern void kobj_close_file(struct _buf *file);
extern int kobj_get_filesize(struct _buf *file, uint64_t *size);
extern int zfs_secpolicy_snapshot_perms(const char *name, cred_t *cr);
extern int zfs_secpolicy_rename_perms(const char *from, const char *to,
    cred_t *cr);
extern int zfs_secpolicy_destroy_perms(const char *name, cred_t *cr);
extern zoneid_t getzoneid(void);

/* SID stuff */
typedef struct ksiddomain {
	uint_t	kd_ref;
	uint_t	kd_len;
	char	*kd_name;
} ksiddomain_t;

ksiddomain_t *ksid_lookupdomain(const char *);
void ksiddomain_rele(ksiddomain_t *);

#define	DDI_SLEEP	KM_SLEEP
#define	ddi_log_sysevent(_a, _b, _c, _d, _e, _f, _g) \
	sysevent_post_event(_c, _d, _b, "libzpool", _e, _f)

#ifdef	__cplusplus
}
#endif

#endif	/* _SYS_ZFS_CONTEXT_H */
Commit	Line	Data
77755a57 BB	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	/*
572e2857	22	* Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
77755a57 BB	23	*/
	24
	25	#ifndef _SYS_ZFS_CONTEXT_H
	26	#define _SYS_ZFS_CONTEXT_H
	27
	28	#ifdef __cplusplus
	29	extern "C" {
	30	#endif
	31
	32	#define _SYS_MUTEX_H
	33	#define _SYS_RWLOCK_H
	34	#define _SYS_CONDVAR_H
	35	#define _SYS_SYSTM_H
	36	#define _SYS_DEBUG_H
	37	#define _SYS_T_LOCK_H
	38	#define _SYS_VNODE_H
	39	#define _SYS_VFS_H
	40	#define _SYS_SUNDDI_H
	41	#define _SYS_CALLB_H
	42
	43	#include <stdio.h>
	44	#include <stdlib.h>
	45	#include <stddef.h>
	46	#include <stdarg.h>
	47	#include <fcntl.h>
	48	#include <unistd.h>
	49	#include <errno.h>
	50	#include <string.h>
	51	#include <strings.h>
1e33ac1e	52	#include <pthread.h>
77755a57 BB	53	#include <assert.h>
	54	#include <alloca.h>
	55	#include <umem.h>
	56	#include <limits.h>
	57	#include <atomic.h>
	58	#include <dirent.h>
	59	#include <time.h>
9babb374	60	#include <libsysevent.h>
77755a57 BB	61	#include <sys/note.h>
	62	#include <sys/types.h>
	63	#include <sys/cred.h>
	64	#include <sys/sysmacros.h>
	65	#include <sys/bitmap.h>
	66	#include <sys/resource.h>
	67	#include <sys/byteorder.h>
	68	#include <sys/list.h>
	69	#include <sys/uio.h>
	70	#include <sys/zfs_debug.h>
	71	#include <sys/sdt.h>
	72	#include <sys/kstat.h>
	73	#include <sys/u8_textprep.h>
	74	#include <sys/sysevent/eventdefs.h>
9babb374	75	#include <sys/sysevent/dev.h>
428870ff	76	#include <sys/sunddi.h>
77755a57	77
60948de1 BB	78	/*
	79	* Stack
	80	*/
	81
	82	#define noinline __attribute__((noinline))
	83
77755a57 BB	84	/*
	85	* Debugging
	86	*/
	87
	88	/*
	89	* Note that we are not using the debugging levels.
	90	*/
	91
	92	#define CE_CONT 0 /* continuation */
	93	#define CE_NOTE 1 /* notice */
	94	#define CE_WARN 2 /* warning */
	95	#define CE_PANIC 3 /* panic */
	96	#define CE_IGNORE 4 /* print nothing */
	97
1e33ac1e BB	98	extern int aok;
1e33ac1e BB	99
77755a57 BB	100	/*
	101	* ZFS debugging
	102	*/
	103
	104	#ifdef ZFS_DEBUG
	105	extern void dprintf_setup(int argc, char *argv);
	106	#endif /* ZFS_DEBUG */
	107
	108	extern void cmn_err(int, const char *, ...);
	109	extern void vcmn_err(int, const char *, __va_list);
	110	extern void panic(const char *, ...);
	111	extern void vpanic(const char *, __va_list);
	112
	113	#define fm_panic panic
	114
428870ff BB	115	extern int aok;
428870ff BB	116
77755a57 BB	117	/* This definition is copied from assert.h. */
	118	#if defined(__STDC__)
	119	#if __STDC_VERSION__ - 0 >= 199901L
428870ff	120	#define zverify(EX) (void)((EX) \|\| (aok) \|\| \
77755a57 BB	121	(__assert_c99(#EX, __FILE__, __LINE__, __func__), 0))
77755a57 BB	122	#else
428870ff BB	123	#define zverify(EX) (void)((EX) \|\| (aok) \|\| \
428870ff BB	124	(__assert(#EX, __FILE__, __LINE__), 0))
77755a57 BB	125	#endif /* __STDC_VERSION__ - 0 >= 199901L */
77755a57 BB	126	#else
428870ff BB	127	#define zverify(EX) (void)((EX) \|\| (aok) \|\| \
428870ff BB	128	(_assert("EX", __FILE__, __LINE__), 0))
77755a57 BB	129	#endif /* __STDC__ */
	130
	131
428870ff BB	132	#define VERIFY zverify
	133	#define ASSERT zverify
	134	#undef assert
	135	#define assert zverify
77755a57 BB	136
	137	extern void __assert(const char , const char , int);
	138
	139	#ifdef lint
	140	#define VERIFY3_IMPL(x, y, z, t) if (x == z) ((void)0)
	141	#else
	142	/* BEGIN CSTYLED */
	143	#define VERIFY3_IMPL(LEFT, OP, RIGHT, TYPE) do { \
	144	const TYPE __left = (TYPE)(LEFT); \
	145	const TYPE __right = (TYPE)(RIGHT); \
428870ff	146	if (!(__left OP __right) && (!aok)) { \
77755a57 BB	147	char *__buf = alloca(256); \
	148	(void) snprintf(__buf, 256, "%s %s %s (0x%llx %s 0x%llx)", \
	149	#LEFT, #OP, #RIGHT, \
	150	(u_longlong_t)__left, #OP, (u_longlong_t)__right); \
	151	__assert(__buf, __FILE__, __LINE__); \
	152	} \
	153	_NOTE(CONSTCOND) } while (0)
	154	/* END CSTYLED */
	155	#endif /* lint */
	156
	157	#define VERIFY3S(x, y, z) VERIFY3_IMPL(x, y, z, int64_t)
	158	#define VERIFY3U(x, y, z) VERIFY3_IMPL(x, y, z, uint64_t)
	159	#define VERIFY3P(x, y, z) VERIFY3_IMPL(x, y, z, uintptr_t)
	160
	161	#ifdef NDEBUG
	162	#define ASSERT3S(x, y, z) ((void)0)
	163	#define ASSERT3U(x, y, z) ((void)0)
	164	#define ASSERT3P(x, y, z) ((void)0)
	165	#else
	166	#define ASSERT3S(x, y, z) VERIFY3S(x, y, z)
	167	#define ASSERT3U(x, y, z) VERIFY3U(x, y, z)
	168	#define ASSERT3P(x, y, z) VERIFY3P(x, y, z)
	169	#endif
	170
	171	/*
	172	* DTrace SDT probes have different signatures in userland than they do in
	173	* kernel. If they're being used in kernel code, re-define them out of
	174	* existence for their counterparts in libzpool.
	175	*/
	176
	177	#ifdef DTRACE_PROBE
	178	#undef DTRACE_PROBE
	179	#define DTRACE_PROBE(a) ((void)0)
	180	#endif /* DTRACE_PROBE */
	181
	182	#ifdef DTRACE_PROBE1
	183	#undef DTRACE_PROBE1
	184	#define DTRACE_PROBE1(a, b, c) ((void)0)
	185	#endif /* DTRACE_PROBE1 */
	186
	187	#ifdef DTRACE_PROBE2
	188	#undef DTRACE_PROBE2
	189	#define DTRACE_PROBE2(a, b, c, d, e) ((void)0)
	190	#endif /* DTRACE_PROBE2 */
	191
	192	#ifdef DTRACE_PROBE3
	193	#undef DTRACE_PROBE3
	194	#define DTRACE_PROBE3(a, b, c, d, e, f, g) ((void)0)
	195	#endif /* DTRACE_PROBE3 */
	196
	197	#ifdef DTRACE_PROBE4
	198	#undef DTRACE_PROBE4
	199	#define DTRACE_PROBE4(a, b, c, d, e, f, g, h, i) ((void)0)
	200	#endif /* DTRACE_PROBE4 */
	201
	202	/*
	203	* Threads
	204	*/
1e33ac1e BB	205	#define TS_MAGIC 0x72f158ab4261e538ull
	206	#define TS_RUN 0x00000002
	207	#ifdef __linux__
	208	#define STACK_SIZE 8192 /* Linux x86 and amd64 */
	209	#else
	210	#define STACK_SIZE 24576 /* Solaris */
	211	#endif
428870ff	212
1e33ac1e BB	213	#ifdef NPTL_GUARD_WITHIN_STACK
	214	#define EXTRA_GUARD_BYTES PAGESIZE
	215	#else
	216	#define EXTRA_GUARD_BYTES 0
	217	#endif
428870ff BB	218
428870ff BB	219	/* in libzpool, p0 exists only to have its address taken */
1e33ac1e	220	typedef struct proc {
428870ff	221	uintptr_t this_is_never_used_dont_dereference_it;
1e33ac1e	222	} proc_t;
428870ff BB	223
	224	extern struct proc p0;
	225
1e33ac1e BB	226	typedef void (thread_func_t)(void );
	227	typedef void (thread_func_arg_t)(void );
	228	typedef pthread_t kt_did_t;
	229
	230	typedef struct kthread {
	231	kt_did_t t_tid;
	232	thread_func_t t_func;
	233	void * t_arg;
	234	} kthread_t;
77755a57	235
1e33ac1e BB	236	#define tsd_get(key) pthread_getspecific(key)
	237	#define tsd_set(key, val) pthread_setspecific(key, val)
	238	#define curthread zk_thread_current()
	239	#define thread_exit zk_thread_exit
	240	#define thread_create(stk, stksize, func, arg, len, pp, state, pri) \
	241	zk_thread_create(stk, stksize, (thread_func_t)func, arg, \
	242	len, NULL, state, pri)
	243	#define thread_join(t) zk_thread_join(t)
	244	#define newproc(f,a,cid,pri,ctp,pid) (ENOSYS)
	245
	246	extern kthread_t *zk_thread_current(void);
	247	extern void zk_thread_exit(void);
	248	extern kthread_t *zk_thread_create(caddr_t stk, size_t stksize,
	249	thread_func_t func, void *arg, size_t len,
	250	proc_t *pp, int state, pri_t pri);
	251	extern void zk_thread_join(kt_did_t tid);
	252
	253	#define PS_NONE -1
77755a57 BB	254
	255	#define issig(why) (FALSE)
	256	#define ISSIG(thr, why) (FALSE)
	257
	258	/*
	259	* Mutexes
	260	*/
1e33ac1e BB	261	#define MTX_MAGIC 0x9522f51362a6e326ull
	262	#define MTX_INIT ((void *)NULL)
	263	#define MTX_DEST ((void *)-1UL)
	264
77755a57 BB	265	typedef struct kmutex {
77755a57 BB	266	void *m_owner;
1e33ac1e BB	267	uint64_t m_magic;
1e33ac1e BB	268	pthread_mutex_t m_lock;
77755a57 BB	269	} kmutex_t;
77755a57 BB	270
1e33ac1e BB	271	#define MUTEX_DEFAULT 0
1e33ac1e BB	272	#define MUTEX_HELD(m) ((m)->m_owner == curthread)
572e2857	273	#define MUTEX_NOT_HELD(m) (!MUTEX_HELD(m))
77755a57	274
1e33ac1e BB	275	extern void mutex_init(kmutex_t mp, char name, int type, void *cookie);
1e33ac1e BB	276	extern void mutex_destroy(kmutex_t *mp);
77755a57 BB	277	extern void mutex_enter(kmutex_t *mp);
	278	extern void mutex_exit(kmutex_t *mp);
	279	extern int mutex_tryenter(kmutex_t *mp);
	280	extern void mutex_owner(kmutex_t mp);
1e33ac1e	281	extern int mutex_held(kmutex_t *mp);
77755a57 BB	282
	283	/*
	284	* RW locks
	285	*/
1e33ac1e BB	286	#define RW_MAGIC 0x4d31fb123648e78aull
	287	#define RW_INIT ((void *)NULL)
	288	#define RW_DEST ((void *)-1UL)
	289
77755a57	290	typedef struct krwlock {
1e33ac1e BB	291	void *rw_owner;
	292	void *rw_wr_owner;
	293	uint64_t rw_magic;
	294	pthread_rwlock_t rw_lock;
	295	uint_t rw_readers;
77755a57 BB	296	} krwlock_t;
	297
	298	typedef int krw_t;
	299
	300	#define RW_READER 0
	301	#define RW_WRITER 1
1e33ac1e	302	#define RW_DEFAULT RW_READER
77755a57	303
1e33ac1e BB	304	#define RW_READ_HELD(x) ((x)->rw_readers > 0)
	305	#define RW_WRITE_HELD(x) ((x)->rw_wr_owner == curthread)
	306	#define RW_LOCK_HELD(x) (RW_READ_HELD(x) \|\| RW_WRITE_HELD(x))
77755a57 BB	307
	308	extern void rw_init(krwlock_t rwlp, char name, int type, void *arg);
	309	extern void rw_destroy(krwlock_t *rwlp);
	310	extern void rw_enter(krwlock_t *rwlp, krw_t rw);
	311	extern int rw_tryenter(krwlock_t *rwlp, krw_t rw);
	312	extern int rw_tryupgrade(krwlock_t *rwlp);
	313	extern void rw_exit(krwlock_t *rwlp);
	314	#define rw_downgrade(rwlp) do { } while (0)
	315
	316	extern uid_t crgetuid(cred_t *cr);
	317	extern gid_t crgetgid(cred_t *cr);
	318	extern int crgetngroups(cred_t *cr);
	319	extern gid_t crgetgroups(cred_t cr);
	320
	321	/*
	322	* Condition variables
	323	*/
1e33ac1e BB	324	#define CV_MAGIC 0xd31ea9a83b1b30c4ull
	325
	326	typedef struct kcondvar {
	327	uint64_t cv_magic;
	328	pthread_cond_t cv;
	329	} kcondvar_t;
77755a57	330
1e33ac1e	331	#define CV_DEFAULT 0
77755a57 BB	332
	333	extern void cv_init(kcondvar_t cv, char name, int type, void *arg);
	334	extern void cv_destroy(kcondvar_t *cv);
	335	extern void cv_wait(kcondvar_t cv, kmutex_t mp);
	336	extern clock_t cv_timedwait(kcondvar_t cv, kmutex_t mp, clock_t abstime);
	337	extern void cv_signal(kcondvar_t *cv);
	338	extern void cv_broadcast(kcondvar_t *cv);
	339
	340	/*
	341	* kstat creation, installation and deletion
	342	*/
	343	extern kstat_t kstat_create(char , int,
	344	char , char , uchar_t, ulong_t, uchar_t);
	345	extern void kstat_install(kstat_t *);
	346	extern void kstat_delete(kstat_t *);
	347
	348	/*
	349	* Kernel memory
	350	*/
	351	#define KM_SLEEP UMEM_NOFAIL
	352	#define KM_PUSHPAGE KM_SLEEP
	353	#define KM_NOSLEEP UMEM_DEFAULT
	354	#define KMC_NODEBUG UMC_NODEBUG
	355	#define kmem_alloc(_s, _f) umem_alloc(_s, _f)
	356	#define kmem_zalloc(_s, _f) umem_zalloc(_s, _f)
	357	#define kmem_free(_b, _s) umem_free(_b, _s)
	358	#define kmem_cache_create(_a, _b, _c, _d, _e, _f, _g, _h, _i) \
	359	umem_cache_create(_a, _b, _c, _d, _e, _f, _g, _h, _i)
	360	#define kmem_cache_destroy(_c) umem_cache_destroy(_c)
	361	#define kmem_cache_alloc(_c, _f) umem_cache_alloc(_c, _f)
	362	#define kmem_cache_free(_c, _b) umem_cache_free(_c, _b)
	363	#define kmem_debugging() 0
572e2857 BB	364	#define kmem_cache_reap_now(_c) /* nothing */
	365	#define kmem_cache_set_move(_c, _cb) /* nothing */
	366	#define POINTER_INVALIDATE(_pp) /* nothing */
	367	#define POINTER_IS_VALID(_p) 0
77755a57 BB	368
	369	typedef umem_cache_t kmem_cache_t;
	370
572e2857 BB	371	typedef enum kmem_cbrc {
	372	KMEM_CBRC_YES,
	373	KMEM_CBRC_NO,
	374	KMEM_CBRC_LATER,
	375	KMEM_CBRC_DONT_NEED,
	376	KMEM_CBRC_DONT_KNOW
	377	} kmem_cbrc_t;
	378
77755a57 BB	379	/*
	380	* Task queues
	381	*/
	382	typedef struct taskq taskq_t;
	383	typedef uintptr_t taskqid_t;
	384	typedef void (task_func_t)(void *);
	385
	386	#define TASKQ_PREPOPULATE 0x0001
	387	#define TASKQ_CPR_SAFE 0x0002 /* Use CPR safe protocol */
	388	#define TASKQ_DYNAMIC 0x0004 /* Use dynamic thread scheduling */
428870ff BB	389	#define TASKQ_THREADS_CPU_PCT 0x0008 /* Scale # threads by # cpus */
428870ff BB	390	#define TASKQ_DC_BATCH 0x0010 /* Mark threads as batch */
77755a57 BB	391
	392	#define TQ_SLEEP KM_SLEEP /* Can block for memory */
	393	#define TQ_NOSLEEP KM_NOSLEEP /* cannot block for memory; may fail */
428870ff BB	394	#define TQ_NOQUEUE 0x02 /* Do not enqueue if can't dispatch */
428870ff BB	395	#define TQ_FRONT 0x08 /* Queue in front */
77755a57 BB	396
	397	extern taskq_t *system_taskq;
	398
	399	extern taskq_t taskq_create(const char , int, pri_t, int, int, uint_t);
428870ff BB	400	#define taskq_create_proc(a, b, c, d, e, p, f) \
	401	(taskq_create(a, b, c, d, e, f))
	402	#define taskq_create_sysdc(a, b, d, e, p, dc, f) \
	403	(taskq_create(a, b, maxclsyspri, d, e, f))
77755a57 BB	404	extern taskqid_t taskq_dispatch(taskq_t , task_func_t, void , uint_t);
	405	extern void taskq_destroy(taskq_t *);
	406	extern void taskq_wait(taskq_t *);
1e33ac1e	407	extern int taskq_member(taskq_t , kthread_t );
77755a57	408	extern void system_taskq_init(void);
428870ff	409	extern void system_taskq_fini(void);
77755a57 BB	410
	411	#define XVA_MAPSIZE 3
	412	#define XVA_MAGIC 0x78766174
	413
	414	/*
	415	* vnodes
	416	*/
	417	typedef struct vnode {
	418	uint64_t v_size;
	419	int v_fd;
	420	char *v_path;
	421	} vnode_t;
	422
428870ff	423	#define AV_SCANSTAMP_SZ 32 /* length of anti-virus scanstamp */
77755a57 BB	424
	425	typedef struct xoptattr {
	426	timestruc_t xoa_createtime; /* Create time of file */
	427	uint8_t xoa_archive;
	428	uint8_t xoa_system;
	429	uint8_t xoa_readonly;
	430	uint8_t xoa_hidden;
	431	uint8_t xoa_nounlink;
	432	uint8_t xoa_immutable;
	433	uint8_t xoa_appendonly;
	434	uint8_t xoa_nodump;
	435	uint8_t xoa_settable;
	436	uint8_t xoa_opaque;
	437	uint8_t xoa_av_quarantined;
	438	uint8_t xoa_av_modified;
428870ff BB	439	uint8_t xoa_av_scanstamp[AV_SCANSTAMP_SZ];
428870ff BB	440	uint8_t xoa_reparse;
572e2857 BB	441	uint8_t xoa_offline;
572e2857 BB	442	uint8_t xoa_sparse;
77755a57 BB	443	} xoptattr_t;
	444
	445	typedef struct vattr {
	446	uint_t va_mask; /* bit-mask of attributes */
	447	u_offset_t va_size; /* file size in bytes */
	448	} vattr_t;
	449
	450
	451	typedef struct xvattr {
	452	vattr_t xva_vattr; /* Embedded vattr structure */
	453	uint32_t xva_magic; /* Magic Number */
	454	uint32_t xva_mapsize; /* Size of attr bitmap (32-bit words) */
	455	uint32_t xva_rtnattrmapp; / Ptr to xva_rtnattrmap[] */
	456	uint32_t xva_reqattrmap[XVA_MAPSIZE]; /* Requested attrs */
	457	uint32_t xva_rtnattrmap[XVA_MAPSIZE]; /* Returned attrs */
	458	xoptattr_t xva_xoptattrs; /* Optional attributes */
	459	} xvattr_t;
	460
	461	typedef struct vsecattr {
	462	uint_t vsa_mask; /* See below */
	463	int vsa_aclcnt; /* ACL entry count */
	464	void vsa_aclentp; / pointer to ACL entries */
	465	int vsa_dfaclcnt; /* default ACL entry count */
	466	void vsa_dfaclentp; / pointer to default ACL entries */
	467	size_t vsa_aclentsz; /* ACE size in bytes of vsa_aclentp */
	468	} vsecattr_t;
	469
	470	#define AT_TYPE 0x00001
	471	#define AT_MODE 0x00002
	472	#define AT_UID 0x00004
	473	#define AT_GID 0x00008
	474	#define AT_FSID 0x00010
	475	#define AT_NODEID 0x00020
	476	#define AT_NLINK 0x00040
	477	#define AT_SIZE 0x00080
	478	#define AT_ATIME 0x00100
	479	#define AT_MTIME 0x00200
	480	#define AT_CTIME 0x00400
	481	#define AT_RDEV 0x00800
	482	#define AT_BLKSIZE 0x01000
	483	#define AT_NBLOCKS 0x02000
	484	#define AT_SEQ 0x08000
	485	#define AT_XVATTR 0x10000
	486
	487	#define CRCREAT 0
	488
428870ff BB	489	extern int fop_getattr(vnode_t vp, vattr_t vap);
428870ff BB	490
77755a57 BB	491	#define VOP_CLOSE(vp, f, c, o, cr, ct) 0
77755a57 BB	492	#define VOP_PUTPAGE(vp, of, sz, fl, cr, ct) 0
428870ff	493	#define VOP_GETATTR(vp, vap, fl, cr, ct) fop_getattr((vp), (vap));
77755a57 BB	494
	495	#define VOP_FSYNC(vp, f, cr, ct) fsync((vp)->v_fd)
	496
	497	#define VN_RELE(vp) vn_close(vp)
	498
	499	extern int vn_open(char path, int x1, int oflags, int mode, vnode_t *vpp,
	500	int x2, int x3);
	501	extern int vn_openat(char path, int x1, int oflags, int mode, vnode_t *vpp,
	502	int x2, int x3, vnode_t *vp, int fd);
	503	extern int vn_rdwr(int uio, vnode_t vp, void addr, ssize_t len,
	504	offset_t offset, int x1, int x2, rlim64_t x3, void x4, ssize_t residp);
	505	extern void vn_close(vnode_t *vp);
	506
	507	#define vn_remove(path, x1, x2) remove(path)
	508	#define vn_rename(from, to, seg) rename((from), (to))
	509	#define vn_is_readonly(vp) B_FALSE
	510
	511	extern vnode_t *rootdir;
	512
	513	#include <sys/file.h> /* for FREAD, FWRITE, etc */
	514
	515	/*
	516	* Random stuff
	517	*/
428870ff BB	518	#define ddi_get_lbolt() (gethrtime() >> 23)
428870ff BB	519	#define ddi_get_lbolt64() (gethrtime() >> 23)
77755a57 BB	520	#define hz 119 /* frequency when using gethrtime() >> 23 for lbolt */
	521
	522	extern void delay(clock_t ticks);
	523
	524	#define gethrestime_sec() time(NULL)
428870ff BB	525	#define gethrestime(t) \
	526	do {\
	527	(t)->tv_sec = gethrestime_sec();\
	528	(t)->tv_nsec = 0;\
	529	} while (0);
77755a57 BB	530
	531	#define max_ncpus 64
	532
	533	#define minclsyspri 60
	534	#define maxclsyspri 99
	535
1e33ac1e	536	#define CPU_SEQID (pthread_self() & (max_ncpus - 1))
77755a57 BB	537
	538	#define kcred NULL
	539	#define CRED() NULL
	540
	541	#define ptob(x) ((x) * PAGESIZE)
	542
	543	extern uint64_t physmem;
	544
	545	extern int highbit(ulong_t i);
	546	extern int random_get_bytes(uint8_t *ptr, size_t len);
	547	extern int random_get_pseudo_bytes(uint8_t *ptr, size_t len);
	548
	549	extern void kernel_init(int);
	550	extern void kernel_fini(void);
	551
	552	struct spa;
	553	extern void nicenum(uint64_t num, char *buf);
	554	extern void show_pool_stats(struct spa *);
	555
	556	typedef struct callb_cpr {
	557	kmutex_t *cc_lockp;
	558	} callb_cpr_t;
	559
	560	#define CALLB_CPR_INIT(cp, lockp, func, name) { \
	561	(cp)->cc_lockp = lockp; \
	562	}
	563
	564	#define CALLB_CPR_SAFE_BEGIN(cp) { \
	565	ASSERT(MUTEX_HELD((cp)->cc_lockp)); \
	566	}
	567
	568	#define CALLB_CPR_SAFE_END(cp, lockp) { \
	569	ASSERT(MUTEX_HELD((cp)->cc_lockp)); \
	570	}
	571
	572	#define CALLB_CPR_EXIT(cp) { \
	573	ASSERT(MUTEX_HELD((cp)->cc_lockp)); \
	574	mutex_exit((cp)->cc_lockp); \
	575	}
	576
	577	#define zone_dataset_visible(x, y) (1)
	578	#define INGLOBALZONE(z) (1)
	579
428870ff BB	580	extern char kmem_asprintf(const char fmt, ...);
	581	#define strfree(str) kmem_free((str), strlen(str)+1)
	582
77755a57 BB	583	/*
	584	* Hostname information
	585	*/
d164b209	586	extern char hw_serial[]; /* for userland-emulated hostid access */
77755a57 BB	587	extern int ddi_strtoul(const char str, char *nptr, int base,
	588	unsigned long *result);
	589
428870ff BB	590	extern int ddi_strtoull(const char str, char *nptr, int base,
	591	u_longlong_t *result);
	592
77755a57 BB	593	/* ZFS Boot Related stuff. */
	594
	595	struct _buf {
	596	intptr_t _fd;
	597	};
	598
	599	struct bootstat {
	600	uint64_t st_size;
	601	};
	602
	603	typedef struct ace_object {
	604	uid_t a_who;
	605	uint32_t a_access_mask;
	606	uint16_t a_flags;
	607	uint16_t a_type;
	608	uint8_t a_obj_type[16];
	609	uint8_t a_inherit_obj_type[16];
	610	} ace_object_t;
	611
	612
	613	#define ACE_ACCESS_ALLOWED_OBJECT_ACE_TYPE 0x05
	614	#define ACE_ACCESS_DENIED_OBJECT_ACE_TYPE 0x06
	615	#define ACE_SYSTEM_AUDIT_OBJECT_ACE_TYPE 0x07
	616	#define ACE_SYSTEM_ALARM_OBJECT_ACE_TYPE 0x08
	617
	618	extern struct _buf kobj_open_file(char name);
	619	extern int kobj_read_file(struct _buf file, char buf, unsigned size,
	620	unsigned off);
	621	extern void kobj_close_file(struct _buf *file);
	622	extern int kobj_get_filesize(struct _buf file, uint64_t size);
	623	extern int zfs_secpolicy_snapshot_perms(const char name, cred_t cr);
	624	extern int zfs_secpolicy_rename_perms(const char from, const char to,
	625	cred_t *cr);
	626	extern int zfs_secpolicy_destroy_perms(const char name, cred_t cr);
	627	extern zoneid_t getzoneid(void);
	628
	629	/* SID stuff */
	630	typedef struct ksiddomain {
	631	uint_t kd_ref;
	632	uint_t kd_len;
	633	char *kd_name;
	634	} ksiddomain_t;
	635
	636	ksiddomain_t ksid_lookupdomain(const char );
	637	void ksiddomain_rele(ksiddomain_t *);
	638
9babb374 BB	639	#define DDI_SLEEP KM_SLEEP
	640	#define ddi_log_sysevent(_a, _b, _c, _d, _e, _f, _g) \
	641	sysevent_post_event(_c, _d, _b, "libzpool", _e, _f)
	642
77755a57 BB	643	#ifdef __cplusplus
	644	}
	645	#endif
	646
	647	#endif /* _SYS_ZFS_CONTEXT_H */