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	Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz> Closes #13434
		
			
				
	
	
		
			778 lines
		
	
	
		
			21 KiB
		
	
	
	
		
			C
		
	
	
	
	
	
			
		
		
	
	
			778 lines
		
	
	
		
			21 KiB
		
	
	
	
		
			C
		
	
	
	
	
	
/*
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 * CDDL HEADER START
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 *
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 * The contents of this file are subject to the terms of the
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 * Common Development and Distribution License (the "License").
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 * You may not use this file except in compliance with the License.
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 *
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 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
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 * or http://www.opensolaris.org/os/licensing.
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 * See the License for the specific language governing permissions
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 * and limitations under the License.
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 *
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 * When distributing Covered Code, include this CDDL HEADER in each
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 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
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 * If applicable, add the following below this CDDL HEADER, with the
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 * fields enclosed by brackets "[]" replaced with your own identifying
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 * information: Portions Copyright [yyyy] [name of copyright owner]
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 *
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 * CDDL HEADER END
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 */
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/*
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 * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
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 * Copyright 2011 Nexenta Systems, Inc.  All rights reserved.
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 * Copyright (c) 2012, 2018 by Delphix. All rights reserved.
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 * Copyright (c) 2012, Joyent, Inc. All rights reserved.
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 */
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#ifndef _SYS_ZFS_CONTEXT_H
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#define	_SYS_ZFS_CONTEXT_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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/*
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 * This code compiles in three different contexts. When __KERNEL__ is defined,
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 * the code uses "unix-like" kernel interfaces. When _STANDALONE is defined, the
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 * code is running in a reduced capacity environment of the boot loader which is
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 * generally a subset of both POSIX and kernel interfaces (with a few unique
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 * interfaces too). When neither are defined, it's in a userland POSIX or
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 * similar environment.
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 */
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#if defined(__KERNEL__) || defined(_STANDALONE)
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#include <sys/types.h>
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#include <sys/atomic.h>
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#include <sys/sysmacros.h>
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#include <sys/vmsystm.h>
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#include <sys/condvar.h>
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#include <sys/cmn_err.h>
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#include <sys/kmem.h>
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#include <sys/kmem_cache.h>
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#include <sys/vmem.h>
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#include <sys/taskq.h>
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#include <sys/param.h>
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#include <sys/disp.h>
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#include <sys/debug.h>
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#include <sys/random.h>
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#include <sys/string.h>
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#include <sys/byteorder.h>
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#include <sys/list.h>
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#include <sys/time.h>
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#include <sys/zone.h>
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#include <sys/kstat.h>
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#include <sys/zfs_debug.h>
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#include <sys/sysevent.h>
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#include <sys/sysevent/eventdefs.h>
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#include <sys/zfs_delay.h>
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#include <sys/sunddi.h>
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#include <sys/ctype.h>
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#include <sys/disp.h>
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#include <sys/trace.h>
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#include <sys/procfs_list.h>
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#include <sys/mod.h>
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#include <sys/uio_impl.h>
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#include <sys/zfs_context_os.h>
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#else /* _KERNEL || _STANDALONE */
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#define	_SYS_MUTEX_H
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#define	_SYS_RWLOCK_H
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#define	_SYS_CONDVAR_H
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#define	_SYS_VNODE_H
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#define	_SYS_VFS_H
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#define	_SYS_SUNDDI_H
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#define	_SYS_CALLB_H
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#include <stdio.h>
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#include <stdlib.h>
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#include <stddef.h>
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#include <stdarg.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include <errno.h>
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#include <string.h>
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#include <pthread.h>
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#include <setjmp.h>
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#include <assert.h>
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#include <umem.h>
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#include <limits.h>
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#include <atomic.h>
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#include <dirent.h>
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#include <time.h>
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#include <ctype.h>
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#include <signal.h>
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#include <sys/mman.h>
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#include <sys/types.h>
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#include <sys/cred.h>
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#include <sys/sysmacros.h>
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#include <sys/resource.h>
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#include <sys/byteorder.h>
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#include <sys/list.h>
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#include <sys/mod.h>
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#include <sys/uio.h>
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#include <sys/zfs_debug.h>
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#include <sys/kstat.h>
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#include <sys/u8_textprep.h>
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#include <sys/sysevent.h>
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#include <sys/sysevent/eventdefs.h>
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#include <sys/sunddi.h>
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#include <sys/debug.h>
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#include <sys/utsname.h>
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#include <sys/trace_zfs.h>
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#include <sys/zfs_context_os.h>
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/*
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 * Stack
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 */
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#define	noinline	__attribute__((noinline))
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#define	likely(x)	__builtin_expect((x), 1)
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#define	unlikely(x)	__builtin_expect((x), 0)
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/*
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 * Debugging
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 */
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/*
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 * Note that we are not using the debugging levels.
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 */
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#define	CE_CONT		0	/* continuation		*/
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#define	CE_NOTE		1	/* notice		*/
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#define	CE_WARN		2	/* warning		*/
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#define	CE_PANIC	3	/* panic		*/
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#define	CE_IGNORE	4	/* print nothing	*/
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/*
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 * ZFS debugging
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 */
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extern void dprintf_setup(int *argc, char **argv);
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extern void cmn_err(int, const char *, ...);
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extern void vcmn_err(int, const char *, va_list);
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extern __attribute__((noreturn)) void panic(const char *, ...);
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extern __attribute__((noreturn)) void vpanic(const char *, va_list);
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#define	fm_panic	panic
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/*
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 * DTrace SDT probes have different signatures in userland than they do in
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 * the kernel.  If they're being used in kernel code, re-define them out of
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 * existence for their counterparts in libzpool.
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 *
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 * Here's an example of how to use the set-error probes in userland:
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 * zfs$target:::set-error /arg0 == EBUSY/ {stack();}
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 *
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 * Here's an example of how to use DTRACE_PROBE probes in userland:
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 * If there is a probe declared as follows:
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 * DTRACE_PROBE2(zfs__probe_name, uint64_t, blkid, dnode_t *, dn);
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 * Then you can use it as follows:
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 * zfs$target:::probe2 /copyinstr(arg0) == "zfs__probe_name"/
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 *     {printf("%u %p\n", arg1, arg2);}
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 */
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#ifdef DTRACE_PROBE
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#undef	DTRACE_PROBE
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#endif	/* DTRACE_PROBE */
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#define	DTRACE_PROBE(a)
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#ifdef DTRACE_PROBE1
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#undef	DTRACE_PROBE1
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#endif	/* DTRACE_PROBE1 */
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#define	DTRACE_PROBE1(a, b, c)
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#ifdef DTRACE_PROBE2
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#undef	DTRACE_PROBE2
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#endif	/* DTRACE_PROBE2 */
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#define	DTRACE_PROBE2(a, b, c, d, e)
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#ifdef DTRACE_PROBE3
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#undef	DTRACE_PROBE3
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#endif	/* DTRACE_PROBE3 */
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#define	DTRACE_PROBE3(a, b, c, d, e, f, g)
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#ifdef DTRACE_PROBE4
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#undef	DTRACE_PROBE4
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#endif	/* DTRACE_PROBE4 */
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#define	DTRACE_PROBE4(a, b, c, d, e, f, g, h, i)
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/*
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 * Tunables.
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 */
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typedef struct zfs_kernel_param {
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	const char *name;	/* unused stub */
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} zfs_kernel_param_t;
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#define	ZFS_MODULE_PARAM(scope_prefix, name_prefix, name, type, perm, desc)
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#define	ZFS_MODULE_PARAM_ARGS void
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#define	ZFS_MODULE_PARAM_CALL(scope_prefix, name_prefix, name, setfunc, \
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	getfunc, perm, desc)
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/*
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 * Threads.
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 */
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typedef pthread_t	kthread_t;
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#define	TS_RUN		0x00000002
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#define	TS_JOINABLE	0x00000004
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#define	curthread	((void *)(uintptr_t)pthread_self())
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#define	kpreempt(x)	yield()
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#define	getcomm()	"unknown"
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#define	thread_create_named(name, stk, stksize, func, arg, len, \
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    pp, state, pri)	\
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	zk_thread_create(func, arg, stksize, state)
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#define	thread_create(stk, stksize, func, arg, len, pp, state, pri)	\
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	zk_thread_create(func, arg, stksize, state)
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#define	thread_exit()	pthread_exit(NULL)
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#define	thread_join(t)	pthread_join((pthread_t)(t), NULL)
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#define	newproc(f, a, cid, pri, ctp, pid)	(ENOSYS)
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/* in libzpool, p0 exists only to have its address taken */
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typedef struct proc {
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	uintptr_t	this_is_never_used_dont_dereference_it;
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} proc_t;
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extern struct proc p0;
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#define	curproc		(&p0)
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#define	PS_NONE		-1
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extern kthread_t *zk_thread_create(void (*func)(void *), void *arg,
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    size_t stksize, int state);
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#define	issig(why)	(FALSE)
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#define	ISSIG(thr, why)	(FALSE)
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#define	kpreempt_disable()	((void)0)
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#define	kpreempt_enable()	((void)0)
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#define	cond_resched()		sched_yield()
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/*
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 * Mutexes
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 */
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typedef struct kmutex {
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	pthread_mutex_t		m_lock;
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	pthread_t		m_owner;
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} kmutex_t;
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#define	MUTEX_DEFAULT		0
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#define	MUTEX_NOLOCKDEP		MUTEX_DEFAULT
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#define	MUTEX_HELD(mp)		pthread_equal((mp)->m_owner, pthread_self())
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#define	MUTEX_NOT_HELD(mp)	!MUTEX_HELD(mp)
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extern void mutex_init(kmutex_t *mp, char *name, int type, void *cookie);
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extern void mutex_destroy(kmutex_t *mp);
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extern void mutex_enter(kmutex_t *mp);
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extern void mutex_exit(kmutex_t *mp);
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extern int mutex_tryenter(kmutex_t *mp);
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#define	NESTED_SINGLE 1
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#define	mutex_enter_nested(mp, class) mutex_enter(mp)
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/*
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 * RW locks
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 */
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typedef struct krwlock {
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	pthread_rwlock_t	rw_lock;
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	pthread_t		rw_owner;
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	uint_t			rw_readers;
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} krwlock_t;
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typedef int krw_t;
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#define	RW_READER		0
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#define	RW_WRITER		1
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#define	RW_DEFAULT		RW_READER
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#define	RW_NOLOCKDEP		RW_READER
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#define	RW_READ_HELD(rw)	((rw)->rw_readers > 0)
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#define	RW_WRITE_HELD(rw)	pthread_equal((rw)->rw_owner, pthread_self())
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#define	RW_LOCK_HELD(rw)	(RW_READ_HELD(rw) || RW_WRITE_HELD(rw))
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extern void rw_init(krwlock_t *rwlp, char *name, int type, void *arg);
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extern void rw_destroy(krwlock_t *rwlp);
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extern void rw_enter(krwlock_t *rwlp, krw_t rw);
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extern int rw_tryenter(krwlock_t *rwlp, krw_t rw);
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extern int rw_tryupgrade(krwlock_t *rwlp);
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extern void rw_exit(krwlock_t *rwlp);
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#define	rw_downgrade(rwlp) do { } while (0)
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 | 
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/*
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 * Credentials
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 */
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extern uid_t crgetuid(cred_t *cr);
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extern uid_t crgetruid(cred_t *cr);
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extern gid_t crgetgid(cred_t *cr);
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extern int crgetngroups(cred_t *cr);
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extern gid_t *crgetgroups(cred_t *cr);
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 | 
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/*
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 * Condition variables
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 */
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typedef pthread_cond_t		kcondvar_t;
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#define	CV_DEFAULT		0
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#define	CALLOUT_FLAG_ABSOLUTE	0x2
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 | 
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extern void cv_init(kcondvar_t *cv, char *name, int type, void *arg);
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extern void cv_destroy(kcondvar_t *cv);
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extern void cv_wait(kcondvar_t *cv, kmutex_t *mp);
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extern int cv_wait_sig(kcondvar_t *cv, kmutex_t *mp);
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extern int cv_timedwait(kcondvar_t *cv, kmutex_t *mp, clock_t abstime);
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extern int cv_timedwait_hires(kcondvar_t *cvp, kmutex_t *mp, hrtime_t tim,
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    hrtime_t res, int flag);
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extern void cv_signal(kcondvar_t *cv);
 | 
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extern void cv_broadcast(kcondvar_t *cv);
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#define	cv_timedwait_io(cv, mp, at)		cv_timedwait(cv, mp, at)
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#define	cv_timedwait_idle(cv, mp, at)		cv_timedwait(cv, mp, at)
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#define	cv_timedwait_sig(cv, mp, at)		cv_timedwait(cv, mp, at)
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#define	cv_wait_io(cv, mp)			cv_wait(cv, mp)
 | 
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#define	cv_wait_idle(cv, mp)			cv_wait(cv, mp)
 | 
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#define	cv_wait_io_sig(cv, mp)			cv_wait_sig(cv, mp)
 | 
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#define	cv_timedwait_sig_hires(cv, mp, t, r, f) \
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	cv_timedwait_hires(cv, mp, t, r, f)
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#define	cv_timedwait_idle_hires(cv, mp, t, r, f) \
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	cv_timedwait_hires(cv, mp, t, r, f)
 | 
						|
 | 
						|
/*
 | 
						|
 * Thread-specific data
 | 
						|
 */
 | 
						|
#define	tsd_get(k) pthread_getspecific(k)
 | 
						|
#define	tsd_set(k, v) pthread_setspecific(k, v)
 | 
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#define	tsd_create(kp, d) pthread_key_create((pthread_key_t *)kp, d)
 | 
						|
#define	tsd_destroy(kp) /* nothing */
 | 
						|
#ifdef __FreeBSD__
 | 
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typedef off_t loff_t;
 | 
						|
#endif
 | 
						|
 | 
						|
/*
 | 
						|
 * kstat creation, installation and deletion
 | 
						|
 */
 | 
						|
extern kstat_t *kstat_create(const char *, int,
 | 
						|
    const char *, const char *, uchar_t, ulong_t, uchar_t);
 | 
						|
extern void kstat_install(kstat_t *);
 | 
						|
extern void kstat_delete(kstat_t *);
 | 
						|
extern void kstat_set_raw_ops(kstat_t *ksp,
 | 
						|
    int (*headers)(char *buf, size_t size),
 | 
						|
    int (*data)(char *buf, size_t size, void *data),
 | 
						|
    void *(*addr)(kstat_t *ksp, loff_t index));
 | 
						|
 | 
						|
/*
 | 
						|
 * procfs list manipulation
 | 
						|
 */
 | 
						|
 | 
						|
typedef struct procfs_list {
 | 
						|
	void		*pl_private;
 | 
						|
	kmutex_t	pl_lock;
 | 
						|
	list_t		pl_list;
 | 
						|
	uint64_t	pl_next_id;
 | 
						|
	size_t		pl_node_offset;
 | 
						|
} procfs_list_t;
 | 
						|
 | 
						|
#ifndef __cplusplus
 | 
						|
struct seq_file { };
 | 
						|
void seq_printf(struct seq_file *m, const char *fmt, ...);
 | 
						|
 | 
						|
typedef struct procfs_list_node {
 | 
						|
	list_node_t	pln_link;
 | 
						|
	uint64_t	pln_id;
 | 
						|
} procfs_list_node_t;
 | 
						|
 | 
						|
void procfs_list_install(const char *module,
 | 
						|
    const char *submodule,
 | 
						|
    const char *name,
 | 
						|
    mode_t mode,
 | 
						|
    procfs_list_t *procfs_list,
 | 
						|
    int (*show)(struct seq_file *f, void *p),
 | 
						|
    int (*show_header)(struct seq_file *f),
 | 
						|
    int (*clear)(procfs_list_t *procfs_list),
 | 
						|
    size_t procfs_list_node_off);
 | 
						|
void procfs_list_uninstall(procfs_list_t *procfs_list);
 | 
						|
void procfs_list_destroy(procfs_list_t *procfs_list);
 | 
						|
void procfs_list_add(procfs_list_t *procfs_list, void *p);
 | 
						|
#endif
 | 
						|
 | 
						|
/*
 | 
						|
 * Kernel memory
 | 
						|
 */
 | 
						|
#define	KM_SLEEP		UMEM_NOFAIL
 | 
						|
#define	KM_PUSHPAGE		KM_SLEEP
 | 
						|
#define	KM_NOSLEEP		UMEM_DEFAULT
 | 
						|
#define	KM_NORMALPRI		0	/* not needed with UMEM_DEFAULT */
 | 
						|
#define	KMC_NODEBUG		UMC_NODEBUG
 | 
						|
#define	KMC_KVMEM		0x0
 | 
						|
#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	vmem_alloc(_s, _f)	kmem_alloc(_s, _f)
 | 
						|
#define	vmem_zalloc(_s, _f)	kmem_zalloc(_s, _f)
 | 
						|
#define	vmem_free(_b, _s)	kmem_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)	umem_cache_reap_now(_c);
 | 
						|
#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
 | 
						|
 */
 | 
						|
 | 
						|
#define	TASKQ_NAMELEN	31
 | 
						|
 | 
						|
typedef uintptr_t taskqid_t;
 | 
						|
typedef void (task_func_t)(void *);
 | 
						|
 | 
						|
typedef struct taskq_ent {
 | 
						|
	struct taskq_ent	*tqent_next;
 | 
						|
	struct taskq_ent	*tqent_prev;
 | 
						|
	task_func_t		*tqent_func;
 | 
						|
	void			*tqent_arg;
 | 
						|
	uintptr_t		tqent_flags;
 | 
						|
} taskq_ent_t;
 | 
						|
 | 
						|
typedef struct taskq {
 | 
						|
	char		tq_name[TASKQ_NAMELEN + 1];
 | 
						|
	kmutex_t	tq_lock;
 | 
						|
	krwlock_t	tq_threadlock;
 | 
						|
	kcondvar_t	tq_dispatch_cv;
 | 
						|
	kcondvar_t	tq_wait_cv;
 | 
						|
	kthread_t	**tq_threadlist;
 | 
						|
	int		tq_flags;
 | 
						|
	int		tq_active;
 | 
						|
	int		tq_nthreads;
 | 
						|
	int		tq_nalloc;
 | 
						|
	int		tq_minalloc;
 | 
						|
	int		tq_maxalloc;
 | 
						|
	kcondvar_t	tq_maxalloc_cv;
 | 
						|
	int		tq_maxalloc_wait;
 | 
						|
	taskq_ent_t	*tq_freelist;
 | 
						|
	taskq_ent_t	tq_task;
 | 
						|
} taskq_t;
 | 
						|
 | 
						|
#define	TQENT_FLAG_PREALLOC	0x1	/* taskq_dispatch_ent used */
 | 
						|
 | 
						|
#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 */
 | 
						|
 | 
						|
#define	TASKQID_INVALID		((taskqid_t)0)
 | 
						|
 | 
						|
extern taskq_t *system_taskq;
 | 
						|
extern taskq_t *system_delay_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) \
 | 
						|
	    ((void) sizeof (dc), taskq_create(a, b, maxclsyspri, d, e, f))
 | 
						|
extern taskqid_t taskq_dispatch(taskq_t *, task_func_t, void *, uint_t);
 | 
						|
extern taskqid_t taskq_dispatch_delay(taskq_t *, task_func_t, void *, uint_t,
 | 
						|
    clock_t);
 | 
						|
extern void	taskq_dispatch_ent(taskq_t *, task_func_t, void *, uint_t,
 | 
						|
    taskq_ent_t *);
 | 
						|
extern int	taskq_empty_ent(taskq_ent_t *);
 | 
						|
extern void	taskq_init_ent(taskq_ent_t *);
 | 
						|
extern void	taskq_destroy(taskq_t *);
 | 
						|
extern void	taskq_wait(taskq_t *);
 | 
						|
extern void	taskq_wait_id(taskq_t *, taskqid_t);
 | 
						|
extern void	taskq_wait_outstanding(taskq_t *, taskqid_t);
 | 
						|
extern int	taskq_member(taskq_t *, kthread_t *);
 | 
						|
extern taskq_t	*taskq_of_curthread(void);
 | 
						|
extern int	taskq_cancel_id(taskq_t *, taskqid_t);
 | 
						|
extern void	system_taskq_init(void);
 | 
						|
extern void	system_taskq_fini(void);
 | 
						|
 | 
						|
#define	XVA_MAPSIZE	3
 | 
						|
#define	XVA_MAGIC	0x78766174
 | 
						|
 | 
						|
extern char *vn_dumpdir;
 | 
						|
#define	AV_SCANSTAMP_SZ	32		/* length of anti-virus scanstamp */
 | 
						|
 | 
						|
typedef struct xoptattr {
 | 
						|
	inode_timespec_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_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
 | 
						|
 | 
						|
#define	F_FREESP	11
 | 
						|
#define	FIGNORECASE	0x80000 /* request case-insensitive lookups */
 | 
						|
 | 
						|
/*
 | 
						|
 * Random stuff
 | 
						|
 */
 | 
						|
#define	ddi_get_lbolt()		(gethrtime() >> 23)
 | 
						|
#define	ddi_get_lbolt64()	(gethrtime() >> 23)
 | 
						|
#define	hz	119	/* frequency when using gethrtime() >> 23 for lbolt */
 | 
						|
 | 
						|
#define	ddi_time_before(a, b)		(a < b)
 | 
						|
#define	ddi_time_after(a, b)		ddi_time_before(b, a)
 | 
						|
#define	ddi_time_before_eq(a, b)	(!ddi_time_after(a, b))
 | 
						|
#define	ddi_time_after_eq(a, b)		ddi_time_before_eq(b, a)
 | 
						|
 | 
						|
#define	ddi_time_before64(a, b)		(a < b)
 | 
						|
#define	ddi_time_after64(a, b)		ddi_time_before64(b, a)
 | 
						|
#define	ddi_time_before_eq64(a, b)	(!ddi_time_after64(a, b))
 | 
						|
#define	ddi_time_after_eq64(a, b)	ddi_time_before_eq64(b, a)
 | 
						|
 | 
						|
extern void delay(clock_t ticks);
 | 
						|
 | 
						|
#define	SEC_TO_TICK(sec)	((sec) * hz)
 | 
						|
#define	MSEC_TO_TICK(msec)	(howmany((hrtime_t)(msec) * hz, MILLISEC))
 | 
						|
#define	USEC_TO_TICK(usec)	(howmany((hrtime_t)(usec) * hz, MICROSEC))
 | 
						|
#define	NSEC_TO_TICK(nsec)	(howmany((hrtime_t)(nsec) * hz, NANOSEC))
 | 
						|
 | 
						|
#define	max_ncpus	64
 | 
						|
#define	boot_ncpus	(sysconf(_SC_NPROCESSORS_ONLN))
 | 
						|
 | 
						|
/*
 | 
						|
 * Process priorities as defined by setpriority(2) and getpriority(2).
 | 
						|
 */
 | 
						|
#define	minclsyspri	19
 | 
						|
#define	maxclsyspri	-20
 | 
						|
#define	defclsyspri	0
 | 
						|
 | 
						|
#define	CPU_SEQID	((uintptr_t)pthread_self() & (max_ncpus - 1))
 | 
						|
#define	CPU_SEQID_UNSTABLE	CPU_SEQID
 | 
						|
 | 
						|
#define	kcred		NULL
 | 
						|
#define	CRED()		NULL
 | 
						|
 | 
						|
#define	ptob(x)		((x) * PAGESIZE)
 | 
						|
 | 
						|
#define	NN_DIVISOR_1000	(1U << 0)
 | 
						|
#define	NN_NUMBUF_SZ	(6)
 | 
						|
 | 
						|
extern uint64_t physmem;
 | 
						|
extern const char *random_path;
 | 
						|
extern const char *urandom_path;
 | 
						|
 | 
						|
extern int highbit64(uint64_t i);
 | 
						|
extern int lowbit64(uint64_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);
 | 
						|
 | 
						|
static __inline__ uint32_t
 | 
						|
random_in_range(uint32_t range)
 | 
						|
{
 | 
						|
	uint32_t r;
 | 
						|
 | 
						|
	ASSERT(range != 0);
 | 
						|
 | 
						|
	if (range == 1)
 | 
						|
		return (0);
 | 
						|
 | 
						|
	(void) random_get_pseudo_bytes((uint8_t *)&r, sizeof (r));
 | 
						|
 | 
						|
	return (r % range);
 | 
						|
}
 | 
						|
 | 
						|
extern void kernel_init(int mode);
 | 
						|
extern void kernel_fini(void);
 | 
						|
extern void random_init(void);
 | 
						|
extern void random_fini(void);
 | 
						|
 | 
						|
struct spa;
 | 
						|
extern void show_pool_stats(struct spa *);
 | 
						|
extern int set_global_var(char const *arg);
 | 
						|
 | 
						|
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 uint32_t zone_get_hostid(void *zonep);
 | 
						|
 | 
						|
extern char *kmem_vasprintf(const char *fmt, va_list adx);
 | 
						|
extern char *kmem_asprintf(const char *fmt, ...);
 | 
						|
#define	kmem_strfree(str) kmem_free((str), strlen(str) + 1)
 | 
						|
#define	kmem_strdup(s)  strdup(s)
 | 
						|
 | 
						|
/*
 | 
						|
 * Hostname information
 | 
						|
 */
 | 
						|
extern int ddi_strtoull(const char *str, char **nptr, int base,
 | 
						|
    u_longlong_t *result);
 | 
						|
 | 
						|
typedef struct utsname	utsname_t;
 | 
						|
extern utsname_t *utsname(void);
 | 
						|
 | 
						|
/* 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 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 int secpolicy_zfs(const cred_t *cr);
 | 
						|
extern int secpolicy_zfs_proc(const cred_t *cr, proc_t *proc);
 | 
						|
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)
 | 
						|
 | 
						|
#define	zfs_sleep_until(wakeup)						\
 | 
						|
	do {								\
 | 
						|
		hrtime_t delta = wakeup - gethrtime();			\
 | 
						|
		struct timespec ts;					\
 | 
						|
		ts.tv_sec = delta / NANOSEC;				\
 | 
						|
		ts.tv_nsec = delta % NANOSEC;				\
 | 
						|
		(void) nanosleep(&ts, NULL);				\
 | 
						|
	} while (0)
 | 
						|
 | 
						|
typedef int fstrans_cookie_t;
 | 
						|
 | 
						|
extern fstrans_cookie_t spl_fstrans_mark(void);
 | 
						|
extern void spl_fstrans_unmark(fstrans_cookie_t);
 | 
						|
extern int __spl_pf_fstrans_check(void);
 | 
						|
extern int kmem_cache_reap_active(void);
 | 
						|
 | 
						|
 | 
						|
/*
 | 
						|
 * Kernel modules
 | 
						|
 */
 | 
						|
#define	__init
 | 
						|
#define	__exit
 | 
						|
 | 
						|
#endif  /* _KERNEL || _STANDALONE */
 | 
						|
 | 
						|
#ifdef __cplusplus
 | 
						|
};
 | 
						|
#endif
 | 
						|
 | 
						|
#endif	/* _SYS_ZFS_CONTEXT_H */
 |