129 lines
4.4 KiB
C
129 lines
4.4 KiB
C
/* $NetBSD: kstat.c,v 1.2 2012/06/19 21:25:26 njoly Exp $ */
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/*-
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* Copyright (c) 2009 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Andrew Doran.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/*-
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* Copyright (c) 2007 Pawel Jakub Dawidek <pjd@FreeBSD.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/param.h>
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#include <sys/kernel.h>
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#include <sys/systm.h>
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#include <sys/kmem.h>
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#include <sys/sysctl.h>
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#include <sys/kstat.h>
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kstat_t *
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kstat_create(char *module, int instance, char *name, char *class, uchar_t type,
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ulong_t ndata, uchar_t flags)
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{
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struct sysctl_oid *root;
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const struct sysctlnode *rnode, *mnode, *cnode;
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kstat_t *ks;
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KASSERT(instance == 0);
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KASSERT(type == KSTAT_TYPE_NAMED);
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KASSERT(flags == KSTAT_FLAG_VIRTUAL);
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ks = kmem_zalloc(sizeof(*ks), KM_SLEEP);
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ks->ks_ndata = ndata;
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sysctl_createv(&ks->ks_clog, 0, NULL, &rnode,
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CTLFLAG_PERMANENT,
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CTLTYPE_NODE, "kstat", NULL,
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NULL, 0, NULL, 0,
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CTL_CREATE, CTL_EOL);
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sysctl_createv(&ks->ks_clog, 0, &rnode, &mnode,
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CTLFLAG_PERMANENT,
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CTLTYPE_NODE, module, NULL,
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NULL, 0, NULL, 0,
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CTL_CREATE, CTL_EOL);
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sysctl_createv(&ks->ks_clog, 0, &mnode, &cnode,
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CTLFLAG_PERMANENT,
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CTLTYPE_NODE, class, NULL,
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NULL, 0, NULL, 0,
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CTL_CREATE, CTL_EOL);
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sysctl_createv(&ks->ks_clog, 0, &cnode, &ks->ks_node,
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CTLFLAG_PERMANENT,
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CTLTYPE_NODE, name, NULL,
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NULL, 0, NULL, 0,
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CTL_CREATE, CTL_EOL);
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return (ks);
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}
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void
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kstat_install(kstat_t *ks)
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{
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kstat_named_t *ksent;
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u_int i;
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ksent = ks->ks_data;
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for (i = 0; i < ks->ks_ndata; i++, ksent++) {
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KASSERT(ksent->data_type == KSTAT_DATA_UINT64);
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sysctl_createv(&ks->ks_clog, 0, &ks->ks_node, NULL,
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CTLFLAG_PERMANENT | CTLFLAG_READONLY,
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CTLTYPE_QUAD, ksent->name, NULL,
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NULL, 0, &ksent->value.ui64, 0,
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CTL_CREATE, CTL_EOL);
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}
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}
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void
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kstat_delete(kstat_t *ks)
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{
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sysctl_teardown(&ks->ks_clog);
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kmem_free(ks, sizeof(*ks));
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}
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