18161786c6
seven arguments. The original test uses Solaris' uadmin system call to trigger the test probe; this change adds a sysctl to the dtrace_test module and gets the test program to trigger the test probe via the sysctl handler. The test is currently failing on amd64 because of some bugs in the way that probe arguments beyond the first five are obtained - these bugs will be fixed in a separate change.
111 lines
3.0 KiB
C
111 lines
3.0 KiB
C
/*-
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* Copyright 2008 John Birrell <jb@FreeBSD.org>
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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 AUTHOR 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 AUTHOR 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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* $FreeBSD$
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*
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*/
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#include "opt_kdtrace.h"
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#include <sys/cdefs.h>
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#include <sys/types.h>
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/conf.h>
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#include <sys/kernel.h>
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#include <sys/module.h>
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#include <sys/sdt.h>
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#include <sys/sysctl.h>
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#include <sys/vnode.h>
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SDT_PROVIDER_DEFINE(test);
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SDT_PROBE_DEFINE7(test, , , sdttest, sdttest, "int", "int", "int", "int", "int",
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"int", "int");
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/*
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* These are variables that the DTrace test suite references in the
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* Solaris kernel. We define them here so that the tests function
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* unaltered.
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*/
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int kmem_flags;
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typedef struct vnode vnode_t;
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vnode_t dummy;
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vnode_t *rootvp = &dummy;
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/*
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* Test SDT probes with more than 5 arguments. On amd64, such probes require
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* special handling since only the first 5 arguments will be passed to
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* dtrace_probe() in registers; the rest must be fetched off the stack.
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*/
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static int
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dtrace_test_sdttest(SYSCTL_HANDLER_ARGS)
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{
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int val, error;
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val = 0;
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error = sysctl_handle_int(oidp, &val, 0, req);
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if (error || req->newptr == NULL)
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return (error);
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else if (val == 0)
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return (0);
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SDT_PROBE7(test, , , sdttest, 1, 2, 3, 4, 5, 6, 7);
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return (error);
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}
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static SYSCTL_NODE(_debug, OID_AUTO, dtracetest, CTLFLAG_RD, 0, "");
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SYSCTL_PROC(_debug_dtracetest, OID_AUTO, sdttest, CTLTYPE_INT | CTLFLAG_RW,
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NULL, 0, dtrace_test_sdttest, "I", "Trigger the SDT test probe");
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static int
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dtrace_test_modevent(module_t mod, int type, void *data)
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{
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int error = 0;
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switch (type) {
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case MOD_LOAD:
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break;
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case MOD_UNLOAD:
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break;
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case MOD_SHUTDOWN:
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break;
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default:
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error = EOPNOTSUPP;
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break;
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}
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return (error);
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}
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DEV_MODULE(dtrace_test, dtrace_test_modevent, NULL);
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MODULE_VERSION(dtrace_test, 1);
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MODULE_DEPEND(dtrace_test, dtraceall, 1, 1, 1);
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