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#
# 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) 2012, Joyent, Inc. All rights reserved.
#
#
# First, make sure that we can successfully enable the io provider
#
if ! dtrace -P io -n BEGIN'{exit(0)}' > /dev/null 2>&1 ; then
echo failed to enable io provider with full privs
exit 1
fi
ppriv -s A=basic,dtrace_proc,dtrace_user $$
#
# Now make sure that we cannot enable the io provider with reduced privs
#
if ! dtrace -x errtags -P io -n BEGIN'{exit(1)}' 2>&1 | \
grep D_PDESC_ZERO > /dev/null 2>&1 ; then
echo successfully enabled the io provider with reduced privs
exit 1
fi
#
# Keeping our reduced privs, we want to assure that we can see every provider
# that we think we should be able to see -- and that we can see curpsinfo
# state but can't otherwise see arguments.
#
/usr/sbin/dtrace -wq -Cs /dev/stdin <<EOF
int seen[string];
int err;
#define CANENABLE(provider) \
provider::: \
/err == 0 && progenyof(\$pid) && !seen["provider"]/ \
{ \
trace(arg0); \
printf("\nsuccessful trace of arg0 in %s:%s:%s:%s\n", \
probeprov, probemod, probefunc, probename); \
exit(++err); \
} \
\
provider::: \
/progenyof(\$pid)/ \
{ \
seen["provider"]++; \
} \
\
provider::: \
/progenyof(\$pid)/ \
{ \
errstr = "provider"; \
this->ignore = stringof(curpsinfo->pr_psargs); \
errstr = ""; \
} \
\
END \
/err == 0 && !seen["provider"]/ \
{ \
printf("no probes from provider\n"); \
exit(++err); \
} \
\
END \
/err == 0/ \
{ \
printf("saw %d probes from provider\n", seen["provider"]); \
}
CANENABLE(proc)
CANENABLE(sched)
CANENABLE(vminfo)
CANENABLE(sysinfo)
BEGIN
{
/*
* We'll kick off a system of a do-nothing command -- which should be
* enough to kick proc, sched, vminfo and sysinfo probes.
*/
system("echo > /dev/null");
}
ERROR
/err == 0 && errstr != ""/
{
printf("fatal error: couldn't read curpsinfo->pr_psargs in ");
printf("%s-provided probe\n", errstr);
exit(++err);
}
proc:::exit
/progenyof(\$pid)/
{
exit(0);
}
tick-10ms
/i++ > 500/
{
printf("exit probe did not seem to fire\n");
exit(++err);
}
EOF
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