strace/tests/strace-k.test

#!/bin/sh

# Ensure that strace -k works.

. "${srcdir=.}/init.sh"

# strace -k is implemented using /proc/$pid/maps
[ -f /proc/self/maps ] ||
	framework_skip_ '/proc/self/maps is not available'

check_prog sed
check_prog tr

./stack-fcall ||
	fail_ 'stack-fcall failed'

$STRACE -h | grep '^-k' > /dev/null ||
	skip_ 'strace -k is not available'

args="-e getpid -k ./stack-fcall"
$STRACE $args > $LOG 2>&1 || {
	cat $LOG
	fail_ "$STRACE $args failed"
}

expected='getpid f3 f2 f1 f0 main '
result=$(sed -n '1,/(main+0x[a-f0-9]\+) .*/ s/^.*(\([^+]\+\)+0x[a-f0-9]\+) .*/\1/p' $LOG |
	tr '\n' ' ')

test "$result" = "$expected" || {
	cat $LOG
	echo "expected: \"$expected\""
	echo "result: \"$result\""
	fail_ "unexpected output from $STRACE $args"
}

exit 0