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set TEST_NAME "dtrace_clone"
set build_dir ""
set test_progs {"dtrace_clone"}
if {![installtest_p]} { untested $TEST_NAME; return }
if {![uprobes_p]} { untested $TEST_NAME; return }
source $srcdir/$subdir/test_progs.tcl
# We have to be root to use CLONE_NEWPID.
proc run_test_prog {} {
global build_dir
as_root $build_dir/dtrace_clone
return 0
}
# Here's an explanation of the output. On kernels that support
# CLONE_NEWPID (new pid namespace), we'll see the following output:
# main - pid: XXX
# main - child pid: YYY
# child1 - pid: 1
# child1 - child2 pid: 2
# child2 - pid: 1
# main - finished
# On kernels with CLONE_NEWPID, the pids assigned to the children are
# fixed since they exist in their own pid namespace. Because not all
# kernels support CLONE_NEWPID, we have to accept all pids.
set output_string "main - pid: \[0-9\]+\r\nmain - child pid: \[0-9\]+\r\nchild1 - pid: \[0-9\]+\r\nchild1 - child2 pid: \[0-9\]+\r\nchild2 - pid: \[0-9\]+\r\nmain - finished\r\n"
# Build everything (without semaphores)
set TEST_NAME "dtrace_clone1"
if {[build_test_progs "Makefile.clone" $test_progs] == 0} {
fail "$TEST_NAME - build failure"
cleanup_test_progs
return
} else {
pass "$TEST_NAME - build success"
}
# Run the test (without semaphores)
set TEST_NAME "dtrace_clone2"
stap_run $TEST_NAME run_test_prog $output_string \
$srcdir/$subdir/dtrace_clone.stp $build_dir/dtrace_clone
# Build everything (with semaphores)
set TEST_NAME "dtrace_clone3"
if {[build_test_progs "Makefile.clone" $test_progs "-DUSE_SEMAPHORES"] == 0} {
fail "$TEST_NAME - build failure"
cleanup_test_progs
return
} else {
pass "$TEST_NAME - build success"
}
# Run the test (with semaphores)
set TEST_NAME "dtrace_clone4"
stap_run $TEST_NAME run_test_prog $output_string \
$srcdir/$subdir/dtrace_clone.stp $build_dir/dtrace_clone
# Cleanup
cleanup_test_progs
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