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import os
import struct
import subprocess
import lldb
from lldbsuite.test.decorators import *
from lldbsuite.test.lldbtest import *
from lldbsuite.test import lldbutil
class FreeBSDKernelVMCoreTestCase(TestBase):
NO_DEBUG_INFO_TESTCASE = True
mydir = TestBase.compute_mydir(__file__)
def test_mem(self):
kernel_exec = "/boot/kernel/kernel"
mem_device = "/dev/mem"
if not os.access(kernel_exec, os.R_OK):
self.skipTest("Kernel @ %s is not readable" % (kernel_exec,))
if not os.access(mem_device, os.R_OK):
self.skipTest("Memory @ %s is not readable" % (mem_device,))
target = self.dbg.CreateTarget(kernel_exec)
process = target.LoadCore(mem_device)
hz_value = int(subprocess.check_output(["sysctl", "-n", "kern.hz"]))
self.assertTrue(process, PROCESS_IS_VALID)
self.assertEqual(process.GetNumThreads(), 1)
self.assertEqual(process.GetProcessID(), 0)
# test memory reading
self.expect("expr -- *(int *) &hz",
substrs=["(int) $0 = %d" % hz_value])
main_mod = target.GetModuleAtIndex(0)
hz_addr = (main_mod.FindSymbols("hz")[0].symbol.addr
.GetLoadAddress(target))
error = lldb.SBError()
self.assertEqual(process.ReadMemory(hz_addr, 4, error),
struct.pack("<I", hz_value))
self.dbg.DeleteTarget(target)
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