42 lines · python
1import os2import struct3import subprocess4 5import lldb6from lldbsuite.test.decorators import *7from lldbsuite.test.lldbtest import *8from lldbsuite.test import lldbutil9 10 11class FreeBSDKernelVMCoreTestCase(TestBase):12 NO_DEBUG_INFO_TESTCASE = True13 14 def test_mem(self):15 kernel_exec = "/boot/kernel/kernel"16 mem_device = "/dev/mem"17 18 if not os.access(kernel_exec, os.R_OK):19 self.skipTest("Kernel @ %s is not readable" % (kernel_exec,))20 if not os.access(mem_device, os.R_OK):21 self.skipTest("Memory @ %s is not readable" % (mem_device,))22 23 target = self.dbg.CreateTarget(kernel_exec)24 process = target.LoadCore(mem_device)25 hz_value = int(subprocess.check_output(["sysctl", "-n", "kern.hz"]))26 27 self.assertTrue(process, PROCESS_IS_VALID)28 self.assertEqual(process.GetNumThreads(), 1)29 self.assertEqual(process.GetProcessID(), 0)30 31 # test memory reading32 self.expect("expr -- *(int *) &hz", substrs=["(int) $0 = %d" % hz_value])33 34 main_mod = target.GetModuleAtIndex(0)35 hz_addr = main_mod.FindSymbols("hz")[0].symbol.addr.GetLoadAddress(target)36 error = lldb.SBError()37 self.assertEqual(38 process.ReadMemory(hz_addr, 4, error), struct.pack("<I", hz_value)39 )40 41 self.dbg.DeleteTarget(target)42