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How to use get_results_dir_list method in autotest

Best Python code snippet using autotest_python

crash_handler.py

Source:crash_handler.py

...45        f.close()46    if report:47        gdb_report(filename)48    return filename49def get_results_dir_list(pid, core_dir_basename):50    """51    Get all valid output directories for the core file and the report. It works52    by inspecting files created by each test on /tmp and verifying if the53    PID of the process that crashed is a child or grandchild of the autotest54    test process. If it can't find any relationship (maybe a daemon that died55    during a test execution), it will write the core file to the debug dirs56    of all tests currently being executed. If there are no active autotest57    tests at a particular moment, it will return a list with ['/tmp'].58    @param pid: PID for the process that generated the core59    @param core_dir_basename: Basename for the directory that will hold both60            the core dump and the crash report.61    """62    pid_dir_dict = {}63    for debugdir_file in glob.glob("/tmp/autotest_results_dir.*"):64        a_pid = os.path.splitext(debugdir_file)[1]65        results_dir = open(debugdir_file).read().strip()66        pid_dir_dict[a_pid] = os.path.join(results_dir, core_dir_basename)67    results_dir_list = []68    # If a bug occurs and we can't grab the PID for the process that died, just69    # return all directories available and write to all of them.70    if pid is not None:71        while pid > 1:72            if pid in pid_dir_dict:73                results_dir_list.append(pid_dir_dict[pid])74            pid = get_parent_pid(pid)75    else:76        results_dir_list = pid_dir_dict.values()77    return (results_dir_list or78            pid_dir_dict.values() or79            [os.path.join("/tmp", core_dir_basename)])80def get_info_from_core(path):81    """82    Reads a core file and extracts a dictionary with useful core information.83    Right now, the only information extracted is the full executable name.84    @param path: Path to core file.85    """86    full_exe_path = None87    output = commands.getoutput('gdb -c %s batch' % path)88    path_pattern = re.compile("Core was generated by `([^\0]+)'", re.IGNORECASE)89    match = re.findall(path_pattern, output)90    for m in match:91        # Sometimes the command line args come with the core, so get rid of them92        m = m.split(" ")[0]93        if os.path.isfile(m):94            full_exe_path = m95            break96    if full_exe_path is None:97        syslog.syslog("Could not determine from which application core file %s "98                      "is from" % path)99    return {'full_exe_path': full_exe_path}100def gdb_report(path):101    """102    Use GDB to produce a report with information about a given core.103    @param path: Path to core file.104    """105    # Get full command path106    exe_path = get_info_from_core(path)['full_exe_path']107    basedir = os.path.dirname(path)108    gdb_command_path = os.path.join(basedir, 'gdb_cmd')109    if exe_path is not None:110        # Write a command file for GDB111        gdb_command = 'bt full\n'112        write_to_file(gdb_command_path, gdb_command)113        # Take a backtrace from the running program114        gdb_cmd = ('gdb -e %s -c %s -x %s -n -batch -quiet' %115                   (exe_path, path, gdb_command_path))116        backtrace = commands.getoutput(gdb_cmd)117        # Sanitize output before passing it to the report118        backtrace = backtrace.decode('utf-8', 'ignore')119    else:120        exe_path = "Unknown"121        backtrace = ("Could not determine backtrace for core file %s" % path)122    # Composing the format_dict123    report = "Program: %s\n" % exe_path124    if crashed_pid is not None:125        report += "PID: %s\n" % crashed_pid126    if signal is not None:127        report += "Signal: %s\n" % signal128    if hostname is not None:129        report += "Hostname: %s\n" % hostname130    if crash_time is not None:131        report += ("Time of the crash (according to kernel): %s\n" %132                   time.ctime(float(crash_time)))133    report += "Program backtrace:\n%s\n" % backtrace134    report_path = os.path.join(basedir, 'report')135    write_to_file(report_path, report)136def write_cores(core_data, dir_list):137    """138    Write core files to all directories, optionally providing reports.139    @param core_data: Contents of the core file.140    @param dir_list: List of directories the cores have to be written.141    @param report: Whether reports are to be generated for those core files.142    """143    syslog.syslog("Writing core files to %s" % dir_list)144    for result_dir in dir_list:145        if not os.path.isdir(result_dir):146            os.makedirs(result_dir)147        core_path = os.path.join(result_dir, 'core')148        core_path = write_to_file(core_path, core_file, report=True)149if __name__ == "__main__":150    syslog.openlog('AutotestCrashHandler', 0, syslog.LOG_DAEMON)151    global crashed_pid, crash_time, uid, signal, hostname, exe152    try:153        full_functionality = False154        try:155            crashed_pid, crash_time, uid, signal, hostname, exe = sys.argv[1:]156            full_functionality = True157        except ValueError, e:158            # Probably due a kernel bug, we can't exactly map the parameters159            # passed to this script. So we have to reduce the functionality160            # of the script (just write the core at a fixed place).161            syslog.syslog("Unable to unpack parameters passed to the "162                          "script. Operating with limited functionality.")163            crashed_pid, crash_time, uid, signal, hostname, exe = (None, None,164                                                                   None, None,165                                                                   None, None)166        if full_functionality:167            core_dir_name = 'crash.%s.%s' % (exe, crashed_pid)168        else:169            core_dir_name = 'core.%s' % generate_random_string(4)170        # Get the filtered results dir list171        results_dir_list = get_results_dir_list(crashed_pid, core_dir_name)172        # Write the core file to the appropriate directory173        # (we are piping it to this script)174        core_file = sys.stdin.read()175        if (exe is not None) and (crashed_pid is not None):176            syslog.syslog("Application %s, PID %s crashed" % (exe, crashed_pid))177        write_cores(core_file, results_dir_list)178    except Exception, e:...

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