LLDB script that prints all os log subsystems

oslog_info.py

import lldb

def _on_hit(frame, bp_loc, _dict):
    process = frame.GetThread().GetProcess()
    error = lldb.SBError()

    # os_log_t os_log_create(const char *subsystem <$x0>, const char *category <$x1>);
    p_sub = frame.EvaluateExpression("$x0").GetValueAsUnsigned()
    p_cat = frame.EvaluateExpression("$x1").GetValueAsUnsigned()

    # read as c-strings
    subsystem = process.ReadCStringFromMemory(p_sub, 256, error) \
                if error.Success() else "<unreadable>"
    category  = process.ReadCStringFromMemory(p_cat, 256, error) \
                if error.Success() else "<unreadable>"

    print(f'os_log_create(subsystem: "{subsystem}", category: "{category}")')

    # log and keep going
    return False

def __lldb_init_module(debugger, _dict):
    target = debugger.GetSelectedTarget()
    bp = target.BreakpointCreateByName("os_log_create")
    bp.SetScriptCallbackFunction(__name__ + "._on_hit")
    print("🌀 os_log_create logger is active.")