AppleOS Kernel Panic Parser

Common errors

• la_panic: command not found

  cause The `la_panic` executable is not in the system's PATH, or the library was not installed correctly (e.g., in a virtual environment not activated).
  fix Ensure `la-panic` is installed in the active environment: `pip install la-panic`. If using `python3 -m pip install --user`, ensure your user's script directory is in your PATH. If in a virtual environment, activate it: `source .venv/bin/activate`.

• subprocess.CalledProcessError: Command '['la_panic', 'parser', 'parse', 'non_existent_file.ips']' returned non-zero exit status 1.

  cause The `la_panic` command-line tool encountered an error, likely because the specified `.ips` file does not exist or is unreadable by the process.
  fix Verify that the `.ips` file path is correct and that the file exists at that location. Check file permissions to ensure the program can read it. For robustness, check `result.stderr` for more specific error messages from `la_panic` itself.

Warnings

• gotcha The `la-panic` library is primarily a command-line interface tool. Direct programmatic access via Python imports and an API might be limited or undocumented. Users should plan to interact with it via `subprocess` for parsing tasks.
  Fix: Use `subprocess.run()` to execute `la_panic` commands and capture output for integration into Python applications.
• gotcha Providing an incorrect or inaccessible file path for the `.ips` report will lead to errors. Ensure the file exists and the program has read permissions.
  Fix: Always validate file paths before passing them to the `la_panic` command. Use `os.path.exists()` and proper error handling for `FileNotFoundError`.

Install

• pip install la-panic Install latest version

Imports

• la_panic (CLI Tool)

  import subprocess
  subprocess.run(['la_panic', ...])

  la-panic is predominantly a command-line interface (CLI) tool. Direct programmatic imports for a Python API are not clearly documented; interaction is typically via subprocess calls.

Quickstart

This quickstart demonstrates how to interact with `la-panic` using Python's `subprocess` module, as it is primarily a command-line interface tool. It creates a dummy `.ips` file and then attempts to parse it. In a real application, replace `dummy_panic.ips` with the actual path to your AppleOS kernel panic report.

import subprocess
import os

# Create a dummy .ips file for demonstration purposes
# In a real scenario, you would replace 'dummy_panic.ips' with your actual kernel panic file.
dummy_ips_content = """
panic(cpu 0 caller 0xfffffff012345678): "some kernel panic message"\n
Backtrace (CPU 0), Frame : Return Address\n
<Some raw panic data>\n
"""
dummy_file_path = "dummy_panic.ips"
with open(dummy_file_path, "w") as f:
    f.write(dummy_ips_content)

try:
    # Example: Running the parser tool
    # Replace 'dummy_panic.ips' with the path to your actual .ips file.
    print(f"Attempting to parse: {dummy_file_path}")
    result = subprocess.run(
        ['la_panic', 'parser', 'parse', dummy_file_path],
        capture_output=True, text=True, check=True
    )
    print("\n--- Parser Output ---")
    print(result.stdout)
    if result.stderr:
        print("\n--- Parser Errors (Stderr) ---")
        print(result.stderr)

except FileNotFoundError:
    print(f"Error: The 'la_panic' command was not found. Is the library installed and in your PATH?")
except subprocess.CalledProcessError as e:
    print(f"Error during parsing: {e}")
    print(f"Stdout: {e.stdout}")
    print(f"Stderr: {e.stderr}")
except Exception as e:
    print(f"An unexpected error occurred: {e}")
finally:
    # Clean up the dummy file
    if os.path.exists(dummy_file_path):
        os.remove(dummy_file_path)
        print(f"Cleaned up {dummy_file_path}")