Crash MCP Server

import os import glob from typing import List, Optional, Dict import logging logger = logging.getLogger(__name__) # Common crash dump names DUMP_PATTERNS = ["vmcore", "core.*", "*.dump", "crash.*"] # Common kernel image names KERNEL_PATTERNS = ["vmlinux*", "System.map*"] class CrashDiscovery: """ Helper to discover crash dumps and matching kernels. """ @staticmethod def find_dumps(search_paths: List[str]) -> List[Dict[str, str]]: """ Scans given paths for crash dump files. Returns a list of dicts with 'path', 'filename', 'size', 'modified'. """ dumps = [] for path in search_paths: if not os.path.isdir(path): continue for pattern in DUMP_PATTERNS: full_pattern = os.path.join(path, "**", pattern) # recursive search for filepath in glob.glob(full_pattern, recursive=True): if os.path.isfile(filepath): stat = os.stat(filepath) dumps.append({ "path": filepath, "filename": os.path.basename(filepath), "size": stat.st_size, "modified": stat.st_mtime }) return dumps @staticmethod def match_kernel(dump_path: str, search_paths: List[str]) -> Optional[str]: """ Attempts to find a matching kernel/debuginfo for the specific dump. This is a heuristic implementation. """ # 1. Look in the same directory as the dump dump_dir = os.path.dirname(dump_path) for pattern in KERNEL_PATTERNS: matches = glob.glob(os.path.join(dump_dir, pattern)) if matches: # Prefer vmlinux over system.map if multiple, or just take first # simple heuristic: look for vmlinux explicitly first vmlinux = next((m for m in matches if "vmlinux" in os.path.basename(m)), None) if vmlinux: return vmlinux return matches[0] # 2. Look in global search paths (e.g. /usr/lib/debug/lib/modules...) # This is where we would implement more complex logic based on `file` output of the dump # to get the kernel version string. # For now, we return None if not found alongside. return None @staticmethod def get_kernel_version_from_dump(dump_path: str) -> Optional[str]: """ Placeholder: read dump header to extract kernel version. Useful for precise matching. """ # Would require invoking 'crash --minimal' or 'file' command return None