1#!/usr/bin/env python 2 3import argparse 4import re 5import sys 6 7 8def main(): 9 argp = argparse.ArgumentParser() 10 argp.add_argument('infile', type=argparse.FileType('rb'), 11 help='Input vmcore file') 12 argp.add_argument('outfile', type=argparse.FileType('wb'), 13 help='Output vmcore file') 14 args = argp.parse_args() 15 16 inf = args.infile 17 outf = args.outfile 18 line_re = re.compile(r"^% RD: (\d+) (\d+)") 19 20 # copy the first chunk that usually includes ELF headers 21 # (not output by patched libfbsdvmcore since libelf reads this) 22 outf.write(inf.read(1024)) 23 24 for l in sys.stdin: 25 m = line_re.match(l) 26 if m is None: 27 continue 28 offset, size = [int(x) for x in m.groups()] 29 30 inf.seek(offset) 31 outf.seek(offset) 32 outf.write(inf.read(size)) 33 34 35if __name__ == "__main__": 36 main() 37