3 bup_python="$(dirname "$0")/bup-python" || exit $?
4 exec "$bup_python" "$0" ${1+"$@"}
8 from __future__ import absolute_import
11 from bup import options
12 from bup.helpers import log
18 l.append(chr(random.randrange(0,256)))
23 bup damage [-n count] [-s maxsize] [-S seed] <filenames...>
25 WARNING: THIS COMMAND IS EXTREMELY DANGEROUS
26 n,num= number of blocks to damage
27 s,size= maximum size of each damaged block
28 percent= maximum size of each damaged block (as a percent of entire file)
29 equal spread damage evenly throughout the file
30 S,seed= random number seed (for repeatable tests)
32 o = options.Options(optspec)
33 (opt, flags, extra) = o.parse(sys.argv[1:])
36 o.fatal('filenames expected')
42 log('Damaging "%s"...\n' % name)
44 st = os.fstat(f.fileno())
46 if opt.percent or opt.size:
47 ms1 = int(float(opt.percent or 0)/100.0*size) or size
48 ms2 = opt.size or size
49 maxsize = min(ms1, ms2)
52 chunks = opt.num or 10
53 chunksize = size/chunks
54 for r in range(chunks):
55 sz = random.randrange(1, maxsize+1)
61 ofs = random.randrange(0, size - sz + 1)
62 log(' %6d bytes at %d\n' % (sz, ofs))
64 f.write(randblock(sz))