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.compat import range
13 from bup.helpers import log
19 l.append(chr(random.randrange(0,256)))
24 bup damage [-n count] [-s maxsize] [-S seed] <filenames...>
26 WARNING: THIS COMMAND IS EXTREMELY DANGEROUS
27 n,num= number of blocks to damage
28 s,size= maximum size of each damaged block
29 percent= maximum size of each damaged block (as a percent of entire file)
30 equal spread damage evenly throughout the file
31 S,seed= random number seed (for repeatable tests)
33 o = options.Options(optspec)
34 (opt, flags, extra) = o.parse(sys.argv[1:])
37 o.fatal('filenames expected')
43 log('Damaging "%s"...\n' % name)
45 st = os.fstat(f.fileno())
47 if opt.percent or opt.size:
48 ms1 = int(float(opt.percent or 0)/100.0*size) or size
49 ms2 = opt.size or size
50 maxsize = min(ms1, ms2)
53 chunks = opt.num or 10
54 chunksize = size/chunks
55 for r in range(chunks):
56 sz = random.randrange(1, maxsize+1)
62 ofs = random.randrange(0, size - sz + 1)
63 log(' %6d bytes at %d\n' % (sz, ofs))
65 f.write(randblock(sz))