3 bup_python="$(dirname "$0")/bup-python" || exit $?
4 exec "$bup_python" "$0" ${1+"$@"}
8 import sys, os, glob, subprocess
10 from bup import options, git
11 from bup.helpers import Sha1, chunkyreader, istty2, log, progress
14 nullf = open('/dev/null')
21 # at least in python 2.5, using "stdout=2" or "stdout=sys.stderr" below
22 # doesn't actually work, because subprocess closes fd #2 right before
23 # execing for some reason. So we work around it by duplicating the fd
25 fd = os.dup(2) # copy stderr
27 p = subprocess.Popen(argv, stdout=fd, close_fds=False)
36 p = subprocess.Popen(['par2', '--help'],
37 stdout=nullf, stderr=nullf, stdin=nullf)
40 log('fsck: warning: par2 not found; disabling recovery features.\n')
45 if opt.verbose >= lvl:
53 def par2_generate(base):
54 return run(['par2', 'create', '-n1', '-c200'] + parv(2)
55 + ['--', base, base+'.pack', base+'.idx'])
57 def par2_verify(base):
58 return run(['par2', 'verify'] + parv(3) + ['--', base])
60 def par2_repair(base):
61 return run(['par2', 'repair'] + parv(2) + ['--', base])
63 def quick_verify(base):
64 f = open(base + '.pack', 'rb')
67 assert(len(wantsum) == 20)
70 for b in chunkyreader(f, os.fstat(f.fileno()).st_size - 20):
72 if sum.digest() != wantsum:
73 raise ValueError('expected %r, got %r' % (wantsum.encode('hex'),
81 except Exception as e:
82 log('error: %s\n' % e)
86 return run(['git', 'verify-pack', '--', base])
89 def do_pack(base, last, par2_exists):
91 if par2_ok and par2_exists and (opt.repair or not opt.generate):
92 vresult = par2_verify(base)
95 rresult = par2_repair(base)
97 action_result = 'failed'
98 log('%s par2 repair: failed (%d)\n' % (last, rresult))
101 action_result = 'repaired'
102 log('%s par2 repair: succeeded (0)\n' % last)
105 action_result = 'failed'
106 log('%s par2 verify: failed (%d)\n' % (last, vresult))
110 elif not opt.generate or (par2_ok and not par2_exists):
111 gresult = git_verify(base)
113 action_result = 'failed'
114 log('%s git verify: failed (%d)\n' % (last, gresult))
117 if par2_ok and opt.generate:
118 presult = par2_generate(base)
120 action_result = 'failed'
121 log('%s par2 create: failed (%d)\n' % (last, presult))
124 action_result = 'generated'
128 assert(opt.generate and (not par2_ok or par2_exists))
129 action_result = 'exists' if par2_exists else 'skipped'
131 print last, action_result
136 bup fsck [options...] [filenames...]
138 r,repair attempt to repair errors using par2 (dangerous!)
139 g,generate generate auto-repair information using par2
140 v,verbose increase verbosity (can be used more than once)
141 quick just check pack sha1sum, don't use git verify-pack
142 j,jobs= run 'n' jobs in parallel
143 par2-ok immediately return 0 if par2 is ok, 1 if not
144 disable-par2 ignore par2 even if it is available
146 o = options.Options(optspec)
147 (opt, flags, extra) = o.parse(sys.argv[1:])
152 sys.exit(0) # 'true' in sh
158 git.check_repo_or_die()
161 debug('fsck: No filenames given: checking all packs.\n')
162 extra = glob.glob(git.repo('objects/pack/*.pack'))
168 if name.endswith('.pack'):
170 elif name.endswith('.idx'):
172 elif name.endswith('.par2'):
174 elif os.path.exists(name + '.pack'):
177 raise Exception('%s is not a pack file!' % name)
178 (dir,last) = os.path.split(base)
179 par2_exists = os.path.exists(base + '.par2')
180 if par2_exists and os.stat(base + '.par2').st_size == 0:
183 debug('fsck: checking %s (%s)\n'
184 % (last, par2_ok and par2_exists and 'par2' or 'git'))
186 progress('fsck (%d/%d)\r' % (count, len(extra)))
189 nc = do_pack(base, last, par2_exists)
193 while len(outstanding) >= opt.jobs:
196 if pid in outstanding:
205 sys.exit(do_pack(base, last, par2_exists))
206 except Exception as e:
207 log('exception: %r\n' % e)
210 while len(outstanding):
213 if pid in outstanding:
218 progress('fsck (%d/%d)\r' % (count, len(extra)))
221 debug('fsck done. \n')