3 import sys, stat, time, os, errno
4 from bup import metadata, options, git, index, drecurse, hlinkdb
5 from bup.helpers import *
6 from bup.hashsplit import GIT_MODE_TREE, GIT_MODE_FILE
16 self.cur = self.i.next()
22 def check_index(reader):
24 log('check: checking forward iteration...\n')
27 for e in reader.forward_iter():
30 log('%08x+%-4d %r\n' % (e.children_ofs, e.children_n,
32 assert(e.children_ofs)
33 assert(e.name.endswith('/'))
34 assert(not d.get(e.children_ofs))
36 if e.flags & index.IX_HASHVALID:
37 assert(e.sha != index.EMPTY_SHA)
39 assert(not e or e.name == '/') # last entry is *always* /
40 log('check: checking normal iteration...\n')
47 log('index error! at %r\n' % e)
49 log('check: passed.\n')
52 def clear_index(indexfile):
53 indexfiles = [indexfile, indexfile + '.meta', indexfile + '.hlink']
54 for indexfile in indexfiles:
55 path = git.repo(indexfile)
59 log('clear: removed %s\n' % path)
61 if e.errno != errno.ENOENT:
65 def update_index(top, excluded_paths):
66 # tmax and start must be epoch nanoseconds.
67 tmax = (time.time() - 1) * 10**9
68 ri = index.Reader(indexfile)
69 msw = index.MetaStoreWriter(indexfile + '.meta')
70 wi = index.Writer(indexfile, msw, tmax)
71 rig = IterHelper(ri.iter(name=top))
72 tstart = int(time.time()) * 10**9
74 hlinks = hlinkdb.HLinkDB(indexfile + '.hlink')
79 return (GIT_MODE_FILE, index.FAKE_SHA)
82 bup_dir = os.path.abspath(git.repo())
83 for (path,pst) in drecurse.recursive_dirlist([top], xdev=opt.xdev,
85 excluded_paths=excluded_paths):
86 if opt.verbose>=2 or (opt.verbose==1 and stat.S_ISDIR(pst.st_mode)):
87 sys.stdout.write('%s\n' % path)
89 qprogress('Indexing: %d\r' % total)
90 elif not (total % 128):
91 qprogress('Indexing: %d\r' % total)
93 while rig.cur and rig.cur.name > path: # deleted paths
97 if rig.cur.nlink > 1 and not stat.S_ISDIR(rig.cur.mode):
98 hlinks.del_path(rig.cur.name)
100 if rig.cur and rig.cur.name == path: # paths that already existed
101 if not stat.S_ISDIR(rig.cur.mode) and rig.cur.nlink > 1:
102 hlinks.del_path(rig.cur.name)
103 if not stat.S_ISDIR(pst.st_mode) and pst.st_nlink > 1:
104 hlinks.add_path(path, pst.st_dev, pst.st_ino)
105 meta = metadata.from_path(path, statinfo=pst)
106 # Clear these so they don't bloat the store -- they're
107 # already in the index (since they vary a lot and they're
108 # fixed length). If you've noticed "tmax", you might
109 # wonder why it's OK to do this, since that code may
110 # adjust (mangle) the index mtime and ctime -- producing
111 # fake values which must not end up in a .bupm. However,
112 # it looks like that shouldn't be possible: (1) When
113 # "save" validates the index entry, it always reads the
114 # metadata from the filesytem. (2) Metadata is only
115 # read/used from the index if hashvalid is true. (3) index
116 # always invalidates "faked" entries, because "old != new"
118 meta.ctime = meta.mtime = meta.atime = 0
119 meta_ofs = msw.store(meta)
120 rig.cur.from_stat(pst, meta_ofs, tstart,
121 check_device=opt.check_device)
122 if not (rig.cur.flags & index.IX_HASHVALID):
124 (rig.cur.gitmode, rig.cur.sha) = hashgen(path)
125 rig.cur.flags |= index.IX_HASHVALID
131 meta = metadata.from_path(path, statinfo=pst)
132 # See same assignment to 0, above, for rationale.
133 meta.atime = meta.mtime = meta.ctime = 0
134 meta_ofs = msw.store(meta)
135 wi.add(path, pst, meta_ofs, hashgen = hashgen)
136 if not stat.S_ISDIR(pst.st_mode) and pst.st_nlink > 1:
137 hlinks.add_path(path, pst.st_dev, pst.st_ino)
139 progress('Indexing: %d, done.\n' % total)
141 hlinks.prepare_save()
149 log('check: before merging: oldfile\n')
151 log('check: before merging: newfile\n')
153 mi = index.Writer(indexfile, msw, tmax)
155 for e in index.merge(ri, wr):
156 # FIXME: shouldn't we remove deleted entries eventually? When?
171 bup index <-p|m|s|u> [options...] <filenames...>
174 p,print print the index entries for the given names (also works with -u)
175 m,modified print only added/deleted/modified files (implies -p)
176 s,status print each filename with a status char (A/M/D) (implies -p)
177 u,update recursively update the index entries for the given file/dir names (default if no mode is specified)
178 check carefully check index file integrity
179 clear clear the index
181 H,hash print the hash for each object next to its name
182 l,long print more information about each file
183 no-check-device don't invalidate an entry if the containing device changes
184 fake-valid mark all index entries as up-to-date even if they aren't
185 fake-invalid mark all index entries as invalid
186 f,indexfile= the name of the index file (normally BUP_DIR/bupindex)
187 exclude= a path to exclude from the backup (can be used more than once)
188 exclude-from= a file that contains exclude paths (can be used more than once)
189 v,verbose increase log output (can be used more than once)
190 x,xdev,one-file-system don't cross filesystem boundaries
192 o = options.Options(optspec)
193 (opt, flags, extra) = o.parse(sys.argv[1:])
195 if not (opt.modified or \
202 if (opt.fake_valid or opt.fake_invalid) and not opt.update:
203 o.fatal('--fake-{in,}valid are meaningless without -u')
204 if opt.fake_valid and opt.fake_invalid:
205 o.fatal('--fake-valid is incompatible with --fake-invalid')
207 # FIXME: remove this once we account for timestamp races, i.e. index;
208 # touch new-file; index. It's possible for this to happen quickly
209 # enough that new-file ends up with the same timestamp as the first
210 # index, and then bup will ignore it.
211 tick_start = time.time()
212 time.sleep(1 - (tick_start - int(tick_start)))
214 git.check_repo_or_die()
215 indexfile = opt.indexfile or git.repo('bupindex')
220 log('check: starting initial check.\n')
221 check_index(index.Reader(indexfile))
224 log('clear: clearing index.\n')
225 clear_index(indexfile)
227 excluded_paths = parse_excludes(flags, o.fatal)
228 paths = index.reduce_paths(extra)
232 o.fatal('update mode (-u) requested but no paths given')
233 for (rp,path) in paths:
234 update_index(rp, excluded_paths)
236 if opt['print'] or opt.status or opt.modified:
237 for (name, ent) in index.Reader(indexfile).filter(extra or ['']):
239 and (ent.is_valid() or ent.is_deleted() or not ent.mode)):
245 elif not ent.is_valid():
246 if ent.sha == index.EMPTY_SHA:
253 line += ent.sha.encode('hex') + ' '
255 line += "%7s %7s " % (oct(ent.mode), oct(ent.gitmode))
256 print line + (name or './')
258 if opt.check and (opt['print'] or opt.status or opt.modified or opt.update):
259 log('check: starting final check.\n')
260 check_index(index.Reader(indexfile))
263 log('WARNING: %d errors encountered.\n' % len(saved_errors))