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# verify.py - repository integrity checking for Mercurial
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#
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# Copyright 2006, 2007 Matt Mackall <mpm@selenic.com>
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#
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# This software may be used and distributed according to the terms of the
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# GNU General Public License version 2, incorporated herein by reference.
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from node import nullid, short
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from i18n import _
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import revlog, util, error
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def verify(repo):
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lock = repo.lock()
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try:
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return _verify(repo)
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finally:
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lock.release()
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def _verify(repo):
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mflinkrevs = {}
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filelinkrevs = {}
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filenodes = {}
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revisions = 0
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badrevs = set()
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errors = [0]
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warnings = [0]
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ui = repo.ui
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cl = repo.changelog
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mf = repo.manifest
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if not repo.cancopy():
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raise util.Abort(_("cannot verify bundle or remote repos"))
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def err(linkrev, msg, filename=None):
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if linkrev != None:
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badrevs.add(linkrev)
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else:
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linkrev = '?'
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msg = "%s: %s" % (linkrev, msg)
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if filename:
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msg = "%s@%s" % (filename, msg)
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ui.warn(" " + msg + "\n")
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errors[0] += 1
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def exc(linkrev, msg, inst, filename=None):
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if isinstance(inst, KeyboardInterrupt):
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ui.warn(_("interrupted"))
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raise
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err(linkrev, "%s: %s" % (msg, inst), filename)
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def warn(msg):
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ui.warn(msg + "\n")
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warnings[0] += 1
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def checklog(obj, name, linkrev):
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if not len(obj) and (havecl or havemf):
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err(linkrev, _("empty or missing %s") % name)
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return
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d = obj.checksize()
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if d[0]:
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err(None, _("data length off by %d bytes") % d[0], name)
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if d[1]:
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err(None, _("index contains %d extra bytes") % d[1], name)
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if obj.version != revlog.REVLOGV0:
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if not revlogv1:
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warn(_("warning: `%s' uses revlog format 1") % name)
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elif revlogv1:
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warn(_("warning: `%s' uses revlog format 0") % name)
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def checkentry(obj, i, node, seen, linkrevs, f):
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lr = obj.linkrev(obj.rev(node))
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if lr < 0 or (havecl and lr not in linkrevs):
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if lr < 0 or lr >= len(cl):
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msg = _("rev %d points to nonexistent changeset %d")
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else:
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msg = _("rev %d points to unexpected changeset %d")
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err(None, msg % (i, lr), f)
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if linkrevs:
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warn(_(" (expected %s)") % " ".join(map(str,linkrevs)))
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lr = None # can't be trusted
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try:
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p1, p2 = obj.parents(node)
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if p1 not in seen and p1 != nullid:
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err(lr, _("unknown parent 1 %s of %s") %
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(short(p1), short(n)), f)
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if p2 not in seen and p2 != nullid:
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err(lr, _("unknown parent 2 %s of %s") %
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(short(p2), short(p1)), f)
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except Exception, inst:
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exc(lr, _("checking parents of %s") % short(node), inst, f)
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if node in seen:
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err(lr, _("duplicate revision %d (%d)") % (i, seen[n]), f)
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seen[n] = i
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return lr
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revlogv1 = cl.version != revlog.REVLOGV0
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if ui.verbose or not revlogv1:
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ui.status(_("repository uses revlog format %d\n") %
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(revlogv1 and 1 or 0))
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havecl = len(cl) > 0
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havemf = len(mf) > 0
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ui.status(_("checking changesets\n"))
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seen = {}
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checklog(cl, "changelog", 0)
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for i in repo:
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n = cl.node(i)
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checkentry(cl, i, n, seen, [i], "changelog")
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try:
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changes = cl.read(n)
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mflinkrevs.setdefault(changes[0], []).append(i)
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for f in changes[3]:
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filelinkrevs.setdefault(f, []).append(i)
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except Exception, inst:
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exc(i, _("unpacking changeset %s") % short(n), inst)
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ui.status(_("checking manifests\n"))
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seen = {}
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checklog(mf, "manifest", 0)
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for i in mf:
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n = mf.node(i)
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lr = checkentry(mf, i, n, seen, mflinkrevs.get(n, []), "manifest")
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if n in mflinkrevs:
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del mflinkrevs[n]
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else:
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err(lr, _("%s not in changesets") % short(n), "manifest")
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try:
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for f, fn in mf.readdelta(n).iteritems():
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if not f:
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err(lr, _("file without name in manifest"))
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elif f != "/dev/null":
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fns = filenodes.setdefault(f, {})
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if fn not in fns:
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fns[fn] = i
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except Exception, inst:
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exc(lr, _("reading manifest delta %s") % short(n), inst)
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ui.status(_("crosschecking files in changesets and manifests\n"))
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if havemf:
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for c,m in sorted([(c, m) for m in mflinkrevs for c in mflinkrevs[m]]):
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err(c, _("changeset refers to unknown manifest %s") % short(m))
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del mflinkrevs
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for f in sorted(filelinkrevs):
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if f not in filenodes:
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lr = filelinkrevs[f][0]
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err(lr, _("in changeset but not in manifest"), f)
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if havecl:
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for f in sorted(filenodes):
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if f not in filelinkrevs:
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try:
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fl = repo.file(f)
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lr = min([fl.linkrev(fl.rev(n)) for n in filenodes[f]])
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except:
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lr = None
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err(lr, _("in manifest but not in changeset"), f)
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ui.status(_("checking files\n"))
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storefiles = set()
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for f, f2, size in repo.store.datafiles():
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if not f:
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err(None, _("cannot decode filename '%s'") % f2)
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elif size > 0:
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storefiles.add(f)
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files = sorted(set(filenodes) | set(filelinkrevs))
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for f in files:
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try:
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linkrevs = filelinkrevs[f]
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except KeyError:
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# in manifest but not in changelog
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linkrevs = []
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if linkrevs:
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lr = linkrevs[0]
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else:
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lr = None
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try:
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fl = repo.file(f)
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except error.RevlogError, e:
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err(lr, _("broken revlog! (%s)") % e, f)
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continue
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for ff in fl.files():
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try:
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storefiles.remove(ff)
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except KeyError:
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err(lr, _("missing revlog!"), ff)
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checklog(fl, f, lr)
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seen = {}
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for i in fl:
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revisions += 1
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n = fl.node(i)
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lr = checkentry(fl, i, n, seen, linkrevs, f)
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if f in filenodes:
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if havemf and n not in filenodes[f]:
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err(lr, _("%s not in manifests") % (short(n)), f)
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else:
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del filenodes[f][n]
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# verify contents
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try:
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t = fl.read(n)
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rp = fl.renamed(n)
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if len(t) != fl.size(i):
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if len(fl.revision(n)) != fl.size(i):
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err(lr, _("unpacked size is %s, %s expected") %
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(len(t), fl.size(i)), f)
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except Exception, inst:
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exc(lr, _("unpacking %s") % short(n), inst, f)
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# check renames
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try:
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if rp:
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fl2 = repo.file(rp[0])
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if not len(fl2):
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err(lr, _("empty or missing copy source revlog %s:%s")
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% (rp[0], short(rp[1])), f)
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elif rp[1] == nullid:
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warn(_("warning: %s@%s: copy source revision is nullid %s:%s")
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% (f, lr, rp[0], short(rp[1])))
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else:
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fl2.rev(rp[1])
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except Exception, inst:
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exc(lr, _("checking rename of %s") % short(n), inst, f)
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# cross-check
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if f in filenodes:
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fns = [(mf.linkrev(l), n) for n,l in filenodes[f].iteritems()]
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for lr, node in sorted(fns):
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err(lr, _("%s in manifests not found") % short(node), f)
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for f in storefiles:
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warn(_("warning: orphan revlog '%s'") % f)
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ui.status(_("%d files, %d changesets, %d total revisions\n") %
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(len(files), len(cl), revisions))
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if warnings[0]:
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ui.warn(_("%d warnings encountered!\n") % warnings[0])
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if errors[0]:
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ui.warn(_("%d integrity errors encountered!\n") % errors[0])
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if badrevs:
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ui.warn(_("(first damaged changeset appears to be %d)\n")
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% min(badrevs))
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return 1
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