mirror of
https://github.com/facebook/sapling.git
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61149c5496
_verifychangelog() and _verifymanifest() accept dictionaries that they populate. We pass in empty dictionaries, so it's clearer to create them in the functions and return them.
388 lines
14 KiB
Python
388 lines
14 KiB
Python
# 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 or any later version.
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from __future__ import absolute_import
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import os
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from .i18n import _
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from .node import (
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nullid,
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short,
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)
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from . import (
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error,
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revlog,
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util,
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)
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def verify(repo):
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lock = repo.lock()
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try:
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return verifier(repo).verify()
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finally:
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lock.release()
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def _normpath(f):
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# under hg < 2.4, convert didn't sanitize paths properly, so a
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# converted repo may contain repeated slashes
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while '//' in f:
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f = f.replace('//', '/')
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return f
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def _validpath(repo, path):
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"""Returns False if a path should NOT be treated as part of a repo.
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For all in-core cases, this returns True, as we have no way for a
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path to be mentioned in the history but not actually be
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relevant. For narrow clones, this is important because many
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filelogs will be missing, and changelog entries may mention
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modified files that are outside the narrow scope.
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"""
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return True
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class verifier(object):
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def __init__(self, repo):
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self.repo = repo.unfiltered()
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self.ui = repo.ui
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self.badrevs = set()
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self.errors = 0
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self.warnings = 0
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self.havecl = len(repo.changelog) > 0
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self.havemf = len(repo.manifest) > 0
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self.revlogv1 = repo.changelog.version != revlog.REVLOGV0
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self.lrugetctx = util.lrucachefunc(repo.changectx)
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self.refersmf = False
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self.fncachewarned = False
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def warn(self, msg):
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self.ui.warn(msg + "\n")
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self.warnings += 1
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def err(self, linkrev, msg, filename=None):
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if linkrev is not None:
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self.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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self.ui.warn(" " + msg + "\n")
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self.errors += 1
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def exc(self, linkrev, msg, inst, filename=None):
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if not str(inst):
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inst = repr(inst)
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self.err(linkrev, "%s: %s" % (msg, inst), filename)
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def checklog(self, obj, name, linkrev):
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if not len(obj) and (self.havecl or self.havemf):
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self.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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self.err(None, _("data length off by %d bytes") % d[0], name)
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if d[1]:
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self.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 self.revlogv1:
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self.warn(_("warning: `%s' uses revlog format 1") % name)
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elif self.revlogv1:
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self.warn(_("warning: `%s' uses revlog format 0") % name)
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def checkentry(self, obj, i, node, seen, linkrevs, f):
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lr = obj.linkrev(obj.rev(node))
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if lr < 0 or (self.havecl and lr not in linkrevs):
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if lr < 0 or lr >= len(self.repo.changelog):
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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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self.err(None, msg % (i, lr), f)
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if linkrevs:
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if f and len(linkrevs) > 1:
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try:
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# attempt to filter down to real linkrevs
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linkrevs = [l for l in linkrevs
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if self.lrugetctx(l)[f].filenode() == node]
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except Exception:
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pass
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self.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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self.err(lr, _("unknown parent 1 %s of %s") %
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(short(p1), short(node)), f)
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if p2 not in seen and p2 != nullid:
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self.err(lr, _("unknown parent 2 %s of %s") %
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(short(p2), short(node)), f)
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except Exception as inst:
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self.exc(lr, _("checking parents of %s") % short(node), inst, f)
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if node in seen:
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self.err(lr, _("duplicate revision %d (%d)") % (i, seen[node]), f)
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seen[node] = i
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return lr
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def verify(self):
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repo = self.repo
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ui = repo.ui
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if not repo.url().startswith('file:'):
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raise error.Abort(_("cannot verify bundle or remote repos"))
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if os.path.exists(repo.sjoin("journal")):
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ui.warn(_("abandoned transaction found - run hg recover\n"))
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if ui.verbose or not self.revlogv1:
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ui.status(_("repository uses revlog format %d\n") %
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(self.revlogv1 and 1 or 0))
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mflinkrevs, filelinkrevs = self._verifychangelog()
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filenodes = self._verifymanifest(mflinkrevs)
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self._crosscheckfiles(mflinkrevs, filelinkrevs, filenodes)
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totalfiles, filerevisions = self._verifyfiles(filenodes, filelinkrevs)
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ui.status(_("%d files, %d changesets, %d total revisions\n") %
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(totalfiles, len(repo.changelog), filerevisions))
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if self.warnings:
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ui.warn(_("%d warnings encountered!\n") % self.warnings)
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if self.fncachewarned:
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ui.warn(_('hint: run "hg debugrebuildfncache" to recover from '
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'corrupt fncache\n'))
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if self.errors:
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ui.warn(_("%d integrity errors encountered!\n") % self.errors)
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if self.badrevs:
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ui.warn(_("(first damaged changeset appears to be %d)\n")
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% min(self.badrevs))
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return 1
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def _verifychangelog(self):
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ui = self.ui
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repo = self.repo
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cl = repo.changelog
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ui.status(_("checking changesets\n"))
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mflinkrevs = {}
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filelinkrevs = {}
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seen = {}
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self.checklog(cl, "changelog", 0)
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total = len(repo)
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for i in repo:
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ui.progress(_('checking'), i, total=total, unit=_('changesets'))
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n = cl.node(i)
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self.checkentry(cl, i, n, seen, [i], "changelog")
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try:
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changes = cl.read(n)
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if changes[0] != nullid:
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mflinkrevs.setdefault(changes[0], []).append(i)
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self.refersmf = True
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for f in changes[3]:
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if _validpath(repo, f):
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filelinkrevs.setdefault(_normpath(f), []).append(i)
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except Exception as inst:
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self.refersmf = True
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self.exc(i, _("unpacking changeset %s") % short(n), inst)
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ui.progress(_('checking'), None)
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return mflinkrevs, filelinkrevs
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def _verifymanifest(self, mflinkrevs):
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repo = self.repo
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ui = self.ui
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mf = self.repo.manifest
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ui.status(_("checking manifests\n"))
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filenodes = {}
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seen = {}
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if self.refersmf:
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# Do not check manifest if there are only changelog entries with
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# null manifests.
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self.checklog(mf, "manifest", 0)
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total = len(mf)
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for i in mf:
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ui.progress(_('checking'), i, total=total, unit=_('manifests'))
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n = mf.node(i)
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lr = self.checkentry(mf, i, n, seen, mflinkrevs.get(n, []),
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"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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self.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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self.err(lr, _("file without name in manifest"))
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elif f != "/dev/null": # ignore this in very old repos
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if _validpath(repo, f):
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filenodes.setdefault(
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_normpath(f), {}).setdefault(fn, lr)
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except Exception as inst:
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self.exc(lr, _("reading manifest delta %s") % short(n), inst)
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ui.progress(_('checking'), None)
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return filenodes
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def _crosscheckfiles(self, mflinkrevs, filelinkrevs, filenodes):
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repo = self.repo
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ui = self.ui
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ui.status(_("crosschecking files in changesets and manifests\n"))
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total = len(mflinkrevs) + len(filelinkrevs) + len(filenodes)
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count = 0
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if self.havemf:
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for c, m in sorted([(c, m) for m in mflinkrevs
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for c in mflinkrevs[m]]):
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count += 1
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if m == nullid:
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continue
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ui.progress(_('crosschecking'), count, total=total)
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self.err(c, _("changeset refers to unknown manifest %s") %
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short(m))
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mflinkrevs = None # del is bad here due to scope issues
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for f in sorted(filelinkrevs):
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count += 1
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ui.progress(_('crosschecking'), count, total=total)
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if f not in filenodes:
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lr = filelinkrevs[f][0]
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self.err(lr, _("in changeset but not in manifest"), f)
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if self.havecl:
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for f in sorted(filenodes):
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count += 1
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ui.progress(_('crosschecking'), count, total=total)
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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 Exception:
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lr = None
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self.err(lr, _("in manifest but not in changeset"), f)
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ui.progress(_('crosschecking'), None)
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def _verifyfiles(self, filenodes, filelinkrevs):
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repo = self.repo
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ui = self.ui
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lrugetctx = self.lrugetctx
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revlogv1 = self.revlogv1
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havemf = self.havemf
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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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self.err(None, _("cannot decode filename '%s'") % f2)
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elif size > 0 or not revlogv1:
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storefiles.add(_normpath(f))
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files = sorted(set(filenodes) | set(filelinkrevs))
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total = len(files)
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revisions = 0
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for i, f in enumerate(files):
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ui.progress(_('checking'), i, item=f, total=total)
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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 as e:
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self.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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self.warn(_(" warning: revlog '%s' not in fncache!") % ff)
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self.fncachewarned = True
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self.checklog(fl, f, lr)
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seen = {}
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rp = None
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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 = self.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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self.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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l = len(fl.read(n))
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rp = fl.renamed(n)
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if l != fl.size(i):
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if len(fl.revision(n)) != fl.size(i):
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self.err(lr, _("unpacked size is %s, %s expected") %
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(l, fl.size(i)), f)
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except error.CensoredNodeError:
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# experimental config: censor.policy
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if ui.config("censor", "policy", "abort") == "abort":
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self.err(lr, _("censored file data"), f)
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except Exception as inst:
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self.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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if lr is not None and ui.verbose:
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ctx = lrugetctx(lr)
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found = False
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for pctx in ctx.parents():
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if rp[0] in pctx:
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found = True
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break
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if not found:
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self.warn(_("warning: copy source of '%s' not"
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" in parents of %s") % (f, ctx))
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fl2 = repo.file(rp[0])
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if not len(fl2):
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self.err(lr, _("empty or missing copy source "
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"revlog %s:%s") % (rp[0], short(rp[1])), f)
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elif rp[1] == nullid:
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ui.note(_("warning: %s@%s: copy source"
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" revision is nullid %s:%s\n")
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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 as inst:
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self.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 = [(lr, n) for n, lr in filenodes[f].iteritems()]
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for lr, node in sorted(fns):
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self.err(lr, _("%s in manifests not found") % short(node),
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f)
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ui.progress(_('checking'), None)
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for f in storefiles:
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self.warn(_("warning: orphan revlog '%s'") % f)
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return len(files), revisions
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