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# verify.py - repository integrity checking for Mercurial
#
# Copyright 2006, 2007 Matt Mackall <mpm@selenic.com>
#
# This software may be used and distributed according to the terms
# of the GNU General Public License, incorporated herein by reference.
from node import *
from i18n import _
import revlog
def verify(repo):
lock = repo.lock()
try:
return _verify(repo)
finally:
del lock
def _verify(repo):
filelinkrevs = {}
filenodes = {}
changesets = revisions = files = 0
firstbad = [None]
errors = [0]
warnings = [0]
neededmanifests = {}
def err(linkrev, msg, filename=None):
if linkrev != None:
if firstbad[0] != None:
firstbad[0] = min(firstbad[0], linkrev)
else:
firstbad[0] = linkrev
else:
linkrev = "?"
msg = "%s: %s" % (linkrev, msg)
if filename:
msg = "%s@%s" % (filename, msg)
repo.ui.warn(" " + msg + "\n")
errors[0] += 1
def warn(msg):
repo.ui.warn(msg + "\n")
warnings[0] += 1
def checksize(obj, name):
d = obj.checksize()
if d[0]:
err(None, _("data length off by %d bytes") % d[0], name)
if d[1]:
err(None, _("index contains %d extra bytes") % d[1], name)
def checkversion(obj, name):
if obj.version != revlog.REVLOGV0:
if not revlogv1:
warn(_("warning: `%s' uses revlog format 1") % name)
elif revlogv1:
warn(_("warning: `%s' uses revlog format 0") % name)
revlogv1 = repo.changelog.version != revlog.REVLOGV0
if repo.ui.verbose or not revlogv1:
repo.ui.status(_("repository uses revlog format %d\n") %
(revlogv1 and 1 or 0))
seen = {}
repo.ui.status(_("checking changesets\n"))
checksize(repo.changelog, "changelog")
for i in xrange(repo.changelog.count()):
changesets += 1
n = repo.changelog.node(i)
l = repo.changelog.linkrev(n)
if l != i:
err(i, _("incorrect link (%d) for changeset") %(l))
if n in seen:
err(i, _("duplicates changeset at revision %d") % seen[n])
seen[n] = i
for p in repo.changelog.parents(n):
if p not in repo.changelog.nodemap:
err(i, _("changeset has unknown parent %s") % short(p))
try:
changes = repo.changelog.read(n)
except KeyboardInterrupt:
repo.ui.warn(_("interrupted"))
raise
except Exception, inst:
err(i, _("unpacking changeset: %s") % inst)
continue
if changes[0] not in neededmanifests:
neededmanifests[changes[0]] = i
for f in changes[3]:
filelinkrevs.setdefault(f, []).append(i)
seen = {}
repo.ui.status(_("checking manifests\n"))
checkversion(repo.manifest, "manifest")
checksize(repo.manifest, "manifest")
for i in xrange(repo.manifest.count()):
n = repo.manifest.node(i)
l = repo.manifest.linkrev(n)
if l < 0 or l >= repo.changelog.count():
err(None, _("bad link (%d) at manifest revision %d") % (l, i))
if n in neededmanifests:
del neededmanifests[n]
if n in seen:
err(l, _("duplicates manifest from %d") % seen[n])
seen[n] = l
for p in repo.manifest.parents(n):
if p not in repo.manifest.nodemap:
err(l, _("manifest has unknown parent %s") % short(p))
try:
for f, fn in repo.manifest.readdelta(n).iteritems():
fns = filenodes.setdefault(f, {})
if fn not in fns:
fns[fn] = n
except KeyboardInterrupt:
repo.ui.warn(_("interrupted"))
raise
except Exception, inst:
err(l, _("reading manifest delta: %s") % inst)
continue
repo.ui.status(_("crosschecking files in changesets and manifests\n"))
nm = neededmanifests.items()
nm.sort()
for m, c in nm:
err(m, _("changeset refers to unknown manifest %s") % short(c))
del neededmanifests, nm
for f in filenodes:
if f not in filelinkrevs:
lrs = [repo.manifest.linkrev(n) for n in filenodes[f]]
lrs.sort()
err(lrs[0], _("in manifest but not in changeset"), f)
for f in filelinkrevs:
if f not in filenodes:
lr = filelinkrevs[f][0]
err(lr, _("in changeset but not in manifest"), f)
repo.ui.status(_("checking files\n"))
ff = filenodes.keys()
ff.sort()
for f in ff:
if f == "/dev/null":
continue
files += 1
if not f:
lr = repo.manifest.linkrev(filenodes[f][0])
err(lr, _("file without name in manifest %s") % short(ff[n]))
continue
fl = repo.file(f)
checkversion(fl, f)
checksize(fl, f)
seen = {}
nodes = {nullid: 1}
for i in xrange(fl.count()):
revisions += 1
n = fl.node(i)
flr = fl.linkrev(n)
if flr not in filelinkrevs.get(f, []):
if flr < 0 or flr >= repo.changelog.count():
err(None, _("rev %d point to nonexistent changeset %d")
% (i, flr), f)
else:
err(None, _("rev %d points to unexpected changeset %d")
% (i, flr), f)
if f in filelinkrevs:
warn(_(" (expected %s)") % filelinkrevs[f][0])
flr = None # can't be trusted
else:
filelinkrevs[f].remove(flr)
if n in seen:
err(flr, _("duplicate revision %d") % i, f)
if n not in filenodes[f]:
err(flr, _("%s not in manifests") % (short(n)), f)
else:
del filenodes[f][n]
# verify contents
try:
t = fl.read(n)
except KeyboardInterrupt:
repo.ui.warn(_("interrupted"))
raise
except Exception, inst:
err(flr, _("unpacking %s: %s") % (short(n), inst), f)
# verify parents
try:
(p1, p2) = fl.parents(n)
if p1 not in nodes:
err(flr, _("unknown parent 1 %s of %s") %
(short(p1), short(n)), f)
if p2 not in nodes:
err(flr, _("unknown parent 2 %s of %s") %
(short(p2), short(p1)), f)
except KeyboardInterrupt:
repo.ui.warn(_("interrupted"))
raise
except Exception, inst:
err(flr, _("checking parents of %s: %s") % (short(n), inst), f)
nodes[n] = 1
# check renames
try:
rp = fl.renamed(n)
if rp:
fl2 = repo.file(rp[0])
rev = fl2.rev(rp[1])
except KeyboardInterrupt:
repo.ui.warn(_("interrupted"))
raise
except Exception, inst:
err(flr, _("checking rename of %s: %s") %
(short(n), inst), f)
# cross-check
fns = [(repo.manifest.linkrev(filenodes[f][n]), n)
for n in filenodes[f]]
fns.sort()
for lr, node in fns:
err(lr, _("%s in manifests not found") % short(node), f)
repo.ui.status(_("%d files, %d changesets, %d total revisions\n") %
(files, changesets, revisions))
if warnings[0]:
repo.ui.warn(_("%d warnings encountered!\n") % warnings[0])
if errors[0]:
repo.ui.warn(_("%d integrity errors encountered!\n") % errors[0])
if firstbad[0]:
repo.ui.warn(_("(first damaged changeset appears to be %d)\n")
% firstbad[0])
return 1
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