# 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 nullid, short
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 = {}
ui = repo.ui
cl = repo.changelog
mf = repo.manifest
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)
ui.warn(" " + msg + "\n")
errors[0] += 1
def warn(msg):
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 = cl.version != revlog.REVLOGV0
if ui.verbose or not revlogv1:
ui.status(_("repository uses revlog format %d\n") %
(revlogv1 and 1 or 0))
havecl = havemf = 1
seen = {}
ui.status(_("checking changesets\n"))
if not len(cl) and len(mf):
havecl = 0
err(0, _("empty or missing 00changelog.i"))
else:
checksize(cl, "changelog")
for i in repo:
changesets += 1
n = cl.node(i)
l = cl.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 cl.parents(n):
if p not in cl.nodemap:
err(i, _("changeset has unknown parent %s") % short(p))
try:
changes = cl.read(n)
except KeyboardInterrupt:
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 = {}
ui.status(_("checking manifests\n"))
if len(cl) and not len(mf):
havemf = 0
err(0, _("empty or missing 00manifest.i"))
else:
checkversion(mf, "manifest")
checksize(mf, "manifest")
for i in mf:
n = mf.node(i)
l = mf.linkrev(n)
if l < 0 or (havecl and l >= len(cl)):
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 mf.parents(n):
if p not in mf.nodemap:
err(l, _("manifest has unknown parent %s") % short(p))
try:
for f, fn in mf.readdelta(n).iteritems():
fns = filenodes.setdefault(f, {})
if fn not in fns:
fns[fn] = n
except KeyboardInterrupt:
ui.warn(_("interrupted"))
raise
except Exception, inst:
err(l, _("reading manifest delta: %s") % inst)
continue
ui.status(_("crosschecking files in changesets and manifests\n"))
if havemf > 0:
nm = [(c, m) for m, c in neededmanifests.items()]
nm.sort()
for c, m in nm:
err(c, _("changeset refers to unknown manifest %s") % short(m))
del neededmanifests, nm
if havecl:
fl = filenodes.keys()
fl.sort()
for f in fl:
if f not in filelinkrevs:
lrs = [mf.linkrev(n) for n in filenodes[f]]
lrs.sort()
err(lrs[0], _("in manifest but not in changeset"), f)
del fl
if havemf:
fl = filelinkrevs.keys()
fl.sort()
for f in fl:
if f not in filenodes:
lr = filelinkrevs[f][0]
err(lr, _("in changeset but not in manifest"), f)
del fl
ui.status(_("checking files\n"))
ff = dict.fromkeys(filenodes.keys() + filelinkrevs.keys()).keys()
ff.sort()
for f in ff:
if f == "/dev/null":
continue
files += 1
if not f:
lr = filelinkrevs[f][0]
err(lr, _("file without name in manifest"))
continue
fl = repo.file(f)
checkversion(fl, f)
checksize(fl, f)
if not len(fl):
err(filelinkrevs[f][0], _("empty or missing revlog"), f)
continue
seen = {}
nodes = {nullid: 1}
for i in fl:
revisions += 1
n = fl.node(i)
flr = fl.linkrev(n)
if flr < 0 or (havecl and flr not in filelinkrevs.get(f, [])):
if flr < 0 or flr >= len(repo):
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:
if havecl:
filelinkrevs[f].remove(flr)
if n in seen:
err(flr, _("duplicate revision %d") % i, f)
if f in filenodes:
if havemf and 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:
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:
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])
if not len(fl2):
err(flr, _("empty or missing copy source revlog %s:%s")
% (rp[0], short(rp[1])), f)
elif rp[1] == nullid:
err(flr, _("copy source revision is nullid %s:%s")
% (rp[0], short(rp[1])), f)
else:
rev = fl2.rev(rp[1])
except KeyboardInterrupt:
ui.warn(_("interrupted"))
raise
except Exception, inst:
err(flr, _("checking rename of %s: %s") %
(short(n), inst), f)
# cross-check
if f in filenodes:
fns = [(mf.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)
ui.status(_("%d files, %d changesets, %d total revisions\n") %
(files, changesets, revisions))
if warnings[0]:
ui.warn(_("%d warnings encountered!\n") % warnings[0])
if errors[0]:
ui.warn(_("%d integrity errors encountered!\n") % errors[0])
if firstbad[0]:
ui.warn(_("(first damaged changeset appears to be %d)\n")
% firstbad[0])
return 1