ref: 75990fc71960d16227e94817d122631f53408c74
dir: /sys/lib/python/mercurial/verify.py/
# 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 version 2, incorporated herein by reference.
from node import nullid, short
from i18n import _
import revlog, util, error
def verify(repo):
lock = repo.lock()
try:
return _verify(repo)
finally:
lock.release()
def _verify(repo):
mflinkrevs = {}
filelinkrevs = {}
filenodes = {}
revisions = 0
badrevs = set()
errors = [0]
warnings = [0]
ui = repo.ui
cl = repo.changelog
mf = repo.manifest
if not repo.cancopy():
raise util.Abort(_("cannot verify bundle or remote repos"))
def err(linkrev, msg, filename=None):
if linkrev != None:
badrevs.add(linkrev)
else:
linkrev = '?'
msg = "%s: %s" % (linkrev, msg)
if filename:
msg = "%s@%s" % (filename, msg)
ui.warn(" " + msg + "\n")
errors[0] += 1
def exc(linkrev, msg, inst, filename=None):
if isinstance(inst, KeyboardInterrupt):
ui.warn(_("interrupted"))
raise
err(linkrev, "%s: %s" % (msg, inst), filename)
def warn(msg):
ui.warn(msg + "\n")
warnings[0] += 1
def checklog(obj, name, linkrev):
if not len(obj) and (havecl or havemf):
err(linkrev, _("empty or missing %s") % name)
return
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)
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)
def checkentry(obj, i, node, seen, linkrevs, f):
lr = obj.linkrev(obj.rev(node))
if lr < 0 or (havecl and lr not in linkrevs):
if lr < 0 or lr >= len(cl):
msg = _("rev %d points to nonexistent changeset %d")
else:
msg = _("rev %d points to unexpected changeset %d")
err(None, msg % (i, lr), f)
if linkrevs:
warn(_(" (expected %s)") % " ".join(map(str, linkrevs)))
lr = None # can't be trusted
try:
p1, p2 = obj.parents(node)
if p1 not in seen and p1 != nullid:
err(lr, _("unknown parent 1 %s of %s") %
(short(p1), short(n)), f)
if p2 not in seen and p2 != nullid:
err(lr, _("unknown parent 2 %s of %s") %
(short(p2), short(p1)), f)
except Exception, inst:
exc(lr, _("checking parents of %s") % short(node), inst, f)
if node in seen:
err(lr, _("duplicate revision %d (%d)") % (i, seen[n]), f)
seen[n] = i
return lr
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 = len(cl) > 0
havemf = len(mf) > 0
ui.status(_("checking changesets\n"))
seen = {}
checklog(cl, "changelog", 0)
for i in repo:
n = cl.node(i)
checkentry(cl, i, n, seen, [i], "changelog")
try:
changes = cl.read(n)
mflinkrevs.setdefault(changes[0], []).append(i)
for f in changes[3]:
filelinkrevs.setdefault(f, []).append(i)
except Exception, inst:
exc(i, _("unpacking changeset %s") % short(n), inst)
ui.status(_("checking manifests\n"))
seen = {}
checklog(mf, "manifest", 0)
for i in mf:
n = mf.node(i)
lr = checkentry(mf, i, n, seen, mflinkrevs.get(n, []), "manifest")
if n in mflinkrevs:
del mflinkrevs[n]
else:
err(lr, _("%s not in changesets") % short(n), "manifest")
try:
for f, fn in mf.readdelta(n).iteritems():
if not f:
err(lr, _("file without name in manifest"))
elif f != "/dev/null":
fns = filenodes.setdefault(f, {})
if fn not in fns:
fns[fn] = i
except Exception, inst:
exc(lr, _("reading manifest delta %s") % short(n), inst)
ui.status(_("crosschecking files in changesets and manifests\n"))
if havemf:
for c,m in sorted([(c, m) for m in mflinkrevs for c in mflinkrevs[m]]):
err(c, _("changeset refers to unknown manifest %s") % short(m))
mflinkrevs = None # del is bad here due to scope issues
for f in sorted(filelinkrevs):
if f not in filenodes:
lr = filelinkrevs[f][0]
err(lr, _("in changeset but not in manifest"), f)
if havecl:
for f in sorted(filenodes):
if f not in filelinkrevs:
try:
fl = repo.file(f)
lr = min([fl.linkrev(fl.rev(n)) for n in filenodes[f]])
except:
lr = None
err(lr, _("in manifest but not in changeset"), f)
ui.status(_("checking files\n"))
storefiles = set()
for f, f2, size in repo.store.datafiles():
if not f:
err(None, _("cannot decode filename '%s'") % f2)
elif size > 0:
storefiles.add(f)
files = sorted(set(filenodes) | set(filelinkrevs))
for f in files:
try:
linkrevs = filelinkrevs[f]
except KeyError:
# in manifest but not in changelog
linkrevs = []
if linkrevs:
lr = linkrevs[0]
else:
lr = None
try:
fl = repo.file(f)
except error.RevlogError, e:
err(lr, _("broken revlog! (%s)") % e, f)
continue
for ff in fl.files():
try:
storefiles.remove(ff)
except KeyError:
err(lr, _("missing revlog!"), ff)
checklog(fl, f, lr)
seen = {}
for i in fl:
revisions += 1
n = fl.node(i)
lr = checkentry(fl, i, n, seen, linkrevs, f)
if f in filenodes:
if havemf and n not in filenodes[f]:
err(lr, _("%s not in manifests") % (short(n)), f)
else:
del filenodes[f][n]
# verify contents
try:
t = fl.read(n)
rp = fl.renamed(n)
if len(t) != fl.size(i):
if len(fl.revision(n)) != fl.size(i):
err(lr, _("unpacked size is %s, %s expected") %
(len(t), fl.size(i)), f)
except Exception, inst:
exc(lr, _("unpacking %s") % short(n), inst, f)
# check renames
try:
if rp:
fl2 = repo.file(rp[0])
if not len(fl2):
err(lr, _("empty or missing copy source revlog %s:%s")
% (rp[0], short(rp[1])), f)
elif rp[1] == nullid:
ui.note(_("warning: %s@%s: copy source"
" revision is nullid %s:%s\n")
% (f, lr, rp[0], short(rp[1])))
else:
fl2.rev(rp[1])
except Exception, inst:
exc(lr, _("checking rename of %s") % short(n), inst, f)
# cross-check
if f in filenodes:
fns = [(mf.linkrev(l), n) for n,l in filenodes[f].iteritems()]
for lr, node in sorted(fns):
err(lr, _("%s in manifests not found") % short(node), f)
for f in storefiles:
warn(_("warning: orphan revlog '%s'") % f)
ui.status(_("%d files, %d changesets, %d total revisions\n") %
(len(files), len(cl), 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 badrevs:
ui.warn(_("(first damaged changeset appears to be %d)\n")
% min(badrevs))
return 1