# Unix SMB/CIFS implementation. # Copyright (C) Jelmer Vernooij 2005-2008 # Copyright (C) Martin Kuehl 2006 # # This is a Python port of the original in testprogs/ejs/samba3sam.js # # This program is free software; you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation; either version 3 of the License, or # (at your option) any later version. # # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # You should have received a copy of the GNU General Public License # along with this program. If not, see . # """Tests for the samba3sam LDB module, which maps Samba3 LDAP to AD LDAP.""" import os import ldb from ldb import SCOPE_DEFAULT, SCOPE_BASE from samba import Ldb, substitute_var from samba.tests import TestCaseInTempDir, env_loadparm import samba.dcerpc.security import samba.ndr from samba.auth import system_session from operator import attrgetter def read_datafile(filename): paths = [ "../../../../../testdata/samba3", "../../../../testdata/samba3" ] for p in paths: datadir = os.path.join(os.path.dirname(__file__), p) if os.path.exists(datadir): break return open(os.path.join(datadir, filename), 'r').read() def ldb_debug(l, text): print text class MapBaseTestCase(TestCaseInTempDir): """Base test case for mapping tests.""" def setup_modules(self, ldb, s3, s4): ldb.add({"dn": "@MAP=samba3sam", "@FROM": s4.basedn, "@TO": "sambaDomainName=TESTS," + s3.basedn}) ldb.add({"dn": "@MODULES", "@LIST": "rootdse,paged_results,server_sort,asq,samldb,password_hash,operational,objectguid,rdn_name,samba3sam,samba3sid,show_deleted,partition"}) ldb.add({"dn": "@PARTITION", "partition": ["%s" % (s4.basedn_casefold), "%s" % (s3.basedn_casefold)], "replicateEntries": ["@ATTRIBUTES", "@INDEXLIST"], "modules": "*:"}) def setUp(self): self.lp = env_loadparm() self.lp.set("workgroup", "TESTS") self.lp.set("netbios name", "TESTS") super(MapBaseTestCase, self).setUp() def make_dn(basedn, rdn): return "%s,sambaDomainName=TESTS,%s" % (rdn, basedn) def make_s4dn(basedn, rdn): return "%s,%s" % (rdn, basedn) self.ldbfile = os.path.join(self.tempdir, "test.ldb") self.ldburl = "tdb://" + self.ldbfile tempdir = self.tempdir class Target: """Simple helper class that contains data for a specific SAM connection.""" def __init__(self, basedn, dn, lp): self.db = Ldb(lp=lp, session_info=system_session()) self.db.set_opaque("skip_allocate_sids", "true"); self.basedn = basedn self.basedn_casefold = ldb.Dn(self.db, basedn).get_casefold() self.substvars = {"BASEDN": self.basedn} self.file = os.path.join(tempdir, "%s.ldb" % self.basedn_casefold) self.url = "tdb://" + self.file self._dn = dn def dn(self, rdn): return self._dn(self.basedn, rdn) def connect(self): return self.db.connect(self.url) def setup_data(self, path): self.add_ldif(read_datafile(path)) def subst(self, text): return substitute_var(text, self.substvars) def add_ldif(self, ldif): self.db.add_ldif(self.subst(ldif)) def modify_ldif(self, ldif): self.db.modify_ldif(self.subst(ldif)) self.samba4 = Target("dc=vernstok,dc=nl", make_s4dn, self.lp) self.samba3 = Target("cn=Samba3Sam", make_dn, self.lp) self.samba3.connect() self.samba4.connect() def tearDown(self): os.unlink(self.ldbfile) os.unlink(self.samba3.file) os.unlink(self.samba4.file) pdir = "%s.d" % self.ldbfile mdata = os.path.join(pdir, "metadata.tdb") if os.path.exists(mdata): os.unlink(mdata) os.rmdir(pdir) super(MapBaseTestCase, self).tearDown() def assertSidEquals(self, text, ndr_sid): sid_obj1 = samba.ndr.ndr_unpack(samba.dcerpc.security.dom_sid, str(ndr_sid[0])) sid_obj2 = samba.dcerpc.security.dom_sid(text) self.assertEquals(sid_obj1, sid_obj2) class Samba3SamTestCase(MapBaseTestCase): def setUp(self): super(Samba3SamTestCase, self).setUp() ldb = Ldb(self.ldburl, lp=self.lp, session_info=system_session()) ldb.set_opaque("skip_allocate_sids", "true"); self.samba3.setup_data("samba3.ldif") ldif = read_datafile("provision_samba3sam.ldif") ldb.add_ldif(self.samba4.subst(ldif)) self.setup_modules(ldb, self.samba3, self.samba4) del ldb self.ldb = Ldb(self.ldburl, lp=self.lp, session_info=system_session()) self.ldb.set_opaque("skip_allocate_sids", "true"); def test_search_non_mapped(self): """Looking up by non-mapped attribute""" msg = self.ldb.search(expression="(cn=Administrator)") self.assertEquals(len(msg), 1) self.assertEquals(msg[0]["cn"], "Administrator") def test_search_non_mapped(self): """Looking up by mapped attribute""" msg = self.ldb.search(expression="(name=Backup Operators)") self.assertEquals(len(msg), 1) self.assertEquals(str(msg[0]["name"]), "Backup Operators") def test_old_name_of_renamed(self): """Looking up by old name of renamed attribute""" msg = self.ldb.search(expression="(displayName=Backup Operators)") self.assertEquals(len(msg), 0) def test_mapped_containing_sid(self): """Looking up mapped entry containing SID""" msg = self.ldb.search(expression="(cn=Replicator)") self.assertEquals(len(msg), 1) self.assertEquals(str(msg[0].dn), "cn=Replicator,ou=Groups,dc=vernstok,dc=nl") self.assertTrue("objectSid" in msg[0]) self.assertSidEquals("S-1-5-21-4231626423-2410014848-2360679739-552", msg[0]["objectSid"]) oc = set(msg[0]["objectClass"]) self.assertEquals(oc, set(["group"])) def test_search_by_objclass(self): """Looking up by objectClass""" msg = self.ldb.search(expression="(|(objectClass=user)(cn=Administrator))") self.assertEquals(set([str(m.dn) for m in msg]), set(["unixName=Administrator,ou=Users,dc=vernstok,dc=nl", "unixName=nobody,ou=Users,dc=vernstok,dc=nl"])) def test_s3sam_modify(self): # Adding a record that will be fallbacked self.ldb.add({"dn": "cn=Foo", "foo": "bar", "blah": "Blie", "cn": "Foo", "showInAdvancedViewOnly": "TRUE"} ) # Checking for existence of record (local) # TODO: This record must be searched in the local database, which is # currently only supported for base searches # msg = ldb.search(expression="(cn=Foo)", ['foo','blah','cn','showInAdvancedViewOnly')] # TODO: Actually, this version should work as well but doesn't... # # msg = self.ldb.search(expression="(cn=Foo)", base="cn=Foo", scope=SCOPE_BASE, attrs=['foo','blah','cn','showInAdvancedViewOnly']) self.assertEquals(len(msg), 1) self.assertEquals(str(msg[0]["showInAdvancedViewOnly"]), "TRUE") self.assertEquals(str(msg[0]["foo"]), "bar") self.assertEquals(str(msg[0]["blah"]), "Blie") # Adding record that will be mapped self.ldb.add({"dn": "cn=Niemand,cn=Users,dc=vernstok,dc=nl", "objectClass": "user", "unixName": "bin", "sambaUnicodePwd": "geheim", "cn": "Niemand"}) # Checking for existence of record (remote) msg = self.ldb.search(expression="(unixName=bin)", attrs=['unixName','cn','dn', 'sambaUnicodePwd']) self.assertEquals(len(msg), 1) self.assertEquals(str(msg[0]["cn"]), "Niemand") self.assertEquals(str(msg[0]["sambaUnicodePwd"]), "geheim") # Checking for existence of record (local && remote) msg = self.ldb.search(expression="(&(unixName=bin)(sambaUnicodePwd=geheim))", attrs=['unixName','cn','dn', 'sambaUnicodePwd']) self.assertEquals(len(msg), 1) # TODO: should check with more records self.assertEquals(str(msg[0]["cn"]), "Niemand") self.assertEquals(str(msg[0]["unixName"]), "bin") self.assertEquals(str(msg[0]["sambaUnicodePwd"]), "geheim") # Checking for existence of record (local || remote) msg = self.ldb.search(expression="(|(unixName=bin)(sambaUnicodePwd=geheim))", attrs=['unixName','cn','dn', 'sambaUnicodePwd']) #print "got %d replies" % len(msg) self.assertEquals(len(msg), 1) # TODO: should check with more records self.assertEquals(str(msg[0]["cn"]), "Niemand") self.assertEquals(str(msg[0]["unixName"]), "bin") self.assertEquals(str(msg[0]["sambaUnicodePwd"]), "geheim") # Checking for data in destination database msg = self.samba3.db.search(expression="(cn=Niemand)") self.assertTrue(len(msg) >= 1) self.assertEquals(str(msg[0]["sambaSID"]), "S-1-5-21-4231626423-2410014848-2360679739-2001") self.assertEquals(str(msg[0]["displayName"]), "Niemand") # Adding attribute... self.ldb.modify_ldif(""" dn: cn=Niemand,cn=Users,dc=vernstok,dc=nl changetype: modify add: description description: Blah """) # Checking whether changes are still there... msg = self.ldb.search(expression="(cn=Niemand)") self.assertTrue(len(msg) >= 1) self.assertEquals(str(msg[0]["cn"]), "Niemand") self.assertEquals(str(msg[0]["description"]), "Blah") # Modifying attribute... self.ldb.modify_ldif(""" dn: cn=Niemand,cn=Users,dc=vernstok,dc=nl changetype: modify replace: description description: Blie """) # Checking whether changes are still there... msg = self.ldb.search(expression="(cn=Niemand)") self.assertTrue(len(msg) >= 1) self.assertEquals(str(msg[0]["description"]), "Blie") # Deleting attribute... self.ldb.modify_ldif(""" dn: cn=Niemand,cn=Users,dc=vernstok,dc=nl changetype: modify delete: description """) # Checking whether changes are no longer there... msg = self.ldb.search(expression="(cn=Niemand)") self.assertTrue(len(msg) >= 1) self.assertTrue(not "description" in msg[0]) # Renaming record... self.ldb.rename("cn=Niemand,cn=Users,dc=vernstok,dc=nl", "cn=Niemand2,cn=Users,dc=vernstok,dc=nl") # Checking whether DN has changed... msg = self.ldb.search(expression="(cn=Niemand2)") self.assertEquals(len(msg), 1) self.assertEquals(str(msg[0].dn), "cn=Niemand2,cn=Users,dc=vernstok,dc=nl") # Deleting record... self.ldb.delete("cn=Niemand2,cn=Users,dc=vernstok,dc=nl") # Checking whether record is gone... msg = self.ldb.search(expression="(cn=Niemand2)") self.assertEquals(len(msg), 0) class MapTestCase(MapBaseTestCase): def setUp(self): super(MapTestCase, self).setUp() ldb = Ldb(self.ldburl, lp=self.lp, session_info=system_session()) ldb.set_opaque("skip_allocate_sids", "true"); ldif = read_datafile("provision_samba3sam.ldif") ldb.add_ldif(self.samba4.subst(ldif)) self.setup_modules(ldb, self.samba3, self.samba4) del ldb self.ldb = Ldb(self.ldburl, lp=self.lp, session_info=system_session()) self.ldb.set_opaque("skip_allocate_sids", "true"); def test_map_search(self): """Running search tests on mapped data.""" self.samba3.db.add({ "dn": "sambaDomainName=TESTS," + self.samba3.basedn, "objectclass": ["sambaDomain", "top"], "sambaSID": "S-1-5-21-4231626423-2410014848-2360679739", "sambaNextRid": "2000", "sambaDomainName": "TESTS" }) # Add a set of split records self.ldb.add_ldif(""" dn: """+ self.samba4.dn("cn=Domain Users") + """ objectClass: group cn: Domain Users objectSid: S-1-5-21-4231626423-2410014848-2360679739-513 """) # Add a set of split records self.ldb.add_ldif(""" dn: """+ self.samba4.dn("cn=X") + """ objectClass: user cn: X codePage: x revision: x dnsHostName: x nextRid: y lastLogon: x description: x objectSid: S-1-5-21-4231626423-2410014848-2360679739-552 """) self.ldb.add({ "dn": self.samba4.dn("cn=Y"), "objectClass": "top", "cn": "Y", "codePage": "x", "revision": "x", "dnsHostName": "y", "nextRid": "y", "lastLogon": "y", "description": "x"}) self.ldb.add({ "dn": self.samba4.dn("cn=Z"), "objectClass": "top", "cn": "Z", "codePage": "x", "revision": "y", "dnsHostName": "z", "nextRid": "y", "lastLogon": "z", "description": "y"}) # Add a set of remote records self.samba3.db.add({ "dn": self.samba3.dn("cn=A"), "objectClass": "posixAccount", "cn": "A", "sambaNextRid": "x", "sambaBadPasswordCount": "x", "sambaLogonTime": "x", "description": "x", "sambaSID": "S-1-5-21-4231626423-2410014848-2360679739-552", "sambaPrimaryGroupSID": "S-1-5-21-4231626423-2410014848-2360679739-512"}) self.samba3.db.add({ "dn": self.samba3.dn("cn=B"), "objectClass": "top", "cn": "B", "sambaNextRid": "x", "sambaBadPasswordCount": "x", "sambaLogonTime": "y", "description": "x"}) self.samba3.db.add({ "dn": self.samba3.dn("cn=C"), "objectClass": "top", "cn": "C", "sambaNextRid": "x", "sambaBadPasswordCount": "y", "sambaLogonTime": "z", "description": "y"}) # Testing search by DN # Search remote record by local DN dn = self.samba4.dn("cn=A") res = self.ldb.search(dn, scope=SCOPE_BASE, attrs=["dnsHostName", "lastLogon"]) self.assertEquals(len(res), 1) self.assertEquals(str(res[0].dn), dn) self.assertTrue(not "dnsHostName" in res[0]) self.assertEquals(str(res[0]["lastLogon"]), "x") # Search remote record by remote DN dn = self.samba3.dn("cn=A") res = self.samba3.db.search(dn, scope=SCOPE_BASE, attrs=["dnsHostName", "lastLogon", "sambaLogonTime"]) self.assertEquals(len(res), 1) self.assertEquals(str(res[0].dn), dn) self.assertTrue(not "dnsHostName" in res[0]) self.assertTrue(not "lastLogon" in res[0]) self.assertEquals(str(res[0]["sambaLogonTime"]), "x") # Search split record by local DN dn = self.samba4.dn("cn=X") res = self.ldb.search(dn, scope=SCOPE_BASE, attrs=["dnsHostName", "lastLogon"]) self.assertEquals(len(res), 1) self.assertEquals(str(res[0].dn), dn) self.assertEquals(str(res[0]["dnsHostName"]), "x") self.assertEquals(str(res[0]["lastLogon"]), "x") # Search split record by remote DN dn = self.samba3.dn("cn=X") res = self.samba3.db.search(dn, scope=SCOPE_BASE, attrs=["dnsHostName", "lastLogon", "sambaLogonTime"]) self.assertEquals(len(res), 1) self.assertEquals(str(res[0].dn), dn) self.assertTrue(not "dnsHostName" in res[0]) self.assertTrue(not "lastLogon" in res[0]) self.assertEquals(str(res[0]["sambaLogonTime"]), "x") # Testing search by attribute # Search by ignored attribute res = self.ldb.search(expression="(revision=x)", scope=SCOPE_DEFAULT, attrs=["dnsHostName", "lastLogon"]) self.assertEquals(len(res), 2) res = sorted(res, key=attrgetter('dn')) self.assertEquals(str(res[0].dn), self.samba4.dn("cn=X")) self.assertEquals(str(res[0]["dnsHostName"]), "x") self.assertEquals(str(res[0]["lastLogon"]), "x") self.assertEquals(str(res[1].dn), self.samba4.dn("cn=Y")) self.assertEquals(str(res[1]["dnsHostName"]), "y") self.assertEquals(str(res[1]["lastLogon"]), "y") # Search by kept attribute res = self.ldb.search(expression="(description=y)", scope=SCOPE_DEFAULT, attrs=["dnsHostName", "lastLogon"]) self.assertEquals(len(res), 2) res = sorted(res, key=attrgetter('dn')) self.assertEquals(str(res[0].dn), self.samba4.dn("cn=C")) self.assertTrue(not "dnsHostName" in res[0]) self.assertEquals(str(res[0]["lastLogon"]), "z") self.assertEquals(str(res[1].dn), self.samba4.dn("cn=Z")) self.assertEquals(str(res[1]["dnsHostName"]), "z") self.assertEquals(str(res[1]["lastLogon"]), "z") # Search by renamed attribute res = self.ldb.search(expression="(badPwdCount=x)", scope=SCOPE_DEFAULT, attrs=["dnsHostName", "lastLogon"]) self.assertEquals(len(res), 2) res = sorted(res, key=attrgetter('dn')) self.assertEquals(str(res[0].dn), self.samba4.dn("cn=A")) self.assertTrue(not "dnsHostName" in res[0]) self.assertEquals(str(res[0]["lastLogon"]), "x") self.assertEquals(str(res[1].dn), self.samba4.dn("cn=B")) self.assertTrue(not "dnsHostName" in res[1]) self.assertEquals(str(res[1]["lastLogon"]), "y") # Search by converted attribute # TODO: # Using the SID directly in the parse tree leads to conversion # errors, letting the search fail with no results. #res = self.ldb.search("(objectSid=S-1-5-21-4231626423-2410014848-2360679739-552)", scope=SCOPE_DEFAULT, attrs) res = self.ldb.search(expression="(objectSid=*)", base=None, scope=SCOPE_DEFAULT, attrs=["dnsHostName", "lastLogon", "objectSid"]) self.assertEquals(len(res), 4) res = sorted(res, key=attrgetter('dn')) self.assertEquals(str(res[1].dn), self.samba4.dn("cn=X")) self.assertEquals(str(res[1]["dnsHostName"]), "x") self.assertEquals(str(res[1]["lastLogon"]), "x") self.assertSidEquals("S-1-5-21-4231626423-2410014848-2360679739-552", res[1]["objectSid"]) self.assertTrue("objectSid" in res[1]) self.assertEquals(str(res[0].dn), self.samba4.dn("cn=A")) self.assertTrue(not "dnsHostName" in res[0]) self.assertEquals(str(res[0]["lastLogon"]), "x") self.assertSidEquals("S-1-5-21-4231626423-2410014848-2360679739-552", res[0]["objectSid"]) self.assertTrue("objectSid" in res[0]) # Search by generated attribute # In most cases, this even works when the mapping is missing # a `convert_operator' by enumerating the remote db. res = self.ldb.search(expression="(primaryGroupID=512)", attrs=["dnsHostName", "lastLogon", "primaryGroupID"]) self.assertEquals(len(res), 1) self.assertEquals(str(res[0].dn), self.samba4.dn("cn=A")) self.assertTrue(not "dnsHostName" in res[0]) self.assertEquals(str(res[0]["lastLogon"]), "x") self.assertEquals(str(res[0]["primaryGroupID"]), "512") # Note that Xs "objectSid" seems to be fine in the previous search for # "objectSid"... #res = ldb.search(expression="(primaryGroupID=*)", NULL, ldb. SCOPE_DEFAULT, attrs) #print len(res) + " results found" #for i in range(len(res)): # for (obj in res[i]) { # print obj + ": " + res[i][obj] # } # print "---" # # Search by remote name of renamed attribute */ res = self.ldb.search(expression="(sambaBadPasswordCount=*)", attrs=["dnsHostName", "lastLogon"]) self.assertEquals(len(res), 0) # Search by objectClass attrs = ["dnsHostName", "lastLogon", "objectClass"] res = self.ldb.search(expression="(objectClass=user)", attrs=attrs) self.assertEquals(len(res), 2) res = sorted(res, key=attrgetter('dn')) self.assertEquals(str(res[0].dn), self.samba4.dn("cn=A")) self.assertTrue(not "dnsHostName" in res[0]) self.assertEquals(str(res[0]["lastLogon"]), "x") self.assertEquals(str(res[0]["objectClass"][0]), "user") self.assertEquals(str(res[1].dn), self.samba4.dn("cn=X")) self.assertEquals(str(res[1]["dnsHostName"]), "x") self.assertEquals(str(res[1]["lastLogon"]), "x") self.assertEquals(str(res[1]["objectClass"][0]), "user") # Prove that the objectClass is actually used for the search res = self.ldb.search(expression="(|(objectClass=user)(badPwdCount=x))", attrs=attrs) self.assertEquals(len(res), 3) res = sorted(res, key=attrgetter('dn')) self.assertEquals(str(res[0].dn), self.samba4.dn("cn=A")) self.assertTrue(not "dnsHostName" in res[0]) self.assertEquals(str(res[0]["lastLogon"]), "x") self.assertEquals(res[0]["objectClass"][0], "user") self.assertEquals(str(res[1].dn), self.samba4.dn("cn=B")) self.assertTrue(not "dnsHostName" in res[1]) self.assertEquals(str(res[1]["lastLogon"]), "y") self.assertEquals(set(res[1]["objectClass"]), set(["top"])) self.assertEquals(str(res[2].dn), self.samba4.dn("cn=X")) self.assertEquals(str(res[2]["dnsHostName"]), "x") self.assertEquals(str(res[2]["lastLogon"]), "x") self.assertEquals(str(res[2]["objectClass"][0]), "user") # Testing search by parse tree # Search by conjunction of local attributes res = self.ldb.search(expression="(&(codePage=x)(revision=x))", attrs=["dnsHostName", "lastLogon"]) self.assertEquals(len(res), 2) res = sorted(res, key=attrgetter('dn')) self.assertEquals(str(res[0].dn), self.samba4.dn("cn=X")) self.assertEquals(str(res[0]["dnsHostName"]), "x") self.assertEquals(str(res[0]["lastLogon"]), "x") self.assertEquals(str(res[1].dn), self.samba4.dn("cn=Y")) self.assertEquals(str(res[1]["dnsHostName"]), "y") self.assertEquals(str(res[1]["lastLogon"]), "y") # Search by conjunction of remote attributes res = self.ldb.search(expression="(&(lastLogon=x)(description=x))", attrs=["dnsHostName", "lastLogon"]) self.assertEquals(len(res), 2) res = sorted(res, key=attrgetter('dn')) self.assertEquals(str(res[0].dn), self.samba4.dn("cn=A")) self.assertTrue(not "dnsHostName" in res[0]) self.assertEquals(str(res[0]["lastLogon"]), "x") self.assertEquals(str(res[1].dn), self.samba4.dn("cn=X")) self.assertEquals(str(res[1]["dnsHostName"]), "x") self.assertEquals(str(res[1]["lastLogon"]), "x") # Search by conjunction of local and remote attribute res = self.ldb.search(expression="(&(codePage=x)(description=x))", attrs=["dnsHostName", "lastLogon"]) self.assertEquals(len(res), 2) res = sorted(res, key=attrgetter('dn')) self.assertEquals(str(res[0].dn), self.samba4.dn("cn=X")) self.assertEquals(str(res[0]["dnsHostName"]), "x") self.assertEquals(str(res[0]["lastLogon"]), "x") self.assertEquals(str(res[1].dn), self.samba4.dn("cn=Y")) self.assertEquals(str(res[1]["dnsHostName"]), "y") self.assertEquals(str(res[1]["lastLogon"]), "y") # Search by conjunction of local and remote attribute w/o match attrs = ["dnsHostName", "lastLogon"] res = self.ldb.search(expression="(&(codePage=x)(nextRid=x))", attrs=attrs) self.assertEquals(len(res), 0) res = self.ldb.search(expression="(&(revision=x)(lastLogon=z))", attrs=attrs) self.assertEquals(len(res), 0) # Search by disjunction of local attributes res = self.ldb.search(expression="(|(revision=x)(dnsHostName=x))", attrs=["dnsHostName", "lastLogon"]) self.assertEquals(len(res), 2) res = sorted(res, key=attrgetter('dn')) self.assertEquals(str(res[0].dn), self.samba4.dn("cn=X")) self.assertEquals(str(res[0]["dnsHostName"]), "x") self.assertEquals(str(res[0]["lastLogon"]), "x") self.assertEquals(str(res[1].dn), self.samba4.dn("cn=Y")) self.assertEquals(str(res[1]["dnsHostName"]), "y") self.assertEquals(str(res[1]["lastLogon"]), "y") # Search by disjunction of remote attributes res = self.ldb.search(expression="(|(badPwdCount=x)(lastLogon=x))", attrs=["dnsHostName", "lastLogon"]) self.assertEquals(len(res), 3) res = sorted(res, key=attrgetter('dn')) self.assertEquals(str(res[0].dn), self.samba4.dn("cn=A")) self.assertFalse("dnsHostName" in res[0]) self.assertEquals(str(res[0]["lastLogon"]), "x") self.assertEquals(str(res[1].dn), self.samba4.dn("cn=B")) self.assertFalse("dnsHostName" in res[1]) self.assertEquals(str(res[1]["lastLogon"]), "y") self.assertEquals(str(res[2].dn), self.samba4.dn("cn=X")) self.assertEquals(str(res[2]["dnsHostName"]), "x") self.assertEquals(str(res[2]["lastLogon"]), "x") # Search by disjunction of local and remote attribute res = self.ldb.search(expression="(|(revision=x)(lastLogon=y))", attrs=["dnsHostName", "lastLogon"]) self.assertEquals(len(res), 3) res = sorted(res, key=attrgetter('dn')) self.assertEquals(str(res[0].dn), self.samba4.dn("cn=B")) self.assertFalse("dnsHostName" in res[0]) self.assertEquals(str(res[0]["lastLogon"]), "y") self.assertEquals(str(res[1].dn), self.samba4.dn("cn=X")) self.assertEquals(str(res[1]["dnsHostName"]), "x") self.assertEquals(str(res[1]["lastLogon"]), "x") self.assertEquals(str(res[2].dn), self.samba4.dn("cn=Y")) self.assertEquals(str(res[2]["dnsHostName"]), "y") self.assertEquals(str(res[2]["lastLogon"]), "y") # Search by disjunction of local and remote attribute w/o match res = self.ldb.search(expression="(|(codePage=y)(nextRid=z))", attrs=["dnsHostName", "lastLogon"]) self.assertEquals(len(res), 0) # Search by negated local attribute res = self.ldb.search(expression="(!(revision=x))", attrs=["dnsHostName", "lastLogon"]) self.assertEquals(len(res), 6) res = sorted(res, key=attrgetter('dn')) self.assertEquals(str(res[0].dn), self.samba4.dn("cn=A")) self.assertTrue(not "dnsHostName" in res[0]) self.assertEquals(str(res[0]["lastLogon"]), "x") self.assertEquals(str(res[1].dn), self.samba4.dn("cn=B")) self.assertTrue(not "dnsHostName" in res[1]) self.assertEquals(str(res[1]["lastLogon"]), "y") self.assertEquals(str(res[2].dn), self.samba4.dn("cn=C")) self.assertTrue(not "dnsHostName" in res[2]) self.assertEquals(str(res[2]["lastLogon"]), "z") self.assertEquals(str(res[3].dn), self.samba4.dn("cn=Z")) self.assertEquals(str(res[3]["dnsHostName"]), "z") self.assertEquals(str(res[3]["lastLogon"]), "z") # Search by negated remote attribute res = self.ldb.search(expression="(!(description=x))", attrs=["dnsHostName", "lastLogon"]) self.assertEquals(len(res), 4) res = sorted(res, key=attrgetter('dn')) self.assertEquals(str(res[0].dn), self.samba4.dn("cn=C")) self.assertTrue(not "dnsHostName" in res[0]) self.assertEquals(str(res[0]["lastLogon"]), "z") self.assertEquals(str(res[1].dn), self.samba4.dn("cn=Z")) self.assertEquals(str(res[1]["dnsHostName"]), "z") self.assertEquals(str(res[1]["lastLogon"]), "z") # Search by negated conjunction of local attributes res = self.ldb.search(expression="(!(&(codePage=x)(revision=x)))", attrs=["dnsHostName", "lastLogon"]) self.assertEquals(len(res), 6) res = sorted(res, key=attrgetter('dn')) self.assertEquals(str(res[0].dn), self.samba4.dn("cn=A")) self.assertTrue(not "dnsHostName" in res[0]) self.assertEquals(str(res[0]["lastLogon"]), "x") self.assertEquals(str(res[1].dn), self.samba4.dn("cn=B")) self.assertTrue(not "dnsHostName" in res[1]) self.assertEquals(str(res[1]["lastLogon"]), "y") self.assertEquals(str(res[2].dn), self.samba4.dn("cn=C")) self.assertTrue(not "dnsHostName" in res[2]) self.assertEquals(str(res[2]["lastLogon"]), "z") self.assertEquals(str(res[3].dn), self.samba4.dn("cn=Z")) self.assertEquals(str(res[3]["dnsHostName"]), "z") self.assertEquals(str(res[3]["lastLogon"]), "z") # Search by negated conjunction of remote attributes res = self.ldb.search(expression="(!(&(lastLogon=x)(description=x)))", attrs=["dnsHostName", "lastLogon"]) self.assertEquals(len(res), 6) res = sorted(res, key=attrgetter('dn')) self.assertEquals(str(res[0].dn), self.samba4.dn("cn=B")) self.assertTrue(not "dnsHostName" in res[0]) self.assertEquals(str(res[0]["lastLogon"]), "y") self.assertEquals(str(res[1].dn), self.samba4.dn("cn=C")) self.assertTrue(not "dnsHostName" in res[1]) self.assertEquals(str(res[1]["lastLogon"]), "z") self.assertEquals(str(res[2].dn), self.samba4.dn("cn=Y")) self.assertEquals(str(res[2]["dnsHostName"]), "y") self.assertEquals(str(res[2]["lastLogon"]), "y") self.assertEquals(str(res[3].dn), self.samba4.dn("cn=Z")) self.assertEquals(str(res[3]["dnsHostName"]), "z") self.assertEquals(str(res[3]["lastLogon"]), "z") # Search by negated conjunction of local and remote attribute res = self.ldb.search(expression="(!(&(codePage=x)(description=x)))", attrs=["dnsHostName", "lastLogon"]) self.assertEquals(len(res), 6) res = sorted(res, key=attrgetter('dn')) self.assertEquals(str(res[0].dn), self.samba4.dn("cn=A")) self.assertTrue(not "dnsHostName" in res[0]) self.assertEquals(str(res[0]["lastLogon"]), "x") self.assertEquals(str(res[1].dn), self.samba4.dn("cn=B")) self.assertTrue(not "dnsHostName" in res[1]) self.assertEquals(str(res[1]["lastLogon"]), "y") self.assertEquals(str(res[2].dn), self.samba4.dn("cn=C")) self.assertTrue(not "dnsHostName" in res[2]) self.assertEquals(str(res[2]["lastLogon"]), "z") self.assertEquals(str(res[3].dn), self.samba4.dn("cn=Z")) self.assertEquals(str(res[3]["dnsHostName"]), "z") self.assertEquals(str(res[3]["lastLogon"]), "z") # Search by negated disjunction of local attributes res = self.ldb.search(expression="(!(|(revision=x)(dnsHostName=x)))", attrs=["dnsHostName", "lastLogon"]) res = sorted(res, key=attrgetter('dn')) self.assertEquals(str(res[0].dn), self.samba4.dn("cn=A")) self.assertTrue(not "dnsHostName" in res[0]) self.assertEquals(str(res[0]["lastLogon"]), "x") self.assertEquals(str(res[1].dn), self.samba4.dn("cn=B")) self.assertTrue(not "dnsHostName" in res[1]) self.assertEquals(str(res[1]["lastLogon"]), "y") self.assertEquals(str(res[2].dn), self.samba4.dn("cn=C")) self.assertTrue(not "dnsHostName" in res[2]) self.assertEquals(str(res[2]["lastLogon"]), "z") self.assertEquals(str(res[3].dn), self.samba4.dn("cn=Z")) self.assertEquals(str(res[3]["dnsHostName"]), "z") self.assertEquals(str(res[3]["lastLogon"]), "z") # Search by negated disjunction of remote attributes res = self.ldb.search(expression="(!(|(badPwdCount=x)(lastLogon=x)))", attrs=["dnsHostName", "lastLogon"]) self.assertEquals(len(res), 5) res = sorted(res, key=attrgetter('dn')) self.assertEquals(str(res[0].dn), self.samba4.dn("cn=C")) self.assertTrue(not "dnsHostName" in res[0]) self.assertEquals(str(res[0]["lastLogon"]), "z") self.assertEquals(str(res[1].dn), self.samba4.dn("cn=Y")) self.assertEquals(str(res[1]["dnsHostName"]), "y") self.assertEquals(str(res[1]["lastLogon"]), "y") self.assertEquals(str(res[2].dn), self.samba4.dn("cn=Z")) self.assertEquals(str(res[2]["dnsHostName"]), "z") self.assertEquals(str(res[2]["lastLogon"]), "z") # Search by negated disjunction of local and remote attribute res = self.ldb.search(expression="(!(|(revision=x)(lastLogon=y)))", attrs=["dnsHostName", "lastLogon"]) self.assertEquals(len(res), 5) res = sorted(res, key=attrgetter('dn')) self.assertEquals(str(res[0].dn), self.samba4.dn("cn=A")) self.assertTrue(not "dnsHostName" in res[0]) self.assertEquals(str(res[0]["lastLogon"]), "x") self.assertEquals(str(res[1].dn), self.samba4.dn("cn=C")) self.assertTrue(not "dnsHostName" in res[1]) self.assertEquals(str(res[1]["lastLogon"]), "z") self.assertEquals(str(res[2].dn), self.samba4.dn("cn=Z")) self.assertEquals(str(res[2]["dnsHostName"]), "z") self.assertEquals(str(res[2]["lastLogon"]), "z") # Search by complex parse tree res = self.ldb.search(expression="(|(&(revision=x)(dnsHostName=x))(!(&(description=x)(nextRid=y)))(badPwdCount=y))", attrs=["dnsHostName", "lastLogon"]) self.assertEquals(len(res), 7) res = sorted(res, key=attrgetter('dn')) self.assertEquals(str(res[0].dn), self.samba4.dn("cn=A")) self.assertTrue(not "dnsHostName" in res[0]) self.assertEquals(str(res[0]["lastLogon"]), "x") self.assertEquals(str(res[1].dn), self.samba4.dn("cn=B")) self.assertTrue(not "dnsHostName" in res[1]) self.assertEquals(str(res[1]["lastLogon"]), "y") self.assertEquals(str(res[2].dn), self.samba4.dn("cn=C")) self.assertTrue(not "dnsHostName" in res[2]) self.assertEquals(str(res[2]["lastLogon"]), "z") self.assertEquals(str(res[3].dn), self.samba4.dn("cn=X")) self.assertEquals(str(res[3]["dnsHostName"]), "x") self.assertEquals(str(res[3]["lastLogon"]), "x") self.assertEquals(str(res[4].dn), self.samba4.dn("cn=Z")) self.assertEquals(str(res[4]["dnsHostName"]), "z") self.assertEquals(str(res[4]["lastLogon"]), "z") # Clean up dns = [self.samba4.dn("cn=%s" % n) for n in ["A","B","C","X","Y","Z"]] for dn in dns: self.ldb.delete(dn) def test_map_modify_local(self): """Modification of local records.""" # Add local record dn = "cn=test,dc=idealx,dc=org" self.ldb.add({"dn": dn, "cn": "test", "foo": "bar", "revision": "1", "description": "test"}) # Check it's there attrs = ["foo", "revision", "description"] res = self.ldb.search(dn, scope=SCOPE_BASE, attrs=attrs) self.assertEquals(len(res), 1) self.assertEquals(str(res[0].dn), dn) self.assertEquals(str(res[0]["foo"]), "bar") self.assertEquals(str(res[0]["revision"]), "1") self.assertEquals(str(res[0]["description"]), "test") # Check it's not in the local db res = self.samba4.db.search(expression="(cn=test)", scope=SCOPE_DEFAULT, attrs=attrs) self.assertEquals(len(res), 0) # Check it's not in the remote db res = self.samba3.db.search(expression="(cn=test)", scope=SCOPE_DEFAULT, attrs=attrs) self.assertEquals(len(res), 0) # Modify local record ldif = """ dn: """ + dn + """ replace: foo foo: baz replace: description description: foo """ self.ldb.modify_ldif(ldif) # Check in local db res = self.ldb.search(dn, scope=SCOPE_BASE, attrs=attrs) self.assertEquals(len(res), 1) self.assertEquals(str(res[0].dn), dn) self.assertEquals(str(res[0]["foo"]), "baz") self.assertEquals(str(res[0]["revision"]), "1") self.assertEquals(str(res[0]["description"]), "foo") # Rename local record dn2 = "cn=toast,dc=idealx,dc=org" self.ldb.rename(dn, dn2) # Check in local db res = self.ldb.search(dn2, scope=SCOPE_BASE, attrs=attrs) self.assertEquals(len(res), 1) self.assertEquals(str(res[0].dn), dn2) self.assertEquals(str(res[0]["foo"]), "baz") self.assertEquals(str(res[0]["revision"]), "1") self.assertEquals(str(res[0]["description"]), "foo") # Delete local record self.ldb.delete(dn2) # Check it's gone res = self.ldb.search(dn2, scope=SCOPE_BASE) self.assertEquals(len(res), 0) def test_map_modify_remote_remote(self): """Modification of remote data of remote records""" # Add remote record dn = self.samba4.dn("cn=test") dn2 = self.samba3.dn("cn=test") self.samba3.db.add({"dn": dn2, "cn": "test", "description": "foo", "sambaBadPasswordCount": "3", "sambaNextRid": "1001"}) # Check it's there res = self.samba3.db.search(dn2, scope=SCOPE_BASE, attrs=["description", "sambaBadPasswordCount", "sambaNextRid"]) self.assertEquals(len(res), 1) self.assertEquals(str(res[0].dn), dn2) self.assertEquals(str(res[0]["description"]), "foo") self.assertEquals(str(res[0]["sambaBadPasswordCount"]), "3") self.assertEquals(str(res[0]["sambaNextRid"]), "1001") # Check in mapped db attrs = ["description", "badPwdCount", "nextRid"] res = self.ldb.search(dn, scope=SCOPE_BASE, attrs=attrs, expression="") self.assertEquals(len(res), 1) self.assertEquals(str(res[0].dn), dn) self.assertEquals(str(res[0]["description"]), "foo") self.assertEquals(str(res[0]["badPwdCount"]), "3") self.assertEquals(str(res[0]["nextRid"]), "1001") # Check in local db res = self.samba4.db.search(dn, scope=SCOPE_BASE, attrs=attrs) self.assertEquals(len(res), 0) # Modify remote data of remote record ldif = """ dn: """ + dn + """ replace: description description: test replace: badPwdCount badPwdCount: 4 """ self.ldb.modify_ldif(ldif) # Check in mapped db res = self.ldb.search(dn, scope=SCOPE_BASE, attrs=["description", "badPwdCount", "nextRid"]) self.assertEquals(len(res), 1) self.assertEquals(str(res[0].dn), dn) self.assertEquals(str(res[0]["description"]), "test") self.assertEquals(str(res[0]["badPwdCount"]), "4") self.assertEquals(str(res[0]["nextRid"]), "1001") # Check in remote db res = self.samba3.db.search(dn2, scope=SCOPE_BASE, attrs=["description", "sambaBadPasswordCount", "sambaNextRid"]) self.assertEquals(len(res), 1) self.assertEquals(str(res[0].dn), dn2) self.assertEquals(str(res[0]["description"]), "test") self.assertEquals(str(res[0]["sambaBadPasswordCount"]), "4") self.assertEquals(str(res[0]["sambaNextRid"]), "1001") # Rename remote record dn2 = self.samba4.dn("cn=toast") self.ldb.rename(dn, dn2) # Check in mapped db dn = dn2 res = self.ldb.search(dn, scope=SCOPE_BASE, attrs=["description", "badPwdCount", "nextRid"]) self.assertEquals(len(res), 1) self.assertEquals(str(res[0].dn), dn) self.assertEquals(str(res[0]["description"]), "test") self.assertEquals(str(res[0]["badPwdCount"]), "4") self.assertEquals(str(res[0]["nextRid"]), "1001") # Check in remote db dn2 = self.samba3.dn("cn=toast") res = self.samba3.db.search(dn2, scope=SCOPE_BASE, attrs=["description", "sambaBadPasswordCount", "sambaNextRid"]) self.assertEquals(len(res), 1) self.assertEquals(str(res[0].dn), dn2) self.assertEquals(str(res[0]["description"]), "test") self.assertEquals(str(res[0]["sambaBadPasswordCount"]), "4") self.assertEquals(str(res[0]["sambaNextRid"]), "1001") # Delete remote record self.ldb.delete(dn) # Check in mapped db that it's removed res = self.ldb.search(dn, scope=SCOPE_BASE) self.assertEquals(len(res), 0) # Check in remote db res = self.samba3.db.search(dn2, scope=SCOPE_BASE) self.assertEquals(len(res), 0) def test_map_modify_remote_local(self): """Modification of local data of remote records""" # Add remote record (same as before) dn = self.samba4.dn("cn=test") dn2 = self.samba3.dn("cn=test") self.samba3.db.add({"dn": dn2, "cn": "test", "description": "foo", "sambaBadPasswordCount": "3", "sambaNextRid": "1001"}) # Modify local data of remote record ldif = """ dn: """ + dn + """ add: revision revision: 1 replace: description description: test """ self.ldb.modify_ldif(ldif) # Check in mapped db attrs = ["revision", "description"] res = self.ldb.search(dn, scope=SCOPE_BASE, attrs=attrs) self.assertEquals(len(res), 1) self.assertEquals(str(res[0].dn), dn) self.assertEquals(str(res[0]["description"]), "test") self.assertEquals(str(res[0]["revision"]), "1") # Check in remote db res = self.samba3.db.search(dn2, scope=SCOPE_BASE, attrs=attrs) self.assertEquals(len(res), 1) self.assertEquals(str(res[0].dn), dn2) self.assertEquals(str(res[0]["description"]), "test") self.assertTrue(not "revision" in res[0]) # Check in local db res = self.samba4.db.search(dn, scope=SCOPE_BASE, attrs=attrs) self.assertEquals(len(res), 1) self.assertEquals(str(res[0].dn), dn) self.assertTrue(not "description" in res[0]) self.assertEquals(str(res[0]["revision"]), "1") # Delete (newly) split record self.ldb.delete(dn) def test_map_modify_split(self): """Testing modification of split records""" # Add split record dn = self.samba4.dn("cn=test") dn2 = self.samba3.dn("cn=test") self.ldb.add({ "dn": dn, "cn": "test", "description": "foo", "badPwdCount": "3", "nextRid": "1001", "revision": "1"}) # Check it's there attrs = ["description", "badPwdCount", "nextRid", "revision"] res = self.ldb.search(dn, scope=SCOPE_BASE, attrs=attrs) self.assertEquals(len(res), 1) self.assertEquals(str(res[0].dn), dn) self.assertEquals(str(res[0]["description"]), "foo") self.assertEquals(str(res[0]["badPwdCount"]), "3") self.assertEquals(str(res[0]["nextRid"]), "1001") self.assertEquals(str(res[0]["revision"]), "1") # Check in local db res = self.samba4.db.search(dn, scope=SCOPE_BASE, attrs=attrs) self.assertEquals(len(res), 1) self.assertEquals(str(res[0].dn), dn) self.assertTrue(not "description" in res[0]) self.assertTrue(not "badPwdCount" in res[0]) self.assertTrue(not "nextRid" in res[0]) self.assertEquals(str(res[0]["revision"]), "1") # Check in remote db attrs = ["description", "sambaBadPasswordCount", "sambaNextRid", "revision"] res = self.samba3.db.search(dn2, scope=SCOPE_BASE, attrs=attrs) self.assertEquals(len(res), 1) self.assertEquals(str(res[0].dn), dn2) self.assertEquals(str(res[0]["description"]), "foo") self.assertEquals(str(res[0]["sambaBadPasswordCount"]), "3") self.assertEquals(str(res[0]["sambaNextRid"]), "1001") self.assertTrue(not "revision" in res[0]) # Modify of split record ldif = """ dn: """ + dn + """ replace: description description: test replace: badPwdCount badPwdCount: 4 replace: revision revision: 2 """ self.ldb.modify_ldif(ldif) # Check in mapped db attrs = ["description", "badPwdCount", "nextRid", "revision"] res = self.ldb.search(dn, scope=SCOPE_BASE, attrs=attrs) self.assertEquals(len(res), 1) self.assertEquals(str(res[0].dn), dn) self.assertEquals(str(res[0]["description"]), "test") self.assertEquals(str(res[0]["badPwdCount"]), "4") self.assertEquals(str(res[0]["nextRid"]), "1001") self.assertEquals(str(res[0]["revision"]), "2") # Check in local db res = self.samba4.db.search(dn, scope=SCOPE_BASE, attrs=attrs) self.assertEquals(len(res), 1) self.assertEquals(str(res[0].dn), dn) self.assertTrue(not "description" in res[0]) self.assertTrue(not "badPwdCount" in res[0]) self.assertTrue(not "nextRid" in res[0]) self.assertEquals(str(res[0]["revision"]), "2") # Check in remote db attrs = ["description", "sambaBadPasswordCount", "sambaNextRid", "revision"] res = self.samba3.db.search(dn2, scope=SCOPE_BASE, attrs=attrs) self.assertEquals(len(res), 1) self.assertEquals(str(res[0].dn), dn2) self.assertEquals(str(res[0]["description"]), "test") self.assertEquals(str(res[0]["sambaBadPasswordCount"]), "4") self.assertEquals(str(res[0]["sambaNextRid"]), "1001") self.assertTrue(not "revision" in res[0]) # Rename split record dn2 = self.samba4.dn("cn=toast") self.ldb.rename(dn, dn2) # Check in mapped db dn = dn2 attrs = ["description", "badPwdCount", "nextRid", "revision"] res = self.ldb.search(dn, scope=SCOPE_BASE, attrs=attrs) self.assertEquals(len(res), 1) self.assertEquals(str(res[0].dn), dn) self.assertEquals(str(res[0]["description"]), "test") self.assertEquals(str(res[0]["badPwdCount"]), "4") self.assertEquals(str(res[0]["nextRid"]), "1001") self.assertEquals(str(res[0]["revision"]), "2") # Check in local db res = self.samba4.db.search(dn, scope=SCOPE_BASE, attrs=attrs) self.assertEquals(len(res), 1) self.assertEquals(str(res[0].dn), dn) self.assertTrue(not "description" in res[0]) self.assertTrue(not "badPwdCount" in res[0]) self.assertTrue(not "nextRid" in res[0]) self.assertEquals(str(res[0]["revision"]), "2") # Check in remote db dn2 = self.samba3.dn("cn=toast") res = self.samba3.db.search(dn2, scope=SCOPE_BASE, attrs=["description", "sambaBadPasswordCount", "sambaNextRid", "revision"]) self.assertEquals(len(res), 1) self.assertEquals(str(res[0].dn), dn2) self.assertEquals(str(res[0]["description"]), "test") self.assertEquals(str(res[0]["sambaBadPasswordCount"]), "4") self.assertEquals(str(res[0]["sambaNextRid"]), "1001") self.assertTrue(not "revision" in res[0]) # Delete split record self.ldb.delete(dn) # Check in mapped db res = self.ldb.search(dn, scope=SCOPE_BASE) self.assertEquals(len(res), 0) # Check in local db res = self.samba4.db.search(dn, scope=SCOPE_BASE) self.assertEquals(len(res), 0) # Check in remote db res = self.samba3.db.search(dn2, scope=SCOPE_BASE) self.assertEquals(len(res), 0) ef='#n1318'>1318 1319 1320 1321 1322 1323 1324 1325 1326 1327 1328 1329 1330 1331 1332 1333 1334 1335 1336 1337 1338 1339 1340 1341 1342 1343 1344 1345 1346 1347 1348 1349 1350 1351 1352 1353 1354 1355 1356 1357 1358 1359 1360 1361 1362 1363 1364 1365 1366 1367 1368 1369 1370 1371 1372 1373 1374 1375 1376 1377 1378 1379 1380 1381 1382 1383 1384 1385 1386 1387 1388 1389 1390 1391 1392 1393 1394 1395 1396 1397 1398 1399 1400 1401 1402 1403 1404 1405 1406 1407 1408 1409 1410 1411 1412 1413 1414 1415 1416 1417 1418 1419 1420 1421 1422 1423 1424 1425 1426 1427 1428 1429 1430 1431 1432 1433 1434 1435 1436 1437 1438 1439 1440 1441 1442 1443 1444 1445 1446 1447 1448 1449 1450 1451 1452 1453 1454 1455 1456 1457 1458 1459 1460 1461 1462 1463 1464 1465 1466 1467 1468 1469 1470 1471 1472 1473 1474 1475 1476 1477 1478 1479 1480 1481 1482 1483 1484 1485 1486 1487 1488 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/*
 * Copyright 2000 by Hans Reiser, licensing governed by reiserfs/README
 *
 * Trivial changes by Alan Cox to add the LFS fixes
 *
 * Trivial Changes:
 * Rights granted to Hans Reiser to redistribute under other terms providing
 * he accepts all liability including but not limited to patent, fitness
 * for purpose, and direct or indirect claims arising from failure to perform.
 *
 * NO WARRANTY
 */

#include <linux/config.h>
#include <linux/module.h>
#include <linux/vmalloc.h>
#include <linux/time.h>
#include <asm/uaccess.h>
#include <linux/reiserfs_fs.h>
#include <linux/reiserfs_acl.h>
#include <linux/reiserfs_xattr.h>
#include <linux/smp_lock.h>
#include <linux/init.h>
#include <linux/blkdev.h>
#include <linux/buffer_head.h>
#include <linux/vfs.h>
#include <linux/namespace.h>
#include <linux/mount.h>
#include <linux/namei.h>
#include <linux/quotaops.h>

struct file_system_type reiserfs_fs_type;

static const char reiserfs_3_5_magic_string[] = REISERFS_SUPER_MAGIC_STRING;
static const char reiserfs_3_6_magic_string[] = REISER2FS_SUPER_MAGIC_STRING;
static const char reiserfs_jr_magic_string[] = REISER2FS_JR_SUPER_MAGIC_STRING;

int is_reiserfs_3_5(struct reiserfs_super_block *rs)
{
	return !strncmp(rs->s_v1.s_magic, reiserfs_3_5_magic_string,
			strlen(reiserfs_3_5_magic_string));
}

int is_reiserfs_3_6(struct reiserfs_super_block *rs)
{
	return !strncmp(rs->s_v1.s_magic, reiserfs_3_6_magic_string,
			strlen(reiserfs_3_6_magic_string));
}

int is_reiserfs_jr(struct reiserfs_super_block *rs)
{
	return !strncmp(rs->s_v1.s_magic, reiserfs_jr_magic_string,
			strlen(reiserfs_jr_magic_string));
}

static int is_any_reiserfs_magic_string(struct reiserfs_super_block *rs)
{
	return (is_reiserfs_3_5(rs) || is_reiserfs_3_6(rs) ||
		is_reiserfs_jr(rs));
}

static int reiserfs_remount(struct super_block *s, int *flags, char *data);
static int reiserfs_statfs(struct super_block *s, struct kstatfs *buf);

static int reiserfs_sync_fs(struct super_block *s, int wait)
{
	if (!(s->s_flags & MS_RDONLY)) {
		struct reiserfs_transaction_handle th;
		reiserfs_write_lock(s);
		if (!journal_begin(&th, s, 1))
			if (!journal_end_sync(&th, s, 1))
				reiserfs_flush_old_commits(s);
		s->s_dirt = 0;	/* Even if it's not true.
				 * We'll loop forever in sync_supers otherwise */
		reiserfs_write_unlock(s);
	} else {
		s->s_dirt = 0;
	}
	return 0;
}

static void reiserfs_write_super(struct super_block *s)
{
	reiserfs_sync_fs(s, 1);
}

static void reiserfs_write_super_lockfs(struct super_block *s)
{
	struct reiserfs_transaction_handle th;
	reiserfs_write_lock(s);
	if (!(s->s_flags & MS_RDONLY)) {
		int err = journal_begin(&th, s, 1);
		if (err) {
			reiserfs_block_writes(&th);
		} else {
			reiserfs_prepare_for_journal(s, SB_BUFFER_WITH_SB(s),
						     1);
			journal_mark_dirty(&th, s, SB_BUFFER_WITH_SB(s));
			reiserfs_block_writes(&th);
			journal_end_sync(&th, s, 1);
		}
	}
	s->s_dirt = 0;
	reiserfs_write_unlock(s);
}

static void reiserfs_unlockfs(struct super_block *s)
{
	reiserfs_allow_writes(s);
}

extern const struct in_core_key MAX_IN_CORE_KEY;

/* this is used to delete "save link" when there are no items of a
   file it points to. It can either happen if unlink is completed but
   "save unlink" removal, or if file has both unlink and truncate
   pending and as unlink completes first (because key of "save link"
   protecting unlink is bigger that a key lf "save link" which
   protects truncate), so there left no items to make truncate
   completion on */
static int remove_save_link_only(struct super_block *s,
				 struct reiserfs_key *key, int oid_free)
{
	struct reiserfs_transaction_handle th;
	int err;

	/* we are going to do one balancing */
	err = journal_begin(&th, s, JOURNAL_PER_BALANCE_CNT);
	if (err)
		return err;

	reiserfs_delete_solid_item(&th, NULL, key);
	if (oid_free)
		/* removals are protected by direct items */
		reiserfs_release_objectid(&th, le32_to_cpu(key->k_objectid));

	return journal_end(&th, s, JOURNAL_PER_BALANCE_CNT);
}

#ifdef CONFIG_QUOTA
static int reiserfs_quota_on_mount(struct super_block *, int);
#endif

/* look for uncompleted unlinks and truncates and complete them */
static int finish_unfinished(struct super_block *s)
{
	INITIALIZE_PATH(path);
	struct cpu_key max_cpu_key, obj_key;
	struct reiserfs_key save_link_key;
	int retval = 0;
	struct item_head *ih;
	struct buffer_head *bh;
	int item_pos;
	char *item;
	int done;
	struct inode *inode;
	int truncate;
#ifdef CONFIG_QUOTA
	int i;
	int ms_active_set;
#endif

	/* compose key to look for "save" links */
	max_cpu_key.version = KEY_FORMAT_3_5;
	max_cpu_key.on_disk_key.k_dir_id = ~0U;
	max_cpu_key.on_disk_key.k_objectid = ~0U;
	set_cpu_key_k_offset(&max_cpu_key, ~0U);
	max_cpu_key.key_length = 3;

#ifdef CONFIG_QUOTA
	/* Needed for iput() to work correctly and not trash data */
	if (s->s_flags & MS_ACTIVE) {
		ms_active_set = 0;
	} else {
		ms_active_set = 1;
		s->s_flags |= MS_ACTIVE;
	}
	/* Turn on quotas so that they are updated correctly */
	for (i = 0; i < MAXQUOTAS; i++) {
		if (REISERFS_SB(s)->s_qf_names[i]) {
			int ret = reiserfs_quota_on_mount(s, i);
			if (ret < 0)
				reiserfs_warning(s,
						 "reiserfs: cannot turn on journalled quota: error %d",
						 ret);
		}
	}
#endif

	done = 0;
	REISERFS_SB(s)->s_is_unlinked_ok = 1;
	while (!retval) {
		retval = search_item(s, &max_cpu_key, &path);
		if (retval != ITEM_NOT_FOUND) {
			reiserfs_warning(s,
					 "vs-2140: finish_unfinished: search_by_key returned %d",
					 retval);
			break;
		}

		bh = get_last_bh(&path);
		item_pos = get_item_pos(&path);
		if (item_pos != B_NR_ITEMS(bh)) {
			reiserfs_warning(s,
					 "vs-2060: finish_unfinished: wrong position found");
			break;
		}
		item_pos--;
		ih = B_N_PITEM_HEAD(bh, item_pos);

		if (le32_to_cpu(ih->ih_key.k_dir_id) != MAX_KEY_OBJECTID)
			/* there are no "save" links anymore */
			break;

		save_link_key = ih->ih_key;
		if (is_indirect_le_ih(ih))
			truncate = 1;
		else
			truncate = 0;

		/* reiserfs_iget needs k_dirid and k_objectid only */
		item = B_I_PITEM(bh, ih);
		obj_key.on_disk_key.k_dir_id = le32_to_cpu(*(__le32 *) item);
		obj_key.on_disk_key.k_objectid =
		    le32_to_cpu(ih->ih_key.k_objectid);
		obj_key.on_disk_key.k_offset = 0;
		obj_key.on_disk_key.k_type = 0;

		pathrelse(&path);

		inode = reiserfs_iget(s, &obj_key);
		if (!inode) {
			/* the unlink almost completed, it just did not manage to remove
			   "save" link and release objectid */
			reiserfs_warning(s,
					 "vs-2180: finish_unfinished: iget failed for %K",
					 &obj_key);
			retval = remove_save_link_only(s, &save_link_key, 1);
			continue;
		}

		if (!truncate && inode->i_nlink) {
			/* file is not unlinked */
			reiserfs_warning(s,
					 "vs-2185: finish_unfinished: file %K is not unlinked",
					 &obj_key);
			retval = remove_save_link_only(s, &save_link_key, 0);
			continue;
		}
		DQUOT_INIT(inode);

		if (truncate && S_ISDIR(inode->i_mode)) {
			/* We got a truncate request for a dir which is impossible.
			   The only imaginable way is to execute unfinished truncate request
			   then boot into old kernel, remove the file and create dir with
			   the same key. */
			reiserfs_warning(s,
					 "green-2101: impossible truncate on a directory %k. Please report",
					 INODE_PKEY(inode));
			retval = remove_save_link_only(s, &save_link_key, 0);
			truncate = 0;
			iput(inode);
			continue;
		}

		if (truncate) {
			REISERFS_I(inode)->i_flags |=
			    i_link_saved_truncate_mask;
			/* not completed truncate found. New size was committed together
			   with "save" link */
			reiserfs_info(s, "Truncating %k to %Ld ..",
				      INODE_PKEY(inode), inode->i_size);
			reiserfs_truncate_file(inode,
					       0
					       /*don't update modification time */
					       );
			retval = remove_save_link(inode, truncate);
		} else {
			REISERFS_I(inode)->i_flags |= i_link_saved_unlink_mask;
			/* not completed unlink (rmdir) found */
			reiserfs_info(s, "Removing %k..", INODE_PKEY(inode));
			/* removal gets completed in iput */
			retval = 0;
		}

		iput(inode);
		printk("done\n");
		done++;
	}
	REISERFS_SB(s)->s_is_unlinked_ok = 0;

#ifdef CONFIG_QUOTA
	/* Turn quotas off */
	for (i = 0; i < MAXQUOTAS; i++) {
		if (sb_dqopt(s)->files[i])
			vfs_quota_off_mount(s, i);
	}
	if (ms_active_set)
		/* Restore the flag back */
		s->s_flags &= ~MS_ACTIVE;
#endif
	pathrelse(&path);
	if (done)
		reiserfs_info(s, "There were %d uncompleted unlinks/truncates. "
			      "Completed\n", done);
	return retval;
}

/* to protect file being unlinked from getting lost we "safe" link files
   being unlinked. This link will be deleted in the same transaction with last
   item of file. mounting the filesytem we scan all these links and remove
   files which almost got lost */
void add_save_link(struct reiserfs_transaction_handle *th,
		   struct inode *inode, int truncate)
{
	INITIALIZE_PATH(path);
	int retval;
	struct cpu_key key;
	struct item_head ih;
	__le32 link;

	BUG_ON(!th->t_trans_id);

	/* file can only get one "save link" of each kind */
	RFALSE(truncate &&
	       (REISERFS_I(inode)->i_flags & i_link_saved_truncate_mask),
	       "saved link already exists for truncated inode %lx",
	       (long)inode->i_ino);
	RFALSE(!truncate &&
	       (REISERFS_I(inode)->i_flags & i_link_saved_unlink_mask),
	       "saved link already exists for unlinked inode %lx",
	       (long)inode->i_ino);

	/* setup key of "save" link */
	key.version = KEY_FORMAT_3_5;
	key.on_disk_key.k_dir_id = MAX_KEY_OBJECTID;
	key.on_disk_key.k_objectid = inode->i_ino;
	if (!truncate) {
		/* unlink, rmdir, rename */
		set_cpu_key_k_offset(&key, 1 + inode->i_sb->s_blocksize);
		set_cpu_key_k_type(&key, TYPE_DIRECT);

		/* item head of "safe" link */
		make_le_item_head(&ih, &key, key.version,
				  1 + inode->i_sb->s_blocksize, TYPE_DIRECT,
				  4 /*length */ , 0xffff /*free space */ );
	} else {
		/* truncate */
		if (S_ISDIR(inode->i_mode))
			reiserfs_warning(inode->i_sb,
					 "green-2102: Adding a truncate savelink for a directory %k! Please report",
					 INODE_PKEY(inode));
		set_cpu_key_k_offset(&key, 1);
		set_cpu_key_k_type(&key, TYPE_INDIRECT);

		/* item head of "safe" link */
		make_le_item_head(&ih, &key, key.version, 1, TYPE_INDIRECT,
				  4 /*length */ , 0 /*free space */ );
	}
	key.key_length = 3;

	/* look for its place in the tree */
	retval = search_item(inode->i_sb, &key, &path);
	if (retval != ITEM_NOT_FOUND) {
		if (retval != -ENOSPC)
			reiserfs_warning(inode->i_sb, "vs-2100: add_save_link:"
					 "search_by_key (%K) returned %d", &key,
					 retval);
		pathrelse(&path);
		return;
	}

	/* body of "save" link */
	link = INODE_PKEY(inode)->k_dir_id;

	/* put "save" link inot tree, don't charge quota to anyone */
	retval =
	    reiserfs_insert_item(th, &path, &key, &ih, NULL, (char *)&link);
	if (retval) {
		if (retval != -ENOSPC)
			reiserfs_warning(inode->i_sb,
					 "vs-2120: add_save_link: insert_item returned %d",
					 retval);
	} else {
		if (truncate)
			REISERFS_I(inode)->i_flags |=
			    i_link_saved_truncate_mask;
		else
			REISERFS_I(inode)->i_flags |= i_link_saved_unlink_mask;
	}
}

/* this opens transaction unlike add_save_link */
int remove_save_link(struct inode *inode, int truncate)
{
	struct reiserfs_transaction_handle th;
	struct reiserfs_key key;
	int err;

	/* we are going to do one balancing only */
	err = journal_begin(&th, inode->i_sb, JOURNAL_PER_BALANCE_CNT);
	if (err)
		return err;

	/* setup key of "save" link */
	key.k_dir_id = cpu_to_le32(MAX_KEY_OBJECTID);
	key.k_objectid = INODE_PKEY(inode)->k_objectid;
	if (!truncate) {
		/* unlink, rmdir, rename */
		set_le_key_k_offset(KEY_FORMAT_3_5, &key,
				    1 + inode->i_sb->s_blocksize);
		set_le_key_k_type(KEY_FORMAT_3_5, &key, TYPE_DIRECT);
	} else {
		/* truncate */
		set_le_key_k_offset(KEY_FORMAT_3_5, &key, 1);
		set_le_key_k_type(KEY_FORMAT_3_5, &key, TYPE_INDIRECT);
	}

	if ((truncate &&
	     (REISERFS_I(inode)->i_flags & i_link_saved_truncate_mask)) ||
	    (!truncate &&
	     (REISERFS_I(inode)->i_flags & i_link_saved_unlink_mask)))
		/* don't take quota bytes from anywhere */
		reiserfs_delete_solid_item(&th, NULL, &key);
	if (!truncate) {
		reiserfs_release_objectid(&th, inode->i_ino);
		REISERFS_I(inode)->i_flags &= ~i_link_saved_unlink_mask;
	} else
		REISERFS_I(inode)->i_flags &= ~i_link_saved_truncate_mask;

	return journal_end(&th, inode->i_sb, JOURNAL_PER_BALANCE_CNT);
}

static void reiserfs_put_super(struct super_block *s)
{
	int i;
	struct reiserfs_transaction_handle th;
	th.t_trans_id = 0;

	if (REISERFS_SB(s)->xattr_root) {
		d_invalidate(REISERFS_SB(s)->xattr_root);
		dput(REISERFS_SB(s)->xattr_root);
	}

	if (REISERFS_SB(s)->priv_root) {
		d_invalidate(REISERFS_SB(s)->priv_root);
		dput(REISERFS_SB(s)->priv_root);
	}

	/* change file system state to current state if it was mounted with read-write permissions */
	if (!(s->s_flags & MS_RDONLY)) {
		if (!journal_begin(&th, s, 10)) {
			reiserfs_prepare_for_journal(s, SB_BUFFER_WITH_SB(s),
						     1);
			set_sb_umount_state(SB_DISK_SUPER_BLOCK(s),
					    REISERFS_SB(s)->s_mount_state);
			journal_mark_dirty(&th, s, SB_BUFFER_WITH_SB(s));
		}
	}

	/* note, journal_release checks for readonly mount, and can decide not
	 ** to do a journal_end
	 */
	journal_release(&th, s);

	for (i = 0; i < SB_BMAP_NR(s); i++)
		brelse(SB_AP_BITMAP(s)[i].bh);

	vfree(SB_AP_BITMAP(s));

	brelse(SB_BUFFER_WITH_SB(s));

	print_statistics(s);

	if (REISERFS_SB(s)->reserved_blocks != 0) {
		reiserfs_warning(s,
				 "green-2005: reiserfs_put_super: reserved blocks left %d",
				 REISERFS_SB(s)->reserved_blocks);
	}

	reiserfs_proc_info_done(s);

	kfree(s->s_fs_info);
	s->s_fs_info = NULL;

	return;
}

static kmem_cache_t *reiserfs_inode_cachep;

static struct inode *reiserfs_alloc_inode(struct super_block *sb)
{
	struct reiserfs_inode_info *ei;
	ei = (struct reiserfs_inode_info *)
	    kmem_cache_alloc(reiserfs_inode_cachep, SLAB_KERNEL);
	if (!ei)
		return NULL;
	return &ei->vfs_inode;
}

static void reiserfs_destroy_inode(struct inode *inode)
{
	kmem_cache_free(reiserfs_inode_cachep, REISERFS_I(inode));
}

static void init_once(void *foo, kmem_cache_t * cachep, unsigned long flags)
{
	struct reiserfs_inode_info *ei = (struct reiserfs_inode_info *)foo;

	if ((flags & (SLAB_CTOR_VERIFY | SLAB_CTOR_CONSTRUCTOR)) ==
	    SLAB_CTOR_CONSTRUCTOR) {
		INIT_LIST_HEAD(&ei->i_prealloc_list);
		inode_init_once(&ei->vfs_inode);
		ei->i_acl_access = NULL;
		ei->i_acl_default = NULL;
	}
}

static int init_inodecache(void)
{
	reiserfs_inode_cachep = kmem_cache_create("reiser_inode_cache",
						  sizeof(struct
							 reiserfs_inode_info),
						  0, (SLAB_RECLAIM_ACCOUNT|
							SLAB_MEM_SPREAD),
						  init_once, NULL);
	if (reiserfs_inode_cachep == NULL)
		return -ENOMEM;
	return 0;
}

static void destroy_inodecache(void)
{
	if (kmem_cache_destroy(reiserfs_inode_cachep))
		reiserfs_warning(NULL,
				 "reiserfs_inode_cache: not all structures were freed");
}

/* we don't mark inodes dirty, we just log them */
static void reiserfs_dirty_inode(struct inode *inode)
{
	struct reiserfs_transaction_handle th;

	int err = 0;
	if (inode->i_sb->s_flags & MS_RDONLY) {
		reiserfs_warning(inode->i_sb,
				 "clm-6006: writing inode %lu on readonly FS",
				 inode->i_ino);
		return;
	}
	reiserfs_write_lock(inode->i_sb);

	/* this is really only used for atime updates, so they don't have
	 ** to be included in O_SYNC or fsync
	 */
	err = journal_begin(&th, inode->i_sb, 1);
	if (err) {
		reiserfs_write_unlock(inode->i_sb);
		return;
	}
	reiserfs_update_sd(&th, inode);
	journal_end(&th, inode->i_sb, 1);
	reiserfs_write_unlock(inode->i_sb);
}

static void reiserfs_clear_inode(struct inode *inode)
{
	struct posix_acl *acl;

	acl = REISERFS_I(inode)->i_acl_access;
	if (acl && !IS_ERR(acl))
		posix_acl_release(acl);
	REISERFS_I(inode)->i_acl_access = NULL;

	acl = REISERFS_I(inode)->i_acl_default;
	if (acl && !IS_ERR(acl))
		posix_acl_release(acl);
	REISERFS_I(inode)->i_acl_default = NULL;
}

#ifdef CONFIG_QUOTA
static ssize_t reiserfs_quota_write(struct super_block *, int, const char *,
				    size_t, loff_t);
static ssize_t reiserfs_quota_read(struct super_block *, int, char *, size_t,
				   loff_t);
#endif

static struct super_operations reiserfs_sops = {
	.alloc_inode = reiserfs_alloc_inode,
	.destroy_inode = reiserfs_destroy_inode,
	.write_inode = reiserfs_write_inode,
	.dirty_inode = reiserfs_dirty_inode,
	.delete_inode = reiserfs_delete_inode,
	.clear_inode = reiserfs_clear_inode,
	.put_super = reiserfs_put_super,
	.write_super = reiserfs_write_super,
	.sync_fs = reiserfs_sync_fs,
	.write_super_lockfs = reiserfs_write_super_lockfs,
	.unlockfs = reiserfs_unlockfs,
	.statfs = reiserfs_statfs,
	.remount_fs = reiserfs_remount,
#ifdef CONFIG_QUOTA
	.quota_read = reiserfs_quota_read,
	.quota_write = reiserfs_quota_write,
#endif
};

#ifdef CONFIG_QUOTA
#define QTYPE2NAME(t) ((t)==USRQUOTA?"user":"group")

static int reiserfs_dquot_initialize(struct inode *, int);
static int reiserfs_dquot_drop(struct inode *);
static int reiserfs_write_dquot(struct dquot *);
static int reiserfs_acquire_dquot(struct dquot *);
static int reiserfs_release_dquot(struct dquot *);
static int reiserfs_mark_dquot_dirty(struct dquot *);
static int reiserfs_write_info(struct super_block *, int);
static int reiserfs_quota_on(struct super_block *, int, int, char *);

static struct dquot_operations reiserfs_quota_operations = {
	.initialize = reiserfs_dquot_initialize,
	.drop = reiserfs_dquot_drop,
	.alloc_space = dquot_alloc_space,
	.alloc_inode = dquot_alloc_inode,
	.free_space = dquot_free_space,
	.free_inode = dquot_free_inode,
	.transfer = dquot_transfer,
	.write_dquot = reiserfs_write_dquot,
	.acquire_dquot = reiserfs_acquire_dquot,
	.release_dquot = reiserfs_release_dquot,
	.mark_dirty = reiserfs_mark_dquot_dirty,
	.write_info = reiserfs_write_info,
};

static struct quotactl_ops reiserfs_qctl_operations = {
	.quota_on = reiserfs_quota_on,
	.quota_off = vfs_quota_off,
	.quota_sync = vfs_quota_sync,
	.get_info = vfs_get_dqinfo,
	.set_info = vfs_set_dqinfo,
	.get_dqblk = vfs_get_dqblk,
	.set_dqblk = vfs_set_dqblk,
};
#endif

static struct export_operations reiserfs_export_ops = {
	.encode_fh = reiserfs_encode_fh,
	.decode_fh = reiserfs_decode_fh,
	.get_parent = reiserfs_get_parent,
	.get_dentry = reiserfs_get_dentry,
};

/* this struct is used in reiserfs_getopt () for containing the value for those
   mount options that have values rather than being toggles. */
typedef struct {
	char *value;
	int setmask;		/* bitmask which is to set on mount_options bitmask when this
				   value is found, 0 is no bits are to be changed. */
	int clrmask;		/* bitmask which is to clear on mount_options bitmask when  this
				   value is found, 0 is no bits are to be changed. This is
				   applied BEFORE setmask */
} arg_desc_t;

/* Set this bit in arg_required to allow empty arguments */
#define REISERFS_OPT_ALLOWEMPTY 31

/* this struct is used in reiserfs_getopt() for describing the set of reiserfs
   mount options */
typedef struct {
	char *option_name;
	int arg_required;	/* 0 if argument is not required, not 0 otherwise */
	const arg_desc_t *values;	/* list of values accepted by an option */
	int setmask;		/* bitmask which is to set on mount_options bitmask when this
				   value is found, 0 is no bits are to be changed. */
	int clrmask;		/* bitmask which is to clear on mount_options bitmask when  this
				   value is found, 0 is no bits are to be changed. This is
				   applied BEFORE setmask */
} opt_desc_t;

/* possible values for -o data= */
static const arg_desc_t logging_mode[] = {
	{"ordered", 1 << REISERFS_DATA_ORDERED,
	 (1 << REISERFS_DATA_LOG | 1 << REISERFS_DATA_WRITEBACK)},
	{"journal", 1 << REISERFS_DATA_LOG,
	 (1 << REISERFS_DATA_ORDERED | 1 << REISERFS_DATA_WRITEBACK)},
	{"writeback", 1 << REISERFS_DATA_WRITEBACK,
	 (1 << REISERFS_DATA_ORDERED | 1 << REISERFS_DATA_LOG)},
	{NULL, 0}
};

/* possible values for -o barrier= */
static const arg_desc_t barrier_mode[] = {
	{"none", 1 << REISERFS_BARRIER_NONE, 1 << REISERFS_BARRIER_FLUSH},
	{"flush", 1 << REISERFS_BARRIER_FLUSH, 1 << REISERFS_BARRIER_NONE},
	{NULL, 0}
};

/* possible values for "-o block-allocator=" and bits which are to be set in
   s_mount_opt of reiserfs specific part of in-core super block */
static const arg_desc_t balloc[] = {
	{"noborder", 1 << REISERFS_NO_BORDER, 0},
	{"border", 0, 1 << REISERFS_NO_BORDER},
	{"no_unhashed_relocation", 1 << REISERFS_NO_UNHASHED_RELOCATION, 0},
	{"hashed_relocation", 1 << REISERFS_HASHED_RELOCATION, 0},
	{"test4", 1 << REISERFS_TEST4, 0},
	{"notest4", 0, 1 << REISERFS_TEST4},
	{NULL, 0, 0}
};

static const arg_desc_t tails[] = {
	{"on", 1 << REISERFS_LARGETAIL, 1 << REISERFS_SMALLTAIL},
	{"off", 0, (1 << REISERFS_LARGETAIL) | (1 << REISERFS_SMALLTAIL)},
	{"small", 1 << REISERFS_SMALLTAIL, 1 << REISERFS_LARGETAIL},
	{NULL, 0, 0}
};

static const arg_desc_t error_actions[] = {
	{"panic", 1 << REISERFS_ERROR_PANIC,
	 (1 << REISERFS_ERROR_RO | 1 << REISERFS_ERROR_CONTINUE)},
	{"ro-remount", 1 << REISERFS_ERROR_RO,
	 (1 << REISERFS_ERROR_PANIC | 1 << REISERFS_ERROR_CONTINUE)},
#ifdef REISERFS_JOURNAL_ERROR_ALLOWS_NO_LOG
	{"continue", 1 << REISERFS_ERROR_CONTINUE,
	 (1 << REISERFS_ERROR_PANIC | 1 << REISERFS_ERROR_RO)},
#endif
	{NULL, 0, 0},
};

int reiserfs_default_io_size = 128 * 1024;	/* Default recommended I/O size is 128k.
						   There might be broken applications that are
						   confused by this. Use nolargeio mount option
						   to get usual i/o size = PAGE_SIZE.
						 */

/* proceed only one option from a list *cur - string containing of mount options
   opts - array of options which are accepted
   opt_arg - if option is found and requires an argument and if it is specifed
   in the input - pointer to the argument is stored here
   bit_flags - if option requires to set a certain bit - it is set here
   return -1 if unknown option is found, opt->arg_required otherwise */
static int reiserfs_getopt(struct super_block *s, char **cur, opt_desc_t * opts,
			   char **opt_arg, unsigned long *bit_flags)
{
	char *p;
	/* foo=bar, 
	   ^   ^  ^
	   |   |  +-- option_end
	   |   +-- arg_start
	   +-- option_start
	 */
	const opt_desc_t *opt;
	const arg_desc_t *arg;

	p = *cur;

	/* assume argument cannot contain commas */
	*cur = strchr(p, ',');
	if (*cur) {
		*(*cur) = '\0';
		(*cur)++;
	}

	if (!strncmp(p, "alloc=", 6)) {
		/* Ugly special case, probably we should redo options parser so that
		   it can understand several arguments for some options, also so that
		   it can fill several bitfields with option values. */
		if (reiserfs_parse_alloc_options(s, p + 6)) {
			return -1;
		} else {
			return 0;
		}
	}

	/* for every option in the list */
	for (opt = opts; opt->option_name; opt++) {
		if (!strncmp(p, opt->option_name, strlen(opt->option_name))) {
			if (bit_flags) {
				if (opt->clrmask ==
				    (1 << REISERFS_UNSUPPORTED_OPT))
					reiserfs_warning(s, "%s not supported.",
							 p);
				else
					*bit_flags &= ~opt->clrmask;
				if (opt->setmask ==
				    (1 << REISERFS_UNSUPPORTED_OPT))
					reiserfs_warning(s, "%s not supported.",
							 p);
				else
					*bit_flags |= opt->setmask;
			}
			break;
		}
	}
	if (!opt->option_name) {
		reiserfs_warning(s, "unknown mount option \"%s\"", p);
		return -1;
	}

	p += strlen(opt->option_name);
	switch (*p) {
	case '=':
		if (!opt->arg_required) {
			reiserfs_warning(s,
					 "the option \"%s\" does not require an argument",
					 opt->option_name);
			return -1;
		}
		break;

	case 0:
		if (opt->arg_required) {
			reiserfs_warning(s,
					 "the option \"%s\" requires an argument",
					 opt->option_name);
			return -1;
		}
		break;
	default:
		reiserfs_warning(s, "head of option \"%s\" is only correct",
				 opt->option_name);
		return -1;
	}

	/* move to the argument, or to next option if argument is not required */
	p++;

	if (opt->arg_required
	    && !(opt->arg_required & (1 << REISERFS_OPT_ALLOWEMPTY))
	    && !strlen(p)) {
		/* this catches "option=," if not allowed */
		reiserfs_warning(s, "empty argument for \"%s\"",
				 opt->option_name);
		return -1;
	}

	if (!opt->values) {
		/* *=NULLopt_arg contains pointer to argument */
		*opt_arg = p;
		return opt->arg_required & ~(1 << REISERFS_OPT_ALLOWEMPTY);
	}

	/* values possible for this option are listed in opt->values */
	for (arg = opt->values; arg->value; arg++) {
		if (!strcmp(p, arg->value)) {
			if (bit_flags) {
				*bit_flags &= ~arg->clrmask;
				*bit_flags |= arg->setmask;
			}
			return opt->arg_required;
		}
	}

	reiserfs_warning(s, "bad value \"%s\" for option \"%s\"", p,
			 opt->option_name);
	return -1;
}

/* returns 0 if something is wrong in option string, 1 - otherwise */
static int reiserfs_parse_options(struct super_block *s, char *options,	/* string given via mount's -o */
				  unsigned long *mount_options,
				  /* after the parsing phase, contains the
				     collection of bitflags defining what
				     mount options were selected. */
				  unsigned long *blocks,	/* strtol-ed from NNN of resize=NNN */
				  char **jdev_name,
				  unsigned int *commit_max_age)
{
	int c;
	char *arg = NULL;
	char *pos;
	opt_desc_t opts[] = {
		/* Compatibility stuff, so that -o notail for old setups still work */
		{"tails",.arg_required = 't',.values = tails},
		{"notail",.clrmask =
		 (1 << REISERFS_LARGETAIL) | (1 << REISERFS_SMALLTAIL)},
		{"conv",.setmask = 1 << REISERFS_CONVERT},
		{"attrs",.setmask = 1 << REISERFS_ATTRS},
		{"noattrs",.clrmask = 1 << REISERFS_ATTRS},
#ifdef CONFIG_REISERFS_FS_XATTR
		{"user_xattr",.setmask = 1 << REISERFS_XATTRS_USER},
		{"nouser_xattr",.clrmask = 1 << REISERFS_XATTRS_USER},
#else
		{"user_xattr",.setmask = 1 << REISERFS_UNSUPPORTED_OPT},
		{"nouser_xattr",.clrmask = 1 << REISERFS_UNSUPPORTED_OPT},
#endif
#ifdef CONFIG_REISERFS_FS_POSIX_ACL
		{"acl",.setmask = 1 << REISERFS_POSIXACL},
		{"noacl",.clrmask = 1 << REISERFS_POSIXACL},
#else
		{"acl",.setmask = 1 << REISERFS_UNSUPPORTED_OPT},
		{"noacl",.clrmask = 1 << REISERFS_UNSUPPORTED_OPT},
#endif
		{"nolog",},	/* This is unsupported */
		{"replayonly",.setmask = 1 << REPLAYONLY},
		{"block-allocator",.arg_required = 'a',.values = balloc},
		{"data",.arg_required = 'd',.values = logging_mode},
		{"barrier",.arg_required = 'b',.values = barrier_mode},
		{"resize",.arg_required = 'r',.values = NULL},
		{"jdev",.arg_required = 'j',.values = NULL},
		{"nolargeio",.arg_required = 'w',.values = NULL},
		{"commit",.arg_required = 'c',.values = NULL},
		{"usrquota",.setmask = 1 << REISERFS_QUOTA},
		{"grpquota",.setmask = 1 << REISERFS_QUOTA},
		{"noquota",.clrmask = 1 << REISERFS_QUOTA},
		{"errors",.arg_required = 'e',.values = error_actions},
		{"usrjquota",.arg_required =
		 'u' | (1 << REISERFS_OPT_ALLOWEMPTY),.values = NULL},
		{"grpjquota",.arg_required =
		 'g' | (1 << REISERFS_OPT_ALLOWEMPTY),.values = NULL},
		{"jqfmt",.arg_required = 'f',.values = NULL},
		{NULL,}
	};

	*blocks = 0;
	if (!options || !*options)
		/* use default configuration: create tails, journaling on, no
		   conversion to newest format */
		return 1;

	for (pos = options; pos;) {
		c = reiserfs_getopt(s, &pos, opts, &arg, mount_options);
		if (c == -1)
			/* wrong option is given */
			return 0;

		if (c == 'r') {
			char *p;

			p = NULL;
			/* "resize=NNN" or "resize=auto" */

			if (!strcmp(arg, "auto")) {
				/* From JFS code, to auto-get the size. */
				*blocks =
				    s->s_bdev->bd_inode->i_size >> s->
				    s_blocksize_bits;
			} else {
				*blocks = simple_strtoul(arg, &p, 0);
				if (*p != '\0') {
					/* NNN does not look like a number */
					reiserfs_warning(s,
							 "reiserfs_parse_options: bad value %s",
							 arg);
					return 0;
				}
			}
		}

		if (c == 'c') {
			char *p = NULL;
			unsigned long val = simple_strtoul(arg, &p, 0);
			/* commit=NNN (time in seconds) */
			if (*p != '\0' || val >= (unsigned int)-1) {
				reiserfs_warning(s,
						 "reiserfs_parse_options: bad value %s",
						 arg);
				return 0;
			}
			*commit_max_age = (unsigned int)val;
		}

		if (c == 'w') {
			char *p = NULL;
			int val = simple_strtoul(arg, &p, 0);

			if (*p != '\0') {
				reiserfs_warning(s,
						 "reiserfs_parse_options: non-numeric value %s for nolargeio option",
						 arg);
				return 0;
			}
			if (val)
				reiserfs_default_io_size = PAGE_SIZE;
			else
				reiserfs_default_io_size = 128 * 1024;
		}

		if (c == 'j') {
			if (arg && *arg && jdev_name) {
				if (*jdev_name) {	//Hm, already assigned?
					reiserfs_warning(s,
							 "reiserfs_parse_options: journal device was already  specified to be %s",
							 *jdev_name);
					return 0;
				}
				*jdev_name = arg;
			}
		}
#ifdef CONFIG_QUOTA
		if (c == 'u' || c == 'g') {
			int qtype = c == 'u' ? USRQUOTA : GRPQUOTA;

			if (sb_any_quota_enabled(s)) {
				reiserfs_warning(s,
						 "reiserfs_parse_options: cannot change journalled quota options when quota turned on.");
				return 0;
			}
			if (*arg) {	/* Some filename specified? */
				if (REISERFS_SB(s)->s_qf_names[qtype]
				    && strcmp(REISERFS_SB(s)->s_qf_names[qtype],
					      arg)) {
					reiserfs_warning(s,
							 "reiserfs_parse_options: %s quota file already specified.",
							 QTYPE2NAME(qtype));
					return 0;
				}
				if (strchr(arg, '/')) {
					reiserfs_warning(s,
							 "reiserfs_parse_options: quotafile must be on filesystem root.");
					return 0;
				}
				REISERFS_SB(s)->s_qf_names[qtype] =
				    kmalloc(strlen(arg) + 1, GFP_KERNEL);
				if (!REISERFS_SB(s)->s_qf_names[qtype]) {
					reiserfs_warning(s,
							 "reiserfs_parse_options: not enough memory for storing quotafile name.");
					return 0;
				}
				strcpy(REISERFS_SB(s)->s_qf_names[qtype], arg);
				*mount_options |= 1 << REISERFS_QUOTA;
			} else {
				kfree(REISERFS_SB(s)->s_qf_names[qtype]);
				REISERFS_SB(s)->s_qf_names[qtype] = NULL;
			}
		}
		if (c == 'f') {
			if (!strcmp(arg, "vfsold"))
				REISERFS_SB(s)->s_jquota_fmt = QFMT_VFS_OLD;
			else if (!strcmp(arg, "vfsv0"))
				REISERFS_SB(s)->s_jquota_fmt = QFMT_VFS_V0;
			else {
				reiserfs_warning(s,
						 "reiserfs_parse_options: unknown quota format specified.");
				return 0;
			}
		}
#else
		if (c == 'u' || c == 'g' || c == 'f') {
			reiserfs_warning(s,
					 "reiserfs_parse_options: journalled quota options not supported.");
			return 0;
		}
#endif
	}

#ifdef CONFIG_QUOTA
	if (!REISERFS_SB(s)->s_jquota_fmt
	    && (REISERFS_SB(s)->s_qf_names[USRQUOTA]
		|| REISERFS_SB(s)->s_qf_names[GRPQUOTA])) {
		reiserfs_warning(s,
				 "reiserfs_parse_options: journalled quota format not specified.");
		return 0;
	}
	/* This checking is not precise wrt the quota type but for our purposes it is sufficient */
	if (!(*mount_options & (1 << REISERFS_QUOTA))
	    && sb_any_quota_enabled(s)) {
		reiserfs_warning(s,
				 "reiserfs_parse_options: quota options must be present when quota is turned on.");
		return 0;
	}
#endif

	return 1;
}

static void switch_data_mode(struct super_block *s, unsigned long mode)
{
	REISERFS_SB(s)->s_mount_opt &= ~((1 << REISERFS_DATA_LOG) |
					 (1 << REISERFS_DATA_ORDERED) |
					 (1 << REISERFS_DATA_WRITEBACK));
	REISERFS_SB(s)->s_mount_opt |= (1 << mode);
}

static void handle_data_mode(struct super_block *s, unsigned long mount_options)
{
	if (mount_options & (1 << REISERFS_DATA_LOG)) {
		if (!reiserfs_data_log(s)) {
			switch_data_mode(s, REISERFS_DATA_LOG);
			reiserfs_info(s, "switching to journaled data mode\n");
		}
	} else if (mount_options & (1 << REISERFS_DATA_ORDERED)) {
		if (!reiserfs_data_ordered(s)) {
			switch_data_mode(s, REISERFS_DATA_ORDERED);
			reiserfs_info(s, "switching to ordered data mode\n");
		}
	} else if (mount_options & (1 << REISERFS_DATA_WRITEBACK)) {
		if (!reiserfs_data_writeback(s)) {
			switch_data_mode(s, REISERFS_DATA_WRITEBACK);
			reiserfs_info(s, "switching to writeback data mode\n");
		}
	}
}

static void handle_barrier_mode(struct super_block *s, unsigned long bits)
{
	int flush = (1 << REISERFS_BARRIER_FLUSH);
	int none = (1 << REISERFS_BARRIER_NONE);
	int all_barrier = flush | none;

	if (bits & all_barrier) {
		REISERFS_SB(s)->s_mount_opt &= ~all_barrier;
		if (bits & flush) {
			REISERFS_SB(s)->s_mount_opt |= flush;
			printk("reiserfs: enabling write barrier flush mode\n");
		} else if (bits & none) {
			REISERFS_SB(s)->s_mount_opt |= none;
			printk("reiserfs: write barriers turned off\n");
		}
	}
}

static void handle_attrs(struct super_block *s)
{
	struct reiserfs_super_block *rs = SB_DISK_SUPER_BLOCK(s);

	if (reiserfs_attrs(s)) {
		if (old_format_only(s)) {
			reiserfs_warning(s,
					 "reiserfs: cannot support attributes on 3.5.x disk format");
			REISERFS_SB(s)->s_mount_opt &= ~(1 << REISERFS_ATTRS);
			return;
		}
		if (!(le32_to_cpu(rs->s_flags) & reiserfs_attrs_cleared)) {
			reiserfs_warning(s,
					 "reiserfs: cannot support attributes until flag is set in super-block");
			REISERFS_SB(s)->s_mount_opt &= ~(1 << REISERFS_ATTRS);
		}
	}
}

static int reiserfs_remount(struct super_block *s, int *mount_flags, char *arg)
{
	struct reiserfs_super_block *rs;
	struct reiserfs_transaction_handle th;
	unsigned long blocks;
	unsigned long mount_options = REISERFS_SB(s)->s_mount_opt;
	unsigned long safe_mask = 0;
	unsigned int commit_max_age = (unsigned int)-1;
	struct reiserfs_journal *journal = SB_JOURNAL(s);
	int err;
#ifdef CONFIG_QUOTA
	int i;
#endif

	rs = SB_DISK_SUPER_BLOCK(s);

	if (!reiserfs_parse_options
	    (s, arg, &mount_options, &blocks, NULL, &commit_max_age)) {
#ifdef CONFIG_QUOTA
		for (i = 0; i < MAXQUOTAS; i++) {
			kfree(REISERFS_SB(s)->s_qf_names[i]);
			REISERFS_SB(s)->s_qf_names[i] = NULL;
		}
#endif
		return -EINVAL;
	}

	handle_attrs(s);

	/* Add options that are safe here */
	safe_mask |= 1 << REISERFS_SMALLTAIL;
	safe_mask |= 1 << REISERFS_LARGETAIL;
	safe_mask |= 1 << REISERFS_NO_BORDER;
	safe_mask |= 1 << REISERFS_NO_UNHASHED_RELOCATION;
	safe_mask |= 1 << REISERFS_HASHED_RELOCATION;
	safe_mask |= 1 << REISERFS_TEST4;
	safe_mask |= 1 << REISERFS_ATTRS;
	safe_mask |= 1 << REISERFS_XATTRS_USER;
	safe_mask |= 1 << REISERFS_POSIXACL;
	safe_mask |= 1 << REISERFS_BARRIER_FLUSH;
	safe_mask |= 1 << REISERFS_BARRIER_NONE;
	safe_mask |= 1 << REISERFS_ERROR_RO;
	safe_mask |= 1 << REISERFS_ERROR_CONTINUE;
	safe_mask |= 1 << REISERFS_ERROR_PANIC;
	safe_mask |= 1 << REISERFS_QUOTA;

	/* Update the bitmask, taking care to keep
	 * the bits we're not allowed to change here */
	REISERFS_SB(s)->s_mount_opt =
	    (REISERFS_SB(s)->
	     s_mount_opt & ~safe_mask) | (mount_options & safe_mask);

	if (commit_max_age != 0 && commit_max_age != (unsigned int)-1) {
		journal->j_max_commit_age = commit_max_age;
		journal->j_max_trans_age = commit_max_age;
	} else if (commit_max_age == 0) {
		/* 0 means restore defaults. */
		journal->j_max_commit_age = journal->j_default_max_commit_age;
		journal->j_max_trans_age = JOURNAL_MAX_TRANS_AGE;
	}

	if (blocks) {
		int rc = reiserfs_resize(s, blocks);
		if (rc != 0)
			return rc;
	}

	if (*mount_flags & MS_RDONLY) {
		reiserfs_xattr_init(s, *mount_flags);
		/* remount read-only */
		if (s->s_flags & MS_RDONLY)
			/* it is read-only already */
			return 0;
		/* try to remount file system with read-only permissions */
		if (sb_umount_state(rs) == REISERFS_VALID_FS
		    || REISERFS_SB(s)->s_mount_state != REISERFS_VALID_FS) {
			return 0;
		}

		err = journal_begin(&th, s, 10);
		if (err)
			return err;

		/* Mounting a rw partition read-only. */
		reiserfs_prepare_for_journal(s, SB_BUFFER_WITH_SB(s), 1);
		set_sb_umount_state(rs, REISERFS_SB(s)->s_mount_state);
		journal_mark_dirty(&th, s, SB_BUFFER_WITH_SB(s));
	} else {
		/* remount read-write */
		if (!(s->s_flags & MS_RDONLY)) {
			reiserfs_xattr_init(s, *mount_flags);
			return 0;	/* We are read-write already */
		}

		if (reiserfs_is_journal_aborted(journal))
			return journal->j_errno;

		handle_data_mode(s, mount_options);
		handle_barrier_mode(s, mount_options);
		REISERFS_SB(s)->s_mount_state = sb_umount_state(rs);
		s->s_flags &= ~MS_RDONLY;	/* now it is safe to call journal_begin */
		err = journal_begin(&th, s, 10);
		if (err)
			return err;

		/* Mount a partition which is read-only, read-write */
		reiserfs_prepare_for_journal(s, SB_BUFFER_WITH_SB(s), 1);
		REISERFS_SB(s)->s_mount_state = sb_umount_state(rs);
		s->s_flags &= ~MS_RDONLY;
		set_sb_umount_state(rs, REISERFS_ERROR_FS);
		/* mark_buffer_dirty (SB_BUFFER_WITH_SB (s), 1); */
		journal_mark_dirty(&th, s, SB_BUFFER_WITH_SB(s));
		REISERFS_SB(s)->s_mount_state = REISERFS_VALID_FS;
	}
	/* this will force a full flush of all journal lists */
	SB_JOURNAL(s)->j_must_wait = 1;
	err = journal_end(&th, s, 10);
	if (err)
		return err;
	s->s_dirt = 0;

	if (!(*mount_flags & MS_RDONLY)) {
		finish_unfinished(s);
		reiserfs_xattr_init(s, *mount_flags);
	}

	return 0;
}

/* load_bitmap_info_data - Sets up the reiserfs_bitmap_info structure from disk.
 * @sb - superblock for this filesystem
 * @bi - the bitmap info to be loaded. Requires that bi->bh is valid.
 *
 * This routine counts how many free bits there are, finding the first zero
 * as a side effect. Could also be implemented as a loop of test_bit() calls, or
 * a loop of find_first_zero_bit() calls. This implementation is similar to
 * find_first_zero_bit(), but doesn't return after it finds the first bit.
 * Should only be called on fs mount, but should be fairly efficient anyways.
 *
 * bi->first_zero_hint is considered unset if it == 0, since the bitmap itself
 * will * invariably occupt block 0 represented in the bitmap. The only
 * exception to this is when free_count also == 0, since there will be no
 * free blocks at all.
 */

static void load_bitmap_info_data(struct super_block *sb,
				  struct reiserfs_bitmap_info *bi)
{
	unsigned long *cur = (unsigned long *)bi->bh->b_data;

	while ((char *)cur < (bi->bh->b_data + sb->s_blocksize)) {

		/* No need to scan if all 0's or all 1's.
		 * Since we're only counting 0's, we can simply ignore all 1's */
		if (*cur == 0) {
			if (bi->first_zero_hint == 0) {
				bi->first_zero_hint =
				    ((char *)cur - bi->bh->b_data) << 3;
			}
			bi->free_count += sizeof(unsigned long) * 8;
		} else if (*cur != ~0L) {
			int b;
			for (b = 0; b < sizeof(unsigned long) * 8; b++) {
				if (!reiserfs_test_le_bit(b, cur)) {
					bi->free_count++;
					if (bi->first_zero_hint == 0)
						bi->first_zero_hint =
						    (((char *)cur -
						      bi->bh->b_data) << 3) + b;
				}
			}
		}
		cur++;
	}

#ifdef CONFIG_REISERFS_CHECK
// This outputs a lot of unneded info on big FSes
//    reiserfs_warning ("bitmap loaded from block %d: %d free blocks",
//                    bi->bh->b_blocknr, bi->free_count);
#endif
}

static int read_bitmaps(struct super_block *s)
{
	int i, bmap_nr;

	SB_AP_BITMAP(s) =
	    vmalloc(sizeof(struct reiserfs_bitmap_info) * SB_BMAP_NR(s));
	if (SB_AP_BITMAP(s) == 0)
		return 1;
	memset(SB_AP_BITMAP(s), 0,
	       sizeof(struct reiserfs_bitmap_info) * SB_BMAP_NR(s));
	for (i = 0, bmap_nr =
	     REISERFS_DISK_OFFSET_IN_BYTES / s->s_blocksize + 1;
	     i < SB_BMAP_NR(s); i++, bmap_nr = s->s_blocksize * 8 * i) {
		SB_AP_BITMAP(s)[i].bh = sb_getblk(s, bmap_nr);
		if (!buffer_uptodate(SB_AP_BITMAP(s)[i].bh))
			ll_rw_block(READ, 1, &SB_AP_BITMAP(s)[i].bh);
	}
	for (i = 0; i < SB_BMAP_NR(s); i++) {
		wait_on_buffer(SB_AP_BITMAP(s)[i].bh);
		if (!buffer_uptodate(SB_AP_BITMAP(s)[i].bh)) {
			reiserfs_warning(s, "sh-2029: reiserfs read_bitmaps: "
					 "bitmap block (#%lu) reading failed",
					 SB_AP_BITMAP(s)[i].bh->b_blocknr);
			for (i = 0; i < SB_BMAP_NR(s); i++)
				brelse(SB_AP_BITMAP(s)[i].bh);
			vfree(SB_AP_BITMAP(s));
			SB_AP_BITMAP(s) = NULL;
			return 1;
		}
		load_bitmap_info_data(s, SB_AP_BITMAP(s) + i);
	}
	return 0;
}

static int read_old_bitmaps(struct super_block *s)
{
	int i;
	struct reiserfs_super_block *rs = SB_DISK_SUPER_BLOCK(s);
	int bmp1 = (REISERFS_OLD_DISK_OFFSET_IN_BYTES / s->s_blocksize) + 1;	/* first of bitmap blocks */

	/* read true bitmap */
	SB_AP_BITMAP(s) =
	    vmalloc(sizeof(struct reiserfs_buffer_info *) * sb_bmap_nr(rs));
	if (SB_AP_BITMAP(s) == 0)
		return 1;

	memset(SB_AP_BITMAP(s), 0,
	       sizeof(struct reiserfs_buffer_info *) * sb_bmap_nr(rs));

	for (i = 0; i < sb_bmap_nr(rs); i++) {
		SB_AP_BITMAP(s)[i].bh = sb_bread(s, bmp1 + i);
		if (!SB_AP_BITMAP(s)[i].bh)
			return 1;
		load_bitmap_info_data(s, SB_AP_BITMAP(s) + i);
	}

	return 0;
}

static int read_super_block(struct super_block *s, int offset)
{
	struct buffer_head *bh;
	struct reiserfs_super_block *rs;
	int fs_blocksize;

	bh = sb_bread(s, offset / s->s_blocksize);
	if (!bh) {
		reiserfs_warning(s, "sh-2006: read_super_block: "
				 "bread failed (dev %s, block %lu, size %lu)",
				 reiserfs_bdevname(s), offset / s->s_blocksize,
				 s->s_blocksize);
		return 1;
	}

	rs = (struct reiserfs_super_block *)bh->b_data;
	if (!is_any_reiserfs_magic_string(rs)) {
		brelse(bh);
		return 1;
	}
	//
	// ok, reiserfs signature (old or new) found in at the given offset
	//    
	fs_blocksize = sb_blocksize(rs);
	brelse(bh);
	sb_set_blocksize(s, fs_blocksize);

	bh = sb_bread(s, offset / s->s_blocksize);
	if (!bh) {
		reiserfs_warning(s, "sh-2007: read_super_block: "
				 "bread failed (dev %s, block %lu, size %lu)\n",
				 reiserfs_bdevname(s), offset / s->s_blocksize,
				 s->s_blocksize);
		return 1;
	}

	rs = (struct reiserfs_super_block *)bh->b_data;
	if (sb_blocksize(rs) != s->s_blocksize) {
		reiserfs_warning(s, "sh-2011: read_super_block: "
				 "can't find a reiserfs filesystem on (dev %s, block %Lu, size %lu)\n",
				 reiserfs_bdevname(s),
				 (unsigned long long)bh->b_blocknr,
				 s->s_blocksize);
		brelse(bh);
		return 1;
	}

	if (rs->s_v1.s_root_block == cpu_to_le32(-1)) {
		brelse(bh);
		reiserfs_warning(s,
				 "Unfinished reiserfsck --rebuild-tree run detected. Please run\n"
				 "reiserfsck --rebuild-tree and wait for a completion. If that fails\n"
				 "get newer reiserfsprogs package");
		return 1;
	}

	SB_BUFFER_WITH_SB(s) = bh;
	SB_DISK_SUPER_BLOCK(s) = rs;

	if (is_reiserfs_jr(rs)) {
		/* magic is of non-standard journal filesystem, look at s_version to
		   find which format is in use */
		if (sb_version(rs) == REISERFS_VERSION_2)
			reiserfs_warning(s,
					 "read_super_block: found reiserfs format \"3.6\""
					 " with non-standard journal");
		else if (sb_version(rs) == REISERFS_VERSION_1)
			reiserfs_warning(s,
					 "read_super_block: found reiserfs format \"3.5\""
					 " with non-standard journal");
		else {
			reiserfs_warning(s,
					 "sh-2012: read_super_block: found unknown "
					 "format \"%u\" of reiserfs with non-standard magic",
					 sb_version(rs));
			return 1;
		}
	} else
		/* s_version of standard format may contain incorrect information,
		   so we just look at the magic string */
		reiserfs_info(s,
			      "found reiserfs format \"%s\" with standard journal\n",
			      is_reiserfs_3_5(rs) ? "3.5" : "3.6");

	s->s_op = &reiserfs_sops;
	s->s_export_op = &reiserfs_export_ops;
#ifdef CONFIG_QUOTA
	s->s_qcop = &reiserfs_qctl_operations;
	s->dq_op = &reiserfs_quota_operations;
#endif

	/* new format is limited by the 32 bit wide i_blocks field, want to
	 ** be one full block below that.
	 */
	s->s_maxbytes = (512LL << 32) - s->s_blocksize;
	return 0;
}

/* after journal replay, reread all bitmap and super blocks */
static int reread_meta_blocks(struct super_block *s)
{
	int i;
	ll_rw_block(READ, 1, &(SB_BUFFER_WITH_SB(s)));
	wait_on_buffer(SB_BUFFER_WITH_SB(s));
	if (!buffer_uptodate(SB_BUFFER_WITH_SB(s))) {
		reiserfs_warning(s,
				 "reread_meta_blocks, error reading the super");
		return 1;
	}

	for (i = 0; i < SB_BMAP_NR(s); i++) {
		ll_rw_block(READ, 1, &(SB_AP_BITMAP(s)[i].bh));
		wait_on_buffer(SB_AP_BITMAP(s)[i].bh);
		if (!buffer_uptodate(SB_AP_BITMAP(s)[i].bh)) {
			reiserfs_warning(s,
					 "reread_meta_blocks, error reading bitmap block number %d at %llu",
					 i,
					 (unsigned long long)SB_AP_BITMAP(s)[i].
					 bh->b_blocknr);
			return 1;
		}
	}
	return 0;

}

/////////////////////////////////////////////////////
// hash detection stuff

// if root directory is empty - we set default - Yura's - hash and
// warn about it
// FIXME: we look for only one name in a directory. If tea and yura
// bith have the same value - we ask user to send report to the
// mailing list
static __u32 find_hash_out(struct super_block *s)
{
	int retval;
	struct inode *inode;
	struct cpu_key key;
	INITIALIZE_PATH(path);
	struct reiserfs_dir_entry de;
	__u32 hash = DEFAULT_HASH;

	inode = s->s_root->d_inode;

	do {			// Some serious "goto"-hater was there ;)
		u32 teahash, r5hash, yurahash;

		make_cpu_key(&key, inode, ~0, TYPE_DIRENTRY, 3);
		retval = search_by_entry_key(s, &key, &path, &de);
		if (retval == IO_ERROR) {
			pathrelse(&path);
			return UNSET_HASH;
		}
		if (retval == NAME_NOT_FOUND)
			de.de_entry_num--;
		set_de_name_and_namelen(&de);
		if (deh_offset(&(de.de_deh[de.de_entry_num])) == DOT_DOT_OFFSET) {
			/* allow override in this case */
			if (reiserfs_rupasov_hash(s)) {
				hash = YURA_HASH;
			}
			reiserfs_warning(s, "FS seems to be empty, autodetect "
					 "is using the default hash");
			break;
		}
		r5hash = GET_HASH_VALUE(r5_hash(de.de_name, de.de_namelen));
		teahash = GET_HASH_VALUE(keyed_hash(de.de_name, de.de_namelen));
		yurahash = GET_HASH_VALUE(yura_hash(de.de_name, de.de_namelen));
		if (((teahash == r5hash)
		     &&
		     (GET_HASH_VALUE(deh_offset(&(de.de_deh[de.de_entry_num])))
		      == r5hash)) || ((teahash == yurahash)
				      && (yurahash ==
					  GET_HASH_VALUE(deh_offset
							 (&
							  (de.
							   de_deh[de.
								  de_entry_num])))))
		    || ((r5hash == yurahash)
			&& (yurahash ==
			    GET_HASH_VALUE(deh_offset
					   (&(de.de_deh[de.de_entry_num])))))) {
			reiserfs_warning(s,
					 "Unable to automatically detect hash function. "
					 "Please mount with -o hash={tea,rupasov,r5}",
					 reiserfs_bdevname(s));
			hash = UNSET_HASH;
			break;
		}
		if (GET_HASH_VALUE(deh_offset(&(de.de_deh[de.de_entry_num]))) ==
		    yurahash)
			hash = YURA_HASH;
		else if (GET_HASH_VALUE
			 (deh_offset(&(de.de_deh[de.de_entry_num]))) == teahash)
			hash = TEA_HASH;
		else if (GET_HASH_VALUE
			 (deh_offset(&(de.de_deh[de.de_entry_num]))) == r5hash)
			hash = R5_HASH;
		else {
			reiserfs_warning(s, "Unrecognised hash function");
			hash = UNSET_HASH;
		}
	} while (0);

	pathrelse(&path);
	return hash;
}

// finds out which hash names are sorted with
static int what_hash(struct super_block *s)
{
	__u32 code;

	code = sb_hash_function_code(SB_DISK_SUPER_BLOCK(s));

	/* reiserfs_hash_detect() == true if any of the hash mount options
	 ** were used.  We must check them to make sure the user isn't
	 ** using a bad hash value
	 */
	if (code == UNSET_HASH || reiserfs_hash_detect(s))
		code = find_hash_out(s);

	if (code != UNSET_HASH && reiserfs_hash_detect(s)) {
		/* detection has found the hash, and we must check against the 
		 ** mount options 
		 */
		if (reiserfs_rupasov_hash(s) && code != YURA_HASH) {
			reiserfs_warning(s, "Error, %s hash detected, "
					 "unable to force rupasov hash",
					 reiserfs_hashname(code));
			code = UNSET_HASH;
		} else if (reiserfs_tea_hash(s) && code != TEA_HASH) {
			reiserfs_warning(s, "Error, %s hash detected, "
					 "unable to force tea hash",
					 reiserfs_hashname(code));
			code = UNSET_HASH;
		} else if (reiserfs_r5_hash(s) && code != R5_HASH) {
			reiserfs_warning(s, "Error, %s hash detected, "
					 "unable to force r5 hash",
					 reiserfs_hashname(code));
			code = UNSET_HASH;
		}
	} else {
		/* find_hash_out was not called or could not determine the hash */
		if (reiserfs_rupasov_hash(s)) {
			code = YURA_HASH;
		} else if (reiserfs_tea_hash(s)) {
			code = TEA_HASH;
		} else if (reiserfs_r5_hash(s)) {
			code = R5_HASH;
		}
	}

	/* if we are mounted RW, and we have a new valid hash code, update 
	 ** the super
	 */
	if (code != UNSET_HASH &&
	    !(s->s_flags & MS_RDONLY) &&
	    code != sb_hash_function_code(SB_DISK_SUPER_BLOCK(s))) {
		set_sb_hash_function_code(SB_DISK_SUPER_BLOCK(s), code);
	}
	return code;
}

// return pointer to appropriate function
static hashf_t hash_function(struct super_block *s)
{
	switch (what_hash(s)) {
	case TEA_HASH:
		reiserfs_info(s, "Using tea hash to sort names\n");
		return keyed_hash;
	case YURA_HASH:
		reiserfs_info(s, "Using rupasov hash to sort names\n");
		return yura_hash;
	case R5_HASH:
		reiserfs_info(s, "Using r5 hash to sort names\n");
		return r5_hash;
	}