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Code Activity

dbcheck: added fix for incorrect RMD_FLAGS

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this fixes the case where a DN link has RMD_FLAGS=0 for a link inside
a deleted object

Pair-Programmed-With: Andrew Bartlett <abartlet@samba.org>

Autobuild-User: Andrew Tridgell <tridge@samba.org>
Autobuild-Date: Wed Apr 18 09:19:41 CEST 2012 on sn-devel-104
This commit is contained in:
Andrew Tridgell
2012-04-18 15:46:14 +10:00
parent 997a22e7bf
commit c69c07efec
1 changed files with 35 additions and 0 deletions
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35
source4/scripting/python/samba/dbchecker.py
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@ -48,6 +48,7 @@ class dbcheck(object):
self.fix_time_metadata = False
self.fix_all_missing_backlinks = False
self.fix_all_orphaned_backlinks = False
self.fix_rmd_flags = False
self.in_transaction = in_transaction
def check_database(self, DN=None, scope=ldb.SCOPE_SUBTREE, controls=[], attrs=['*']):
@ -282,6 +283,20 @@ class dbcheck(object):
"Failed to fix missing backlink %s" % backlink_name):
self.report("Fixed missing backlink %s" % (backlink_name))
def err_incorrect_rmd_flags(self, obj, attrname, revealed_dn):
'''handle a incorrect RMD_FLAGS value'''
rmd_flags = int(revealed_dn.dn.get_extended_component("RMD_FLAGS"))
self.report("ERROR: incorrect RMD_FLAGS value %u for attribute '%s' in %s for link %s" % (rmd_flags, attrname, obj.dn, revealed_dn.dn.extended_str()))
if not self.confirm_all('Fix incorrect RMD_FLAGS %u' % rmd_flags, 'fix_rmd_flags'):
self.report("Not fixing incorrect RMD_FLAGS %u" % rmd_flags)
return
m = ldb.Message()
m.dn = obj.dn
m['old_value'] = ldb.MessageElement(str(revealed_dn), ldb.FLAG_MOD_DELETE, attrname)
if self.do_modify(m, ["show_recycled:1", "reveal_internals:0", "show_deleted:0"],
"Failed to fix incorrect RMD_FLAGS %u" % rmd_flags):
self.report("Fixed incorrect RMD_FLAGS %u" % (rmd_flags))
def err_orphaned_backlink(self, obj, attrname, val, link_name, target_dn):
'''handle a orphaned backlink value'''
self.report("ERROR: orphaned backlink attribute '%s' in %s for link %s in %s" % (attrname, obj.dn, link_name, target_dn))
@ -295,6 +310,18 @@ class dbcheck(object):
"Failed to fix orphaned backlink %s" % link_name):
self.report("Fixed orphaned backlink %s" % (link_name))
def find_revealed_link(self, dn, attrname, guid):
'''return a revealed link in an object'''
res = self.samdb.search(base=dn, scope=ldb.SCOPE_BASE, attrs=[attrname],
controls=["show_deleted:0", "extended_dn:0", "reveal_internals:0"])
syntax_oid = self.samdb_schema.get_syntax_oid_from_lDAPDisplayName(attrname)
for val in res[0][attrname]:
dsdb_dn = dsdb_Dn(self.samdb, val, syntax_oid)
guid2 = dsdb_dn.dn.get_extended_component("GUID")
if guid == guid2:
return dsdb_dn
return None
def check_dn(self, obj, attrname, syntax_oid):
'''check a DN attribute for correctness'''
error_count = 0
@ -344,6 +371,14 @@ class dbcheck(object):
res[0].dn, "incorrect string version of DN")
continue
if is_deleted and not target_is_deleted and reverse_link_name is not None:
revealed_dn = self.find_revealed_link(obj.dn, attrname, guid)
rmd_flags = revealed_dn.dn.get_extended_component("RMD_FLAGS")
if rmd_flags != None and (int(rmd_flags) & 1) == 0:
# the RMD_FLAGS for this link should be 1, as the target is deleted
self.err_incorrect_rmd_flags(obj, attrname, revealed_dn)
continue
# check the reverse_link is correct if there should be one
if reverse_link_name is not None:
match_count = 0