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authorAndrew Tridgell <tridge@samba.org>2011-09-23 17:30:40 +1000
committerAndrew Tridgell <tridge@samba.org>2011-10-04 15:08:56 +1100
commitbdc93190fe075af35d52560401bb4cd0c29bf31d (patch)
tree815202fdbecf65b07f680a8b9395b11bd04126bc /source4/dsdb/samdb/ldb_modules
parentf45147b2d9c6b43913d10871564d03307833fbae (diff)
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s4-dsdb: implement DSDB_REPL_FLAG_PRIORITISE_INCOMING
With this set, we accept changes even if they have the same tuple as the local copy. This can be used by a FULL_SYNC replication to recover a replica that is corrupt
Diffstat (limited to 'source4/dsdb/samdb/ldb_modules')
-rw-r--r--source4/dsdb/samdb/ldb_modules/repl_meta_data.c26
1 files changed, 22 insertions, 4 deletions
diff --git a/source4/dsdb/samdb/ldb_modules/repl_meta_data.c b/source4/dsdb/samdb/ldb_modules/repl_meta_data.c
index 32b8ab25c9..89f8e23b66 100644
--- a/source4/dsdb/samdb/ldb_modules/repl_meta_data.c
+++ b/source4/dsdb/samdb/ldb_modules/repl_meta_data.c
@@ -3681,8 +3681,18 @@ static int replmd_replicated_apply_merge(struct replmd_replicated_request *ar)
continue;
}
- cmp = replmd_replPropertyMetaData1_is_newer(&nmd.ctr.ctr1.array[j],
- &rmd->ctr.ctr1.array[i]);
+ if (ar->objs->dsdb_repl_flags & DSDB_REPL_FLAG_PRIORITISE_INCOMING) {
+ /* if we compare equal then do an
+ update. This is used when a client
+ asks for a FULL_SYNC, and can be
+ used to recover a corrupt
+ replica */
+ cmp = !replmd_replPropertyMetaData1_is_newer(&rmd->ctr.ctr1.array[i],
+ &nmd.ctr.ctr1.array[j]);
+ } else {
+ cmp = replmd_replPropertyMetaData1_is_newer(&nmd.ctr.ctr1.array[j],
+ &rmd->ctr.ctr1.array[i]);
+ }
if (cmp) {
/* replace the entry */
nmd.ctr.ctr1.array[j] = rmd->ctr.ctr1.array[i];
@@ -4324,6 +4334,7 @@ static int replmd_extended_replicated_objects(struct ldb_module *module, struct
uint32_t i;
struct replmd_private *replmd_private =
talloc_get_type(ldb_module_get_private(module), struct replmd_private);
+ struct dsdb_control_replicated_update *rep_update;
ldb = ldb_module_get_ctx(module);
@@ -4364,8 +4375,15 @@ static int replmd_extended_replicated_objects(struct ldb_module *module, struct
if (!req->controls) return replmd_replicated_request_werror(ar, WERR_NOMEM);
}
- /* This allows layers further down to know if a change came in over replication */
- ret = ldb_request_add_control(req, DSDB_CONTROL_REPLICATED_UPDATE_OID, false, NULL);
+ /* This allows layers further down to know if a change came in
+ over replication and what the replication flags were */
+ rep_update = talloc_zero(ar, struct dsdb_control_replicated_update);
+ if (rep_update == NULL) {
+ return ldb_module_oom(module);
+ }
+ rep_update->dsdb_repl_flags = objs->dsdb_repl_flags;
+
+ ret = ldb_request_add_control(req, DSDB_CONTROL_REPLICATED_UPDATE_OID, false, rep_update);
if (ret != LDB_SUCCESS) {
return ret;
}