Attachment 14285 Details for Bug 13500 – Patch for v4.8

[patch] Patch for v4.8

BZ13500-v4-8.patch (text/plain), 4.15 KB, created by Martin Schwenke on 2018-07-06 01:50:19 UTC

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Creator: Martin Schwenke

Created: 2018-07-06 01:50:19 UTC

Size: 4.15 KB

patch

obsolete

>From 3c7b94d11bffb4eea2618d5c2d15026fe8def1d6 Mon Sep 17 00:00:00 2001
>From: Martin Schwenke <martin@meltin.net>
>Date: Tue, 26 Jun 2018 20:12:23 +1000
>Subject: [PATCH] ctdb-daemon: Only consider client ID for local database
> attach
>
>The comment immediately above this code says "don't allow local
>clients to attach" and then looks up the client ID regardless of
>whether the request is local or remote.
>
>This means that an intentional remote attach from a client will not
>work correctly.  No real client should ever do that since clients
>attach so they an access databases locally.  Perhaps some sanity
>checks should be added.
>
>BUG: https://bugzilla.samba.org/show_bug.cgi?id=13500
>
>Signed-off-by: Martin Schwenke <martin@meltin.net>
>Reviewed-by: Amitay Isaacs <amitay@gmail.com>
>(cherry picked from commit 63255ef92552da92956c05160f33622d0bbc3a28)
>---
> ctdb/include/ctdb_private.h    |  7 +++++--
> ctdb/server/ctdb_control.c     | 32 ++++++++++++++++++++++++--------
> ctdb/server/ctdb_ltdb_server.c |  9 ++++++---
> 3 files changed, 35 insertions(+), 13 deletions(-)
>
>diff --git a/ctdb/include/ctdb_private.h b/ctdb/include/ctdb_private.h
>index 23cb7dcd53b..25d00476be2 100644
>--- a/ctdb/include/ctdb_private.h
>+++ b/ctdb/include/ctdb_private.h
>@@ -726,9 +726,12 @@ int ctdb_set_db_readonly(struct ctdb_context *ctdb,
> 
> int ctdb_process_deferred_attach(struct ctdb_context *ctdb);
> 
>-int32_t ctdb_control_db_attach(struct ctdb_context *ctdb, TDB_DATA indata,
>+int32_t ctdb_control_db_attach(struct ctdb_context *ctdb,
>+			       TDB_DATA indata,
> 			       TDB_DATA *outdata,
>-			       uint8_t db_flags, uint32_t client_id,
>+			       uint8_t db_flags,
>+			       uint32_t srcnode,
>+			       uint32_t client_id,
> 			       struct ctdb_req_control_old *c,
> 			       bool *async_reply);
> int32_t ctdb_control_db_detach(struct ctdb_context *ctdb, TDB_DATA indata,
>diff --git a/ctdb/server/ctdb_control.c b/ctdb/server/ctdb_control.c
>index b812980ddf9..848010e2310 100644
>--- a/ctdb/server/ctdb_control.c
>+++ b/ctdb/server/ctdb_control.c
>@@ -267,18 +267,34 @@ static int32_t ctdb_control_dispatch(struct ctdb_context *ctdb,
> 	}
> 
> 	case CTDB_CONTROL_DB_ATTACH:
>-	  return ctdb_control_db_attach(ctdb, indata, outdata, 0, client_id,
>-					c, async_reply);
>+	  return ctdb_control_db_attach(ctdb,
>+					indata,
>+					outdata,
>+					0,
>+					srcnode,
>+					client_id,
>+					c,
>+					async_reply);
> 
> 	case CTDB_CONTROL_DB_ATTACH_PERSISTENT:
>-	  return ctdb_control_db_attach(ctdb, indata, outdata,
>-					CTDB_DB_FLAGS_PERSISTENT, client_id,
>-					c, async_reply);
>+	  return ctdb_control_db_attach(ctdb,
>+					indata,
>+					outdata,
>+					CTDB_DB_FLAGS_PERSISTENT,
>+					srcnode,
>+					client_id,
>+					c,
>+					async_reply);
> 
> 	case CTDB_CONTROL_DB_ATTACH_REPLICATED:
>-	  return ctdb_control_db_attach(ctdb, indata, outdata,
>-					CTDB_DB_FLAGS_REPLICATED, client_id,
>-					c, async_reply);
>+	  return ctdb_control_db_attach(ctdb,
>+					indata,
>+					outdata,
>+					CTDB_DB_FLAGS_REPLICATED,
>+					srcnode,
>+					client_id,
>+					c,
>+					async_reply);
> 
> 	case CTDB_CONTROL_SET_CALL:
> 		return control_not_implemented("SET_CALL", NULL);
>diff --git a/ctdb/server/ctdb_ltdb_server.c b/ctdb/server/ctdb_ltdb_server.c
>index 1962f854683..ca5bb124f5f 100644
>--- a/ctdb/server/ctdb_ltdb_server.c
>+++ b/ctdb/server/ctdb_ltdb_server.c
>@@ -1105,9 +1105,12 @@ int ctdb_process_deferred_attach(struct ctdb_context *ctdb)
> /*
>   a client has asked to attach a new database
>  */
>-int32_t ctdb_control_db_attach(struct ctdb_context *ctdb, TDB_DATA indata,
>+int32_t ctdb_control_db_attach(struct ctdb_context *ctdb,
>+			       TDB_DATA indata,
> 			       TDB_DATA *outdata,
>-			       uint8_t db_flags, uint32_t client_id,
>+			       uint8_t db_flags,
>+			       uint32_t srcnode,
>+			       uint32_t client_id,
> 			       struct ctdb_req_control_old *c,
> 			       bool *async_reply)
> {
>@@ -1128,7 +1131,7 @@ int32_t ctdb_control_db_attach(struct ctdb_context *ctdb, TDB_DATA indata,
> 	 * allow all attach from the network since these are always from remote
> 	 * recovery daemons.
> 	 */
>-	if (client_id != 0) {
>+	if (srcnode == ctdb->pnn && client_id != 0) {
> 		client = reqid_find(ctdb->idr, client_id, struct ctdb_client);
> 	}
> 	if (client != NULL) {
>-- 
>2.18.0
>

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Attachments on bug 13500: 14284 | 14285