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| author | Volker Lendecke <vl@samba.org> | 2014-02-18 20:51:23 +0100 |
|---|---|---|
| committer | Jeremy Allison <jra@samba.org> | 2014-05-31 01:59:18 +0200 |
| commit | c81f1aab93f613db5a7f8131e3761b0fb1c8ea83 (patch) | |
| tree | 0cecdcaa33f244001d6238b0329f3eed6f94a5d3 /source3/lib/messages.c | |
| parent | c487937b0146c19d4969208519f2c11b64666842 (diff) | |
| download | samba-c81f1aab93f613db5a7f8131e3761b0fb1c8ea83.tar.gz samba-c81f1aab93f613db5a7f8131e3761b0fb1c8ea83.tar.xz samba-c81f1aab93f613db5a7f8131e3761b0fb1c8ea83.zip | |
messaging3: Enforce just one messaging context
The current messaging implementation is based on a tdb indexed by server_id. If
we have more than one messaging context in a process, messages might not arrive
at the right context and be dropped, depending on which signal handler is
triggered first.
This is the same patch as bd55fdb lifted to messaging.c
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Diffstat (limited to 'source3/lib/messages.c')
| -rw-r--r-- | source3/lib/messages.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/source3/lib/messages.c b/source3/lib/messages.c index 364bbbcea4f..1263bf1698c 100644 --- a/source3/lib/messages.c +++ b/source3/lib/messages.c @@ -74,8 +74,12 @@ struct messaging_context { struct messaging_backend *local; struct messaging_backend *remote; + + bool *have_context; }; +static int messaging_context_destructor(struct messaging_context *msg_ctx); + /**************************************************************************** A useful function for testing the message system. ****************************************************************************/ @@ -205,6 +209,13 @@ struct messaging_context *messaging_init(TALLOC_CTX *mem_ctx, { struct messaging_context *ctx; NTSTATUS status; + static bool have_context = false; + + if (have_context) { + DEBUG(0, ("No two messaging contexts per process\n")); + return NULL; + } + if (!(ctx = talloc_zero(mem_ctx, struct messaging_context))) { return NULL; @@ -212,6 +223,7 @@ struct messaging_context *messaging_init(TALLOC_CTX *mem_ctx, ctx->id = procid_self(); ctx->event_ctx = ev; + ctx->have_context = &have_context; status = messaging_dgm_init(ctx, ctx, &ctx->local); @@ -242,9 +254,19 @@ struct messaging_context *messaging_init(TALLOC_CTX *mem_ctx, register_dmalloc_msgs(ctx); debug_register_msgs(ctx); + have_context = true; + talloc_set_destructor(ctx, messaging_context_destructor); + return ctx; } +static int messaging_context_destructor(struct messaging_context *msg_ctx) +{ + SMB_ASSERT(*msg_ctx->have_context); + *msg_ctx->have_context = false; + return 0; +} + struct server_id messaging_server_id(const struct messaging_context *msg_ctx) { return msg_ctx->id; |