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authorVolker Lendecke <vl@samba.org>2009-08-15 11:21:16 +0200
committerVolker Lendecke <vl@samba.org>2009-08-16 10:38:24 +0200
commite54503e82fdbb337b4de9c5aaef252edb2e11e39 (patch)
treed998e8b10b15f3da805631ff6fa6813e775dca4c /source3/winbindd
parent1d110e0ef6efa030a65465291f2b8c7874fed1fb (diff)
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s3:winbind: Add async wb_seqnums
This is something that would have been very difficult with the old style of async requests: Send the request to all children simultaneously.
Diffstat (limited to 'source3/winbindd')
-rw-r--r--source3/winbindd/wb_seqnums.c133
-rw-r--r--source3/winbindd/winbindd_proto.h5
2 files changed, 138 insertions, 0 deletions
diff --git a/source3/winbindd/wb_seqnums.c b/source3/winbindd/wb_seqnums.c
new file mode 100644
index 0000000000..f4044338a1
--- /dev/null
+++ b/source3/winbindd/wb_seqnums.c
@@ -0,0 +1,133 @@
+/*
+ Unix SMB/CIFS implementation.
+ async seqnums
+ Copyright (C) Volker Lendecke 2009
+
+ 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 <http://www.gnu.org/licenses/>.
+*/
+
+#include "includes.h"
+#include "winbindd.h"
+#include "librpc/gen_ndr/cli_wbint.h"
+
+struct wb_seqnums_state {
+ int num_domains;
+ int num_received;
+
+ struct tevent_req **subreqs;
+ struct winbindd_domain **domains;
+ NTSTATUS *stati;
+ uint32_t *seqnums;
+};
+
+static void wb_seqnums_done(struct tevent_req *subreq);
+
+struct tevent_req *wb_seqnums_send(TALLOC_CTX *mem_ctx,
+ struct tevent_context *ev)
+{
+ struct tevent_req *req;
+ struct wb_seqnums_state *state;
+ struct winbindd_domain *domain;
+ int i;
+
+ req = tevent_req_create(mem_ctx, &state, struct wb_seqnums_state);
+ if (req == NULL) {
+ return NULL;
+ }
+ state->num_received = 0;
+ state->num_domains = 0;
+
+ for (domain = domain_list(); domain != NULL; domain = domain->next) {
+ state->num_domains += 1;
+ }
+
+ state->subreqs = talloc_array(state, struct tevent_req *,
+ state->num_domains);
+ state->domains = talloc_array(state, struct winbindd_domain *,
+ state->num_domains);
+ state->stati = talloc_array(state, NTSTATUS, state->num_domains);
+ state->seqnums = talloc_array(state, uint32_t, state->num_domains);
+
+ if ((state->subreqs == NULL) || (state->domains == NULL) ||
+ (state->stati == NULL) || (state->seqnums == NULL)) {
+ tevent_req_nterror(req, NT_STATUS_NO_MEMORY);
+ return tevent_req_post(req, ev);
+ }
+
+ i = 0;
+
+ for (domain = domain_list(); domain != NULL; domain = domain->next) {
+ state->domains[i] = domain;
+ state->subreqs[i] = wb_seqnum_send(state->subreqs, ev, domain);
+ if (tevent_req_nomem(state->subreqs[i], req)) {
+ /* Don't even start all the other requests */
+ TALLOC_FREE(state->subreqs);
+ return tevent_req_post(req, ev);
+ }
+ tevent_req_set_callback(state->subreqs[i], wb_seqnums_done,
+ req);
+ i += 1;
+ }
+ return req;
+}
+
+static void wb_seqnums_done(struct tevent_req *subreq)
+{
+ struct tevent_req *req = tevent_req_callback_data(
+ subreq, struct tevent_req);
+ struct wb_seqnums_state *state = tevent_req_data(
+ req, struct wb_seqnums_state);
+ NTSTATUS status;
+ uint32_t seqnum;
+ int i;
+
+ status = wb_seqnum_recv(subreq, &seqnum);
+
+ for (i=0; i<state->num_domains; i++) {
+ if (subreq == state->subreqs[i]) {
+ state->subreqs[i] = NULL;
+ state->stati[i] = status;
+ if (NT_STATUS_IS_OK(status)) {
+ state->seqnums[i] = seqnum;
+ state->domains[i]->sequence_number = seqnum;
+ }
+ break;
+ }
+ }
+ TALLOC_FREE(subreq);
+
+ state->num_received += 1;
+
+ if (state->num_received >= state->num_domains) {
+ tevent_req_done(req);
+ }
+}
+
+NTSTATUS wb_seqnums_recv(struct tevent_req *req, TALLOC_CTX *mem_ctx,
+ int *num_domains, struct winbindd_domain ***domains,
+ NTSTATUS **stati, uint32_t **seqnums)
+{
+ struct wb_seqnums_state *state = tevent_req_data(
+ req, struct wb_seqnums_state);
+ NTSTATUS status;
+
+ if (tevent_req_is_nterror(req, &status)) {
+ return status;
+ }
+ *num_domains = state->num_domains;
+ *domains = talloc_move(mem_ctx, &state->domains);
+ *stati = talloc_move(mem_ctx, &state->stati);
+ *seqnums = talloc_move(mem_ctx, &state->seqnums);
+ return NT_STATUS_OK;
+}
diff --git a/source3/winbindd/winbindd_proto.h b/source3/winbindd/winbindd_proto.h
index 1638b0be62..a144c99c80 100644
--- a/source3/winbindd/winbindd_proto.h
+++ b/source3/winbindd/winbindd_proto.h
@@ -772,5 +772,10 @@ struct tevent_req *wb_seqnum_send(TALLOC_CTX *mem_ctx,
struct winbindd_domain *domain);
NTSTATUS wb_seqnum_recv(struct tevent_req *req, uint32_t *seqnum);
+struct tevent_req *wb_seqnums_send(TALLOC_CTX *mem_ctx,
+ struct tevent_context *ev);
+NTSTATUS wb_seqnums_recv(struct tevent_req *req, TALLOC_CTX *mem_ctx,
+ int *num_domains, struct winbindd_domain ***domains,
+ NTSTATUS **stati, uint32_t **seqnums);
#endif /* _WINBINDD_PROTO_H_ */