#include "lib/util/tevent_unix.h"
#include "lib/background.h"
#include "lib/messages_dgm.h"
-#include "lib/messages_ctdbd.h"
#include "lib/util/iov_buf.h"
#include "lib/util/server_id_db.h"
#include "lib/messages_dgm_ref.h"
+#include "lib/messages_ctdb.h"
+#include "lib/messages_ctdb_ref.h"
#include "lib/messages_util.h"
+#include "cluster_support.h"
+#include "ctdbd_conn.h"
+#include "ctdb_srvids.h"
+
+#ifdef CLUSTER_SUPPORT
+#include "ctdb_protocol.h"
+#endif
struct messaging_callback {
struct messaging_callback *prev, *next;
struct messaging_registered_ev {
struct tevent_context *ev;
+ struct tevent_immediate *im;
size_t refcount;
};
struct tevent_context *event_ctx;
struct messaging_callback *callbacks;
+ struct messaging_rec *posted_msgs;
+
struct messaging_registered_ev *event_contexts;
struct tevent_req **new_waiters;
size_t num_waiters;
void *msg_dgm_ref;
- struct messaging_backend *remote;
+ void *msg_ctdb_ref;
struct server_id_db *names_db;
};
static struct messaging_rec *messaging_rec_dup(TALLOC_CTX *mem_ctx,
struct messaging_rec *rec);
+static bool messaging_dispatch_classic(struct messaging_context *msg_ctx,
+ struct messaging_rec *rec);
static bool messaging_dispatch_waiters(struct messaging_context *msg_ctx,
struct tevent_context *ev,
struct messaging_rec *rec);
* paranoia
*/
reg->ev = NULL;
+
+ /*
+ * Do not talloc_free(reg->im),
+ * recycle immediates events.
+ */
}
return true;
}
return false;
}
+static void messaging_post_main_event_context(struct tevent_context *ev,
+ struct tevent_immediate *im,
+ void *private_data)
+{
+ struct messaging_context *ctx = talloc_get_type_abort(
+ private_data, struct messaging_context);
+
+ while (ctx->posted_msgs != NULL) {
+ struct messaging_rec *rec = ctx->posted_msgs;
+ bool consumed;
+
+ DLIST_REMOVE(ctx->posted_msgs, rec);
+
+ consumed = messaging_dispatch_classic(ctx, rec);
+ if (!consumed) {
+ consumed = messaging_dispatch_waiters(
+ ctx, ctx->event_ctx, rec);
+ }
+
+ if (!consumed) {
+ uint8_t i;
+
+ for (i=0; i<rec->num_fds; i++) {
+ close(rec->fds[i]);
+ }
+ }
+
+ TALLOC_FREE(rec);
+ }
+}
+
+static void messaging_post_sub_event_context(struct tevent_context *ev,
+ struct tevent_immediate *im,
+ void *private_data)
+{
+ struct messaging_context *ctx = talloc_get_type_abort(
+ private_data, struct messaging_context);
+ struct messaging_rec *rec, *next;
+
+ for (rec = ctx->posted_msgs; rec != NULL; rec = next) {
+ bool consumed;
+
+ next = rec->next;
+
+ consumed = messaging_dispatch_waiters(ctx, ev, rec);
+ if (consumed) {
+ DLIST_REMOVE(ctx->posted_msgs, rec);
+ TALLOC_FREE(rec);
+ }
+ }
+}
+
+static bool messaging_alert_event_contexts(struct messaging_context *ctx)
+{
+ size_t i, num_event_contexts;
+
+ num_event_contexts = talloc_array_length(ctx->event_contexts);
+
+ for (i=0; i<num_event_contexts; i++) {
+ struct messaging_registered_ev *reg = &ctx->event_contexts[i];
+
+ if (reg->refcount == 0) {
+ continue;
+ }
+
+ if (reg->im == NULL) {
+ reg->im = tevent_create_immediate(
+ ctx->event_contexts);
+ }
+ if (reg->im == NULL) {
+ DBG_WARNING("Could not create immediate\n");
+ continue;
+ }
+
+ /*
+ * We depend on schedule_immediate to work
+ * multiple times. Might be a bit inefficient,
+ * but this needs to be proven in tests. The
+ * alternatively would be to track whether the
+ * immediate has already been scheduled. For
+ * now, avoid that complexity here.
+ */
+
+ if (reg->ev == ctx->event_ctx) {
+ tevent_schedule_immediate(
+ reg->im, reg->ev,
+ messaging_post_main_event_context,
+ ctx);
+ } else {
+ tevent_schedule_immediate(
+ reg->im, reg->ev,
+ messaging_post_sub_event_context,
+ ctx);
+ }
+
+ }
+ return true;
+}
+
static void messaging_recv_cb(struct tevent_context *ev,
const uint8_t *msg, size_t msg_len,
int *fds, size_t num_fds,
}
}
+ /*
+ * The immediates from messaging_alert_event_contexts
+ * reference "ctx". Don't let them outlive the
+ * messaging_context we're destroying here.
+ */
+ TALLOC_FREE(ctx->event_contexts);
+
return 0;
}
}
talloc_set_destructor(ctx, messaging_context_destructor);
+#ifdef CLUSTER_SUPPORT
if (lp_clustering()) {
- ret = messaging_ctdbd_init(ctx, ctx, &ctx->remote);
-
- if (ret != 0) {
- DEBUG(2, ("messaging_ctdbd_init failed: %s\n",
- strerror(ret)));
+ ctx->msg_ctdb_ref = messaging_ctdb_ref(
+ ctx, ctx->event_ctx,
+ lp_ctdbd_socket(), lp_ctdb_timeout(),
+ ctx->id.unique_id, messaging_recv_cb, ctx, &ret);
+ if (ctx->msg_ctdb_ref == NULL) {
+ DBG_NOTICE("messaging_ctdb_ref failed: %s\n",
+ strerror(ret));
status = map_nt_error_from_unix(ret);
goto done;
}
}
+#endif
+
ctx->id.vnn = get_my_vnn();
ctx->names_db = server_id_db_init(ctx,
char *lck_path;
TALLOC_FREE(msg_ctx->msg_dgm_ref);
+ TALLOC_FREE(msg_ctx->msg_ctdb_ref);
msg_ctx->id = (struct server_id) {
.pid = getpid(), .vnn = msg_ctx->id.vnn
}
if (lp_clustering()) {
- ret = messaging_ctdbd_reinit(msg_ctx, msg_ctx,
- msg_ctx->remote);
-
- if (ret != 0) {
- DEBUG(1, ("messaging_ctdbd_init failed: %s\n",
- strerror(ret)));
+ msg_ctx->msg_ctdb_ref = messaging_ctdb_ref(
+ msg_ctx, msg_ctx->event_ctx,
+ lp_ctdbd_socket(), lp_ctdb_timeout(),
+ msg_ctx->id.unique_id, messaging_recv_cb, msg_ctx,
+ &ret);
+ if (msg_ctx->msg_ctdb_ref == NULL) {
+ DBG_NOTICE("messaging_ctdb_ref failed: %s\n",
+ strerror(ret));
return map_nt_error_from_unix(ret);
}
}
return messaging_send(msg_ctx, server, msg_type, &blob);
}
-struct messaging_post_state {
- struct messaging_context *msg_ctx;
- struct messaging_rec *rec;
-};
-
-static void messaging_post_handler(struct tevent_context *ev,
- struct tevent_immediate *ti,
- void *private_data);
-
static int messaging_post_self(struct messaging_context *msg_ctx,
struct server_id src, struct server_id dst,
uint32_t msg_type,
const struct iovec *iov, int iovlen,
const int *fds, size_t num_fds)
{
- struct tevent_immediate *ti;
- struct messaging_post_state *state;
+ struct messaging_rec *rec;
+ bool ok;
- state = talloc(msg_ctx, struct messaging_post_state);
- if (state == NULL) {
+ rec = messaging_rec_create(
+ msg_ctx, src, dst, msg_type, iov, iovlen, fds, num_fds);
+ if (rec == NULL) {
return ENOMEM;
}
- state->msg_ctx = msg_ctx;
- ti = tevent_create_immediate(state);
- if (ti == NULL) {
- goto fail;
- }
- state->rec = messaging_rec_create(
- state, src, dst, msg_type, iov, iovlen, fds, num_fds);
- if (state->rec == NULL) {
- goto fail;
+ ok = messaging_alert_event_contexts(msg_ctx);
+ if (!ok) {
+ TALLOC_FREE(rec);
+ return ENOMEM;
}
- tevent_schedule_immediate(ti, msg_ctx->event_ctx,
- messaging_post_handler, state);
- return 0;
+ DLIST_ADD_END(msg_ctx->posted_msgs, rec);
-fail:
- TALLOC_FREE(state);
- return ENOMEM;
-}
-
-static void messaging_post_handler(struct tevent_context *ev,
- struct tevent_immediate *ti,
- void *private_data)
-{
- struct messaging_post_state *state = talloc_get_type_abort(
- private_data, struct messaging_post_state);
- messaging_dispatch_rec(state->msg_ctx, ev, state->rec);
- TALLOC_FREE(state);
+ return 0;
}
int messaging_send_iov_from(struct messaging_context *msg_ctx,
return EINVAL;
}
- if (dst.vnn != msg_ctx->id.vnn) {
- if (num_fds > 0) {
- return ENOSYS;
- }
-
- ret = msg_ctx->remote->send_fn(src, dst,
- msg_type, iov, iovlen,
- NULL, 0,
- msg_ctx->remote);
- return ret;
- }
-
if (server_id_equal(&dst, &msg_ctx->id)) {
ret = messaging_post_self(msg_ctx, src, dst, msg_type,
iov, iovlen, fds, num_fds);
iov2[0] = (struct iovec){ .iov_base = hdr, .iov_len = sizeof(hdr) };
memcpy(&iov2[1], iov, iovlen * sizeof(*iov));
+ if (dst.vnn != msg_ctx->id.vnn) {
+ if (num_fds > 0) {
+ return ENOSYS;
+ }
+
+ ret = messaging_ctdb_send(dst.vnn, dst.pid, iov2, iovlen+1);
+ return ret;
+ }
+
ret = messaging_dgm_send(dst.pid, iov2, iovlen+1, fds, num_fds);
if (ret == EACCES) {
return NT_STATUS_OK;
}
+struct send_all_state {
+ struct messaging_context *msg_ctx;
+ int msg_type;
+ const void *buf;
+ size_t len;
+};
+
+static int send_all_fn(pid_t pid, void *private_data)
+{
+ struct send_all_state *state = private_data;
+ NTSTATUS status;
+
+ if (pid == getpid()) {
+ DBG_DEBUG("Skip ourselves in messaging_send_all\n");
+ return 0;
+ }
+
+ status = messaging_send_buf(state->msg_ctx, pid_to_procid(pid),
+ state->msg_type, state->buf, state->len);
+ if (!NT_STATUS_IS_OK(status)) {
+ DBG_WARNING("messaging_send_buf to %ju failed: %s\n",
+ (uintmax_t)pid, nt_errstr(status));
+ }
+
+ return 0;
+}
+
+void messaging_send_all(struct messaging_context *msg_ctx,
+ int msg_type, const void *buf, size_t len)
+{
+ struct send_all_state state = {
+ .msg_ctx = msg_ctx, .msg_type = msg_type,
+ .buf = buf, .len = len
+ };
+ int ret;
+
+#ifdef CLUSTER_SUPPORT
+ if (lp_clustering()) {
+ struct ctdbd_connection *conn = messaging_ctdb_connection();
+ uint8_t msghdr[MESSAGE_HDR_LENGTH];
+ struct iovec iov[] = {
+ { .iov_base = msghdr,
+ .iov_len = sizeof(msghdr) },
+ { .iov_base = discard_const_p(void, buf),
+ .iov_len = len }
+ };
+
+ message_hdr_put(msghdr, msg_type, messaging_server_id(msg_ctx),
+ (struct server_id) {0});
+
+ ret = ctdbd_messaging_send_iov(
+ conn, CTDB_BROADCAST_CONNECTED,
+ CTDB_SRVID_SAMBA_PROCESS,
+ iov, ARRAY_SIZE(iov));
+ if (ret != 0) {
+ DBG_WARNING("ctdbd_messaging_send_iov failed: %s\n",
+ strerror(ret));
+ }
+
+ return;
+ }
+#endif
+
+ ret = messaging_dgm_forall(send_all_fn, &state);
+ if (ret != 0) {
+ DBG_WARNING("messaging_dgm_forall failed: %s\n",
+ strerror(ret));
+ }
+}
+
static struct messaging_rec *messaging_rec_dup(TALLOC_CTX *mem_ctx,
struct messaging_rec *rec)
{
struct tevent_context *ev;
struct messaging_context *msg_ctx;
struct messaging_dgm_fde *fde;
+ struct messaging_ctdb_fde *cluster_fde;
bool (*filter)(struct messaging_rec *rec, void *private_data);
void *private_data;
return tevent_req_post(req, ev);
}
+ if (lp_clustering()) {
+ state->cluster_fde =
+ messaging_ctdb_register_tevent_context(state, ev);
+ if (tevent_req_nomem(state->cluster_fde, req)) {
+ return tevent_req_post(req, ev);
+ }
+ }
+
/*
* We add ourselves to the "new_waiters" array, not the "waiters"
* array. If we are called from within messaging_read_done,
tevent_req_set_cleanup_fn(req, NULL);
TALLOC_FREE(state->fde);
+ TALLOC_FREE(state->cluster_fde);
ok = messaging_deregister_event_context(msg_ctx, state->ev);
if (!ok) {
60*15),
mess_parent_dgm_cleanup, msg);
if (req == NULL) {
+ DBG_WARNING("background_job_send failed\n");
return false;
}
tevent_req_set_callback(req, mess_parent_dgm_cleanup_done, msg);
git.samba.org / nivanova / samba-autobuild / .git / blobdiff