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-rw-r--r--source4/lib/messaging/irpc.h10
-rw-r--r--source4/lib/messaging/messaging.c132
-rw-r--r--source4/lib/messaging/messaging.h3
3 files changed, 110 insertions, 35 deletions
diff --git a/source4/lib/messaging/irpc.h b/source4/lib/messaging/irpc.h
index 5b4abc556f..4e775bfe06 100644
--- a/source4/lib/messaging/irpc.h
+++ b/source4/lib/messaging/irpc.h
@@ -76,14 +76,18 @@ struct irpc_request {
} async;
};
+typedef void (*msg_callback_t)(struct messaging_context *msg, void *private,
+ uint32_t msg_type, uint32_t server_id, DATA_BLOB *data);
struct messaging_context *messaging_init(TALLOC_CTX *mem_ctx, uint32_t server_id,
struct event_context *ev);
NTSTATUS messaging_send(struct messaging_context *msg, uint32_t server,
uint32_t msg_type, DATA_BLOB *data);
-void messaging_register(struct messaging_context *msg, void *private,
- uint32_t msg_type,
- void (*fn)(struct messaging_context *, void *, uint32_t, uint32_t, DATA_BLOB *));
+NTSTATUS messaging_register(struct messaging_context *msg, void *private,
+ uint32_t msg_type,
+ msg_callback_t fn);
+NTSTATUS messaging_register_tmp(struct messaging_context *msg, void *private,
+ msg_callback_t fn, uint32_t *msg_type);
struct messaging_context *messaging_init(TALLOC_CTX *mem_ctx, uint32_t server_id,
struct event_context *ev);
struct messaging_context *messaging_client_init(TALLOC_CTX *mem_ctx,
diff --git a/source4/lib/messaging/messaging.c b/source4/lib/messaging/messaging.c
index f3296c6938..f8f998f5cf 100644
--- a/source4/lib/messaging/messaging.c
+++ b/source4/lib/messaging/messaging.c
@@ -41,7 +41,9 @@ struct messaging_context {
struct socket_context *sock;
const char *base_path;
const char *path;
- struct dispatch_fn *dispatch;
+ struct dispatch_fn **dispatch;
+ uint32_t num_types;
+ struct idr_context *dispatch_tree;
struct messaging_rec *pending;
struct irpc_list *irpc;
struct idr_context *idr;
@@ -54,14 +56,13 @@ struct messaging_context {
} event;
};
-/* we have a linked list of dispatch handlers that this messaging
- server can deal with */
+/* we have a linked list of dispatch handlers for each msg_type that
+ this messaging server can deal with */
struct dispatch_fn {
struct dispatch_fn *next, *prev;
uint32_t msg_type;
void *private;
- void (*fn)(struct messaging_context *msg, void *private,
- uint32_t msg_type, uint32_t server_id, DATA_BLOB *data);
+ msg_callback_t fn;
};
/* an individual message */
@@ -127,14 +128,22 @@ static char *messaging_path(struct messaging_context *msg, uint32_t server_id)
static void messaging_dispatch(struct messaging_context *msg, struct messaging_rec *rec)
{
struct dispatch_fn *d, *next;
- for (d=msg->dispatch;d;d=next) {
+
+ /* temporary IDs use an idtree, the rest use a array of pointers */
+ if (rec->header->msg_type >= MSG_TMP_BASE) {
+ d = idr_find(msg->dispatch_tree, rec->header->msg_type);
+ } else if (rec->header->msg_type < msg->num_types) {
+ d = msg->dispatch[rec->header->msg_type];
+ } else {
+ d = NULL;
+ }
+
+ for (; d; d = next) {
+ DATA_BLOB data;
next = d->next;
- if (d->msg_type == rec->header->msg_type) {
- DATA_BLOB data;
- data.data = rec->packet.data + sizeof(*rec->header);
- data.length = rec->header->length;
- d->fn(msg, d->private, d->msg_type, rec->header->from, &data);
- }
+ data.data = rec->packet.data + sizeof(*rec->header);
+ data.length = rec->header->length;
+ d->fn(msg, d->private, d->msg_type, rec->header->from, &data);
}
rec->header->length = 0;
}
@@ -272,17 +281,61 @@ static void messaging_handler(struct event_context *ev, struct fd_event *fde,
/*
Register a dispatch function for a particular message type.
*/
-void messaging_register(struct messaging_context *msg, void *private,
- uint32_t msg_type,
- void (*fn)(struct messaging_context *, void *, uint32_t, uint32_t, DATA_BLOB *))
+NTSTATUS messaging_register(struct messaging_context *msg, void *private,
+ uint32_t msg_type, msg_callback_t fn)
{
struct dispatch_fn *d;
- d = talloc(msg, struct dispatch_fn);
+ /* possibly expand dispatch array */
+ if (msg_type >= msg->num_types) {
+ struct dispatch_fn **dp;
+ int i;
+ dp = talloc_realloc(msg, msg->dispatch, struct dispatch_fn *, msg_type+1);
+ NT_STATUS_HAVE_NO_MEMORY(dp);
+ msg->dispatch = dp;
+ for (i=msg->num_types;i<=msg_type;i++) {
+ msg->dispatch[i] = NULL;
+ }
+ msg->num_types = msg_type+1;
+ }
+
+
+ d = talloc(msg->dispatch, struct dispatch_fn);
+ NT_STATUS_HAVE_NO_MEMORY(d);
d->msg_type = msg_type;
d->private = private;
d->fn = fn;
- DLIST_ADD(msg->dispatch, d);
+
+ DLIST_ADD(msg->dispatch[msg_type], d);
+
+ return NT_STATUS_OK;
+}
+
+/*
+ register a temporary message handler. The msg_type is allocated
+ above MSG_TMP_BASE
+*/
+NTSTATUS messaging_register_tmp(struct messaging_context *msg, void *private,
+ msg_callback_t fn, uint32_t *msg_type)
+{
+ struct dispatch_fn *d;
+ int id;
+
+ d = talloc_zero(msg->dispatch, struct dispatch_fn);
+ NT_STATUS_HAVE_NO_MEMORY(d);
+ d->private = private;
+ d->fn = fn;
+
+ id = idr_get_new_above(msg->dispatch_tree, d, MSG_TMP_BASE, UINT16_MAX);
+ if (id == -1) {
+ talloc_free(d);
+ return NT_STATUS_TOO_MANY_CONTEXT_IDS;
+ }
+
+ d->msg_type = (uint32_t)id;
+ (*msg_type) = d->msg_type;
+
+ return NT_STATUS_OK;
}
/*
@@ -290,16 +343,34 @@ void messaging_register(struct messaging_context *msg, void *private,
*/
void messaging_deregister(struct messaging_context *msg, uint32_t msg_type, void *private)
{
- struct dispatch_fn *d, *next;
+ struct dispatch_fn *d, *list, *next;
- for (d = msg->dispatch; d; d = next) {
+ if (msg_type >= msg->num_types) {
+ list = idr_find(msg->dispatch_tree, msg_type);
+ } else {
+ list = msg->dispatch[msg_type];
+ }
+
+ if (list == NULL) {
+ return;
+ }
+
+ for (d = list; d; d = next) {
next = d->next;
- if (d->msg_type == msg_type &&
- d->private == private) {
- DLIST_REMOVE(msg->dispatch, d);
+ if (d->private == private) {
+ DLIST_REMOVE(list, d);
talloc_free(d);
}
}
+
+ /* the list base possibly changed */
+ if (list == NULL) {
+ if (msg_type >= msg->num_types) {
+ idr_remove(msg->dispatch_tree, msg_type);
+ } else {
+ msg->dispatch[msg_type] = NULL;
+ }
+ }
}
@@ -397,7 +468,7 @@ struct messaging_context *messaging_init(TALLOC_CTX *mem_ctx, uint32_t server_id
struct socket_address *path;
char *dir;
- msg = talloc(mem_ctx, struct messaging_context);
+ msg = talloc_zero(mem_ctx, struct messaging_context);
if (msg == NULL) {
return NULL;
}
@@ -411,15 +482,12 @@ struct messaging_context *messaging_init(TALLOC_CTX *mem_ctx, uint32_t server_id
mkdir(dir, 0700);
talloc_free(dir);
- msg->base_path = smbd_tmp_path(msg, "messaging");
- msg->path = messaging_path(msg, server_id);
- msg->server_id = server_id;
- msg->dispatch = NULL;
- msg->pending = NULL;
- msg->idr = idr_init(msg);
- msg->irpc = NULL;
- msg->names = NULL;
- msg->start_time = timeval_current();
+ msg->base_path = smbd_tmp_path(msg, "messaging");
+ msg->path = messaging_path(msg, server_id);
+ msg->server_id = server_id;
+ msg->idr = idr_init(msg);
+ msg->dispatch_tree = idr_init(msg);
+ msg->start_time = timeval_current();
status = socket_create("unix", SOCKET_TYPE_DGRAM, &msg->sock, 0);
if (!NT_STATUS_IS_OK(status)) {
diff --git a/source4/lib/messaging/messaging.h b/source4/lib/messaging/messaging.h
index 86f5db2c17..5324c530ea 100644
--- a/source4/lib/messaging/messaging.h
+++ b/source4/lib/messaging/messaging.h
@@ -34,4 +34,7 @@ struct messaging_context;
#define MSG_PVFS_NOTIFY 7
#define MSG_NTVFS_OPLOCK_BREAK 8
+/* temporary messaging endpoints are allocated above this line */
+#define MSG_TMP_BASE 1000
+
#endif
generated by cgit (git 2.34.1) at 2024-12-27 07:21:24 +0000