Copyright (C) Andrew Tridgell 2000
Copyright (C) 2001 by Martin Pool
Copyright (C) 2002 by Jeremy Allison
+ Copyright (C) 2007 by Volker Lendecke
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 2 of the License, or
+ 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,
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, write to the Free Software
- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/**
*/
#include "includes.h"
+#include "librpc/gen_ndr/messaging.h"
+#include "librpc/gen_ndr/ndr_messaging.h"
-/* the locking database handle */
-static TDB_CONTEXT *tdb;
-static int received_signal;
-
-/* change the message version with any incompatible changes in the protocol */
-#define MESSAGE_VERSION 1
-
-struct message_rec {
- int msg_version;
- int msg_type;
- struct process_id dest;
- struct process_id src;
- size_t len;
-};
-
-/* we have a linked list of dispatch handlers */
-static struct dispatch_fns {
- struct dispatch_fns *next, *prev;
- int msg_type;
- void (*fn)(int msg_type, struct process_id pid, void *buf, size_t len,
- void *private_data);
+struct messaging_callback {
+ struct messaging_callback *prev, *next;
+ uint32 msg_type;
+ void (*fn)(struct messaging_context *msg, void *private_data,
+ uint32_t msg_type,
+ struct server_id server_id, DATA_BLOB *data);
void *private_data;
-} *dispatch_fns;
-
-/****************************************************************************
- Free global objects.
-****************************************************************************/
-
-void gfree_messages(void)
-{
- struct dispatch_fns *dfn, *next;
-
- /* delete the dispatch_fns list */
- dfn = dispatch_fns;
- while( dfn ) {
- next = dfn->next;
- DLIST_REMOVE(dispatch_fns, dfn);
- SAFE_FREE(dfn);
- dfn = next;
- }
-}
-
-/****************************************************************************
- Notifications come in as signals.
-****************************************************************************/
-
-static void sig_usr1(void)
-{
- received_signal = 1;
- sys_select_signal(SIGUSR1);
-}
+};
/****************************************************************************
A useful function for testing the message system.
****************************************************************************/
-static void ping_message(int msg_type, struct process_id src,
- void *buf, size_t len, void *private_data)
+static void ping_message(struct messaging_context *msg_ctx,
+ void *private_data,
+ uint32_t msg_type,
+ struct server_id src,
+ DATA_BLOB *data)
{
- const char *msg = buf ? (const char *)buf : "none";
+ const char *msg = data->data ? (const char *)data->data : "none";
DEBUG(1,("INFO: Received PING message from PID %s [%s]\n",
procid_str_static(&src), msg));
- message_send_pid(src, MSG_PONG, buf, len, True);
-}
-
-/****************************************************************************
- Initialise the messaging functions.
-****************************************************************************/
-
-BOOL message_init(void)
-{
- sec_init();
-
- if (tdb)
- return True;
-
- tdb = tdb_open_log(lock_path("messages.tdb"),
- 0, TDB_CLEAR_IF_FIRST|TDB_DEFAULT,
- O_RDWR|O_CREAT,0600);
-
- if (!tdb) {
- DEBUG(0,("ERROR: Failed to initialise messages database\n"));
- return False;
- }
-
- /* Activate the per-hashchain freelist */
- tdb_set_max_dead(tdb, 5);
-
- CatchSignal(SIGUSR1, SIGNAL_CAST sig_usr1);
-
- message_register(MSG_PING, ping_message, NULL);
-
- /* Register some debugging related messages */
-
- register_msg_pool_usage();
- register_dmalloc_msgs();
-
- return True;
-}
-
-/*******************************************************************
- Form a static tdb key from a pid.
-******************************************************************/
-
-static TDB_DATA message_key_pid(struct process_id pid)
-{
- static char key[20];
- TDB_DATA kbuf;
-
- slprintf(key, sizeof(key)-1, "PID/%s", procid_str_static(&pid));
-
- kbuf.dptr = (uint8 *)key;
- kbuf.dsize = strlen(key)+1;
- return kbuf;
-}
-
-/****************************************************************************
- Notify a process that it has a message. If the process doesn't exist
- then delete its record in the database.
-****************************************************************************/
-
-static NTSTATUS message_notify(struct process_id procid)
-{
- pid_t pid = procid.pid;
- int ret;
- uid_t euid = geteuid();
-
- /*
- * Doing kill with a non-positive pid causes messages to be
- * sent to places we don't want.
- */
-
- SMB_ASSERT(pid > 0);
-
- if (euid != 0) {
- /* If we're not root become so to send the message. */
- save_re_uid();
- set_effective_uid(0);
- }
-
- ret = kill(pid, SIGUSR1);
-
- if (euid != 0) {
- /* Go back to who we were. */
- int saved_errno = errno;
- restore_re_uid_fromroot();
- errno = saved_errno;
- }
-
- if (ret == -1) {
- if (errno == ESRCH) {
- DEBUG(2,("pid %d doesn't exist - deleting messages record\n",
- (int)pid));
- tdb_delete(tdb, message_key_pid(procid));
-
- /*
- * INVALID_HANDLE is the closest I can think of -- vl
- */
- return NT_STATUS_INVALID_HANDLE;
- }
-
- DEBUG(2,("message to process %d failed - %s\n", (int)pid,
- strerror(errno)));
-
- /*
- * No call to map_nt_error_from_unix -- don't want to link in
- * errormap.o into lots of utils.
- */
-
- if (errno == EINVAL) return NT_STATUS_INVALID_PARAMETER;
- if (errno == EPERM) return NT_STATUS_ACCESS_DENIED;
- return NT_STATUS_UNSUCCESSFUL;
- }
-
- return NT_STATUS_OK;
-}
-
-/****************************************************************************
- Send a message to a particular pid.
-****************************************************************************/
-
-static NTSTATUS message_send_pid_internal(struct process_id pid, int msg_type,
- const void *buf, size_t len,
- BOOL duplicates_allowed,
- unsigned int timeout)
-{
- TDB_DATA kbuf;
- TDB_DATA dbuf;
- TDB_DATA old_dbuf;
- struct message_rec rec;
- uint8 *ptr;
- struct message_rec prec;
-
- /* NULL pointer means implicit length zero. */
- if (!buf) {
- SMB_ASSERT(len == 0);
- }
-
- /*
- * Doing kill with a non-positive pid causes messages to be
- * sent to places we don't want.
- */
-
- SMB_ASSERT(procid_to_pid(&pid) > 0);
-
- rec.msg_version = MESSAGE_VERSION;
- rec.msg_type = msg_type;
- rec.dest = pid;
- rec.src = procid_self();
- rec.len = buf ? len : 0;
-
- kbuf = message_key_pid(pid);
-
- dbuf.dptr = (uint8 *)SMB_MALLOC(len + sizeof(rec));
- if (!dbuf.dptr) {
- return NT_STATUS_NO_MEMORY;
- }
-
- memcpy(dbuf.dptr, &rec, sizeof(rec));
- if (len > 0 && buf)
- memcpy((void *)((char*)dbuf.dptr+sizeof(rec)), buf, len);
-
- dbuf.dsize = len + sizeof(rec);
-
- if (duplicates_allowed) {
-
- /* If duplicates are allowed we can just append the message and return. */
-
- /* lock the record for the destination */
- if (timeout) {
- if (tdb_chainlock_with_timeout(tdb, kbuf, timeout) == -1) {
- DEBUG(0,("message_send_pid_internal: failed to get "
- "chainlock with timeout %ul.\n", timeout));
- return NT_STATUS_IO_TIMEOUT;
- }
- } else {
- if (tdb_chainlock(tdb, kbuf) == -1) {
- DEBUG(0,("message_send_pid_internal: failed to get "
- "chainlock.\n"));
- return NT_STATUS_LOCK_NOT_GRANTED;
- }
- }
- tdb_append(tdb, kbuf, dbuf);
- tdb_chainunlock(tdb, kbuf);
-
- SAFE_FREE(dbuf.dptr);
- errno = 0; /* paranoia */
- return message_notify(pid);
- }
-
- /* lock the record for the destination */
- if (timeout) {
- if (tdb_chainlock_with_timeout(tdb, kbuf, timeout) == -1) {
- DEBUG(0,("message_send_pid_internal: failed to get chainlock "
- "with timeout %ul.\n", timeout));
- return NT_STATUS_IO_TIMEOUT;
- }
- } else {
- if (tdb_chainlock(tdb, kbuf) == -1) {
- DEBUG(0,("message_send_pid_internal: failed to get "
- "chainlock.\n"));
- return NT_STATUS_LOCK_NOT_GRANTED;
- }
- }
-
- old_dbuf = tdb_fetch(tdb, kbuf);
-
- if (!old_dbuf.dptr) {
- /* its a new record */
-
- tdb_store(tdb, kbuf, dbuf, TDB_REPLACE);
- tdb_chainunlock(tdb, kbuf);
-
- SAFE_FREE(dbuf.dptr);
- errno = 0; /* paranoia */
- return message_notify(pid);
- }
-
- /* Not a new record. Check for duplicates. */
-
- for(ptr = old_dbuf.dptr; ptr < old_dbuf.dptr + old_dbuf.dsize; ) {
- /*
- * First check if the message header matches, then, if it's a non-zero
- * sized message, check if the data matches. If so it's a duplicate and
- * we can discard it. JRA.
- */
-
- if (!memcmp(ptr, &rec, sizeof(rec))) {
- if (!len || (len && !memcmp( ptr + sizeof(rec), buf, len))) {
- tdb_chainunlock(tdb, kbuf);
- DEBUG(10,("message_send_pid_internal: discarding "
- "duplicate message.\n"));
- SAFE_FREE(dbuf.dptr);
- SAFE_FREE(old_dbuf.dptr);
- return NT_STATUS_OK;
- }
- }
- memcpy(&prec, ptr, sizeof(prec));
- ptr += sizeof(rec) + prec.len;
- }
-
- /* we're adding to an existing entry */
-
- tdb_append(tdb, kbuf, dbuf);
- tdb_chainunlock(tdb, kbuf);
-
- SAFE_FREE(old_dbuf.dptr);
- SAFE_FREE(dbuf.dptr);
-
- errno = 0; /* paranoia */
- return message_notify(pid);
-}
-
-/****************************************************************************
- Send a message to a particular pid - no timeout.
-****************************************************************************/
-
-NTSTATUS message_send_pid(struct process_id pid, int msg_type, const void *buf,
- size_t len, BOOL duplicates_allowed)
-{
- return message_send_pid_internal(pid, msg_type, buf, len,
- duplicates_allowed, 0);
-}
-
-/****************************************************************************
- Send a message to a particular pid, with timeout in seconds.
-****************************************************************************/
-
-NTSTATUS message_send_pid_with_timeout(struct process_id pid, int msg_type,
- const void *buf, size_t len,
- BOOL duplicates_allowed, unsigned int timeout)
-{
- return message_send_pid_internal(pid, msg_type, buf, len, duplicates_allowed,
- timeout);
-}
-
-/****************************************************************************
- Count the messages pending for a particular pid. Expensive....
-****************************************************************************/
-
-unsigned int messages_pending_for_pid(struct process_id pid)
-{
- TDB_DATA kbuf;
- TDB_DATA dbuf;
- uint8 *buf;
- unsigned int message_count = 0;
-
- kbuf = message_key_pid(pid);
-
- dbuf = tdb_fetch(tdb, kbuf);
- if (dbuf.dptr == NULL || dbuf.dsize == 0) {
- SAFE_FREE(dbuf.dptr);
- return 0;
- }
-
- for (buf = dbuf.dptr; dbuf.dsize > sizeof(struct message_rec);) {
- struct message_rec rec;
- memcpy(&rec, buf, sizeof(rec));
- buf += (sizeof(rec) + rec.len);
- dbuf.dsize -= (sizeof(rec) + rec.len);
- message_count++;
- }
-
- SAFE_FREE(dbuf.dptr);
- return message_count;
-}
-
-/****************************************************************************
- Retrieve all messages for the current process.
-****************************************************************************/
-
-static BOOL retrieve_all_messages(char **msgs_buf, size_t *total_len)
-{
- TDB_DATA kbuf;
- TDB_DATA dbuf;
- TDB_DATA null_dbuf;
-
- ZERO_STRUCT(null_dbuf);
-
- *msgs_buf = NULL;
- *total_len = 0;
-
- kbuf = message_key_pid(pid_to_procid(sys_getpid()));
-
- if (tdb_chainlock(tdb, kbuf) == -1)
- return False;
-
- dbuf = tdb_fetch(tdb, kbuf);
- /*
- * Replace with an empty record to keep the allocated
- * space in the tdb.
- */
- tdb_store(tdb, kbuf, null_dbuf, TDB_REPLACE);
- tdb_chainunlock(tdb, kbuf);
-
- if (dbuf.dptr == NULL || dbuf.dsize == 0) {
- SAFE_FREE(dbuf.dptr);
- return False;
- }
-
- *msgs_buf = (char *)dbuf.dptr;
- *total_len = dbuf.dsize;
-
- return True;
-}
-
-/****************************************************************************
- Parse out the next message for the current process.
-****************************************************************************/
-
-static BOOL message_recv(char *msgs_buf, size_t total_len, int *msg_type,
- struct process_id *src, char **buf, size_t *len)
-{
- struct message_rec rec;
- char *ret_buf = *buf;
-
- *buf = NULL;
- *len = 0;
-
- if (total_len - (ret_buf - msgs_buf) < sizeof(rec))
- return False;
-
- memcpy(&rec, ret_buf, sizeof(rec));
- ret_buf += sizeof(rec);
-
- if (rec.msg_version != MESSAGE_VERSION) {
- DEBUG(0,("message version %d received (expected %d)\n", rec.msg_version, MESSAGE_VERSION));
- return False;
- }
-
- if (rec.len > 0) {
- if (total_len - (ret_buf - msgs_buf) < rec.len)
- return False;
- }
-
- *len = rec.len;
- *msg_type = rec.msg_type;
- *src = rec.src;
- *buf = ret_buf;
-
- return True;
-}
-
-/****************************************************************************
- Receive and dispatch any messages pending for this process.
- JRA changed Dec 13 2006. Only one message handler now permitted per type.
- *NOTE*: Dispatch functions must be able to cope with incoming
- messages on an *odd* byte boundary.
-****************************************************************************/
-
-void message_dispatch(void)
-{
- int msg_type;
- struct process_id src;
- char *buf;
- char *msgs_buf;
- size_t len, total_len;
- int n_handled;
-
- if (!received_signal)
- return;
-
- DEBUG(10,("message_dispatch: received_signal = %d\n", received_signal));
-
- received_signal = 0;
-
- if (!retrieve_all_messages(&msgs_buf, &total_len))
- return;
-
- for (buf = msgs_buf; message_recv(msgs_buf, total_len, &msg_type, &src, &buf, &len); buf += len) {
- struct dispatch_fns *dfn;
-
- DEBUG(10,("message_dispatch: received msg_type=%d "
- "src_pid=%u\n", msg_type,
- (unsigned int) procid_to_pid(&src)));
-
- n_handled = 0;
- for (dfn = dispatch_fns; dfn; dfn = dfn->next) {
- if (dfn->msg_type == msg_type) {
- DEBUG(10,("message_dispatch: processing message of type %d.\n", msg_type));
- dfn->fn(msg_type, src,
- len ? (void *)buf : NULL, len,
- dfn->private_data);
- n_handled++;
- break;
- }
- }
- if (!n_handled) {
- DEBUG(5,("message_dispatch: warning: no handler registed for "
- "msg_type %d in pid %u\n",
- msg_type, (unsigned int)sys_getpid()));
- }
- }
- SAFE_FREE(msgs_buf);
+ messaging_send(msg_ctx, src, MSG_PONG, data);
}
/****************************************************************************
messages on an *odd* byte boundary.
****************************************************************************/
-void message_register(int msg_type,
- void (*fn)(int msg_type, struct process_id pid,
- void *buf, size_t len,
- void *private_data),
- void *private_data)
-{
- struct dispatch_fns *dfn;
-
- for (dfn = dispatch_fns; dfn; dfn = dfn->next) {
- if (dfn->msg_type == msg_type) {
- dfn->fn = fn;
- return;
- }
- }
-
- dfn = SMB_MALLOC_P(struct dispatch_fns);
-
- if (dfn != NULL) {
-
- ZERO_STRUCTPN(dfn);
-
- dfn->msg_type = msg_type;
- dfn->fn = fn;
- dfn->private_data = private_data;
-
- DLIST_ADD(dispatch_fns, dfn);
- }
- else {
-
- DEBUG(0,("message_register: Not enough memory. malloc failed!\n"));
- }
-}
-
-/****************************************************************************
- De-register the function for a particular message type.
-****************************************************************************/
-
-void message_deregister(int msg_type)
-{
- struct dispatch_fns *dfn, *next;
-
- for (dfn = dispatch_fns; dfn; dfn = next) {
- next = dfn->next;
- if (dfn->msg_type == msg_type) {
- DLIST_REMOVE(dispatch_fns, dfn);
- SAFE_FREE(dfn);
- return;
- }
- }
-}
-
struct msg_all {
+ struct messaging_context *msg_ctx;
int msg_type;
uint32 msg_flag;
const void *buf;
size_t len;
- BOOL duplicates;
int n_sent;
};
Send one of the messages for the broadcast.
****************************************************************************/
-static int traverse_fn(TDB_CONTEXT *the_tdb, TDB_DATA kbuf, TDB_DATA dbuf, void *state)
+static int traverse_fn(struct db_record *rec,
+ const struct connections_key *ckey,
+ const struct connections_data *crec,
+ void *state)
{
- struct connections_data crec;
struct msg_all *msg_all = (struct msg_all *)state;
NTSTATUS status;
- if (dbuf.dsize != sizeof(crec))
- return 0;
-
- memcpy(&crec, dbuf.dptr, sizeof(crec));
-
- if (crec.cnum != -1)
+ if (crec->cnum != -1)
return 0;
/* Don't send if the receiver hasn't registered an interest. */
- if(!(crec.bcast_msg_flags & msg_all->msg_flag))
+ if(!(crec->bcast_msg_flags & msg_all->msg_flag))
return 0;
/* If the msg send fails because the pid was not found (i.e. smbd died),
* the msg has already been deleted from the messages.tdb.*/
- status = message_send_pid(crec.pid, msg_all->msg_type,
- msg_all->buf, msg_all->len,
- msg_all->duplicates);
+ status = messaging_send_buf(msg_all->msg_ctx,
+ crec->pid, msg_all->msg_type,
+ (uint8 *)msg_all->buf, msg_all->len);
if (NT_STATUS_EQUAL(status, NT_STATUS_INVALID_HANDLE)) {
/* If the pid was not found delete the entry from connections.tdb */
DEBUG(2,("pid %s doesn't exist - deleting connections %d [%s]\n",
- procid_str_static(&crec.pid), crec.cnum, crec.servicename));
- tdb_delete(the_tdb, kbuf);
+ procid_str_static(&crec->pid), crec->cnum,
+ crec->servicename));
+
+ rec->delete_rec(rec);
}
msg_all->n_sent++;
return 0;
*
* @retval True for success.
**/
-BOOL message_send_all(TDB_CONTEXT *conn_tdb, int msg_type,
+BOOL message_send_all(struct messaging_context *msg_ctx,
+ int msg_type,
const void *buf, size_t len,
- BOOL duplicates_allowed,
int *n_sent)
{
struct msg_all msg_all;
msg_all.buf = buf;
msg_all.len = len;
- msg_all.duplicates = duplicates_allowed;
msg_all.n_sent = 0;
+ msg_all.msg_ctx = msg_ctx;
- tdb_traverse(conn_tdb, traverse_fn, &msg_all);
+ connections_forall(traverse_fn, &msg_all);
if (n_sent)
*n_sent = msg_all.n_sent;
return True;
}
-/*
- * Block and unblock receiving of messages. Allows removal of race conditions
- * when doing a fork and changing message disposition.
- */
-
-void message_block(void)
+struct event_context *messaging_event_context(struct messaging_context *msg_ctx)
{
- BlockSignals(True, SIGUSR1);
-}
-
-void message_unblock(void)
-{
- BlockSignals(False, SIGUSR1);
-}
-
-/*
- * Samba4 API wrapper around the Samba3 implementation. Yes, I know, we could
- * import the whole Samba4 thing, but I want notify.c from Samba4 in first.
- */
-
-struct messaging_callback {
- struct messaging_callback *prev, *next;
- uint32 msg_type;
- void (*fn)(struct messaging_context *msg, void *private_data,
- uint32_t msg_type,
- struct server_id server_id, DATA_BLOB *data);
- void *private_data;
-};
-
-struct messaging_context {
- struct server_id id;
- struct messaging_callback *callbacks;
-};
-
-static int messaging_context_destructor(struct messaging_context *ctx)
-{
- struct messaging_callback *cb;
-
- for (cb = ctx->callbacks; cb; cb = cb->next) {
- /*
- * We unconditionally remove all instances of our callback
- * from the tdb basis.
- */
- message_deregister(cb->msg_type);
- }
- return 0;
+ return msg_ctx->event_ctx;
}
struct messaging_context *messaging_init(TALLOC_CTX *mem_ctx,
struct event_context *ev)
{
struct messaging_context *ctx;
+ NTSTATUS status;
if (!(ctx = TALLOC_ZERO_P(mem_ctx, struct messaging_context))) {
return NULL;
}
ctx->id = server_id;
- talloc_set_destructor(ctx, messaging_context_destructor);
+ ctx->event_ctx = ev;
+
+ status = messaging_tdb_init(ctx, ctx, &ctx->local);
+
+ if (!NT_STATUS_IS_OK(status)) {
+ DEBUG(0, ("messaging_tdb_init failed: %s\n",
+ nt_errstr(status)));
+ TALLOC_FREE(ctx);
+ return NULL;
+ }
+
+#ifdef CLUSTER_SUPPORT
+ if (lp_clustering()) {
+ status = messaging_ctdbd_init(ctx, ctx, &ctx->remote);
+
+ if (!NT_STATUS_IS_OK(status)) {
+ DEBUG(0, ("messaging_ctdb_init failed: %s\n",
+ nt_errstr(status)));
+ TALLOC_FREE(ctx);
+ return NULL;
+ }
+ }
+#endif
+
+ messaging_register(ctx, NULL, MSG_PING, ping_message);
+
+ /* Register some debugging related messages */
+
+ register_msg_pool_usage(ctx);
+ register_dmalloc_msgs(ctx);
+ debug_register_msgs(ctx);
+
return ctx;
}
-static void messaging_callback(int msg_type, struct process_id pid,
- void *buf, size_t len, void *private_data)
+/*
+ * re-init after a fork
+ */
+NTSTATUS messaging_reinit(struct messaging_context *msg_ctx)
{
- struct messaging_context *ctx = talloc_get_type_abort(
- private_data, struct messaging_context);
- struct messaging_callback *cb, *next;
+#ifdef CLUSTER_SUPPORT
- for (cb = ctx->callbacks; cb; cb = next) {
- /*
- * Allow a callback to remove itself
- */
- next = cb->next;
+ TALLOC_FREE(msg_ctx->remote);
- if (msg_type == cb->msg_type) {
- DATA_BLOB blob;
- struct server_id id;
+ if (lp_clustering()) {
+ NTSTATUS status;
- blob.data = (uint8 *)buf;
- blob.length = len;
- id.id = pid;
+ status = messaging_ctdbd_init(msg_ctx, msg_ctx,
+ &msg_ctx->remote);
- cb->fn(ctx, cb->private_data, msg_type, id, &blob);
+ if (!NT_STATUS_IS_OK(status)) {
+ DEBUG(0, ("messaging_ctdb_init failed: %s\n",
+ nt_errstr(status)));
+ return status;
}
}
+
+#endif
+
+ return NT_STATUS_OK;
}
+
/*
* Register a dispatch function for a particular message type. Allow multiple
* registrants
*/
-NTSTATUS messaging_register(struct messaging_context *ctx, void *private_data,
+NTSTATUS messaging_register(struct messaging_context *msg_ctx,
+ void *private_data,
uint32_t msg_type,
void (*fn)(struct messaging_context *msg,
void *private_data,
{
struct messaging_callback *cb;
- if (!(cb = talloc(ctx, struct messaging_callback))) {
+ /*
+ * Only one callback per type
+ */
+
+ for (cb = msg_ctx->callbacks; cb != NULL; cb = cb->next) {
+ if (cb->msg_type == msg_type) {
+ cb->fn = fn;
+ cb->private_data = private_data;
+ return NT_STATUS_OK;
+ }
+ }
+
+ if (!(cb = talloc(msg_ctx, struct messaging_callback))) {
return NT_STATUS_NO_MEMORY;
}
cb->fn = fn;
cb->private_data = private_data;
- DLIST_ADD(ctx->callbacks, cb);
- message_register(msg_type, messaging_callback, ctx);
+ DLIST_ADD(msg_ctx->callbacks, cb);
return NT_STATUS_OK;
}
/*
Send a message to a particular server
*/
-NTSTATUS messaging_send(struct messaging_context *msg,
- struct server_id server,
- uint32_t msg_type, DATA_BLOB *data)
+NTSTATUS messaging_send(struct messaging_context *msg_ctx,
+ struct server_id server, uint32_t msg_type,
+ const DATA_BLOB *data)
{
- return message_send_pid_internal(server.id, msg_type, data->data,
- data->length, True, 0);
+ return msg_ctx->local->send_fn(msg_ctx, server, msg_type, data,
+ msg_ctx->local);
+}
+
+NTSTATUS messaging_send_buf(struct messaging_context *msg_ctx,
+ struct server_id server, uint32_t msg_type,
+ const uint8 *buf, size_t len)
+{
+ DATA_BLOB blob = data_blob_const(buf, len);
+ return messaging_send(msg_ctx, server, msg_type, &blob);
+}
+
+/*
+ Dispatch one messsaging_rec
+*/
+void messaging_dispatch_rec(struct messaging_context *msg_ctx,
+ struct messaging_rec *rec)
+{
+ struct messaging_callback *cb, *next;
+
+ for (cb = msg_ctx->callbacks; cb != NULL; cb = next) {
+ next = cb->next;
+ if (cb->msg_type == rec->msg_type) {
+ cb->fn(msg_ctx, cb->private_data, rec->msg_type,
+ rec->src, &rec->buf);
+ return;
+ }
+ }
+ return;
}
/** @} **/
git.samba.org / tprouty / samba.git / blobdiff