ctdb over TCP
Copyright (C) Andrew Tridgell 2006
+ Copyright (C) Ronnie Sahlberg 2008
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
along with this program; if not, see <http://www.gnu.org/licenses/>.
*/
-#include "includes.h"
-#include "lib/events/events.h"
-#include "lib/tdb/include/tdb.h"
+#include "replace.h"
#include "system/network.h"
#include "system/filesys.h"
-#include "../include/ctdb_private.h"
+
+#include <talloc.h>
+#include <tevent.h>
+
+#include "lib/util/debug.h"
+#include "lib/util/time.h"
+
+#include "ctdb_private.h"
+
+#include "common/system.h"
+#include "common/common.h"
+#include "common/logging.h"
+
#include "ctdb_tcp.h"
/*
/*
called when a complete packet has come in - should not happen on this socket
+ unless the other side closes the connection with RST or FIN
*/
void ctdb_tcp_tnode_cb(uint8_t *data, size_t cnt, void *private_data)
{
}
ctdb_tcp_stop_connection(node);
- tnode->connect_te = event_add_timed(node->ctdb->ev, tnode, timeval_zero(),
- ctdb_tcp_node_connect, node);
+ tnode->connect_te = tevent_add_timer(node->ctdb->ev, tnode,
+ timeval_current_ofs(3, 0),
+ ctdb_tcp_node_connect, node);
}
/*
called when socket becomes writeable on connect
*/
-static void ctdb_node_connect_write(struct event_context *ev, struct fd_event *fde,
+static void ctdb_node_connect_write(struct tevent_context *ev,
+ struct tevent_fd *fde,
uint16_t flags, void *private_data)
{
struct ctdb_node *node = talloc_get_type(private_data,
if (getsockopt(tnode->fd, SOL_SOCKET, SO_ERROR, &error, &len) != 0 ||
error != 0) {
ctdb_tcp_stop_connection(node);
- tnode->connect_te = event_add_timed(ctdb->ev, tnode,
+ tnode->connect_te = tevent_add_timer(ctdb->ev, tnode,
timeval_current_ofs(1, 0),
ctdb_tcp_node_connect, node);
return;
talloc_free(tnode->connect_fde);
tnode->connect_fde = NULL;
- setsockopt(tnode->fd,IPPROTO_TCP,TCP_NODELAY,(char *)&one,sizeof(one));
- setsockopt(tnode->fd,SOL_SOCKET,SO_KEEPALIVE,(char *)&one,sizeof(one));
+ if (setsockopt(tnode->fd,IPPROTO_TCP,TCP_NODELAY,(char *)&one,sizeof(one)) == -1) {
+ DEBUG(DEBUG_WARNING, ("Failed to set TCP_NODELAY on fd - %s\n",
+ strerror(errno)));
+ }
+ if (setsockopt(tnode->fd,SOL_SOCKET,SO_KEEPALIVE,(char *)&one,sizeof(one)) == -1) {
+ DEBUG(DEBUG_WARNING, ("Failed to set KEEPALIVE on fd - %s\n",
+ strerror(errno)));
+ }
ctdb_queue_set_fd(tnode->out_queue, tnode->fd);
/* the queue subsystem now owns this fd */
tnode->fd = -1;
-
- /* tell the ctdb layer we are connected */
- node->ctdb->upcalls->node_connected(node);
}
-static int ctdb_tcp_get_address(struct ctdb_context *ctdb,
- const char *address, struct in_addr *addr)
-{
- if (inet_pton(AF_INET, address, addr) <= 0) {
- struct hostent *he = gethostbyname(address);
- if (he == NULL || he->h_length > sizeof(*addr)) {
- ctdb_set_error(ctdb, "invalid nework address '%s'\n",
- address);
- return -1;
- }
- memcpy(addr, he->h_addr, he->h_length);
- }
- return 0;
-}
-
/*
called when we should try and establish a tcp connection to a node
*/
-void ctdb_tcp_node_connect(struct event_context *ev, struct timed_event *te,
+void ctdb_tcp_node_connect(struct tevent_context *ev, struct tevent_timer *te,
struct timeval t, void *private_data)
{
struct ctdb_node *node = talloc_get_type(private_data,
struct ctdb_tcp_node *tnode = talloc_get_type(node->private_data,
struct ctdb_tcp_node);
struct ctdb_context *ctdb = node->ctdb;
- struct sockaddr_in sock_in;
- struct sockaddr_in sock_out;
+ ctdb_sock_addr sock_in;
+ int sockin_size;
+ int sockout_size;
+ ctdb_sock_addr sock_out;
ctdb_tcp_stop_connection(node);
- tnode->fd = socket(PF_INET, SOCK_STREAM, IPPROTO_TCP);
+ sock_out = node->address;
- set_nonblocking(tnode->fd);
- set_close_on_exec(tnode->fd);
-
- ZERO_STRUCT(sock_out);
-#ifdef HAVE_SOCK_SIN_LEN
- sock_out.sin_len = sizeof(sock_out);
-#endif
- if (ctdb_tcp_get_address(ctdb, node->address.address, &sock_out.sin_addr) != 0) {
+ tnode->fd = socket(sock_out.sa.sa_family, SOCK_STREAM, IPPROTO_TCP);
+ if (tnode->fd == -1) {
+ DEBUG(DEBUG_ERR, (__location__ "Failed to create socket\n"));
return;
}
- sock_out.sin_port = htons(node->address.port);
- sock_out.sin_family = PF_INET;
+ set_nonblocking(tnode->fd);
+ set_close_on_exec(tnode->fd);
+ DEBUG(DEBUG_DEBUG, (__location__ " Created TCP SOCKET FD:%d\n", tnode->fd));
/* Bind our side of the socketpair to the same address we use to listen
* on incoming CTDB traffic.
* the remote side is actually routable in case CTDB traffic will run on
* a dedicated non-routeable network.
*/
- ZERO_STRUCT(sock_in);
-#ifdef HAVE_SOCK_SIN_LEN
- sock_in.sin_len = sizeof(sock_in);
-#endif
- if (ctdb_tcp_get_address(ctdb, ctdb->address.address, &sock_in.sin_addr) != 0) {
+ sock_in = *ctdb->address;
+
+ /* AIX libs check to see if the socket address and length
+ arguments are consistent with each other on calls like
+ connect(). Can not get by with just sizeof(sock_in),
+ need sizeof(sock_in.ip).
+ */
+ switch (sock_in.sa.sa_family) {
+ case AF_INET:
+ sock_in.ip.sin_port = 0 /* Any port */;
+ sockin_size = sizeof(sock_in.ip);
+ sockout_size = sizeof(sock_out.ip);
+ break;
+ case AF_INET6:
+ sock_in.ip6.sin6_port = 0 /* Any port */;
+ sockin_size = sizeof(sock_in.ip6);
+ sockout_size = sizeof(sock_out.ip6);
+ break;
+ default:
+ DEBUG(DEBUG_ERR, (__location__ " unknown family %u\n",
+ sock_in.sa.sa_family));
+ close(tnode->fd);
return;
}
- sock_in.sin_port = htons(0); /* INPORT_ANY is not always available */
- sock_in.sin_family = PF_INET;
- bind(tnode->fd, (struct sockaddr *)&sock_in, sizeof(sock_in));
- if (connect(tnode->fd, (struct sockaddr *)&sock_out, sizeof(sock_out)) != 0 &&
+ if (bind(tnode->fd, (struct sockaddr *)&sock_in, sockin_size) == -1) {
+ DEBUG(DEBUG_ERR, (__location__ "Failed to bind socket %s(%d)\n",
+ strerror(errno), errno));
+ close(tnode->fd);
+ return;
+ }
+
+ if (connect(tnode->fd, (struct sockaddr *)&sock_out, sockout_size) != 0 &&
errno != EINPROGRESS) {
ctdb_tcp_stop_connection(node);
- tnode->connect_te = event_add_timed(ctdb->ev, tnode,
- timeval_current_ofs(1, 0),
- ctdb_tcp_node_connect, node);
+ tnode->connect_te = tevent_add_timer(ctdb->ev, tnode,
+ timeval_current_ofs(1, 0),
+ ctdb_tcp_node_connect, node);
return;
}
/* non-blocking connect - wait for write event */
- tnode->connect_fde = event_add_fd(node->ctdb->ev, tnode, tnode->fd,
- EVENT_FD_WRITE|EVENT_FD_READ,
- ctdb_node_connect_write, node);
+ tnode->connect_fde = tevent_add_fd(node->ctdb->ev, tnode, tnode->fd,
+ TEVENT_FD_WRITE|TEVENT_FD_READ,
+ ctdb_node_connect_write, node);
/* don't give it long to connect - retry in one second. This ensures
that we find a node is up quickly (tcp normally backs off a syn reply
delay by quite a lot) */
- tnode->connect_te = event_add_timed(ctdb->ev, tnode, timeval_current_ofs(1, 0),
- ctdb_tcp_node_connect, node);
+ tnode->connect_te = tevent_add_timer(ctdb->ev, tnode,
+ timeval_current_ofs(1, 0),
+ ctdb_tcp_node_connect, node);
}
/*
currently makes no attempt to check if the connection is really from a ctdb
node in our cluster
*/
-static void ctdb_listen_event(struct event_context *ev, struct fd_event *fde,
+static void ctdb_listen_event(struct tevent_context *ev, struct tevent_fd *fde,
uint16_t flags, void *private_data)
{
struct ctdb_context *ctdb = talloc_get_type(private_data, struct ctdb_context);
struct ctdb_tcp *ctcp = talloc_get_type(ctdb->private_data, struct ctdb_tcp);
- struct sockaddr_in addr;
+ ctdb_sock_addr addr;
socklen_t len;
int fd, nodeid;
struct ctdb_incoming *in;
int one = 1;
- const char *incoming_node;
memset(&addr, 0, sizeof(addr));
len = sizeof(addr);
fd = accept(ctcp->listen_fd, (struct sockaddr *)&addr, &len);
if (fd == -1) return;
- incoming_node = inet_ntoa(addr.sin_addr);
- nodeid = ctdb_ip_to_nodeid(ctdb, incoming_node);
+ nodeid = ctdb_ip_to_nodeid(ctdb, &addr);
if (nodeid == -1) {
- DEBUG(0, ("Refused connection from unknown node %s\n", incoming_node));
+ DEBUG(DEBUG_ERR, ("Refused connection from unknown node %s\n", ctdb_addr_to_str(&addr)));
close(fd);
return;
}
set_nonblocking(in->fd);
set_close_on_exec(in->fd);
- setsockopt(in->fd,SOL_SOCKET,SO_KEEPALIVE,(char *)&one,sizeof(one));
+ DEBUG(DEBUG_DEBUG, (__location__ " Created SOCKET FD:%d to incoming ctdb connection\n", fd));
+
+ if (setsockopt(in->fd,SOL_SOCKET,SO_KEEPALIVE,(char *)&one,sizeof(one)) == -1) {
+ DEBUG(DEBUG_WARNING, ("Failed to set KEEPALIVE on fd - %s\n",
+ strerror(errno)));
+ }
- in->queue = ctdb_queue_setup(ctdb, in, in->fd, CTDB_TCP_ALIGNMENT,
- ctdb_tcp_read_cb, in);
+ in->queue = ctdb_queue_setup(ctdb, in, in->fd, CTDB_TCP_ALIGNMENT,
+ ctdb_tcp_read_cb, in, "ctdbd-%s", ctdb_addr_to_str(&addr));
}
{
struct ctdb_tcp *ctcp = talloc_get_type(ctdb->private_data,
struct ctdb_tcp);
- struct sockaddr_in sock;
+ ctdb_sock_addr sock;
int lock_fd, i;
- const char *lock_path = "/tmp/.ctdb_socket_lock";
+ const char *lock_path = CTDB_RUNDIR "/.socket_lock";
struct flock lock;
+ int one = 1;
+ int sock_size;
+ struct tevent_fd *fde;
+
+ /* If there are no nodes, then it won't be possible to find
+ * the first one. Log a failure and short circuit the whole
+ * process.
+ */
+ if (ctdb->num_nodes == 0) {
+ DEBUG(DEBUG_CRIT,("No nodes available to attempt bind to - is the nodes file empty?\n"));
+ return -1;
+ }
/* in order to ensure that we don't get two nodes with the
same adddress, we must make the bind() and listen() calls
binds if the first socket is in LISTEN state */
lock_fd = open(lock_path, O_RDWR|O_CREAT, 0666);
if (lock_fd == -1) {
- DEBUG(0,("Unable to open %s\n", lock_path));
+ DEBUG(DEBUG_CRIT,("Unable to open %s\n", lock_path));
return -1;
}
lock.l_pid = 0;
if (fcntl(lock_fd, F_SETLKW, &lock) != 0) {
- DEBUG(0,("Unable to lock %s\n", lock_path));
+ DEBUG(DEBUG_CRIT,("Unable to lock %s\n", lock_path));
close(lock_fd);
return -1;
}
- for (i=0;i<ctdb->num_nodes;i++) {
- /* if node_ip is specified we will only try to bind to that
- ip.
- */
- if (ctdb->node_ip != NULL) {
- if (strcmp(ctdb->node_ip, ctdb->nodes[i]->address.address)) {
- continue;
- }
+ for (i=0; i < ctdb->num_nodes; i++) {
+ if (ctdb->nodes[i]->flags & NODE_FLAGS_DELETED) {
+ continue;
}
+ sock = ctdb->nodes[i]->address;
- ZERO_STRUCT(sock);
-#ifdef HAVE_SOCK_SIN_LEN
- sock.sin_len = sizeof(sock);
-#endif
- sock.sin_port = htons(ctdb->nodes[i]->address.port);
- sock.sin_family = PF_INET;
- if (ctdb_tcp_get_address(ctdb,
- ctdb->nodes[i]->address.address,
- &sock.sin_addr) != 0) {
+ switch (sock.sa.sa_family) {
+ case AF_INET:
+ sock_size = sizeof(sock.ip);
+ break;
+ case AF_INET6:
+ sock_size = sizeof(sock.ip6);
+ break;
+ default:
+ DEBUG(DEBUG_ERR, (__location__ " unknown family %u\n",
+ sock.sa.sa_family));
continue;
}
-
- if (bind(ctcp->listen_fd, (struct sockaddr * )&sock,
- sizeof(sock)) == 0) {
+
+ ctcp->listen_fd = socket(sock.sa.sa_family, SOCK_STREAM, IPPROTO_TCP);
+ if (ctcp->listen_fd == -1) {
+ ctdb_set_error(ctdb, "socket failed\n");
+ continue;
+ }
+
+ set_close_on_exec(ctcp->listen_fd);
+
+ if (setsockopt(ctcp->listen_fd,SOL_SOCKET,SO_REUSEADDR,
+ (char *)&one,sizeof(one)) == -1) {
+ DEBUG(DEBUG_WARNING, ("Failed to set REUSEADDR on fd - %s\n",
+ strerror(errno)));
+ }
+
+ if (bind(ctcp->listen_fd, (struct sockaddr * )&sock, sock_size) == 0) {
break;
}
+
+ if (errno == EADDRNOTAVAIL) {
+ DEBUG(DEBUG_DEBUG,(__location__ " Failed to bind() to socket. %s(%d)\n",
+ strerror(errno), errno));
+ } else {
+ DEBUG(DEBUG_ERR,(__location__ " Failed to bind() to socket. %s(%d)\n",
+ strerror(errno), errno));
+ }
+
+ close(ctcp->listen_fd);
+ ctcp->listen_fd = -1;
}
-
+
if (i == ctdb->num_nodes) {
- DEBUG(0,("Unable to bind to any of the node addresses - giving up\n"));
+ DEBUG(DEBUG_CRIT,("Unable to bind to any of the node addresses - giving up\n"));
goto failed;
}
- ctdb->address = ctdb->nodes[i]->address;
- ctdb->name = talloc_asprintf(ctdb, "%s:%u",
- ctdb->address.address,
- ctdb->address.port);
- ctdb->pnn = ctdb->nodes[i]->pnn;
- ctdb->nodes[i]->flags &= ~NODE_FLAGS_DISCONNECTED;
- DEBUG(DEBUG_INFO,("ctdb chose network address %s:%u pnn %u\n",
- ctdb->address.address,
- ctdb->address.port,
- ctdb->pnn));
+ ctdb->address = talloc_memdup(ctdb,
+ &ctdb->nodes[i]->address,
+ sizeof(ctdb_sock_addr));
+ if (ctdb->address == NULL) {
+ ctdb_set_error(ctdb, "Out of memory at %s:%d",
+ __FILE__, __LINE__);
+ goto failed;
+ }
+
+ ctdb->name = talloc_asprintf(ctdb, "%s:%u",
+ ctdb_addr_to_str(ctdb->address),
+ ctdb_addr_to_port(ctdb->address));
+ if (ctdb->name == NULL) {
+ ctdb_set_error(ctdb, "Out of memory at %s:%d",
+ __FILE__, __LINE__);
+ goto failed;
+ }
+ DEBUG(DEBUG_INFO,("ctdb chose network address %s\n", ctdb->name));
if (listen(ctcp->listen_fd, 10) == -1) {
goto failed;
}
- event_add_fd(ctdb->ev, ctcp, ctcp->listen_fd, EVENT_FD_READ|EVENT_FD_AUTOCLOSE,
- ctdb_listen_event, ctdb);
+ fde = tevent_add_fd(ctdb->ev, ctcp, ctcp->listen_fd, TEVENT_FD_READ,
+ ctdb_listen_event, ctdb);
+ tevent_fd_set_auto_close(fde);
close(lock_fd);
+
return 0;
-
+
failed:
close(lock_fd);
- close(ctcp->listen_fd);
- ctcp->listen_fd = -1;
+ if (ctcp->listen_fd != -1) {
+ close(ctcp->listen_fd);
+ ctcp->listen_fd = -1;
+ }
return -1;
}
{
struct ctdb_tcp *ctcp = talloc_get_type(ctdb->private_data,
struct ctdb_tcp);
- struct sockaddr_in sock;
+ ctdb_sock_addr sock;
+ int sock_size;
int one = 1;
+ struct tevent_fd *fde;
+
+ /* we can either auto-bind to the first available address, or we can
+ use a specified address */
+ if (!ctdb->address) {
+ return ctdb_tcp_listen_automatic(ctdb);
+ }
+
+ sock = *ctdb->address;
+
+ switch (sock.sa.sa_family) {
+ case AF_INET:
+ sock_size = sizeof(sock.ip);
+ break;
+ case AF_INET6:
+ sock_size = sizeof(sock.ip6);
+ break;
+ default:
+ DEBUG(DEBUG_ERR, (__location__ " unknown family %u\n",
+ sock.sa.sa_family));
+ goto failed;
+ }
- ctcp->listen_fd = socket(PF_INET, SOCK_STREAM, IPPROTO_TCP);
+ ctcp->listen_fd = socket(sock.sa.sa_family, SOCK_STREAM, IPPROTO_TCP);
if (ctcp->listen_fd == -1) {
ctdb_set_error(ctdb, "socket failed\n");
return -1;
set_close_on_exec(ctcp->listen_fd);
- setsockopt(ctcp->listen_fd,SOL_SOCKET,SO_REUSEADDR,(char *)&one,sizeof(one));
-
- /* we can either auto-bind to the first available address, or we can
- use a specified address */
- if (!ctdb->address.address) {
- return ctdb_tcp_listen_automatic(ctdb);
+ if (setsockopt(ctcp->listen_fd,SOL_SOCKET,SO_REUSEADDR,(char *)&one,sizeof(one)) == -1) {
+ DEBUG(DEBUG_WARNING, ("Failed to set REUSEADDR on fd - %s\n",
+ strerror(errno)));
}
- ZERO_STRUCT(sock);
-#ifdef HAVE_SOCK_SIN_LEN
- sock.sin_len = sizeof(sock);
-#endif
- sock.sin_port = htons(ctdb->address.port);
- sock.sin_family = PF_INET;
-
- if (ctdb_tcp_get_address(ctdb, ctdb->address.address,
- &sock.sin_addr) != 0) {
- goto failed;
- }
-
- if (bind(ctcp->listen_fd, (struct sockaddr * )&sock, sizeof(sock)) != 0) {
+ if (bind(ctcp->listen_fd, (struct sockaddr * )&sock, sock_size) != 0) {
+ DEBUG(DEBUG_ERR,(__location__ " Failed to bind() to socket. %s(%d)\n", strerror(errno), errno));
goto failed;
}
goto failed;
}
- event_add_fd(ctdb->ev, ctcp, ctcp->listen_fd, EVENT_FD_READ|EVENT_FD_AUTOCLOSE,
- ctdb_listen_event, ctdb);
+ fde = tevent_add_fd(ctdb->ev, ctcp, ctcp->listen_fd, TEVENT_FD_READ,
+ ctdb_listen_event, ctdb);
+ tevent_fd_set_auto_close(fde);
return 0;
failed:
- close(ctcp->listen_fd);
+ if (ctcp->listen_fd != -1) {
+ close(ctcp->listen_fd);
+ }
ctcp->listen_fd = -1;
return -1;
}
git.samba.org / obnox / samba / samba-obnox.git / blobdiff