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-rw-r--r--source3/nmbd/nmbd_packets.c215
1 files changed, 113 insertions, 102 deletions
diff --git a/source3/nmbd/nmbd_packets.c b/source3/nmbd/nmbd_packets.c
index 5f900c4816..c511a4e354 100644
--- a/source3/nmbd/nmbd_packets.c
+++ b/source3/nmbd/nmbd_packets.c
@@ -22,6 +22,7 @@
#include "includes.h"
#include "nmbd/nmbd.h"
#include "../lib/util/select.h"
+#include "system/select.h"
extern int ClientNMB;
extern int ClientDGRAM;
@@ -1674,93 +1675,98 @@ on subnet %s\n", rrec->response_id, inet_ntoa(rrec->packet->ip), subrec->subnet_
plus the broadcast sockets.
***************************************************************************/
-static bool create_listen_fdset(fd_set **ppset, int **psock_array, int *listen_number, int *maxfd)
+struct socket_attributes {
+ enum packet_type type;
+ bool broadcast;
+};
+
+static bool create_listen_pollfds(struct pollfd **pfds,
+ struct socket_attributes **pattrs,
+ int *pnum_sockets)
{
- int *sock_array = NULL;
struct subnet_record *subrec = NULL;
int count = 0;
int num = 0;
- fd_set *pset = SMB_MALLOC_P(fd_set);
-
- if(pset == NULL) {
- DEBUG(0,("create_listen_fdset: malloc fail !\n"));
- return True;
- }
+ struct pollfd *fds;
+ struct socket_attributes *attrs;
- /* The Client* sockets */
- count++;
+ /* The ClientNMB and ClientDGRAM sockets */
+ count = 2;
/* Check that we can add all the fd's we need. */
- for (subrec = FIRST_SUBNET; subrec; subrec = NEXT_SUBNET_EXCLUDING_UNICAST(subrec))
- count++;
-
- /* each interface gets 4 sockets */
- count *= 4;
+ for (subrec = FIRST_SUBNET;
+ subrec != NULL;
+ subrec = NEXT_SUBNET_EXCLUDING_UNICAST(subrec)) {
+ count += 2; /* nmb_sock and dgram_sock */
+ if (subrec->nmb_bcast != -1) {
+ count += 1;
+ }
+ if (subrec->dgram_bcast != -1) {
+ count += 1;
+ }
+ }
- if(count > FD_SETSIZE) {
- DEBUG(0,("create_listen_fdset: Too many file descriptors needed (%d). We can \
-only use %d.\n", count, FD_SETSIZE));
- SAFE_FREE(pset);
- return True;
+ fds = TALLOC_ZERO_ARRAY(NULL, struct pollfd, count);
+ if (fds == NULL) {
+ DEBUG(1, ("create_listen_pollfds: malloc fail for fds. "
+ "size %d\n", count));
+ return true;
}
- if((sock_array = SMB_MALLOC_ARRAY(int, count)) == NULL) {
- DEBUG(0,("create_listen_fdset: malloc fail for socket array. size %d\n", count));
- SAFE_FREE(pset);
- return True;
+ attrs = TALLOC_ARRAY(NULL, struct socket_attributes, count);
+ if (fds == NULL) {
+ DEBUG(1, ("create_listen_pollfds: malloc fail for attrs. "
+ "size %d\n", count));
+ SAFE_FREE(fds);
+ return true;
}
- FD_ZERO(pset);
+ num = 0;
- /* Add in the lp_socket_address() interface on 137. */
- FD_SET(ClientNMB,pset);
- sock_array[num++] = ClientNMB;
- *maxfd = MAX( *maxfd, ClientNMB);
+ fds[num].fd = ClientNMB;
+ attrs[num].type = NMB_PACKET;
+ attrs[num].broadcast = false;
+ num += 1;
- /* the lp_socket_address() interface has only one socket */
- sock_array[num++] = -1;
+ fds[num].fd = ClientDGRAM;
+ attrs[num].type = DGRAM_PACKET;
+ attrs[num].broadcast = false;
+ num += 1;
- /* Add in the 137 sockets on all the interfaces. */
for (subrec = FIRST_SUBNET; subrec; subrec = NEXT_SUBNET_EXCLUDING_UNICAST(subrec)) {
- FD_SET(subrec->nmb_sock,pset);
- sock_array[num++] = subrec->nmb_sock;
- *maxfd = MAX( *maxfd, subrec->nmb_sock);
- sock_array[num++] = subrec->nmb_bcast;
+ fds[num].fd = subrec->nmb_sock;
+ attrs[num].type = NMB_PACKET;
+ attrs[num].broadcast = false;
+ num += 1;
+
if (subrec->nmb_bcast != -1) {
- FD_SET(subrec->nmb_bcast,pset);
- *maxfd = MAX( *maxfd, subrec->nmb_bcast);
+ fds[num].fd = subrec->nmb_bcast;
+ attrs[num].type = NMB_PACKET;
+ attrs[num].broadcast = true;
+ num += 1;
}
- }
- /* Add in the lp_socket_address() interface on 138. */
- FD_SET(ClientDGRAM,pset);
- sock_array[num++] = ClientDGRAM;
- *maxfd = MAX( *maxfd, ClientDGRAM);
+ fds[num].fd = subrec->dgram_sock;
+ attrs[num].type = DGRAM_PACKET;
+ attrs[num].broadcast = false;
+ num += 1;
- /* the lp_socket_address() interface has only one socket */
- sock_array[num++] = -1;
-
- /* Add in the 138 sockets on all the interfaces. */
- for (subrec = FIRST_SUBNET; subrec; subrec = NEXT_SUBNET_EXCLUDING_UNICAST(subrec)) {
- FD_SET(subrec->dgram_sock,pset);
- sock_array[num++] = subrec->dgram_sock;
- *maxfd = MAX( *maxfd, subrec->dgram_sock);
-
- sock_array[num++] = subrec->dgram_bcast;
if (subrec->dgram_bcast != -1) {
- FD_SET(subrec->dgram_bcast,pset);
- *maxfd = MAX( *maxfd, subrec->dgram_bcast);
+ fds[num].fd = subrec->dgram_bcast;
+ attrs[num].type = DGRAM_PACKET;
+ attrs[num].broadcast = true;
+ num += 1;
}
}
- *listen_number = count;
+ TALLOC_FREE(*pfds);
+ *pfds = fds;
- SAFE_FREE(*ppset);
- SAFE_FREE(*psock_array);
+ TALLOC_FREE(*pattrs);
+ *pattrs = attrs;
- *ppset = pset;
- *psock_array = sock_array;
+ *pnum_sockets = count;
return False;
}
@@ -1849,42 +1855,59 @@ static void free_processed_packet_list(struct processed_packet **pp_processed_pa
bool listen_for_packets(bool run_election)
{
- static fd_set *listen_set = NULL;
+ static struct pollfd *fds = NULL;
+ static struct socket_attributes *attrs = NULL;
static int listen_number = 0;
- static int *sock_array = NULL;
+ int num_sockets;
int i;
- static int maxfd = 0;
- fd_set r_fds;
- fd_set w_fds;
- int selrtn;
- struct timeval timeout;
+ int pollrtn;
+ int timeout;
#ifndef SYNC_DNS
int dns_fd;
+ int dns_pollidx = -1;
#endif
struct processed_packet *processed_packet_list = NULL;
- if(listen_set == NULL || rescan_listen_set) {
- if(create_listen_fdset(&listen_set, &sock_array, &listen_number, &maxfd)) {
+ if ((fds == NULL) || rescan_listen_set) {
+ if (create_listen_pollfds(&fds, &attrs, &listen_number)) {
DEBUG(0,("listen_for_packets: Fatal error. unable to create listen set. Exiting.\n"));
return True;
}
rescan_listen_set = False;
}
- memcpy((char *)&r_fds, (char *)listen_set, sizeof(fd_set));
- FD_ZERO(&w_fds);
+ /*
+ * "fds" can be enlarged by event_add_to_poll_args
+ * below. Shrink it again to what was given to us by
+ * create_listen_pollfds.
+ */
+
+ fds = TALLOC_REALLOC_ARRAY(NULL, fds, struct pollfd, listen_number);
+ if (fds == NULL) {
+ return true;
+ }
+ num_sockets = listen_number;
#ifndef SYNC_DNS
dns_fd = asyncdns_fd();
if (dns_fd != -1) {
- FD_SET(dns_fd, &r_fds);
- maxfd = MAX( maxfd, dns_fd);
+ fds = TALLOC_REALLOC_ARRAY(NULL, fds, struct pollfd, num_sockets+1);
+ if (fds == NULL) {
+ return true;
+ }
+ dns_pollidx = num_sockets;
+ fds[num_sockets].fd = dns_fd;
+ num_sockets += 1;
}
#endif
+ for (i=0; i<num_sockets; i++) {
+ fds[i].events = POLLIN|POLLHUP;
+ }
+
/* Process a signal and timer events now... */
- if (run_events(nmbd_event_context(), 0, NULL, NULL)) {
+ if (run_events_poll(nmbd_event_context(), 0, NULL, 0)) {
return False;
}
@@ -1895,24 +1918,25 @@ bool listen_for_packets(bool run_election)
* the time we are expecting the next netbios packet.
*/
- timeout.tv_sec = (run_election||num_response_packets) ? 1 : NMBD_SELECT_LOOP;
- timeout.tv_usec = 0;
+ timeout = ((run_election||num_response_packets)
+ ? 1 : NMBD_SELECT_LOOP) * 1000;
- event_add_to_select_args(nmbd_event_context(),
- &r_fds, &w_fds, &timeout, &maxfd);
+ event_add_to_poll_args(nmbd_event_context(), NULL,
+ &fds, &num_sockets, &timeout);
- selrtn = sys_select(maxfd+1,&r_fds,&w_fds,NULL,&timeout);
+ pollrtn = sys_poll(fds, num_sockets, timeout);
- if (run_events(nmbd_event_context(), selrtn, &r_fds, &w_fds)) {
+ if (run_events_poll(nmbd_event_context(), pollrtn, fds, num_sockets)) {
return False;
}
- if (selrtn == -1) {
+ if (pollrtn == -1) {
return False;
}
#ifndef SYNC_DNS
- if (dns_fd != -1 && FD_ISSET(dns_fd,&r_fds)) {
+ if ((dns_fd != -1) && (dns_pollidx != -1) &&
+ (fds[dns_pollidx].revents & (POLLIN|POLLHUP|POLLERR))) {
run_dns_queue();
}
#endif
@@ -1924,15 +1948,11 @@ bool listen_for_packets(bool run_election)
int client_fd;
int client_port;
- if (sock_array[i] == -1) {
+ if ((fds[i].revents & (POLLIN|POLLHUP|POLLERR)) == 0) {
continue;
}
- if (!FD_ISSET(sock_array[i],&r_fds)) {
- continue;
- }
-
- if (i < (listen_number/2)) {
+ if (attrs[i].type == NMB_PACKET) {
/* Port 137 */
packet_type = NMB_PACKET;
packet_name = "nmb";
@@ -1946,7 +1966,7 @@ bool listen_for_packets(bool run_election)
client_port = DGRAM_PORT;
}
- packet = read_packet(sock_array[i], packet_type);
+ packet = read_packet(fds[i].fd, packet_type);
if (!packet) {
continue;
}
@@ -1956,7 +1976,7 @@ bool listen_for_packets(bool run_election)
* only is set then check it came from one of our local nets.
*/
if (lp_bind_interfaces_only() &&
- (sock_array[i] == client_fd) &&
+ (fds[i].fd == client_fd) &&
(!is_local_net_v4(packet->ip))) {
DEBUG(7,("discarding %s packet sent to broadcast socket from %s:%d\n",
packet_name, inet_ntoa(packet->ip), packet->port));
@@ -1991,21 +2011,12 @@ bool listen_for_packets(bool run_election)
store_processed_packet(&processed_packet_list, packet);
- /*
- * 0,2,4,... are unicast sockets
- * 1,3,5,... are broadcast sockets
- *
- * on broadcast socket we only receive packets
- * and send replies via the unicast socket.
- *
- * 0,1 and 2,3 and ... belong together.
- */
- if ((i % 2) != 0) {
+ if (attrs[i].broadcast) {
/* this is a broadcast socket */
- packet->send_fd = sock_array[i-1];
+ packet->send_fd = fds[i-1].fd;
} else {
/* this is already a unicast socket */
- packet->send_fd = sock_array[i];
+ packet->send_fd = fds[i].fd;
}
queue_packet(packet);
generated by cgit (git 2.34.1) at 2024-11-25 08:52:14 +0000