bool server_start(int port)
{
bool success =
_create_socket(port) &&
_bind_to_socket(port) &&
_listen_on_socket();
if (!success){
_close_socket();
return false;
}
log_trace("Accepting connections on port %d", port);
while(success){
int acceptedfd;
success = _accept_on_socket(&acceptedfd);
if (success){
session_start(acceptedfd);
}
else{
break;
}
}
log_print(LOG_INFO, "Stopped accepting connections on port %d", port);
_close_socket();
return true;
}
VSL::VSOCKET accept(VSL::VSOCKET socket) {
LOCK(mu,0);
shared_ptr<Node> con = _find_socket(socket);
if(con) {
unique_ptr<Node> client = con->accept();
if(client) {
VSOCKET s = _create_socket();
sockets[s] = move(client);
return s;
}
return 0; // listening but no connection
}
return -1; // invalid descriptor
}
static int
_domain_socket_create(const char *dir, const char *nodename,
uint32_t jobid, uint32_t stepid)
{
int fd;
char *name = NULL;
struct stat stat_buf;
/*
* Make sure that "dir" exists and is a directory.
*/
if (stat(dir, &stat_buf) < 0) {
error("Domain socket directory %s: %m", dir);
return -1;
} else if (!S_ISDIR(stat_buf.st_mode)) {
error("%s is not a directory", dir);
return -1;
}
/*
* Now build the name of socket, and create the socket.
*/
xstrfmtcat(name, "%s/%s_%u.%u", dir, nodename, jobid, stepid);
/*
* First check to see if the named socket already exists.
*/
if (stat(name, &stat_buf) == 0) {
/* Vestigial from a slurmd crash or job requeue that did not
* happen properly (very rare conditions). Unlink the file
* and recreate it.
*/
if (unlink(name) != 0) {
error("%s: failed unlink(%s) job %u step %u %m",
__func__, name, jobid, stepid);
xfree(name);
errno = ESLURMD_STEP_EXISTS;
return -1;
}
}
fd = _create_socket(name);
if (fd < 0)
fatal("Could not create domain socket: %m");
chmod(name, 0777);
socket_name = name;
return fd;
}
void sw_init( socket_work* sw, mx_list_t* ml)
{
GList* iter;
struct sockaddr_in sin;
sin.sin_port = htons( 25 );
sin.sin_family = AF_INET;
bzero(&sin.sin_zero, sizeof(sin.sin_zero));
for ( iter = g_list_first( ml->mxs ) ;
NULL != iter ;
iter = g_list_next( iter ) ) {
int cret ;
int sock = _create_socket( iter->data );
// at this point, we have a non-blocking socket ready to use
struct in_addr* in = (struct in_addr*)(iter->data);
sin.sin_addr.s_addr = in->s_addr;
cret = connect( sock, (struct sockaddr*)&sin, sizeof(sin) ) ;
if ( ( -1 == cret ) && ( EINPROGRESS == errno ) ) {
// connection is happening in the background
// prepare this socket for select
FD_SET( sock, &sw->readset );
sw->max_socket = MAX( sock, sw->max_socket );
sw->socket_list[ sw->waiting_sockets ] = sock;
sw->waiting_sockets++;
} else if ( cret == 0 ) {
// connection already successful
ml->mx_ok++;
close( sock );
} else {
// connection already failed
}
}
}
static int _sock_dup(StdFileDes *fp)
{ struct SocketSettings *lss;
StdFileDes *fp2;
int rc;
if ((fp2=_create_socket(fp->lx_family, fp->lx_domain, fp->lx_protocol)) == NULL)
return -1;
switch (lss=_lx_get_socket_settings(),lss->lx_network_type) {
case LX_AS225:
/* only INET-225 has dup */
if (lss->lx_SocketBase->lib_Version >= 8)
rc = SOCK_dup(fp->lx_sock);
else
rc = fp->lx_sock;
break;
case LX_AMITCP:
rc = TCP_Dup2Socket(fp->lx_sock, -1);
break;
default:
rc = -1;
break;
}
if (rc >= 0) {
fp2->lx_sock = rc; rc = fp2->lx_pos;
}
else {
fp2->lx_inuse = 0;
}
return rc;
}
VSL::VSOCKET socket() {
LOCK(mu,0);
VSOCKET sock = _create_socket();
sockets[sock] = shared_ptr<Node>();
return sock;
}
static int init_inet_daemon(int *argc,char ***argv,struct SocketSettings *lss)
{ StdFileDes *fp = NULL;
int sock, err, i;
lss->lx_isdaemon = 0;
if (lss->lx_network_type == LX_AS225) {
/* code loosely derived from timed.c from AS225r2 */
/* this program was called from inetd if :
* 1> the first arg is a valid protocol(call getprotobyname)
* 2> inetd is started - FindPort("inetd") returns non-NULL
* NOT 3> argv[0] is the program found in inetd.conf for the program (scan inetd.conf)
*/
/* save a little time with this comparison */
if (err=-1,*argc >= 4) {
struct servent *serv1 = SOCK_getservbyname((*argv)[1],"tcp");
struct servent *serv2 = SOCK_getservbyname((*argv)[1],"udp");
if ((serv1 || serv2) && FindPort("inetd")) {
long sock_arg;
sock_arg = atol((*argv)[2]);
lss->lx_sockid = atoi((*argv)[3]);
sock = SOCK_inherit((void *)sock_arg);
if (sock >= 0) {
lss->lx_isdaemon = 1; /* I was started from inetd */
do {
if ((fp=_create_socket(AF_INET, SOCK_STREAM, 0)) == NULL)
break;
fp->lx_sock = sock;
/* get rid of the args that AS225 put in */
for (i=1; i < (*argc)-3; i++)
(*argv)[i] = (*argv)[i+3];
(*argc) -= 3;
err = 0;
} while (0);
}
}
}
return ((errno=err) ? -1 : fp->lx_pos);
}
if (lss->lx_network_type == LX_AMITCP) {
struct Process *me = (struct Process *)FindTask(NULL);
struct DaemonMessage *dm = (struct DaemonMessage *)me->pr_ExitData;
DB( BUG("daemon message is %lx\n", dm); )
if (dm == NULL) {
/*
* No DaemonMessage, return error code - probably not an inet daemon
*/
return -1;
}
/*
* Obtain the server socket
*/
sock = TCP_ObtainSocket(dm->dm_Id, dm->dm_Family, dm->dm_Type, 0);
DB( BUG("Obtained socket is %ld\n", sock); )
if (sock < 0) {