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chris |
/*
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**************************************************************************
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*
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* Component: RDBG
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* Module: servcon.c
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*
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* Synopsis: Management of RPC client connections.
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*
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* $Id: servcon.c,v 1.1.1.1 2001-07-10 10:01:06 chris Exp $
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*
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**************************************************************************
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*/
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#include <sys/errno.h>
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#include <rdbg/rdbg.h>
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#include <rdbg/servrpc.h>
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/*
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* ConnCreate - create a new connection entry for a client.
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*
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* This function finds an empty entry in the connection array
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* or makes space. It fills in the fields that are passed to it.
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* It does not do any validation on net addresses nor does it
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* start a validation cycle on other clients. This is done by
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* the caller.
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*/
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int
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ConnCreate (struct svc_req* rqstp, open_in* in)
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{
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NET_OPAQUE sender;
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int idx;
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CONN_LIST* clst;
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setErrno (0);
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/* Convert to valid Net address */
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if (! TspTranslateRpcAddr (rqstp, &sender)) {
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DPRINTF (("ConnCreate: TspTranslateRpcAddr failed\n"));
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return -1;
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}
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if (! TspValidateAddr ((NET_OPAQUE*) in->back_port, &sender)) {
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DPRINTF (("ConnCreate: TspValidateAddr failed\n"));
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return -1; /* errno now setup with error */
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}
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/* look for an empty connection entry */
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for (idx = 0; idx < conn_list_cnt; idx++) {
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if (!conn_list[idx].in_use)
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break; /* an empty one found */
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}
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if (idx >= conn_list_cnt) { /* no empties, create space */
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CONN_LIST* tmp_conn_list = conn_list;
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conn_list_cnt += CONN_LIST_INC;
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if (conn_list) {
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conn_list = (CONN_LIST *) Realloc (conn_list, /* extend */
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conn_list_cnt * sizeof (CONN_LIST));
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} else {
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conn_list = (CONN_LIST *)Malloc(conn_list_cnt * sizeof(CONN_LIST));
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}
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if (!conn_list) { /* unable to get space */
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if ((conn_list_cnt -= CONN_LIST_INC)) {
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/* was realloc, restore space */
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conn_list = tmp_conn_list;
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}
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return -1; /* errno set by failed alloc */
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}
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/* clear newly created memory */
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memset (conn_list + idx, 0, CONN_LIST_INC * sizeof (CONN_LIST));
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} else { /* clear new entry */
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memset (conn_list + idx, 0, sizeof (CONN_LIST));
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}
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clst = conn_list + idx;
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clst->in_use = True; /* now in use */
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clst->sender = sender;
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memcpy (&clst->back_port, &in->back_port, sizeof (NET_OPAQUE));
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memcpy (&clst->route, &in->destination, sizeof (NET_OPAQUE));
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clst->debug_type = (UCHAR) in->debug_type;
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clst->flags = in->flags;
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strncpy (clst->user_name, in->user_name, NAMEMAX-1);
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clst->user_name [NAMEMAX-1] = 0;
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return idx;
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}
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/*
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* ConnDelete - remove connection entry when shutdown.
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*
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*/
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void
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ConnDelete (int conn, struct svc_req* rqstp, close_control control)
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{
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CONN_LIST* clst = conn_list + conn;
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int idx;
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Boolean prim;
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if (! clst->in_use) return; /* not active */
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for (idx = 0; idx < pid_list_cnt; idx++) {
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PID_LIST* plst = pid_list + idx;
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if (! PIDMAP_TEST (conn, idx)) continue;
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/* found a controlled pid */
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prim = (plst->primary_conn == conn) ? True : False;
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TgtDetachCon (conn, idx, True);
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/* if still running or alive, we use close control on it */
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if (! plst->pid)
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continue; /* entry gone */
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if (prim && control == CLOSE_KILL) {
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/* kill off process */
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TgtKillAndDelete (plst, rqstp, True);
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} else if (! plst->owners) {
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/* no owners left */
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if (control == CLOSE_DETACH) {
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TgtKillAndDelete (plst, rqstp, False);
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}
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if (control == CLOSE_DETACH || PROC_TERMINATED (plst)) {
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TgtDelete (plst, conn, (control==CLOSE_DETACH) ?
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BMSG_DETACH : 0);
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}
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}
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}
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if (clst->list) {
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Free (clst->list); /* free allocated memory */
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}
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DPRINTF (("ConnDelete: Connection closed for port %u\n",
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HL_W(*((UINT16*) &clst->back_port.c[2]))));
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clst->in_use = False; /* free it back */
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}
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