source: rtems/c/src/librdbg/src/servcon.c @ df49c60

4.104.114.84.95
Last change on this file since df49c60 was 981b99f, checked in by Joel Sherrill <joel.sherrill@…>, on Aug 10, 1999 at 4:41:44 PM

Patch from Eric Valette <valette@…> and Emmanuel Raguet
<raguet@…>:

  • the dec21140 driver code has been hardened (various bug fixed) Emmanuel,
  • bug in the mcp750 init code have been fixed (interrupt stack/initial stack initialization), BSS correctly cleared (Eric V)
  • remote debugging over TCP/IP is nearly complete (berakpoints, backtrace, variables,...) (Eric V),
  • exception handling code has also been improved in order to fully support RDBG requirements (Eric V),
  • Property mode set to 100644
File size: 3.7 KB
Line 
1/*
2 **************************************************************************
3 *
4 *  Component:  RDBG
5 *  Module:     servcon.c
6 *
7 *  Synopsis:   Management of RPC client connections.
8 *
9 * $Id$
10 *
11 **************************************************************************
12 */
13
14#include <sys/errno.h> 
15#include <rdbg/rdbg.h>          
16#include <rdbg/servrpc.h>      
17 
18    /*
19     *  ConnCreate - create a new connection entry for a client.
20     *
21     *  This function finds an empty entry in the connection array
22     *  or makes space. It fills in the fields that are passed to it.
23     *  It does not do any validation on net addresses nor does it
24     *  start a validation cycle on other clients. This is done by
25     *  the caller.
26     */
27
28    int
29ConnCreate (struct svc_req* rqstp, open_in* in)
30{
31    NET_OPAQUE  sender;
32    int         idx;
33    CONN_LIST*  clst;
34   
35    setErrno (0);
36
37    /* Convert to valid Net address */
38    if (! TspTranslateRpcAddr (rqstp, &sender)) {
39        DPRINTF (("ConnCreate: TspTranslateRpcAddr failed\n"));
40        return -1;
41    }
42    if (! TspValidateAddr ((NET_OPAQUE*) in->back_port, &sender)) {
43        DPRINTF (("ConnCreate: TspValidateAddr failed\n"));
44        return -1;                      /* errno now setup with error */
45    }
46
47        /* look for an empty connection entry */
48    for (idx = 0; idx < conn_list_cnt; idx++) {
49        if (!conn_list[idx].in_use)
50            break;                      /* an empty one found */
51    }
52
53    if (idx >= conn_list_cnt) {         /* no empties, create space */
54        CONN_LIST*      tmp_conn_list = conn_list;
55
56        conn_list_cnt += CONN_LIST_INC;
57        if (conn_list) {
58            conn_list = (CONN_LIST *) Realloc (conn_list,  /* extend */
59                conn_list_cnt * sizeof (CONN_LIST));
60        } else {
61            conn_list = (CONN_LIST *)Malloc(conn_list_cnt * sizeof(CONN_LIST));
62        }
63
64        if (!conn_list) {               /* unable to get space */
65            if ((conn_list_cnt -= CONN_LIST_INC)) {
66                    /* was realloc, restore space */
67                conn_list = tmp_conn_list;
68            }
69            return -1;          /* errno set by failed alloc */
70        }
71            /* clear newly created memory */
72        memset (conn_list + idx, 0, CONN_LIST_INC * sizeof (CONN_LIST));
73    } else {                    /* clear new entry */
74        memset (conn_list + idx, 0, sizeof (CONN_LIST));
75    }
76    clst = conn_list + idx;
77
78    clst->in_use = True; /* now in use */
79    clst->sender = sender;
80    memcpy (&clst->back_port, &in->back_port, sizeof (NET_OPAQUE));
81    memcpy (&clst->route, &in->destination, sizeof (NET_OPAQUE));
82    clst->debug_type = (UCHAR) in->debug_type;
83    clst->flags = in->flags;
84    strncpy (clst->user_name, in->user_name, NAMEMAX-1);
85    clst->user_name [NAMEMAX-1] = 0;
86
87    return idx;
88}
89
90    /*
91     *  ConnDelete - remove connection entry when shutdown.
92     *
93     */
94
95    void
96ConnDelete (int conn, struct svc_req* rqstp, close_control control)
97{
98    CONN_LIST*  clst = conn_list + conn;
99    int         idx;
100    Boolean     prim;
101
102    if (! clst->in_use) return; /* not active */
103
104    for (idx = 0; idx < pid_list_cnt; idx++) {
105        PID_LIST* plst = pid_list + idx;
106
107        if (! PIDMAP_TEST (conn, idx)) continue;
108
109            /* found a controlled pid */
110        prim = (plst->primary_conn == conn) ? True : False;
111        TgtDetachCon (conn, idx, True);
112
113            /* if still running or alive, we use close control on it */
114        if (! plst->pid)
115            continue;           /* entry gone */
116
117        if (prim && control == CLOSE_KILL) {
118                /* kill off process */
119            TgtKillAndDelete (plst, rqstp, True);
120        } else if (! plst->owners) {
121                /* no owners left */
122            if (control == CLOSE_DETACH) {
123                TgtKillAndDelete (plst, rqstp, False);
124            }
125            if (control == CLOSE_DETACH || PROC_TERMINATED (plst)) {
126                TgtDelete (plst, conn, (control==CLOSE_DETACH) ? 
127                    BMSG_DETACH : 0);
128            }
129        }
130    }
131    if (clst->list) {
132        Free (clst->list);      /* free allocated memory */
133    }
134    DPRINTF (("ConnDelete: Connection closed for port %u\n",
135        HL_W(*((UINT16*) &clst->back_port.c[2]))));
136
137    clst->in_use = False;       /* free it back */
138}
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