static
int
accepter(void *x)
{
struct gdbcontext *ctx;
struct sockaddr_storage sa;
socklen_t salen;
int remotefd;
(void)x; /* not used */
salen = sizeof(sa);
remotefd = accept(g_listenfd, (struct sockaddr *)&sa, &salen);
if (remotefd < 0) {
/* :-? */
return 0;
}
if (g_ctx_inuse) {
/*
* Hardcode the checksum; the code for sending these things
* is file-static in gdb_be.c. :-|
*
* It doesn't appear to make much difference if we
* send anything anyway.
*/
const char *errmsg = "$E99#b7";
write(remotefd, errmsg, strlen(errmsg));
close(remotefd);
return 0;
}
g_ctx_inuse = 1;
ctx = &g_ctx;
msg("New debugger connection");
ctx->myfd = remotefd;
ctx->bufptr = 0;
onselect(remotefd, ctx, gdb_receive, gdb_cleanup);
main_stop();
return 0;
}
static
void
common_init(int sfd)
{
if (sfd == -1) {
msg("Could not bind debug socket; debugging disabled");
return;
}
if (listen(sfd, 1) < 0) {
msg("listen: %s", strerror(errno));
msg("Could not set up debug socket; debugging disabled");
close(sfd);
return;
}
g_listenfd = sfd;
onselect(sfd, NULL, accepter, NULL);
}
void GUICONTROL::OnSelect() const
{
onselect();
}
static
void *
net_init(int slot, int argc, char *argv[])
{
struct net_data *nd = domalloc(sizeof(struct net_data));
const char *hubname = ".sockets/hub";
u_int16_t hwaddr = HUB_ADDR;
char cwd[PATH_MAX];
int len;
struct sockaddr_un mysun;
socklen_t mylen;
int i, one=1;
for (i=1; i<argc; i++) {
if (!strncmp(argv[i], "hub=", 4)) {
hubname = argv[i]+4;
}
else if (!strncmp(argv[i], "hwaddr=", 7)) {
hwaddr = atoi(argv[i]+7);
}
else {
msg("nic: slot %d: invalid option %s", slot, argv[i]);
die();
}
}
if (hwaddr == BROADCAST_ADDR || hwaddr == HUB_ADDR) {
msg("nic: slot %d: invalid hwaddr or hwaddr not set", slot);
die();
}
if (getcwd(cwd, sizeof(cwd))==NULL) {
msg("nic: slot %d: getcwd: %s", slot, strerror(errno));
die();
}
nd->nd_slot = slot;
nd->nd_status = ND_STATUS(hwaddr, 0);
nd->nd_socket = socket(AF_UNIX, SOCK_DGRAM, 0);
if (nd->nd_socket < 0) {
msg("nic: slot %d: socket: %s", slot, strerror(errno));
die();
}
nd->nd_lostcarrier = 1;
nd->nd_rbuf = domalloc(NET_BUFSIZE);
nd->nd_wbuf = domalloc(NET_BUFSIZE);
memset(&mysun, 0, sizeof(mysun));
mysun.sun_family = AF_UNIX;
len = snprintf(mysun.sun_path, sizeof(mysun.sun_path),
"%s/.sockets/net-%04x", cwd, hwaddr);
if (len < 0 || len >= (int) sizeof(mysun.sun_path)) {
msg("nic: slot %d: current directory %s too long", slot, cwd);
die();
}
mylen = SUN_LEN(&mysun);
#ifdef HAS_SUN_LEN
mysun.sun_len = mylen;
#endif
unlink(mysun.sun_path);
setsockopt(nd->nd_socket, SOL_SOCKET, SO_REUSEADDR,
(void *)&one, sizeof(one));
if (bind(nd->nd_socket, (struct sockaddr *)&mysun, mylen)<0) {
msg("nic: slot %d: bind: %s", slot, strerror(errno));
die();
}
memset(&nd->nd_hubaddr, 0, sizeof(nd->nd_hubaddr));
nd->nd_hubaddr.sun_family = AF_UNIX;
strcpy(nd->nd_hubaddr.sun_path, hubname);
nd->nd_hubaddrlen = SUN_LEN(&nd->nd_hubaddr);
#ifdef HAS_SUN_LEN
nd->nd_hubaddr.sun_len = nd->nd_hubaddrlen;
#endif
onselect(nd->nd_socket, nd, dorecv, NULL);
keepalive(nd, 0);
return nd;
}
