/*-
*-----------------------------------------------------------------------
* Avail_Send --
* Send the availability of the local host.
*
* Results:
* None.
*
* Side Effects:
* An availability packet is sent to the master.
*
*-----------------------------------------------------------------------
*/
Boolean
Avail_Send ()
{
Avail avail;
static int sending = 0; /* XXX: A kludge to prevent endless
* recursion. At times, for no reason I've
* been able to determine, the avail event
* will be triggered during the call to
* CUSTOMS_AVAIL (hard to believe since
* the timeout for the avail event is
* twice as long as the total for the
* rpc, but...). Once it starts, it
* continues and the calls never seem to
* complete. To prevent this, we use a
* static flag and don't send anything
* if a call is already being sent. */
if (sending) {
return(FALSE);
} else {
sending = 1;
}
avail.addr = localAddr.sin_addr;
avail.interval = availInterval;
avail.avail = Avail_Local(AVAIL_EVERYTHING, &avail.rating);
if (verbose) {
printf ("Localhost %s available\n", avail.avail ? "not" : "is");
fflush(stdout);
}
if (!Elect_InProgress() &&
(Rpc_Call(udpSocket, &masterAddr, (Rpc_Proc)CUSTOMS_AVAIL,
sizeof(avail), (Rpc_Opaque)&avail,
0, (Rpc_Opaque)0,
CUSTOMSINT_NRETRY, &retryTimeOut) != RPC_SUCCESS)) {
Elect_GetMaster();
}
sending = 0;
return (FALSE);
}
int
start_remote_job (char **argv, char **envp, int stdin_fd,
int *is_remote, int *id_ptr, int *used_stdin)
{
char waybill[MAX_DATA_SIZE], msg[128];
struct hostent *host;
struct timeval timeout;
struct sockaddr_in sin;
int len;
int retsock, retport, sock;
Rpc_Stat status;
int pid;
/* Create the return socket. */
retsock = Rpc_UdpCreate (True, 0);
if (retsock < 0)
{
error (NILF, "exporting: Couldn't create return socket.");
return 1;
}
/* Get the return socket's port number. */
len = sizeof (sin);
if (getsockname (retsock, (struct sockaddr *) &sin, &len) < 0)
{
(void) close (retsock);
perror_with_name ("exporting: ", "getsockname");
return 1;
}
retport = sin.sin_port;
/* Create the TCP socket for talking to the remote child. */
sock = Rpc_TcpCreate (False, 0);
/* Create a WayBill to give to the server. */
len = Customs_MakeWayBill (&permit, normalized_cwd, argv[0], argv,
envp, retport, waybill);
/* Modify the waybill as if the remote child had done 'child_access ()'. */
{
WayBill *wb = (WayBill *) waybill;
wb->ruid = wb->euid;
wb->rgid = wb->egid;
}
/* Send the request to the server, timing out in 20 seconds. */
timeout.tv_usec = 0;
timeout.tv_sec = 20;
sin.sin_family = AF_INET;
sin.sin_port = htons (Customs_Port ());
sin.sin_addr = permit.addr;
status = Rpc_Call (sock, &sin, (Rpc_Proc) CUSTOMS_IMPORT,
len, (Rpc_Opaque) waybill,
sizeof(msg), (Rpc_Opaque) msg,
1, &timeout);
host = gethostbyaddr((char *)&permit.addr, sizeof(permit.addr), AF_INET);
if (status != RPC_SUCCESS)
{
(void) close (retsock);
(void) close (sock);
error (NILF, "exporting to %s: %s",
host ? host->h_name : inet_ntoa (permit.addr),
Rpc_ErrorMessage (status));
return 1;
}
else if (msg[0] != 'O' || msg[1] != 'k' || msg[2] != '\0')
{
(void) close (retsock);
(void) close (sock);
error (NILF, "exporting to %s: %s",
host ? host->h_name : inet_ntoa (permit.addr),
msg);
return 1;
}
else
{
error (NILF, "*** exported to %s (id %u)",
host ? host->h_name : inet_ntoa (permit.addr),
permit.id);
}
fflush (stdout);
fflush (stderr);
pid = vfork ();
if (pid < 0)
{
/* The fork failed! */
perror_with_name ("vfork", "");
return 1;
}
else if (pid == 0)
{
/* Child side. Run 'export' to handle the connection. */
static char sock_buf[20], retsock_buf[20], id_buf[20];
static char *new_argv[6] =
{ EXPORT_COMMAND, "-id", sock_buf, retsock_buf, id_buf, 0 };
/* Set up the arguments. */
(void) sprintf (sock_buf, "%d", sock);
(void) sprintf (retsock_buf, "%d", retsock);
(void) sprintf (id_buf, "%x", permit.id);
/* Get the right stdin. */
if (stdin_fd != 0)
(void) dup2 (stdin_fd, 0);
/* Unblock signals in the child. */
unblock_sigs ();
/* Run the command. */
exec_command (new_argv, envp);
}
/* Parent side. Return the 'export' process's ID. */
(void) close (retsock);
(void) close (sock);
*is_remote = 0;
*id_ptr = pid;
*used_stdin = 1;
return 0;
}
