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/*
* Copyright (C) 1984 Sun Microsystems, Inc.
* Modified by Jeffrey A. Uphoff, 1995, 1997-1999.
* Modified by Olaf Kirch, 1996.
*
* NSM for Linux.
*/
/*
* Copyright (c) 2009, Sun Microsystems, Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* - Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* - Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* - Neither the name of Sun Microsystems, Inc. nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
/*
* This has been modified for my own evil purposes to prevent deadlocks
* when two hosts start NSM's simultaneously and try to notify each
* other (which mainly occurs during testing), or to stop and smell the
* roses when I have callbacks due.
* --Jeff Uphoff.
*/
/*
* This is the RPC server side idle loop.
* Wait for input, call server program.
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <errno.h>
#include <time.h>
#include "statd.h"
#include "notlist.h"
static int svc_stop = 0;
/*
* This is the global notify list onto which all SM_NOTIFY and CALLBACK
* requests are put.
*/
notify_list * notify = NULL;
/*
* Jump-off function.
*/
void
my_svc_exit(void)
{
svc_stop = 1;
}
/*
* The heart of the server. A crib from libc for the most part...
*/
void
my_svc_run(void)
{
FD_SET_TYPE readfds;
int selret;
time_t now;
svc_stop = 0;
for (;;) {
if (svc_stop)
return;
/* Ah, there are some notifications to be processed */
while (notify && NL_WHEN(notify) <= time(&now)) {
process_notify_list();
}
readfds = SVC_FDSET;
if (notify) {
struct timeval tv;
tv.tv_sec = NL_WHEN(notify) - now;
tv.tv_usec = 0;
xlog(D_GENERAL, "Waiting for reply... (timeo %d)",
tv.tv_sec);
selret = select(FD_SETSIZE, &readfds,
(void *) 0, (void *) 0, &tv);
} else {
xlog(D_GENERAL, "Waiting for client connections");
selret = select(FD_SETSIZE, &readfds,
(void *) 0, (void *) 0, (struct timeval *) 0);
}
switch (selret) {
case -1:
if (errno == EINTR || errno == ECONNREFUSED
|| errno == ENETUNREACH || errno == EHOSTUNREACH)
continue;
xlog(L_ERROR, "my_svc_run() - select: %m");
return;
case 0:
/* A notify/callback timed out. */
continue;
default:
selret -= process_reply(&readfds);
if (selret)
svc_getreqset(&readfds);
}
}
}
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