main.c
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/*
* main.c: driver daemon startup.
*
* Copyright 1995, Silicon Graphics, Inc.
* All Rights Reserved.
*
* This is UNPUBLISHED PROPRIETARY SOURCE CODE of Silicon Graphics, Inc.;
* the contents of this file may not be disclosed to third parties, copied or
* duplicated in any form, in whole or in part, without the prior written
* permission of Silicon Graphics, Inc.
*
* RESTRICTED RIGHTS LEGEND:
* Use, duplication or disclosure by the Government is subject to restrictions
* as set forth in subdivision (c)(1)(ii) of the Rights in Technical Data
* and Computer Software clause at DFARS 252.227-7013, and/or in similar or
* successor clauses in the FAR, DOD or NASA FAR Supplement. Unpublished -
* rights reserved under the Copyright Laws of the United States.
*
* $Revision: 1.1.1.1 $
*/
#include <sys/file.h>
#include <sys/types.h>
#include <fcntl.h>
#include <stdlib.h>
#include <stdio.h>
#include <unistd.h>
#include <signal.h>
#include <bstring.h>
#include <string.h>
#include "driverd.h"
#include "utils.h"
#define DEFAULT_TIMEOUT 60 /* seconds */
static void RunOnce(void);
ClientPtr *clients;
ClientPtr serverClient;
extern int currentMaxClients; /* current size of clients array */
extern long MaxClients;
char *daemon = "0";
int verbose_flag = 0;
void
ErrorF(char *s) {
fprintf(stderr, "Driverd: %s", s);
}
void
FatalError(char *s) {
fprintf(stderr, "Driverd: %s", s);
exit(1);
}
void
Trace(char *s) {
if (verbose_flag)
fprintf(stderr, "Driverd Trace: %s", s);
}
/*
* Check to see if the driver daemon is already running; if not, lock the
* executable.
*/
static void
RunOnce()
{
char driverdfile[64];
int fd, ret;
sprintf(driverdfile, "%s/usr/etc/driverd", getenv("ROOT"));
fd = open(driverdfile, O_RDONLY);
if (fd == -1)
return;
ret = flock(fd, LOCK_EX|LOCK_NB);
if (ret == -1)
FatalError("driverd is already running\n");
}
main(int argc, char *argv[])
{
int i;
if (argc != 1)
verbose_flag = 1;
/*
* important - don't leave core files in /, which is where we start
* with inetd;
*/
if (getuid() == 0)
chdir("/usr/tmp");
RunOnce();
CreateWellKnownSockets();
clients = (ClientPtr *)malloc(MAXCLIENTS * sizeof(ClientPtr));
if (!clients)
FatalError("couldn't create client pointer array");
for (i = 0; i < MAXCLIENTS; i++) {
clients[i] = NULL;
}
Dispatch();
/*
* We should never return from Dispatch...
*/
exit(0);
}