root/usr/src/cmd/ttymon/tmglobal.c
/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License (the "License").
 * You may not use this file except in compliance with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */
/*
 * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */
/*      Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
/*        All Rights Reserved   */

#include <stdio.h>
#include <poll.h>
#include <signal.h>
#include <sys/resource.h>
#include <sac.h>
#include "tmstruct.h"
#include "ttymon.h"

/*
 *      global fd and fp
 */
FILE    *Logfp = NULL;          /* for log file                 */
int     Lckfd;                  /* for pid file                 */
int     Sfd, Pfd;               /* for sacpipe and pmpipe       */
int     PCpipe[2];              /* pipe between Parent & Children */
#ifdef  DEBUG
FILE    *Debugfp = NULL;        /* for debug file               */
#endif

char    State = PM_STARTING;    /* current state                        */
char    *Istate;                /* initial state                        */
char    *Tag;                   /* port monitor tag                     */
int     Maxfiles;               /* Max number of open files             */
int     Maxfds;                 /* Max no of devices ttymon can monitor */

int     Reread_flag = FALSE;    /* reread pmtab flag                    */

int     Retry;                  /* retry open_device flag               */

struct  pmtab *PMtab = NULL;    /* head pointer to pmtab linked list    */
int     Nentries = 0;           /* # of entries in pmtab linked list    */

struct  Gdef Gdef[MAXDEFS];     /* array to hold entries in /etc/ttydefs */
int     Ndefs = 0;              /* highest index to Gdef that was used   */
long    Mtime = 0;              /* last modification time of ttydefs     */

struct pollfd *Pollp;           /* ptr to an array of poll struct       */
int     Npollfd;                /* size of the pollfd array              */

struct Gdef DEFAULT = {         /* default terminal settings    */
        "default",
        "9600",
        "9600 sane",
        0,
        /*
         * next label is set to 4800 so we can start searching ttydefs.
         * if 4800 is not in ttydefs, we will loop back to use DEFAULT
         */
        "4800"
};

uid_t   Uucp_uid = 5;           /* owner's uid for bi-directional ports */
gid_t   Tty_gid = 7;            /* group id for all tty devices         */

/*
 * Nlocked -    number of ports that are either locked or have active
 *              sessions not under this ttymon.
 */
int     Nlocked = 0;

/* original rlimit value */
struct  rlimit  Rlimit;

/*
 * places to remember original signal dispositions and masks
 */

sigset_t        Origmask;               /* original signal mask */
struct  sigaction       Sigalrm;        /* SIGALRM */
struct  sigaction       Sigcld;         /* SIGCLD */
struct  sigaction       Sigint;         /* SIGINT */
struct  sigaction       Sigpoll;        /* SIGPOLL */
struct  sigaction       Sigquit;        /* SIGQUIT */
struct  sigaction       Sigterm;        /* SIGTERM */
#ifdef  DEBUG
struct  sigaction       Sigusr1;        /* SIGUSR1 */
struct  sigaction       Sigusr2;        /* SIGUSR2 */
#endif

struct strbuf *peek_ptr;

int Logmaxsz = 1000000; /* Log Max Size */

int Splflag = 0; /* serialize Log file manipulation */