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solaris-dev.c
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/*
*
* Copyright (C) portshare Corporation, 1999-1999. All rights reserved.
*
*
* dev.c
* Unix Pty Device routines
*
* History
* 12/22/1999 V.1.0.0 Initial revision
*
*/
/* Open / stat includes */
# include <sys/types.h>
# include <sys/stat.h>
# include <fcntl.h>
# include <unistd.h>
/* Errno */
# include <stdio.h>
# include <errno.h>
# include <string.h>
/* ptsname */
# include <stdlib.h>
/* Termio */
# ifdef USE_TERMIO
# include <termio.h>
# endif
/* Termios */
# ifdef USE_TERMIOS
# include <termios.h>
# endif
/* STREAMS ioctl */
# include <stropts.h>
# include <sys/stream.h>
/* Get process group id of controlling pty */
# include <dirent.h>
/* Signalling slave (kill) */
# include <signal.h>
# define _TSR_DEV_
#include "inc/portshare-ser-cli.h"
#include "inc/system.h"
#include "inc/tsrio.h"
#include "inc/telnet.h"
#include "inc/dev.h"
#include "inc/misc.h"
#include "inc/port_speed.h"
#ifdef TSR_MEASURE
#include "inc/tsrmeasure.h"
#endif
#ifndef TIOCPKT_DATA
#define TIOCPKT_DATA 0
#endif
#ifndef TIOCPKT_FLUSHREAD
#define TIOCPKT_FLUSHREAD 1
#endif
#ifndef TIOCPKT_FLUSHWRITE
#define TIOCPKT_FLUSHWRITE 2
#endif
/*
* Argh => Get the process group id associated with slave pty
*/
int get_slave_controlling(dev_t device);
/*
* Streams message routines
*/
void parse_message(unsigned char type, char *buf, int size);
void parse_packet(int type);
void parse_msgflush(int queues);
/*
* Termio / Termios routines
*/
void parse_ioctl(int ioctype, void *iocdata);
void parse_break(int *interval);
void parse_iocflush(int *queues);
void parse_termios(int mode, struct termios *tp);
int termios_to_portmodes(struct termios *tp);
void termios_to_portconfig(struct termios *tp, struct portconfig *pcp);
void portconfig_to_termios(struct portconfig *pcp, struct termios *tp);
# ifdef USE_TERMIO
void parse_termio(int mode, struct termio *tp);
int termio_to_portmodes(struct termio *tp);
void termio_to_portconfig(struct termio *tp, struct portconfig *pcp);
#endif
/*
* Debug routines
*/
void print_msg(int type, unsigned char *buf, int size);
char *ioctl_name(int type, void *arg);
/*
* Internal Variables
*/
char P_sname[NAMESIZE];
dev_t P_devnumber;
char Databuf[DEV_MAXIOSZ];
static struct strpeek Message;
int Lasttype;
char Ctlbuf[16], Databuf[DEV_MAXIOSZ];
int
dev_getaddr(char *dname)
{
int fd = -1;
int slave_fd;
int mode;
char *pts;
struct stat statb;
if (lstat(dname, &statb) >= 0) { /* File exists */
if (S_ISLNK(statb.st_mode)) {
sysmessage(MSG_WARNING, "Removing old sym-link \"%s\".\n", dname);
unlink(dname);
}
else if (!S_ISCHR(statb.st_mode)) {
sysmessage(MSG_ERR, "%s already exists\n", dname);
return (E_PARMINVAL);
}
}
else if (errno != ENOENT) { /* generic stat error */
sysmessage(MSG_ERR, "Can't lstat %s : %s\n", dname, strerror(errno));
return (E_FILEIO);
}
mode = O_RDWR;
# ifdef USE_POSIX_NONBLOCK
mode |= O_NONBLOCK;
# elif defined USE_STD_NDELAY
mode |= O_NDELAY;
# endif
/*
* Warning: most PTY implementation puts master side as controlling terminal if
* O_NOCTTY is not set !!!
*/
fd = open("/dev/ptmx", mode | O_NOCTTY);
if (fd < 0) {
sysmessage(MSG_ERR, "/dev/ptmx: %s", strerror(errno));
return (E_FILEIO);
}
if (ioctl(fd, I_PUSH, "pckt") == -1) {
sysmessage(MSG_ERR, "Can't push module: %s\n", strerror(errno));
close(fd);
return E_FILEIO;
}
if (grantpt(fd) < 0) {
sysmessage(MSG_WARNING, "grantpt failed: %s\n", strerror(errno));
return (E_FILEIO);
}
if (unlockpt(fd) < 0) {
sysmessage(MSG_ERR, "unlockpt: %s", strerror(errno));
return (E_FILEIO);
}
if ((pts = ptsname(fd)) == NULL) {
sysmessage(MSG_ERR, "Slave pty could not be obtained");
return (E_FILEIO);
}
/* Open the slave side. */
if ((slave_fd = open(pts, O_RDWR | O_NOCTTY)) < 0) {
sysmessage(MSG_ERR, "Could not open slave: %s", strerror(errno));
close(slave_fd);
return 0;
}
# ifdef USE_FIONBIO
mode = 1;
if (ioctl(fd, FIONBIO, &mode) == -1) {
sysmessage(MSG_ERR, "Can't set non-block on master pty : %s\n",
strerror(errno));
close(fd);
return (E_FILEIO);
}
# endif
if (lstat(pts, &statb) == -1) { /* File does not exists */
sysmessage(MSG_ERR, "Can't stat slave pty: %s\n", strerror(errno));
close(fd);
return (E_FILEIO);
}
P_devnumber = statb.st_rdev;
if (symlink(pts, dname) == -1) {
sysmessage(MSG_ERR, "Can't link dev : %s\n", strerror(errno));
return (E_FILEIO);
}
else {
sysmessage(MSG_NOTICE, "Using %s pseudo-tty\n", pts);
}
P_mfd = fd;
strcpy(P_sname, pts);
strcpy(P_devname, dname);
return (E_NORMAL);
}
void
dev_free(void)
{
(void) close(P_sfd);
P_sfd = -1;
return;
}
int
dev_init(int iosize, int devmodem, int closemode, struct buffer *ibp,
struct buffer *obp, struct comport *cp)
{
Pty.portmodes = 0;
if (devmodem == DEV_LOCAL) {
Pty.portmodes = PORT_CLOCAL;
}
if (closemode == CLOSE_HANG) {
Pty.portmodes |= PORT_HUPCL;
}
Pty.portmodes |= PORT_IGNBRK | PORT_IGNPAR;
Pty.iosize = iosize;
Pty.inbuff = ibp;
Pty.outbuff = obp;
Pty.comport = cp;
return (E_NORMAL);
}
int
find_load(int fd, const char *name)
{
int ret;
ret = ioctl(fd, I_FIND, name);
if (ret == -1) {
sysmessage(MSG_ERR, "Can't check %s: %s\n", name, strerror(errno));
return 1;
}
if (ret == 0) {
if (ioctl(fd, I_PUSH, name) == -1) {
sysmessage(MSG_ERR, "Can't push %s: %s\n", name, strerror(errno));
return 1;
}
}
return 0;
}
int
dev_config(void)
{
int sfd;
struct termios tios;
struct portconfig *pcp = &Pty.comport->portconfig;
int modes = Pty.portmodes;
struct strbuf *ctlmsg = &Message.ctlbuf;
struct strbuf *datamsg = &Message.databuf;
int flags = 0;
sysmessage(MSG_NOTICE, "Opening %s pseudo-tty\n", P_sname);
if ((sfd = open(P_sname, O_RDWR | O_NOCTTY)) == -1) {
sysmessage(MSG_ERR, "Can't open slave device : %s\n",
strerror(errno));
return (E_FILEIO);
}
if (find_load(sfd, "ptem") || find_load(sfd, "ldterm")) {
close(sfd);
return E_FILEIO;
}
memset((void *) &tios, 0, sizeof(struct termios));
portconfig_to_termios(pcp, &tios);
tios.c_cflag |= CREAD;
tios.c_lflag |= NOFLSH;
/* PTY modes */
if (modes & PORT_HUPCL)
tios.c_cflag |= HUPCL;
if (modes & PORT_CLOCAL)
tios.c_cflag |= CLOCAL;
if (modes & PORT_IGNBRK)
tios.c_iflag |= IGNBRK;
if (modes & PORT_IGNPAR)
tios.c_iflag |= IGNPAR;
tios.c_cc[VMIN] = 1;
if (tcsetattr(sfd, TCSANOW, &tios) == -1) {
sysmessage(MSG_ERR, "Can't set termios : %s\n", strerror(errno));
(void) close(sfd);
return (E_FILEIO);
}
P_sfd = sfd;
ctlmsg->buf = Ctlbuf;
ctlmsg->maxlen = 16;
datamsg->buf = Databuf;
datamsg->maxlen = Pty.iosize;
(void) getmsg(P_mfd, ctlmsg, datamsg, &flags);
if (Debug > 2) {
sysmessage(MSG_DEBUG,
" CFG: Ctl: %d bytes, Type: %d, Data: %d bytes, flags: %08X\n",
ctlmsg->len, Ctlbuf[ctlmsg->len > 0 ? ctlmsg->len - 1 : 0],
datamsg->len, flags);
}
return (E_NORMAL);
}
int
dev_closeslave(void)
{
if (Pty.state == PTY_OPER && P_sfd != -1) {
if (Debug > 1) {
sysmessage(MSG_DEBUG, "Closing %s pseudo-tty \n", P_sname);
}
sysmessage(MSG_NOTICE, "Closing %s pseudo-tty \n", P_sname);
(void) close(P_sfd);
P_sfd = -1;
}
return (E_NORMAL);
}
unsigned char Holdbuf[4];
int Hold = FALSE;
#if 0
int
dev_probe(void)
{
int retc;
int retmsg;
unsigned char type;
struct strbuf *ctlmsg = &Message.ctlbuf;
struct strbuf *datamsg = &Message.databuf;
struct iocblk *iocp;
int ioctype;
unsigned char *iocdata;
#if 0
if ((retc = read(P_mfd, Holdbuf, 1)) == -1) {
if (errno == EIO) { /* PTY WAS CLOSED */
retc = 0;
}
else {
sysmessage(MSG_ERR,
"Can't read from master pty: %s\n", strerror(errno));
return (retc);
}
}
if (Debug > 2) {
sysmessage(MSG_DEBUG, "PROBE: %d bytes: %d", retc, Holdbuf[0]);
}
if (retc != 0) {
type = Holdbuf[0];
if (type == TIOCPKT_DATA) {
retmsg = PROBE_DATA;
}
else if (type & (TIOCPKT_FLUSHREAD | TIOCPKT_FLUSHWRITE)) {
retmsg = PROBE_FLUSH;
}
else {
retmsg = PROBE_GENERIC;
}
Hold = TRUE;
}
else {
retmsg = PROBE_EOF;
}
if (Debug > 1) {
sysmessage(MSG_DEBUG, "PROBE: msg %d\n", retmsg);
}
#endif
ctlmsg->buf = Ctlbuf;
ctlmsg->maxlen = 16;
datamsg->buf = Databuf;
datamsg->maxlen = Pty.iosize;
Message.flags = 0;
if ((retc = ioctl(P_mfd, I_PEEK, (void *) &Message)) == -1) {
sysmessage(MSG_ERR,
"Can't get a message from master pty: %s\n",
strerror(errno));
return (retc);
}
ctllen = ctlmsg->len;
datalen = datamsg->len;
if (ctllen == 1) {
type = GET_VALUE_1(&ctlmsg->buf[0]);
}
else {
sysmessage(MSG_ERR,
"PROBE: Undesired control message size: %d\n", ctllen);
return;
}
if (Debug > 2) {
sysmessage(MSG_DEBUG,
"PROBE: Ctl: %d bytes, Type: %d, Data: %d bytes, flags: %08X\n",
ctllen, type, datalen, Message.flags);
}
if (Debug > 2) {
int i;
char debbuf[128];
char oct[8];
sprintf(debbuf, "CTL: ");
for (i = 0; i < ctllen && i < 8; i++) {
sprintf(oct, "%02X ", (unsigned char) ctlmsg->buf[i]);
strcat(debbuf, oct);
}
sysmessage(MSG_DEBUG, "%s\n", debbuf);
sprintf(debbuf, "DAT: ");
for (i = 0; i < datalen && i < 8; i++) {
sprintf(oct, "%02X ", (unsigned char) datamsg->buf[i]);
strcat(debbuf, oct);
}
sysmessage(MSG_DEBUG, "%s\n", debbuf);
}
if (datalen == -1) {
sysmessage(MSG_ERR,
"PROBE: Undesired data message size: %d\n", datalen);
return;
}
switch (type) {
case M_DATA:
if (datalen > 0) {
retmsg = PROBE_DATA; /* M_DATA > 0 */
}
else {
retmsg = PROBE_EOF; /* M_DATA == 0 */
}
break;
case M_FLUSH:
retmsg = PROBE_FLUSH; /* M_FLUSH */
break;
case M_IOCTL:
retmsg = PROBE_GENERIC; /* Generic M_IOCTL */
iocp = (struct iocblk *) &datamsg->buf[0];
ioctype = iocp->ioc_cmd;
iocdata = (unsigned char *) iocp + sizeof(struct iocblk);
switch (ioctype) {
# ifdef USE_TERMIO
case TCSETA:
case TCSETAW:
case TCSETAF:
tio = (struct termio *) iocdata;
if (tio->c_cflag & CLOCAL) {
retmsg = PROBE_CLOCAL; /* CLOCAL ON */
}
break;
# endif
case TCSETS:
case TCSETSW:
case TCSETSF:
tios = (struct termios *) iocdata;
if (tios->c_cflag & CLOCAL) {
retmsg = PROBE_CLOCAL; /* CLOCAL ON */
}
break;
default:
break;
}
}
if (Debug > 1) {
sysmessage(MSG_DEBUG, "PROBE: msg %d\n", retmsg);
}
return (retmsg);
}
int
dev_getdata(void)
{
int retc;
int size;
unsigned char type;
struct strbuf *ctlmsg = &Message.ctlbuf;
struct strbuf *datamsg = &Message.databuf;
size = Pty.iosize;
if (Hold == TRUE) {
Hold = FALSE;
retc = 1;
Databuf[0] = Holdbuf[0];
}
else {
if ((retc = read(P_mfd, Databuf, size)) == -1) {
if (errno == EIO) { /* PTY WAS CLOSED */
retc = 0;
}
else {
sysmessage(MSG_ERR,
"Can't read from master pty: %s\n",
strerror(errno));
# ifdef TSR_MEASURE
devnreads++;
# endif
return (retc);
}
}
}
if (Debug > 2) {
int i;
char debbuf[128];
char oct[8];
sprintf(debbuf, "DATA: ");
for (i = 0; i < retc && i < 8; i++) {
sprintf(oct, "%02X ", (unsigned char) Databuf[i]);
strcat(debbuf, oct);
}
sysmessage(MSG_DEBUG, "From User: %d bytes: %s\n", retc, debbuf);
}
type = Databuf[0];
parse_message(type, Databuf, retc);
return (0);
}
#endif
int
dev_probe(void)
{
int ctllen, datalen;
int retc;
int clocal = 0;
int retmsg;
int type;
struct strbuf *ctlmsg = &Message.ctlbuf;
struct strbuf *datamsg = &Message.databuf;
struct iocblk *iocp;
int ioctype;
unsigned char *iocdata;
struct termio *tio;
struct termios *tios;
ctlmsg->buf = Ctlbuf;
ctlmsg->maxlen = 16;
datamsg->buf = Databuf;
datamsg->maxlen = Pty.iosize;
Message.flags = 0;
if ((retc = ioctl(P_mfd, I_PEEK, (void *) &Message)) == -1) {
sysmessage(MSG_ERR,
"Can't get a message from master pty: %s\n",
strerror(errno));
return (retc);
}
ctllen = ctlmsg->len;
datalen = datamsg->len;
if (ctllen == 1) {
type = GET_VALUE_1(&ctlmsg->buf[0]);
}
else {
sysmessage(MSG_ERR,
"PROBE: Undesired control message size: %d\n", ctllen);
return;
}
if (Debug > 2) {
sysmessage(MSG_DEBUG,
"PROBE: Ctl: %d bytes, Type: %d, Data: %d bytes, flags: %08X\n",
ctllen, type, datalen, Message.flags);
}
if (Debug > 2) {
int i;
char debbuf[128];
char oct[8];
sprintf(debbuf, "CTL: ");
for (i = 0; i < ctllen && i < 8; i++) {
sprintf(oct, "%02X ", (unsigned char) ctlmsg->buf[i]);
strcat(debbuf, oct);
}
sysmessage(MSG_DEBUG, "%s\n", debbuf);
sprintf(debbuf, "DAT: ");
for (i = 0; i < datalen && i < 8; i++) {
sprintf(oct, "%02X ", (unsigned char) datamsg->buf[i]);
strcat(debbuf, oct);
}
sysmessage(MSG_DEBUG, "%s\n", debbuf);
}
if (datalen == -1) {
sysmessage(MSG_ERR,
"PROBE: Undesired data message size: %d\n", datalen);
return;
}
switch (type) {
case M_DATA:
if (datalen > 0) {
retmsg = PROBE_DATA; /* M_DATA > 0 */
}
else {
retmsg = PROBE_EOF; /* M_DATA == 0 */
}
break;
case M_FLUSH:
retmsg = PROBE_FLUSH; /* M_FLUSH */
break;
case M_IOCTL:
retmsg = PROBE_GENERIC; /* Generic M_IOCTL */
iocp = (struct iocblk *) &datamsg->buf[0];
ioctype = iocp->ioc_cmd;
iocdata = (unsigned char *) iocp + sizeof(struct iocblk);
switch (ioctype) {
# ifdef USE_TERMIO
case TCSETA:
case TCSETAW:
case TCSETAF:
tio = (struct termio *) iocdata;
if (tio->c_cflag & CLOCAL) {
retmsg = PROBE_CLOCAL; /* CLOCAL ON */
}
break;
# endif
case TCSETS:
case TCSETSW:
case TCSETSF:
tios = (struct termios *) iocdata;
if (tios->c_cflag & CLOCAL) {
retmsg = PROBE_CLOCAL; /* CLOCAL ON */
}
break;
default:
break;
}
}
if (Debug > 1) {
sysmessage(MSG_DEBUG, "PROBE: msg %d\n", retmsg);
}
return (retmsg);
}
int
dev_getdata(void)
{
int ctllen, datalen;
int retc;
int flags = 0;
struct strbuf *ctlmsg = &Message.ctlbuf;
struct strbuf *datamsg = &Message.databuf;
unsigned char type;
ctlmsg->buf = Ctlbuf;
ctlmsg->maxlen = 16;
datamsg->buf = Databuf;
datamsg->maxlen = Pty.iosize;
if ((retc = getmsg(P_mfd, ctlmsg, datamsg, &flags)) == -1) {
sysmessage(MSG_ERR,
"Can't get a message from master pty: %s\n",
strerror(errno));
# ifdef TSR_MEASURE
devnreads++;
# endif
return (retc);
}
ctllen = ctlmsg->len;
datalen = datamsg->len;
if (ctllen == -1) {
type = Lasttype;
}
else if (ctllen == 1) {
type = GET_VALUE_1(&ctlmsg->buf[0]);
Lasttype = type;
}
else {
sysmessage(MSG_ERR, "Undesired control message size: %d\n", ctllen);
return (-1);
}
if (datalen == -1) {
sysmessage(MSG_ERR,
" DATA: Undesired data message size: %d\n", datalen);
return (-1);
}
if (Debug > 2) {
sysmessage(MSG_DEBUG,
" DATA: Ctl: %d bytes, Type: %d, Data: %d bytes, flags: %08X\n",
ctllen, type, datalen, flags);
}
if (Debug > 2) {
int i;
char debbuf[128];
char oct[8];
sprintf(debbuf, "CTL: ");
for (i = 0; i < ctllen && i < 8; i++) {
sprintf(oct, "%02X ", (unsigned char) ctlmsg->buf[i]);
strcat(debbuf, oct);
}
sysmessage(MSG_DEBUG, "%s\n", debbuf);
sprintf(debbuf, "DAT: ");
for (i = 0; i < datalen && i < 8; i++) {
sprintf(oct, "%02X ", (unsigned char) datamsg->buf[i]);
strcat(debbuf, oct);
}
sysmessage(MSG_DEBUG, "%s\n", debbuf);
}
parse_message(type, datamsg->buf, datalen);
return (0);
}
/*
* Packet mode routines
*/
#if 0
void
parse_message(unsigned char type, char *buf, int size)
{
struct buffer *bp = Pty.inbuff;
if (size != 0) {
switch (Pty.state) {
case PTY_CLOSED:
case PTY_OPERRONLY:
SET_EVENT(EV_UP, EV_UPOPEN, 0, 0);
break;
}
}
else {
SET_EVENT(EV_UP, EV_UPCLOSE, 0, 0);
return;
}
# ifdef TSR_MEASURE
devreads++;
devrbytes += retc;
# endif
if (type == TIOCPKT_DATA) {
if (size == 0) {
SET_EVENT(EV_UP, EV_UPCLOSE, 0, 0);
}
else {
buf++;
size--;
/* V.1.0.1 fix: use buf instead of Dataptr */
COPY_TO_BUFFER(bp, buf, size);
SET_EVENT(EV_UP, EV_UPDATA, 0, 0);
}
}
else {
parse_packet((int) type);
}
}
int
dev_putdata(struct buffer *bp)
{
struct pty *pty = &Pty;
int ret;
int size;
/* XXXX TSR_MEASURES */
while (bp->b_hold) {
size = min(bp->b_hold, pty->iosize);
if ((ret = write(P_mfd, bp->b_rem, size)) == -1) {
if (errno == EAGAIN) {
ret = 0;
}
else {
sysmessage(MSG_ERR,
"Can't write on master pty: %s\n",
strerror(errno));
}
# ifdef TSR_MEASURE
devnwrites++;
# endif
if (Debug > 2) {
int i;
char debbuf[128];
char oct[8];
sprintf(debbuf, "DAT: ");
for (i = 0; i < size && i < 8; i++) {
sprintf(oct, "%02X ", (unsigned char) bp->b_rem[i]);
strcat(debbuf, oct);
}
sysmessage(MSG_DEBUG, "To User: %d bytes: %s\n", size,
debbuf);
}
return (ret);
}
# ifdef TSR_MEASURE
devwrites++;
devwbytes += ret;
# endif
FORWARD_BUFFER(bp, ret);
}
if (bp->b_hold == 0) {
RESET_BUFFER(bp);
}
return (0);
}
#endif
void
parse_message(unsigned char type, char *buf, int size)
{
char *msgt;
int i;
struct iocblk *iocp;
struct buffer *bp = Pty.inbuff;
print_msg(type, (unsigned char *) buf, size);
if (size > 0) {
switch (Pty.state) {
case PTY_CLOSED:
case PTY_OPERRONLY:
SET_EVENT(EV_UP, EV_UPOPEN, 0, 0);
break;
}
}
else if (size == -1) {
sysmessage(MSG_WARNING, "PARSE: Message data size == -1 \n");
return;
}
switch (type) {
case M_DATA:
# ifdef TSR_MEASURE
devreads++;
devrbytes += size;
# endif
if (size == 0) {
SET_EVENT(EV_UP, EV_UPCLOSE, 0, 0);
}
else {
COPY_TO_BUFFER(bp, buf, size);
SET_EVENT(EV_UP, EV_UPDATA, 0, 0);
}
break;
case M_IOCTL:
iocp = (struct iocblk *) &buf[0];
parse_ioctl(iocp->ioc_cmd, (void *) &buf[sizeof(struct iocblk)]);
break;
case M_FLUSH:
parse_msgflush((int) buf[0]);
break;
default:
sysmessage(MSG_NOTICE, "Unsupported stream message: %d\n", type);
print_msg(type, (unsigned char *) buf, size);
break;
}
}
int
dev_putdata(struct buffer *bp)
{
struct pty *pty = &Pty;
int ret;
int size;
int frombuf;
while (bp->b_hold) {
size = min(bp->b_hold, pty->iosize);
if ((ret = write(P_mfd, bp->b_rem, size)) == -1) {
if (errno == EAGAIN) {
ret = 0;
}
else {
sysmessage(MSG_ERR,
"Can't write on master pty: %s\n",
strerror(errno));
}
# ifdef TSR_MEASURE
devnwrites++;
# endif
return (ret);
}
# ifdef TSR_MEASURE
devwrites++;
devwbytes += ret;
# endif
FORWARD_BUFFER(bp, ret);
}
if (bp->b_hold == 0) {
RESET_BUFFER(bp);
}
return (0);
}
void
dev_interrupt(void)
{
int procid;
if ((procid = get_slave_controlling(P_devnumber)) > 0) {
(void) kill((pid_t) - procid, SIGINT);
}
}
void
dev_hangup(void)
{
int procid;
if ((procid = get_slave_controlling(P_devnumber)) > 0) {
(void) kill((pid_t) - procid, SIGHUP);
}
}
void
parse_packet(int type)
{
int flushbits;
int flushmode;
flushbits = type & (TIOCPKT_FLUSHREAD | TIOCPKT_FLUSHWRITE);
if (flushbits) {
switch (flushbits) {
case TIOCPKT_FLUSHREAD:
flushmode = OPFLUSH_IN;
break;