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aix-dev.c
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/*
*
* Copyright (C) portshare Corporation, 1999-1999. All rights reserved.
*
*
* dev.c
* Unix Pty Device routines
*
* History
* 08/17/1999 V.1.0.0 Initial revision
*
* 05/09/2002 V.1.0.1
* More debug info on dev_getdata
* Correct handling of large messages (Atacacao)
*/
/* Open / stat includes */
# include <sys/types.h>
# include <sys/stat.h>
# include <fcntl.h>
/* Errno */
# include <stdio.h>
# include <errno.h>
# include <string.h>
/* Termio */
# ifdef USE_TERMIO
# include <termio.h>
# endif
/* Termios */
# ifdef USE_TERMIOS
# include <termios.h>
# endif
/* STREAMS ioctl */
# include <sys/types.h>
# include <stropts.h>
# include <sys/stream.h>
# undef _KERNEL
/* Tiocsignal */
# 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/port_speed.h"
#ifdef TSR_MEASURE
#include "inc/tsrmeasure.h"
#endif
/*
* Packet mode routines
*/
void parse_message(unsigned char type, char *buf, int size);
void parse_packet(int type);
/*
* Termio / Termios routines
*/
void parse_ioctl(int ioctype, void *iocdata);
void parse_termios(int mode, struct termios *tp);
void parse_termio(int mode, struct termio *tp);
void parse_break(int *interval);
void parse_iocflush(int *queues);
int termio_to_portmodes(struct termio *tp);
void termio_to_portconfig(struct termio *tp, struct portconfig *pcp);
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);
/*
* 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];
int Lasttype = -1;
char Ctlbuf[16], Databuf[DEV_MAXIOSZ];
struct strpeek Message;
/*
* STREAMS Pseudo-TTY Device Stuff
*/
# define PTY_DEVICE "/dev/ptc"
int
dev_getaddr(char *dname)
{
int fd;
int mode;
char *stty;
int found;
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 !!!
*/
mode |= O_NOCTTY;
if ((fd = open(PTY_DEVICE, mode)) < 0) {
sysmessage(MSG_ERR, "Can't open ptc : %s\n", strerror(errno));
return (E_FILEIO);
}
# 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
mode = 1;
if (ioctl(fd, TIOCPKT, &mode) == -1) {
sysmessage(MSG_ERR,
"Can't put master pty in packet mode: %s\n",
strerror(errno));
close(fd);
return (E_FILEIO);
}
found = FALSE;
if ((stty = ttyname(fd)) != (char *) NULL) {
if (unlockpt(fd) >= 0) {
if (link(stty, dname) == 0) {
found = TRUE;
sysmessage(MSG_NOTICE, "Using %s pseudo-tty \n", stty);
}
else {
sysmessage(MSG_ERR, "Can't link dev : %s\n", strerror(errno));
}
}
else {
sysmessage(MSG_ERR, "Can't unlock ptc : %s\n", strerror(errno));
}
}
else {
sysmessage(MSG_ERR, "Can't get ptc ttyname\n");
}
if (found == FALSE) {
(void) close(fd);
return (E_FILEIO);
}
P_mfd = fd;
strcpy(P_sname, stty);
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)
{
int ret;
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
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);
}
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;
}
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 = 1;
datamsg->buf = Databuf;
datamsg->maxlen = Pty.iosize;
(void) getmsg(P_mfd, ctlmsg, datamsg, &flags);
return (E_NORMAL);
}
int
dev_closeslave(void)
{
if (Pty.state == PTY_OPER && P_sfd != -1) {
sysmessage(MSG_NOTICE, "Closing %s pseudo-tty \n", P_sname);
(void) close(P_sfd);
P_sfd = -1;
}
return (E_NORMAL);
}
int
dev_probe(void)
{
int ctllen, datalen;
int retc;
int clocal = 0;
int retmsg;
unsigned char 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 = 1;
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 = ctlmsg->buf[0];
}
else if (datalen > 0) {
type = datamsg->buf[0];
}
else {
type = TIOCPKT_DATA;
}
if (Debug > 2) {
sysmessage(MSG_DEBUG,
"PROBE: Ctl: %d bytes, Type: %d, Data: %d bytes, flags: %08X, rt %d\n",
ctllen, type, datalen, Message.flags, retc);
}
retmsg = PROBE_GENERIC;
if (type == TIOCPKT_DATA) {
if (datalen != 0) {
retmsg = PROBE_DATA;
}
else {
retmsg = PROBE_EOF;
}
}
else {
if (type & (TIOCPKT_FLUSHREAD | TIOCPKT_FLUSHWRITE)) {
retmsg = PROBE_FLUSH;
}
else {
retmsg = PROBE_GENERIC;
}
}
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;
char *dbuf;
ctlmsg->buf = Ctlbuf;
ctlmsg->maxlen = 1;
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;
dbuf = datamsg->buf;
if (Debug > 2) {
sysmessage(MSG_DEBUG,
" DATA: Ctl: %d bytes, Type: %d, Data: %d bytes, flags: %08X, rt %d\n",
ctllen, type, datalen, flags, retc);
}
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 (ctllen == 1) {
type = ctlmsg->buf[0];
}
else if (datalen > 0) {
if (Lasttype != -1) {
type = Lasttype;
}
else {
type = datamsg->buf[0];
dbuf++;
datalen--;
}
if (retc & MOREDATA) {
sysmessage(MSG_DEBUG,
"dev_getdata: A truncated message was received\n");
Lasttype = type;
}
else {
Lasttype = -1;
}
}
else {
type = TIOCPKT_DATA;
}
parse_message(type, dbuf, datalen);
return (0);
}
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)
{
struct strbuf *ctlmsg = &Message.ctlbuf;
struct strbuf *datamsg = &Message.databuf;
ctlmsg->len = 1;
ctlmsg->buf[0] = M_SIG;
datamsg->len = 1;
datamsg->buf[0] = SIGINT;
if (putmsg(P_mfd, ctlmsg, datamsg, RS_HIPRI) == -1) {
sysmessage(MSG_ERR,
"Can't send SIGINT to slave device : %s\n",
strerror(errno));
}
}
void
dev_hangup(void)
{
struct strbuf *ctlmsg = &Message.ctlbuf;
struct strbuf *datamsg = &Message.databuf;
ctlmsg->len = 1;
ctlmsg->buf[0] = M_SIG;
datamsg->len = 1;
datamsg->buf[0] = SIGHUP;
if (putmsg(P_mfd, ctlmsg, datamsg, RS_HIPRI) == -1) {
sysmessage(MSG_ERR,
"Can't send SIGHUP to slave device : %s\n",
strerror(errno));
}
}
/*
* Packet mode routines
*/
void
parse_message(unsigned char type, char *buf, int size)
{
char *msgt;
int i;
struct iocblk *iocp;
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;
}
}
if (type == TIOCPKT_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);
}
}
else {
parse_packet((int) type);
}
}
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;
case TIOCPKT_FLUSHWRITE:
flushmode = OPFLUSH_OUT;
break;
default:
flushmode = OPFLUSH_IO;
break;
}
SET_EVENT(EV_UP, EV_UPFLUSH, (void *) &flushmode, sizeof(int));
}
}
/*
* Termio / Termios routines
*/
void
parse_ioctl(int ioctype, void *iocdata)
{
switch (ioctype) {
case TCSETA:
parse_termio(ioctype, (struct termio *) iocdata);
break;
case TCSETAW:
parse_termio(ioctype, (struct termio *) iocdata);
break;
case TCSETAF:
parse_termio(ioctype, (struct termio *) iocdata);
break;
case TCSBRK:
parse_break((int *) iocdata);
break;
case TCFLSH:
parse_iocflush((int *) iocdata);
break;
case TCSETS:
parse_termios(ioctype, (struct termios *) iocdata);
break;
case TCSETSW:
parse_termios(ioctype, (struct termios *) iocdata);
break;
case TCSETSF:
parse_termios(ioctype, (struct termios *) iocdata);
break;
default:
sysmessage(MSG_WARNING, "Unsupported ioctl: %c %d\n",
(ioctype & IOCTYPE) >> 8, ioctype & 0xFF);
}
}
void
parse_termio(int mode, struct termio *tp)
{
struct iocontrol *iocp = &Pty.iocontrol;
struct portconfig *pcp = &iocp->io_portconfig;
switch (mode) {
case TCSETA:
iocp->io_oper = OP_SETNOW;
break;
case TCSETAW:
iocp->io_oper = OP_SETWAIT;
break;
case TCSETAF:
iocp->io_oper = OP_SETFLUSH;
break;
}
Pty.portmodes = termio_to_portmodes(tp);
memset((void *) pcp, 0, sizeof(struct portconfig));
termio_to_portconfig(tp, pcp);
SET_EVENT(EV_UP, EV_UPCONTROL, 0, 0);
}
void
parse_termios(int mode, struct termios *tp)
{
struct iocontrol *iocp = &Pty.iocontrol;
struct portconfig *pcp = &iocp->io_portconfig;
switch (mode) {
case TCSETS:
iocp->io_oper = OP_SETNOW;
break;
case TCSETSW:
iocp->io_oper = OP_SETWAIT;
break;
case TCSETSF:
iocp->io_oper = OP_SETFLUSH;
break;
}
Pty.portmodes = termios_to_portmodes(tp);
memset((void *) pcp, 0, sizeof(struct portconfig));
termios_to_portconfig(tp, pcp);
SET_EVENT(EV_UP, EV_UPCONTROL, 0, 0);
}
void
parse_break(int *interval)
{
struct iocontrol *iocp = &Pty.iocontrol;
iocp->io_oper = OP_SENDBREAK;
iocp->io_arg = *interval;
SET_EVENT(EV_UP, EV_UPCONTROL, 0, 0);
}
void
parse_iocflush(int *queues)
{
struct iocontrol *iocp = &Pty.iocontrol;
iocp->io_oper = OP_FLUSH;
switch (*queues) {
case TCIFLUSH:
iocp->io_arg = OPFLUSH_IN;
break;
case TCOFLUSH:
iocp->io_arg = OPFLUSH_OUT;
break;
case TCIOFLUSH:
iocp->io_arg = OPFLUSH_IO;
break;
}
SET_EVENT(EV_UP, EV_UPCONTROL, 0, 0);
}
int
termio_to_portmodes(struct termio *tp)
{
int portmodes;
if (tp->c_iflag & IGNBRK) {
portmodes |= PORT_IGNBRK;
}
else {
portmodes &= ~PORT_IGNBRK;
}
if (tp->c_iflag & BRKINT) {
portmodes |= PORT_BRKINT;
}
else {
portmodes &= ~PORT_BRKINT;
}
if (tp->c_iflag & IGNPAR) {
portmodes |= PORT_IGNPAR;
}
else {
portmodes &= ~PORT_IGNPAR;
}
if (tp->c_iflag & PARMRK) {
portmodes |= PORT_PARMRK;
}
else {
portmodes &= ~PORT_PARMRK;
}
if (tp->c_cflag & CLOCAL) {
portmodes |= PORT_CLOCAL;
}
else {
portmodes &= ~PORT_CLOCAL;
}
if (tp->c_cflag & HUPCL) {
portmodes |= PORT_HUPCL;
}
else {
portmodes &= ~PORT_HUPCL;
}
return (portmodes);
}
void
termio_to_portconfig(struct termio *tp, struct portconfig *pcp)
{
/* Speed */
pcp->speed = baud_index_to_int(tp->c_cflag & CBAUD);
if (pcp->speed == -1)
pcp->speed = 38400;
/* Datasize */
switch (tp->c_cflag & CSIZE) {
case CS5:
pcp->datasize = 5;
break;
case CS6:
pcp->datasize = 6;
break;
case CS7:
pcp->datasize = 7;
break;
case CS8:
default:
pcp->datasize = 8;
break;
}
/* Stopsize */
if (tp->c_cflag & CSTOPB) {
pcp->stopsize = COM_SSIZE_TWO;
}
else {
pcp->stopsize = COM_SSIZE_ONE;
}
/* Parity */
if (tp->c_cflag & PARENB) {
if (tp->c_cflag & PARODD) {
pcp->parity = COM_PARITY_ODD;
}
else {
pcp->parity = COM_PARITY_EVEN;
}
}
else {
pcp->parity = COM_PARITY_NONE;
}
/* Flow Control */
if (tp->c_iflag & IXON) {
pcp->flowc = COM_FLOW_SOFT;
}
else { /* Warning, assumes hardware flow control */
pcp->flowc = COM_FLOW_HARD;
}
}
int
termios_to_portmodes(struct termios *tp)
{
int portmodes;
if (tp->c_iflag & IGNBRK) {
portmodes |= PORT_IGNBRK;
}
else {
portmodes &= ~PORT_IGNBRK;
}
if (tp->c_iflag & BRKINT) {
portmodes |= PORT_BRKINT;
}
else {
portmodes &= ~PORT_BRKINT;
}
if (tp->c_iflag & IGNPAR) {
portmodes |= PORT_IGNPAR;
}
else {
portmodes &= ~PORT_IGNPAR;
}
if (tp->c_iflag & PARMRK) {
portmodes |= PORT_PARMRK;
}
else {
portmodes &= ~PORT_PARMRK;
}
if (tp->c_cflag & CLOCAL) {
portmodes |= PORT_CLOCAL;
}
else {
portmodes &= ~PORT_CLOCAL;
}
if (tp->c_cflag & HUPCL) {
portmodes |= PORT_HUPCL;
}
else {
portmodes &= ~PORT_HUPCL;
}
return (portmodes);
}
void
termios_to_portconfig(struct termios *tp, struct portconfig *pcp)
{
/* Speed */
speed_t speed = cfgetospeed(tp);
pcp->speed = baud_index_to_int(speed);
/* Datasize */
switch (tp->c_cflag & CSIZE) {
case CS5:
pcp->datasize = 5;
break;
case CS6:
pcp->datasize = 6;
break;
case CS7:
pcp->datasize = 7;
break;
case CS8:
default:
pcp->datasize = 8;
break;
}
/* Stopsize */
if (tp->c_cflag & CSTOPB) {
pcp->stopsize = COM_SSIZE_TWO;
}
else {
pcp->stopsize = COM_SSIZE_ONE;
}
/* Parity */
if (tp->c_cflag & PARENB) {
if (tp->c_cflag & PARODD) {
pcp->parity = COM_PARITY_ODD;
}
else {
pcp->parity = COM_PARITY_EVEN;
}
}
else {
pcp->parity = COM_PARITY_NONE;
}
/* Flow Control */
if (tp->c_iflag & IXON) {
pcp->flowc = COM_FLOW_SOFT;
}
else { /* Warning, assumes hardware flow control */
pcp->flowc = COM_FLOW_HARD;
}
}
/* Termios must be clean */
void
portconfig_to_termios(struct portconfig *pcp, struct termios *tp)
{
/* Speed */
speed_t speed = int_to_baud_index(pcp->speed);
cfsetospeed(tp, (speed_t) speed);
cfsetispeed(tp, (speed_t) B0);
/* Datasize */
switch (pcp->datasize) {
case 5:
tp->c_cflag |= CS5;
break;
case 6:
tp->c_cflag |= CS6;
break;
case 7:
tp->c_cflag |= CS7;
break;
case 8:
tp->c_cflag |= CS8;
break;
}
/* Stopsize */
if (pcp->stopsize == COM_SSIZE_TWO) {
tp->c_cflag |= CSTOPB;
} /* else one stop bit */
/* Parity */
switch (pcp->parity) {
case COM_PARITY_EVEN:
tp->c_cflag |= PARENB;
break;
case COM_PARITY_ODD:
tp->c_cflag |= PARENB | PARODD;
break;
case COM_PARITY_NONE:
default:
break;
}
/* Flow Control */