#include <unistd.h>#include <string.h>#include <fcntl.h>#include <sys/time.h>#include "serial.h"#if defined(__sun__) || defined(__OpenBSD__) || defined(__FreeBSD__) || defined(__NetBSD__)static struct termios tios = { BRKINT, 0, B115200|CS8|CREAD, 0, { 0 } };#elsestatic struct termios tios = { BRKINT, 0, B115200|CS8|CREAD, 0,   0   };#endifstatic struct speedmap {    char *str;    speed_t val;} speedmap[] = {    { "50", B50 },		{ "75", B75 },		{ "110", B110 },    { "134", B134 },		{ "150", B150 },	{ "200", B200 },    { "300", B300 },		{ "600", B600 },	{ "1200", B1200 },    { "1800", B1800 },		{ "2400", B2400 },	{ "4800", B4800 },    { "9600", B9600 },		{ "19200", B19200 },	{ "38400", B38400 },    { "57600", B57600 },#ifdef	B76800    { "76800", B76800 },#endif    { "115200", B115200 },#ifdef	B153600    { "153600", B153600 },#endif    { "230400", B230400 },#ifdef	B307200    { "307200", B307200 },#endif#ifdef B460800    { "460800", B460800 }#endif};static int nspeeds = sizeof speedmap / sizeof speedmap[0];speed_tcvtspeed(char *str){    struct speedmap *smp = speedmap, *esmp = &speedmap[nspeeds];    while (smp < esmp) {	if (strcmp(str, smp->str) == 0)	    return (smp->val);	smp++;    }    return B0;}intserialopen(char *device, speed_t speed){    int fd;    if (cfsetospeed(&tios, speed) < 0)	return -1;    if ((fd = open(device, O_RDWR)) < 0)	return -1;    if (tcsetattr(fd, TCSAFLUSH, &tios) < 0) {	(void)close(fd);	return -1;    }    return fd;}intserialreadchar(int fd, int timeout){    fd_set fds;    struct timeval tv;    int n;    char ch;    tv.tv_sec = timeout;    tv.tv_usec = 0;    FD_ZERO(&fds);    FD_SET(fd, &fds);    /* this is a fucking horrible quick hack - fix this */    if ((n = select(fd + 1, &fds, 0, 0, &tv)) < 0)	return SERIAL_ERROR;    if (n == 0)	return SERIAL_TIMEOUT;    if ((n = read(fd, &ch, 1)) < 0)	return SERIAL_ERROR;    if (n == 0)	return SERIAL_EOF;    return ch;}intserialwrite(int fd, char *buf, int len){    int n;    do {	n = write(fd, buf, len);	if (n < 0)	    return 1;	len -= n;	buf += n;    } while (len > 0);    return 0;}intserialclose(int fd){    return close(fd);}