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#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include <sys/types.h>
#include <termios.h>
#include <unistd.h>
#include <fcntl.h>
#include <errno.h>
#include "sys9.h"
#include "lib.h"
#include "dir.h"
#define CESC '\\'
#define CINTR 0177 /* DEL */
#define CQUIT 034 /* FS, cntl | */
#define CERASE 010 /* BS */
#define CKILL 025 /* cntl u */
#define CEOF 04 /* cntl d */
#define CSTART 021 /* cntl q */
#define CSTOP 023 /* cntl s */
#define CSWTCH 032 /* cntl z */
#define CEOL 000
#define CNSWTCH 0
static int
isptty(int fd)
{
Dir *d;
int rv;
if((d = _dirfstat(fd)) == nil)
return 0;
rv = (strncmp(d->name, "ptty", 4) == 0);
free(d);
return rv;
}
int
tcgetattr(int fd, struct termios *t)
{
int n;
char buf[60];
if(!isptty(fd)) {
if(isatty(fd)) {
/* If there is no emulation return sensible defaults */
t->c_iflag = ISTRIP|ICRNL|IXON|IXOFF;
t->c_oflag = OPOST|TAB3|ONLCR;
t->c_cflag = B9600;
t->c_lflag = ISIG|ICANON|ECHO|ECHOE|ECHOK;
t->c_cc[VINTR] = CINTR;
t->c_cc[VQUIT] = CQUIT;
t->c_cc[VERASE] = CERASE;
t->c_cc[VKILL] = CKILL;
t->c_cc[VEOF] = CEOF;
t->c_cc[VEOL] = CEOL;
t->c_cc[VSTART] = CSTART;
t->c_cc[VSTOP] = CSTOP;
return 0;
} else {
errno = ENOTTY;
return -1;
}
}
if(_SEEK(fd, -2, 0) != -2) {
_syserrno();
return -1;
}
n = _READ(fd, buf, 57);
if(n < 0) {
_syserrno();
return -1;
}
t->c_iflag = strtoul(buf+4, 0, 16);
t->c_oflag = strtoul(buf+9, 0, 16);
t->c_cflag = strtoul(buf+14, 0, 16);
t->c_lflag = strtoul(buf+19, 0, 16);
for(n = 0; n < NCCS; n++)
t->c_cc[n] = strtoul(buf+24+(n*3), 0, 16);
return 0;
}
/* BUG: ignores optional actions */
int
tcsetattr(int fd, int, const struct termios *t)
{
int n, i;
char buf[100];
if(!isptty(fd)) {
if(!isatty(fd)) {
errno = ENOTTY;
return -1;
} else
return 0;
}
n = sprintf(buf, "IOW %4.4x %4.4x %4.4x %4.4x ",
t->c_iflag, t->c_oflag, t->c_cflag, t->c_lflag);
for(i = 0; i < NCCS; i++)
n += sprintf(buf+n, "%2.2x ", t->c_cc[i]);
if(_SEEK(fd, -2, 0) != -2) {
_syserrno();
return -1;
}
n = _WRITE(fd, buf, n);
if(n < 0) {
_syserrno();
return -1;
}
return 0;
}
int
tcsetpgrp(int fd, pid_t pgrpid)
{
int n;
char buf[30];
if(!isptty(fd)) {
if(!isatty(fd)) {
errno = ENOTTY;
return -1;
} else
return 0;
}
n = sprintf(buf, "IOW note %d", pgrpid);
if(_SEEK(fd, -2, 0) != -2) {
_syserrno();
return -1;
}
n = _WRITE(fd, buf, n);
if(n < 0) {
_syserrno();
return -1;
}
return 0;
}
pid_t
tcgetpgrp(int fd)
{
int n;
pid_t pgrp;
char buf[100];
if(!isptty(fd)) {
errno = ENOTTY;
return -1;
}
if(_SEEK(fd, -2, 0) != -2) {
_syserrno();
return -1;
}
n = _READ(fd, buf, sizeof(buf));
if(n < 0) {
_syserrno();
return -1;
}
pgrp = atoi(buf+24+(NCCS*3));
return pgrp;
}
/* should do a better job here */
int
tcdrain(int)
{
errno = ENOTTY;
return -1;
}
int
tcflush(int, int)
{
errno = ENOTTY;
return -1;
}
int
tcflow(int, int)
{
errno = ENOTTY;
return -1;
}
int
tcsendbreak(int)
{
errno = ENOTTY;
return -1;
}
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