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/*
* (c) Copyright QNX Software Systems Ltd. 2002.
* All Rights Reserved.
*
*/
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/ioctl.h>
#include <fcntl.h>
#include <termios.h>
#include <errno.h>
#include <unistd.h>
#include <stdio.h>
#include <string.h>
#include <grp.h>
#include <stdlib.h>
#include <stropts.h>
/**
* This is taken from R. W. Stevens book.
* Alain Magloire.
*/
int ptym_open (char *pts_name);
int ptys_open (int fdm, char * pts_name);
int
openpty(int *amaster, int *aslave, char *name, struct termios *termp, struct winsize *winp)
{
char line[20];
line[0]=0;
*amaster = ptym_open(line);
if (*amaster < 0)
return -1;
*aslave = ptys_open(*amaster, line);
if (*aslave < 0) {
close(*amaster);
return -1;
}
if (name)
strcpy(name, line);
#ifndef TCSAFLUSH
#define TCSAFLUSH TCSETAF
#endif
if (termp)
(void) tcsetattr(*aslave, TCSAFLUSH, termp);
#ifdef TIOCSWINSZ
if (winp)
(void) ioctl(*aslave, TIOCSWINSZ, (char *)winp);
#endif
return 0;
}
int
ptym_open(char * pts_name)
{
int fdm;
char *ptr;
strcpy(pts_name, "/dev/ptmx");
fdm = getpt();
if (fdm < 0)
return -1;
if (grantpt(fdm) < 0) { /* grant access to slave */
close(fdm);
return -2;
}
if (unlockpt(fdm) < 0) { /* clear slave's lock flag */
close(fdm);
return -3;
}
ptr = ptsname(fdm);
if (ptr == NULL) { /* get slave's name */
close (fdm);
return -4;
}
strcpy(pts_name, ptr); /* return name of slave */
return fdm; /* return fd of master */
}
int
ptys_open(int fdm, char * pts_name)
{
int fds;
/* following should allocate controlling terminal */
fds = open(pts_name, O_RDWR);
if (fds < 0) {
close(fdm);
return -5;
}
if (ioctl(fds, I_PUSH, "ptem") < 0) {
printf("pterm:%s\n", strerror(errno));
close(fdm);
close(fds);
return -6;
}
if (ioctl(fds, I_PUSH, "ldterm") < 0) {
printf("ldterm %s\n", strerror(errno));
close(fdm);
close(fds);
return -7;
}
return fds;
}
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