[thirdparty/systemd.git] / klibc / klibc / pty.c

/*
 * pty.c
 *
 * Basic Unix98 PTY functionality; assumes devpts mounted on /dev/pts
 */

#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <termios.h>
#include <sys/ioctl.h>

char *ptsname(int fd)
{
  static char buffer[32];	/* Big enough to hold even a 64-bit pts no */
  unsigned int ptyno;

  if ( ioctl(fd, TIOCGPTN, &ptyno) )
    return NULL;
  
  snprintf(buffer, sizeof buffer, "/dev/pts/%u", ptyno);
  
  return buffer;
}

int unlockpt(int fd)
{
  int unlock = 0;

  return ioctl(fd, TIOCSPTLCK, &unlock);
}
Commit	Line	Data
a41a0e28 GKH	1	/*
	2	* pty.c
	3	*
73028bc3	4	* Basic Unix98 PTY functionality; assumes devpts mounted on /dev/pts
a41a0e28 GKH	5	*/
	6
	7	#include <stdio.h>
	8	#include <stdlib.h>
	9	#include <unistd.h>
	10	#include <termios.h>
	11	#include <sys/ioctl.h>
	12
	13	char *ptsname(int fd)
	14	{
	15	static char buffer[32]; /* Big enough to hold even a 64-bit pts no */
	16	unsigned int ptyno;
	17
	18	if ( ioctl(fd, TIOCGPTN, &ptyno) )
	19	return NULL;
	20
	21	snprintf(buffer, sizeof buffer, "/dev/pts/%u", ptyno);
	22
	23	return buffer;
	24	}
	25
	26	int unlockpt(int fd)
	27	{
	28	int unlock = 0;
	29
	30	return ioctl(fd, TIOCSPTLCK, &unlock);
	31	}