Description Chris Recoskie 2011-11-29 17:13:08 EST

In openpty.c, there is the following code:

int
ptym_open(char * pts_name)
{
	int fdm;
	char *ptr;

	strcpy(pts_name, "/dev/ptmx");
	fdm = getpt();


Unfortunately, getpt() doesn't exist on AIX.  There is no compile or link error as implicit int is assumed for the declaration of getpt(), and external symbols are not resolved during a shared library link.  This means PTY support has been broken on AIX for a long, long time.  We need to use it though for RDT so we stumbled upon this problem.

The fix is a one liner... we need to call posix_openpt(O_RDWR) instead.