DESCRIPTION

getpt() opens a pseudo-terminal master and returns its file descriptor. It is equivalent to

    open(/dev/ptmx, O_RDWR | O_NOCTTY);

on Linux systems, though the pseudo-terminal master is located elsewhere on some systems that use GNU Libc.

RETURN VALUE

getpt() returns an open file descriptor upon successful completion. Otherwise, it returns −1 and sets errno to indicate the error.

CONFORMING TO

getpt() is specific to GNU Libc.

SEE ALSO

grantpt(3), ptsname(3), posix_openpt(3), unlockpt(3), ptmx(4), pty(7)