GETPT(3) Linux Programmer's Manual GETPT(3)NAMEgetpt - open the pseudoterminal master (PTM)
#define _GNU_SOURCE /* See feature_test_macros(7) */
DESCRIPTIONgetpt() opens a pseudoterminal master and returns its file descriptor.
It is equivalent to
open(/dev/ptmx, O_RDWR | O_NOCTTY);
on Linux systems, though the pseudoterminal master is located elsewhere
on some systems that use GNU Libc.
RETURN VALUEgetpt() returns an open file descriptor upon successful completion.
Otherwise, it returns -1 and sets errno to indicate the error.
ERRORSgetpt() can fail with various errors described in open(2).
VERSIONSgetpt() is provided in glibc since version 2.1.
CONFORMING TOgetpt() is glibc-specific; use posix_openpt(3) instead.
SEE ALSOgrantpt(3), posix_openpt(3), ptsname(3), unlockpt(3), ptmx(4), pty(7)COLOPHON
This page is part of release 3.54 of the Linux man-pages project. A
description of the project, and information about reporting bugs, can
be found at http://www.kernel.org/doc/man-pages/.
GNU 2010-09-10 GETPT(3)