NAME
getpt - open a new pseudoterminal master
LIBRARY
Standard C library (libc, -lc)
SYNOPSIS
#define _GNU_SOURCE\n /* See feature_test_macros(7) */
\n#include <stdlib.h>int getpt(void);DESCRIPTION
getpt() opens a new pseudoterminal device and returns a file descriptor that refers to that device. It is equivalent to opening the pseudoterminal multiplexor device
open("/dev/ptmx", O_RDWR);on Linux systems, though the pseudoterminal multiplexor device is located elsewhere on some systems that use the GNU C library.
RETURN VALUE
getpt() returns an open file descriptor upon successful completion. Otherwise, it returns -1 and sets errno to indicate the error.
ERRORS
getpt() can fail with various errors described in open(2).
ATTRIBUTES
For an explanation of the terms used in this section, see attributes(7).
| Interface | Attribute | Value |
| getpt () | Thread safety | MT-Safe |
VERSIONS
Use posix_openpt(3) instead.
STANDARDS
GNU.
HISTORY
glibc 2.1.
SEE ALSO
grantpt(3), posix_openpt(3), ptsname(3), unlockpt(3), ptmx(4), pty(7)