getpt - open a new pseudoterminal master
Standard C library (libc, -lc)
#define _GNU_SOURCE /* See feature_test_macros(7) */
#include <stdlib.h>
int getpt(void);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.
getpt() returns an open file descriptor upon
successful completion. Otherwise, it returns -1 and sets errno
to indicate the error.
For an explanation of the terms used in this section, see attributes(7).
| Interface | Attribute | Value |
getpt() |
Thread safety | MT-Safe |
Use posix_openpt(3) instead.
GNU.
glibc 2.1.