getpt3
Open a new pseudoterminal master
Usage
#define _GNU_SOURCE /* See feature_test_macros(7) */ #include <stdlib.h>
int getpt(void);
Library
Standard C library (libc, -lc)
Overview
getpt() opens a new pseudoterminal device and returns a file descriptor that refers to that device. It is equivalent to opening the pseudoterminal multiplexer device
open("/dev/ptmx", O_RDWR);
on Linux systems, though the pseudoterminal multiplexer 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.
Releases
12 releases since Debian 3.1 (Sarge); the text changed 11 times.