GETPT(3) Linux Programmer's Manual GETPT(3)NAME
getpt - open the pseudo-terminal master (PTM)
SYNOPSIS
#define _GNU_SOURCE /* See feature_test_macros(7) */
#include <stdlib.h>
int getpt(void);
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.
ERRORS
getpt() can fail with various errors described in open(2).
VERSIONS
getpt() is provided in glibc since version 2.1.
CONFORMING TO
getpt() is glibc-specific; use posix_openpt(3) instead.
SEE ALSO grantpt(3), posix_openpt(3), ptsname(3), unlockpt(3), ptmx(4), pty(7)COLOPHON
This page is part of release 3.27 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)
Check Out this Related Man Page
GETPT(3) Linux Programmer's Manual GETPT(3)NAME
getpt - open the pseudoterminal master (PTM)
SYNOPSIS
#define _GNU_SOURCE /* See feature_test_macros(7) */
#include <stdlib.h>
int getpt(void);
DESCRIPTION
getpt() 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 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).
VERSIONS
getpt() is provided in glibc since version 2.1.
CONFORMING TO
getpt() is glibc-specific; use posix_openpt(3) instead.
SEE ALSO grantpt(3), posix_openpt(3), ptsname(3), unlockpt(3), ptmx(4), pty(7)COLOPHON
This page is part of release 3.44 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)
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