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. ATTRIBUTES Multithreading (see pthreads(7)) The getpt() function is thread-safe. 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 3.74 of the Linux man-pages project. A description of the project, information about reporting bugs, and the latest version of this page, can be found at http://www.kernel.org/doc/man-pages/. GNU 2014-04-01 GETPT(3)
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