GNU/Linux man pages
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GNU/Linux |
Debian 6.0.8(Squeeze) |
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getpt(3) |
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getpt − open the pseudo-terminal master (PTM)
#define
_GNU_SOURCE /* See feature_test_macros(7) */
#include <stdlib.h>
int getpt(void);
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.
getpt() returns an open file descriptor upon successful completion. Otherwise, it returns −1 and sets errno to indicate the error.
getpt() can fail with various errors described in open(2).
getpt() is provided in glibc since version 2.1.
getpt() is glibc-specific; use posix_openpt(3) instead.
grantpt(3), posix_openpt(3), ptsname(3), unlockpt(3), ptmx(4), pty(7)
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/.
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getpt(3) | |