NAME
getpt - open the pseudoterminal master (PTM) SYNOPSIS
#define GNUSOURCE /* See featuretestmacros(7) */
#include
int getpt(void); DESCRIPTION getpt() opens a pseudoterminal master and returns its file descriptor. It is equivalent to open(/dev/ptmx, ORDWR | ONOCTTY); 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 For an explanation of the terms used in this section, see attributes(7). ┌──────────┬───────────────┬─────────┐ │Interface │ Attribute │ Value │ ├──────────┼───────────────┼─────────┤
│getpt() │ Thread safety │ MT-Safe │ └──────────┴───────────────┴─────────┘ CONFORMING TO
getpt() is glibc-specific; use posixopenpt(3) instead. SEE ALSO grantpt(3), posixopenpt(3), ptsname(3), unlockpt(3), ptmx(4), pty(7) COLOPHON
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GNU 2010-09-10 GETPT(3)