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getpt(3) -- Linux man page
NAME
getpt - open the pseudo-terminal master (PTM)
SYNOPSIS
#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.
CONFORMING TO
getpt()
is specific to GNU Libc.
SEE ALSO
ptmx(4),
grantpt(3),
unlockpt(3),
ptsname(3)
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