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/* Determine name of the slave side of a pseudo-terminal.
Copyright (C) 1998, 2002, 2010-2021 Free Software Foundation, Inc.
This file is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as
published by the Free Software Foundation; either version 2.1 of the
License, or (at your option) any later version.
This file is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
#include <config.h>
#include <stdlib.h>
/* Static buffer for 'ptsname'. */
static char buffer[64];
/* Return the pathname of the pseudo terminal slave associated with
the master FD is open on, or NULL on errors.
The returned storage is good until the next call to this function. */
char *
ptsname (int fd)
{
return ptsname_r (fd, buffer, sizeof (buffer)) != 0 ? NULL : buffer;
}
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