Mercurial > gnulib
view lib/tcgetsid.c @ 17249:e542fd46ad6f
maint: update all copyright year number ranges
Run "make update-copyright". Compare to commit 1602f0a from last year.
Signed-off-by: Eric Blake <eblake@redhat.com>
author | Eric Blake <eblake@redhat.com> |
---|---|
date | Tue, 01 Jan 2013 00:50:58 +0000 |
parents | 498a2211d839 |
children | 344018b6e5d7 |
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/* Determine the session ID of the controlling terminal of the current process. Copyright (C) 2010-2013 Free Software Foundation, Inc. This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2, or (at your option) any later version. This program 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 General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, see <http://www.gnu.org/licenses/>. */ #include <config.h> #define USE_OLD_TTY /* needed on OpenBSD 4.5, so that TIOCGSID gets defined */ /* Specification. */ #include <termios.h> #include <errno.h> #include <sys/ioctl.h> pid_t tcgetsid (int fd) { #ifdef TIOCGSID /* Mac OS X, OpenBSD */ int sid; if (ioctl (fd, TIOCGSID, &sid) < 0) return -1; /* errno is set here */ return sid; #else /* FreeBSD, Cygwin, mingw */ errno = ENOSYS; return -1; #endif }