Mercurial > gnulib
view lib/tcgetsid.c @ 40198:5a34193cbc07
long-options: add parse_gnu_standard_options_only
Discussed in https://bugs.gnu.org/33468 .
* lib/long-options.c (parse_long_options): Use EXIT_SUCCESS instead
of 0.
(parse_gnu_standard_options_only): Add function to
process the GNU default options --help and --version and fail for any other
unknown long or short option. See
https://gnu.org/prep/standards/html_node/Command_002dLine-Interfaces.html .
* lib/long-options.h (parse_gnu_standard_options_only): Declare it.
* modules/long-options (depends-on): Add stdbool, exitfail.
* top/maint.mk (sc_prohibit_long_options_without_use): Update
syntax-check rule, add new function name.
author | Bernhard Voelker <mail@bernhard-voelker.de> |
---|---|
date | Thu, 29 Nov 2018 09:06:26 +0100 |
parents | b06060465f09 |
children |
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/* Determine the session ID of the controlling terminal of the current process. Copyright (C) 2010-2019 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 <https://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 }