Mercurial > gnulib
view lib/tcgetsid.c @ 40236:e3496deebf30
isatty: Make it return true in Cygwin consoles on native Windows.
* lib/isatty.c: Include <string.h>.
(GetProcAddress): New macro.
(GetNamedPipeClientProcessIdFuncType): New type.
(GetNamedPipeClientProcessIdFunc): New variable.
(QueryFullProcessImageNameFuncType): New type.
(QueryFullProcessImageNameFunc): New variable.
(initialized): New variable.
(initialize): New function.
(IsCygwinConsoleHandle): New function.
(isatty): Invoke it.
* doc/posix-functions/isatty.texi: Mention the issue.
author | Bruno Haible <bruno@clisp.org> |
---|---|
date | Thu, 14 Mar 2019 23:54:28 +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 }