Mercurial > gnulib
view lib/unlockpt.c @ 40160:5c7e0484c1e9
tmpfile: Add support for Android.
* m4/tmpfile.m4 (gl_FUNC_TMPFILE): Add a runtime test whether tmpfile()
works.
* lib/tmpfile.c (tmpfile): Add an alternative implementation for
Android.
* modules/tmpfile (Depends-on): Add 'stdbool'.
* doc/posix-functions/tmpfile.texi: Mention the Android bug.
* modules/argv-iter-tests (Depends-on): Add 'tmpfile'.
author | Bruno Haible <bruno@clisp.org> |
---|---|
date | Sun, 27 Jan 2019 22:03:14 +0100 |
parents | b06060465f09 |
children |
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/* Unlock the slave side of a pseudo-terminal from its master side. Copyright (C) 1998, 2010-2019 Free Software Foundation, Inc. Contributed by Zack Weinberg <zack@rabi.phys.columbia.edu>, 1998. 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 3 of the License, 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> #include <stdlib.h> #include <fcntl.h> #include <unistd.h> int unlockpt (int fd) { /* Platforms which have the TIOCSPTLCK ioctl (Linux) already have the unlockpt function. */ #if HAVE_REVOKE /* Mac OS X 10.3, OpenBSD 3.8 do not have the unlockpt function, but they have revoke(). */ char *name = ptsname (fd); if (name == NULL) return -1; return revoke (name); #else /* Assume that the slave side of a pseudo-terminal is already unlocked by default. */ if (fcntl (fd, F_GETFD) < 0) return -1; return 0; #endif }