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/* Create a named fifo relative to an open directory.
Copyright (C) 2009-2015 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 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 <http://www.gnu.org/licenses/>. */
/* written by Eric Blake */
#include <config.h>
#include <sys/stat.h>
#if !HAVE_MKFIFO
# include <errno.h>
/* Mingw lacks mkfifo, so this wrapper is trivial. */
int
mkfifoat (int fd _GL_UNUSED, char const *path _GL_UNUSED,
mode_t mode _GL_UNUSED)
{
errno = ENOSYS;
return -1;
}
#else /* HAVE_MKFIFO */
/* Create a named fifo FILE relative to directory FD, with access
permissions in MODE. If possible, do it without changing the
working directory. Otherwise, resort to using save_cwd/fchdir,
then mkfifo/restore_cwd. If either the save_cwd or the restore_cwd
fails, then give a diagnostic and exit nonzero. */
# define AT_FUNC_NAME mkfifoat
# define AT_FUNC_F1 mkfifo
# define AT_FUNC_POST_FILE_PARAM_DECLS , mode_t mode
# define AT_FUNC_POST_FILE_ARGS , mode
# include "at-func.c"
# undef AT_FUNC_NAME
# undef AT_FUNC_F1
# undef AT_FUNC_POST_FILE_PARAM_DECLS
# undef AT_FUNC_POST_FILE_ARGS
#endif /* HAVE_MKFIFO */
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