1 files changed, 55 insertions, 0 deletions
diff --git a/gnu/mkfifoat.c b/gnu/mkfifoat.c
new file mode 100644
index 0000000..4d23590
--- /dev/null
+++ b/gnu/mkfifoat.c
@@ -0,0 +1,55 @@
+/* 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 */