Add bash 5.2 to third_party

third_party/bash/filecntl.h

@@ -0,0 +1,53 @@
+/* filecntl.h - Definitions to set file descriptors to close-on-exec. */
+
+/* Copyright (C) 1993 Free Software Foundation, Inc.
+
+   This file is part of GNU Bash, the Bourne Again SHell.
+
+   Bash 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.
+
+   Bash 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 Bash.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#if !defined (_FILECNTL_H_)
+#define _FILECNTL_H_
+
+#include <fcntl.h>
+
+/* Definitions to set file descriptors to close-on-exec, the Posix way. */
+#if !defined (FD_CLOEXEC)
+#define FD_CLOEXEC     1
+#endif
+
+#define FD_NCLOEXEC    0
+
+#define SET_CLOSE_ON_EXEC(fd)  (fcntl ((fd), F_SETFD, FD_CLOEXEC))
+#define SET_OPEN_ON_EXEC(fd)   (fcntl ((fd), F_SETFD, FD_NCLOEXEC))
+
+/* How to open a file in non-blocking mode, the Posix.1 way. */
+#if !defined (O_NONBLOCK)
+#  if defined (O_NDELAY)
+#    define O_NONBLOCK O_NDELAY
+#  else
+#    define O_NONBLOCK 0
+#  endif
+#endif
+
+/* Make sure O_BINARY and O_TEXT are defined to avoid Windows-specific code. */
+#if !defined (O_BINARY)
+#  define O_BINARY 0
+#endif
+#if !defined (O_TEXT)
+#  define O_TEXT 0
+#endif
+
+#endif /* ! _FILECNTL_H_ */