Add ncurses 6.4

third_party/ncurses/nc_access.h

@@ -0,0 +1,80 @@
+/****************************************************************************
+ * Copyright 2021 Thomas E. Dickey                                          *
+ *                                                                          *
+ * Permission is hereby granted, free of charge, to any person obtaining a  *
+ * copy of this software and associated documentation files (the            *
+ * "Software"), to deal in the Software without restriction, including      *
+ * without limitation the rights to use, copy, modify, merge, publish,      *
+ * distribute, distribute with modifications, sublicense, and/or sell       *
+ * copies of the Software, and to permit persons to whom the Software is    *
+ * furnished to do so, subject to the following conditions:                 *
+ *                                                                          *
+ * The above copyright notice and this permission notice shall be included  *
+ * in all copies or substantial portions of the Software.                   *
+ *                                                                          *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS  *
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF               *
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.   *
+ * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,   *
+ * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR    *
+ * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR    *
+ * THE USE OR OTHER DEALINGS IN THE SOFTWARE.                               *
+ *                                                                          *
+ * Except as contained in this notice, the name(s) of the above copyright   *
+ * holders shall not be used in advertising or otherwise to promote the     *
+ * sale, use or other dealings in this Software without prior written       *
+ * authorization.                                                           *
+ ****************************************************************************/
+
+/* $Id: nc_access.h,v 1.2 2021/07/10 22:07:06 tom Exp $ */
+
+#ifndef NC_ACCESS_included
+#define NC_ACCESS_included 1
+/* *INDENT-OFF* */
+
+#include "ncurses_cfg.h"
+#include "curses.h"
+#include <sys/types.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*
+ * Turn off this symbol to limit access to environment variables when root.
+ */
+#ifdef USE_ROOT_ENVIRON
+
+#define use_terminfo_vars() 1
+
+#else
+
+#define use_terminfo_vars() _nc_env_access()
+extern NCURSES_EXPORT(int) _nc_env_access (void);
+
+#endif
+
+/*
+ * Turn off this symbol to limit access to files when running setuid.
+ */
+#ifdef USE_ROOT_ACCESS
+
+#define safe_fopen(name,mode) fopen(name,mode)
+#define safe_open3(name,flags,mode) open(name,flags,mode)
+
+#else
+
+#define safe_fopen(name,mode) fopen(name,mode)
+#define safe_open3(name,flags,mode) open(name,flags,mode)
+extern NCURSES_EXPORT(FILE *) _nc_safe_fopen (const char *, const char *);
+extern NCURSES_EXPORT(int) _nc_safe_open3 (const char *, int, mode_t);
+
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+
+/* *INDENT-ON* */
+
+#endif /* NC_ACCESS_included */