/* modechange.h -- definitions for file mode manipulation
- Copyright (C) 1989, 1990 Free Software Foundation, Inc.
- This program is free software; you can redistribute it and/or modify
+ Copyright (C) 1989-1990, 1997, 2003-2006, 2009-2013 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 2, or (at your option)
- any later version.
+ 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
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, write to the Free Software
- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
-
-/* Masks for the `flags' field in a `struct mode_change'. */
-
-/* Affect the execute bits only if at least one execute bit is set already,
- or if the file is a directory. */
-#define MODE_X_IF_ANY_X 01
-
-/* If set, copy some existing permissions for u, g, or o onto the other two.
- Which of u, g, or o is copied is determined by which bits are set in the
- `value' field. */
-#define MODE_COPY_EXISTING 02
-
-struct mode_change
-{
- char op; /* One of "=+-". */
- char flags; /* Special operations. */
- unsigned short affected; /* Set for u/g/o/s/s/t, if to be affected. */
- unsigned short value; /* Bits to add/remove. */
- struct mode_change *next; /* Link to next change in list. */
-};
-
-/* Masks for mode_compile argument. */
-#define MODE_MASK_EQUALS 1
-#define MODE_MASK_PLUS 2
-#define MODE_MASK_MINUS 4
-
-/* Error return values for mode_compile. */
-#define MODE_INVALID (struct mode_change *) 0
-#define MODE_MEMORY_EXHAUSTED (struct mode_change *) 1
-
-#ifdef __STDC__
-struct mode_change *mode_compile (char *, unsigned);
-unsigned short mode_adjust (unsigned, struct mode_change *);
-void mode_free (struct mode_change *);
-#else
-struct mode_change *mode_compile ();
-unsigned short mode_adjust ();
-void mode_free ();
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
+
+#if ! defined MODECHANGE_H_
+# define MODECHANGE_H_
+
+# include <stdbool.h>
+# include <sys/types.h>
+
+struct mode_change *mode_compile (const char *);
+struct mode_change *mode_create_from_ref (const char *);
+mode_t mode_adjust (mode_t, bool, mode_t, struct mode_change const *,
+ mode_t *);
+
#endif