/* modechange.h -- definitions for file mode manipulation Copyright (C) 1989, 1990, 1997, 2003, 2004 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. 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, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ /* Masks for the `flags' field in a `struct mode_change'. */ #if ! defined MODECHANGE_H_ # define MODECHANGE_H_ # include <sys/types.h> /* 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. */ mode_t affected; /* Set for u/g/o/s/s/t, if to be affected. */ mode_t 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 # define MODE_MASK_ALL (MODE_MASK_EQUALS | MODE_MASK_PLUS | MODE_MASK_MINUS) /* Error return values for mode_compile. */ # define MODE_INVALID (struct mode_change *) 0 # define MODE_MEMORY_EXHAUSTED (struct mode_change *) 1 # define MODE_BAD_REFERENCE (struct mode_change *) 2 struct mode_change *mode_compile (const char *, unsigned int); struct mode_change *mode_create_from_ref (const char *); mode_t mode_adjust (mode_t, const struct mode_change *); void mode_free (struct mode_change *); #endif