72 lines
2.4 KiB
C
72 lines
2.4 KiB
C
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/* modechange.h -- definitions for file mode manipulation
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Copyright (C) 1989, 1990, 1997 Free Software Foundation, Inc.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software Foundation,
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Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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/* Masks for the `flags' field in a `struct mode_change'. */
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#if ! defined MODECHANGE_H_
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# define MODECHANGE_H_
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# if HAVE_CONFIG_H
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# include <config.h>
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# endif
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# include <sys/types.h>
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/* Affect the execute bits only if at least one execute bit is set already,
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or if the file is a directory. */
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# define MODE_X_IF_ANY_X 01
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/* If set, copy some existing permissions for u, g, or o onto the other two.
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Which of u, g, or o is copied is determined by which bits are set in the
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`value' field. */
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# define MODE_COPY_EXISTING 02
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struct mode_change
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{
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char op; /* One of "=+-". */
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char flags; /* Special operations. */
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mode_t affected; /* Set for u/g/o/s/s/t, if to be affected. */
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mode_t value; /* Bits to add/remove. */
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struct mode_change *next; /* Link to next change in list. */
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};
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/* Masks for mode_compile argument. */
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# define MODE_MASK_EQUALS 1
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# define MODE_MASK_PLUS 2
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# define MODE_MASK_MINUS 4
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# define MODE_MASK_ALL (MODE_MASK_EQUALS | MODE_MASK_PLUS | MODE_MASK_MINUS)
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/* Error return values for mode_compile. */
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# define MODE_INVALID (struct mode_change *) 0
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# define MODE_MEMORY_EXHAUSTED (struct mode_change *) 1
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# define MODE_BAD_REFERENCE (struct mode_change *) 2
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# ifndef PARAMS
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# if defined PROTOTYPES || (defined __STDC__ && __STDC__)
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# define PARAMS(Args) Args
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# else
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# define PARAMS(Args) ()
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# endif
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# endif
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struct mode_change *mode_compile PARAMS ((const char *, unsigned));
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struct mode_change *mode_create_from_ref PARAMS ((const char *));
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mode_t mode_adjust PARAMS ((mode_t, const struct mode_change *));
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void mode_free PARAMS ((struct mode_change *));
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#endif
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