Copyright 1999-2003 John D. Polstra.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgment:
* This product includes software developed by John D. Polstra.
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
UNSAFE MODULE DevT;
IMPORT
CText, Ctypes, Fmt, OSError, OSErrorPosix, TokScan, Unix, Utypes, Word, Long;
PROCEDURE Decode(t: TEXT): T
RAISES {TokScan.Error} =
BEGIN
RETURN TokScan.AtoL(t, "dev_t", 16);
END Decode;
PROCEDURE Encode(READONLY dev: T): TEXT =
BEGIN
RETURN Fmt.LongUnsigned(dev, 16);
END Encode;
PROCEDURE Equal(READONLY a, b: T): BOOLEAN =
BEGIN
RETURN a = b;
END Equal;
PROCEDURE Hash(READONLY dev: T): Word.T =
BEGIN
RETURN Word.Xor(VAL(Long.RightShift(dev, 32), Word.T),
VAL(Long.And(dev, 16_FFFFFFFFL), Word.T));
END Hash;
PROCEDURE Mknod(path: TEXT;
mode: Utypes.mode_t;
READONLY dev: T) RAISES {OSError.E} =
VAR
pathStr: Ctypes.char_star;
r: Ctypes.int;
BEGIN
pathStr := CText.SharedTtoS(path);
r := Unix.mknod(pathStr, mode, dev);
CText.FreeSharedS(path, pathStr);
IF r = -1 THEN
OSErrorPosix.Raise();
END;
END Mknod;
BEGIN
END DevT.