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74 lines
2.9 KiB
C
74 lines
2.9 KiB
C
/* $Id: disk.c,v 1.2 2004/01/09 03:25:05 fredette Exp $ */
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/* generic/disk.c - generic disk implementation support: */
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/*
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* Copyright (c) 2003 Matt Fredette
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Matt Fredette.
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* 4. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
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* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <tme/common.h>
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_TME_RCSID("$Id: disk.c,v 1.2 2004/01/09 03:25:05 fredette Exp $");
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/* includes: */
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#include <tme/generic/disk.h>
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#include <tme/misc.h>
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#include <stdlib.h>
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/* this scores a disk connection: */
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int
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tme_disk_connection_score(struct tme_connection *conn,
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unsigned int *_score)
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{
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struct tme_disk_connection *conn_disk;
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struct tme_disk_connection *conn_disk_other;
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/* both sides must be disk connections: */
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assert(conn->tme_connection_type == TME_CONNECTION_DISK);
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assert(conn->tme_connection_other->tme_connection_type == TME_CONNECTION_DISK);
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/* you cannot connect a disk to a disk, or a disk frontend to a disk
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frontend: */
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conn_disk = (struct tme_disk_connection *) conn;
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conn_disk_other = (struct tme_disk_connection *) conn->tme_connection_other;
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*_score
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= ((conn_disk->tme_disk_connection_read != NULL
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|| conn_disk->tme_disk_connection_write != NULL)
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!= (conn_disk_other->tme_disk_connection_read != NULL
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|| conn_disk_other->tme_disk_connection_write != NULL));
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return (TME_OK);
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}
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/* this parses a disk dimension: */
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tme_uint32_t
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tme_disk_dimension_parse(const char *dimension_string)
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{
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return (tme_misc_unumber_parse(dimension_string, 0));
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}
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