97 lines
2.4 KiB
C
97 lines
2.4 KiB
C
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/* @(#)readcap.c 1.158 09/07/10 Copyright 1995-2009 J. Schilling */
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#include <schily/mconfig.h>
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#ifndef lint
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static UConst char sccsid[] =
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"@(#)readcap.c 1.158 09/07/10 Copyright 1995-2009 J. Schilling";
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#endif
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/*
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* SCSI command functions for read capacity
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*
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* Copyright (c) 1995-2009 J. Schilling
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*/
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/*
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* The contents of this file are subject to the terms of the
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* Common Development and Distribution License, Version 1.0 only
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* (the "License"). You may not use this file except in compliance
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* with the License.
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*
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* See the file CDDL.Schily.txt in this distribution for details.
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*
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* When distributing Covered Code, include this CDDL HEADER in each
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* file and include the License file CDDL.Schily.txt from this distribution.
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*/
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#include <schily/stdio.h>
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#include <schily/standard.h>
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#include <schily/utypes.h>
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#include <schily/btorder.h>
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#include <schily/intcvt.h>
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#include <schily/schily.h>
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#include <scg/scgcmd.h>
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#include <scg/scsidefs.h>
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#include <scg/scsireg.h>
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#include <scg/scsitransp.h>
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#include "libscgcmd.h"
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EXPORT int read_capacity __PR((SCSI *scgp));
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EXPORT void print_capacity __PR((SCSI *scgp, FILE *f));
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EXPORT int
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read_capacity(scgp)
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SCSI *scgp;
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{
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register struct scg_cmd *scmd = scgp->scmd;
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fillbytes((caddr_t)scmd, sizeof (*scmd), '\0');
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scmd->addr = (caddr_t)scgp->cap;
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scmd->size = sizeof (struct scsi_capacity);
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scmd->flags = SCG_RECV_DATA|SCG_DISRE_ENA;
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scmd->cdb_len = SC_G1_CDBLEN;
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scmd->sense_len = CCS_SENSE_LEN;
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scmd->cdb.g1_cdb.cmd = 0x25; /* Read Capacity */
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scmd->cdb.g1_cdb.lun = scg_lun(scgp);
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g1_cdblen(&scmd->cdb.g1_cdb, 0); /* Full Media */
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scgp->cmdname = "read capacity";
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if (scg_cmd(scgp) < 0) {
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return (-1);
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} else {
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long cbsize;
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long cbaddr;
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/*
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* c_bsize & c_baddr are signed Int32_t
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* so we use signed int conversion here.
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*/
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cbsize = a_to_4_byte(&scgp->cap->c_bsize);
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cbaddr = a_to_4_byte(&scgp->cap->c_baddr);
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scgp->cap->c_bsize = cbsize;
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scgp->cap->c_baddr = cbaddr;
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}
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return (0);
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}
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EXPORT void
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print_capacity(scgp, f)
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SCSI *scgp;
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FILE *f;
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{
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long kb;
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long mb;
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long prmb;
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double dkb;
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dkb = (scgp->cap->c_baddr+1.0) * (scgp->cap->c_bsize/1024.0);
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kb = dkb;
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mb = dkb / 1024.0;
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prmb = dkb / 1000.0 * 1.024;
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fprintf(f, "Capacity: %ld Blocks = %ld kBytes = %ld MBytes = %ld prMB\n",
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(long)scgp->cap->c_baddr+1, kb, mb, prmb);
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fprintf(f, "Sectorsize: %ld Bytes\n", (long)scgp->cap->c_bsize);
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}
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