/
smc_parse.c
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/
smc_parse.c
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/*
* Copyright (c) 1998,1999,2000
* Traakan, Inc., Los Altos, CA
* 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 unmodified, 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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.
*/
/*
* Project: NDMJOB
* Ident: $Id: $
*
* Description:
*
*/
#include "smc_priv.h"
#define WITH(P,V,T) { T * V = (T *) P;
#define ENDWITH }
int
smc_parse_volume_tag (
struct smc_raw_volume_tag *raw,
struct smc_volume_tag *vtag)
{
int i;
bzero (vtag, sizeof *vtag);
for (i = 31; i >= 0 && raw->volume_id[i] == ' '; i--)
continue;
for (; i >= 0; i--)
vtag->volume_id[i] = raw->volume_id[i];
vtag->volume_seq = SMC_GET2(raw->volume_seq);
return 0;
}
int
smc_parse_element_status_data (
char * raw,
unsigned raw_len,
struct smc_element_descriptor elem_desc[],
unsigned max_elem_desc)
{
unsigned char * p = (unsigned char *)raw;
unsigned char * raw_end = p + raw_len;
unsigned int n_elem = 0;
bzero (elem_desc, sizeof elem_desc[0] * max_elem_desc);
WITH(p, esdh, struct smc_raw_element_status_data_header)
unsigned byte_count = SMC_GET3(esdh->byte_count);
if (raw_len > byte_count+8) {
/* probably an error, but press on */
raw_len = byte_count+8;
}
raw_end = p + raw_len;
ENDWITH
p += 8;
while (p+8 < raw_end) { /* +8 for sizeof *esph */
WITH(p, esph, struct smc_raw_element_status_page_header)
unsigned desc_size = SMC_GET2(esph->elem_desc_len);
unsigned byte_count = SMC_GET3(esph->byte_count);
unsigned elem_type = esph->element_type;
unsigned char * pgend = p + byte_count + 8;
int PVolTag = 0;
int AVolTag = 0;
if (pgend > raw_end) {
/* malformed, really, but punt */
pgend = raw_end;
}
if (esph->flag1 & SMC_RAW_ESP_F1_PVolTag)
PVolTag = 1;
if (esph->flag1 & SMC_RAW_ESP_F1_AVolTag)
AVolTag = 1;
p += 8;
for (;p + desc_size <= pgend; p += desc_size) {
struct smc_element_descriptor *edp;
if (n_elem >= max_elem_desc) {
/* bust out */
goto done;
}
edp = &elem_desc[n_elem++];
WITH (p, red, struct smc_raw_element_descriptor)
unsigned char *p2;
edp->element_type_code = elem_type;
edp->element_address = SMC_GET2(red->element_address);
edp->PVolTag = PVolTag;
edp->AVolTag = AVolTag;
#define FLAG(RAWMEM,BIT,MEM) if (red->RAWMEM & BIT) edp->MEM = 1;
FLAG(flags2, SMC_RAW_ED_F2_Full, Full);
FLAG(flags2, SMC_RAW_ED_F2_ImpExp, ImpExp);
FLAG(flags2, SMC_RAW_ED_F2_Except, Except);
FLAG(flags2, SMC_RAW_ED_F2_Access, Access);
FLAG(flags2, SMC_RAW_ED_F2_ExEnab, ExEnab);
FLAG(flags2, SMC_RAW_ED_F2_InEnab, InEnab);
edp->asc = red->asc;
edp->ascq = red->ascq;
edp->scsi_lun = red->flags6 & 7;
FLAG(flags6, SMC_RAW_ED_F6_LU_valid, LU_valid);
FLAG(flags6, SMC_RAW_ED_F6_ID_valid, ID_valid);
FLAG(flags6, SMC_RAW_ED_F6_Not_bus, Not_bus);
edp->scsi_sid = red->scsi_sid;
FLAG(flags9, SMC_RAW_ED_F9_Invert, Invert);
FLAG(flags9, SMC_RAW_ED_F9_SValid, SValid);
#undef FLAG
edp->src_se_addr = SMC_GET2(red->src_se_addr);
p2 = (unsigned char *) &red->primary_vol_tag;
if (edp->PVolTag) {
smc_parse_volume_tag ((void*)p2,
&edp->primary_vol_tag);
p2 += SMC_VOL_TAG_LEN;
}
if (edp->AVolTag) {
p2 = (unsigned char *) &red->alternate_vol_tag;
smc_parse_volume_tag ((void*)p2,
&edp->alternate_vol_tag);
p2 += SMC_VOL_TAG_LEN;
}
p2 += 4; /* resv84 */
/* p2 ready for vendor_specific */
ENDWITH
}
p = pgend;
ENDWITH
}
done:
return n_elem;
}
int
smc_parse_element_address_assignment (
struct smc_raw_element_address_assignment_page *raw,
struct smc_element_address_assignment *eaa)
{
eaa->mte_addr = SMC_GET2(raw->mte_addr);
eaa->mte_count = SMC_GET2(raw->mte_count);
eaa->se_addr = SMC_GET2(raw->se_addr);
eaa->se_count = SMC_GET2(raw->se_count);
eaa->iee_addr = SMC_GET2(raw->iee_addr);
eaa->iee_count = SMC_GET2(raw->iee_count);
eaa->dte_addr = SMC_GET2(raw->dte_addr);
eaa->dte_count = SMC_GET2(raw->dte_count);
return 0;
}