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/* Copyright 2013 Baruch Even
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
#include "scsicmd.h"
#include "main.h"
#include <stdio.h>
#include <memory.h>
#include <errno.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <scsi/sg.h>
#include <inttypes.h>
void do_command(int fd)
{
unsigned char cdb[32];
unsigned char buf[512] ;
unsigned cdb_len = cdb_read_capacity_16(cdb, sizeof(buf));
bool ret = submit_cmd(fd, cdb, cdb_len, buf, sizeof(buf), SG_DXFER_FROM_DEV);
if (!ret) {
fprintf(stderr, "Failed to submit command\n");
return;
}
unsigned char *sense = NULL;
unsigned sense_len = 0;
unsigned buf_len = 0;
ret = read_response_buf(fd, &sense, &sense_len, &buf_len);
if (sense) {
printf("error while reading response buffer, nothing to show\n");
return;
}
printf("Read %u bytes\n", buf_len);
uint64_t max_lba;
uint32_t block_size;
bool prot_enable;
unsigned p_type;
unsigned p_i_exponent;
unsigned logical_blocks_per_physical_block_exponent;
bool thin_provisioning_enabled;
bool thin_provisioning_zero;
unsigned lowest_aligned_lba;
bool parsed = parse_read_capacity_16(buf, buf_len, &max_lba, &block_size, &prot_enable,
&p_type, &p_i_exponent, &logical_blocks_per_physical_block_exponent,
&thin_provisioning_enabled, &thin_provisioning_zero, &lowest_aligned_lba);
if (!parsed) {
printf("Failed to parse read capacity buffer\n");
return;
}
printf("Max LBA: %"PRIu64"\nBlock size: %u\n", max_lba, block_size);
printf("Protection enabled: %s\n", prot_enable ? "true" : "false");
printf("Protection type: %u\n", p_type);
printf("Protection exponent: %u\n", p_i_exponent);
printf("LBAs per block exponent: %u\n", logical_blocks_per_physical_block_exponent);
printf("Thin provisioning enabled: %s\n", thin_provisioning_enabled ? "true" : "false");
printf("Thin provisoning zeroes: %s\n", thin_provisioning_zero ? "true" : "false");
printf("Lowest aligned LBA: %u\n", lowest_aligned_lba);
return;
}
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