217 lines
7.6 KiB
C
217 lines
7.6 KiB
C
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/*
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* Copyright (c) 2006-2018 Douglas Gilbert.
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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. 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 AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR 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, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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*/
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#include <unistd.h>
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#include <fcntl.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <stdint.h>
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#include <string.h>
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#include <errno.h>
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#include <sys/ioctl.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include "sg_lib.h"
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#include "sg_io_linux.h"
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/* This program uses a ATA PASS-THROUGH (16) SCSI command to package
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an ATA IDENTIFY DEVICE (A1h) command. If the '-p' option is given,
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it will package an ATA IDENTIFY PACKET DEVICE (Ech) instead (for
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ATAPI device like cd/dvd drives) See http://www.t10.org
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SAT draft at time of writing: sat-r08a.pdf
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Invocation: sg__sat_identify [-p] [-v] [-V] <device>
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With SAT, the user can find out whether a device is an ATA disk or
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an ATAPI device. The ATA Information VPD page contains a "command
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code" field in byte 56. Its values are either ECh for a (s/p)ATA
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disk, A1h for a (s/p)ATAPI device, or 0 for unknown.
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*/
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#define SAT_ATA_PASS_THROUGH16 0x85
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#define SAT_ATA_PASS_THROUGH16_LEN 16
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#define SAT_ATA_RETURN_DESC 9 /* ATA Return (sense) Descriptor */
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#define ATA_IDENTIFY_DEVICE 0xec
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#define ATA_IDENTIFY_PACKET_DEVICE 0xa1
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#define ID_RESPONSE_LEN 512
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#define EBUFF_SZ 256
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static char * version_str = "1.04 20180220";
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static void usage()
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{
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fprintf(stderr, "Usage: "
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"sg__sat_identify [-p] [-v] [-V] <device>\n"
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" where: -p do IDENTIFY PACKET DEVICE (def: IDENTIFY "
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"DEVICE) command\n"
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" -v increase verbosity\n"
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" -V print version string and exit\n\n"
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"Performs a IDENTIFY (PACKET) DEVICE ATA command via a SAT "
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"pass through\n");
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}
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int main(int argc, char * argv[])
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{
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int sg_fd, k, ok;
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uint8_t apt_cdb[SAT_ATA_PASS_THROUGH16_LEN] =
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{SAT_ATA_PASS_THROUGH16, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0};
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sg_io_hdr_t io_hdr;
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char * file_name = 0;
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char ebuff[EBUFF_SZ];
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uint8_t inBuff[ID_RESPONSE_LEN];
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uint8_t sense_buffer[32];
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int do_packet = 0;
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int verbose = 0;
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int extend = 0;
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int chk_cond = 0; /* set to 1 to read register(s) back */
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int protocol = 4; /* PIO data-in */
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int t_dir = 1; /* 0 -> to device, 1 -> from device */
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int byte_block = 1; /* 0 -> bytes, 1 -> 512 byte blocks */
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int t_length = 2; /* 0 -> no data transferred, 2 -> sector count */
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const uint8_t * cucp;
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memset(inBuff, 0, sizeof(inBuff));
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for (k = 1; k < argc; ++k) {
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if (0 == strcmp(argv[k], "-p"))
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++do_packet;
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else if (0 == strcmp(argv[k], "-v"))
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++verbose;
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else if (0 == strcmp(argv[k], "-vv"))
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verbose += 2;
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else if (0 == strcmp(argv[k], "-vvv"))
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verbose += 3;
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else if (0 == strcmp(argv[k], "-V")) {
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fprintf(stderr, "version: %s\n", version_str);
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exit(0);
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} else if (*argv[k] == '-') {
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printf("Unrecognized switch: %s\n", argv[k]);
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file_name = 0;
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break;
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}
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else if (0 == file_name)
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file_name = argv[k];
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else {
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printf("too many arguments\n");
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file_name = 0;
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break;
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}
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}
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if (0 == file_name) {
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usage();
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return 1;
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}
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if ((sg_fd = open(file_name, O_RDWR)) < 0) {
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snprintf(ebuff, EBUFF_SZ,
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"sg__sat_identify: error opening file: %s", file_name);
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perror(ebuff);
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return 1;
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}
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/* Prepare ATA PASS-THROUGH COMMAND (16) command */
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apt_cdb[6] = 1; /* sector count */
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apt_cdb[14] = (do_packet ? ATA_IDENTIFY_PACKET_DEVICE :
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ATA_IDENTIFY_DEVICE);
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apt_cdb[1] = (protocol << 1) | extend;
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apt_cdb[2] = (chk_cond << 5) | (t_dir << 3) |
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(byte_block << 2) | t_length;
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if (verbose) {
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fprintf(stderr, " ata pass through(16) cdb: ");
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for (k = 0; k < SAT_ATA_PASS_THROUGH16_LEN; ++k)
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fprintf(stderr, "%02x ", apt_cdb[k]);
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fprintf(stderr, "\n");
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}
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memset(&io_hdr, 0, sizeof(sg_io_hdr_t));
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io_hdr.interface_id = 'S';
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io_hdr.cmd_len = sizeof(apt_cdb);
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/* io_hdr.iovec_count = 0; */ /* memset takes care of this */
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io_hdr.mx_sb_len = sizeof(sense_buffer);
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io_hdr.dxfer_direction = SG_DXFER_FROM_DEV;
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io_hdr.dxfer_len = ID_RESPONSE_LEN;
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io_hdr.dxferp = inBuff;
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io_hdr.cmdp = apt_cdb;
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io_hdr.sbp = sense_buffer;
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io_hdr.timeout = 20000; /* 20000 millisecs == 20 seconds */
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/* io_hdr.flags = 0; */ /* take defaults: indirect IO, etc */
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/* io_hdr.pack_id = 0; */
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/* io_hdr.usr_ptr = NULL; */
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if (ioctl(sg_fd, SG_IO, &io_hdr) < 0) {
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perror("sg__sat_identify: SG_IO ioctl error");
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close(sg_fd);
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return 1;
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}
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/* now for the error processing */
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ok = 0;
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switch (sg_err_category3(&io_hdr)) {
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case SG_LIB_CAT_CLEAN:
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ok = 1;
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break;
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case SG_LIB_CAT_RECOVERED:
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if (verbose)
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sg_chk_n_print3(">>> ATA_16 command", &io_hdr, 1);
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/* check for ATA Return Descriptor */
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cucp = sg_scsi_sense_desc_find(io_hdr.sbp, io_hdr.sb_len_wr,
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SAT_ATA_RETURN_DESC);
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if (cucp && (cucp[3])) {
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if (cucp[3] & 0x4) {
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printf("error in returned FIS: aborted command\n");
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printf(" try again with%s '-p' option\n",
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(do_packet ? "out" : ""));
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break;
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}
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}
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ok = 1; /* not sure what is happening so output response */
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if (0 == verbose) {
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printf(">>> Recovered error on ATA_16, may have failed\n");
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printf(" Add '-v' for more information\n");
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}
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break;
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default: /* won't bother decoding other categories */
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sg_chk_n_print3("ATA_16 command error", &io_hdr, 1);
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break;
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}
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if (ok) { /* output result if it is available */
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printf("Response for IDENTIFY %sDEVICE ATA command:\n",
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(do_packet ? "PACKET " : ""));
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dWordHex((const unsigned short *)inBuff, 256, 0,
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sg_is_big_endian());
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}
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close(sg_fd);
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return 0;
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}
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