home *** CD-ROM | disk | FTP | other *** search
- /*
- * Copyright (c) 2006-2007 Douglas Gilbert.
- * 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, 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.
- * 3. The name of the author may not be used to endorse or promote products
- * derived from this software without specific prior written permission.
- *
- * 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.
- *
- */
-
- #include <unistd.h>
- #include <fcntl.h>
- #include <stdio.h>
- #include <stdlib.h>
- #include <string.h>
- #include <errno.h>
- #include <sys/ioctl.h>
- #include <sys/types.h>
- #include <sys/stat.h>
- #include "sg_lib.h"
- #include "sg_io_linux.h"
-
- /* This program uses a ATA PASS-THROUGH (16) SCSI command to package
- an ATA IDENTIFY DEVICE (A1h) command. If the '-p' option is given,
- it will package an ATA IDENTIFY PACKET DEVICE (Ech) instead (for
- ATAPI device like cd/dvd drives) See http://www.t10.org
- SAT draft at time of writing: sat-r08a.pdf
-
- Invocation: sg__sat_identify [-p] [-v] [-V] <device>
-
- With SAT, the user can find out whether a device is an ATA disk or
- an ATAPI device. The ATA Information VPD page contains a "command
- code" field in byte 56. Its values are either ECh for a (s/p)ATA
- disk, A1h for a (s/p)ATAPI device, or 0 for unknown.
-
- */
-
- #define SAT_ATA_PASS_THROUGH16 0x85
- #define SAT_ATA_PASS_THROUGH16_LEN 16
- #define SAT_ATA_RETURN_DESC 9 /* ATA Return (sense) Descriptor */
-
- #define ATA_IDENTIFY_DEVICE 0xec
- #define ATA_IDENTIFY_PACKET_DEVICE 0xa1
- #define ID_RESPONSE_LEN 512
-
- #define EBUFF_SZ 256
-
- static char * version_str = "1.02 20070130";
-
- static void usage()
- {
- fprintf(stderr, "Usage: "
- "sg__sat_identify [-p] [-v] [-V] <device>\n"
- " where: -p do IDENTIFY PACKET DEVICE (def: IDENTIFY "
- "DEVICE) command\n"
- " -v increase verbosity\n"
- " -V print version string and exit\n\n"
- "Performs a IDENTIFY (PACKET) DEVICE ATA command via a SAT "
- "pass through\n");
- }
-
- int main(int argc, char * argv[])
- {
- int sg_fd, k, ok;
- unsigned char aptCmdBlk[SAT_ATA_PASS_THROUGH16_LEN] =
- {SAT_ATA_PASS_THROUGH16, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0};
- sg_io_hdr_t io_hdr;
- char * file_name = 0;
- char ebuff[EBUFF_SZ];
- unsigned char inBuff[ID_RESPONSE_LEN];
- unsigned char sense_buffer[32];
- int do_packet = 0;
- int verbose = 0;
- int extend = 0;
- int chk_cond = 0; /* set to 1 to read register(s) back */
- int protocol = 4; /* PIO data-in */
- int t_dir = 1; /* 0 -> to device, 1 -> from device */
- int byte_block = 1; /* 0 -> bytes, 1 -> 512 byte blocks */
- int t_length = 2; /* 0 -> no data transferred, 2 -> sector count */
- const unsigned char * cucp;
-
- memset(inBuff, 0, sizeof(inBuff));
- for (k = 1; k < argc; ++k) {
- if (0 == strcmp(argv[k], "-p"))
- ++do_packet;
- else if (0 == strcmp(argv[k], "-v"))
- ++verbose;
- else if (0 == strcmp(argv[k], "-vv"))
- verbose += 2;
- else if (0 == strcmp(argv[k], "-vvv"))
- verbose += 3;
- else if (0 == strcmp(argv[k], "-V")) {
- fprintf(stderr, "version: %s\n", version_str);
- exit(0);
- } else if (*argv[k] == '-') {
- printf("Unrecognized switch: %s\n", argv[k]);
- file_name = 0;
- break;
- }
- else if (0 == file_name)
- file_name = argv[k];
- else {
- printf("too many arguments\n");
- file_name = 0;
- break;
- }
- }
- if (0 == file_name) {
- usage();
- return 1;
- }
-
- if ((sg_fd = open(file_name, O_RDWR)) < 0) {
- snprintf(ebuff, EBUFF_SZ,
- "sg__sat_identify: error opening file: %s", file_name);
- perror(ebuff);
- return 1;
- }
-
- /* Prepare ATA PASS-THROUGH COMMAND (16) command */
- aptCmdBlk[6] = 1; /* sector count */
- aptCmdBlk[14] = (do_packet ? ATA_IDENTIFY_PACKET_DEVICE :
- ATA_IDENTIFY_DEVICE);
- aptCmdBlk[1] = (protocol << 1) | extend;
- aptCmdBlk[2] = (chk_cond << 5) | (t_dir << 3) |
- (byte_block << 2) | t_length;
- if (verbose) {
- fprintf(stderr, " ata pass through(16) cdb: ");
- for (k = 0; k < SAT_ATA_PASS_THROUGH16_LEN; ++k)
- fprintf(stderr, "%02x ", aptCmdBlk[k]);
- fprintf(stderr, "\n");
- }
-
- memset(&io_hdr, 0, sizeof(sg_io_hdr_t));
- io_hdr.interface_id = 'S';
- io_hdr.cmd_len = sizeof(aptCmdBlk);
- /* io_hdr.iovec_count = 0; */ /* memset takes care of this */
- io_hdr.mx_sb_len = sizeof(sense_buffer);
- io_hdr.dxfer_direction = SG_DXFER_FROM_DEV;
- io_hdr.dxfer_len = ID_RESPONSE_LEN;
- io_hdr.dxferp = inBuff;
- io_hdr.cmdp = aptCmdBlk;
- io_hdr.sbp = sense_buffer;
- io_hdr.timeout = 20000; /* 20000 millisecs == 20 seconds */
- /* io_hdr.flags = 0; */ /* take defaults: indirect IO, etc */
- /* io_hdr.pack_id = 0; */
- /* io_hdr.usr_ptr = NULL; */
-
- if (ioctl(sg_fd, SG_IO, &io_hdr) < 0) {
- perror("sg__sat_identify: SG_IO ioctl error");
- close(sg_fd);
- return 1;
- }
-
- /* now for the error processing */
- ok = 0;
- switch (sg_err_category3(&io_hdr)) {
- case SG_LIB_CAT_CLEAN:
- ok = 1;
- break;
- case SG_LIB_CAT_RECOVERED:
- if (verbose)
- sg_chk_n_print3(">>> ATA_16 command", &io_hdr, 1);
- /* check for ATA Return Descriptor */
- cucp = sg_scsi_sense_desc_find(io_hdr.sbp, io_hdr.sb_len_wr,
- SAT_ATA_RETURN_DESC);
- if (cucp && (cucp[3])) {
- if (cucp[3] & 0x4) {
- printf("error in returned FIS: aborted command\n");
- printf(" try again with%s '-p' option\n",
- (do_packet ? "out" : ""));
- break;
- }
- }
- ok = 1; /* not sure what is happening so output response */
- if (0 == verbose) {
- printf(">>> Recovered error on ATA_16, may have failed\n");
- printf(" Add '-v' for more information\n");
- }
- break;
- default: /* won't bother decoding other categories */
- sg_chk_n_print3("ATA_16 command error", &io_hdr, 1);
- break;
- }
-
- if (ok) { /* output result if it is available */
- printf("Response for IDENTIFY %sDEVICE ATA command:\n",
- (do_packet ? "PACKET " : ""));
- dWordHex((const unsigned short *)inBuff, 256, 0,
- sg_is_big_endian());
- }
-
- close(sg_fd);
- return 0;
- }
-