1 /*
2 * Copyright (c) 2006-2007 Douglas Gilbert.
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. The name of the author may not be used to endorse or promote products
14 * derived from this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 *
28 */
29
30 #include <unistd.h>
31 #include <fcntl.h>
32 #include <stdio.h>
33 #include <stdlib.h>
34 #include <string.h>
35 #include <errno.h>
36 #include <sys/ioctl.h>
37 #include <sys/types.h>
38 #include <sys/stat.h>
39 #include "sg_lib.h"
40 #include "sg_io_linux.h"
41
42 /* This program performs a ATA PASS-THROUGH (16) SCSI command in order
43 to perform an ATA SMART/READ DATA command. See http://www.t10.org
44 SAT draft at time of writing: sat-r08.pdf
45
46 Invocation: sg_sat_smart_rd_data [-v] [-V] <device>
47
48 */
49
50 #define SAT_ATA_PASS_THROUGH16 0x85
51 #define SAT_ATA_PASS_THROUGH16_LEN 16
52 #define SAT_ATA_RETURN_DESC 9 /* ATA Return (sense) Descriptor */
53
54 #define ATA_SMART 0xb0
55 #define ATA_SMART_READ_DATA 0xd0
56 #define SMART_READ_DATA_RESPONSE_LEN 512
57
58 #define EBUFF_SZ 256
59
60 static char * version_str = "1.02 20070130";
61
main(int argc,char * argv[])62 int main(int argc, char * argv[])
63 {
64 int sg_fd, k, ok;
65 unsigned char aptCmdBlk[SAT_ATA_PASS_THROUGH16_LEN] =
66 {SAT_ATA_PASS_THROUGH16, 0, 0, 0, 0, 0, 0, 0,
67 0, 0, 0, 0, 0, 0, 0, 0};
68 sg_io_hdr_t io_hdr;
69 char * file_name = 0;
70 char ebuff[EBUFF_SZ];
71 unsigned char inBuff[SMART_READ_DATA_RESPONSE_LEN];
72 unsigned char sense_buffer[32];
73 int verbose = 0;
74 int extend = 0;
75 int chk_cond = 0; /* set to 1 to read register(s) back */
76 int protocol = 4; /* PIO data-in */
77 int t_dir = 1; /* 0 -> to device, 1 -> from device */
78 int byte_block = 1; /* 0 -> bytes, 1 -> 512 byte blocks */
79 int t_length = 2; /* 0 -> no data transferred, 2 -> sector count */
80 const unsigned char * ucp = NULL;
81
82 for (k = 1; k < argc; ++k) {
83 if (0 == strcmp(argv[k], "-v"))
84 ++verbose;
85 else if (0 == strcmp(argv[k], "-vv"))
86 verbose += 2;
87 else if (0 == strcmp(argv[k], "-vvv"))
88 verbose += 3;
89 else if (0 == strcmp(argv[k], "-V")) {
90 fprintf(stderr, "version: %s\n", version_str);
91 exit(0);
92 } else if (*argv[k] == '-') {
93 printf("Unrecognized switch: %s\n", argv[k]);
94 file_name = 0;
95 break;
96 }
97 else if (0 == file_name)
98 file_name = argv[k];
99 else {
100 printf("too many arguments\n");
101 file_name = 0;
102 break;
103 }
104 }
105 if (0 == file_name) {
106 printf("Usage: 'sg_sat_smart_rd_data [-v] [-V] <device>'\n");
107 return 1;
108 }
109
110 if ((sg_fd = open(file_name, O_RDWR)) < 0) {
111 snprintf(ebuff, EBUFF_SZ,
112 "sg_sat_smart_rd_data: error opening file: %s", file_name);
113 perror(ebuff);
114 return 1;
115 }
116
117 /* Prepare ATA PASS-THROUGH COMMAND (16) command */
118 aptCmdBlk[4] = ATA_SMART_READ_DATA; /* feature (7:0) */
119 aptCmdBlk[6] = 1; /* number of block (sector count) */
120 aptCmdBlk[10] = 0x4f; /* lba_mid (7:0) */
121 aptCmdBlk[12] = 0xc2; /* lba_high (7:0) */
122 aptCmdBlk[14] = ATA_SMART;
123 aptCmdBlk[1] = (protocol << 1) | extend;
124 aptCmdBlk[2] = (chk_cond << 5) | (t_dir << 3) |
125 (byte_block << 2) | t_length;
126 if (verbose) {
127 fprintf(stderr, " ata pass through(16) cdb: ");
128 for (k = 0; k < SAT_ATA_PASS_THROUGH16_LEN; ++k)
129 fprintf(stderr, "%02x ", aptCmdBlk[k]);
130 fprintf(stderr, "\n");
131 }
132
133 memset(&io_hdr, 0, sizeof(sg_io_hdr_t));
134 io_hdr.interface_id = 'S';
135 io_hdr.cmd_len = sizeof(aptCmdBlk);
136 /* io_hdr.iovec_count = 0; */ /* memset takes care of this */
137 io_hdr.mx_sb_len = sizeof(sense_buffer);
138 io_hdr.dxfer_direction = SG_DXFER_FROM_DEV;
139 io_hdr.dxfer_len = SMART_READ_DATA_RESPONSE_LEN;
140 io_hdr.dxferp = inBuff;
141 io_hdr.cmdp = aptCmdBlk;
142 io_hdr.sbp = sense_buffer;
143 io_hdr.timeout = 20000; /* 20000 millisecs == 20 seconds */
144 /* io_hdr.flags = 0; */ /* take defaults: indirect IO, etc */
145 /* io_hdr.pack_id = 0; */
146 /* io_hdr.usr_ptr = NULL; */
147
148 if (ioctl(sg_fd, SG_IO, &io_hdr) < 0) {
149 perror("sg_sat_smart_rd_data: SG_IO ioctl error");
150 close(sg_fd);
151 return 1;
152 }
153
154 /* now for the error processing */
155 ok = 0;
156 switch (sg_err_category3(&io_hdr)) {
157 case SG_LIB_CAT_CLEAN:
158 ok = 1;
159 break;
160 case SG_LIB_CAT_RECOVERED:
161 ucp = sg_scsi_sense_desc_find(sense_buffer, sizeof(sense_buffer),
162 SAT_ATA_RETURN_DESC);
163 if (NULL == ucp) {
164 if (verbose > 1)
165 printf("ATA Return Descriptor expected in sense but not "
166 "found\n");
167 sg_chk_n_print3("ATA_16 command error", &io_hdr, 1);
168 } else if (verbose)
169 sg_chk_n_print3("ATA Return Descriptor", &io_hdr, 1);
170 if (ucp && ucp[3])
171 printf("error=0x%x, status=0x%x\n", ucp[3], ucp[13]);
172 else
173 ok = 1;
174 break;
175 default: /* won't bother decoding other categories */
176 sg_chk_n_print3("ATA_16 command error", &io_hdr, 1);
177 break;
178 }
179
180 if (ok) { /* output result if it is available */
181 printf("Response:\n");
182 dWordHex((const unsigned short *)inBuff, 256, 0,
183 sg_is_big_endian());
184 }
185
186 close(sg_fd);
187 return 0;
188 }
189