1 /* SPDX-License-Identifier: GPL-2.0-or-later */
2 /*
3 * ata_id - reads product/serial number from ATA drives
4 *
5 * Copyright © 2009-2010 David Zeuthen <zeuthen@gmail.com>
6 */
7
8 #include <ctype.h>
9 #include <errno.h>
10 #include <fcntl.h>
11 #include <getopt.h>
12 #include <linux/bsg.h>
13 #include <linux/hdreg.h>
14 #include <scsi/scsi.h>
15 #include <scsi/scsi_ioctl.h>
16 #include <scsi/sg.h>
17 #include <stdint.h>
18 #include <stdio.h>
19 #include <stdlib.h>
20 #include <string.h>
21 #include <sys/ioctl.h>
22 #include <sys/stat.h>
23 #include <sys/types.h>
24 #include <unistd.h>
25
26 #include "device-nodes.h"
27 #include "fd-util.h"
28 #include "log.h"
29 #include "memory-util.h"
30 #include "udev-util.h"
31
32 #define COMMAND_TIMEOUT_MSEC (30 * 1000)
33
disk_scsi_inquiry_command(int fd,void * buf,size_t buf_len)34 static int disk_scsi_inquiry_command(
35 int fd,
36 void *buf,
37 size_t buf_len) {
38
39 uint8_t cdb[6] = {
40 /* INQUIRY, see SPC-4 section 6.4 */
41 [0] = 0x12, /* OPERATION CODE: INQUIRY */
42 [3] = (buf_len >> 8), /* ALLOCATION LENGTH */
43 [4] = (buf_len & 0xff),
44 };
45 uint8_t sense[32] = {};
46 struct sg_io_v4 io_v4 = {
47 .guard = 'Q',
48 .protocol = BSG_PROTOCOL_SCSI,
49 .subprotocol = BSG_SUB_PROTOCOL_SCSI_CMD,
50 .request_len = sizeof(cdb),
51 .request = (uintptr_t) cdb,
52 .max_response_len = sizeof(sense),
53 .response = (uintptr_t) sense,
54 .din_xfer_len = buf_len,
55 .din_xferp = (uintptr_t) buf,
56 .timeout = COMMAND_TIMEOUT_MSEC,
57 };
58 int ret;
59
60 ret = ioctl(fd, SG_IO, &io_v4);
61 if (ret != 0) {
62 /* could be that the driver doesn't do version 4, try version 3 */
63 if (errno == EINVAL) {
64 struct sg_io_hdr io_hdr = {
65 .interface_id = 'S',
66 .cmdp = (unsigned char*) cdb,
67 .cmd_len = sizeof (cdb),
68 .dxferp = buf,
69 .dxfer_len = buf_len,
70 .sbp = sense,
71 .mx_sb_len = sizeof(sense),
72 .dxfer_direction = SG_DXFER_FROM_DEV,
73 .timeout = COMMAND_TIMEOUT_MSEC,
74 };
75
76 ret = ioctl(fd, SG_IO, &io_hdr);
77 if (ret != 0)
78 return ret;
79
80 /* even if the ioctl succeeds, we need to check the return value */
81 if (!(io_hdr.status == 0 &&
82 io_hdr.host_status == 0 &&
83 io_hdr.driver_status == 0)) {
84 errno = EIO;
85 return -1;
86 }
87 } else
88 return ret;
89 }
90
91 /* even if the ioctl succeeds, we need to check the return value */
92 if (!(io_v4.device_status == 0 &&
93 io_v4.transport_status == 0 &&
94 io_v4.driver_status == 0)) {
95 errno = EIO;
96 return -1;
97 }
98
99 return 0;
100 }
101
disk_identify_command(int fd,void * buf,size_t buf_len)102 static int disk_identify_command(
103 int fd,
104 void *buf,
105 size_t buf_len) {
106
107 uint8_t cdb[12] = {
108 /*
109 * ATA Pass-Through 12 byte command, as described in
110 *
111 * T10 04-262r8 ATA Command Pass-Through
112 *
113 * from http://www.t10.org/ftp/t10/document.04/04-262r8.pdf
114 */
115 [0] = 0xa1, /* OPERATION CODE: 12 byte pass through */
116 [1] = 4 << 1, /* PROTOCOL: PIO Data-in */
117 [2] = 0x2e, /* OFF_LINE=0, CK_COND=1, T_DIR=1, BYT_BLOK=1, T_LENGTH=2 */
118 [3] = 0, /* FEATURES */
119 [4] = 1, /* SECTORS */
120 [5] = 0, /* LBA LOW */
121 [6] = 0, /* LBA MID */
122 [7] = 0, /* LBA HIGH */
123 [8] = 0 & 0x4F, /* SELECT */
124 [9] = 0xEC, /* Command: ATA IDENTIFY DEVICE */
125 };
126 uint8_t sense[32] = {};
127 uint8_t *desc = sense + 8;
128 struct sg_io_v4 io_v4 = {
129 .guard = 'Q',
130 .protocol = BSG_PROTOCOL_SCSI,
131 .subprotocol = BSG_SUB_PROTOCOL_SCSI_CMD,
132 .request_len = sizeof(cdb),
133 .request = (uintptr_t) cdb,
134 .max_response_len = sizeof(sense),
135 .response = (uintptr_t) sense,
136 .din_xfer_len = buf_len,
137 .din_xferp = (uintptr_t) buf,
138 .timeout = COMMAND_TIMEOUT_MSEC,
139 };
140 int ret;
141
142 ret = ioctl(fd, SG_IO, &io_v4);
143 if (ret != 0) {
144 /* could be that the driver doesn't do version 4, try version 3 */
145 if (errno == EINVAL) {
146 struct sg_io_hdr io_hdr = {
147 .interface_id = 'S',
148 .cmdp = (unsigned char*) cdb,
149 .cmd_len = sizeof (cdb),
150 .dxferp = buf,
151 .dxfer_len = buf_len,
152 .sbp = sense,
153 .mx_sb_len = sizeof (sense),
154 .dxfer_direction = SG_DXFER_FROM_DEV,
155 .timeout = COMMAND_TIMEOUT_MSEC,
156 };
157
158 ret = ioctl(fd, SG_IO, &io_hdr);
159 if (ret != 0)
160 return ret;
161 } else
162 return ret;
163 }
164
165 if (!(sense[0] == 0x72 && desc[0] == 0x9 && desc[1] == 0x0c) &&
166 !(sense[0] == 0x70 && sense[12] == 0x00 && sense[13] == 0x1d)) {
167 errno = EIO;
168 return -1;
169 }
170
171 return 0;
172 }
173
disk_identify_packet_device_command(int fd,void * buf,size_t buf_len)174 static int disk_identify_packet_device_command(
175 int fd,
176 void *buf,
177 size_t buf_len) {
178
179 uint8_t cdb[16] = {
180 /*
181 * ATA Pass-Through 16 byte command, as described in
182 *
183 * T10 04-262r8 ATA Command Pass-Through
184 *
185 * from http://www.t10.org/ftp/t10/document.04/04-262r8.pdf
186 */
187 [0] = 0x85, /* OPERATION CODE: 16 byte pass through */
188 [1] = 4 << 1, /* PROTOCOL: PIO Data-in */
189 [2] = 0x2e, /* OFF_LINE=0, CK_COND=1, T_DIR=1, BYT_BLOK=1, T_LENGTH=2 */
190 [3] = 0, /* FEATURES */
191 [4] = 0, /* FEATURES */
192 [5] = 0, /* SECTORS */
193 [6] = 1, /* SECTORS */
194 [7] = 0, /* LBA LOW */
195 [8] = 0, /* LBA LOW */
196 [9] = 0, /* LBA MID */
197 [10] = 0, /* LBA MID */
198 [11] = 0, /* LBA HIGH */
199 [12] = 0, /* LBA HIGH */
200 [13] = 0, /* DEVICE */
201 [14] = 0xA1, /* Command: ATA IDENTIFY PACKET DEVICE */
202 [15] = 0, /* CONTROL */
203 };
204 uint8_t sense[32] = {};
205 uint8_t *desc = sense + 8;
206 struct sg_io_v4 io_v4 = {
207 .guard = 'Q',
208 .protocol = BSG_PROTOCOL_SCSI,
209 .subprotocol = BSG_SUB_PROTOCOL_SCSI_CMD,
210 .request_len = sizeof (cdb),
211 .request = (uintptr_t) cdb,
212 .max_response_len = sizeof (sense),
213 .response = (uintptr_t) sense,
214 .din_xfer_len = buf_len,
215 .din_xferp = (uintptr_t) buf,
216 .timeout = COMMAND_TIMEOUT_MSEC,
217 };
218 int ret;
219
220 ret = ioctl(fd, SG_IO, &io_v4);
221 if (ret != 0) {
222 /* could be that the driver doesn't do version 4, try version 3 */
223 if (errno == EINVAL) {
224 struct sg_io_hdr io_hdr = {
225 .interface_id = 'S',
226 .cmdp = (unsigned char*) cdb,
227 .cmd_len = sizeof (cdb),
228 .dxferp = buf,
229 .dxfer_len = buf_len,
230 .sbp = sense,
231 .mx_sb_len = sizeof (sense),
232 .dxfer_direction = SG_DXFER_FROM_DEV,
233 .timeout = COMMAND_TIMEOUT_MSEC,
234 };
235
236 ret = ioctl(fd, SG_IO, &io_hdr);
237 if (ret != 0)
238 return ret;
239 } else
240 return ret;
241 }
242
243 if (!(sense[0] == 0x72 && desc[0] == 0x9 && desc[1] == 0x0c)) {
244 errno = EIO;
245 return -1;
246 }
247
248 return 0;
249 }
250
251 /**
252 * disk_identify_get_string:
253 * @identify: A block of IDENTIFY data
254 * @offset_words: Offset of the string to get, in words.
255 * @dest: Destination buffer for the string.
256 * @dest_len: Length of destination buffer, in bytes.
257 *
258 * Copies the ATA string from @identify located at @offset_words into @dest.
259 */
disk_identify_get_string(uint8_t identify[512],unsigned offset_words,char * dest,size_t dest_len)260 static void disk_identify_get_string(
261 uint8_t identify[512],
262 unsigned offset_words,
263 char *dest,
264 size_t dest_len) {
265
266 unsigned c1;
267 unsigned c2;
268
269 while (dest_len > 0) {
270 c1 = identify[offset_words * 2 + 1];
271 c2 = identify[offset_words * 2];
272 *dest = c1;
273 dest++;
274 *dest = c2;
275 dest++;
276 offset_words++;
277 dest_len -= 2;
278 }
279 }
280
disk_identify_fixup_string(uint8_t identify[512],unsigned offset_words,size_t len)281 static void disk_identify_fixup_string(
282 uint8_t identify[512],
283 unsigned offset_words,
284 size_t len) {
285 disk_identify_get_string(identify, offset_words,
286 (char *) identify + offset_words * 2, len);
287 }
288
disk_identify_fixup_uint16(uint8_t identify[512],unsigned offset_words)289 static void disk_identify_fixup_uint16 (uint8_t identify[512], unsigned offset_words) {
290 uint16_t *p;
291
292 p = (uint16_t *) identify;
293 p[offset_words] = le16toh (p[offset_words]);
294 }
295
296 /**
297 * disk_identify:
298 * @fd: File descriptor for the block device.
299 * @out_identify: Return location for IDENTIFY data.
300 * @out_is_packet_device: Return location for whether returned data is from an IDENTIFY PACKET DEVICE.
301 *
302 * Sends the IDENTIFY DEVICE or IDENTIFY PACKET DEVICE command to the
303 * device represented by @fd. If successful, then the result will be
304 * copied into @out_identify and @out_is_packet_device.
305 *
306 * This routine is based on code from libatasmart, LGPL v2.1.
307 *
308 * Returns: 0 if the data was successfully obtained, otherwise
309 * non-zero with errno set.
310 */
disk_identify(int fd,uint8_t out_identify[512],int * out_is_packet_device)311 static int disk_identify(int fd,
312 uint8_t out_identify[512],
313 int *out_is_packet_device) {
314 int ret;
315 uint8_t inquiry_buf[36];
316 int peripheral_device_type;
317 int all_nul_bytes;
318 int n;
319 int is_packet_device = 0;
320
321 /* init results */
322 memzero(out_identify, 512);
323
324 /* If we were to use ATA PASS_THROUGH (12) on an ATAPI device
325 * we could accidentally blank media. This is because MMC's BLANK
326 * command has the same op-code (0x61).
327 *
328 * To prevent this from happening we bail out if the device
329 * isn't a Direct Access Block Device, e.g. SCSI type 0x00
330 * (CD/DVD devices are type 0x05). So we send a SCSI INQUIRY
331 * command first... libata is handling this via its SCSI
332 * emulation layer.
333 *
334 * This also ensures that we're actually dealing with a device
335 * that understands SCSI commands.
336 *
337 * (Yes, it is a bit perverse that we're tunneling the ATA
338 * command through SCSI and relying on the ATA driver
339 * emulating SCSI well-enough...)
340 *
341 * (See commit 160b069c25690bfb0c785994c7c3710289179107 for
342 * the original bug-fix and see http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=556635
343 * for the original bug-report.)
344 */
345 ret = disk_scsi_inquiry_command (fd, inquiry_buf, sizeof (inquiry_buf));
346 if (ret != 0)
347 goto out;
348
349 /* SPC-4, section 6.4.2: Standard INQUIRY data */
350 peripheral_device_type = inquiry_buf[0] & 0x1f;
351 if (peripheral_device_type == 0x05)
352 {
353 is_packet_device = 1;
354 ret = disk_identify_packet_device_command(fd, out_identify, 512);
355 goto check_nul_bytes;
356 }
357 if (!IN_SET(peripheral_device_type, 0x00, 0x14)) {
358 ret = -1;
359 errno = EIO;
360 goto out;
361 }
362
363 /* OK, now issue the IDENTIFY DEVICE command */
364 ret = disk_identify_command(fd, out_identify, 512);
365 if (ret != 0)
366 goto out;
367
368 check_nul_bytes:
369 /* Check if IDENTIFY data is all NUL bytes - if so, bail */
370 all_nul_bytes = 1;
371 for (n = 0; n < 512; n++) {
372 if (out_identify[n] != '\0') {
373 all_nul_bytes = 0;
374 break;
375 }
376 }
377
378 if (all_nul_bytes) {
379 ret = -1;
380 errno = EIO;
381 goto out;
382 }
383
384 out:
385 if (out_is_packet_device)
386 *out_is_packet_device = is_packet_device;
387 return ret;
388 }
389
main(int argc,char * argv[])390 int main(int argc, char *argv[]) {
391 struct hd_driveid id;
392 union {
393 uint8_t byte[512];
394 uint16_t wyde[256];
395 } identify;
396 char model[41];
397 char model_enc[256];
398 char serial[21];
399 char revision[9];
400 const char *node = NULL;
401 int export = 0;
402 _cleanup_close_ int fd = -1;
403 uint16_t word;
404 int is_packet_device = 0;
405 static const struct option options[] = {
406 { "export", no_argument, NULL, 'x' },
407 { "help", no_argument, NULL, 'h' },
408 {}
409 };
410
411 log_set_target(LOG_TARGET_AUTO);
412 udev_parse_config();
413 log_parse_environment();
414 log_open();
415
416 for (;;) {
417 int option;
418
419 option = getopt_long(argc, argv, "xh", options, NULL);
420 if (option == -1)
421 break;
422
423 switch (option) {
424 case 'x':
425 export = 1;
426 break;
427 case 'h':
428 printf("Usage: %s [--export] [--help] <device>\n"
429 " -x,--export print values as environment keys\n"
430 " -h,--help print this help text\n\n",
431 program_invocation_short_name);
432 return 0;
433 }
434 }
435
436 node = argv[optind];
437 if (!node) {
438 log_error("no node specified");
439 return 1;
440 }
441
442 fd = open(node, O_RDONLY|O_NONBLOCK|O_CLOEXEC);
443 if (fd < 0) {
444 log_error("unable to open '%s'", node);
445 return 1;
446 }
447
448 if (disk_identify(fd, identify.byte, &is_packet_device) == 0) {
449 /*
450 * fix up only the fields from the IDENTIFY data that we are going to
451 * use and copy it into the hd_driveid struct for convenience
452 */
453 disk_identify_fixup_string(identify.byte, 10, 20); /* serial */
454 disk_identify_fixup_string(identify.byte, 23, 8); /* fwrev */
455 disk_identify_fixup_string(identify.byte, 27, 40); /* model */
456 disk_identify_fixup_uint16(identify.byte, 0); /* configuration */
457 disk_identify_fixup_uint16(identify.byte, 75); /* queue depth */
458 disk_identify_fixup_uint16(identify.byte, 76); /* SATA capabilities */
459 disk_identify_fixup_uint16(identify.byte, 82); /* command set supported */
460 disk_identify_fixup_uint16(identify.byte, 83); /* command set supported */
461 disk_identify_fixup_uint16(identify.byte, 84); /* command set supported */
462 disk_identify_fixup_uint16(identify.byte, 85); /* command set supported */
463 disk_identify_fixup_uint16(identify.byte, 86); /* command set supported */
464 disk_identify_fixup_uint16(identify.byte, 87); /* command set supported */
465 disk_identify_fixup_uint16(identify.byte, 89); /* time required for SECURITY ERASE UNIT */
466 disk_identify_fixup_uint16(identify.byte, 90); /* time required for enhanced SECURITY ERASE UNIT */
467 disk_identify_fixup_uint16(identify.byte, 91); /* current APM values */
468 disk_identify_fixup_uint16(identify.byte, 94); /* current AAM value */
469 disk_identify_fixup_uint16(identify.byte, 108); /* WWN */
470 disk_identify_fixup_uint16(identify.byte, 109); /* WWN */
471 disk_identify_fixup_uint16(identify.byte, 110); /* WWN */
472 disk_identify_fixup_uint16(identify.byte, 111); /* WWN */
473 disk_identify_fixup_uint16(identify.byte, 128); /* device lock function */
474 disk_identify_fixup_uint16(identify.byte, 217); /* nominal media rotation rate */
475 memcpy(&id, identify.byte, sizeof id);
476 } else {
477 /* If this fails, then try HDIO_GET_IDENTITY */
478 if (ioctl(fd, HDIO_GET_IDENTITY, &id) != 0) {
479 log_debug_errno(errno, "HDIO_GET_IDENTITY failed for '%s': %m", node);
480 return 2;
481 }
482 }
483
484 memcpy(model, id.model, 40);
485 model[40] = '\0';
486 encode_devnode_name(model, model_enc, sizeof(model_enc));
487 udev_replace_whitespace((char *) id.model, model, 40);
488 udev_replace_chars(model, NULL);
489 udev_replace_whitespace((char *) id.serial_no, serial, 20);
490 udev_replace_chars(serial, NULL);
491 udev_replace_whitespace((char *) id.fw_rev, revision, 8);
492 udev_replace_chars(revision, NULL);
493
494 if (export) {
495 /* Set this to convey the disk speaks the ATA protocol */
496 printf("ID_ATA=1\n");
497
498 if ((id.config >> 8) & 0x80) {
499 /* This is an ATAPI device */
500 switch ((id.config >> 8) & 0x1f) {
501 case 0:
502 printf("ID_TYPE=cd\n");
503 break;
504 case 1:
505 printf("ID_TYPE=tape\n");
506 break;
507 case 5:
508 printf("ID_TYPE=cd\n");
509 break;
510 case 7:
511 printf("ID_TYPE=optical\n");
512 break;
513 default:
514 printf("ID_TYPE=generic\n");
515 break;
516 }
517 } else
518 printf("ID_TYPE=disk\n");
519 printf("ID_BUS=ata\n");
520 printf("ID_MODEL=%s\n", model);
521 printf("ID_MODEL_ENC=%s\n", model_enc);
522 printf("ID_REVISION=%s\n", revision);
523 if (serial[0] != '\0') {
524 printf("ID_SERIAL=%s_%s\n", model, serial);
525 printf("ID_SERIAL_SHORT=%s\n", serial);
526 } else
527 printf("ID_SERIAL=%s\n", model);
528
529 if (id.command_set_1 & (1<<5)) {
530 printf("ID_ATA_WRITE_CACHE=1\n");
531 printf("ID_ATA_WRITE_CACHE_ENABLED=%d\n", (id.cfs_enable_1 & (1<<5)) ? 1 : 0);
532 }
533 if (id.command_set_1 & (1<<10)) {
534 printf("ID_ATA_FEATURE_SET_HPA=1\n");
535 printf("ID_ATA_FEATURE_SET_HPA_ENABLED=%d\n", (id.cfs_enable_1 & (1<<10)) ? 1 : 0);
536
537 /*
538 * TODO: use the READ NATIVE MAX ADDRESS command to get the native max address
539 * so it is easy to check whether the protected area is in use.
540 */
541 }
542 if (id.command_set_1 & (1<<3)) {
543 printf("ID_ATA_FEATURE_SET_PM=1\n");
544 printf("ID_ATA_FEATURE_SET_PM_ENABLED=%d\n", (id.cfs_enable_1 & (1<<3)) ? 1 : 0);
545 }
546 if (id.command_set_1 & (1<<1)) {
547 printf("ID_ATA_FEATURE_SET_SECURITY=1\n");
548 printf("ID_ATA_FEATURE_SET_SECURITY_ENABLED=%d\n", (id.cfs_enable_1 & (1<<1)) ? 1 : 0);
549 printf("ID_ATA_FEATURE_SET_SECURITY_ERASE_UNIT_MIN=%d\n", id.trseuc * 2);
550 if ((id.cfs_enable_1 & (1<<1))) /* enabled */ {
551 if (id.dlf & (1<<8))
552 printf("ID_ATA_FEATURE_SET_SECURITY_LEVEL=maximum\n");
553 else
554 printf("ID_ATA_FEATURE_SET_SECURITY_LEVEL=high\n");
555 }
556 if (id.dlf & (1<<5))
557 printf("ID_ATA_FEATURE_SET_SECURITY_ENHANCED_ERASE_UNIT_MIN=%d\n", id.trsEuc * 2);
558 if (id.dlf & (1<<4))
559 printf("ID_ATA_FEATURE_SET_SECURITY_EXPIRE=1\n");
560 if (id.dlf & (1<<3))
561 printf("ID_ATA_FEATURE_SET_SECURITY_FROZEN=1\n");
562 if (id.dlf & (1<<2))
563 printf("ID_ATA_FEATURE_SET_SECURITY_LOCKED=1\n");
564 }
565 if (id.command_set_1 & (1<<0)) {
566 printf("ID_ATA_FEATURE_SET_SMART=1\n");
567 printf("ID_ATA_FEATURE_SET_SMART_ENABLED=%d\n", (id.cfs_enable_1 & (1<<0)) ? 1 : 0);
568 }
569 if (id.command_set_2 & (1<<9)) {
570 printf("ID_ATA_FEATURE_SET_AAM=1\n");
571 printf("ID_ATA_FEATURE_SET_AAM_ENABLED=%d\n", (id.cfs_enable_2 & (1<<9)) ? 1 : 0);
572 printf("ID_ATA_FEATURE_SET_AAM_VENDOR_RECOMMENDED_VALUE=%d\n", id.acoustic >> 8);
573 printf("ID_ATA_FEATURE_SET_AAM_CURRENT_VALUE=%d\n", id.acoustic & 0xff);
574 }
575 if (id.command_set_2 & (1<<5)) {
576 printf("ID_ATA_FEATURE_SET_PUIS=1\n");
577 printf("ID_ATA_FEATURE_SET_PUIS_ENABLED=%d\n", (id.cfs_enable_2 & (1<<5)) ? 1 : 0);
578 }
579 if (id.command_set_2 & (1<<3)) {
580 printf("ID_ATA_FEATURE_SET_APM=1\n");
581 printf("ID_ATA_FEATURE_SET_APM_ENABLED=%d\n", (id.cfs_enable_2 & (1<<3)) ? 1 : 0);
582 if ((id.cfs_enable_2 & (1<<3)))
583 printf("ID_ATA_FEATURE_SET_APM_CURRENT_VALUE=%d\n", id.CurAPMvalues & 0xff);
584 }
585 if (id.command_set_2 & (1<<0))
586 printf("ID_ATA_DOWNLOAD_MICROCODE=1\n");
587
588 /*
589 * Word 76 indicates the capabilities of a SATA device. A PATA device shall set
590 * word 76 to 0000h or FFFFh. If word 76 is set to 0000h or FFFFh, then
591 * the device does not claim compliance with the Serial ATA specification and words
592 * 76 through 79 are not valid and shall be ignored.
593 */
594
595 word = identify.wyde[76];
596 if (!IN_SET(word, 0x0000, 0xffff)) {
597 printf("ID_ATA_SATA=1\n");
598 /*
599 * If bit 2 of word 76 is set to one, then the device supports the Gen2
600 * signaling rate of 3.0 Gb/s (see SATA 2.6).
601 *
602 * If bit 1 of word 76 is set to one, then the device supports the Gen1
603 * signaling rate of 1.5 Gb/s (see SATA 2.6).
604 */
605 if (word & (1<<2))
606 printf("ID_ATA_SATA_SIGNAL_RATE_GEN2=1\n");
607 if (word & (1<<1))
608 printf("ID_ATA_SATA_SIGNAL_RATE_GEN1=1\n");
609 }
610
611 /* Word 217 indicates the nominal media rotation rate of the device */
612 word = identify.wyde[217];
613 if (word == 0x0001)
614 printf ("ID_ATA_ROTATION_RATE_RPM=0\n"); /* non-rotating e.g. SSD */
615 else if (word >= 0x0401 && word <= 0xfffe)
616 printf ("ID_ATA_ROTATION_RATE_RPM=%d\n", word);
617
618 /*
619 * Words 108-111 contain a mandatory World Wide Name (WWN) in the NAA IEEE Registered identifier
620 * format. Word 108 bits (15:12) shall contain 5h, indicating that the naming authority is IEEE.
621 * All other values are reserved.
622 */
623 word = identify.wyde[108];
624 if ((word & 0xf000) == 0x5000) {
625 uint64_t wwwn;
626
627 wwwn = identify.wyde[108];
628 wwwn <<= 16;
629 wwwn |= identify.wyde[109];
630 wwwn <<= 16;
631 wwwn |= identify.wyde[110];
632 wwwn <<= 16;
633 wwwn |= identify.wyde[111];
634 printf("ID_WWN=0x%1$" PRIx64 "\n"
635 "ID_WWN_WITH_EXTENSION=0x%1$" PRIx64 "\n",
636 wwwn);
637 }
638
639 /* from Linux's include/linux/ata.h */
640 if (IN_SET(identify.wyde[0], 0x848a, 0x844a) ||
641 (identify.wyde[83] & 0xc004) == 0x4004)
642 printf("ID_ATA_CFA=1\n");
643 } else {
644 if (serial[0] != '\0')
645 printf("%s_%s\n", model, serial);
646 else
647 printf("%s\n", model);
648 }
649
650 return 0;
651 }
652