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Merge branch 'master' of ssh://git.freedesktop.org/git/systemd/systemd
[thirdparty/systemd.git] / src / udev / ata_id / ata_id.c
1 /*
2 * ata_id - reads product/serial number from ATA drives
3 *
4 * Copyright (C) 2005-2008 Kay Sievers <kay.sievers@vrfy.org>
5 * Copyright (C) 2009 Lennart Poettering <lennart@poettering.net>
6 * Copyright (C) 2009-2010 David Zeuthen <zeuthen@gmail.com>
7 *
8 * This program is free software: you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation, either version 2 of the License, or
11 * (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program. If not, see <http://www.gnu.org/licenses/>.
20 */
21
22 #include <stdio.h>
23 #include <stdlib.h>
24 #include <stdint.h>
25 #include <unistd.h>
26 #include <fcntl.h>
27 #include <ctype.h>
28 #include <assert.h>
29 #include <string.h>
30 #include <errno.h>
31 #include <getopt.h>
32 #include <scsi/scsi.h>
33 #include <scsi/sg.h>
34 #include <scsi/scsi_ioctl.h>
35 #include <sys/ioctl.h>
36 #include <sys/types.h>
37 #include <sys/stat.h>
38 #include <linux/types.h>
39 #include <linux/hdreg.h>
40 #include <linux/fs.h>
41 #include <linux/cdrom.h>
42 #include <linux/bsg.h>
43 #include <arpa/inet.h>
44
45 #include "libudev.h"
46 #include "libudev-private.h"
47
48 #define COMMAND_TIMEOUT_MSEC (30 * 1000)
49
50 static int disk_scsi_inquiry_command(int fd,
51 void *buf,
52 size_t buf_len)
53 {
54 struct sg_io_v4 io_v4;
55 uint8_t cdb[6];
56 uint8_t sense[32];
57 int ret;
58
59 /*
60 * INQUIRY, see SPC-4 section 6.4
61 */
62 memset(cdb, 0, sizeof(cdb));
63 cdb[0] = 0x12; /* OPERATION CODE: INQUIRY */
64 cdb[3] = (buf_len >> 8); /* ALLOCATION LENGTH */
65 cdb[4] = (buf_len & 0xff);
66
67 memset(sense, 0, sizeof(sense));
68
69 memset(&io_v4, 0, sizeof(struct sg_io_v4));
70 io_v4.guard = 'Q';
71 io_v4.protocol = BSG_PROTOCOL_SCSI;
72 io_v4.subprotocol = BSG_SUB_PROTOCOL_SCSI_CMD;
73 io_v4.request_len = sizeof (cdb);
74 io_v4.request = (uintptr_t) cdb;
75 io_v4.max_response_len = sizeof (sense);
76 io_v4.response = (uintptr_t) sense;
77 io_v4.din_xfer_len = buf_len;
78 io_v4.din_xferp = (uintptr_t) buf;
79 io_v4.timeout = COMMAND_TIMEOUT_MSEC;
80
81 ret = ioctl(fd, SG_IO, &io_v4);
82 if (ret != 0) {
83 /* could be that the driver doesn't do version 4, try version 3 */
84 if (errno == EINVAL) {
85 struct sg_io_hdr io_hdr;
86
87 memset(&io_hdr, 0, sizeof(struct sg_io_hdr));
88 io_hdr.interface_id = 'S';
89 io_hdr.cmdp = (unsigned char*) cdb;
90 io_hdr.cmd_len = sizeof (cdb);
91 io_hdr.dxferp = buf;
92 io_hdr.dxfer_len = buf_len;
93 io_hdr.sbp = sense;
94 io_hdr.mx_sb_len = sizeof (sense);
95 io_hdr.dxfer_direction = SG_DXFER_FROM_DEV;
96 io_hdr.timeout = COMMAND_TIMEOUT_MSEC;
97
98 ret = ioctl(fd, SG_IO, &io_hdr);
99 if (ret != 0)
100 goto out;
101
102 /* even if the ioctl succeeds, we need to check the return value */
103 if (!(io_hdr.status == 0 &&
104 io_hdr.host_status == 0 &&
105 io_hdr.driver_status == 0)) {
106 errno = EIO;
107 ret = -1;
108 goto out;
109 }
110 } else {
111 goto out;
112 }
113 }
114
115 /* even if the ioctl succeeds, we need to check the return value */
116 if (!(io_v4.device_status == 0 &&
117 io_v4.transport_status == 0 &&
118 io_v4.driver_status == 0)) {
119 errno = EIO;
120 ret = -1;
121 goto out;
122 }
123
124 out:
125 return ret;
126 }
127
128 static int disk_identify_command(int fd,
129 void *buf,
130 size_t buf_len)
131 {
132 struct sg_io_v4 io_v4;
133 uint8_t cdb[12];
134 uint8_t sense[32];
135 uint8_t *desc = sense+8;
136 int ret;
137
138 /*
139 * ATA Pass-Through 12 byte command, as described in
140 *
141 * T10 04-262r8 ATA Command Pass-Through
142 *
143 * from http://www.t10.org/ftp/t10/document.04/04-262r8.pdf
144 */
145 memset(cdb, 0, sizeof(cdb));
146 cdb[0] = 0xa1; /* OPERATION CODE: 12 byte pass through */
147 cdb[1] = 4 << 1; /* PROTOCOL: PIO Data-in */
148 cdb[2] = 0x2e; /* OFF_LINE=0, CK_COND=1, T_DIR=1, BYT_BLOK=1, T_LENGTH=2 */
149 cdb[3] = 0; /* FEATURES */
150 cdb[4] = 1; /* SECTORS */
151 cdb[5] = 0; /* LBA LOW */
152 cdb[6] = 0; /* LBA MID */
153 cdb[7] = 0; /* LBA HIGH */
154 cdb[8] = 0 & 0x4F; /* SELECT */
155 cdb[9] = 0xEC; /* Command: ATA IDENTIFY DEVICE */;
156 memset(sense, 0, sizeof(sense));
157
158 memset(&io_v4, 0, sizeof(struct sg_io_v4));
159 io_v4.guard = 'Q';
160 io_v4.protocol = BSG_PROTOCOL_SCSI;
161 io_v4.subprotocol = BSG_SUB_PROTOCOL_SCSI_CMD;
162 io_v4.request_len = sizeof (cdb);
163 io_v4.request = (uintptr_t) cdb;
164 io_v4.max_response_len = sizeof (sense);
165 io_v4.response = (uintptr_t) sense;
166 io_v4.din_xfer_len = buf_len;
167 io_v4.din_xferp = (uintptr_t) buf;
168 io_v4.timeout = COMMAND_TIMEOUT_MSEC;
169
170 ret = ioctl(fd, SG_IO, &io_v4);
171 if (ret != 0) {
172 /* could be that the driver doesn't do version 4, try version 3 */
173 if (errno == EINVAL) {
174 struct sg_io_hdr io_hdr;
175
176 memset(&io_hdr, 0, sizeof(struct sg_io_hdr));
177 io_hdr.interface_id = 'S';
178 io_hdr.cmdp = (unsigned char*) cdb;
179 io_hdr.cmd_len = sizeof (cdb);
180 io_hdr.dxferp = buf;
181 io_hdr.dxfer_len = buf_len;
182 io_hdr.sbp = sense;
183 io_hdr.mx_sb_len = sizeof (sense);
184 io_hdr.dxfer_direction = SG_DXFER_FROM_DEV;
185 io_hdr.timeout = COMMAND_TIMEOUT_MSEC;
186
187 ret = ioctl(fd, SG_IO, &io_hdr);
188 if (ret != 0)
189 goto out;
190 } else {
191 goto out;
192 }
193 }
194
195 if (!(sense[0] == 0x72 && desc[0] == 0x9 && desc[1] == 0x0c)) {
196 errno = EIO;
197 ret = -1;
198 goto out;
199 }
200
201 out:
202 return ret;
203 }
204
205 static int disk_identify_packet_device_command(int fd,
206 void *buf,
207 size_t buf_len)
208 {
209 struct sg_io_v4 io_v4;
210 uint8_t cdb[16];
211 uint8_t sense[32];
212 uint8_t *desc = sense+8;
213 int ret;
214
215 /*
216 * ATA Pass-Through 16 byte command, as described in
217 *
218 * T10 04-262r8 ATA Command Pass-Through
219 *
220 * from http://www.t10.org/ftp/t10/document.04/04-262r8.pdf
221 */
222 memset(cdb, 0, sizeof(cdb));
223 cdb[0] = 0x85; /* OPERATION CODE: 16 byte pass through */
224 cdb[1] = 4 << 1; /* PROTOCOL: PIO Data-in */
225 cdb[2] = 0x2e; /* OFF_LINE=0, CK_COND=1, T_DIR=1, BYT_BLOK=1, T_LENGTH=2 */
226 cdb[3] = 0; /* FEATURES */
227 cdb[4] = 0; /* FEATURES */
228 cdb[5] = 0; /* SECTORS */
229 cdb[6] = 1; /* SECTORS */
230 cdb[7] = 0; /* LBA LOW */
231 cdb[8] = 0; /* LBA LOW */
232 cdb[9] = 0; /* LBA MID */
233 cdb[10] = 0; /* LBA MID */
234 cdb[11] = 0; /* LBA HIGH */
235 cdb[12] = 0; /* LBA HIGH */
236 cdb[13] = 0; /* DEVICE */
237 cdb[14] = 0xA1; /* Command: ATA IDENTIFY PACKET DEVICE */;
238 cdb[15] = 0; /* CONTROL */
239 memset(sense, 0, sizeof(sense));
240
241 memset(&io_v4, 0, sizeof(struct sg_io_v4));
242 io_v4.guard = 'Q';
243 io_v4.protocol = BSG_PROTOCOL_SCSI;
244 io_v4.subprotocol = BSG_SUB_PROTOCOL_SCSI_CMD;
245 io_v4.request_len = sizeof (cdb);
246 io_v4.request = (uintptr_t) cdb;
247 io_v4.max_response_len = sizeof (sense);
248 io_v4.response = (uintptr_t) sense;
249 io_v4.din_xfer_len = buf_len;
250 io_v4.din_xferp = (uintptr_t) buf;
251 io_v4.timeout = COMMAND_TIMEOUT_MSEC;
252
253 ret = ioctl(fd, SG_IO, &io_v4);
254 if (ret != 0) {
255 /* could be that the driver doesn't do version 4, try version 3 */
256 if (errno == EINVAL) {
257 struct sg_io_hdr io_hdr;
258
259 memset(&io_hdr, 0, sizeof(struct sg_io_hdr));
260 io_hdr.interface_id = 'S';
261 io_hdr.cmdp = (unsigned char*) cdb;
262 io_hdr.cmd_len = sizeof (cdb);
263 io_hdr.dxferp = buf;
264 io_hdr.dxfer_len = buf_len;
265 io_hdr.sbp = sense;
266 io_hdr.mx_sb_len = sizeof (sense);
267 io_hdr.dxfer_direction = SG_DXFER_FROM_DEV;
268 io_hdr.timeout = COMMAND_TIMEOUT_MSEC;
269
270 ret = ioctl(fd, SG_IO, &io_hdr);
271 if (ret != 0)
272 goto out;
273 } else {
274 goto out;
275 }
276 }
277
278 if (!(sense[0] == 0x72 && desc[0] == 0x9 && desc[1] == 0x0c)) {
279 errno = EIO;
280 ret = -1;
281 goto out;
282 }
283
284 out:
285 return ret;
286 }
287
288 /**
289 * disk_identify_get_string:
290 * @identify: A block of IDENTIFY data
291 * @offset_words: Offset of the string to get, in words.
292 * @dest: Destination buffer for the string.
293 * @dest_len: Length of destination buffer, in bytes.
294 *
295 * Copies the ATA string from @identify located at @offset_words into @dest.
296 */
297 static void disk_identify_get_string(uint8_t identify[512],
298 unsigned int offset_words,
299 char *dest,
300 size_t dest_len)
301 {
302 unsigned int c1;
303 unsigned int c2;
304
305 assert(identify != NULL);
306 assert(dest != NULL);
307 assert((dest_len & 1) == 0);
308
309 while (dest_len > 0) {
310 c1 = identify[offset_words * 2 + 1];
311 c2 = identify[offset_words * 2];
312 *dest = c1;
313 dest++;
314 *dest = c2;
315 dest++;
316 offset_words++;
317 dest_len -= 2;
318 }
319 }
320
321 static void disk_identify_fixup_string(uint8_t identify[512],
322 unsigned int offset_words,
323 size_t len)
324 {
325 disk_identify_get_string(identify, offset_words,
326 (char *) identify + offset_words * 2, len);
327 }
328
329 static void disk_identify_fixup_uint16 (uint8_t identify[512], unsigned int offset_words)
330 {
331 uint16_t *p;
332
333 p = (uint16_t *) identify;
334 p[offset_words] = le16toh (p[offset_words]);
335 }
336
337 /**
338 * disk_identify:
339 * @udev: The libudev context.
340 * @fd: File descriptor for the block device.
341 * @out_identify: Return location for IDENTIFY data.
342 * @out_is_packet_device: Return location for whether returned data is from a IDENTIFY PACKET DEVICE.
343 *
344 * Sends the IDENTIFY DEVICE or IDENTIFY PACKET DEVICE command to the
345 * device represented by @fd. If successful, then the result will be
346 * copied into @out_identify and @out_is_packet_device.
347 *
348 * This routine is based on code from libatasmart, Copyright 2008
349 * Lennart Poettering, LGPL v2.1.
350 *
351 * Returns: 0 if the data was successfully obtained, otherwise
352 * non-zero with errno set.
353 */
354 static int disk_identify(struct udev *udev,
355 int fd,
356 uint8_t out_identify[512],
357 int *out_is_packet_device)
358 {
359 int ret;
360 uint8_t inquiry_buf[36];
361 int peripheral_device_type;
362 int all_nul_bytes;
363 int n;
364 int is_packet_device;
365
366 assert(out_identify != NULL);
367
368 /* init results */
369 ret = -1;
370 memset(out_identify, '\0', 512);
371 is_packet_device = 0;
372
373 /* If we were to use ATA PASS_THROUGH (12) on an ATAPI device
374 * we could accidentally blank media. This is because MMC's BLANK
375 * command has the same op-code (0x61).
376 *
377 * To prevent this from happening we bail out if the device
378 * isn't a Direct Access Block Device, e.g. SCSI type 0x00
379 * (CD/DVD devices are type 0x05). So we send a SCSI INQUIRY
380 * command first... libata is handling this via its SCSI
381 * emulation layer.
382 *
383 * This also ensures that we're actually dealing with a device
384 * that understands SCSI commands.
385 *
386 * (Yes, it is a bit perverse that we're tunneling the ATA
387 * command through SCSI and relying on the ATA driver
388 * emulating SCSI well-enough...)
389 *
390 * (See commit 160b069c25690bfb0c785994c7c3710289179107 for
391 * the original bug-fix and see http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=556635
392 * for the original bug-report.)
393 */
394 ret = disk_scsi_inquiry_command (fd, inquiry_buf, sizeof (inquiry_buf));
395 if (ret != 0)
396 goto out;
397
398 /* SPC-4, section 6.4.2: Standard INQUIRY data */
399 peripheral_device_type = inquiry_buf[0] & 0x1f;
400 if (peripheral_device_type == 0x05)
401 {
402 is_packet_device = 1;
403 ret = disk_identify_packet_device_command(fd, out_identify, 512);
404 goto check_nul_bytes;
405 }
406 if (peripheral_device_type != 0x00) {
407 ret = -1;
408 errno = EIO;
409 goto out;
410 }
411
412 /* OK, now issue the IDENTIFY DEVICE command */
413 ret = disk_identify_command(fd, out_identify, 512);
414 if (ret != 0)
415 goto out;
416
417 check_nul_bytes:
418 /* Check if IDENTIFY data is all NUL bytes - if so, bail */
419 all_nul_bytes = 1;
420 for (n = 0; n < 512; n++) {
421 if (out_identify[n] != '\0') {
422 all_nul_bytes = 0;
423 break;
424 }
425 }
426
427 if (all_nul_bytes) {
428 ret = -1;
429 errno = EIO;
430 goto out;
431 }
432
433 out:
434 if (out_is_packet_device != NULL)
435 *out_is_packet_device = is_packet_device;
436 return ret;
437 }
438
439 static void log_fn(struct udev *udev, int priority,
440 const char *file, int line, const char *fn,
441 const char *format, va_list args)
442 {
443 vsyslog(priority, format, args);
444 }
445
446 int main(int argc, char *argv[])
447 {
448 struct udev *udev;
449 struct hd_driveid id;
450 uint8_t identify[512];
451 uint16_t *identify_words;
452 char model[41];
453 char model_enc[256];
454 char serial[21];
455 char revision[9];
456 const char *node = NULL;
457 int export = 0;
458 int fd;
459 uint16_t word;
460 int rc = 0;
461 int is_packet_device = 0;
462 static const struct option options[] = {
463 { "export", no_argument, NULL, 'x' },
464 { "help", no_argument, NULL, 'h' },
465 {}
466 };
467
468 udev = udev_new();
469 if (udev == NULL)
470 goto exit;
471
472 udev_log_init("ata_id");
473 udev_set_log_fn(udev, log_fn);
474
475 while (1) {
476 int option;
477
478 option = getopt_long(argc, argv, "xh", options, NULL);
479 if (option == -1)
480 break;
481
482 switch (option) {
483 case 'x':
484 export = 1;
485 break;
486 case 'h':
487 printf("Usage: ata_id [--export] [--help] <device>\n"
488 " --export print values as environment keys\n"
489 " --help print this help text\n\n");
490 goto exit;
491 }
492 }
493
494 node = argv[optind];
495 if (node == NULL) {
496 err(udev, "no node specified\n");
497 rc = 1;
498 goto exit;
499 }
500
501 fd = open(node, O_RDONLY|O_NONBLOCK);
502 if (fd < 0) {
503 err(udev, "unable to open '%s'\n", node);
504 rc = 1;
505 goto exit;
506 }
507
508 if (disk_identify(udev, fd, identify, &is_packet_device) == 0) {
509 /*
510 * fix up only the fields from the IDENTIFY data that we are going to
511 * use and copy it into the hd_driveid struct for convenience
512 */
513 disk_identify_fixup_string (identify, 10, 20); /* serial */
514 disk_identify_fixup_string (identify, 23, 6); /* fwrev */
515 disk_identify_fixup_string (identify, 27, 40); /* model */
516 disk_identify_fixup_uint16 (identify, 0); /* configuration */
517 disk_identify_fixup_uint16 (identify, 75); /* queue depth */
518 disk_identify_fixup_uint16 (identify, 75); /* SATA capabilities */
519 disk_identify_fixup_uint16 (identify, 82); /* command set supported */
520 disk_identify_fixup_uint16 (identify, 83); /* command set supported */
521 disk_identify_fixup_uint16 (identify, 84); /* command set supported */
522 disk_identify_fixup_uint16 (identify, 85); /* command set supported */
523 disk_identify_fixup_uint16 (identify, 86); /* command set supported */
524 disk_identify_fixup_uint16 (identify, 87); /* command set supported */
525 disk_identify_fixup_uint16 (identify, 89); /* time required for SECURITY ERASE UNIT */
526 disk_identify_fixup_uint16 (identify, 90); /* time required for enhanced SECURITY ERASE UNIT */
527 disk_identify_fixup_uint16 (identify, 91); /* current APM values */
528 disk_identify_fixup_uint16 (identify, 94); /* current AAM value */
529 disk_identify_fixup_uint16 (identify, 128); /* device lock function */
530 disk_identify_fixup_uint16 (identify, 217); /* nominal media rotation rate */
531 memcpy(&id, identify, sizeof id);
532 } else {
533 /* If this fails, then try HDIO_GET_IDENTITY */
534 if (ioctl(fd, HDIO_GET_IDENTITY, &id) != 0) {
535 info(udev, "HDIO_GET_IDENTITY failed for '%s': %m\n", node);
536 rc = 2;
537 goto close;
538 }
539 }
540 identify_words = (uint16_t *) identify;
541
542 memcpy (model, id.model, 40);
543 model[40] = '\0';
544 udev_util_encode_string(model, model_enc, sizeof(model_enc));
545 util_replace_whitespace((char *) id.model, model, 40);
546 util_replace_chars(model, NULL);
547 util_replace_whitespace((char *) id.serial_no, serial, 20);
548 util_replace_chars(serial, NULL);
549 util_replace_whitespace((char *) id.fw_rev, revision, 8);
550 util_replace_chars(revision, NULL);
551
552 if (export) {
553 /* Set this to convey the disk speaks the ATA protocol */
554 printf("ID_ATA=1\n");
555
556 if ((id.config >> 8) & 0x80) {
557 /* This is an ATAPI device */
558 switch ((id.config >> 8) & 0x1f) {
559 case 0:
560 printf("ID_TYPE=cd\n");
561 break;
562 case 1:
563 printf("ID_TYPE=tape\n");
564 break;
565 case 5:
566 printf("ID_TYPE=cd\n");
567 break;
568 case 7:
569 printf("ID_TYPE=optical\n");
570 break;
571 default:
572 printf("ID_TYPE=generic\n");
573 break;
574 }
575 } else {
576 printf("ID_TYPE=disk\n");
577 }
578 printf("ID_BUS=ata\n");
579 printf("ID_MODEL=%s\n", model);
580 printf("ID_MODEL_ENC=%s\n", model_enc);
581 printf("ID_REVISION=%s\n", revision);
582 if (serial[0] != '\0') {
583 printf("ID_SERIAL=%s_%s\n", model, serial);
584 printf("ID_SERIAL_SHORT=%s\n", serial);
585 } else {
586 printf("ID_SERIAL=%s\n", model);
587 }
588
589 if (id.command_set_1 & (1<<5)) {
590 printf ("ID_ATA_WRITE_CACHE=1\n");
591 printf ("ID_ATA_WRITE_CACHE_ENABLED=%d\n", (id.cfs_enable_1 & (1<<5)) ? 1 : 0);
592 }
593 if (id.command_set_1 & (1<<10)) {
594 printf("ID_ATA_FEATURE_SET_HPA=1\n");
595 printf("ID_ATA_FEATURE_SET_HPA_ENABLED=%d\n", (id.cfs_enable_1 & (1<<10)) ? 1 : 0);
596
597 /*
598 * TODO: use the READ NATIVE MAX ADDRESS command to get the native max address
599 * so it is easy to check whether the protected area is in use.
600 */
601 }
602 if (id.command_set_1 & (1<<3)) {
603 printf("ID_ATA_FEATURE_SET_PM=1\n");
604 printf("ID_ATA_FEATURE_SET_PM_ENABLED=%d\n", (id.cfs_enable_1 & (1<<3)) ? 1 : 0);
605 }
606 if (id.command_set_1 & (1<<1)) {
607 printf("ID_ATA_FEATURE_SET_SECURITY=1\n");
608 printf("ID_ATA_FEATURE_SET_SECURITY_ENABLED=%d\n", (id.cfs_enable_1 & (1<<1)) ? 1 : 0);
609 printf("ID_ATA_FEATURE_SET_SECURITY_ERASE_UNIT_MIN=%d\n", id.trseuc * 2);
610 if ((id.cfs_enable_1 & (1<<1))) /* enabled */ {
611 if (id.dlf & (1<<8))
612 printf("ID_ATA_FEATURE_SET_SECURITY_LEVEL=maximum\n");
613 else
614 printf("ID_ATA_FEATURE_SET_SECURITY_LEVEL=high\n");
615 }
616 if (id.dlf & (1<<5))
617 printf("ID_ATA_FEATURE_SET_SECURITY_ENHANCED_ERASE_UNIT_MIN=%d\n", id.trsEuc * 2);
618 if (id.dlf & (1<<4))
619 printf("ID_ATA_FEATURE_SET_SECURITY_EXPIRE=1\n");
620 if (id.dlf & (1<<3))
621 printf("ID_ATA_FEATURE_SET_SECURITY_FROZEN=1\n");
622 if (id.dlf & (1<<2))
623 printf("ID_ATA_FEATURE_SET_SECURITY_LOCKED=1\n");
624 }
625 if (id.command_set_1 & (1<<0)) {
626 printf("ID_ATA_FEATURE_SET_SMART=1\n");
627 printf("ID_ATA_FEATURE_SET_SMART_ENABLED=%d\n", (id.cfs_enable_1 & (1<<0)) ? 1 : 0);
628 }
629 if (id.command_set_2 & (1<<9)) {
630 printf("ID_ATA_FEATURE_SET_AAM=1\n");
631 printf("ID_ATA_FEATURE_SET_AAM_ENABLED=%d\n", (id.cfs_enable_2 & (1<<9)) ? 1 : 0);
632 printf("ID_ATA_FEATURE_SET_AAM_VENDOR_RECOMMENDED_VALUE=%d\n", id.acoustic >> 8);
633 printf("ID_ATA_FEATURE_SET_AAM_CURRENT_VALUE=%d\n", id.acoustic & 0xff);
634 }
635 if (id.command_set_2 & (1<<5)) {
636 printf("ID_ATA_FEATURE_SET_PUIS=1\n");
637 printf("ID_ATA_FEATURE_SET_PUIS_ENABLED=%d\n", (id.cfs_enable_2 & (1<<5)) ? 1 : 0);
638 }
639 if (id.command_set_2 & (1<<3)) {
640 printf("ID_ATA_FEATURE_SET_APM=1\n");
641 printf("ID_ATA_FEATURE_SET_APM_ENABLED=%d\n", (id.cfs_enable_2 & (1<<3)) ? 1 : 0);
642 if ((id.cfs_enable_2 & (1<<3)))
643 printf("ID_ATA_FEATURE_SET_APM_CURRENT_VALUE=%d\n", id.CurAPMvalues & 0xff);
644 }
645 if (id.command_set_2 & (1<<0))
646 printf("ID_ATA_DOWNLOAD_MICROCODE=1\n");
647
648 /*
649 * Word 76 indicates the capabilities of a SATA device. A PATA device shall set
650 * word 76 to 0000h or FFFFh. If word 76 is set to 0000h or FFFFh, then
651 * the device does not claim compliance with the Serial ATA specification and words
652 * 76 through 79 are not valid and shall be ignored.
653 */
654 word = *((uint16_t *) identify + 76);
655 if (word != 0x0000 && word != 0xffff) {
656 printf("ID_ATA_SATA=1\n");
657 /*
658 * If bit 2 of word 76 is set to one, then the device supports the Gen2
659 * signaling rate of 3.0 Gb/s (see SATA 2.6).
660 *
661 * If bit 1 of word 76 is set to one, then the device supports the Gen1
662 * signaling rate of 1.5 Gb/s (see SATA 2.6).
663 */
664 if (word & (1<<2))
665 printf("ID_ATA_SATA_SIGNAL_RATE_GEN2=1\n");
666 if (word & (1<<1))
667 printf("ID_ATA_SATA_SIGNAL_RATE_GEN1=1\n");
668 }
669
670 /* Word 217 indicates the nominal media rotation rate of the device */
671 word = *((uint16_t *) identify + 217);
672 if (word != 0x0000) {
673 if (word == 0x0001) {
674 printf ("ID_ATA_ROTATION_RATE_RPM=0\n"); /* non-rotating e.g. SSD */
675 } else if (word >= 0x0401 && word <= 0xfffe) {
676 printf ("ID_ATA_ROTATION_RATE_RPM=%d\n", word);
677 }
678 }
679
680 /*
681 * Words 108-111 contain a mandatory World Wide Name (WWN) in the NAA IEEE Registered identifier
682 * format. Word 108 bits (15:12) shall contain 5h, indicating that the naming authority is IEEE.
683 * All other values are reserved.
684 */
685 word = *((uint16_t *) identify + 108);
686 if ((word & 0xf000) == 0x5000) {
687 uint64_t wwwn;
688
689 wwwn = *((uint16_t *) identify + 108);
690 wwwn <<= 16;
691 wwwn |= *((uint16_t *) identify + 109);
692 wwwn <<= 16;
693 wwwn |= *((uint16_t *) identify + 110);
694 wwwn <<= 16;
695 wwwn |= *((uint16_t *) identify + 111);
696 printf("ID_WWN=0x%llx\n", (unsigned long long int) wwwn);
697 /* ATA devices have no vendor extension */
698 printf("ID_WWN_WITH_EXTENSION=0x%llx\n", (unsigned long long int) wwwn);
699 }
700
701 /* from Linux's include/linux/ata.h */
702 if (identify_words[0] == 0x848a || identify_words[0] == 0x844a) {
703 printf("ID_ATA_CFA=1\n");
704 } else {
705 if ((identify_words[83] & 0xc004) == 0x4004) {
706 printf("ID_ATA_CFA=1\n");
707 }
708 }
709 } else {
710 if (serial[0] != '\0')
711 printf("%s_%s\n", model, serial);
712 else
713 printf("%s\n", model);
714 }
715 close:
716 close(fd);
717 exit:
718 udev_unref(udev);
719 udev_log_close();
720 return rc;
721 }