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Diffstat (limited to 'src/grp-udev/ata_id/ata_id.c')
-rw-r--r--src/grp-udev/ata_id/ata_id.c674
1 files changed, 674 insertions, 0 deletions
diff --git a/src/grp-udev/ata_id/ata_id.c b/src/grp-udev/ata_id/ata_id.c
new file mode 100644
index 0000000000..1e414664ce
--- /dev/null
+++ b/src/grp-udev/ata_id/ata_id.c
@@ -0,0 +1,674 @@
+/*
+ * ata_id - reads product/serial number from ATA drives
+ *
+ * Copyright (C) 2005-2008 Kay Sievers <kay@vrfy.org>
+ * Copyright (C) 2009 Lennart Poettering <lennart@poettering.net>
+ * Copyright (C) 2009-2010 David Zeuthen <zeuthen@gmail.com>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <ctype.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <getopt.h>
+#include <linux/bsg.h>
+#include <linux/hdreg.h>
+#include <scsi/scsi.h>
+#include <scsi/scsi_ioctl.h>
+#include <scsi/sg.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/ioctl.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+#include "libudev.h"
+
+#include "fd-util.h"
+#include "libudev-private.h"
+#include "log.h"
+#include "udev-util.h"
+
+#define COMMAND_TIMEOUT_MSEC (30 * 1000)
+
+static int disk_scsi_inquiry_command(int fd,
+ void *buf,
+ size_t buf_len)
+{
+ uint8_t cdb[6] = {
+ /*
+ * INQUIRY, see SPC-4 section 6.4
+ */
+ [0] = 0x12, /* OPERATION CODE: INQUIRY */
+ [3] = (buf_len >> 8), /* ALLOCATION LENGTH */
+ [4] = (buf_len & 0xff),
+ };
+ uint8_t sense[32] = {};
+ struct sg_io_v4 io_v4 = {
+ .guard = 'Q',
+ .protocol = BSG_PROTOCOL_SCSI,
+ .subprotocol = BSG_SUB_PROTOCOL_SCSI_CMD,
+ .request_len = sizeof(cdb),
+ .request = (uintptr_t) cdb,
+ .max_response_len = sizeof(sense),
+ .response = (uintptr_t) sense,
+ .din_xfer_len = buf_len,
+ .din_xferp = (uintptr_t) buf,
+ .timeout = COMMAND_TIMEOUT_MSEC,
+ };
+ int ret;
+
+ ret = ioctl(fd, SG_IO, &io_v4);
+ if (ret != 0) {
+ /* could be that the driver doesn't do version 4, try version 3 */
+ if (errno == EINVAL) {
+ struct sg_io_hdr io_hdr = {
+ .interface_id = 'S',
+ .cmdp = (unsigned char*) cdb,
+ .cmd_len = sizeof (cdb),
+ .dxferp = buf,
+ .dxfer_len = buf_len,
+ .sbp = sense,
+ .mx_sb_len = sizeof(sense),
+ .dxfer_direction = SG_DXFER_FROM_DEV,
+ .timeout = COMMAND_TIMEOUT_MSEC,
+ };
+
+ ret = ioctl(fd, SG_IO, &io_hdr);
+ if (ret != 0)
+ return ret;
+
+ /* even if the ioctl succeeds, we need to check the return value */
+ if (!(io_hdr.status == 0 &&
+ io_hdr.host_status == 0 &&
+ io_hdr.driver_status == 0)) {
+ errno = EIO;
+ return -1;
+ }
+ } else
+ return ret;
+ }
+
+ /* even if the ioctl succeeds, we need to check the return value */
+ if (!(io_v4.device_status == 0 &&
+ io_v4.transport_status == 0 &&
+ io_v4.driver_status == 0)) {
+ errno = EIO;
+ return -1;
+ }
+
+ return 0;
+}
+
+static int disk_identify_command(int fd,
+ void *buf,
+ size_t buf_len)
+{
+ uint8_t cdb[12] = {
+ /*
+ * ATA Pass-Through 12 byte command, as described in
+ *
+ * T10 04-262r8 ATA Command Pass-Through
+ *
+ * from http://www.t10.org/ftp/t10/document.04/04-262r8.pdf
+ */
+ [0] = 0xa1, /* OPERATION CODE: 12 byte pass through */
+ [1] = 4 << 1, /* PROTOCOL: PIO Data-in */
+ [2] = 0x2e, /* OFF_LINE=0, CK_COND=1, T_DIR=1, BYT_BLOK=1, T_LENGTH=2 */
+ [3] = 0, /* FEATURES */
+ [4] = 1, /* SECTORS */
+ [5] = 0, /* LBA LOW */
+ [6] = 0, /* LBA MID */
+ [7] = 0, /* LBA HIGH */
+ [8] = 0 & 0x4F, /* SELECT */
+ [9] = 0xEC, /* Command: ATA IDENTIFY DEVICE */
+ };
+ uint8_t sense[32] = {};
+ uint8_t *desc = sense + 8;
+ struct sg_io_v4 io_v4 = {
+ .guard = 'Q',
+ .protocol = BSG_PROTOCOL_SCSI,
+ .subprotocol = BSG_SUB_PROTOCOL_SCSI_CMD,
+ .request_len = sizeof(cdb),
+ .request = (uintptr_t) cdb,
+ .max_response_len = sizeof(sense),
+ .response = (uintptr_t) sense,
+ .din_xfer_len = buf_len,
+ .din_xferp = (uintptr_t) buf,
+ .timeout = COMMAND_TIMEOUT_MSEC,
+ };
+ int ret;
+
+ ret = ioctl(fd, SG_IO, &io_v4);
+ if (ret != 0) {
+ /* could be that the driver doesn't do version 4, try version 3 */
+ if (errno == EINVAL) {
+ struct sg_io_hdr io_hdr = {
+ .interface_id = 'S',
+ .cmdp = (unsigned char*) cdb,
+ .cmd_len = sizeof (cdb),
+ .dxferp = buf,
+ .dxfer_len = buf_len,
+ .sbp = sense,
+ .mx_sb_len = sizeof (sense),
+ .dxfer_direction = SG_DXFER_FROM_DEV,
+ .timeout = COMMAND_TIMEOUT_MSEC,
+ };
+
+ ret = ioctl(fd, SG_IO, &io_hdr);
+ if (ret != 0)
+ return ret;
+ } else
+ return ret;
+ }
+
+ if (!(sense[0] == 0x72 && desc[0] == 0x9 && desc[1] == 0x0c)) {
+ errno = EIO;
+ return -1;
+ }
+
+ return 0;
+}
+
+static int disk_identify_packet_device_command(int fd,
+ void *buf,
+ size_t buf_len)
+{
+ uint8_t cdb[16] = {
+ /*
+ * ATA Pass-Through 16 byte command, as described in
+ *
+ * T10 04-262r8 ATA Command Pass-Through
+ *
+ * from http://www.t10.org/ftp/t10/document.04/04-262r8.pdf
+ */
+ [0] = 0x85, /* OPERATION CODE: 16 byte pass through */
+ [1] = 4 << 1, /* PROTOCOL: PIO Data-in */
+ [2] = 0x2e, /* OFF_LINE=0, CK_COND=1, T_DIR=1, BYT_BLOK=1, T_LENGTH=2 */
+ [3] = 0, /* FEATURES */
+ [4] = 0, /* FEATURES */
+ [5] = 0, /* SECTORS */
+ [6] = 1, /* SECTORS */
+ [7] = 0, /* LBA LOW */
+ [8] = 0, /* LBA LOW */
+ [9] = 0, /* LBA MID */
+ [10] = 0, /* LBA MID */
+ [11] = 0, /* LBA HIGH */
+ [12] = 0, /* LBA HIGH */
+ [13] = 0, /* DEVICE */
+ [14] = 0xA1, /* Command: ATA IDENTIFY PACKET DEVICE */
+ [15] = 0, /* CONTROL */
+ };
+ uint8_t sense[32] = {};
+ uint8_t *desc = sense + 8;
+ struct sg_io_v4 io_v4 = {
+ .guard = 'Q',
+ .protocol = BSG_PROTOCOL_SCSI,
+ .subprotocol = BSG_SUB_PROTOCOL_SCSI_CMD,
+ .request_len = sizeof (cdb),
+ .request = (uintptr_t) cdb,
+ .max_response_len = sizeof (sense),
+ .response = (uintptr_t) sense,
+ .din_xfer_len = buf_len,
+ .din_xferp = (uintptr_t) buf,
+ .timeout = COMMAND_TIMEOUT_MSEC,
+ };
+ int ret;
+
+ ret = ioctl(fd, SG_IO, &io_v4);
+ if (ret != 0) {
+ /* could be that the driver doesn't do version 4, try version 3 */
+ if (errno == EINVAL) {
+ struct sg_io_hdr io_hdr = {
+ .interface_id = 'S',
+ .cmdp = (unsigned char*) cdb,
+ .cmd_len = sizeof (cdb),
+ .dxferp = buf,
+ .dxfer_len = buf_len,
+ .sbp = sense,
+ .mx_sb_len = sizeof (sense),
+ .dxfer_direction = SG_DXFER_FROM_DEV,
+ .timeout = COMMAND_TIMEOUT_MSEC,
+ };
+
+ ret = ioctl(fd, SG_IO, &io_hdr);
+ if (ret != 0)
+ return ret;
+ } else
+ return ret;
+ }
+
+ if (!(sense[0] == 0x72 && desc[0] == 0x9 && desc[1] == 0x0c)) {
+ errno = EIO;
+ return -1;
+ }
+
+ return 0;
+}
+
+/**
+ * disk_identify_get_string:
+ * @identify: A block of IDENTIFY data
+ * @offset_words: Offset of the string to get, in words.
+ * @dest: Destination buffer for the string.
+ * @dest_len: Length of destination buffer, in bytes.
+ *
+ * Copies the ATA string from @identify located at @offset_words into @dest.
+ */
+static void disk_identify_get_string(uint8_t identify[512],
+ unsigned int offset_words,
+ char *dest,
+ size_t dest_len)
+{
+ unsigned int c1;
+ unsigned int c2;
+
+ while (dest_len > 0) {
+ c1 = identify[offset_words * 2 + 1];
+ c2 = identify[offset_words * 2];
+ *dest = c1;
+ dest++;
+ *dest = c2;
+ dest++;
+ offset_words++;
+ dest_len -= 2;
+ }
+}
+
+static void disk_identify_fixup_string(uint8_t identify[512],
+ unsigned int offset_words,
+ size_t len)
+{
+ disk_identify_get_string(identify, offset_words,
+ (char *) identify + offset_words * 2, len);
+}
+
+static void disk_identify_fixup_uint16 (uint8_t identify[512], unsigned int offset_words)
+{
+ uint16_t *p;
+
+ p = (uint16_t *) identify;
+ p[offset_words] = le16toh (p[offset_words]);
+}
+
+/**
+ * disk_identify:
+ * @udev: The libudev context.
+ * @fd: File descriptor for the block device.
+ * @out_identify: Return location for IDENTIFY data.
+ * @out_is_packet_device: Return location for whether returned data is from a IDENTIFY PACKET DEVICE.
+ *
+ * Sends the IDENTIFY DEVICE or IDENTIFY PACKET DEVICE command to the
+ * device represented by @fd. If successful, then the result will be
+ * copied into @out_identify and @out_is_packet_device.
+ *
+ * This routine is based on code from libatasmart, Copyright 2008
+ * Lennart Poettering, LGPL v2.1.
+ *
+ * Returns: 0 if the data was successfully obtained, otherwise
+ * non-zero with errno set.
+ */
+static int disk_identify(struct udev *udev,
+ int fd,
+ uint8_t out_identify[512],
+ int *out_is_packet_device)
+{
+ int ret;
+ uint8_t inquiry_buf[36];
+ int peripheral_device_type;
+ int all_nul_bytes;
+ int n;
+ int is_packet_device = 0;
+
+ /* init results */
+ memzero(out_identify, 512);
+
+ /* If we were to use ATA PASS_THROUGH (12) on an ATAPI device
+ * we could accidentally blank media. This is because MMC's BLANK
+ * command has the same op-code (0x61).
+ *
+ * To prevent this from happening we bail out if the device
+ * isn't a Direct Access Block Device, e.g. SCSI type 0x00
+ * (CD/DVD devices are type 0x05). So we send a SCSI INQUIRY
+ * command first... libata is handling this via its SCSI
+ * emulation layer.
+ *
+ * This also ensures that we're actually dealing with a device
+ * that understands SCSI commands.
+ *
+ * (Yes, it is a bit perverse that we're tunneling the ATA
+ * command through SCSI and relying on the ATA driver
+ * emulating SCSI well-enough...)
+ *
+ * (See commit 160b069c25690bfb0c785994c7c3710289179107 for
+ * the original bug-fix and see http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=556635
+ * for the original bug-report.)
+ */
+ ret = disk_scsi_inquiry_command (fd, inquiry_buf, sizeof (inquiry_buf));
+ if (ret != 0)
+ goto out;
+
+ /* SPC-4, section 6.4.2: Standard INQUIRY data */
+ peripheral_device_type = inquiry_buf[0] & 0x1f;
+ if (peripheral_device_type == 0x05)
+ {
+ is_packet_device = 1;
+ ret = disk_identify_packet_device_command(fd, out_identify, 512);
+ goto check_nul_bytes;
+ }
+ if (peripheral_device_type != 0x00) {
+ ret = -1;
+ errno = EIO;
+ goto out;
+ }
+
+ /* OK, now issue the IDENTIFY DEVICE command */
+ ret = disk_identify_command(fd, out_identify, 512);
+ if (ret != 0)
+ goto out;
+
+ check_nul_bytes:
+ /* Check if IDENTIFY data is all NUL bytes - if so, bail */
+ all_nul_bytes = 1;
+ for (n = 0; n < 512; n++) {
+ if (out_identify[n] != '\0') {
+ all_nul_bytes = 0;
+ break;
+ }
+ }
+
+ if (all_nul_bytes) {
+ ret = -1;
+ errno = EIO;
+ goto out;
+ }
+
+out:
+ if (out_is_packet_device != NULL)
+ *out_is_packet_device = is_packet_device;
+ return ret;
+}
+
+int main(int argc, char *argv[])
+{
+ _cleanup_udev_unref_ struct udev *udev = NULL;
+ struct hd_driveid id;
+ union {
+ uint8_t byte[512];
+ uint16_t wyde[256];
+ } identify;
+ char model[41];
+ char model_enc[256];
+ char serial[21];
+ char revision[9];
+ const char *node = NULL;
+ int export = 0;
+ _cleanup_close_ int fd = -1;
+ uint16_t word;
+ int is_packet_device = 0;
+ static const struct option options[] = {
+ { "export", no_argument, NULL, 'x' },
+ { "help", no_argument, NULL, 'h' },
+ {}
+ };
+
+ log_parse_environment();
+ log_open();
+
+ udev = udev_new();
+ if (udev == NULL)
+ return 0;
+
+ for (;;) {
+ int option;
+
+ option = getopt_long(argc, argv, "xh", options, NULL);
+ if (option == -1)
+ break;
+
+ switch (option) {
+ case 'x':
+ export = 1;
+ break;
+ case 'h':
+ printf("Usage: ata_id [--export] [--help] <device>\n"
+ " -x,--export print values as environment keys\n"
+ " -h,--help print this help text\n\n");
+ return 0;
+ }
+ }
+
+ node = argv[optind];
+ if (node == NULL) {
+ log_error("no node specified");
+ return 1;
+ }
+
+ fd = open(node, O_RDONLY|O_NONBLOCK|O_CLOEXEC);
+ if (fd < 0) {
+ log_error("unable to open '%s'", node);
+ return 1;
+ }
+
+ if (disk_identify(udev, fd, identify.byte, &is_packet_device) == 0) {
+ /*
+ * fix up only the fields from the IDENTIFY data that we are going to
+ * use and copy it into the hd_driveid struct for convenience
+ */
+ disk_identify_fixup_string(identify.byte, 10, 20); /* serial */
+ disk_identify_fixup_string(identify.byte, 23, 8); /* fwrev */
+ disk_identify_fixup_string(identify.byte, 27, 40); /* model */
+ disk_identify_fixup_uint16(identify.byte, 0); /* configuration */
+ disk_identify_fixup_uint16(identify.byte, 75); /* queue depth */
+ disk_identify_fixup_uint16(identify.byte, 76); /* SATA capabilities */
+ disk_identify_fixup_uint16(identify.byte, 82); /* command set supported */
+ disk_identify_fixup_uint16(identify.byte, 83); /* command set supported */
+ disk_identify_fixup_uint16(identify.byte, 84); /* command set supported */
+ disk_identify_fixup_uint16(identify.byte, 85); /* command set supported */
+ disk_identify_fixup_uint16(identify.byte, 86); /* command set supported */
+ disk_identify_fixup_uint16(identify.byte, 87); /* command set supported */
+ disk_identify_fixup_uint16(identify.byte, 89); /* time required for SECURITY ERASE UNIT */
+ disk_identify_fixup_uint16(identify.byte, 90); /* time required for enhanced SECURITY ERASE UNIT */
+ disk_identify_fixup_uint16(identify.byte, 91); /* current APM values */
+ disk_identify_fixup_uint16(identify.byte, 94); /* current AAM value */
+ disk_identify_fixup_uint16(identify.byte, 108); /* WWN */
+ disk_identify_fixup_uint16(identify.byte, 109); /* WWN */
+ disk_identify_fixup_uint16(identify.byte, 110); /* WWN */
+ disk_identify_fixup_uint16(identify.byte, 111); /* WWN */
+ disk_identify_fixup_uint16(identify.byte, 128); /* device lock function */
+ disk_identify_fixup_uint16(identify.byte, 217); /* nominal media rotation rate */
+ memcpy(&id, identify.byte, sizeof id);
+ } else {
+ /* If this fails, then try HDIO_GET_IDENTITY */
+ if (ioctl(fd, HDIO_GET_IDENTITY, &id) != 0) {
+ log_debug_errno(errno, "HDIO_GET_IDENTITY failed for '%s': %m", node);
+ return 2;
+ }
+ }
+
+ memcpy(model, id.model, 40);
+ model[40] = '\0';
+ udev_util_encode_string(model, model_enc, sizeof(model_enc));
+ util_replace_whitespace((char *) id.model, model, 40);
+ util_replace_chars(model, NULL);
+ util_replace_whitespace((char *) id.serial_no, serial, 20);
+ util_replace_chars(serial, NULL);
+ util_replace_whitespace((char *) id.fw_rev, revision, 8);
+ util_replace_chars(revision, NULL);
+
+ if (export) {
+ /* Set this to convey the disk speaks the ATA protocol */
+ printf("ID_ATA=1\n");
+
+ if ((id.config >> 8) & 0x80) {
+ /* This is an ATAPI device */
+ switch ((id.config >> 8) & 0x1f) {
+ case 0:
+ printf("ID_TYPE=cd\n");
+ break;
+ case 1:
+ printf("ID_TYPE=tape\n");
+ break;
+ case 5:
+ printf("ID_TYPE=cd\n");
+ break;
+ case 7:
+ printf("ID_TYPE=optical\n");
+ break;
+ default:
+ printf("ID_TYPE=generic\n");
+ break;
+ }
+ } else {
+ printf("ID_TYPE=disk\n");
+ }
+ printf("ID_BUS=ata\n");
+ printf("ID_MODEL=%s\n", model);
+ printf("ID_MODEL_ENC=%s\n", model_enc);
+ printf("ID_REVISION=%s\n", revision);
+ if (serial[0] != '\0') {
+ printf("ID_SERIAL=%s_%s\n", model, serial);
+ printf("ID_SERIAL_SHORT=%s\n", serial);
+ } else {
+ printf("ID_SERIAL=%s\n", model);
+ }
+
+ if (id.command_set_1 & (1<<5)) {
+ printf("ID_ATA_WRITE_CACHE=1\n");
+ printf("ID_ATA_WRITE_CACHE_ENABLED=%d\n", (id.cfs_enable_1 & (1<<5)) ? 1 : 0);
+ }
+ if (id.command_set_1 & (1<<10)) {
+ printf("ID_ATA_FEATURE_SET_HPA=1\n");
+ printf("ID_ATA_FEATURE_SET_HPA_ENABLED=%d\n", (id.cfs_enable_1 & (1<<10)) ? 1 : 0);
+
+ /*
+ * TODO: use the READ NATIVE MAX ADDRESS command to get the native max address
+ * so it is easy to check whether the protected area is in use.
+ */
+ }
+ if (id.command_set_1 & (1<<3)) {
+ printf("ID_ATA_FEATURE_SET_PM=1\n");
+ printf("ID_ATA_FEATURE_SET_PM_ENABLED=%d\n", (id.cfs_enable_1 & (1<<3)) ? 1 : 0);
+ }
+ if (id.command_set_1 & (1<<1)) {
+ printf("ID_ATA_FEATURE_SET_SECURITY=1\n");
+ printf("ID_ATA_FEATURE_SET_SECURITY_ENABLED=%d\n", (id.cfs_enable_1 & (1<<1)) ? 1 : 0);
+ printf("ID_ATA_FEATURE_SET_SECURITY_ERASE_UNIT_MIN=%d\n", id.trseuc * 2);
+ if ((id.cfs_enable_1 & (1<<1))) /* enabled */ {
+ if (id.dlf & (1<<8))
+ printf("ID_ATA_FEATURE_SET_SECURITY_LEVEL=maximum\n");
+ else
+ printf("ID_ATA_FEATURE_SET_SECURITY_LEVEL=high\n");
+ }
+ if (id.dlf & (1<<5))
+ printf("ID_ATA_FEATURE_SET_SECURITY_ENHANCED_ERASE_UNIT_MIN=%d\n", id.trsEuc * 2);
+ if (id.dlf & (1<<4))
+ printf("ID_ATA_FEATURE_SET_SECURITY_EXPIRE=1\n");
+ if (id.dlf & (1<<3))
+ printf("ID_ATA_FEATURE_SET_SECURITY_FROZEN=1\n");
+ if (id.dlf & (1<<2))
+ printf("ID_ATA_FEATURE_SET_SECURITY_LOCKED=1\n");
+ }
+ if (id.command_set_1 & (1<<0)) {
+ printf("ID_ATA_FEATURE_SET_SMART=1\n");
+ printf("ID_ATA_FEATURE_SET_SMART_ENABLED=%d\n", (id.cfs_enable_1 & (1<<0)) ? 1 : 0);
+ }
+ if (id.command_set_2 & (1<<9)) {
+ printf("ID_ATA_FEATURE_SET_AAM=1\n");
+ printf("ID_ATA_FEATURE_SET_AAM_ENABLED=%d\n", (id.cfs_enable_2 & (1<<9)) ? 1 : 0);
+ printf("ID_ATA_FEATURE_SET_AAM_VENDOR_RECOMMENDED_VALUE=%d\n", id.acoustic >> 8);
+ printf("ID_ATA_FEATURE_SET_AAM_CURRENT_VALUE=%d\n", id.acoustic & 0xff);
+ }
+ if (id.command_set_2 & (1<<5)) {
+ printf("ID_ATA_FEATURE_SET_PUIS=1\n");
+ printf("ID_ATA_FEATURE_SET_PUIS_ENABLED=%d\n", (id.cfs_enable_2 & (1<<5)) ? 1 : 0);
+ }
+ if (id.command_set_2 & (1<<3)) {
+ printf("ID_ATA_FEATURE_SET_APM=1\n");
+ printf("ID_ATA_FEATURE_SET_APM_ENABLED=%d\n", (id.cfs_enable_2 & (1<<3)) ? 1 : 0);
+ if ((id.cfs_enable_2 & (1<<3)))
+ printf("ID_ATA_FEATURE_SET_APM_CURRENT_VALUE=%d\n", id.CurAPMvalues & 0xff);
+ }
+ if (id.command_set_2 & (1<<0))
+ printf("ID_ATA_DOWNLOAD_MICROCODE=1\n");
+
+ /*
+ * Word 76 indicates the capabilities of a SATA device. A PATA device shall set
+ * word 76 to 0000h or FFFFh. If word 76 is set to 0000h or FFFFh, then
+ * the device does not claim compliance with the Serial ATA specification and words
+ * 76 through 79 are not valid and shall be ignored.
+ */
+
+ word = identify.wyde[76];
+ if (word != 0x0000 && word != 0xffff) {
+ printf("ID_ATA_SATA=1\n");
+ /*
+ * If bit 2 of word 76 is set to one, then the device supports the Gen2
+ * signaling rate of 3.0 Gb/s (see SATA 2.6).
+ *
+ * If bit 1 of word 76 is set to one, then the device supports the Gen1
+ * signaling rate of 1.5 Gb/s (see SATA 2.6).
+ */
+ if (word & (1<<2))
+ printf("ID_ATA_SATA_SIGNAL_RATE_GEN2=1\n");
+ if (word & (1<<1))
+ printf("ID_ATA_SATA_SIGNAL_RATE_GEN1=1\n");
+ }
+
+ /* Word 217 indicates the nominal media rotation rate of the device */
+ word = identify.wyde[217];
+ if (word == 0x0001)
+ printf ("ID_ATA_ROTATION_RATE_RPM=0\n"); /* non-rotating e.g. SSD */
+ else if (word >= 0x0401 && word <= 0xfffe)
+ printf ("ID_ATA_ROTATION_RATE_RPM=%d\n", word);
+
+ /*
+ * Words 108-111 contain a mandatory World Wide Name (WWN) in the NAA IEEE Registered identifier
+ * format. Word 108 bits (15:12) shall contain 5h, indicating that the naming authority is IEEE.
+ * All other values are reserved.
+ */
+ word = identify.wyde[108];
+ if ((word & 0xf000) == 0x5000) {
+ uint64_t wwwn;
+
+ wwwn = identify.wyde[108];
+ wwwn <<= 16;
+ wwwn |= identify.wyde[109];
+ wwwn <<= 16;
+ wwwn |= identify.wyde[110];
+ wwwn <<= 16;
+ wwwn |= identify.wyde[111];
+ printf("ID_WWN=0x%1$" PRIx64 "\n"
+ "ID_WWN_WITH_EXTENSION=0x%1$" PRIx64 "\n",
+ wwwn);
+ }
+
+ /* from Linux's include/linux/ata.h */
+ if (identify.wyde[0] == 0x848a ||
+ identify.wyde[0] == 0x844a ||
+ (identify.wyde[83] & 0xc004) == 0x4004)
+ printf("ID_ATA_CFA=1\n");
+ } else {
+ if (serial[0] != '\0')
+ printf("%s_%s\n", model, serial);
+ else
+ printf("%s\n", model);
+ }
+
+ return 0;
+}
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2024-11-07 12:54:31 +0000