* ata_id - reads product/serial number from ATA drives
*
* Copyright (C) 2005-2008 Kay Sievers <kay.sievers@vrfy.org>
+ * Copyright (C) 2009 Lennart Poettering <lennart@poettering.net>
+ * Copyright (C) 2009 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
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
-#ifndef _GNU_SOURCE
-#define _GNU_SOURCE 1
-#endif
-
#include <stdio.h>
#include <stdlib.h>
+#include <stdint.h>
#include <unistd.h>
#include <fcntl.h>
#include <ctype.h>
+#include <assert.h>
#include <string.h>
#include <errno.h>
#include <getopt.h>
+#include <scsi/scsi.h>
+#include <scsi/sg.h>
+#include <scsi/scsi_ioctl.h>
#include <sys/ioctl.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <linux/types.h>
#include <linux/hdreg.h>
+#include <linux/fs.h>
+#include <arpa/inet.h>
#include "libudev.h"
#include "libudev-private.h"
+#define COMMAND_TIMEOUT 2000
+
+/* Sends a SCSI command block */
+static int sg_io(int fd, int direction,
+ const void *cdb, size_t cdb_len,
+ void *data, size_t data_len,
+ void *sense, size_t sense_len)
+{
+
+ struct sg_io_hdr io_hdr;
+
+ memset(&io_hdr, 0, sizeof(struct sg_io_hdr));
+ io_hdr.interface_id = 'S';
+ io_hdr.cmdp = (unsigned char*) cdb;
+ io_hdr.cmd_len = cdb_len;
+ io_hdr.dxferp = data;
+ io_hdr.dxfer_len = data_len;
+ io_hdr.sbp = sense;
+ io_hdr.mx_sb_len = sense_len;
+ io_hdr.dxfer_direction = direction;
+ io_hdr.timeout = COMMAND_TIMEOUT;
+ return ioctl(fd, SG_IO, &io_hdr);
+}
+
+static int disk_command(int fd, int command, int direction, void *cmd_data,
+ void *data, size_t *len)
+{
+ uint8_t *bytes = cmd_data;
+ uint8_t cdb[12];
+ uint8_t sense[32];
+ uint8_t *desc = sense+8;
+ int ret;
+
+ /*
+ * ATA Pass-Through 12 byte command, as described in "T10 04-262r8
+ * ATA Command Pass-Through":
+ * http://www.t10.org/ftp/t10/document.04/04-262r8.pdf
+ */
+ memset(cdb, 0, sizeof(cdb));
+ cdb[0] = 0xa1; /* OPERATION CODE: 12 byte pass through */
+ if (direction == SG_DXFER_NONE) {
+ cdb[1] = 3 << 1; /* PROTOCOL: Non-Data */
+ cdb[2] = 0x20; /* OFF_LINE=0, CK_COND=1, T_DIR=0, BYT_BLOK=0, T_LENGTH=0 */
+ } else if (direction == SG_DXFER_FROM_DEV) {
+ cdb[1] = 4 << 1; /* PROTOCOL: PIO Data-in */
+ cdb[2] = 0x2e; /* OFF_LINE=0, CK_COND=1, T_DIR=1, BYT_BLOK=1, T_LENGTH=2 */
+ } else if (direction == SG_DXFER_TO_DEV) {
+ cdb[1] = 5 << 1; /* PROTOCOL: PIO Data-Out */
+ cdb[2] = 0x26; /* OFF_LINE=0, CK_COND=1, T_DIR=0, BYT_BLOK=1, T_LENGTH=2 */
+ }
+ cdb[3] = bytes[1]; /* FEATURES */
+ cdb[4] = bytes[3]; /* SECTORS */
+ cdb[5] = bytes[9]; /* LBA LOW */
+ cdb[6] = bytes[8]; /* LBA MID */
+ cdb[7] = bytes[7]; /* LBA HIGH */
+ cdb[8] = bytes[10] & 0x4F; /* SELECT */
+ cdb[9] = (uint8_t) command;
+ memset(sense, 0, sizeof(sense));
+ if ((ret = sg_io(fd, direction, cdb, sizeof(cdb), data, len ? *len : 0, sense, sizeof(sense))) < 0)
+ return ret;
+ if (sense[0] != 0x72 || desc[0] != 0x9 || desc[1] != 0x0c) {
+ errno = EIO;
+ return -1;
+ }
+
+ memset(bytes, 0, 12);
+ bytes[1] = desc[3]; /* FEATURES */
+ bytes[2] = desc[4]; /* STATUS */
+ bytes[3] = desc[5]; /* SECTORS */
+ bytes[9] = desc[7]; /* LBA LOW */
+ bytes[8] = desc[9]; /* LBA MID */
+ bytes[7] = desc[11]; /* LBA HIGH */
+ bytes[10] = desc[12]; /* SELECT */
+ bytes[11] = desc[13]; /* ERROR */
+ return ret;
+}
+
+/**
+ * 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;
+
+ assert (identify != NULL);
+ assert (dest != NULL);
+ assert ((dest_len & 1) == 0);
+
+ while (dest_len > 0) {
+ c1 = ((uint16_t *) identify)[offset_words] >> 8;
+ c2 = ((uint16_t *) identify)[offset_words] & 0xff;
+ *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.
+ *
+ * Sends the IDENTIFY DEVICE command to the device represented by
+ * @fd. If successful, then the result will be copied into
+ * @out_identify.
+ *
+ * This routine is based on code from libatasmart, Copyright 2008
+ * Lennart Poettering, LGPL v2.1.
+ *
+ * Returns: 0 if the IDENTIFY 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 ret;
+ uint64_t size;
+ struct stat st;
+ uint16_t cmd[6];
+ size_t len = 512;
+ const uint8_t *p;
+
+ assert (out_identify != NULL);
+
+ /* init results */
+ ret = -1;
+ memset (out_identify, '\0', 512);
+
+ if ((ret = fstat(fd, &st)) < 0)
+ goto fail;
+
+ if (!S_ISBLK(st.st_mode)) {
+ errno = ENODEV;
+ goto fail;
+ }
+
+ /* So, it's a block device. Let's make sure the ioctls work */
+ if ((ret = ioctl(fd, BLKGETSIZE64, &size)) < 0)
+ goto fail;
+
+ if (size <= 0 || size == (uint64_t) -1) {
+ errno = EIO;
+ goto fail;
+ }
+
+ memset(cmd, 0, sizeof(cmd));
+ cmd[1] = htons(1);
+ ret = disk_command(fd,
+ 0xEC, /* IDENTIFY DEVICE command */
+ SG_DXFER_FROM_DEV, cmd,
+ out_identify, &len);
+ if (ret != 0)
+ goto fail;
+
+ if (len != 512) {
+ errno = EIO;
+ goto fail;
+ }
+
+ /* Check if IDENTIFY data is all NULs */
+ for (p = out_identify; p < (const uint8_t*) out_identify + len; p++) {
+ if (*p) {
+ p = NULL;
+ break;
+ }
+ }
+
+ if (p) {
+ errno = EIO;
+ goto fail;
+ }
+
+ ret = 0;
+fail:
+ return ret;
+}
+
static void log_fn(struct udev *udev, int priority,
const char *file, int line, const char *fn,
const char *format, va_list args)
{
struct udev *udev;
struct hd_driveid id;
+ uint8_t identify[512];
char model[41];
char model_enc[256];
char serial[21];
const char *node = NULL;
int export = 0;
int fd;
+ uint16_t word;
int rc = 0;
static const struct option options[] = {
{ "export", no_argument, NULL, 'x' },
goto exit;
}
- if (ioctl(fd, HDIO_GET_IDENTITY, &id)) {
- if (errno == ENOTTY) {
- info(udev, "HDIO_GET_IDENTITY unsupported for '%s'\n", node);
- rc = 2;
- } else {
- err(udev, "HDIO_GET_IDENTITY failed for '%s'\n", node);
- rc = 3;
+ if (disk_identify(udev, fd, identify) == 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, 10, 20); /* serial */
+ disk_identify_fixup_string (identify, 23, 6); /* fwrev */
+ disk_identify_fixup_string (identify, 27, 40); /* model */
+ disk_identify_fixup_uint16 (identify, 0); /* configuration */
+ disk_identify_fixup_uint16 (identify, 75); /* queue depth */
+ disk_identify_fixup_uint16 (identify, 75); /* SATA capabilities */
+ disk_identify_fixup_uint16 (identify, 82); /* command set supported */
+ disk_identify_fixup_uint16 (identify, 83); /* command set supported */
+ disk_identify_fixup_uint16 (identify, 84); /* command set supported */
+ disk_identify_fixup_uint16 (identify, 85); /* command set supported */
+ disk_identify_fixup_uint16 (identify, 86); /* command set supported */
+ disk_identify_fixup_uint16 (identify, 87); /* command set supported */
+ disk_identify_fixup_uint16 (identify, 89); /* time required for SECURITY ERASE UNIT */
+ disk_identify_fixup_uint16 (identify, 90); /* time required for enhanced SECURITY ERASE UNIT */
+ disk_identify_fixup_uint16 (identify, 91); /* current APM values */
+ disk_identify_fixup_uint16 (identify, 94); /* current AAM value */
+ disk_identify_fixup_uint16 (identify, 128); /* device lock function */
+ disk_identify_fixup_uint16 (identify, 217); /* nominal media rotation rate */
+ memcpy(&id, identify, sizeof id);
+ } else {
+ /* If this fails, then try HDIO_GET_IDENTITY */
+ if (ioctl(fd, HDIO_GET_IDENTITY, &id) != 0) {
+ if (errno == ENOTTY) {
+ info(udev, "HDIO_GET_IDENTITY unsupported for '%s'\n", node);
+ rc = 2;
+ } else {
+ err(udev, "HDIO_GET_IDENTITY failed for '%s'\n", node);
+ rc = 3;
+ }
+ goto close;
}
- goto close;
}
memcpy (model, id.model, 40);
udev_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) {
printf("ID_REVISION=%s\n", revision);
printf("ID_SERIAL=%s_%s\n", model, serial);
printf("ID_SERIAL_SHORT=%s\n", serial);
+
+ 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 = *((uint16_t *) identify + 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 = *((uint16_t *) identify + 217);
+ if (word != 0x0000) {
+ 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 = *((uint16_t *) identify + 108);
+ if ((word & 0xf000) == 0x5000) {
+ uint64_t wwwn;
+
+ wwwn = *((uint16_t *) identify + 108);
+ wwwn <<= 16;
+ wwwn |= *((uint16_t *) identify + 109);
+ wwwn <<= 16;
+ wwwn |= *((uint16_t *) identify + 110);
+ wwwn <<= 16;
+ wwwn |= *((uint16_t *) identify + 111);
+ printf("ID_WWN=0x%llx\n", (unsigned long long int) wwwn);
+ }
} else {
if (serial[0] != '\0')
printf("%s_%s\n", model, serial);
else
printf("%s\n", model);
}
-
close:
close(fd);
exit:
projects / systemd / commitdiff