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ata_id: export more advanced ATA features
This commit is contained in:
David Zeuthen
Kay Sievers
parent
495d408b36
commit
66094a4a7f
@ -2,6 +2,8 @@
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* ata_id - reads product/serial number from ATA drives
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*
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* Copyright (C) 2005-2008 Kay Sievers <kay.sievers@vrfy.org>
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* Copyright (C) 2009 Lennart Poettering <lennart@poettering.net>
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* Copyright (C) 2009 David Zeuthen <zeuthen@gmail.com>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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@ -17,27 +19,238 @@
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef _GNU_SOURCE
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#define _GNU_SOURCE 1
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#endif
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#include <stdio.h>
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#include <stdlib.h>
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#include <stdint.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <ctype.h>
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#include <assert.h>
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#include <string.h>
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#include <errno.h>
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#include <getopt.h>
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#include <scsi/scsi.h>
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#include <scsi/sg.h>
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#include <scsi/scsi_ioctl.h>
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#include <sys/ioctl.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <linux/types.h>
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#include <linux/hdreg.h>
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#include <linux/fs.h>
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#include <arpa/inet.h>
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#include "libudev.h"
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#include "libudev-private.h"
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#define COMMAND_TIMEOUT 2000
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/* Sends a SCSI command block */
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static int sg_io(int fd, int direction,
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const void *cdb, size_t cdb_len,
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void *data, size_t data_len,
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void *sense, size_t sense_len)
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{
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struct sg_io_hdr io_hdr;
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memset(&io_hdr, 0, sizeof(struct sg_io_hdr));
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io_hdr.interface_id = 'S';
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io_hdr.cmdp = (unsigned char*) cdb;
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io_hdr.cmd_len = cdb_len;
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io_hdr.dxferp = data;
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io_hdr.dxfer_len = data_len;
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io_hdr.sbp = sense;
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io_hdr.mx_sb_len = sense_len;
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io_hdr.dxfer_direction = direction;
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io_hdr.timeout = COMMAND_TIMEOUT;
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return ioctl(fd, SG_IO, &io_hdr);
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}
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static int disk_command(int fd, int command, int direction, void *cmd_data,
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void *data, size_t *len)
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{
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uint8_t *bytes = cmd_data;
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uint8_t cdb[12];
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uint8_t sense[32];
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uint8_t *desc = sense+8;
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int ret;
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/*
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* ATA Pass-Through 12 byte command, as described in "T10 04-262r8
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* ATA Command Pass-Through":
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* http://www.t10.org/ftp/t10/document.04/04-262r8.pdf
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*/
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memset(cdb, 0, sizeof(cdb));
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cdb[0] = 0xa1; /* OPERATION CODE: 12 byte pass through */
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if (direction == SG_DXFER_NONE) {
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cdb[1] = 3 << 1; /* PROTOCOL: Non-Data */
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cdb[2] = 0x20; /* OFF_LINE=0, CK_COND=1, T_DIR=0, BYT_BLOK=0, T_LENGTH=0 */
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} else if (direction == SG_DXFER_FROM_DEV) {
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cdb[1] = 4 << 1; /* PROTOCOL: PIO Data-in */
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cdb[2] = 0x2e; /* OFF_LINE=0, CK_COND=1, T_DIR=1, BYT_BLOK=1, T_LENGTH=2 */
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} else if (direction == SG_DXFER_TO_DEV) {
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cdb[1] = 5 << 1; /* PROTOCOL: PIO Data-Out */
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cdb[2] = 0x26; /* OFF_LINE=0, CK_COND=1, T_DIR=0, BYT_BLOK=1, T_LENGTH=2 */
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}
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cdb[3] = bytes[1]; /* FEATURES */
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cdb[4] = bytes[3]; /* SECTORS */
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cdb[5] = bytes[9]; /* LBA LOW */
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cdb[6] = bytes[8]; /* LBA MID */
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cdb[7] = bytes[7]; /* LBA HIGH */
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cdb[8] = bytes[10] & 0x4F; /* SELECT */
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cdb[9] = (uint8_t) command;
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memset(sense, 0, sizeof(sense));
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if ((ret = sg_io(fd, direction, cdb, sizeof(cdb), data, len ? *len : 0, sense, sizeof(sense))) < 0)
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return ret;
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if (sense[0] != 0x72 || desc[0] != 0x9 || desc[1] != 0x0c) {
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errno = EIO;
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return -1;
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}
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memset(bytes, 0, 12);
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bytes[1] = desc[3]; /* FEATURES */
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bytes[2] = desc[4]; /* STATUS */
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bytes[3] = desc[5]; /* SECTORS */
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bytes[9] = desc[7]; /* LBA LOW */
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bytes[8] = desc[9]; /* LBA MID */
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bytes[7] = desc[11]; /* LBA HIGH */
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bytes[10] = desc[12]; /* SELECT */
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bytes[11] = desc[13]; /* ERROR */
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return ret;
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}
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/**
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* disk_identify_get_string:
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* @identify: A block of IDENTIFY data
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* @offset_words: Offset of the string to get, in words.
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* @dest: Destination buffer for the string.
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* @dest_len: Length of destination buffer, in bytes.
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*
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* Copies the ATA string from @identify located at @offset_words into @dest.
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*/
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static void disk_identify_get_string (uint8_t identify[512],
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unsigned int offset_words,
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char *dest,
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size_t dest_len)
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{
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unsigned int c1;
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unsigned int c2;
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assert (identify != NULL);
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assert (dest != NULL);
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assert ((dest_len & 1) == 0);
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while (dest_len > 0) {
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c1 = ((uint16_t *) identify)[offset_words] >> 8;
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c2 = ((uint16_t *) identify)[offset_words] & 0xff;
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*dest = c1;
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dest++;
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*dest = c2;
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dest++;
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offset_words++;
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dest_len -= 2;
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}
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}
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static void disk_identify_fixup_string (uint8_t identify[512],
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unsigned int offset_words,
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size_t len)
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{
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disk_identify_get_string(identify, offset_words,
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(char *) identify + offset_words * 2, len);
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}
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static void disk_identify_fixup_uint16 (uint8_t identify[512], unsigned int offset_words)
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{
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uint16_t *p;
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p = (uint16_t *) identify;
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p[offset_words] = le16toh (p[offset_words]);
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}
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/**
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* disk_identify:
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* @udev: The libudev context.
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* @fd: File descriptor for the block device.
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* @out_identify: Return location for IDENTIFY data.
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*
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* Sends the IDENTIFY DEVICE command to the device represented by
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* @fd. If successful, then the result will be copied into
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* @out_identify.
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*
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* This routine is based on code from libatasmart, Copyright 2008
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* Lennart Poettering, LGPL v2.1.
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*
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* Returns: 0 if the IDENTIFY data was successfully obtained,
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* otherwise non-zero with errno set.
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*/
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static int disk_identify (struct udev *udev,
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int fd,
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uint8_t out_identify[512])
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{
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int ret;
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uint64_t size;
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struct stat st;
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uint16_t cmd[6];
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size_t len = 512;
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const uint8_t *p;
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assert (out_identify != NULL);
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/* init results */
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ret = -1;
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memset (out_identify, '\0', 512);
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if ((ret = fstat(fd, &st)) < 0)
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goto fail;
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if (!S_ISBLK(st.st_mode)) {
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errno = ENODEV;
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goto fail;
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}
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/* So, it's a block device. Let's make sure the ioctls work */
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if ((ret = ioctl(fd, BLKGETSIZE64, &size)) < 0)
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goto fail;
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if (size <= 0 || size == (uint64_t) -1) {
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errno = EIO;
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goto fail;
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}
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memset(cmd, 0, sizeof(cmd));
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cmd[1] = htons(1);
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ret = disk_command(fd,
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0xEC, /* IDENTIFY DEVICE command */
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SG_DXFER_FROM_DEV, cmd,
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out_identify, &len);
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if (ret != 0)
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goto fail;
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if (len != 512) {
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errno = EIO;
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goto fail;
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}
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/* Check if IDENTIFY data is all NULs */
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for (p = out_identify; p < (const uint8_t*) out_identify + len; p++) {
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if (*p) {
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p = NULL;
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break;
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}
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}
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if (p) {
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errno = EIO;
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goto fail;
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}
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ret = 0;
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fail:
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return ret;
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}
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static void log_fn(struct udev *udev, int priority,
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const char *file, int line, const char *fn,
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const char *format, va_list args)
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@ -49,6 +262,7 @@ int main(int argc, char *argv[])
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{
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struct udev *udev;
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struct hd_driveid id;
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uint8_t identify[512];
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char model[41];
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char model_enc[256];
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char serial[21];
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@ -56,6 +270,7 @@ int main(int argc, char *argv[])
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const char *node = NULL;
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int export = 0;
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int fd;
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uint16_t word;
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int rc = 0;
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static const struct option options[] = {
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{ "export", no_argument, NULL, 'x' },
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@ -105,15 +320,42 @@ int main(int argc, char *argv[])
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goto exit;
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}
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if (ioctl(fd, HDIO_GET_IDENTITY, &id)) {
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if (errno == ENOTTY) {
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info(udev, "HDIO_GET_IDENTITY unsupported for '%s'\n", node);
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rc = 2;
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} else {
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err(udev, "HDIO_GET_IDENTITY failed for '%s'\n", node);
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rc = 3;
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if (disk_identify(udev, fd, identify) == 0) {
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/*
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* fix up only the fields from the IDENTIFY data that we are going to
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* use and copy it into the hd_driveid struct for convenience
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*/
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disk_identify_fixup_string (identify, 10, 20); /* serial */
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disk_identify_fixup_string (identify, 23, 6); /* fwrev */
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disk_identify_fixup_string (identify, 27, 40); /* model */
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disk_identify_fixup_uint16 (identify, 0); /* configuration */
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disk_identify_fixup_uint16 (identify, 75); /* queue depth */
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disk_identify_fixup_uint16 (identify, 75); /* SATA capabilities */
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disk_identify_fixup_uint16 (identify, 82); /* command set supported */
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disk_identify_fixup_uint16 (identify, 83); /* command set supported */
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disk_identify_fixup_uint16 (identify, 84); /* command set supported */
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disk_identify_fixup_uint16 (identify, 85); /* command set supported */
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disk_identify_fixup_uint16 (identify, 86); /* command set supported */
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disk_identify_fixup_uint16 (identify, 87); /* command set supported */
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disk_identify_fixup_uint16 (identify, 89); /* time required for SECURITY ERASE UNIT */
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disk_identify_fixup_uint16 (identify, 90); /* time required for enhanced SECURITY ERASE UNIT */
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disk_identify_fixup_uint16 (identify, 91); /* current APM values */
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disk_identify_fixup_uint16 (identify, 94); /* current AAM value */
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disk_identify_fixup_uint16 (identify, 128); /* device lock function */
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disk_identify_fixup_uint16 (identify, 217); /* nominal media rotation rate */
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memcpy(&id, identify, sizeof id);
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} else {
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/* If this fails, then try HDIO_GET_IDENTITY */
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if (ioctl(fd, HDIO_GET_IDENTITY, &id) != 0) {
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if (errno == ENOTTY) {
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info(udev, "HDIO_GET_IDENTITY unsupported for '%s'\n", node);
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rc = 2;
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} else {
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err(udev, "HDIO_GET_IDENTITY failed for '%s'\n", node);
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rc = 3;
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}
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goto close;
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}
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goto close;
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}
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memcpy (model, id.model, 40);
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@ -127,6 +369,9 @@ int main(int argc, char *argv[])
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udev_util_replace_chars(revision, NULL);
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if (export) {
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/* Set this to convey the disk speaks the ATA protocol */
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printf("ID_ATA=1\n");
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if ((id.config >> 8) & 0x80) {
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/* This is an ATAPI device */
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switch ((id.config >> 8) & 0x1f) {
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@ -155,13 +400,122 @@ int main(int argc, char *argv[])
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printf("ID_REVISION=%s\n", revision);
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printf("ID_SERIAL=%s_%s\n", model, serial);
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printf("ID_SERIAL_SHORT=%s\n", serial);
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if (id.command_set_1 & (1<<5)) {
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printf ("ID_ATA_WRITE_CACHE=1\n");
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printf ("ID_ATA_WRITE_CACHE_ENABLED=%d\n", (id.cfs_enable_1 & (1<<5)) ? 1 : 0);
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}
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if (id.command_set_1 & (1<<10)) {
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printf("ID_ATA_FEATURE_SET_HPA=1\n");
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printf("ID_ATA_FEATURE_SET_HPA_ENABLED=%d\n", (id.cfs_enable_1 & (1<<10)) ? 1 : 0);
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/*
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* TODO: use the READ NATIVE MAX ADDRESS command to get the native max address
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* so it is easy to check whether the protected area is in use.
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*/
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}
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if (id.command_set_1 & (1<<3)) {
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printf("ID_ATA_FEATURE_SET_PM=1\n");
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printf("ID_ATA_FEATURE_SET_PM_ENABLED=%d\n", (id.cfs_enable_1 & (1<<3)) ? 1 : 0);
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}
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if (id.command_set_1 & (1<<1)) {
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printf("ID_ATA_FEATURE_SET_SECURITY=1\n");
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printf("ID_ATA_FEATURE_SET_SECURITY_ENABLED=%d\n", (id.cfs_enable_1 & (1<<1)) ? 1 : 0);
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printf("ID_ATA_FEATURE_SET_SECURITY_ERASE_UNIT_MIN=%d\n", id.trseuc * 2);
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if ((id.cfs_enable_1 & (1<<1))) /* enabled */ {
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if (id.dlf & (1<<8))
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printf("ID_ATA_FEATURE_SET_SECURITY_LEVEL=maximum\n");
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else
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printf("ID_ATA_FEATURE_SET_SECURITY_LEVEL=high\n");
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}
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if (id.dlf & (1<<5))
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printf("ID_ATA_FEATURE_SET_SECURITY_ENHANCED_ERASE_UNIT_MIN=%d\n", id.trsEuc * 2);
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if (id.dlf & (1<<4))
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printf("ID_ATA_FEATURE_SET_SECURITY_EXPIRE=1\n");
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if (id.dlf & (1<<3))
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printf("ID_ATA_FEATURE_SET_SECURITY_FROZEN=1\n");
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if (id.dlf & (1<<2))
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printf("ID_ATA_FEATURE_SET_SECURITY_LOCKED=1\n");
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}
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if (id.command_set_1 & (1<<0)) {
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printf("ID_ATA_FEATURE_SET_SMART=1\n");
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printf("ID_ATA_FEATURE_SET_SMART_ENABLED=%d\n", (id.cfs_enable_1 & (1<<0)) ? 1 : 0);
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}
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if (id.command_set_2 & (1<<9)) {
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printf("ID_ATA_FEATURE_SET_AAM=1\n");
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printf("ID_ATA_FEATURE_SET_AAM_ENABLED=%d\n", (id.cfs_enable_2 & (1<<9)) ? 1 : 0);
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printf("ID_ATA_FEATURE_SET_AAM_VENDOR_RECOMMENDED_VALUE=%d\n", id.acoustic >> 8);
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printf("ID_ATA_FEATURE_SET_AAM_CURRENT_VALUE=%d\n", id.acoustic & 0xff);
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}
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if (id.command_set_2 & (1<<5)) {
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printf("ID_ATA_FEATURE_SET_PUIS=1\n");
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printf("ID_ATA_FEATURE_SET_PUIS_ENABLED=%d\n", (id.cfs_enable_2 & (1<<5)) ? 1 : 0);
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}
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if (id.command_set_2 & (1<<3)) {
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printf("ID_ATA_FEATURE_SET_APM=1\n");
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printf("ID_ATA_FEATURE_SET_APM_ENABLED=%d\n", (id.cfs_enable_2 & (1<<3)) ? 1 : 0);
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if ((id.cfs_enable_2 & (1<<3)))
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printf("ID_ATA_FEATURE_SET_APM_CURRENT_VALUE=%d\n", id.CurAPMvalues & 0xff);
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}
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if (id.command_set_2 & (1<<0))
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printf("ID_ATA_DOWNLOAD_MICROCODE=1\n");
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/*
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* Word 76 indicates the capabilities of a SATA device. A PATA device shall set
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* word 76 to 0000h or FFFFh. If word 76 is set to 0000h or FFFFh, then
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* the device does not claim compliance with the Serial ATA specification and words
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* 76 through 79 are not valid and shall be ignored.
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*/
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word = *((uint16_t *) identify + 76);
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if (word != 0x0000 && word != 0xffff) {
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printf("ID_ATA_SATA=1\n");
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/*
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* If bit 2 of word 76 is set to one, then the device supports the Gen2
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* signaling rate of 3.0 Gb/s (see SATA 2.6).
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*
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* If bit 1 of word 76 is set to one, then the device supports the Gen1
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* signaling rate of 1.5 Gb/s (see SATA 2.6).
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*/
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if (word & (1<<2))
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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:
|
||||
|
||||
Loading…
Reference in New Issue
Block a user