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atasmart.c
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atasmart.c
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/*-*- Mode: C; c-basic-offset: 8 -*-*/
/***
This file is part of libatasmart.
Copyright 2008 Lennart Poettering
libatasmart is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as
published by the Free Software Foundation, either version 2.1 of the
License, or (at your option) any later version.
libatasmart 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with libatasmart. If not, If not, see
<http://www.gnu.org/licenses/>.
***/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <arpa/inet.h>
#include <stdlib.h>
#include <alloca.h>
#include <assert.h>
#include <fcntl.h>
#include <unistd.h>
#include <errno.h>
#include <string.h>
#include <stdio.h>
#include <sys/stat.h>
#include <sys/ioctl.h>
#include <scsi/scsi.h>
#include <scsi/sg.h>
#include <scsi/scsi_ioctl.h>
#include <linux/hdreg.h>
#include <linux/fs.h>
#include <sys/types.h>
#include <regex.h>
#include <sys/param.h>
#include <libudev.h>
#include "atasmart.h"
#ifndef STRPOOL
#define _P(x) x
#endif
#define SK_TIMEOUT 2000
typedef enum SkDirection {
SK_DIRECTION_NONE,
SK_DIRECTION_IN,
SK_DIRECTION_OUT,
_SK_DIRECTION_MAX
} SkDirection;
typedef enum SkDiskType {
/* These three will be autotested for: */
SK_DISK_TYPE_ATA_PASSTHROUGH_12, /* ATA passthrough over SCSI transport, 12-byte version */
SK_DISK_TYPE_ATA_PASSTHROUGH_16, /* ATA passthrough over SCSI transport, 16-byte version */
SK_DISK_TYPE_LINUX_IDE, /* Classic Linux /dev/hda ioctls */
/* These three will not be autotested for */
SK_DISK_TYPE_SUNPLUS, /* SunPlus USB/ATA bridges */
SK_DISK_TYPE_JMICRON, /* JMicron USB/ATA bridges */
SK_DISK_TYPE_BLOB, /* From a file */
SK_DISK_TYPE_NONE, /* No access method */
SK_DISK_TYPE_AUTO, /* We don't know yet */
_SK_DISK_TYPE_MAX,
_SK_DISK_TYPE_TEST_MAX = SK_DISK_TYPE_SUNPLUS /* only auto test until here */
} SkDiskType;
#if __BYTE_ORDER == __LITTLE_ENDIAN
#define MAKE_TAG(a,b,c,d) \
(((uint32_t) d << 24) | \
((uint32_t) c << 16) | \
((uint32_t) b << 8) | \
((uint32_t) a))
#else
#define MAKE_TAG(a,b,c,d) \
(((uint32_t) a << 24) | \
((uint32_t) b << 16) | \
((uint32_t) c << 8) | \
((uint32_t) d))
#endif
typedef enum SkBlobTag {
SK_BLOB_TAG_IDENTIFY = MAKE_TAG('I', 'D', 'F', 'Y'),
SK_BLOB_TAG_SMART_STATUS = MAKE_TAG('S', 'M', 'S', 'T'),
SK_BLOB_TAG_SMART_DATA = MAKE_TAG('S', 'M', 'D', 'T'),
SK_BLOB_TAG_SMART_THRESHOLDS = MAKE_TAG('S', 'M', 'T', 'H')
} SkBlobTag;
struct SkDisk {
char *name;
int fd;
SkDiskType type;
uint64_t size;
uint8_t identify[512];
uint8_t smart_data[512];
uint8_t smart_thresholds[512];
SkBool smart_initialized:1;
SkBool identify_valid:1;
SkBool smart_data_valid:1;
SkBool smart_thresholds_valid:1;
SkBool blob_smart_status:1;
SkBool blob_smart_status_valid:1;
SkBool attribute_verification_bad:1;
SkIdentifyParsedData identify_parsed_data;
SkSmartParsedData smart_parsed_data;
/* cache for commonly used attributes */
SkBool attribute_cache_valid:1;
SkBool bad_attribute_now:1;
SkBool bad_attribute_in_the_past:1;
SkBool reallocated_sector_count_found:1;
SkBool current_pending_sector_found:1;
uint64_t reallocated_sector_count;
uint64_t current_pending_sector;
void *blob;
};
/* ATA commands */
typedef enum SkAtaCommand {
SK_ATA_COMMAND_IDENTIFY_DEVICE = 0xEC,
SK_ATA_COMMAND_IDENTIFY_PACKET_DEVICE = 0xA1,
SK_ATA_COMMAND_SMART = 0xB0,
SK_ATA_COMMAND_CHECK_POWER_MODE = 0xE5
} SkAtaCommand;
/* ATA SMART subcommands (ATA8 7.52.1) */
typedef enum SkSmartCommand {
SK_SMART_COMMAND_READ_DATA = 0xD0,
SK_SMART_COMMAND_READ_THRESHOLDS = 0xD1,
SK_SMART_COMMAND_EXECUTE_OFFLINE_IMMEDIATE = 0xD4,
SK_SMART_COMMAND_ENABLE_OPERATIONS = 0xD8,
SK_SMART_COMMAND_DISABLE_OPERATIONS = 0xD9,
SK_SMART_COMMAND_RETURN_STATUS = 0xDA
} SkSmartCommand;
/* Hmm, if the data we parse is out of a certain range just consider it misparsed */
#define SK_MKELVIN_VALID_MIN ((uint64_t) ((-15LL*1000LL) + 273150LL))
#define SK_MKELVIN_VALID_MAX ((uint64_t) ((100LL*1000LL) + 273150LL))
#define SK_MSECOND_VALID_MIN 1ULL
#define SK_MSECOND_VALID_SHORT_MAX (60ULL * 60ULL * 1000ULL)
#define SK_MSECOND_VALID_LONG_MAX (30ULL * 365ULL * 24ULL * 60ULL * 60ULL * 1000ULL)
static int init_smart(SkDisk *d);
static const char *disk_type_to_human_string(SkDiskType type) {
/* %STRINGPOOLSTART% */
static const char* const map[_SK_DISK_TYPE_MAX] = {
[SK_DISK_TYPE_ATA_PASSTHROUGH_16] = "16 Byte SCSI ATA SAT Passthru",
[SK_DISK_TYPE_ATA_PASSTHROUGH_12] = "12 Byte SCSI ATA SAT Passthru",
[SK_DISK_TYPE_LINUX_IDE] = "Native Linux IDE",
[SK_DISK_TYPE_SUNPLUS] = "Sunplus SCSI ATA Passthru",
[SK_DISK_TYPE_JMICRON] = "JMicron SCSI ATA Passthru",
[SK_DISK_TYPE_BLOB] = "Blob",
[SK_DISK_TYPE_AUTO] = "Automatic",
[SK_DISK_TYPE_NONE] = "None"
};
/* %STRINGPOOLSTOP% */
if (type >= _SK_DISK_TYPE_MAX)
return NULL;
return _P(map[type]);
}
static const char *disk_type_to_prefix_string(SkDiskType type) {
/* %STRINGPOOLSTART% */
static const char* const map[_SK_DISK_TYPE_MAX] = {
[SK_DISK_TYPE_ATA_PASSTHROUGH_16] = "sat16",
[SK_DISK_TYPE_ATA_PASSTHROUGH_12] = "sat12",
[SK_DISK_TYPE_LINUX_IDE] = "linux-ide",
[SK_DISK_TYPE_SUNPLUS] = "sunplus",
[SK_DISK_TYPE_JMICRON] = "jmicron",
[SK_DISK_TYPE_NONE] = "none",
[SK_DISK_TYPE_AUTO] = "auto",
};
/* %STRINGPOOLSTOP% */
if (type >= _SK_DISK_TYPE_MAX)
return NULL;
return _P(map[type]);
}
static const char *disk_type_from_string(const char *s, SkDiskType *type) {
unsigned u;
assert(s);
assert(type);
for (u = 0; u < _SK_DISK_TYPE_MAX; u++) {
const char *t;
size_t l;
if (!(t = disk_type_to_prefix_string(u)))
continue;
l = strlen(t);
if (strncmp(s, t, l))
continue;
if (s[l] != ':')
continue;
*type = u;
return s + l + 1;
}
return NULL;
}
static SkBool disk_smart_is_available(SkDisk *d) {
return d->identify_valid && !!(d->identify[164] & 1);
}
static SkBool disk_smart_is_enabled(SkDisk *d) {
return d->identify_valid && !!(d->identify[170] & 1);
}
static SkBool disk_smart_is_conveyance_test_available(SkDisk *d) {
assert(d->smart_data_valid);
return !!(d->smart_data[367] & 32);
}
static SkBool disk_smart_is_short_and_extended_test_available(SkDisk *d) {
assert(d->smart_data_valid);
return !!(d->smart_data[367] & 16);
}
static SkBool disk_smart_is_start_test_available(SkDisk *d) {
assert(d->smart_data_valid);
return !!(d->smart_data[367] & 1);
}
static SkBool disk_smart_is_abort_test_available(SkDisk *d) {
assert(d->smart_data_valid);
return !!(d->smart_data[367] & 41);
}
static int disk_linux_ide_command(SkDisk *d, SkAtaCommand command, SkDirection direction, void* cmd_data, void* data, size_t *len) {
uint8_t *bytes = cmd_data;
int ret;
assert(d->type == SK_DISK_TYPE_LINUX_IDE);
switch (direction) {
case SK_DIRECTION_OUT:
/* We could use HDIO_DRIVE_TASKFILE here, but
* that's a deprecated ioctl(), hence we don't
* do it. And we don't need writing anyway. */
errno = ENOTSUP;
return -1;
case SK_DIRECTION_IN: {
uint8_t *ioctl_data;
/* We have HDIO_DRIVE_CMD which can only read, but not write,
* and cannot do LBA. We use it for all read commands. */
ioctl_data = alloca(4 + *len);
memset(ioctl_data, 0, 4 + *len);
ioctl_data[0] = (uint8_t) command; /* COMMAND */
ioctl_data[1] = ioctl_data[0] == WIN_SMART ? bytes[9] : bytes[3]; /* SECTOR/NSECTOR */
ioctl_data[2] = bytes[1]; /* FEATURE */
ioctl_data[3] = bytes[3]; /* NSECTOR */
if ((ret = ioctl(d->fd, HDIO_DRIVE_CMD, ioctl_data)) < 0)
return ret;
memset(bytes, 0, 12);
bytes[11] = ioctl_data[0];
bytes[1] = ioctl_data[1];
bytes[3] = ioctl_data[2];
memcpy(data, ioctl_data+4, *len);
return ret;
}
case SK_DIRECTION_NONE: {
uint8_t ioctl_data[7];
/* We have HDIO_DRIVE_TASK which can neither read nor
* write, but can do LBA. We use it for all commands that
* do neither read nor write */
memset(ioctl_data, 0, sizeof(ioctl_data));
ioctl_data[0] = (uint8_t) command; /* COMMAND */
ioctl_data[1] = bytes[1]; /* FEATURE */
ioctl_data[2] = bytes[3]; /* NSECTOR */
ioctl_data[3] = bytes[9]; /* LBA LOW */
ioctl_data[4] = bytes[8]; /* LBA MID */
ioctl_data[5] = bytes[7]; /* LBA HIGH */
ioctl_data[6] = bytes[10]; /* SELECT */
if ((ret = ioctl(d->fd, HDIO_DRIVE_TASK, ioctl_data)))
return ret;
memset(bytes, 0, 12);
bytes[11] = ioctl_data[0];
bytes[1] = ioctl_data[1];
bytes[3] = ioctl_data[2];
bytes[9] = ioctl_data[3];
bytes[8] = ioctl_data[4];
bytes[7] = ioctl_data[5];
bytes[10] = ioctl_data[6];
return ret;
}
default:
assert(FALSE);
return -1;
}
}
/* 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 = SK_TIMEOUT;
return ioctl(fd, SG_IO, &io_hdr);
}
static int disk_passthrough_16_command(SkDisk *d, SkAtaCommand command, SkDirection direction, void* cmd_data, void* data, size_t *len) {
uint8_t *bytes = cmd_data;
uint8_t cdb[16];
uint8_t sense[32];
uint8_t *desc = sense+8;
int ret;
static const int direction_map[] = {
[SK_DIRECTION_NONE] = SG_DXFER_NONE,
[SK_DIRECTION_IN] = SG_DXFER_FROM_DEV,
[SK_DIRECTION_OUT] = SG_DXFER_TO_DEV
};
assert(d->type == SK_DISK_TYPE_ATA_PASSTHROUGH_16);
/* ATA Pass-Through 16 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] = 0x85; /* OPERATION CODE: 16 byte pass through */
if (direction == SK_DIRECTION_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 == SK_DIRECTION_IN) {
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 == SK_DIRECTION_OUT) {
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[0]; /* FEATURES */
cdb[4] = bytes[1];
cdb[5] = bytes[2]; /* SECTORS */
cdb[6] = bytes[3];
cdb[8] = bytes[9]; /* LBA LOW */
cdb[10] = bytes[8]; /* LBA MID */
cdb[12] = bytes[7]; /* LBA HIGH */
cdb[13] = bytes[10] & 0x4F; /* SELECT */
cdb[14] = (uint8_t) command;
memset(sense, 0, sizeof(sense));
if ((ret = sg_io(d->fd, direction_map[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];
bytes[2] = desc[4];
bytes[3] = desc[5];
bytes[9] = desc[7];
bytes[8] = desc[9];
bytes[7] = desc[11];
bytes[10] = desc[12];
bytes[11] = desc[13];
return ret;
}
static int disk_passthrough_12_command(SkDisk *d, SkAtaCommand command, SkDirection 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;
static const int direction_map[] = {
[SK_DIRECTION_NONE] = SG_DXFER_NONE,
[SK_DIRECTION_IN] = SG_DXFER_FROM_DEV,
[SK_DIRECTION_OUT] = SG_DXFER_TO_DEV
};
assert(d->type == SK_DISK_TYPE_ATA_PASSTHROUGH_12);
/* 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 == SK_DIRECTION_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 == SK_DIRECTION_IN) {
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 == SK_DIRECTION_OUT) {
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(d->fd, direction_map[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;
}
static int disk_sunplus_command(SkDisk *d, SkAtaCommand command, SkDirection direction, void* cmd_data, void* data, size_t *len) {
uint8_t *bytes = cmd_data;
uint8_t cdb[12];
uint8_t sense[32], buf[8];
int ret;
static const int direction_map[] = {
[SK_DIRECTION_NONE] = SG_DXFER_NONE,
[SK_DIRECTION_IN] = SG_DXFER_FROM_DEV,
[SK_DIRECTION_OUT] = SG_DXFER_TO_DEV
};
assert(d->type == SK_DISK_TYPE_SUNPLUS);
/* SunplusIT specific SCSI ATA pass-thru. Inspired by smartmonutils' support for these bridges */
memset(cdb, 0, sizeof(cdb));
cdb[0] = 0xF8; /* OPERATION CODE: Sunplus specific */
cdb[1] = 0x00; /* Subcommand: Pass-thru */
cdb[2] = 0x22;
if (direction == SK_DIRECTION_NONE)
cdb[3] = 0x00; /* protocol */
else if (direction == SK_DIRECTION_IN)
cdb[3] = 0x10; /* protocol */
else if (direction == SK_DIRECTION_OUT)
cdb[3] = 0x11; /* protocol */
cdb[4] = bytes[3]; /* size? */
cdb[5] = bytes[1]; /* FEATURES */
cdb[6] = bytes[3]; /* SECTORS */
cdb[7] = bytes[9]; /* LBA LOW */
cdb[8] = bytes[8]; /* LBA MID */
cdb[9] = bytes[7]; /* LBA HIGH */
cdb[10] = bytes[10] | 0xA0; /* SELECT */
cdb[11] = (uint8_t) command;
memset(sense, 0, sizeof(sense));
/* Issue request */
if ((ret = sg_io(d->fd, direction_map[direction], cdb, sizeof(cdb), data, len ? *len : 0, sense, sizeof(sense))) < 0)
return ret;
memset(cdb, 0, sizeof(cdb));
cdb[0] = 0xF8;
cdb[1] = 0x00;
cdb[2] = 0x21;
memset(buf, 0, sizeof(buf));
/* Ask for response */
if ((ret = sg_io(d->fd, SG_DXFER_FROM_DEV, cdb, sizeof(cdb), buf, sizeof(buf), sense, sizeof(sense))) < 0)
return ret;
memset(bytes, 0, 12);
bytes[2] = buf[1]; /* ERROR */
bytes[3] = buf[2]; /* SECTORS */
bytes[9] = buf[3]; /* LBA LOW */
bytes[8] = buf[4]; /* LBA MID */
bytes[7] = buf[5]; /* LBA HIGH */
bytes[10] = buf[6]; /* SELECT */
bytes[11] = buf[7]; /* STATUS */
return ret;
}
static int disk_jmicron_command(SkDisk *d, SkAtaCommand command, SkDirection direction, void* cmd_data, void* _data, size_t *_len) {
uint8_t *bytes = cmd_data;
uint8_t cdb[12];
uint8_t sense[32];
uint8_t port;
int ret;
SkBool is_smart_status = FALSE;
void *data = _data;
size_t len = _len ? *_len : 0;
uint8_t smart_status = 0;
static const int direction_map[] = {
[SK_DIRECTION_NONE] = SG_DXFER_NONE,
[SK_DIRECTION_IN] = SG_DXFER_FROM_DEV,
[SK_DIRECTION_OUT] = SG_DXFER_TO_DEV
};
assert(d->type == SK_DISK_TYPE_JMICRON);
/* JMicron specific SCSI ATA pass-thru. Inspired by smartmonutils' support for these bridges */
memset(cdb, 0, sizeof(cdb));
cdb[0] = 0xdf; /* operation code */
cdb[1] = 0x10;
cdb[2] = 0x00;
cdb[3] = 0x00; /* size HI */
cdb[4] = sizeof(port); /* size LO */
cdb[5] = 0x00;
cdb[6] = 0x72; /* register address HI */
cdb[7] = 0x0f; /* register address LO */
cdb[8] = 0x00;
cdb[9] = 0x00;
cdb[10] = 0x00;
cdb[11] = 0xfd;
memset(sense, 0, sizeof(sense));
if ((ret = sg_io(d->fd, SG_DXFER_FROM_DEV, cdb, sizeof(cdb), &port, sizeof(port), sense, sizeof(sense))) < 0)
return ret;
/* Port & 0x04 is port #0, Port & 0x40 is port #1 */
if (!(port & 0x44))
return -EIO;
cdb[0] = 0xdf; /* OPERATION CODE: 12 byte pass through */
if (command == SK_ATA_COMMAND_SMART && bytes[1] == SK_SMART_COMMAND_RETURN_STATUS) {
/* We need to rewrite the SMART status request */
is_smart_status = TRUE;
direction = SK_DIRECTION_IN;
data = &smart_status;
len = sizeof(smart_status);
cdb[1] = 0x10;
} else if (direction == SK_DIRECTION_NONE)
cdb[1] = 0x10;
else if (direction == SK_DIRECTION_IN)
cdb[1] = 0x10;
else if (direction == SK_DIRECTION_OUT)
cdb[1] = 0x00;
cdb[2] = 0x00;
cdb[3] = (uint8_t) (len >> 8);
cdb[4] = (uint8_t) (len & 0xFF);
cdb[5] = bytes[1]; /* FEATURES */
cdb[6] = bytes[3]; /* SECTORS */
cdb[7] = bytes[9]; /* LBA LOW */
cdb[8] = bytes[8]; /* LBA MID */
cdb[9] = bytes[7]; /* LBA HIGH */
cdb[10] = bytes[10] | ((port & 0x04) ? 0xA0 : 0xB0); /* SELECT */
cdb[11] = (uint8_t) command;
memset(sense, 0, sizeof(sense));
if ((ret = sg_io(d->fd, direction_map[direction], cdb, sizeof(cdb), data, len, sense, sizeof(sense))) < 0)
return ret;
memset(bytes, 0, 12);
if (is_smart_status) {
if (smart_status == 0x01 || smart_status == 0xc2) {
bytes[7] = 0xc2; /* LBA HIGH */
bytes[8] = 0x4f; /* LBA MID */
} else if (smart_status == 0x00 || smart_status == 0x2c) {
bytes[7] = 0x2c; /* LBA HIGH */
bytes[8] = 0xf4; /* LBA MID */
} else
return -EIO;
} else {
uint8_t regbuf[16];
cdb[0] = 0xdf; /* operation code */
cdb[1] = 0x10;
cdb[2] = 0x00;
cdb[3] = 0x00; /* size HI */
cdb[4] = sizeof(regbuf); /* size LO */
cdb[5] = 0x00;
cdb[6] = (port & 0x04) ? 0x80 : 0x90; /* register address HI */
cdb[7] = 0x00; /* register address LO */
cdb[8] = 0x00;
cdb[9] = 0x00;
cdb[10] = 0x00;
cdb[11] = 0xfd;
if ((ret = sg_io(d->fd, SG_DXFER_FROM_DEV, cdb, sizeof(cdb), regbuf, sizeof(regbuf), sense, sizeof(sense))) < 0)
return ret;
bytes[2] = regbuf[14]; /* STATUS */
bytes[3] = regbuf[0]; /* SECTORS */
bytes[9] = regbuf[6]; /* LBA LOW */
bytes[8] = regbuf[4]; /* LBA MID */
bytes[7] = regbuf[10]; /* LBA HIGH */
bytes[10] = regbuf[9]; /* SELECT */
bytes[11] = regbuf[13]; /* ERROR */
}
return ret;
}
static int disk_command(SkDisk *d, SkAtaCommand command, SkDirection direction, void* cmd_data, void* data, size_t *len) {
static int (* const disk_command_table[_SK_DISK_TYPE_MAX]) (SkDisk *d, SkAtaCommand command, SkDirection direction, void* cmd_data, void* data, size_t *len) = {
[SK_DISK_TYPE_LINUX_IDE] = disk_linux_ide_command,
[SK_DISK_TYPE_ATA_PASSTHROUGH_12] = disk_passthrough_12_command,
[SK_DISK_TYPE_ATA_PASSTHROUGH_16] = disk_passthrough_16_command,
[SK_DISK_TYPE_SUNPLUS] = disk_sunplus_command,
[SK_DISK_TYPE_JMICRON] = disk_jmicron_command,
[SK_DISK_TYPE_BLOB] = NULL,
[SK_DISK_TYPE_AUTO] = NULL,
[SK_DISK_TYPE_NONE] = NULL
};
assert(d);
assert(d->type <= _SK_DISK_TYPE_MAX);
assert(direction <= _SK_DIRECTION_MAX);
assert(direction == SK_DIRECTION_NONE || (data && len && *len > 0));
assert(direction != SK_DIRECTION_NONE || (!data && !len));
if (!disk_command_table[d->type]) {
errno = -ENOTSUP;
return -1;
}
return disk_command_table[d->type](d, command, direction, cmd_data, data, len);
}
static int disk_identify_device(SkDisk *d) {
uint16_t cmd[6];
int ret;
size_t len = 512;
const uint8_t *p;
if (d->type == SK_DISK_TYPE_BLOB)
return 0;
memset(d->identify, 0, len);
memset(cmd, 0, sizeof(cmd));
cmd[1] = htons(1);
if ((ret = disk_command(d, SK_ATA_COMMAND_IDENTIFY_DEVICE, SK_DIRECTION_IN, cmd, d->identify, &len)) < 0)
return ret;
if (len != 512) {
errno = EIO;
return -1;
}
/* Check if IDENTIFY data is all NULs */
for (p = d->identify; p < (const uint8_t*) d->identify+len; p++)
if (*p) {
p = NULL;
break;
}
if (p) {
errno = EIO;
return -1;
}
d->identify_valid = TRUE;
return 0;
}
int sk_disk_check_sleep_mode(SkDisk *d, SkBool *awake) {
int ret;
uint16_t cmd[6];
uint8_t status;
if (!d->identify_valid) {
errno = ENOTSUP;
return -1;
}
if (d->type == SK_DISK_TYPE_BLOB) {
errno = ENOTSUP;
return -1;
}
memset(cmd, 0, sizeof(cmd));
if ((ret = disk_command(d, SK_ATA_COMMAND_CHECK_POWER_MODE, SK_DIRECTION_NONE, cmd, NULL, 0)) < 0)
return ret;
if (cmd[0] != 0 || (ntohs(cmd[5]) & 1) != 0) {
errno = EIO;
return -1;
}
status = ntohs(cmd[1]) & 0xFF;
*awake = status == 0xFF || status == 0x80; /* idle and active/idle is considered awake */
return 0;
}
static int disk_smart_enable(SkDisk *d, SkBool b) {
uint16_t cmd[6];
if (!disk_smart_is_available(d)) {
errno = ENOTSUP;
return -1;
}
if (d->type == SK_DISK_TYPE_BLOB) {
errno = ENOTSUP;
return -1;
}
memset(cmd, 0, sizeof(cmd));
cmd[0] = htons(b ? SK_SMART_COMMAND_ENABLE_OPERATIONS : SK_SMART_COMMAND_DISABLE_OPERATIONS);
cmd[2] = htons(0x0000U);
cmd[3] = htons(0x00C2U);
cmd[4] = htons(0x4F00U);
return disk_command(d, SK_ATA_COMMAND_SMART, SK_DIRECTION_NONE, cmd, NULL, 0);
}
int sk_disk_smart_read_data(SkDisk *d) {
uint16_t cmd[6];
int ret;
size_t len = 512;
if (init_smart(d) < 0)
return -1;
if (!disk_smart_is_available(d)) {
errno = ENOTSUP;
return -1;
}
if (d->type == SK_DISK_TYPE_BLOB)
return 0;
memset(cmd, 0, sizeof(cmd));
cmd[0] = htons(SK_SMART_COMMAND_READ_DATA);
cmd[1] = htons(1);
cmd[2] = htons(0x0000U);
cmd[3] = htons(0x00C2U);
cmd[4] = htons(0x4F00U);
if ((ret = disk_command(d, SK_ATA_COMMAND_SMART, SK_DIRECTION_IN, cmd, d->smart_data, &len)) < 0)
return ret;
d->smart_data_valid = TRUE;
return ret;
}
static int disk_smart_read_thresholds(SkDisk *d) {
uint16_t cmd[6];
int ret;
size_t len = 512;
if (!disk_smart_is_available(d)) {
errno = ENOTSUP;
return -1;
}
if (d->type == SK_DISK_TYPE_BLOB)
return 0;
memset(cmd, 0, sizeof(cmd));
cmd[0] = htons(SK_SMART_COMMAND_READ_THRESHOLDS);
cmd[1] = htons(1);
cmd[2] = htons(0x0000U);
cmd[3] = htons(0x00C2U);
cmd[4] = htons(0x4F00U);
if ((ret = disk_command(d, SK_ATA_COMMAND_SMART, SK_DIRECTION_IN, cmd, d->smart_thresholds, &len)) < 0)
return ret;
d->smart_thresholds_valid = TRUE;
return ret;
}
int sk_disk_smart_status(SkDisk *d, SkBool *good) {
uint16_t cmd[6];
int ret;
if (init_smart(d) < 0)
return -1;
if (!disk_smart_is_available(d)) {
errno = ENOTSUP;
return -1;
}
if (d->type == SK_DISK_TYPE_BLOB) {
if (d->blob_smart_status_valid) {
*good = d->blob_smart_status;
return 0;
}
errno = ENXIO;
return -1;
}
memset(cmd, 0, sizeof(cmd));
cmd[0] = htons(SK_SMART_COMMAND_RETURN_STATUS);
cmd[1] = htons(0x0000U);
cmd[3] = htons(0x00C2U);
cmd[4] = htons(0x4F00U);
if ((ret = disk_command(d, SK_ATA_COMMAND_SMART, SK_DIRECTION_NONE, cmd, NULL, 0)) < 0)
return ret;
/* SAT/USB bridges truncate packets, so we only check for 4F,
* not for 2C on those */
if ((d->type == SK_DISK_TYPE_ATA_PASSTHROUGH_12 || cmd[3] == htons(0x00C2U)) &&
cmd[4] == htons(0x4F00U))
*good = TRUE;
else if ((d->type == SK_DISK_TYPE_ATA_PASSTHROUGH_12 || cmd[3] == htons(0x002CU)) &&
cmd[4] == htons(0xF400U))
*good = FALSE;
else {
errno = EIO;
return -1;
}
return ret;
}
int sk_disk_smart_self_test(SkDisk *d, SkSmartSelfTest test) {
uint16_t cmd[6];
int ret;
if (init_smart(d) < 0)
return -1;
if (!disk_smart_is_available(d)) {
errno = ENOTSUP;
return -1;
}
if (d->type == SK_DISK_TYPE_BLOB) {
errno = ENOTSUP;
return -1;
}
if (!d->smart_data_valid)
if ((ret = sk_disk_smart_read_data(d)) < 0)
return -1;
assert(d->smart_data_valid);
if (test != SK_SMART_SELF_TEST_SHORT &&
test != SK_SMART_SELF_TEST_EXTENDED &&
test != SK_SMART_SELF_TEST_CONVEYANCE &&
test != SK_SMART_SELF_TEST_ABORT) {
errno = EINVAL;
return -1;
}
if (!disk_smart_is_start_test_available(d)
|| (test == SK_SMART_SELF_TEST_ABORT && !disk_smart_is_abort_test_available(d))
|| ((test == SK_SMART_SELF_TEST_SHORT || test == SK_SMART_SELF_TEST_EXTENDED) && !disk_smart_is_short_and_extended_test_available(d))
|| (test == SK_SMART_SELF_TEST_CONVEYANCE && !disk_smart_is_conveyance_test_available(d))) {
errno = ENOTSUP;
return -1;
}
if (test == SK_SMART_SELF_TEST_ABORT &&
!disk_smart_is_abort_test_available(d)) {
errno = ENOTSUP;
return -1;
}
memset(cmd, 0, sizeof(cmd));
cmd[0] = htons(SK_SMART_COMMAND_EXECUTE_OFFLINE_IMMEDIATE);
cmd[2] = htons(0x0000U);
cmd[3] = htons(0x00C2U);
cmd[4] = htons(0x4F00U | (uint16_t) test);
return disk_command(d, SK_ATA_COMMAND_SMART, SK_DIRECTION_NONE, cmd, NULL, NULL);
}
static void swap_strings(char *s, size_t len) {
assert((len & 1) == 0);
for (; len > 0; s += 2, len -= 2) {
char t;
t = s[0];
s[0] = s[1];