diff options
author | Kay Sievers <kay.sievers@vrfy.org> | 2012-03-07 16:46:55 +0100 |
---|---|---|
committer | Kay Sievers <kay.sievers@vrfy.org> | 2012-03-07 17:03:48 +0100 |
commit | 6997e3b2dc0095985071e2f7496342a850cdb5ad (patch) | |
tree | 17cf3c0444e3c1c34a784730e61243ef2b2a6c71 /src/ata_id/ata_id.c | |
parent | 4683a5fa066d49b5d8f78639a22eddf6b226f443 (diff) |
move src/extras subdirectories to src/
Diffstat (limited to 'src/ata_id/ata_id.c')
-rw-r--r-- | src/ata_id/ata_id.c | 726 |
1 files changed, 726 insertions, 0 deletions
diff --git a/src/ata_id/ata_id.c b/src/ata_id/ata_id.c new file mode 100644 index 0000000000..257f494496 --- /dev/null +++ b/src/ata_id/ata_id.c @@ -0,0 +1,726 @@ +/* + * 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) 2009-2010 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 <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 <linux/cdrom.h> +#include <linux/bsg.h> +#include <arpa/inet.h> + +#include "libudev.h" +#include "libudev-private.h" + +#define COMMAND_TIMEOUT_MSEC (30 * 1000) + +static int disk_scsi_inquiry_command(int fd, + void *buf, + size_t buf_len) +{ + struct sg_io_v4 io_v4; + uint8_t cdb[6]; + uint8_t sense[32]; + int ret; + + /* + * INQUIRY, see SPC-4 section 6.4 + */ + memset(cdb, 0, sizeof(cdb)); + cdb[0] = 0x12; /* OPERATION CODE: INQUIRY */ + cdb[3] = (buf_len >> 8); /* ALLOCATION LENGTH */ + cdb[4] = (buf_len & 0xff); + + memset(sense, 0, sizeof(sense)); + + memset(&io_v4, 0, sizeof(struct sg_io_v4)); + io_v4.guard = 'Q'; + io_v4.protocol = BSG_PROTOCOL_SCSI; + io_v4.subprotocol = BSG_SUB_PROTOCOL_SCSI_CMD; + io_v4.request_len = sizeof (cdb); + io_v4.request = (uintptr_t) cdb; + io_v4.max_response_len = sizeof (sense); + io_v4.response = (uintptr_t) sense; + io_v4.din_xfer_len = buf_len; + io_v4.din_xferp = (uintptr_t) buf; + io_v4.timeout = COMMAND_TIMEOUT_MSEC; + + 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; + + memset(&io_hdr, 0, sizeof(struct sg_io_hdr)); + io_hdr.interface_id = 'S'; + io_hdr.cmdp = (unsigned char*) cdb; + io_hdr.cmd_len = sizeof (cdb); + io_hdr.dxferp = buf; + io_hdr.dxfer_len = buf_len; + io_hdr.sbp = sense; + io_hdr.mx_sb_len = sizeof (sense); + io_hdr.dxfer_direction = SG_DXFER_FROM_DEV; + io_hdr.timeout = COMMAND_TIMEOUT_MSEC; + + ret = ioctl(fd, SG_IO, &io_hdr); + if (ret != 0) + goto out; + + /* 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; + ret = -1; + goto out; + } + } else { + goto out; + } + } + + /* 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; + ret = -1; + goto out; + } + + out: + return ret; +} + +static int disk_identify_command(int fd, + void *buf, + size_t buf_len) +{ + struct sg_io_v4 io_v4; + 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 + * + * from 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 */ + 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 */ + cdb[3] = 0; /* FEATURES */ + cdb[4] = 1; /* SECTORS */ + cdb[5] = 0; /* LBA LOW */ + cdb[6] = 0; /* LBA MID */ + cdb[7] = 0; /* LBA HIGH */ + cdb[8] = 0 & 0x4F; /* SELECT */ + cdb[9] = 0xEC; /* Command: ATA IDENTIFY DEVICE */; + memset(sense, 0, sizeof(sense)); + + memset(&io_v4, 0, sizeof(struct sg_io_v4)); + io_v4.guard = 'Q'; + io_v4.protocol = BSG_PROTOCOL_SCSI; + io_v4.subprotocol = BSG_SUB_PROTOCOL_SCSI_CMD; + io_v4.request_len = sizeof (cdb); + io_v4.request = (uintptr_t) cdb; + io_v4.max_response_len = sizeof (sense); + io_v4.response = (uintptr_t) sense; + io_v4.din_xfer_len = buf_len; + io_v4.din_xferp = (uintptr_t) buf; + io_v4.timeout = COMMAND_TIMEOUT_MSEC; + + 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; + + memset(&io_hdr, 0, sizeof(struct sg_io_hdr)); + io_hdr.interface_id = 'S'; + io_hdr.cmdp = (unsigned char*) cdb; + io_hdr.cmd_len = sizeof (cdb); + io_hdr.dxferp = buf; + io_hdr.dxfer_len = buf_len; + io_hdr.sbp = sense; + io_hdr.mx_sb_len = sizeof (sense); + io_hdr.dxfer_direction = SG_DXFER_FROM_DEV; + io_hdr.timeout = COMMAND_TIMEOUT_MSEC; + + ret = ioctl(fd, SG_IO, &io_hdr); + if (ret != 0) + goto out; + } else { + goto out; + } + } + + if (!(sense[0] == 0x72 && desc[0] == 0x9 && desc[1] == 0x0c)) { + errno = EIO; + ret = -1; + goto out; + } + + out: + return ret; +} + +static int disk_identify_packet_device_command(int fd, + void *buf, + size_t buf_len) +{ + struct sg_io_v4 io_v4; + uint8_t cdb[16]; + uint8_t sense[32]; + uint8_t *desc = sense+8; + int ret; + + /* + * 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 + */ + memset(cdb, 0, sizeof(cdb)); + cdb[0] = 0x85; /* OPERATION CODE: 16 byte pass through */ + 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 */ + cdb[3] = 0; /* FEATURES */ + cdb[4] = 0; /* FEATURES */ + cdb[5] = 0; /* SECTORS */ + cdb[6] = 1; /* SECTORS */ + cdb[7] = 0; /* LBA LOW */ + cdb[8] = 0; /* LBA LOW */ + cdb[9] = 0; /* LBA MID */ + cdb[10] = 0; /* LBA MID */ + cdb[11] = 0; /* LBA HIGH */ + cdb[12] = 0; /* LBA HIGH */ + cdb[13] = 0; /* DEVICE */ + cdb[14] = 0xA1; /* Command: ATA IDENTIFY PACKET DEVICE */; + cdb[15] = 0; /* CONTROL */ + memset(sense, 0, sizeof(sense)); + + memset(&io_v4, 0, sizeof(struct sg_io_v4)); + io_v4.guard = 'Q'; + io_v4.protocol = BSG_PROTOCOL_SCSI; + io_v4.subprotocol = BSG_SUB_PROTOCOL_SCSI_CMD; + io_v4.request_len = sizeof (cdb); + io_v4.request = (uintptr_t) cdb; + io_v4.max_response_len = sizeof (sense); + io_v4.response = (uintptr_t) sense; + io_v4.din_xfer_len = buf_len; + io_v4.din_xferp = (uintptr_t) buf; + io_v4.timeout = COMMAND_TIMEOUT_MSEC; + + 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; + + memset(&io_hdr, 0, sizeof(struct sg_io_hdr)); + io_hdr.interface_id = 'S'; + io_hdr.cmdp = (unsigned char*) cdb; + io_hdr.cmd_len = sizeof (cdb); + io_hdr.dxferp = buf; + io_hdr.dxfer_len = buf_len; + io_hdr.sbp = sense; + io_hdr.mx_sb_len = sizeof (sense); + io_hdr.dxfer_direction = SG_DXFER_FROM_DEV; + io_hdr.timeout = COMMAND_TIMEOUT_MSEC; + + ret = ioctl(fd, SG_IO, &io_hdr); + if (ret != 0) + goto out; + } else { + goto out; + } + } + + if (!(sense[0] == 0x72 && desc[0] == 0x9 && desc[1] == 0x0c)) { + errno = EIO; + ret = -1; + goto out; + } + + out: + 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 = 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; + + assert(out_identify != NULL); + + /* init results */ + ret = -1; + memset(out_identify, '\0', 512); + is_packet_device = 0; + + /* 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; +} + +static void log_fn(struct udev *udev, int priority, + const char *file, int line, const char *fn, + const char *format, va_list args) +{ + vsyslog(priority, format, args); +} + +int main(int argc, char *argv[]) +{ + struct udev *udev; + struct hd_driveid id; + uint8_t identify[512]; + uint16_t *identify_words; + char model[41]; + char model_enc[256]; + char serial[21]; + char revision[9]; + const char *node = NULL; + int export = 0; + int fd; + uint16_t word; + int rc = 0; + int is_packet_device = 0; + static const struct option options[] = { + { "export", no_argument, NULL, 'x' }, + { "help", no_argument, NULL, 'h' }, + {} + }; + + udev = udev_new(); + if (udev == NULL) + goto exit; + + udev_log_init("ata_id"); + udev_set_log_fn(udev, log_fn); + + while (1) { + 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" + " --export print values as environment keys\n" + " --help print this help text\n\n"); + goto exit; + } + } + + node = argv[optind]; + if (node == NULL) { + err(udev, "no node specified\n"); + rc = 1; + goto exit; + } + + fd = open(node, O_RDONLY|O_NONBLOCK); + if (fd < 0) { + err(udev, "unable to open '%s'\n", node); + rc = 1; + goto exit; + } + + if (disk_identify(udev, fd, identify, &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, 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': %m\n", node); + rc = 3; + } + goto close; + } + } + identify_words = (uint16_t *) identify; + + 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 = *((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); + /* ATA devices have no vendor extension */ + printf("ID_WWN_WITH_EXTENSION=0x%llx\n", (unsigned long long int) wwwn); + } + + /* from Linux's include/linux/ata.h */ + if (identify_words[0] == 0x848a || identify_words[0] == 0x844a) { + printf("ID_ATA_CFA=1\n"); + } else { + if ((identify_words[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); + } +close: + close(fd); +exit: + udev_unref(udev); + udev_log_close(); + return rc; +} |