X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=extras%2Fata_id%2Fata_id.c;h=66b9f42332858d717e30fd3c1baead3f792231d5;hp=9644a45b19482422404bc0091ac92b4d5f5a8501;hb=66094a4a7fc1d303e80785d586800eae9841502b;hpb=495d408b36718ec68ed5a3d406bc2e74b7ffc219 diff --git a/extras/ata_id/ata_id.c b/extras/ata_id/ata_id.c index 9644a45b1..66b9f4233 100644 --- a/extras/ata_id/ata_id.c +++ b/extras/ata_id/ata_id.c @@ -2,6 +2,8 @@ * ata_id - reads product/serial number from ATA drives * * Copyright (C) 2005-2008 Kay Sievers + * Copyright (C) 2009 Lennart Poettering + * Copyright (C) 2009 David Zeuthen * * 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 @@ -17,27 +19,238 @@ * along with this program. If not, see . */ -#ifndef _GNU_SOURCE -#define _GNU_SOURCE 1 -#endif - #include #include +#include #include #include #include +#include #include #include #include +#include +#include +#include #include #include #include #include #include +#include +#include #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) @@ -49,6 +262,7 @@ int main(int argc, char *argv[]) { struct udev *udev; struct hd_driveid id; + uint8_t identify[512]; char model[41]; char model_enc[256]; char serial[21]; @@ -56,6 +270,7 @@ int main(int argc, char *argv[]) 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' }, @@ -105,15 +320,42 @@ int main(int argc, char *argv[]) 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); @@ -127,6 +369,9 @@ int main(int argc, char *argv[]) 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) { @@ -155,13 +400,122 @@ int main(int argc, char *argv[]) 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: