linux - How to get hard disk serial number using Python -
how can serial number of hard disk drive using python on linux?
i use python module instead of running external program such hdparm. perhaps using fcntl module?
linux
as suggested, fcntl way on linux. c code want translate looks this:
static struct hd_driveid hd; int fd; if ((fd = open("/dev/hda", o_rdonly | o_nonblock)) < 0) { printf("error opening /dev/hda\n"); exit(1); } if (!ioctl(fd, hdio_get_identity, &hd)) { printf("%.20s\n", hd.serial_no); } else if (errno == -enomsg) { printf("no serial number available\n"); } else { perror("error: hdio_get_identity"); exit(1); } translated python on ubuntu 9.10, goes little this:
import sys, os, fcntl, struct if os.geteuid() > 0: print("error: must root use") sys.exit(1) open(sys.argv[1], "rb") fd: # tediously derived monster struct defined in <hdreg.h> # see comment @ end of file verify hd_driveid_format_str = "@ 10h 20s 3h 8s 40s 2b h 2b h 4b 6h 2b 36h q 152h" # <hdreg.h> hdio_get_identity = 0x030d # how big buffer need? sizeof_hd_driveid = struct.calcsize(hd_driveid_format_str) # ensure our format string correct size # 512 extracted using sizeof(struct hd_id) in c code assert sizeof_hd_driveid == 512 # call native function buf = fcntl.ioctl(fd, hdio_get_identity, " " * sizeof_hd_driveid) fields = struct.unpack(hd_driveid_format_str, buf) serial_no = fields[10].strip() model = fields[15].strip() print("hard disk model: %s" % model) print(" serial number: %s" % serial_no) ## documentation purposes, struct copied <hdreg.h> # struct hd_driveid { # unsigned short config; /* lots of obsolete bit flags */ # unsigned short cyls; /* obsolete, "physical" cyls */ # unsigned short reserved2; /* reserved (word 2) */ # unsigned short heads; /* obsolete, "physical" heads */ # unsigned short track_bytes; /* unformatted bytes per track */ # unsigned short sector_bytes; /* unformatted bytes per sector */ # unsigned short sectors; /* obsolete, "physical" sectors per track */ # unsigned short vendor0; /* vendor unique */ # unsigned short vendor1; /* vendor unique */ # unsigned short vendor2; /* retired vendor unique */ # unsigned char serial_no[20]; /* 0 = not_specified */ # unsigned short buf_type; /* retired */ # unsigned short buf_size; /* retired, 512 byte increments # * 0 = not_specified # */ # unsigned short ecc_bytes; /* r/w long cmds; 0 = not_specified */ # unsigned char fw_rev[8]; /* 0 = not_specified */ # unsigned char model[40]; /* 0 = not_specified */ # unsigned char max_multsect; /* 0=not_implemented */ # unsigned char vendor3; /* vendor unique */ # unsigned short dword_io; /* 0=not_implemented; 1=implemented */ # unsigned char vendor4; /* vendor unique */ # unsigned char capability; /* (upper byte of word 49) # * 3: iordysup # * 2: iordysw # * 1: lba # * 0: dma # */ # unsigned short reserved50; /* reserved (word 50) */ # unsigned char vendor5; /* obsolete, vendor unique */ # unsigned char tpio; /* obsolete, 0=slow, 1=medium, 2=fast */ # unsigned char vendor6; /* obsolete, vendor unique */ # unsigned char tdma; /* obsolete, 0=slow, 1=medium, 2=fast */ # unsigned short field_valid; /* (word 53) # * 2: ultra_ok word 88 # * 1: eide_ok words 64-70 # * 0: cur_ok words 54-58 # */ # unsigned short cur_cyls; /* obsolete, logical cylinders */ # unsigned short cur_heads; /* obsolete, l heads */ # unsigned short cur_sectors; /* obsolete, l sectors per track */ # unsigned short cur_capacity0; /* obsolete, l total sectors on drive */ # unsigned short cur_capacity1; /* obsolete, (2 words, misaligned int) */ # unsigned char multsect; /* current multiple sector count */ # unsigned char multsect_valid; /* when (bit0==1) multsect ok */ # unsigned int lba_capacity; /* obsolete, total number of sectors */ # unsigned short dma_1word; /* obsolete, single-word dma info */ # unsigned short dma_mword; /* multiple-word dma info */ # unsigned short eide_pio_modes; /* bits 0:mode3 1:mode4 */ # unsigned short eide_dma_min; /* min mword dma cycle time (ns) */ # unsigned short eide_dma_time; /* recommended mword dma cycle time (ns) */ # unsigned short eide_pio; /* min cycle time (ns), no iordy */ # unsigned short eide_pio_iordy; /* min cycle time (ns), iordy */ # unsigned short words69_70[2]; /* reserved words 69-70 # * future command overlap , queuing # */ # unsigned short words71_74[4]; /* reserved words 71-74 # * identify packet device command # */ # unsigned short queue_depth; /* (word 75) # * 15:5 reserved # * 4:0 maximum queue depth -1 # */ # unsigned short words76_79[4]; /* reserved words 76-79 */ # unsigned short major_rev_num; /* (word 80) */ # unsigned short minor_rev_num; /* (word 81) */ # unsigned short command_set_1; /* (word 82) supported # * 15: obsolete # * 14: nop command # * 13: read_buffer # * 12: write_buffer # * 11: obsolete # * 10: host protected area # * 9: device reset # * 8: service interrupt # * 7: release interrupt # * 6: look-ahead # * 5: write cache # * 4: packet command # * 3: power management feature set # * 2: removable feature set # * 1: security feature set # * 0: smart feature set # */ # unsigned short command_set_2; /* (word 83) # * 15: shall 0 # * 14: shall 1 # * 13: flush cache ext # * 12: flush cache # * 11: device configuration overlay # * 10: 48-bit address feature set # * 9: automatic acoustic management # * 8: set max security # * 7: reserved 1407dt parties # * 6: setf sub-command power-up # * 5: power-up in standby feature set # * 4: removable media notification # * 3: apm feature set # * 2: cfa feature set # * 1: read/write dma queued # * 0: download microcode # */ # unsigned short cfsse; /* (word 84) # * cmd set-feature supported extensions # * 15: shall 0 # * 14: shall 1 # * 13:6 reserved # * 5: general purpose logging # * 4: streaming feature set # * 3: media card pass through # * 2: media serial number valid # * 1: smart selt-test supported # * 0: smart error logging # */ # unsigned short cfs_enable_1; /* (word 85) # * command set-feature enabled # * 15: obsolete # * 14: nop command # * 13: read_buffer # * 12: write_buffer # * 11: obsolete # * 10: host protected area # * 9: device reset # * 8: service interrupt # * 7: release interrupt # * 6: look-ahead # * 5: write cache # * 4: packet command # * 3: power management feature set # * 2: removable feature set # * 1: security feature set # * 0: smart feature set # */ # unsigned short cfs_enable_2; /* (word 86) # * command set-feature enabled # * 15: shall 0 # * 14: shall 1 # * 13: flush cache ext # * 12: flush cache # * 11: device configuration overlay # * 10: 48-bit address feature set # * 9: automatic acoustic management # * 8: set max security # * 7: reserved 1407dt parties # * 6: setf sub-command power-up # * 5: power-up in standby feature set # * 4: removable media notification # * 3: apm feature set # * 2: cfa feature set # * 1: read/write dma queued # * 0: download microcode # */ # unsigned short csf_default; /* (word 87) # * command set-feature default # * 15: shall 0 # * 14: shall 1 # * 13:6 reserved # * 5: general purpose logging enabled # * 4: valid configure stream executed # * 3: media card pass through enabled # * 2: media serial number valid # * 1: smart selt-test supported # * 0: smart error logging # */ # unsigned short dma_ultra; /* (word 88) */ # unsigned short trseuc; /* time required security erase */ # unsigned short trseuc; /* time required enhanced erase */ # unsigned short curapmvalues; /* current apm values */ # unsigned short mprc; /* master password revision code */ # unsigned short hw_config; /* hardware config (word 93) # * 15: shall 0 # * 14: shall 1 # * 13: # * 12: # * 11: # * 10: # * 9: # * 8: # * 7: # * 6: # * 5: # * 4: # * 3: # * 2: # * 1: # * 0: shall 1 # */ # unsigned short acoustic; /* (word 94) # * 15:8 vendor's recommended value # * 7:0 current value # */ # unsigned short msrqs; /* min stream request size */ # unsigned short sxfert; /* stream transfer time */ # unsigned short sal; /* stream access latency */ # unsigned int spg; /* stream performance granularity */ # unsigned long long lba_capacity_2;/* 48-bit total number of sectors */ # unsigned short words104_125[22];/* reserved words 104-125 */ # unsigned short last_lun; /* (word 126) */ # unsigned short word127; /* (word 127) feature set # * removable media notification # * 15:2 reserved # * 1:0 00 = not supported # * 01 = supported # * 10 = reserved # * 11 = reserved # */ # unsigned short dlf; /* (word 128) # * device lock function # * 15:9 reserved # * 8 security level 1:max 0:high # * 7:6 reserved # * 5 enhanced erase # * 4 expire # * 3 frozen # * 2 locked # * 1 en/disabled # * 0 capability # */ # unsigned short csfo; /* (word 129) # * current set features options # * 15:4 reserved # * 3: auto reassign # * 2: reverting # * 1: read-look-ahead # * 0: write cache # */ # unsigned short words130_155[26];/* reserved vendor words 130-155 */ # unsigned short word156; /* reserved vendor word 156 */ # unsigned short words157_159[3];/* reserved vendor words 157-159 */ # unsigned short cfa_power; /* (word 160) cfa power mode # * 15 word 160 supported # * 14 reserved # * 13 # * 12 # * 11:0 # */ # unsigned short words161_175[15];/* reserved cfa */ # unsigned short words176_205[30];/* current media serial number */ # unsigned short words206_254[49];/* reserved words 206-254 */ # unsigned short integrity_word; /* (word 255) # * 15:8 checksum # * 7:0 signature # */ # }; apologies length, thought useful include original c struct comment. also, i'm pretty new both fcntl , struct modules, may doing unidomatic. in anycase, run command-line (with root privelidges) looks (i've redacted exact serial privacy):
fmark@fmark-laptop:~/desktop/hdserial$ sudo python hd.py "/dev/sda" hard disk model: fujitsu mhv2080bh pl serial number: nw-------- what's going on here?
in order able understand going on here, need @ #include <linux/hdreg.h> in original c program. include imports hdio_get_identity constant , struct hd_driveid. i've copied struct comment python sourcecode above, won't repeat here. find out going on hdio_get_identity, grep source-code (on ubuntu @ /usr/include/linux/hdreg.h. should find this:
#define hdio_get_identity 0x030d /* ide identification info */ thus, find hdio_get_identity constant tells fcntl interested in getting hd info. notice, same value (0x030d integer in hexadecimal notation) assigned variable in python code.
windows
i realise interested in linux, i'll keep here posterity. following hdd serial number on windows (you need install wmi package):
import wmi c = wmi.wmi() item in c.win32_physicalmedia(): print item
Comments
Post a Comment