̾??

od —

SCSI ???ǥ??????ɥ饤??

????

device od

device od1 at scbus0 target 3
  lun 0

???? ASC/ASCQ ???֤??ɥ饤?Ф??Ȥ??ˤ? options OD_BOGUS_NOT_READY

??ư??ž???ߵ?ǽ???Ȥ??ˤ? options OD_AUTO_TURNOFF

????

od ?ɥ饤?Ф? SCSI ???ǥ????? (???????롢???????????Ѳ????إǥ?????) ?ɥ饤?֤򥵥ݡ??Ȥ??ޤ??? ???ǥ????θ򴹤䡢?ǥ???????ʬ?䤷?? ?ѡ??ƥ??????? ?ȸƤФ??뵿???ǥХ????˳??????Ƥ뤳?Ȥ???ǽ?ˤʤ??ޤ??? ?ѡ??ƥ????????ˤ? raw ???󥿥ե??????? ?֥??å??⡼?? ???󥿥ե????????????ޤ??? ???󥿥ե???????????Ū?? wd(4) ?? sd(4) ?ε??Ҥ?Ʊ?ͤǤ???

??ư???? SCSI ?????ץ????ץ????֤??????Ȥ????ǥХ????򸡽Ф??뤿???? SCSI ?Х???Ĵ?٤????ޤ??????Ф??줿???ΤΤ??? ‘Optical (??)’ ???? ‘removable (???곰????ǽ)’ ?????֤??????ɤΥǥХ????? od ?ɥ饤?Ф???³?????ޤ??? FreeBSD 2.1.5 ?ʹߤǤϡ??ǽ??˸??Ф??줿?ǥХ????? od0 ?Ȥ?????³???졢???? od1 ?Ȱʲ?Ʊ?ͤ?³???ޤ??? ?ǥХ??????ɤ? od ???˥åȤȤ??Ʋ?Ư???٤??????????Ǥ??ޤ??? ?????ͥ??ι????ˤĤ??Ƥξܺ٤? scsi(4) ?򻲾Ȥ??Ƥ????????? FreeBSD 2.2 ???? od ?ɥ饤?Ф? ‘Optical (??)’ ???? ‘removable (???곰????ǽ)’ ???????Ǥʤ??? ‘Direct (ľ??)’ ???? ‘removable (???곰????ǽ)’ ?????֤??????ɤ??ʥǥХ??????˥åȤ??????Ǥ??ޤ???

?ѡ??ƥ??????˥???

od ?ɥ饤?Фϥǥ????????Ф???2 ?Ĥγ??ؤΥѡ??ƥ??????󤬲?ǽ?Ǥ??? 1 ???ܤ??ؤ? “???饤????” ?ȸƤФ??????Τǡ? FreeBSD ?ΰ??Ȥ???¾?Υ??ڥ졼?ƥ??󥰥????ƥ??ǻ??Ѥ????Ƥ????ΰ??? ʬΥ???뤿?????Ѥ??ޤ??? 2 ???ܤϡ? disklabel(5) ?ˤ??????????? 4.4BSD ?Υѡ??ƥ??????˥󥰵????Ǥ??ꡢ FreeBSD ???饤?????ȼ??Υե????륷???ƥ??˺?ʬ???뤿?????Ѥ??ޤ??? ?ܺ٤ϡ? fdisk(8) ?????? disklabel(8) ?򤽤줾?컲?Ȥ??Ƥ?????????

???????????Ƥ??ʤ??ǥ????????????????ȡ??ǥ????????ΤޤǵڤֲͶ??? FreeBSD ???饤???ˤ??äơ????饤???ơ??֥뤬???????????ޤ??? Ʊ?ͤˡ????????????Ƥ??ʤ? (???뤤???? FreeBSD) ???饤?????????????ȡ??ɥ饤?֤????ӥ??饤?????Τ??ޤ?ñ?? ‘c’ ?ѡ??ƥ????????ˤ??ä??֤??????ѥ??᡼???ǡ??ǥ????????٥뤬???????????ޤ???

?????ͥ???????

?????ե??????? od ?ǥХ????? 1 ?Ĥ???ɬ?פǤ??????ʤ????ǡ?????¤?ϡ??ǥ??????? SCSI ?Х????˸??Ф??줿?Ȥ???ưŪ?˳??????Ƥ????ޤ???

IOCTL

???? ioctl(2) ????????¾?Υǥ??????????Ǥʤ??????ǥ??????ˤ??б????ޤ??? ???????ϥإå??ե????? ⟨sys/disklabel.h⟩ ???????????Ƥ??ޤ???

DIOCSBAD: ?̾?ǥ????????????ɥ֥??å??ޥåԥ󥰥????ƥ??????ꤹ?뤿?????Ѥ??????ޤ??? SCSI ?ɥ饤?Ф??ȼ??????ɥ֥??å??ޥåԥ󥰤??Ȥ߹????Τǡ? ?????ϼ????????Ƥ??ޤ????? ????????????Ū?ˤϡ? SCSI ???ɥ֥??å??ޥåԥ󥰤ؤ? '?н?Ū?? (kludged)' ???󥿥ե??????Ȥ??? ?????????뤫?⤷???ޤ?????
DIOCGDINFO: ?ɥ饤???ѤΥǥ????????٥??????????ԡ??򡢥????ͥ??򤫤??ɤ߹??ߤޤ??? ?ɥ饤?֤????????????Ƥ??ʤ????ϡ??Ͷ??Υǥ????????٥??Ǥ??뤫?⤷???ޤ????? ???ξ????ϡ?SCSI Ĵ?? (inquiry) ???ޥ??ɤ??ɤ߹????????????ޤߤޤ??? ?????Ƶ?ư????ɽ??????????????Ʊ???ˤʤ??ޤ???
DIOCSDINFO: ?ɥ饤?Ф˿??????ǥ????????٥???Ϳ???ޤ??? ?ɥ饤?Фϡ????????ǥ????????٥????ǥ??????˽񤭹??ߤޤ?????
DIOCWLABEL: ?ǥ????????Υǥ????????٥????Ф????ɥ饤?ФΥ??եȥ??????饤?ȥץ??ƥ??Ȥ??? ͭ???ޤ???̵???ˤ??ޤ???
DIOCWDINFO: ?ɥ饤?Ф˿??????ǥ????????٥???Ϳ???ޤ??? ?ɥ饤?Фϡ????????ǥ????????٥????ǥ??????˽񤭹??⤦?Ȥ??ޤ???

???? ioctl(2) ????????¾?Υǥ??????????Ǥʤ??????ǥ??????ˤ??б????ޤ??? ???????ϥإå??ե????? ⟨sys/cdio.h⟩ ???????????Ƥ??ޤ???

CDIOCEJECT: ???ǥ????????ӽФ??ޤ???
CDIOCALLOW: ?ɥ饤?֤??Ф??????ǥ??????μ?ư?ӽФ????Ĥ??ޤ???
CDIOCPREVENT: ?ɥ饤?֤??Ф??????ǥ??????μ?ư?ӽФ??ػߤ??ޤ???

?ä??ơ? scsi(4) ?ΰ???Ū?? ioctl ?? od ?ɥ饤?ФǻȤäƤ⹽???ޤ????? ?????? 4 ???ܤΥѡ??ƥ??????? (?ǥ?????????) ???????򤱤Ƥ?????????

??

???ߤΤȤ????? od ?ɥ饤?Ф? 512, 1024, 2048 ?Х???/???????Υ??ǥ??????б????Ƥ??ޤ??? raw ?????ӥ֥??å??⡼?ɤΥǥХ????ˤ????롢 ?? 512 ?Х???/???????Υ??ǥ????ؤΥ????????ϡ? ?ƥ??????????????????γ??ϰ??֤? I/O ???????˴ؤ??ƤΤ߲?ǽ?Ǥ???

??Ϣ?ե?????

/dev/rodu: raw ?⡼?ɤ? SCSI ???ǥ????????˥å? u ?Ǥ????ѡ??ƥ??????˥󥰤????Ƥ??ʤ??ǥХ????Ȥ??ƥ????????????ޤ???
/dev/odusn: ?֥??å??⡼?ɤ? SCSI ???ǥ????????˥å? u ???饤?? n ?Ǥ????ѡ??ƥ??????˥󥰤????Ƥ??ʤ??ǥХ????Ȥ??ƥ????????????ޤ???
/dev/rodusn: raw ?⡼?ɤ? SCSI ???ǥ????????˥å? u ???饤?? n ?Ǥ????ѡ??ƥ??????˥󥰤????Ƥ??ʤ??ǥХ????Ȥ??ƥ????????????ޤ???
/dev/odup: ?֥??å??⡼?ɤ? SCSI ???ǥ????????˥å? u ?κǽ??? FreeBSD ???饤???Υѡ??ƥ??????? p ?Ǥ???
/dev/rodup: raw ?⡼?ɤ? SCSI ???ǥ????????˥å? u ?κǽ??? FreeBSD ???饤???Υѡ??ƥ??????? p ?Ǥ???
/dev/odusnp: ?֥??å??⡼?ɤ? SCSI ???ǥ????????˥å? u ?? n ???ܤΥ??饤????¸?ߤ????ѡ??ƥ??????? p ?Ǥ???
/dev/rodusnp: raw ?⡼?ɤ?SCSI???ǥ????????˥å?u??n???ܤΥ??饤????¸?ߤ????ѡ??ƥ???????p?Ǥ???
/dev/rodu.ctl: scsi(8)?ǻȤ??????????ǥХ??????˥å?u?Ǥ???

????

?????ޤ?????

??Ϣ????

fdisk(1),cd(4),scsi(4),sd(4),disklabel(5),disklabel(8)

????

Shunsuke Akiyama <akiyama@jp.FreeBSD.org>

????

od?ɥ饤?Ф?FreeBSD2.1.5???о줷?ޤ?????