.\" Copyright 1995 Robert K. Nichols (Robert.K.Nichols@att.com)
.\" Copyright 1999-2005 Kai Mơkisara (Kai.Makisara@kolumbus.fi)
.\"
.\" Permission is granted to make and distribute verbatim copies of this
.\" manual provided the copyright notice and this permission notice are
.\" preserved on all copies.
.\"
.\" Permission is granted to copy and distribute modified versions of this
.\" manual under the conditions for verbatim copying, provided that the
.\" entire resulting derived work is distributed under the terms of a
.\" permission notice identical to this one.
.\"
.\" Since the Linux kernel and libraries are constantly changing, this
.\" manual page may be incorrect or out-of-date.  The author(s) assume no
.\" responsibility for errors or omissions, or for damages resulting from
.\" the use of the information contained herein.  The author(s) may not
.\" have taken the same level of care in the production of this manual,
.\" which is licensed free of charge, as they might when working
.\" professionally.
.\"
.\" Formatted or processed versions of this manual, if unaccompanied by
.\" the source, must acknowledge the copyright and authors of this work.
.\"
.\" Japanese Version Last Modified Tue Feb 10 15:09:29 JST 1998
.\"	by ISHIKAWA Mutsumi <ishikawa@linux.or.jp>
.\" Updated Sun Mar 12 2000 by NAKANO Takeo <nakano@st.seikei.ac.jp>
.\" Updated Sun Apr 24 2005 by NAKANO Takeo <nakano@st.seikei.ac.jp
.\"
.TH ST 4  2007-12-16 "Linux" "Linux Programmer's Manual"
.SH ̾
st \- SCSI ơץǥХ
.SH 
.nf
.B #include <sys/mtio.h>
.sp
.BI "int ioctl(int " fd ", int " request " [, (void *)" arg3 "]);"
.BI "int ioctl(int " fd ", MTIOCTOP, (struct mtop *)" mt_cmd );
.BI "int ioctl(int " fd ", MTIOCGET, (struct mtget *)" mt_status );
.BI "int ioctl(int " fd ", MTIOCPOS, (struct mtpos *)" mt_pos );
.fi
.SH 
.B st
ɥ饤С͡ SCSI ơץǥХΥ󥿡ե󶡤롣
ߤǤϡɥ饤СϸФ줿Ƥ
\(lq󥷥륢 (sequential-access) \(rq פΥǥХؤ
Ԥ
.B st
ɥ饤Сϥ᥸㡼ǥХֹ 9 Ѥ롣
.PP
줾ΥǥХ 8 ĤΥޥʡǥХֹȤ
ޥʡֹ¦ 5 ӥåȤϡФ줿˳Ƥ롣
ͥ 2.6 Ǥϡ
¦ 8 ӥåȤ̤ˤӥåȷ 5 ӥåȤϢ (concatenate)
졢ơֹȤʤ롣
ޥʡֹϡ줾 4 ĤοʤĤΥåȤ
롼ʬ롣
 (ưᤷ) ǥХֹ
.IR n 
 \(lq󴬤ᤷ (no-rewind) \(rq ǥХֹ
.RI ( n " + 128)."
Ǥ롣
ܥǥХֹѤƥץ󤵤줿ǥХˤϡ

.B REWIND
ޥɤ롣
\(lq󴬤ᤷ\(rq ǥХֹѤƥץ󤵤줿
\s-1REWIND\s+1 ޥɤʤ
(ưᤷǥХơפΰַ (㤨 mt ) ѤƤ⡢
˾̤ʤơפ mt ޥɤθǴᤵ졢
ΥޥɤϥơפƬϤޤäƤޤ)
.PP
줾Υ롼פǡۤʤä (֥å̡
̩٤ʤ) ΥǥХ뤿 4 ĤΥޥʡֹ椬ѤǤ롣
ƥबưȤˤϡǽΥǥХȤ롣
¾ 3 ĤϥǥեȤƽƻȤ褦ˤʤ ()
(ѥѹ뤳Ȥˤäơơץɥ饤֤κȡ
줾Υɥ饤֤˳ƤޥʡֹθĿȤĴǤ롣
ǥեȤγƤǤ 32 ޤǤΥơץɥ饤֤Ǥ롣
㤨 64 ޤǤΥơץɥ饤֤򡢰ۤʤäץ
ĤΥޥʡֹ椹褦ˤǤ롣)
.PP
ǥХ̼Τ褦˺:
.in +4n
.nf

mknod \-m 666 /dev/st0 c 9 0
mknod \-m 666 /dev/st0l c 9 32
mknod \-m 666 /dev/st0m c 9 64
mknod \-m 666 /dev/st0a c 9 96
mknod \-m 666 /dev/nst0 c 9 128
mknod \-m 666 /dev/nst0l c 9 160
mknod \-m 666 /dev/nst0m c 9 192
mknod \-m 666 /dev/nst0a c 9 224
.fi
.in
.PP
ˤб֥åǥХ¸ߤʤ
.PP
ɥ饤ФХåեȤ礭ϾʤȤơפ
1 ֥åݻǤ褦˼롣 2.1.121 ΥͥǤϡ
ХåեϢ³ĤΥ֥åȤƳƤ롣ˡȡ
֥åκͤϥͥγƲǽϢ³֥å
¤롣¤ 32 ӥåȥƥǤ 128 kB
64 ӥåȥƥǤ 256 kB Ǥ롣ʹߤΥͥǤϡ
ɥ饤Фɬפ˱ƤĤˤ狼줿ХåեƤ롣
ǥեȤǤ 16 ĤޤǤʬʬǤ롣ʤ
֥åκͤ礭 (128 kB Υ֥å 16 Ĥ
Ƥ 2 MB Ȥʤ)
.PP
ɥ饤ФХåեΥϥѥ롣
ϥͥεưץˤäƾ񤭲ǽǤ롣
˥ɥ饤Фϼ¹Իˤ⡢ɬפ˱Ƥ礭ʰХåե
Ƥ褦Ȥ롣¹Ի礭Ϣ³֥å
Ƥ褦ȤȼԤ뤳ȤΤǡ 2.1.121
ΥͥǤϡưŪʥХåեƤϤޤꤢƤˤʤۤɤ
( kerneld  kmod ˤɥ饤ФΥǥޥɥɤ˴ؤƤƤϤޤ)
.PP
ɥ饤Фϥɥ饤֤Υ᡼ǥꤷƥݡȤ櫓ǤϤʤ
ƥबưȡơץǥХΥץ󤬥ɥ饤֤
ե०ˤä롣㤨С
ɥ饤֤Υե०Ĺ֥å⡼ɤ򤹤С
ơץǥХϸĹ֥å⡼ɤȤȤˤʤ롣Υץ
.BR ioctl (2)
Ū˻ȤѹǤ
ѹϥǥХƺƤӥץ󤵤줿ȤĤ롣
.\"nakano: դ
ץϡ
ưᤷǥХ󴬤ᤷǥХξ˱ƶ롣
.PP
4 ĤΥ֥롼פ줾ΥǥХФưۤʤ륪ץ
Ϳ뤳ȤǤ롣ץϥǥХץ󤵤줿Ȥ
Ϥȯ롣㤨СƥԤϤǥХ
Ŭʥ֥åθĹ֥å⡼ɤǽ񤭹褦
̤ΥǥХĹ֥å⡼ɤǽ񤭹褦ˤǤ (ɥ饤֤
ξΥ⡼ɤ򥵥ݡȤƤ)
.PP
Υɥ饤Фϡ
.B ơפΥѡƥ
򥵥ݡȤƤ (ɥ饤֤ݡȤƤ)
(ơפΥѡƥϥǥѡƥȤϤʤδطʤ
ѡƥ󲽤줿ơפϡĤΥǥʣơפ
¸ߤ뤫Τ褦˸롣)
ѡƥΥݡȤ
.BR ioctl (2)
ˤäͭˤǤ롣
ѡƥѹȡ
ơפΰ֤Ϥ줾Υѡƥ¸롣
ѡƥ
.BR ioctl (2)
ǹԤ
ʹߤΥơоݤϡΥѡƥˤʤ롣
ѡƥڤؤϡΥơƱ˹Ԥ졢
ɬפʥơװư򤷤ʤƤ褦ˤʤäƤ롣
ĤΥơפˤѡƥκ
ѥˤä (̾ 4)
ɥ饤Фˤϡơפ 1 Ĥޤ
2 ĤΥѡƥեޥåȤǤ褦
.BR ioctl (2)
ѰդƤ롣
.PP
̾ƥΥǥեȤΥơץǥХФϡɥ
ޤϥեȥ󥯤ȤơǥХ
.I /dev/tape
롣
.PP
ͥ 2.6.2 ʹߤǤϡΥɥ饤Ф sysfs ǥ쥯ȥ
.I /sys/class/scsi_tape
ˡåǥХȤΥǥХ˳Ƥѥ᡼򥨥ݡȤ롣
.SS ǡž
Υɥ饤ФϸĹ֥å⡼ɤȲĹ֥å⡼ɤ
ξ򥵥ݡȤƤ (ɥ饤֤ݡȤƤ)
Ĺ֥å⡼ɤǤϡɥ饤֤ϷޤäΥ֥å
(ʣ) 񤭹ࡣΥ֥å
write ƥॳΥХȿˤʤ
Ĺ֥å⡼ɤǤϡ
write 뤴Ȥ˰ĤΥơץ֥å˽񤭹ߤԤ롣
äƥХȿбơץ֥åΥ롣
ơ׾Υ֥åˤϡ񤭹ߥ⡼ɤξϰڴޤޤʤ
ɤ߹ߤΤȤ˽פʤȤϡơפΥ֥å
ޥɤȤɤǤ롣
.PP
Ĺ֥å⡼ɤǤϡɤ߹ߥХȿϥơפΥ֥å
ɬפƤʤƤɤХȿơפμΥ֥å
礭Сɥ饤ФϤΥǡ֤ؿϼºݤΥ֥å֤
֥åХȿ礭С׵ᤵ줿ʬΥǡ
֥åƬɤ߹ޤ֤졢֥åλĤ˴롣
.PP
Ĺ֥å⡼ɤǤϡХåե󥰤ͭˤʤäƤ
ɤ߹ߥХȿǤդ礭Ǥ褤Хåե󥰤̵ξϡ
ơפΥ֥åܤǤʤФʤʤ 2.1.121 
ͥǤϡХåե󥰤ͭʾˤ
ǤդΥХȿν񤭹ߤǤ롣¾ξ礹٤
(2.1.121 ΥͥǥХåե̵ʾȡͥξ)
Ǥϡ񤭹ߥХȿϥơץ֥åܤǤʤФʤʤ
.PP
2.6 ͥǤϡΥɥ饤Фϥ桼ХåեȥǥХ֤ǡ
ǡľž (direct transfer) ߤ롣
줬Բǽʾϡɥ饤ФХåեѤ롣
ľžǤʤͳȤƤϡ桼ХåեΥ饤ȤŬڤǤʤ
(ǥեȤ 512 ХȤ HBA ɥ饤ФˤäѹƤǽ)
桼ХåեΥڡΤɤ줫 SCSI ץ鸫ʤ
ʤɤͤ롣
.PP
ơפ򥯥ľΥơ̿᤬񤭹ߤǤС
եޡưŪ˥ơפؽ񤭹ޤ롣
.PP
ɤ߹߻˥եޡ˽в񤦤ȡʲ¹Ԥ롣
եޡդäȤ˥Хåե˥ǡĤäƤȡ
ХåեΥǡ֤롣ɤ߹ 0 ХȤ֤
μɤ߹ߤϼΥե뤫Υǡ֤
Ͽǡϡɤ߹³
0 ХȤ֤뤫Τ롣ܤɤ߹ߤϥ顼֤
.SS ioctl
ɥ饤Ф 3 Ĥ
.BR ioctl (2)
׵򥵥ݡȤƤ롣
.B st
ɥ饤Фˤäǧʤä׵
.B SCSI
ɥ饤Фˤ錄롣
ʲ
.I /usr/include/linux/mtio.h
ˤ롣
.SS "MTIOCTOP \(em ơμ¹"
.PP
׵
.I "(struct mtop *)"
ΰȤ롣ƤΥɥ饤֤Ƥ򥵥ݡȤƤ櫓ǤϤʤ
ɥ饤֤ݤȡɥ饤Ф
.B EIO
顼֤
.PP
.in +4n
.nf
/* Structure for MTIOCTOP \- mag tape op command: */
struct mtop {
    short   mt_op;       /* operations defined below */
    int     mt_count;    /* how many of them */
};
.fi
.in
.PP
̾ΥơѤΤμơ:
.TP 14
.B MTBSF
.I mt_count
ĤΥեޡ (filemark) ʬθڡ (backward space)
.TP
.B MTBSFM
.I mt_count
ĤΥեޡʬθڡ
ơפΰ֤ǸΥեޡ EOT ¦ѹ롣
.TP
.B MTBSR
.I mt_count
ĤΥ쥳 (ơץ֥å) ʬθڡ
.TP
.B MTBSS
.I mt_count
ĤΥåȥޡʬθڡ
.TP
.B MTCOMPRESSION
.I mt_count
 0 ʳʤ顢ɥ饤֤Υǡ̤ͭˤ롣
0 ʤ鰵̵̤ˤ롣Υޥɤ MODE ڡ 15 Ѥ롣
ϤۤȤɤ DAT ǥݡȤƤ롣
.TP
.B MTEOM
(եɲä뤿) ǥεϿʬκǸޤǿʤ롣
.TP
.B MTERASE
ơפƤõ롣
2.6 ͥǤϡ 0 ʤ short erase (ơפȰĤ)
Ԥʳξ long erase (Τõ) Ԥ
.TP
.B MTFSF
.I mt_count
ĤΥեޡʬڡ (forward space)
.TP
.B MTFSFM
.I mt_count
ĤΥեޡʬڡ
ơפΰ֤ϺǸΥեޡ BOT ¦ѹ롣
.TP
.B MTFSR
.I mt_count
ĤΥ쥳 (ơץ֥å) ʬڡ
.TP
.B MTFSS
.I mt_count
ĤΥåȥޡʬڡ
.TP
.B MTLOAD
SCSI ɥޥɤ¹Ԥ롣 HP ȥ˸¤äѤǤ롣
.\"nakano: äƤ롩
.I mt_count

.B MT_ST_HPLOADER_OFFSET
Ȥͤ¤Ǥ硢
οͤɥ饤֤졢ȥѤ롣
.TP
.B MTLOCK
ơץɥ饤֤å롣
.TP
.B MTMKPART
ơפ 1 ޤ 2 ѡƥ˥եޥåȤ롣
.I mt_count
 0 ǤʤС줬ǽΥѡƥΥͿ
ܤΥѡƥ󤬥ơפλĤˤʤ롣
.I mt_count
 0 ξϡơפϰĤΥѡƥȤƥեޥåȤ롣
ΥޥɤϡѡƥΥݡȤͭˤ줿
ɥ饤֤ǤʤлȤʤ (ʲ
.B MT_ST_CAN_PARTITIONS
򸫤)
.TP
.B MTNOP
Ԥʤ\- Ūʸ̤Ȥơɥ饤СΥХåե
եå夹롣
.B MTIOCGET
Ȥäƾ֤ɤ߽ФˤϤԤ٤Ǥ롣
.TP
.B MTOFFL
ᤷ (rewind) Ԥɥ饤֤򥪥ե饤 (off line) ˤ롣
.TP
.B MTRESET
ɥ饤֤ꥻåȤ롣
.TP
.B MTRETEN
ơפƥ󥷥 (re-tension) 
(ơפǸޤǴ塢ǽޤǴ᤹)
.TP
.B MTREW
ᤷ
.TP
.B MTSEEK
.I mt_count
ǻꤵ줿ơץ֥åֹ򥷡롣
ԤΤϡ \s-1LOCATE\s+1 ޥ (ǥХͭΥɥ쥹)
򥵥ݡȤ SCSI-2 ɥ饤֤뤤 Tandberg
ߴ SCSI-1 ɥ饤 (Tandberg, Archive, Viper, Wangtek,) Ǥ롣
ǥХͭΥɥ쥹ѤƤϡ֥åֹ
 \s-1MTIOCPOS\s+1 ˤä֤줿Τˤ٤Ǥ롣
.TP
.B MTSETBLK
.I mt_count
ͤɥ饤֤Υ֥åĹ (block length) ȤƥåȤ롣
֥åĹ 0 ˤȥɥ饤֤ϲĹ֥å⡼ɤ˥
Ȥ롣
.TP
.B MTSETDENSITY
ơ̩ (tape density) 
.I mt_count
Ǽ륳ɤѹ롣ɥ饤֤ǥݡȤƤ̩٥
ˤĤƤϡɥ饤֤ʸ˽񤤤Ƥ
.TP
.B MTSETPART
ƥ֤ʥѡƥ
.I mt_count
ܤڤؤ롣ѡƥ 0 롣
ΥޥɤϡѡƥΥݡȤͭˤ줿
ɥ饤֤ǤʤлȤʤ (ʲ
.B MT_ST_CAN_PARTITIONS
򸫤)
.TP
.B MTUNLOAD
SCSI unload ޥɤ¹Ԥ (ơפΥȤϹԤʤ)
.TP
.B MTUNLOCK
ơץɥ饤֤Υå롣
.TP
.B MTWEOF
.I mt_count
ĤΥեޡ񤭹ࡣ
.TP
.B MTWSM
.I mt_count
ĤΥåȥޡ񤭹ࡣ
.PP
ǥХץΤ (ѡ桼ˤ) ơ:
.TP 8
.B MTSETDRVBUFFER
ʥɥ饤֤ȥɥ饤СΥץ
.I mt_count
˥󥳡ɤ줿ƥӥåȤ˽äꤹ롣
ץˤϡɥ饤֤ΥХåե󥰥⡼ɡ
֡ͤΥɥ饤Хץν硢
Хåեν񤭹 (ǥեȤϥ֥å̩)
ॢͤޤޤ (ͥ 2.1 ʹ)
ѤΤϡ嵭ΥꥹȤΤɤ줫ĤǤ
(ʣΥ֡ͤϤޤȤưĤȴꤵ)
.IP
̤4ӥåȤǤͤϡ
ɥ饤֤ΥХåե󥰥⡼ɤ˻Ȥ롣
Хåե󥰥⡼ɤϰʲ̤:
.RS 12
.IP 0 4
ɥ饤֤ϥ饤ȥޥɤФ
ǡ֥åºݤΤ˽񤭹ޤޤ
.B GOOD
Υơ֤ʤ
.IP 1
ɥ饤֤ϥ饤ȥޥɤФ
٤ƤΥǡɥ饤֤ХåեžȤˡ
.B GOOD
Υơ֤ȤǤ롣
.IP 2
饤ȥޥɤФʲ 2 Ĥξ郎ä硢
ɥ饤֤Ϥ
.B GOOD
ơ֤Ǥ롣
(a) ٤ƤΥǡɥ饤֤Хåեž줿
(b) ̡Υ˥褿Хåեǡ
٤Τʤ񤭹ޤ줿
.RE
.IP
񤭹ͤ椹ˤϡ
.I mt_count
ˤϡ 
.B MT_ST_WRITE_THRESHOLD
ȥ֥åȤ
(OR) Ȥäͤ򲼰̤ 28ӥåȤ˴ޤޤͤФʤʤ
Υ֥åȤ 1024 Хȥ֥åñ̤ȤΤǡơפ
ʪ֥åñ̤ȤΤǤϤʤ
ޤͤϥɥ饤ФХåե (嵭)
ΥۤϤǤʤ
.IP
֡ͤΥե饰ꡦˤϡ
.I mt_count
ͤ
.BR MT_ST_BOOLEANS ,
.BR MT_ST_SETBOOLEANS ,
.BR MT_ST_CLEARBOOLEANS ,
.BR MT_ST_DEFBOOLEANS
Τ줫ĤͤˡʲΥץǤդȤ߹碌Ф
¤äΤꤹ롣
.BR MT_ST_BOOLEANS Ѥȡ
ץбӥåȤФƤͤǤ롣
.BR MT_ST_SETBOOLEANS Ѥȡ
ץŪꤵ졢
.BR MT_ST_DEFBOOLEANS Ѥ
Ū˲롣
.IP ""
ơץǥХΥǥեȤΥץ
.B MT_ST_DEFBOOLEANS
ˤäꤵ롣
ƥ֤ǤʤơץǥХ (: ޥʡֹ  32  160 ΥǥХ)
ϡФǥեȤΥץ󤬺ǽ줿Ȥ
ƥ֤ˤʤ롣ƥ֤ˤ줿ǥХϡ
ư˥ƥ֤ˤ줿ǥХ顢
Ū˻ꤵʤäץѾ롣
.IP ""
֡ͤΥץϰʲ̤:
.RS
.TP
.BR MT_ST_BUFFER_WRITES " (ǥե: )"
Ĺ֥å⡼ɤˤ뤹٤Ƥν񤭹Хåե󥰤롣
Υץ󤬵Ǥꡢĥɥ饤֤Ĺ֥åλϡ
٤Ƥν񤭹ϥ֥åܿ礭ǹԤʤФʤʤ
Τޥܥ塼ॢ֤񤭹िˤϡ
ΥץϵꤵƤʤФʤʤ
.BR MT_ST_ASYNC_WRITES " (ǥե: )"
Υץ󤬿λˤϡǡɥ饤ФΥХåե˼ޤˤ
ǡɥ饤֤žΤԤˡ˽񤭹֤ä롣
ХåեɤΤ餤鼡 SCSI write ޥɤȯԤǤ뤫ϡ
񤭹ͤˤäƷޤ롣
ɥ饤֤֤٤ƤΥ顼ϡޤ¸롣
Τޥܥ塼ॢ֤񤭹िˤϡ
ΥץϵꤵƤʤФʤʤ
.TP
.BR MT_ST_READ_AHEAD " (ǥե: )"
Υץꤹȡ
ɥ饤ФϸĹ֥å⡼ɤɤ߹ߥХåե󥰤ɤߤ򤹤褦ˤʤ롣
Υץ󤬵Ǥꡢĥɥ饤֤Ĺ֥åλϡ
٤Ƥɤ߹ϥ֥åܿ礭ǹԤʤФʤʤ
.TP
.BR MT_ST_TWO_FM " (ǥե: )"
Υץϥե뤬줿Υɥ饤Сο񤤤ѹ롣
ĤΥեޡ񤭹Τ̾ưǤ롣
Υץ󤬿λˤϡ
ɥ饤С 2 ĤΥեޡ񤭹ǡ
2 ĤΥեޡΤȤ롣
.IP
ա
QICơץɥ饤֤ϥեޡ˾񤭤뤳ȤǤʤΤǡ
Υץ򿿤ˤƤϤʤʤ
Υɥ饤֤ϵϿǡθΤˡ
եޡ 2³Ƥ뤫ǤϤʤ
֥󥯥ơפɤΥƥȤѤ롣
ߤ¾ΤۤȤɤΥɥ饤֤⡢ϿǡΤ롣
2 ĤΥեޡɬפˤʤΤϡ
¾ΥƥȥơפȤꤹǤ롣
.TP
.BR MT_ST_DEBUGGING " (ǥե: )"
Υץ򿿤ˤȡ
ɥ饤ФϤʥǥХåѥåФ褦ˤʤ
.RB ( DEBUG
󥼥ƥɥ饤Ф򥳥ѥ뤷ƤΤͭ)
.TP
.BR MT_ST_FAST_EOM " (ǥե: )"
Υץ򿿤ˤȡ
.B MTEOM
ľܥɥ饤֤褦ˤʤ롣
᤯ʤϤ
ɥ饤ФߤΥեֹ򸫼Ȥˤʤ
(̾ʤ
.B MTIOCGET
ꥯȤˤä֤)
.B MT_ST_FAST_EOM
λˤϡɥ饤Ф
.B MTEOM
ꥯȤ˱Ȥ˥եİĿʤƤ
.TP
.BR MT_ST_AUTO_LOCK " (ǥե: )"
Υץ󤬿λˤϡ
ǥХץ󤵤ȥɥ饤֤⤬å졢
ȥå롣
.TP
.BR MT_ST_DEF_WRITES " (ǥե: )"
ơץץ (֥å⡼ɡ̤ʤ)
ɥ饤֤˥󥯤줿ǥХѹȡ
Ʊɥ饤֤˥󥯤줿¾ΥǥХǤѹ뤳Ȥ
(ΥǥХˤ)Υץϡ
ɥ饤Фˤѹ򤤤 SCSI ޥɤˤäȿǤ뤫ȡ
ɥ饤֤μưεǽĿꤷɤΤ롣
Υץ򵶤ˤƤȡ
ǥХѹȥɥ饤ФϤ SCSI ޥɤ롣
ˤƤȡ SCSI ޥɤϽ񤭹ߤ׵ᤵޤʤ
Ԥξϡɤ߹ߤκݤ˥ɥ饤֤Υե०ˤä
ơ׹¤θΤԤ롣ޤ SCSI ޥɤϡ
ơפ˱äƽ񤭹ޤƤ뤫ɤ
ǧΤѤ롣
.TP
.BR MT_ST_CAN_BSR " (ǥե: )"
ɤߤȤȡơפ򥯥Ȥˡ
ˤäƤϥơפ֤˵ᤷʤФʤʤȤ롣
ˤϡ쥳ɤۤƵᤷ SCSI ޥɤѤ롣
Ťɥ饤֤ǤϡΥޥɽο㤤Ȥ뤬
Υץꤹȡ
ɥ饤ФˤΥޥɤѤػߤ뤳ȤǤ롣
ɤߤȸĹ֥å⡼ɤѤƤȡǽŪʷ̤Ȥơ
ǥХΥ˥ơפ֤ˤʤʤȤ롣
.\"nakano 
2.6 ͥǤϡSCSI-3 򥵥ݡȤƤɥ饤֤Фơ
ͤΥǥեȤϿȤʤ롣
.TP
.BR MT_ST_NO_BLKLIMS " (ǥե: )"
ɥ饤֤ˤäƤ
.B READ BLOCK LIMITS SCSI
ޥɤĤʤȤ롣
ΥץѤȡɥ饤ФϤΥޥɤѤʤ
ϡꤷ֥åɥ饤֤˼Ƥޤȡ
ɥ饤ФΥޥåǤʤʤǤ롣
.TP
.BR MT_ST_CAN_PARTITIONS " (ǥե: )"
ΥץϡĤΥơפʣѡƥ֤Ȥ
ݡȤ뤫ɤ롣
Υץϥɥ饤֤˥󥯤줿ƤΥǥХŬѤ롣
.TP
.TP MT_ST_SCSI2LOGICAL " (ǥե: )"
Υץϡ
seek  tell  (ξԤȤ
.BR MTSEEK  MTIOCPOS
ޥɤȼơװ֤ѹȤ) κݤˡ
SCSI-2 ɸƤ֥åɥ쥹Ѥ뤫ɤ
ɥ饤Ф롣
.\"nakano both with ʬ
ȥǥХͭΥɥ쥹Ѥ롣
ɥ饤֤ɥ쥹򥵥ݡȤƤȤϡ
Υץ򥻥åȤ뤳Ȥ򶯤롣
Υ⡼ɤǤϥեޡ⥫Ȥ뤫Ǥ롣
֥åɥ쥹ݡȤʤɥ饤֤⤤Ĥ¸ߤƤ롣
.TP
.BR MT_ST_SYSV " (ǥե: )"
Υץ󤬿ˤʤäƤȡơץǥХ
SystemV Υ롼Ѥ롣 BSD Υ롼Ѥ롣
.\"nakano: semantics  롼 ϤȰ㤦
Υ롼֤κǤ礭ʰ㤤ϡɤ߹ߤԤäƤ
ǥХ줿Ȥο񤤤Ǥ롣
System V Υ롼ǤϡơפϼΥեޡۤưư
(ǥХѻˤ줬Ԥʤä)
BSD Υ롼Ǥϥơװ֤ѹʤ
.TP
.BR MT_NO_WAIT " (ǥե: )"
¨⡼ (immediate mode; ޥɤνλԤʤ)
򡢤Υޥ (rewind ʤ) Фͭˤ롣
.PP
:
.in +4n
.nf

struct mtop mt_cmd;
mt_cmd.mt_op = MTSETDRVBUFFER;
mt_cmd.mt_count = MT_ST_BOOLEANS |
        MT_ST_BUFFER_WRITES | MT_ST_ASYNC_WRITES;
ioctl(fd, MTIOCTOP, mt_cmd);
.fi
.in
.RE
.IP ""
ǥХΥǥեȤΥ֥å
.B MT_ST_DEF_BLKSIZE
ˤäǤǥեȤ̩٥ɤ
.B MT_ST_DEFDENSITY
ˤäǤ롣
Υѥ᡼ͤɤ OR Ϳ롣
.IP ""
2.1.x ʹߤΥͥǤϡॢͤϡ
֥ޥ
.B MT_ST_SET_TIMEOUT
ñ̤Υॢͤ
OR Ϳ뤳ȤˤäƹԤ롣 long ॢ
(ᤷʤɡĹ֤륳ޥɤФѤ) 
.B MT_ST_SET_LONG_TIMEOUT
Ǥ롣
ͥΥǥեȤĹɤΥɥ饤֤Ǥ
Ƥ륳ޥɤ褷ƥॢȤʤ褦ˤʤäƤ롣
äơɥ饤ФϥॢȤԤäƤʤΤˡ
ɤä (stuck ) 褦˸뤳Ȥ롣ΥޥɤȤС
Υɥ饤֤ФƤ⤦ºŪͤꤹ뤳ȤǤ롣
ĤΥǥХꤷॢͤϡ
Ʊɥ饤֤˥󥯤ƤΥǥХŬѤ롣
.IP ""
2.4.19  2.5.43 ʹߤΥͥǤϡ
Υɥ饤Фϥɥ饤֤Υ꡼˥󥰤ɬפɤ򼨤
֥ӥåȤ򥵥ݡȤ롣
ɥ饤֤꡼˥󥰾֤뤫ɤϡ
.B MT_ST_SEL_CLN
֥ޥɤˤäǤ롣
ͤ 0 ȡ꡼˥󥰥ӥåȤϾ 0 Ȥʤ롣
ͤ 1 ˤȡSCSI-3 ɸǵꤵƤ
TapeAlert ǡѤ (ޤƤʤ)
ͤȤƤ 2  17 ͽ󤵤Ƥ롣
¦ 8 ӥåȤ 18 ʾȡĥ֥ǡ (extended sense data)
Ѥ롣 9-16 ӥåȤܤ٤ӥåȤ򤹤뤿Υޥꤷ
 17-23 ӥåȤõ٤ӥåȥѥꤹ롣
Υӥåȥѥ 0 ΤȤϡ
ޥΥӥå () ꡼˥׵򼨤ѥ 0 ǤʤС
Υѥ󤬥ޥξ֥ǡХȤ˥ޥåʤФʤʤ
.SS "MTIOCGET \(em ơμ"
.PP
ΥꥯȤ
.IR "(struct mtget *)"
ȤΰȤ롣
.PP
.in +4n
.nf
/* structure for MTIOCGET \- mag tape get status command */
struct mtget {
    long     mt_type;
    long     mt_resid;
    /* the following registers are device dependent */
    long     mt_dsreg;
    long     mt_gstat;
    long     mt_erreg;
    /* The next two fields are not always used */
    daddr_t  mt_fileno;
    daddr_t  mt_blkno;
};
.fi
.in
.IP \fImt_type\fP 11
إåեˤ¿
.I mt_type
ͤƤ뤬ԤΥɥ饤ФѤΥפǤ
.B MT_ISSCSI1
( SCSI-1 ơ) 
.B MT_ISSCSI2
( SCSI-2 ơ) Τߤ֤
.IP \fImt_resid\fP
ߤΥơװֹ档
.IP \fImt_dsreg\fP
ɥ饤֤Υ֥å̩٤θߤ𤹤
( 24 ӥåȤ֥å 8 ӥåȤ̩)
Υեɤϡ
.BR MT_ST_BLKSIZE_SHIFT ,
.BR MT_ST_BLKSIZE_MASK ,
.BR MT_ST_DENSITY_SHIFT ,
.BR MT_ST_DENSITY_MASK
Ƥ롣
.IP \fImt_gstat\fP
Ѥ (ǥХ˰¸ʤ) ơ𤹤롣
ΥơӥåȤƥȤ뤿Υޥ
إåեƤ롣
.RS
.HP 4
\fBGMT_EOF\fP(\fIx\fP):
ơפϥեޡľ˰֤Ƥ롣
.RB ( MTSEEK
θǤϾ˵)
.HP
\fBGMT_BOT\fP(\fIx\fP):
ơפϺǽΥեƬ˰֤Ƥ롣
.RB ( MTSEEK
θǤϾ˵)
.HP
\fBGMT_EOT\fP(\fIx\fP):
ơϥơפʪŪʽã
.HP
\s-1GMT_SM(\s+1\fIx\fP\s-1)\s+1:
ơפϸߥåȥޡ˰֤Ƥ롣
.RB ( MTSEEK
θǤϾ˵)
.HP
\fBGMT_EOD\fP(\fIx\fP):
ơפϵϿǡ˰֤Ƥ롣
.HP
\fBGMT_WR_PROT\fP(\fIx\fP):
ɥ饤֤ϥ饤ȥץƥȤƤ롣
ϥɥ饤֤ˤäƤϡ
ɥ饤֤ߤΥǥפؤν񤭹ߤ
ݡȤƤʤ̣⤢롣
.HP
\fBGMT_ONLINE\fP(\fIx\fP):
äȤǶ
.BR open (2)
ơפäƤνǤƤɥ饤֤Τ
.HP
\fBGMT_D_6250\fP(\fIx\fP), \fBGMT_D_1600\fP(\fIx\fP), \fBGMT_D_800\fP(\fIx\fP):
ΡѡפΥơϡ
9-ȥå \(12" ơץɥ饤֤ξˤΤߡ
ߤ̩٤𤹤롣
.HP
\fBGMT_DR_OPEN\fP(\fIx\fP):
ɥ饤֤˥ơפäƤʤ
.HP
\fBGMT_IM_REP_EN\fP(\fIx\fP):
¨⡼ɡ write 뤬äȤ
ơפФʪŪʽ񤭹ߤԤ줿ɤݾڤǤʤˡ
ΥӥåȤåȤ롣ɥ饤ФǡХåե󥰤
ɥ饤֤ǡХåե󥰤ʤ˸¤äơ
ͤ 0 ˥åȤ롣
.HP
\fBGMT_CLN\fP(\fIx\fP):
ɥ饤֤꡼˥󥰤׵ᤷƤ롣
ͥ 2.4.19  2.5.43 ʹߤǼ줿
.RE
.IP \fImt_erreg\fP
.I mt_erreg
ƤեɤϰĤǡ
̤ 16 ӥåȤ顼ꥫСǤ
.RB ( MT_ST_SOFTERR_SHIFT

.B MT_ST_SOFTERR_MASK
Ƥ)
ɥ饤֤𤹤륨顼ꥫС̷⤹뤳ȤΤǡ
οϤۤȤɤξݻʤ
(ۤȤɤΥɥ饤֤ǤϡǥեȤǤϥեȥ顼𤷤ʤ
 SCSI MODE SELECT ޥɤˤäѹǤ)
.IP \fImt_fileno\fP
() ߤΥեֹ𤹤롣
եֹ椬狼ʤ (㤨
.B MTBSS

.B MTSEEK
θʤ) ˤ \-1 ˥åȤ롣
.IP \fImt_blkno\fP
ߤΥե()֥åֹ𤹤롣
֥åֹ椬狼ʤ (㤨
.BR MTBSF ,
.BR MTBSS ,
.BR MTSEEK
θʤ) ˤ \-1 ˥åȤ롣
.PD
.SS "MTIOCPOS \(em ơװ֤μ"
.PP
ΥꥯȤ
.I "(struct mtpos *)"
ΰȤꡢɥ饤֤ݻƤ븽ߤΥơץ֥åֹ𤹤롣
ϡ
.B MTIOCGET
ˤ֤
.I mt_blkno
ƱǤϤʤ
ɥ饤֤
.B "READ POSITION"
ޥ (ǥХͭɥ쥹)
򥵥ݡȤ SCSI-2ɥ饤֤
Tandberg ߴ SCSI-1 ɥ饤
(Tandberg, Archive, Viper, Wangtek, ... ) ǤʤФʤʤ
.PP
.in +4n
.nf
/* structure for MTIOCPOS \- mag tape get position command */
struct mtpos {
    long mt_blkno;    /* current block number */
};
.fi
.in
.SH ֤
.TP 14
.TP
.B EACCES
񤭹ݸƤơפ˽񤭹ߤޤϾõԤȤ
(Υ顼
.BR open (2)
ˤϸΤʤ)
.TP
.B EBUSY
ǥХǤ˻ȤƤ뤫
ɥ饤ФХåեƤʤä
.TP
.B EFAULT
ޥɤΰ
ƤӤץ°Ƥʤ֤ؤƤ롣
.TP
.B EINVAL
.BR ioctl (2)
ΰǤ뤫׵ᤷ֥å
.TP
.B EIO 14
׵ᤵ줿ǸޤǹԤʤä
.TP
.B ENOMEM
.BR read (2)
ΥХȿơפˤ뼡ʪ֥å꾮
(2.2.18  2.4.0-test6 Ǥϡۤä;ʬΥХȤ̵뤷Ƥ)
.TP
.B ENOSPC
ǥνãᡢ񤭹λʤä
.TP
.B ENOSYS

.BR ioctl (2)
.TP
.B ENXIO
ץ󤹤˥ơץǥХ¸ߤʤä
.TP
.B EOVERFLOW
ɥ饤ФХåե礭βĹ֥å
ɤ߽񤭤褦Ȥ
.TP
.B EROFS
ɥ饤֤äƤơפ饤ȥץƥȤƤˡ
.B O_WRONLY
ޤ
.B O_RDWR
 open ԤȤ
.SH ե
.TP 12
.I /dev/st*
ưᤷ SCSI ơץǥХ
.TP 12
.I /dev/nst*
ᤷ򤷤ʤ SCSI ơץǥХ
.\" .SH 
.\" Υɥ饤Ф
.\" Dwayne Forsyth ν񤤤ɥ饤ФȤˤ
.\" Kai M\(:akisara (Kai.Makisara@metla.fi) 񤤤
.\" ¾ˤⲿͤο͡Υɥ饤Ф˹׸Ƥ
.SH 
.IP 1. 4
ۤʤ륷ƥǥǡߤˤȤꤹ硢
ξΥƥʪŪʥơץ֥åפɬפ롣
ưľΥɥ饤֤Υѥ᡼ϡ¿ OS ΥǥХФ
ѤƤͤȰۤʤäƤ뤳Ȥ褯롣¿Υƥϡ
ɥ饤֤бƤвĹ֥å⡼ɤѤ롣 DAT
8mm إꥫ륹ɥ饤֡ DLT ʤɤκǶΥɥ饤֤
ۤȤɤϲĹ֥å⡼ɤбƤ뤫顣
Υɥ饤֤ (ʤȤ¾ΥƥȤΥǡ򴹤
) Linux ǤĹ֥å⡼ɤǻȤۤ
ɤ⤷ʤ (ĤޤꥷƥεưΥ⡼
.B MTSETBLK
ޤ
.B MTSETDEFBLK
Ѥ)
ȤƤϡŪ礭ʥơץ֥åѤʤС
SCSI Х­Τž®٤ʤȤǤ롣
.IP 2.
¿Υץ
.RB ( tar (1)
ʤ) Ǥϡ
ޥɥ饤󤫤桼֥åϢͤǤ롣
ͤˤäƥơ׾ʪŪʥ֥åǤΤϡ
Ĺ֥å⡼ɤ˸¤뤳Ȥա
.IP 3.
SCSI ơץɥ饤֤Ѥˤϡܤ SCSI ɥ饤С
SCSI ץΥɥ饤С SCSI ơץɥ饤ФΤ٤Ƥ
ͥȤ߹ޤƤ뤫뤤ϥ⥸塼ȤƥɤƤ
ɬפ롣 SCSI ơץɥ饤Фʤȡ
ɥ饤֤ǧ뤬
ΥڡǵҤƤơפΥݡȤѤǤʤ
.IP 4.
ɥ饤Фϥ顼å򥳥󥽡ȥȤ˽񤭽Ф
ͥ verbose SCSI messages ͭˤƤȡ
SENSE ɤưŪ˥ƥȤѴơ
ĤΥå˽񤭤롣
.IP 5.
Υɥ饤ФХåե󥰤ϡ֥å⡼ɤʤ
.BR read (2)

.BR write (2)
ΥХȿƤɤ롼ץåȤФ
ľžǤϤԲǽʤΤǡ2.6 ͥ˰ܹԤȤ˶ä⤷ʤ
ˡȤƤϡեȥˤ礭žԤ褦
(ƤϤ礭ʥ֥åȤ碌) ȤǤ롣
줬Բǽʤ顢ľž̵ˤ뤳ȤǤ롣
.\" .SH 
.\" Copyright \(co 1995 Robert K. Nichols.
.\" .br
.\" Copyright \(co 1999-2005 Kai M\(:akisara.
.\" .PP
.\" Permission is granted to make and distribute verbatim copies of this
.\" manual provided the copyright notice and this permission notice are
.\" preserved on all copies.
.\" Additional permissions are contained in the header of the source file.
.SH Ϣ
.BR mt (1)
.PP
ͥ륽
.I drivers/scsi/README.st

.I Documentation/scsi/st.txt
(ͥ 2.6 ʹ) γƥեˤϡ
ɥ饤Ф˴ؤ꿷䡢
ǽϰϤ˴ؤƤޤޤƤ롣