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#include <sys/mtio.h>

int ioctl(int fd, int request [, (void *)arg3])
int ioctl(int fd, MTIOCTOP, (struct mtop *)mt_cmd)
int ioctl(int fd, MTIOCGET, (struct mtget *)mt_status)
int ioctl(int fd, MTIOCPOS, (struct mtpos *)mt_pos)

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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

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IOCTL

MTIOCTOP - ¥Æ¡¼¥×Áàºî¤Î¼Â¹Ô

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/* Structure for MTIOCTOP - mag tape op command: */
struct mtop {
    short  mt_op;    /* operations defined below */
    int    mt_count; /* how many of them */
};

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MTCOMPRESSION

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MTLOAD

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MTLOCK

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MTOFFL

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MTRESET

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MTRETEN

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¤³¤Î¥ª¥×¥·¥ç¥ó¤Ï¡¢ seek ¤ª¤è¤Ó tell Áàºî (ξ¼Ô¤È¤â MTSEEK¡¦MTIOCPOS ¥³¥Þ¥ó¥É¤òȼ¤¤¡¢ ¥Æ¡¼¥×°ÌÃÖ¤òÊѹ¹¤¹¤ë¤È¤­) ¤ÎºÝ¤Ë¡¢ SCSI-2 ¤Îɸ½à¤ÇÄêµÁ¤µ¤ì¤Æ¤¤¤ëÏÀÍý¥Ö¥í¥Ã¥¯¥¢¥É¥ì¥¹¤òÍѤ¤¤ë¤«¤É¤¦¤«¤ò ¥É¥é¥¤¥Ð¤ËÅÁ¤¨¤ë¡£ µ¶¤À¤È¥Ç¥Ð¥¤¥¹¸ÇÍ­¤Î¥¢¥É¥ì¥¹¤¬ÍѤ¤¤é¤ì¤ë¡£ ¥É¥é¥¤¥Ö¤¬ÏÀÍý¥¢¥É¥ì¥¹¤ò¥µ¥Ý¡¼¥È¤·¤Æ¤¤¤ë¤È¤­¤Ï¡¢ ¤³¤Î¥ª¥×¥·¥ç¥ó¤ò¥»¥Ã¥È¤¹¤ë¤³¤È¤ò¶¯¤¯´«¤á¤ë¡£ ¤³¤Î¥â¡¼¥É¤Ç¤Ï¥Õ¥¡¥¤¥ë¥Þ¡¼¥¯¤â¥«¥¦¥ó¥È¤¹¤ë¤«¤é¤Ç¤¢¤ë¡£ ÏÀÍý¥Ö¥í¥Ã¥¯¥¢¥É¥ì¥¹¤·¤«¥µ¥Ý¡¼¥È¤·¤Ê¤¤¥É¥é¥¤¥Ö¤â¤¤¤¯¤Ä¤«Â¸ºß¤·¤Æ¤¤¤ë¡£

MT_ST_SYSV (¥Ç¥Õ¥©¥ë¥È: µ¶)

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Îã

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);

¥Ç¥Ð¥¤¥¹¤Î¥Ç¥Õ¥©¥ë¥È¤Î¥Ö¥í¥Ã¥¯¥µ¥¤¥º¤Ï MT_ST_DEF_BLKSIZE
¤Ë¤è¤Ã¤ÆÀßÄê¤Ç¤­¡¢¥Ç¥Õ¥©¥ë¥È¤ÎÌ©ÅÙ¥³¡¼¥É¤Ï MT_ST_DEFDENSITY ¤Ë¤è¤Ã¤ÆÀßÄê¤Ç¤­¤ë¡£ ¤³¤ì¤é¤Î¥Ñ¥é¥á¡¼¥¿¤ÎÃͤÏÁàºî¥³¡¼¥É¤È OR ¤·¤ÆÍ¿¤¨¤ë¡£

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MTIOCGET - ¥¹¥Æ¡¼¥¿¥¹¤Î¼èÆÀ

¤³¤Î¥ê¥¯¥¨¥¹¥È¤Ï (struct mtget *). ¤È¤¤¤¦·¿¤Î°ú¿ô¤ò¤È¤ë¡£

/* 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;
};

mt_type

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mt_resid

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mt_dsreg

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mt_gstat

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GMT_EOF(x): ¥Æ¡¼¥×¤Ï¥Õ¥¡¥¤¥ë¥Þ¡¼¥¯¤Îľ¸å¤Ë°ÌÃÖ¤·¤Æ¤¤¤ë¡£ (MTSEEK Áàºî¤Î¸å¤Ç¤Ï¾ï¤Ëµ¶)

GMT_BOT(x): ¥Æ¡¼¥×¤ÏºÇ½é¤Î¥Õ¥¡¥¤¥ë¤ÎÀèƬ¤Ë°ÌÃÖ¤·¤Æ¤¤¤ë¡£ (MTSEEK Áàºî¤Î¸å¤Ç¤Ï¾ï¤Ëµ¶)

GMT_EOT(x): ¥Æ¡¼¥×Áàºî¤Ï¥Æ¡¼¥×¤ÎʪÍýŪ¤Ê½ªÅÀ¤Ë㤷¤¿¡£

GMT_SM(x): ¥Æ¡¼¥×¤Ï¸½ºß¥»¥Ã¥È¥Þ¡¼¥¯¤Ë°ÌÃÖ¤·¤Æ¤¤¤ë¡£ (MTSEEK Áàºî¤Î¸å¤Ç¤Ï¾ï¤Ëµ¶)

GMT_EOD(x): ¥Æ¡¼¥×¤Ïµ­Ï¿¥Ç¡¼¥¿¤ÎËöÈø¤Ë°ÌÃÖ¤·¤Æ¤¤¤ë¡£

GMT_WR_PROT(x): ¥É¥é¥¤¥Ö¤Ï¥é¥¤¥È¥×¥í¥Æ¥¯¥È¤µ¤ì¤Æ¤¤¤ë¡£ ¤³¤ì¤Ï¥É¥é¥¤¥Ö¤Ë¤è¤Ã¤Æ¤Ï¡¢ ¥É¥é¥¤¥Ö¤¬¸½ºß¤Î¥á¥Ç¥£¥¢¥¿¥¤¥×¤Ø¤Î½ñ¤­¹þ¤ß¤ò ¥µ¥Ý¡¼¥È¤·¤Æ¤¤¤Ê¤¤»ö¤ò°ÕÌ£¤¹¤ë¾ì¹ç¤â¤¢¤ë¡£

GMT_ONLINE(x): ¤â¤Ã¤È¤âºÇ¶á¤Î open() ¤¬¡¢¥Æ¡¼¥×¤¬Æþ¤Ã¤Æ¤¤¤ÆÁàºî¤Î½àÈ÷¤¬¤Ç¤­¤Æ¤¤¤ë¥É¥é¥¤¥Ö¤ò¸¡ÃΤ·¤¿¡£

GMT_D_6250(x), GMT_D_1600(x), GMT_D_800(x): ¤³¤Î¡ÖÈÆÍѡפΥ¹¥Æ¡¼¥¿¥¹¾ðÊó¤Ï¡¢

9-¥È¥é¥Ã¥¯ ½" ¥Æ¡¼¥×¥É¥é¥¤¥Ö¤Î¾ì¹ç¤Ë¤Î¤ß¡¢ ¸½ºß¤ÎÌ©ÅÙ¤ÎÀßÄê¤òÊó¹ð¤¹¤ë¡£

GMT_DR_OPEN(x): ¥É¥é¥¤¥Ö¤Ë¥Æ¡¼¥×¤¬Æþ¤Ã¤Æ¤¤¤Ê¤¤¡£

GMT_IM_REP_EN(x): ¨¹ïÊó¹ð¤¹¤ë¥â¡¼¥É¡£ write ¥³¡¼¥ë¤¬Ìá¤Ã¤¿¤È¤­¡¢ ¥Æ¡¼¥×¤ËÂФ·¤ÆʪÍýŪ¤Ê½ñ¤­¹þ¤ß¤¬¹Ô¤ï¤ì¤¿¤«¤É¤¦¤«¤òÊݾڤǤ­¤Ê¤¤¾ì¹ç¤Ë¡¢ ¤³¤Î¥Ó¥Ã¥È¤¬¥»¥Ã¥È¤µ¤ì¤ë¡£¥É¥é¥¤¥Ð¤¬¥Ç¡¼¥¿¤ò¥Ð¥Ã¥Õ¥¡¥ê¥ó¥°¤»¤º¡¢ ¥É¥é¥¤¥Ö¤â¥Ç¡¼¥¿¤ò¥Ð¥Ã¥Õ¥¡¥ê¥ó¥°¤·¤Ê¤¤¾ì¹ç¤Ë¸Â¤Ã¤Æ¡¢ ¤³¤ÎÃÍ¤Ï 0 ¤Ë¥»¥Ã¥È¤µ¤ì¤ë¡£

mt_erreg

mt_erreg ¤ÇÄêµÁ¤µ¤ì¤Æ¤¤¤ë¥Õ¥£¡¼¥ë¥É¤Ï°ì¤Ä¤À¤±¤Ç¡¢ ²¼°Ì¤Î 16 ¥Ó¥Ã¥È¤¬¥¨¥é¡¼¤ò¥ê¥«¥Ð¡¼¤·¤¿²ó¿ô¤Ç¤¢¤ë (MT_ST_SOFTERR_SHIFT ¤È MT_ST_SOFTERR_MASK ¤ÇÄêµÁ¤µ¤ì¤Æ¤¤¤ë)¡£ ¥É¥é¥¤¥Ö¤ÎÊó¹ð¤¹¤ë¥¨¥é¡¼¥ê¥«¥Ð¡¼¿ô¤ÈÌ·½â¤¹¤ë¤³¤È¤¬¤¢¤ë¤Î¤Ç¡¢ ¤³¤Î¿ô¤Ï¤Û¤È¤ó¤É¤Î¾ì¹ç°Ý»ý¤µ¤ì¤Ê¤¤ (¤Û¤È¤ó¤É¤Î¥É¥é¥¤¥Ö¤Ç¤Ï¡¢¥Ç¥Õ¥©¥ë¥È¤Ç¤Ï¥½¥Õ¥È¥¨¥é¡¼¤òÊó¹ð¤·¤Ê¤¤¡£ ¤·¤«¤·¤³¤ì¤Ï SCSI MODE SELECT ¥³¥Þ¥ó¥É¤Ë¤è¤Ã¤ÆÊѹ¹¤Ç¤­¤ë)¡£

mt_fileno

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mt_blkno

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MTIOCPOS - ¥Æ¡¼¥×°ÌÃ֤μèÆÀ

¤³¤Î¥ê¥¯¥¨¥¹¥È¤Ï (struct mtpos *) ·¿¤Î°ú¿ô¤ò¤È¤ê¡¢¥É¥é¥¤¥Ö¤¬ÊÝ»ý¤·¤Æ¤¤¤ë¸½ºß¤Î¥Æ¡¼¥×¥Ö¥í¥Ã¥¯ÈÖ¹æ¤òÊó¹ð¤¹¤ë¡£ ¤³¤ì¤Ï¡¢MTIOCGET ¤Ë¤è¤êÊÖ¤µ¤ì¤ë mt_blkno ¤ÈƱ¤¸¤Ç¤Ï¤Ê¤¤¡£ ¥É¥é¥¤¥Ö¤Ï READ POSITION ¥³¥Þ¥ó¥É (¥Ç¥Ð¥¤¥¹¸ÇÍ­¥¢¥É¥ì¥¹) ¤ò¥µ¥Ý¡¼¥È¤¹¤ë SCSI-2¥É¥é¥¤¥Ö¤«¡¢

/* structure for MTIOCPOS - mag tape get position command */
struct     mtpos {
    long   mt_blkno; /* current block number */
};