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Finally implement the kernel hook for the "mt eom" command. (The

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user-level part has already been commited.)

Note that i've lost the "official" code for this; it went into the
system after 1.1.5.1.  The commited code is my own version, but it has
proven to work for me for more than a year now.
This commit is contained in:
Joerg Wunsch 1995-04-29 21:30:29 +00:00
parent e40a316fcf
commit 3586bcab62
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=8175
2 changed files with 25 additions and 9 deletions
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6
sys/scsi/scsi_tape.h
View File

@ -21,7 +21,7 @@
/*
* Ported to run under 386BSD by Julian Elischer (julian@tfs.com) Sept 1992
*
* $Id: scsi_tape.h,v 1.10 1994/10/28 13:19:34 jkh Exp $
* $Id: scsi_tape.h,v 1.11 1995/03/21 11:21:03 dufault Exp $
*/
#ifndef SCSI_SCSI_TAPE_H
#define SCSI_SCSI_TAPE_H 1
@ -121,8 +121,8 @@ struct scsi_blk_limits
#define WRITE_COMMAND_TAPE 0x0a
#define WRITE_FILEMARKS 0x10
#define SPACE 0x11
#define ERASE 0x19 /* AKL */
#define LOAD_UNLOAD 0x1b /* same as above */
#define ERASE 0x19
#define LOAD_UNLOAD 0x1b

28
sys/scsi/st.c
View File

@ -12,7 +12,7 @@
* on the understanding that TFS is not responsible for the correct
* functioning of this software in any circumstances.
*
* $Id: st.c,v 1.32 1995/04/14 15:10:44 dufault Exp $
* $Id: st.c,v 1.33 1995/04/23 22:07:54 gibbs Exp $
*/
/*
@ -152,7 +152,7 @@ static struct rogues gallery[] = /* ends with an all-null entry */
errval st_space __P((u_int32 unit, int32 number, u_int32 what, u_int32 flags));
errval st_rewind __P((u_int32 unit, boolean immed, u_int32 flags));
errval st_erase __P((u_int32 unit, boolean immed, u_int32 flags)); /* AKL */
errval st_erase __P((u_int32 unit, boolean immed, u_int32 flags));
static errval st_mode_sense __P((u_int32 unit, u_int32 flags, \
struct tape_pages *page, u_int32 pagelen, u_int32 pagecode));
errval st_decide_mode __P((u_int32 unit, boolean first_read));
@ -1190,10 +1190,16 @@ struct proc *p, struct scsi_link *sc_link)
if (errcode == ESUCCESS)
errcode = st_space(unit, number, SP_BLKS, flags);
break;
case MTEOD: /* space to end of recorded medium */
errcode = st_chkeod(unit, FALSE, &nmarks, flags);
if (errcode == ESUCCESS)
errcode = st_space(unit, 0, SP_EOM,
flags);
break;
case MTREW: /* rewind */
errcode = st_rewind(unit, FALSE, flags);
break;
case MTERASE: /* erase - AKL */
case MTERASE: /* erase */
errcode = st_erase(unit, FALSE, flags);
break;
case MTOFFL: /* rewind and put the drive offline */
@ -1648,6 +1654,16 @@ st_space(unit, number, what, flags)
st->flags &= ~ST_BLANK_READ;
number++; /* dubious */
}
break;
case SP_EOM:
if (st->flags & ST_EIO_PENDING)
{
/* we are already at EOM */
st->flags &= ~ST_EIO_PENDING;
return(ESUCCESS);
}
number = 1; /* we have only one end-of-medium */
break;
}
if (number == 0) {
return (ESUCCESS);
@ -1818,7 +1834,7 @@ st_rewind(unit, immed, flags)
}
/*
** Erase the device - AKL: Andreas Klemm <andreas@knobel.gun.de>
** Erase the device
*/
errval
st_erase(unit, immed, flags)
@ -1835,7 +1851,7 @@ st_erase(unit, immed, flags)
if (error != ESUCCESS)
return (error);
/*
** AKL: Archive Viper 2525 technical manual 5.7 (ERASE 19h):
** Archive Viper 2525 technical manual 5.7 (ERASE 19h):
** tape has to be positioned to BOT first before erase command
** is issued or command is rejected. So we rewind the tape first
** and exit with an error, if the tape can't be rewinded.
@ -1846,7 +1862,7 @@ st_erase(unit, immed, flags)
st->flags &= ~ST_PER_ACTION;
bzero(&scsi_cmd, sizeof(scsi_cmd));
scsi_cmd.op_code = ERASE;
scsi_cmd.byte2 = SE_LONG; /* LONG_ERASE - AKL */
scsi_cmd.byte2 = SE_LONG; /* LONG_ERASE */
scsi_cmd.byte2 += immed ? SE_IMMED : 0; /* immed bit is here the 2nd! */
return (scsi_scsi_cmd(sc_link,
(struct scsi_generic *) &scsi_cmd,