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Ensure that media protection is released before attempting to eject the

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media in all cases.

Remove SCSI_2_MAX_DENSITY_CODE definition and rely on the device to tell
us if we attempt an invalid setting.

Closes PR 1245.

Submitted by:	fredriks@mcs.com a few changes by me.
This commit is contained in:
Justin T. Gibbs 1996-06-24 04:54:32 +00:00
parent a001376dc3
commit 6a2631bf25
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=16665
2 changed files with 25 additions and 13 deletions
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6
sys/scsi/scsiconf.h
View File

@ -14,7 +14,7 @@
*
* Ported to run under 386BSD by Julian Elischer (julian@tfs.com) Sept 1992
*
* $Id: scsiconf.h,v 1.42 1996/06/14 11:02:18 asami Exp $
* $Id: scsiconf.h,v 1.43 1996/06/23 15:02:02 bde Exp $
*/
#ifndef SCSI_SCSICONF_H
#define SCSI_SCSICONF_H 1
@ -239,8 +239,8 @@ extern struct scsi_device_config scsi_dinit[];
struct st_mode {
/* 4*/ u_int32_t blksiz;
/* 6*/ u_int16_t quirks; /* same definitions as in XXX */
/* 7*/ char density;
/* 8*/ char spare[1];
/* 7*/ u_int8_t density;
/* 8*/ u_int8_t spare[1];
};
typedef struct st_mode st_modes[4];

32
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 1.68 1996/04/02 04:54:26 scrappy Exp $
* $Id: st.c,v 1.69 1996/06/22 14:57:55 joerg Exp $
*/
/*
@ -68,9 +68,6 @@
#define IS_CTLMODE(DEV) (MODE(DEV) == CTLMODE)
#define SCSI_2_MAX_DENSITY_CODE 0x17 /* maximum density code specified
* in SCSI II spec. */
static errval st_space __P((u_int32_t unit, int32_t number, u_int32_t what, u_int32_t flags));
static errval st_rewind __P((u_int32_t unit, boolean immed, u_int32_t flags));
static errval st_erase __P((u_int32_t unit, boolean immed, u_int32_t flags));
@ -496,6 +493,13 @@ st_close(dev_t dev, int flag, int fmt, struct proc *p,
if ((st->flags & (ST_WRITTEN | ST_FM_WRITTEN)) == ST_WRITTEN)
st_write_filemarks(unit, 1, 0);
/*
* Since the device has seen its last close, allow media removal.
* Do this before we attempt an eject.
*/
scsi_prevent(sc_link, PR_ALLOW, SCSI_SILENT);
switch (mode & 0x3) {
case 0:
case 3: /* for now */
@ -510,7 +514,6 @@ st_close(dev_t dev, int flag, int fmt, struct proc *p,
st_unmount(unit, EJECT);
break;
}
scsi_prevent(sc_link, PR_ALLOW, SCSI_SILENT);
sc_link->flags &= ~SDEV_OPEN;
st->flags &= ~ST_OPEN;
@ -1111,6 +1114,11 @@ struct proc *p, struct scsi_link *sc_link)
flags);
break;
case MTOFFL: /* rewind and put the drive offline */
/*
* Be sure to allow media removal before
* attempting the eject.
*/
scsi_prevent(sc_link, PR_ALLOW, SCSI_SILENT);
st_unmount(unit, EJECT);
break;
case MTNOP: /* no operation, sets status only */
@ -1141,13 +1149,14 @@ struct proc *p, struct scsi_link *sc_link)
goto try_new_value;
case MTSETDNSTY: /* Set density for device and mode */
if (number > SCSI_2_MAX_DENSITY_CODE) {
if (number > (u_int8_t)0xff) {
/* Guard against overflows */
errcode = EINVAL;
} else {
st->density = number;
goto try_new_value;
}
goto try_new_value;
break;
case MTCOMP: /* enable default compression */
errcode = st_comp(unit,number);
break;
@ -1814,7 +1823,11 @@ st_interpret_sense(xs)
info = xs->datalen;
}
}
if ((sense->error_code & SSD_ERRCODE) != 0x70) {
key = sense->ext.extended.flags & SSD_KEY;
if (((sense->error_code & SSD_ERRCODE) != 0x70)
|| (key == 0x7)) /* Media Write Protected */ {
return SCSIRET_CONTINUE;/* let the generic code handle it */
}
if(sense->ext.extended.flags & (SSD_EOM|SSD_FILEMARK|SSD_ILI)) {
@ -1890,7 +1903,6 @@ st_interpret_sense(xs)
}
return 0;
}
key = sense->ext.extended.flags & SSD_KEY;
if (key == 0x8) {
xs->flags |= SCSI_EOF; /* some drives need this */