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[SCSI] ServeRAID: prevent seeing DADSI devices 

A critical thing the ServeRAID driver MUST do is hide the physical DASDI
devices from the OS. It does this by intercepting the INQUIRY commands.

In recent 2.6.15 testing, I discovered this to be failing.

The cause was the driver assuming that the INQUIRY response data was in a
simple single buffer, when it was actually a 1 element scatter gather list.

This patch makes ips always look at the correct data when examining an
INQUIRY response.

Signed-off-by: Jack Hammer <jack_hammer@adaptec.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
This commit is contained in:
Jack Hammer 2006-01-31 13:17:55 -05:00 committed by James Bottomley
parent 2254c86db1
commit a5b3c86e4b
1 changed files with 14 additions and 12 deletions
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26
drivers/scsi/ips.c
View File

@ -3499,6 +3499,7 @@ ips_map_status(ips_ha_t * ha, ips_scb_t * scb, ips_stat_t * sp)
int device_error;
uint32_t transfer_len;
IPS_DCDB_TABLE_TAPE *tapeDCDB;
IPS_SCSI_INQ_DATA inquiryData;
METHOD_TRACE("ips_map_status", 1);
@ -3557,13 +3558,13 @@ ips_map_status(ips_ha_t * ha, ips_scb_t * scb, ips_stat_t * sp)
errcode = DID_OK;
/* Restrict access to physical DASD */
if ((scb->scsi_cmd->cmnd[0] == INQUIRY) &&
((((char *) scb->scsi_cmd->
buffer)[0] & 0x1f) == TYPE_DISK)) {
/* underflow -- no error */
/* restrict access to physical DASD */
errcode = DID_TIME_OUT;
break;
if (scb->scsi_cmd->cmnd[0] == INQUIRY) {
ips_scmd_buf_read(scb->scsi_cmd,
&inquiryData, sizeof (inquiryData));
if ((inquiryData.DeviceType & 0x1f) == TYPE_DISK) {
errcode = DID_TIME_OUT;
break;
}
}
} else
errcode = DID_ERROR;
@ -4135,6 +4136,7 @@ ips_chkstatus(ips_ha_t * ha, IPS_STATUS * pstatus)
uint8_t basic_status;
uint8_t ext_status;
int errcode;
IPS_SCSI_INQ_DATA inquiryData;
METHOD_TRACE("ips_chkstatus", 1);
@ -4255,11 +4257,11 @@ ips_chkstatus(ips_ha_t * ha, IPS_STATUS * pstatus)
scb->scsi_cmd->result = errcode << 16;
} else { /* bus == 0 */
/* restrict access to physical drives */
if ((scb->scsi_cmd->cmnd[0] == INQUIRY) &&
((((char *) scb->scsi_cmd->buffer)[0] & 0x1f) ==
TYPE_DISK)) {
scb->scsi_cmd->result = DID_TIME_OUT << 16;
if (scb->scsi_cmd->cmnd[0] == INQUIRY) {
ips_scmd_buf_read(scb->scsi_cmd,
&inquiryData, sizeof (inquiryData));
if ((inquiryData.DeviceType & 0x1f) == TYPE_DISK)
scb->scsi_cmd->result = DID_TIME_OUT << 16;
}
} /* else */
} else { /* recovered error / success */