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authorJack Hammer <jack_hammer@adaptec.com>2006-01-31 13:17:55 -0500
committerJames Bottomley <jejb@titanic.(none)>2006-01-31 15:43:18 -0500
commita5b3c86e4bfb5689d68932105d3fdd1477c9c281 (patch)
treeb6de20e32d8bd79399ccb849b88968c16970d880 /drivers/scsi/ips.c
parent2254c86db124a37057116ad20a8de7b8483b6f44 (diff)
[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>
Diffstat (limited to 'drivers/scsi/ips.c')
-rw-r--r--drivers/scsi/ips.c26
1 files changed, 14 insertions, 12 deletions
diff --git a/drivers/scsi/ips.c b/drivers/scsi/ips.c
index 32d592befca6..86c546164da9 100644
--- a/drivers/scsi/ips.c
+++ b/drivers/scsi/ips.c
@@ -3499,6 +3499,7 @@ ips_map_status(ips_ha_t * ha, ips_scb_t * scb, ips_stat_t * sp)
3499 int device_error; 3499 int device_error;
3500 uint32_t transfer_len; 3500 uint32_t transfer_len;
3501 IPS_DCDB_TABLE_TAPE *tapeDCDB; 3501 IPS_DCDB_TABLE_TAPE *tapeDCDB;
3502 IPS_SCSI_INQ_DATA inquiryData;
3502 3503
3503 METHOD_TRACE("ips_map_status", 1); 3504 METHOD_TRACE("ips_map_status", 1);
3504 3505
@@ -3557,13 +3558,13 @@ ips_map_status(ips_ha_t * ha, ips_scb_t * scb, ips_stat_t * sp)
3557 errcode = DID_OK; 3558 errcode = DID_OK;
3558 3559
3559 /* Restrict access to physical DASD */ 3560 /* Restrict access to physical DASD */
3560 if ((scb->scsi_cmd->cmnd[0] == INQUIRY) && 3561 if (scb->scsi_cmd->cmnd[0] == INQUIRY) {
3561 ((((char *) scb->scsi_cmd-> 3562 ips_scmd_buf_read(scb->scsi_cmd,
3562 buffer)[0] & 0x1f) == TYPE_DISK)) { 3563 &inquiryData, sizeof (inquiryData));
3563 /* underflow -- no error */ 3564 if ((inquiryData.DeviceType & 0x1f) == TYPE_DISK) {
3564 /* restrict access to physical DASD */ 3565 errcode = DID_TIME_OUT;
3565 errcode = DID_TIME_OUT; 3566 break;
3566 break; 3567 }
3567 } 3568 }
3568 } else 3569 } else
3569 errcode = DID_ERROR; 3570 errcode = DID_ERROR;
@@ -4135,6 +4136,7 @@ ips_chkstatus(ips_ha_t * ha, IPS_STATUS * pstatus)
4135 uint8_t basic_status; 4136 uint8_t basic_status;
4136 uint8_t ext_status; 4137 uint8_t ext_status;
4137 int errcode; 4138 int errcode;
4139 IPS_SCSI_INQ_DATA inquiryData;
4138 4140
4139 METHOD_TRACE("ips_chkstatus", 1); 4141 METHOD_TRACE("ips_chkstatus", 1);
4140 4142
@@ -4255,11 +4257,11 @@ ips_chkstatus(ips_ha_t * ha, IPS_STATUS * pstatus)
4255 scb->scsi_cmd->result = errcode << 16; 4257 scb->scsi_cmd->result = errcode << 16;
4256 } else { /* bus == 0 */ 4258 } else { /* bus == 0 */
4257 /* restrict access to physical drives */ 4259 /* restrict access to physical drives */
4258 if ((scb->scsi_cmd->cmnd[0] == INQUIRY) && 4260 if (scb->scsi_cmd->cmnd[0] == INQUIRY) {
4259 ((((char *) scb->scsi_cmd->buffer)[0] & 0x1f) == 4261 ips_scmd_buf_read(scb->scsi_cmd,
4260 TYPE_DISK)) { 4262 &inquiryData, sizeof (inquiryData));
4261 4263 if ((inquiryData.DeviceType & 0x1f) == TYPE_DISK)
4262 scb->scsi_cmd->result = DID_TIME_OUT << 16; 4264 scb->scsi_cmd->result = DID_TIME_OUT << 16;
4263 } 4265 }
4264 } /* else */ 4266 } /* else */
4265 } else { /* recovered error / success */ 4267 } else { /* recovered error / success */