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| author | Jack Hammer <jack_hammer@adaptec.com> | 2006-01-31 13:17:55 -0500 |
|---|---|---|
| committer | James Bottomley <jejb@titanic.(none)> | 2006-01-31 14:43:18 -0600 |
| commit | a5b3c86e4bfb5689d68932105d3fdd1477c9c281 (patch) | |
| tree | b6de20e32d8bd79399ccb849b88968c16970d880 /drivers/scsi/ips.c | |
| parent | 2254c86db124a37057116ad20a8de7b8483b6f44 (diff) | |
| download | op-kernel-dev-a5b3c86e4bfb5689d68932105d3fdd1477c9c281.zip op-kernel-dev-a5b3c86e4bfb5689d68932105d3fdd1477c9c281.tar.gz | |
[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.c | 26 |
1 files changed, 14 insertions, 12 deletions
diff --git a/drivers/scsi/ips.c b/drivers/scsi/ips.c index 32d592b..86c5461 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) 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 */ |
