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authorJack Hammer <jack_hammer@adaptec.com>2006-01-31 21:17:55 +0300
committerJames Bottomley <jejb@titanic.(none)>2006-01-31 23:43:18 +0300
commita5b3c86e4bfb5689d68932105d3fdd1477c9c281 (patch)
treeb6de20e32d8bd79399ccb849b88968c16970d880 /drivers/scsi/ips.c
parent2254c86db124a37057116ad20a8de7b8483b6f44 (diff)
downloadlinux-a5b3c86e4bfb5689d68932105d3fdd1477c9c281.tar.xz
[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)
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 */