From 1e69b23b895102cd3f37de07e5ff10e29c003da1 Mon Sep 17 00:00:00 2001
From: Michael Shalayeff <mickey@cvs.openbsd.org>
Date: Mon, 28 Aug 2006 02:50:15 +0000
Subject: properly detect failed drives and do not crash bioctl; krw@ testing

---
 sys/dev/ic/ciss.c    | 53 ++++++++++++++++++++++++++++++++++------------------
 sys/dev/ic/cissreg.h |  6 ++++--
 2 files changed, 39 insertions(+), 20 deletions(-)

(limited to 'sys/dev')

diff --git a/sys/dev/ic/ciss.c b/sys/dev/ic/ciss.c
index f3ee1bb4d6f..a0f65a95665 100644
--- a/sys/dev/ic/ciss.c
+++ b/sys/dev/ic/ciss.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: ciss.c,v 1.17 2006/08/28 01:32:06 mickey Exp $	*/
+/*	$OpenBSD: ciss.c,v 1.18 2006/08/28 02:50:14 mickey Exp $	*/
 
 /*
  * Copyright (c) 2005,2006 Michael Shalayeff
@@ -1077,7 +1077,6 @@ ciss_ioctl(struct device *dev, u_long cmd, caddr_t addr)
 
 	case BIOCDISK:
 		bd = (struct bioc_disk *)addr;
-		pdid = sc->scratch;
 		if (bd->bd_volid > sc->maxunits) {
 			error = EINVAL;
 			break;
@@ -1087,27 +1086,45 @@ ciss_ioctl(struct device *dev, u_long cmd, caddr_t addr)
 			error = EINVAL;
 			break;
 		}
-		if ((error = ciss_pdid(sc, ldp->tgts[pd], pdid, SCSI_POLL)))
-			break;
-		if (pdid->config & CISS_PD_SPARE)
-			bd->bd_status = BIOC_SDHOTSPARE;
-		else if (pdid->present & CISS_PD_PRESENT)
-			bd->bd_status = BIOC_SDONLINE;
-		else
-			bd->bd_status = BIOC_SDINVALID;
-		bd->bd_size = (u_int64_t)letoh32(pdid->nblocks) *
-		    letoh16(pdid->blksz);
-		bd->bd_channel = pdid->bus;  
-		bd->bd_target = pdid->target;
-		bd->bd_lun = 0;
-		strlcpy(bd->bd_vendor, pdid->model, sizeof(bd->bd_vendor));
-		strlcpy(bd->bd_serial, pdid->serial, sizeof(bd->bd_serial));
-		bd->bd_procdev[0] = '\0';
 		ldstat = sc->scratch;
 		if ((error = ciss_ldstat(sc, bd->bd_volid, ldstat)))
 			break;
+		bd->bd_status = -1;
 		if (ldstat->bigrebuild == ldp->tgts[pd])
 			bd->bd_status = BIOC_SDREBUILD;
+		if (ciss_bitset(ldp->tgts[pd] & 0x7f, ldstat->bigfailed)) {
+			bd->bd_status = BIOC_SDFAILED;
+			bd->bd_size = 0;
+			bd->bd_channel = (ldp->tgts[pd] & 0x7f) / sc->ndrives;
+			bd->bd_target = ldp->tgts[pd] % sc->ndrives;
+			bd->bd_lun = 0;
+			bd->bd_vendor[0] = '\0';
+			bd->bd_serial[0] = '\0';
+			bd->bd_procdev[0] = '\0';
+		} else {
+			pdid = sc->scratch;
+			if ((error = ciss_pdid(sc, ldp->tgts[pd], pdid,
+			    SCSI_POLL)))
+				break;
+			if (bd->bd_status < 0) {
+				if (pdid->config & CISS_PD_SPARE)
+					bd->bd_status = BIOC_SDHOTSPARE;
+				else if (pdid->present & CISS_PD_PRESENT)
+					bd->bd_status = BIOC_SDONLINE;
+				else
+					bd->bd_status = BIOC_SDINVALID;
+			}
+			bd->bd_size = (u_int64_t)letoh32(pdid->nblocks) *
+			    letoh16(pdid->blksz);
+			bd->bd_channel = pdid->bus;  
+			bd->bd_target = pdid->target;
+			bd->bd_lun = 0;
+			strlcpy(bd->bd_vendor, pdid->model,
+			    sizeof(bd->bd_vendor));
+			strlcpy(bd->bd_serial, pdid->serial,
+			    sizeof(bd->bd_serial));
+			bd->bd_procdev[0] = '\0';
+		}
 		break;
 
 	case BIOCBLINK:
diff --git a/sys/dev/ic/cissreg.h b/sys/dev/ic/cissreg.h
index 55b7cefa3c4..5fb7afd018f 100644
--- a/sys/dev/ic/cissreg.h
+++ b/sys/dev/ic/cissreg.h
@@ -1,4 +1,4 @@
-/*	$OpenBSD: cissreg.h,v 1.5 2006/08/27 20:51:09 mickey Exp $	*/
+/*	$OpenBSD: cissreg.h,v 1.6 2006/08/28 02:50:14 mickey Exp $	*/
 
 /*
  * Copyright (c) 2005,2006 Michael Shalayeff
@@ -46,6 +46,8 @@
 #define	CISS_CMD_LDMAP	0xc2
 #define	CISS_CMD_PDMAP	0xc3
 
+#define	ciss_bitset(d, v)	((v)[(d) >> 3] & (1 << ((d) & 7)))
+
 struct ciss_softc;
 
 struct ciss_config {
@@ -189,7 +191,7 @@ struct ciss_ldstat {
 	u_int8_t	rebldfail;	/* rebuild failure */
 #define	CISS_LD_RBLD_READ	0x01	/* read faild */
 #define	CISS_LD_RBLD_WRITE	0x02	/* write fail */
-	u_int8_t	bigfail[16];	/* bigmap vers of some of the above */
+	u_int8_t	bigfailed[16];	/* bigmap vers of same of the above */
 	u_int8_t	bigremapcnt[256];
 	u_int8_t	bigreplaced[16];
 	u_int8_t	bigspare[16];
-- 
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