Add VINUM_SETSTATE_FORCE ioctl for diddling individual object states.

This is a repair tool which can also be used for panicing the system.
Use with utmost care if at all.

2 files changed, 15 insertions, 7 deletions

diff --git a/sys/dev/vinum/vinumio.h b/sys/dev/vinum/vinumio.h
index c3bd528..a7c43d3 100644
--- a/sys/dev/vinum/vinumio.h
+++ b/sys/dev/vinum/vinumio.h
@@ -126,7 +126,7 @@ struct vinum_ioctl_msg {
 #define VINUM_INITSD 		_IOW(L, 82, int)	    /* initialize a subdisk */
 #define VINUM_REMOVE 		_IOWR(L, 83, struct vinum_ioctl_msg) /* remove an object */
 #define VINUM_READPOL 		_IOWR(L, 84, struct vinum_ioctl_msg) /* set read policy */
-/* 85 going begging */
+#define VINUM_SETSTATE_FORCE	_IOC(IOC_IN | IOC_OUT, L, 85, MAX_IOCTL_REPLY) /* diddle object state */
 #define VINUM_RESETSTATS	_IOWR(L, 86, struct vinum_ioctl_msg) /* reset object stats */
 #define VINUM_ATTACH		_IOWR(L, 87, struct vinum_ioctl_msg) /* attach an object */
 #define VINUM_DETACH		_IOWR(L, 88, struct vinum_ioctl_msg) /* remove an object */
diff --git a/sys/dev/vinum/vinumioctl.c b/sys/dev/vinum/vinumioctl.c
index 4200602..5eaa697 100644
--- a/sys/dev/vinum/vinumioctl.c
+++ b/sys/dev/vinum/vinumioctl.c
@@ -60,7 +60,7 @@ void replaceobject(struct vinum_ioctl_msg *);
 jmp_buf command_fail;					    /* return on a failed command */
 
 /* ioctl routine */
-int 
+int
 vinumioctl(dev_t dev,
     u_long cmd,
     caddr_t data,
@@ -220,6 +220,14 @@ vinumioctl(dev_t dev,
 	    setstate((struct vinum_ioctl_msg *) data);	    /* set an object state */
 	    return 0;
 
+	    /*
+	     * Set state by force, without changing
+	     * anything else.
+	     */
+	case VINUM_SETSTATE_FORCE:
+	    setstate_by_force((struct vinum_ioctl_msg *) data);	/* set an object state */
+	    return 0;
+
 #ifdef VINUMDEBUG
 	case VINUM_MEMINFO:
 	    vinum_meminfo(data);
@@ -463,7 +471,7 @@ validvol(int volno, struct _ioctl_reply *reply)
 }
 
 /* reset an object's stats */
-void 
+void
 resetstats(struct vinum_ioctl_msg *msg)
 {
     struct _ioctl_reply *reply = (struct _ioctl_reply *) msg;
@@ -542,7 +550,7 @@ resetstats(struct vinum_ioctl_msg *msg)
 }
 
 /* attach an object to a superior object */
-void 
+void
 attachobject(struct vinum_ioctl_msg *msg)
 {
     struct _ioctl_reply *reply = (struct _ioctl_reply *) msg;
@@ -623,7 +631,7 @@ attachobject(struct vinum_ioctl_msg *msg)
 }
 
 /* detach an object from a superior object */
-void 
+void
 detachobject(struct vinum_ioctl_msg *msg)
 {
     struct _ioctl_reply *reply = (struct _ioctl_reply *) msg;
@@ -751,7 +759,7 @@ detachobject(struct vinum_ioctl_msg *msg)
     }
 }
 
-void 
+void
 renameobject(struct vinum_rename_msg *msg)
 {
     struct _ioctl_reply *reply = (struct _ioctl_reply *) msg;
@@ -832,7 +840,7 @@ renameobject(struct vinum_rename_msg *msg)
  * message->index is the drive number of the old drive
  * message->otherobject is the drive number of the new drive
  */
-void 
+void
 replaceobject(struct vinum_ioctl_msg *msg)
 {
     struct _ioctl_reply *reply = (struct _ioctl_reply *) msg;