From 5c7a8cfebd0e37e544e6ca46d2c369917e922fc4 Mon Sep 17 00:00:00 2001
From: "Samuel J. Greear" <sjg@thesjg.com>
Date: Mon, 5 Jul 2010 04:06:50 +0000
Subject: [PATCH] vinum - Add kq support

---
 sys/dev/raid/vinum/vinum.c    | 36 ++++++++++++++++++++++++++++++++++-
 sys/dev/raid/vinum/vinumext.h |  4 ++++
 2 files changed, 39 insertions(+), 1 deletion(-)

diff --git a/sys/dev/raid/vinum/vinum.c b/sys/dev/raid/vinum/vinum.c
index a9ca135dd0..979dc2d86c 100644
--- a/sys/dev/raid/vinum/vinum.c
+++ b/sys/dev/raid/vinum/vinum.c
@@ -45,6 +45,8 @@
 #include "vinumhdr.h"
 #include <sys/sysproto.h>				    /* for sync(2) */
 #include <sys/devicestat.h>
+#include <sys/poll.h>
+#include <sys/event.h>
 #ifdef VINUMDEBUG
 #include <sys/reboot.h>
 int debug = 0;
@@ -56,13 +58,14 @@ extern struct mc malloced[];
 
 struct dev_ops vinum_ops =
 {
-	{ "vinum", VINUM_CDEV_MAJOR, D_DISK },
+	{ "vinum", VINUM_CDEV_MAJOR, D_DISK | D_KQFILTER },
 	.d_open =	vinumopen,
 	.d_close =	vinumclose,
 	.d_read =	physread,
 	.d_write =	physwrite,
 	.d_ioctl =	vinumioctl,
 	.d_poll =	vinumpoll,
+	.d_kqfilter =	vinumkqfilter,
 	.d_strategy =	vinumstrategy,
 	.d_dump =	vinumdump,
 	.d_psize =	vinumsize,
@@ -579,6 +582,37 @@ vinumpoll(struct dev_poll_args *ap)
     return(0);
 }
 
+void
+vinumfilt_detach(struct knote *kn) {}
+
+int
+vinumfilt(struct knote *kn, long hint)
+{
+    cdev_t dev = (cdev_t)kn->kn_hook;
+
+    if (seltrue(dev, POLLIN | POLLRDNORM))
+        return (1);
+
+    return (0);
+}
+
+struct filterops vinumfiltops =
+    { 1, NULL, vinumfilt_detach, vinumfilt };
+
+int
+vinumkqfilter(struct dev_kqfilter_args *ap)
+{
+    if (ap->a_kn->kn_filter == EVFILT_READ) {
+        ap->a_kn->kn_fop = &vinumfiltops;
+        ap->a_kn->kn_hook = (caddr_t)ap->a_head.a_dev;
+        ap->a_result = 0;
+    } else {
+        ap->a_result = 1;
+    }
+
+    return (0);
+}
+
 /* Local Variables: */
 /* fill-column: 50 */
 /* End: */
diff --git a/sys/dev/raid/vinum/vinumext.h b/sys/dev/raid/vinum/vinumext.h
index 94ed10fdf5..687f7fc227 100644
--- a/sys/dev/raid/vinum/vinumext.h
+++ b/sys/dev/raid/vinum/vinumext.h
@@ -139,6 +139,10 @@ d_ioctl_t vinumioctl;
 d_dump_t vinumdump;
 d_psize_t vinumsize;
 d_poll_t vinumpoll;
+d_kqfilter_t vinumkqfilter;
+
+int vinumfilt(struct knote *, long);
+void vinumfilt_detach(struct knote *);
 
 int vinumstart(cdev_t dev, struct bio *bio, int reviveok);
 int launch_requests(struct request *rq, int reviveok);
-- 
2.41.0