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authorjlemon <jlemon@FreeBSD.org>2001-02-15 16:34:11 +0000
committerjlemon <jlemon@FreeBSD.org>2001-02-15 16:34:11 +0000
commit11781a7431fab609cd00058a63ac09ccddb16854 (patch)
treeee46dbf40488c941cf17b05e69bfe21e4f2d7128 /sys/fs/specfs
parent5655168b87e22a331c5fc3b603901647ff90b2e4 (diff)
downloadFreeBSD-src-11781a7431fab609cd00058a63ac09ccddb16854.zip
FreeBSD-src-11781a7431fab609cd00058a63ac09ccddb16854.tar.gz
Extend kqueue down to the device layer.
Backwards compatible approach suggested by: peter
Diffstat (limited to 'sys/fs/specfs')
-rw-r--r--sys/fs/specfs/spec_vnops.c19
1 files changed, 19 insertions, 0 deletions
diff --git a/sys/fs/specfs/spec_vnops.c b/sys/fs/specfs/spec_vnops.c
index dce8212..35a0a49 100644
--- a/sys/fs/specfs/spec_vnops.c
+++ b/sys/fs/specfs/spec_vnops.c
@@ -62,6 +62,7 @@ static int spec_getpages __P((struct vop_getpages_args *));
static int spec_ioctl __P((struct vop_ioctl_args *));
static int spec_open __P((struct vop_open_args *));
static int spec_poll __P((struct vop_poll_args *));
+static int spec_kqfilter __P((struct vop_kqfilter_args *));
static int spec_print __P((struct vop_print_args *));
static int spec_read __P((struct vop_read_args *));
static int spec_strategy __P((struct vop_strategy_args *));
@@ -87,6 +88,7 @@ static struct vnodeopv_entry_desc spec_vnodeop_entries[] = {
{ &vop_open_desc, (vop_t *) spec_open },
{ &vop_pathconf_desc, (vop_t *) vop_stdpathconf },
{ &vop_poll_desc, (vop_t *) spec_poll },
+ { &vop_kqfilter_desc, (vop_t *) spec_kqfilter },
{ &vop_print_desc, (vop_t *) spec_print },
{ &vop_read_desc, (vop_t *) spec_read },
{ &vop_readdir_desc, (vop_t *) vop_panic },
@@ -330,6 +332,23 @@ spec_poll(ap)
dev = ap->a_vp->v_rdev;
return (*devsw(dev)->d_poll)(dev, ap->a_events, ap->a_p);
}
+
+/* ARGSUSED */
+static int
+spec_kqfilter(ap)
+ struct vop_kqfilter_args /* {
+ struct vnode *a_vp;
+ struct knote *a_kn;
+ } */ *ap;
+{
+ dev_t dev;
+
+ dev = ap->a_vp->v_rdev;
+ if (devsw(dev)->d_flags & D_KQFILTER)
+ return (*devsw(dev)->d_kqfilter)(dev, ap->a_kn);
+ return (1);
+}
+
/*
* Synch buffers associated with a block device
*/
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