[src/trunk]: src/sys/miscfs/genfs interfaces and structures used by new genfs...

[chs <chs%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/b5994f7fab49
branches:  trunk
changeset: 515015:b5994f7fab49
user:      chs <chs%NetBSD.org@localhost>
date:      Sat Sep 15 21:33:05 2001 +0000

description:
interfaces and structures used by new genfs_{get,put}pages().

diffstat:

 sys/miscfs/genfs/genfs_node.h |  60 +++++++++++++++++++++++++++++++++++++++++++
 1 files changed, 60 insertions(+), 0 deletions(-)

diffs (64 lines):

diff -r 5adf08fc4266 -r b5994f7fab49 sys/miscfs/genfs/genfs_node.h
--- /dev/null   Thu Jan 01 00:00:00 1970 +0000
+++ b/sys/miscfs/genfs/genfs_node.h     Sat Sep 15 21:33:05 2001 +0000
@@ -0,0 +1,60 @@
+/* $NetBSD: genfs_node.h,v 1.1 2001/09/15 21:33:05 chs Exp $ */
+
+/*
+ * Copyright (c) 2001 Chuck Silvers.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *      This product includes software developed by Chuck Silvers.
+ * 4. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef        _MISCFS_GENFS_GENFS_NODE_H_
+#define        _MISCFS_GENFS_GENFS_NODE_H_
+
+struct genfs_ops {
+       void    (*gop_size)(struct vnode *, off_t, off_t *);
+       int     (*gop_alloc)(struct vnode *, off_t, off_t, int, struct ucred *);
+       int     (*gop_write)(struct vnode *, struct vm_page **, int, int);
+};
+
+#define GOP_SIZE(vp, size, eobp) \
+       (*VTOG(vp)->g_op->gop_size)((vp), (size), (eobp))
+#define GOP_ALLOC(vp, off, len, flags, cred) \
+       (*VTOG(vp)->g_op->gop_alloc)((vp), (off), (len), (flags), (cred))
+#define GOP_WRITE(vp, pgs, npages, flags) \
+       (*VTOG(vp)->g_op->gop_write)((vp), (pgs), (npages), (flags))
+
+struct genfs_node {
+       struct genfs_ops        *g_op;          /* ops vector */
+       struct lock             g_glock;        /* getpages lock */
+};
+
+#define VTOG(vp) ((struct genfs_node *)(vp)->v_data)
+
+void   genfs_size(struct vnode *, off_t, off_t *);
+void   genfs_node_init(struct vnode *, struct genfs_ops *);
+int    genfs_gop_write(struct vnode *, struct vm_page **, int, int);
+
+#endif /* _MISCFS_GENFS_GENFS_NODE_H_ */