MFp4: Add tmpfs, an efficient memory file system.

Please note that, this is currently considered as an
experimental feature so there could be some rough
edges.  Consult http://wiki.freebsd.org/TMPFS for
more information.

For now, connect tmpfs to build on i386 and amd64
architectures only.  Please let us know if you have
success with other platforms.

This work was developed by Julio M. Merino Vidal
for NetBSD as a SoC project; Rohit Jalan ported it
from NetBSD to FreeBSD.  Howard Su and Glen Leeder
are worked on it to continue this effort.

Obtained from:	NetBSD via p4
Submitted by:	Howard Su (with some minor changes)
Approved by:	re (kensmith)

1 files changed, 85 insertions, 0 deletions

diff --git a/sys/fs/tmpfs/tmpfs_vnops.h b/sys/fs/tmpfs/tmpfs_vnops.h
new file mode 100644
index 0000000..dec3b05
--- /dev/null
+++ b/sys/fs/tmpfs/tmpfs_vnops.h
@@ -0,0 +1,85 @@
+/*	$NetBSD: tmpfs_vnops.h,v 1.7 2005/12/03 17:34:44 christos Exp $	*/
+
+/*
+ * Copyright (c) 2005 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to The NetBSD Foundation
+ * by Julio M. Merino Vidal, developed as part of Google's Summer of Code
+ * 2005 program.
+ *
+ * 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 the NetBSD
+ *        Foundation, Inc. and its contributors.
+ * 4. Neither the name of The NetBSD Foundation nor the names of its
+ *    contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
+ * ``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 FOUNDATION OR CONTRIBUTORS
+ * 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.
+ *
+ * $FreeBSD$
+ */
+
+#ifndef _FS_TMPFS_TMPFS_VNOPS_H_
+#define _FS_TMPFS_TMPFS_VNOPS_H_
+
+#if !defined(_KERNEL)
+#error not supposed to be exposed to userland.
+#endif
+
+/* --------------------------------------------------------------------- */
+
+/*
+ * Declarations for tmpfs_vnops.c.
+ */
+
+extern struct vop_vector tmpfs_vnodeop_entries;
+
+vop_cachedlookup_t tmpfs_lookup;
+vop_create_t	tmpfs_create;
+vop_mknod_t	tmpfs_mknod;
+vop_open_t	tmpfs_open;
+vop_close_t	tmpfs_close;
+vop_access_t	tmpfs_access;
+vop_getattr_t	tmpfs_getattr;
+vop_setattr_t	tmpfs_setattr;
+vop_read_t	tmpfs_read;
+vop_write_t	tmpfs_write;
+vop_fsync_t	tmpfs_fsync;
+vop_remove_t	tmpfs_remove;
+vop_link_t	tmpfs_link;
+vop_rename_t	tmpfs_rename;
+vop_mkdir_t	tmpfs_mkdir;
+vop_rmdir_t	tmpfs_rmdir;
+vop_symlink_t	tmpfs_symlink;
+vop_readdir_t	tmpfs_readdir;
+vop_readlink_t	tmpfs_readlink;
+vop_inactive_t	tmpfs_inactive;
+vop_reclaim_t	tmpfs_reclaim;
+vop_print_t	tmpfs_print;
+vop_pathconf_t	tmpfs_pathconf;
+vop_advlock_t	tmpfs_advlock;
+vop_vptofh_t	tmpfs_vptofh;
+
+/* --------------------------------------------------------------------- */
+
+#endif /* _FS_TMPFS_TMPFS_VNOPS_H_ */