initial import of NetBSD tree

2 files changed, 182 insertions, 0 deletions

diff --git a/share/lkm/vfs/module/Makefile b/share/lkm/vfs/module/Makefile
new file mode 100644
index 00000000000..cc94a538c0e
--- /dev/null
+++ b/share/lkm/vfs/module/Makefile
@@ -0,0 +1,75 @@
+#
+# Makefile for newsyscall
+#
+# 05 Jun 93	Terry Lambert		Original
+#
+# Copyright (c) 1993 Terrence R. Lambert.
+# 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 Terrence R. Lambert.
+# 4. The name Terrence R. Lambert may not be used to endorse or promote
+#    products derived from this software without specific prior written
+#    permission.
+#
+# THIS SOFTWARE IS PROVIDED BY TERRENCE R. LAMBERT ``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 TERRENCE R. LAMBERT 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.
+#
+#	$Id: Makefile,v 1.1 1995/10/18 08:44:22 deraadt Exp $
+#
+
+SRCS=kernfsmod.c
+OBJS=$(SRCS:.c=.o)
+
+KSRCS=/sys/miscfs/kernfs/kernfs_vfsops.c /sys/miscfs/kernfs/kernfs_vnops.c
+KOBJS=kernfs_vfsops.o kernfs_vnops.o
+
+MODOBJ=combined.o
+
+KMOD=kernfsmod
+CFLAGS= -O6 -D_KERNEL -I/sys -I.
+
+all:	$(MODOBJ)
+
+clean:
+	rm -f vnode_if.[ch] $(OBJS) $(KOBJS) $(MODOBJ) $(KMOD)
+
+load:
+	modload -o $(KMOD) -e$(KMOD) $(MODOBJ)
+
+unload:
+	modunload -n $(KMOD)
+
+kernfs_vfsops.o: /sys/miscfs/kernfs/kernfs_vfsops.c vnode_if.h
+	$(CC) $(CFLAGS) -c -o $@ $<
+
+kernfs_vnops.o: /sys/miscfs/kernfs/kernfs_vnops.c vnode_if.h
+	$(CC) $(CFLAGS) -c -o $@ $<
+
+vnode_if.h: /sys/kern/vnode_if.sh /sys/kern/vnode_if.src
+	sh /sys/kern/vnode_if.sh /sys/kern/vnode_if.src
+
+$(MODOBJ): $(OBJS) $(KOBJS)
+	$(LD) -r -o $(MODOBJ) $(OBJS) $(KOBJS)
+
+#
+# EOF -- This file has not been truncated
+#
diff --git a/share/lkm/vfs/module/kernfsmod.c b/share/lkm/vfs/module/kernfsmod.c
new file mode 100644
index 00000000000..17becd7d755
--- /dev/null
+++ b/share/lkm/vfs/module/kernfsmod.c
@@ -0,0 +1,107 @@
+/*
+ * kernfsmod.c
+ *
+ * 05 Jun 93	Terry Lambert		Original
+ *
+ * Copyright (c) 1993 Terrence R. Lambert.
+ * 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 Terrence R. Lambert.
+ * 4. The name Terrence R. Lambert may not be used to endorse or promote
+ *    products derived from this software without specific prior written
+ *    permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY TERRENCE R. LAMBERT ``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 TERRENCE R. LAMBERT 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.
+ *
+ *	$Id: kernfsmod.c,v 1.1 1995/10/18 08:44:22 deraadt Exp $
+ */
+#define printf I_HATE_ANSI
+#include <stdio.h>
+#undef printf
+#include <sys/param.h>
+#include <sys/ioctl.h>
+#include <sys/systm.h>
+#include <sys/conf.h>
+#include <sys/mount.h>
+#include <sys/exec.h>
+#include <sys/lkm.h>
+#include <sys/file.h>
+#include <sys/errno.h>
+
+/*
+ * This is the vfsops table from /sys/miscfs/kernfs/kernfs_vfsops.c
+ */
+extern struct vfsops kernfs_vfsops;
+extern struct vnodeopv_desc kernfs_vnodeop_opv_desc;
+
+/*
+ * XXX THE FOLLOWING COMMENT IS PROBABLY BOGUS...	- cgd, 12/24/94
+ * Currently, the mount system call is broken in the way it operates
+ * and the vfssw[] table does not have a character string identifier
+ * for the file system type; therefore, to remount a file system after
+ * it has been mounted in the first place, the offset into the table
+ * must be the same; this will be corrected in future patches, but
+ * not right now.  At the same time the fstab format will need to
+ * change to allow definition without mount of file systems.
+ *
+ * The flags field is a parameter to the init; this could be used to
+ * change the file system operation: for instance, in ISOFS, this
+ * could be used to enable/disable Rockridge extensions.
+ */
+MOD_VFS("kernfs", -1, &kernfs_vfsops)
+
+/*
+ * External entry point; should generally match name of .o file.  The
+ * arguments are always the same for all loaded modules.  The "load",
+ * "unload", and "stat" functions in "DISPATCH" will be called under
+ * their respective circumstances.  If no function is desired, lkm_nofunc()
+ * should be supplied.  They are called with the same arguments (cmd is
+ * included to allow the use of a single function, ver is included for
+ * version matching between modules and the kernel loader for the modules).
+ *
+ * Since we expect to link in the kernel and add external symbols to
+ * the kernel symbol name space in a future version, generally all
+ * functions used in the implementation of a particular module should
+ * be static unless they are expected to be seen in other modules or
+ * to resolve unresolved symbols already existing in the kernel (the
+ * second case is not likely to ever occur).
+ *
+ * The entry point should return 0 unless it is refusing load (in which
+ * case it should return an errno from errno.h).
+ */
+kernfsmod(lkmtp, cmd, ver)
+	struct lkm_table *lkmtp;	
+	int cmd;
+	int ver;
+{
+
+	/*
+	 * This is normally done automatically at boot time if the
+	 * opv_desc is listed in vfs_opv_descs[] in vfs_conf.c.  For
+	 * loaded modules, we have to do it manually.
+	 */
+	vfs_opv_init_explicit(&kernfs_vnodeop_opv_desc);
+	vfs_opv_init_default(&kernfs_vnodeop_opv_desc);
+
+	DISPATCH(lkmtp, cmd, ver, lkm_nofunc, lkm_nofunc, lkm_nofunc)
+}