1 files changed, 87 insertions, 0 deletions

diff --git a/lkm/linux/linux.c b/lkm/linux/linux.c
new file mode 100644
index 000000000000..b3da352d26d3
--- /dev/null
+++ b/lkm/linux/linux.c
@@ -0,0 +1,87 @@
+/*-
+ * Copyright (c) 1994 Søren Schmidt
+ * 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 
+ *    in this position and unchanged.
+ * 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. The name of the author may not be used to endorse or promote products
+ *    derived from this software withough 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.
+ *
+ *	$Id: linux.c,v 1.13 1998/09/17 22:08:34 msmith Exp $
+ */
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/exec.h>
+#include <sys/conf.h>
+#include <sys/sysent.h>
+#include <sys/lkm.h>
+#include <sys/imgact_elf.h>
+#include "i386/linux/linux.h"
+
+extern const struct execsw linux_execsw;
+
+MOD_EXEC(linux, -1, &linux_execsw);
+
+extern Elf32_Brandinfo *linux_brandlist[];
+
+static int
+linux_load(struct lkm_table *lkmtp, int cmd)
+{
+	Elf32_Brandinfo **brandinfo;
+	int error;
+
+	error = 0;
+
+	for (brandinfo = &linux_brandlist[0]; *brandinfo != NULL; ++brandinfo)
+		if (elf_insert_brand_entry(*brandinfo) < 0)
+			error = 1;
+
+	if (error)
+		printf("Could not install ELF interpreter entry\n");
+	/* uprintf("Linux emulator installed\n"); XXX - shut up, you! */
+	return 0;
+}
+
+static int
+linux_unload(struct lkm_table *lkmtp, int cmd)
+{
+	Elf32_Brandinfo **brandinfo;
+	int error;
+
+	error = 0;
+
+	for (brandinfo = &linux_brandlist[0]; *brandinfo != NULL; ++brandinfo)
+		if (elf_remove_brand_entry(*brandinfo) < 0)
+			error = 1;
+
+	if (error)
+		uprintf("Could not deinstall ELF interpreter entry\n");
+	uprintf("Linux emulator removed\n");
+	return 0;
+}
+
+int
+linux_mod(struct lkm_table *lkmtp, int cmd, int ver)
+{
+	MOD_DISPATCH(linux,lkmtp, cmd, ver,
+		linux_load, linux_unload, lkm_nullcmd);
+}