From cb8d46a179f2d30ac1cd0a01eb156e1a4c08d717 Mon Sep 17 00:00:00 2001
From: darrenr <darrenr@FreeBSD.org>
Date: Sun, 9 Feb 1997 22:50:16 +0000
Subject: Import IP Filter v3.1.7 into FreeBSD tree

---
 contrib/ipfilter/ml_ipl.c | 167 ++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 167 insertions(+)
 create mode 100644 contrib/ipfilter/ml_ipl.c

(limited to 'contrib/ipfilter/ml_ipl.c')

diff --git a/contrib/ipfilter/ml_ipl.c b/contrib/ipfilter/ml_ipl.c
new file mode 100644
index 0000000..9c3ec3e
--- /dev/null
+++ b/contrib/ipfilter/ml_ipl.c
@@ -0,0 +1,167 @@
+/*
+ * (C)opyright 1993,1994,1995 by Darren Reed.
+ *
+ * Redistribution and use in source and binary forms are permitted
+ * provided that this notice is preserved and due credit is given
+ * to the original author and the contributors.  The author accepts no
+ * responsibility and is not changed in any way.
+ *
+ * I hate legaleese, don't you ?
+ */
+/*
+ * 29/12/94 Added code from Marc Huber <huber@fzi.de> to allow it to allocate
+ * its own major char number! Way cool patch!
+ */
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/time.h>
+#include <sys/file.h>
+#include <sys/conf.h>
+#include <sys/syslog.h>
+#include <sys/buf.h>
+#include <sys/param.h>
+#include <sys/errno.h>
+#include <sys/uio.h>
+#include <sys/vnode.h>
+#include <sundev/mbvar.h>
+#include <sun/autoconf.h>
+#include <sun/vddrv.h>
+#if defined(sun4c) || defined(sun4m)
+#include <sun/openprom.h>
+#endif
+
+#ifndef	IPL_NAME
+#define	IPL_NAME	"/dev/ipl"
+#endif
+
+extern	int	iplattach(), iplopen(), iplclose(), iplioctl(), iplread();
+extern	int	nulldev(), iplidentify(), errno;
+
+struct	cdevsw	ipldevsw = 
+{
+	iplopen, iplclose, iplread, nulldev,
+	iplioctl, nulldev, nulldev, nulldev,
+	0, nulldev,
+};
+
+
+struct	dev_ops	ipl_ops = 
+{
+	1,
+	iplidentify,
+	iplattach,
+	iplopen,
+	iplclose,
+	iplread,
+	NULL,		/* write */
+	NULL,		/* strategy */
+	NULL,		/* dump */
+	0,		/* psize */
+        iplioctl,
+	NULL,		/* reset */
+	NULL		/* mmap */
+};
+
+int	ipl_major = 0;
+
+#ifdef sun4m
+struct	vdldrv	vd = 
+{
+	VDMAGIC_PSEUDO,
+	"ipl",
+	&ipl_ops,
+	NULL,
+	&ipldevsw,
+	0,
+	0,
+	NULL,
+	NULL,
+	NULL,
+	0,
+	1,
+};
+#else /* sun4m */
+struct vdldrv vd =
+{
+	VDMAGIC_PSEUDO,	/* magic */
+	"ipl",		/* name */
+#ifdef sun4c
+	&ipl_ops,	/* dev_ops */
+#else
+	NULL,		/* struct mb_ctlr *mb_ctlr */
+	NULL,		/* struct mb_driver *mb_driver */
+	NULL,		/* struct mb_device *mb_device */
+	0,		/* num ctlrs */
+	1,		/* numdevs */
+#endif /* sun4c */
+	NULL,		/* bdevsw */
+	&ipldevsw,	/* cdevsw */
+	0,		/* block major */
+	0,		/* char major */
+};
+#endif /* sun4m */
+
+extern int vd_unuseddev();
+extern struct cdevsw cdevsw[];
+extern int nchrdev;
+
+xxxinit(fc, vdp, vdi, vds)
+u_int	fc;
+struct	vddrv	*vdp;
+caddr_t	vdi;
+struct	vdstat	*vds;
+{
+	struct	vdlinkage *v;
+	int	i;
+
+	switch (fc)
+	{
+	case VDLOAD:
+		while (ipl_major < nchrdev &&
+		       cdevsw[ipl_major].d_open != vd_unuseddev)
+			ipl_major++;
+		if (ipl_major == nchrdev)
+			return ENODEV;
+		vd.Drv_charmajor = ipl_major;
+		vdp->vdd_vdtab = (struct vdlinkage *)&vd;
+		return ipl_attach(vdi);
+	case VDUNLOAD:
+		return unload(vdp, vdi);
+		
+	case VDSTAT:
+		return 0;
+
+	default:
+		return EIO;
+	}
+}
+
+static unload(vdp, vdi)
+	struct vddrv *vdp;
+	struct vdioctl_unload  *vdi;
+{
+	int	i;
+
+	(void) vn_remove(IPL_NAME, UIO_SYSSPACE, FILE);
+	return ipldetach();
+}
+
+
+static	int	ipl_attach(vdi)
+struct	vdioctl_load	*vdi;
+{
+	struct	vnode	*vp;
+	struct	vattr	vattr;
+	int		error = 0, fmode = S_IFCHR|0600;
+
+	(void) vn_remove(IPL_NAME, UIO_SYSSPACE, FILE);
+	vattr_null(&vattr);
+	vattr.va_type = MFTOVT(fmode);
+	vattr.va_mode = (fmode & 07777);
+	vattr.va_rdev = ipl_major<<8;
+
+	error = vn_create(IPL_NAME, UIO_SYSSPACE, &vattr, EXCL, 0, &vp);
+	if (error == 0)
+		VN_RELE(vp);
+	return iplattach(0);
+}
-- 
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