1 files changed, 81 insertions, 0 deletions
diff --git a/mdk-stage1/ppp/sunos4/ppp_vdcmd.c b/mdk-stage1/ppp/sunos4/ppp_vdcmd.c
new file mode 100644
index 000000000..68095c92e
--- /dev/null
+++ b/mdk-stage1/ppp/sunos4/ppp_vdcmd.c
@@ -0,0 +1,81 @@
+#include <sys/types.h>
+#include <sys/errno.h>
+#include <sys/conf.h>
+#include <sun/vddrv.h>
+
+extern struct streamtab pppinfo;
+extern int ppp_count;
+extern int nchrdev;
+
+static struct vdldrv vd = {
+    VDMAGIC_PSEUDO,
+    "ppp"
+};
+
+extern int nodev();
+
+static struct cdevsw ppp_cdevsw = {
+    nodev, nodev, nodev, nodev, nodev, nodev, nodev, 0,
+    &pppinfo
+};
+
+static struct cdevsw old_entry;
+
+int
+ppp_vdcmd(fun, vdp, vdi, vds)
+    unsigned int fun;
+    struct vddrv *vdp;
+    addr_t vdi;
+    struct vdstat *vds;
+{
+    static int majnum = -1;
+    int n, maj;
+
+    switch (fun) {
+    case VDLOAD:
+	/*
+	 * It seems like modload doesn't install the cdevsw entry
+	 * for us.  Oh well...
+	 */
+	for (maj = 1; maj < nchrdev; ++maj)
+	    if (cdevsw[maj].d_open == vd_unuseddev)
+		break;
+	if (maj >= nchrdev)
+	    return ENODEV;
+	vd.Drv_charmajor = maj;
+	old_entry = cdevsw[maj];
+	cdevsw[maj] = ppp_cdevsw;
+	vd.Drv_cdevsw = &ppp_cdevsw;
+	vdp->vdd_vdtab = (struct vdlinkage *) &vd;
+	majnum = maj;
+	break;
+
+    case VDUNLOAD:
+	if (ppp_count > 0)
+	    return EBUSY;
+	if (vd.Drv_charmajor > 0)
+	    cdevsw[vd.Drv_charmajor] = old_entry;
+	break;
+
+    case VDSTAT:
+	/*
+	 * We have to fool the modstat command into thinking
+	 * that this module is actually a driver! This is
+	 * so that installation commands that use the -exec
+	 * option of modload to run a shell script find out
+	 * the block and/or char major numbers of the driver
+	 * loaded (so that the shell script can go off to
+	 * /dev and *MAKE* the bloody device nodes- remember
+	 * they might change from one load to another if
+	 * you don't hardwire the number!).
+	 */
+	vds->vds_magic = VDMAGIC_DRV;
+	vds->vds_modinfo[0] = (char) 0;
+	vds->vds_modinfo[1] = (char) majnum;
+	break;
+
+    default:
+	return EIO;
+    }
+    return 0;
+}