new modules for SunOS 4

[ppp.git] / sunos4 / ppp_ahdlc_vdcmd.c

diff --git a/sunos4/ppp_ahdlc_vdcmd.c b/sunos4/ppp_ahdlc_vdcmd.c
new file mode 100644 (file)
index 0000000..2dbe826
--- /dev/null
+++ b/sunos4/ppp_ahdlc_vdcmd.c
@@ -0,0 +1,57 @@
+#include <sys/types.h>
+#include <sys/errno.h>
+#include <sys/conf.h>
+#include <sun/vddrv.h>
+
+extern struct streamtab ppp_ahdlcinfo;
+extern int ppp_ahdlc_count;
+
+static struct vdldrv vd = {
+    VDMAGIC_USER,
+    "ppp_ahdl"
+};
+
+static int fmodsw_index = -1;
+
+int
+ppp_ahdlc_vdcmd(fun, vdp, vdi, vds)
+    unsigned int fun;
+    struct vddrv *vdp;
+    addr_t vdi;
+    struct vdstat *vds;
+{
+    int n;
+
+    switch (fun) {
+    case VDLOAD:
+       vdp->vdd_vdtab = (struct vdlinkage *) &vd;
+       if (fmodsw_index >= 0)
+           return EBUSY;
+       for (n = 0; n < fmodcnt; ++n)
+           if (fmodsw[n].f_str == 0)
+               break;
+       if (n >= fmodcnt)
+           return ENODEV;
+       strncpy(fmodsw[n].f_name, vd.Drv_name, FMNAMESZ+1);
+       fmodsw[n].f_str = &ppp_ahdlcinfo;
+       fmodsw_index = n;
+       break;
+
+    case VDUNLOAD:
+       if (ppp_ahdlc_count > 0)
+           return EBUSY;
+       if (fmodsw_index <= 0)
+           return EINVAL;
+       fmodsw[fmodsw_index].f_name[0] = 0;
+       fmodsw[fmodsw_index].f_str = 0;
+       fmodsw_index = -1;
+       break;
+
+    case VDSTAT:
+       break;
+
+    default:
+       return EIO;
+    }
+    return 0;
+}