1 files changed, 100 insertions, 0 deletions
diff --git a/lib/libifc/libifc_internal.c b/lib/libifc/libifc_internal.c
new file mode 100644
index 000000000000..341cec419323
--- /dev/null
+++ b/lib/libifc/libifc_internal.c
@@ -0,0 +1,100 @@
+/*
+ * Copyright (c) 2016, Marie Helene Kvello-Aune
+ * 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,
+ * thislist 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. Neither the name of the copyright holder nor the names of its contributors
+ * may be used to endorse or promote products derived from this software without
+ * specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "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 COPYRIGHT HOLDER OR CONTRIBUTORS 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.
+ *
+ * $FreeBSD$
+ */
+
+
+#include <net/if.h>
+
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/ioctl.h>
+#include <unistd.h>
+
+
+#include "libifc.h" // Needed for libifc_errstate
+#include "libifc_internal.h"
+
+int
+libifc_ioctlwrap_ret(libifc_handle_t *h, unsigned long request, int rcode)
+{
+	if (rcode != 0) {
+		h->error.errtype = IOCTL;
+		h->error.ioctl_request = request;
+		h->error.errcode = errno;
+	}
+	return (rcode);
+}
+
+
+int
+libifc_ioctlwrap(libifc_handle_t *h, const int addressfamily,
+    unsigned long request, struct ifreq *ifr)
+{
+	int s;
+
+	if (libifc_socket(h, addressfamily, &s) != 0) {
+		return (-1);
+	}
+
+	int rcode = ioctl(s, request, ifr);
+	return (libifc_ioctlwrap_ret(h, request, rcode));
+}
+
+
+/*
+ * Function to get socket for the specified address family.
+ * If the socket doesn't already exist, attempt to create it.
+ */
+int libifc_socket(libifc_handle_t *h, const int addressfamily, int *s)
+{
+	if (addressfamily > AF_MAX) {
+		h->error.errtype = SOCKET;
+		h->error.errcode = EINVAL;
+		return (-1);
+	}
+
+	if (h->sockets[addressfamily] != -1) {
+		*s = h->sockets[addressfamily];
+		return (0);
+	}
+
+	/* We don't have a socket of that type available. Create one. */
+	h->sockets[addressfamily] = socket(addressfamily, SOCK_DGRAM, 0);
+	if (h->sockets[addressfamily] == -1) {
+		h->error.errtype = SOCKET;
+		h->error.errcode = errno;
+		return (-1);
+	}
+
+	*s = h->sockets[addressfamily];
+	return (0);
+}