1 files changed, 86 insertions, 0 deletions
diff --git a/lib/libifconfig/libifconfig_internal.h b/lib/libifconfig/libifconfig_internal.h
new file mode 100644
index 000000000000..910e90df7d31
--- /dev/null
+++ b/lib/libifconfig/libifconfig_internal.h
@@ -0,0 +1,86 @@
+/*
+ * Copyright (c) 2016-2017, 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.
+ *
+ * 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.
+ */
+
+#pragma once
+
+#include "libifconfig.h"
+
+
+struct errstate {
+	/**
+	 * Type of error.
+	 */
+	ifconfig_errtype errtype;
+
+	/**
+	 * The error occurred in this ioctl() request.
+	 * Populated if errtype = IOCTL
+	 */
+	unsigned long ioctl_request;
+
+	/**
+	 * The value of the global errno variable when the error occurred.
+	 */
+	int errcode;
+};
+
+struct ifconfig_handle {
+	struct errstate error;
+	int sockets[AF_MAX + 1];
+	/** Cached output of getifaddrs */
+	struct ifaddrs *ifap;
+};
+
+/* Fetch the list of interface addrs, if it hasn't already been fetched */
+int ifconfig_getifaddrs(ifconfig_handle_t *h);
+
+/**
+ * Retrieves socket for address family <paramref name="addressfamily"> from
+ * cache, or creates it if it doesn't already exist.
+ * @param addressfamily The address family of the socket to retrieve
+ * @param s The retrieved socket.
+ * @return 0 on success, -1 on failure.
+ * {@example
+ * This example shows how to retrieve a socket from the cache.
+ * {@code
+ * static void myfunc() \{
+ *    int s;
+ *    if (ifconfig_socket(AF_LOCAL, &s) != 0) \{
+ *        // Handle error state here
+ *    \}
+ *    // user code here
+ * \}
+ * }
+ * }
+ */
+int ifconfig_socket(ifconfig_handle_t *h, const int addressfamily, int *s);
+
+/** Function to wrap ioctl() and automatically populate ifconfig_errstate when appropriate.*/
+int ifconfig_ioctlwrap(ifconfig_handle_t *h, const int addressfamily,
+    unsigned long request, void *data);
+
+void ifconfig_error_clear(ifconfig_handle_t *h);
+void ifconfig_error(ifconfig_handle_t *h, ifconfig_errtype type, int error);