Refactor main() into more functions and convert #ifdef hell into plugins.

Signed-off-by: Joachim Nilsson <troglobit@gmail.com>

plugins/resolvconf.c

@@ -0,0 +1,92 @@
+/* Setup necessary files for resolvconf
+ *
+ * Copyright (c) 2012  Joachim Nilsson <troglobit@gmail.com>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#include "finit.h"
+#include "helpers.h"
+#include "plugin.h"
+
+static void setup(void *UNUSED(arg))
+{
+#ifdef USE_ETC_RESOLVCONF_RUN
+	DIR *dir;
+	struct dirent *d;
+#endif
+
+	_d("Setting up the resolver ...");
+#ifdef USE_ETC_RESOLVCONF_RUN
+	makepath("/dev/shm/network");
+	makepath("/dev/shm/resolvconf/interface");
+
+	if ((dir = opendir("/etc/resolvconf/run/interface")) != NULL) {
+		while ((d = readdir(dir)) != NULL) {
+			if (isalnum(d->d_name[0]))
+				continue;
+			snprintf(line, sizeof(line),
+				 "/etc/resolvconf/run/interface/%s", d->d_name);
+			unlink(line);
+		}
+
+		closedir(dir);
+	}
+#endif
+
+#ifdef USE_VAR_RUN_RESOLVCONF
+	makepath("/var/run/resolvconf/interface");
+	symlink("../../../etc/resolv.conf", "/var/run/resolvconf/resolv.conf");
+#endif
+
+#ifdef USE_ETC_RESOLVCONF_RUN
+	touch("/etc/resolvconf/run/enable-updates");
+
+	chdir("/etc/resolvconf/run/interface");
+	run_parts("/etc/resolvconf/update.d", "-i", NULL);
+	chdir("/");
+#endif /* USE_ETC_RESOLVCONF_RUN */
+}
+
+static plugin_t plugin = {
+	.hook[HOOK_POST_SIGSETUP] = {
+		.cb  = setup
+	},
+};
+
+static void init_plugin(void)
+{
+	plugin_register(&plugin);
+}
+
+static void exit_plugin(void)
+{
+	plugin_unregister(&plugin);
+}
+
+PLUGIN_INIT(init_plugin)
+PLUGIN_EXIT(exit_plugin)
+
+/**
+ * Local Variables:
+ *  version-control: t
+ *  indent-tabs-mode: t
+ *  c-file-style: "linux"
+ * End:
+ */