Fix issue #42: Use ftw() to recursively clean up dirs.

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

finit.c

@@ -25,6 +25,7 @@
 #include "config.h"		/* Generated by configure script */
 
 #include <ctype.h>
+#include <ftw.h>
 #include <glob.h>
 #include <dirent.h>
 #ifdef HAVE_FSTAB_H
@@ -117,6 +118,27 @@ static int fsck(int pass)
 	return 0;
 }
 
+static int do_clean(const char *fpath, const struct stat *UNUSED(sb), int UNUSED(tflag), struct FTW *UNUSED(ftwbuf))
+{
+	_d("Removing %s", fpath);
+	remove(fpath);
+
+	return 0;
+}
+
+static void bootclean(void)
+{
+	char *dir[] = {
+		"/tmp/",
+		"/var/run/",
+		"/var/lock/",
+		NULL
+	};
+
+	for (int i = 0; dir[i]; i++)
+		nftw(dir[i], do_clean, 20, FTW_DEPTH);
+}
+
 static void networking(void)
 {
 	size_t i;
@@ -378,7 +400,7 @@ int main(int argc, char* argv[])
 	umask(0022);
 
 	/* Cleanup of stale files, if any still linger on. */
-	run_interactive("rm -rf /tmp/* /tmp/.??* /var/run/* /var/lock/*", "Cleaning up temporary directories");
+	bootclean();
 
 	/* Base FS up, enable standard SysV init signals */
 	sig_setup(&loop);