diff --git a/helpers/setuid/setuid-wrapper.c b/helpers/setuid/setuid-wrapper.c
new file mode 100644
index 000000000000..04923896d4e3
--- /dev/null
+++ b/helpers/setuid/setuid-wrapper.c
@@ -0,0 +1,77 @@
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <dirent.h>
+
+extern char **environ;
+
+static char * wrapperDir = "/home/root/nixos/helpers/setuid";
+
+int main(int argc, char * * argv)
+{
+    char self[PATH_MAX];
+    
+    int len = readlink("/proc/self/exe", self, sizeof(self) - 1);
+    if (len == -1) abort();
+    self[len] = 0;
+
+    //printf("self = %s, ch = %c\n", self, self[strlen(wrapperDir)]);
+
+    
+    /* Make sure that we are being executed from the right location,
+       i.e., `wrapperDir'.  This is to prevent someone from
+       creating hard link `X' from some other location, along with a
+       false `X.real' file, to allow arbitrary programs from being
+       executed setuid. */
+    if ((strncmp(self, wrapperDir, sizeof(wrapperDir)) != 0) ||
+        (self[strlen(wrapperDir)] != '/'))
+        abort();
+
+    
+    /* Make *really* *really* sure that we were executed as `self',
+       and not, say, as some other setuid program.  That is, our
+       effective uid/gid should match the uid/gid of `self'. */
+    //printf("%d %d\n", geteuid(), getegid());
+
+    struct stat st;
+    if (lstat(self, &st) == -1) abort();
+
+    //printf("%d %d\n", st.st_uid, st.st_gid);
+    
+    if ((st.st_mode & S_ISUID) != 0 &&
+        st.st_uid != geteuid())
+        abort();
+
+    if ((st.st_mode & S_ISGID) != 0 &&
+        st.st_gid != getegid())
+        abort();
+
+    /* And, of course, we shouldn't be writable. */
+    if (st.st_mode & (S_IWGRP | S_IWOTH))
+        abort();
+
+
+    /* Read the path of the real (wrapped) program from <self>.real. */
+    char realFN[PATH_MAX + 10];
+    if (snprintf(realFN, sizeof(realFN), "%s.real", self) >= sizeof(realFN))
+        abort();
+
+    int fdSelf = open(realFN, O_RDONLY);
+    if (fdSelf == -1) abort();
+
+    char real[PATH_MAX];
+    len = read(fdSelf, real, PATH_MAX);
+    if (len == -1) abort();
+    if (len == sizeof(real)) abort();
+    real[len] = 0;
+    
+    //printf("real = %s, len = %d\n", real, len);
+
+    execve(real, argv, environ);
+    
+    exit(1);
+}