--- /dev/null
+/* $Header$
+ *
+ * Reads a tar file from standard input, and extracts the contents as
+ * the user specified by uid as an argument.
+ *
+ * (c) Copyright 1988 by the Massachusetts Institute of Technology.
+ * For copying and distribution information, please see the file
+ * <mit-copyright.h>.
+ */
+
+#include <mit-copyright.h>
+
+main(argc,argv)
+int argc;
+char **argv;
+{
+ if (getuid() != 0) {
+ write(2, "You must be root to run sms_untar\n", 34);
+ exit(1);
+ }
+
+ if (argc != 2) {
+ write(2, "Usage: sms_untar uid\n", 21);
+ write(2, "sms_untar takes a tar file as standard input.\n", 46);
+ exit(2);
+ }
+
+ setuid(atoi(argv[1]));
+ execl("/bin/tar", "tar", "xfp", "-", 0);
+ write(2, "sms_untar: unable to exec /bin/tar\n", 35);
+ exit(3);
+}