Make sure we call setgroups() after setuid(). (Ethan Benson)

[rsync/rsync.git] / clientserver.c

diff --git a/clientserver.c b/clientserver.c
index 87e7990..6f3edfa 100644 (file)
--- a/clientserver.c
+++ b/clientserver.c
@@ -294,6 +294,16 @@ static int rsync_module(int fd, int i)
                        return -1;
                }
 
+#ifdef HAVE_SETGROUPS
+               /* Get rid of any supplementary groups this process
+                * might have inheristed. */
+               if (setgroups(0, NULL)) {
+                       rsyserr(FERROR, errno, "setgroups failed");
+                       io_printf(fd, "@ERROR: setgroups failed\n");
+                       return -1;
+               }
+#endif
+
                am_root = (getuid() == 0);
        }