cffi-posix/cffi-errno

diff --git a/cffi-errno.asd b/cffi-errno.asd
index eddd8f4..f6649aa 100644
--- a/cffi-errno.asd
+++ b/cffi-errno.asd
@@ -1,3 +1,20 @@
+;;
+;;  cffi-errno  -  Common Lisp wrapper for Unix error codes
+;;
+;;  Copyright 2017 Thomas de Grivel <thoxdg@gmail.com>
+;;
+;;  Permission to use, copy, modify, and distribute this software for any
+;;  purpose with or without fee is hereby granted, provided that the above
+;;  copyright notice and this permission notice appear in all copies.
+;;
+;;  THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+;;  WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+;;  MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+;;  ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+;;  WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+;;  ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+;;  OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+;;
 
 (in-package :common-lisp-user)
 
diff --git a/cffi-errno.lisp b/cffi-errno.lisp
index e7ded23..38d9a80 100644
--- a/cffi-errno.lisp
+++ b/cffi-errno.lisp
@@ -1,3 +1,20 @@
+;;
+;;  cffi-errno  -  Common Lisp wrapper for Unix error codes
+;;
+;;  Copyright 2017 Thomas de Grivel <thoxdg@gmail.com>
+;;
+;;  Permission to use, copy, modify, and distribute this software for any
+;;  purpose with or without fee is hereby granted, provided that the above
+;;  copyright notice and this permission notice appear in all copies.
+;;
+;;  THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+;;  WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+;;  MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+;;  ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+;;  WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+;;  ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+;;  OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+;;
 
 (in-package :cffi-errno)
 
diff --git a/grovel-errno.lisp b/grovel-errno.lisp
index 4e57bc6..d21da2d 100644
--- a/grovel-errno.lisp
+++ b/grovel-errno.lisp
@@ -1,3 +1,20 @@
+;;
+;;  cffi-errno  -  Common Lisp wrapper for Unix error codes
+;;
+;;  Copyright 2017 Thomas de Grivel <thoxdg@gmail.com>
+;;
+;;  Permission to use, copy, modify, and distribute this software for any
+;;  purpose with or without fee is hereby granted, provided that the above
+;;  copyright notice and this permission notice appear in all copies.
+;;
+;;  THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+;;  WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+;;  MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+;;  ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+;;  WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+;;  ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+;;  OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+;;
 
 (in-package :cffi-errno)
 
diff --git a/package.lisp b/package.lisp
index 47d3d5d..9343168 100644
--- a/package.lisp
+++ b/package.lisp
@@ -1,3 +1,20 @@
+;;
+;;  cffi-errno  -  Common Lisp wrapper for Unix error codes
+;;
+;;  Copyright 2017 Thomas de Grivel <thoxdg@gmail.com>
+;;
+;;  Permission to use, copy, modify, and distribute this software for any
+;;  purpose with or without fee is hereby granted, provided that the above
+;;  copyright notice and this permission notice appear in all copies.
+;;
+;;  THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+;;  WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+;;  MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+;;  ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+;;  WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+;;  ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+;;  OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+;;
 
 (in-package :common-lisp)