copyright: Adopt the Signed-off-by convention

Signed-off-by: Ian Jackson <ijackson@chiark.greenend.org.uk>

diff --git a/DEVELOPER-CERTIFICATE b/DEVELOPER-CERTIFICATE
new file mode 100644 (file)
index 0000000..912d22e
--- /dev/null
+++ b/DEVELOPER-CERTIFICATE
@@ -0,0 +1,38 @@
+Developer Certificate of Origin
+Version 1.1
+
+Copyright (C) 2004, 2006 The Linux Foundation and its contributors.
+1 Letterman Drive
+Suite D4700
+San Francisco, CA, 94129
+
+Everyone is permitted to copy and distribute verbatim copies of this
+license document, but changing it is not allowed.
+
+
+Developer's Certificate of Origin 1.1
+
+By making a contribution to this project, I certify that:
+
+(a) The contribution was created in whole or in part by me and I
+    have the right to submit it under the open source license
+    indicated in the file; or
+
+(b) The contribution is based upon previous work that, to the best
+    of my knowledge, is covered under an appropriate open source
+    license and I have the right under that license to submit that
+    work with modifications, whether created in whole or in part
+    by me, under the same open source license (unless I am
+    permitted to submit under a different license), as indicated
+    in the file; or
+
+(c) The contribution was provided directly to me by some other
+    person who certified (a), (b) or (c) and I have not modified
+    it.
+
+(d) I understand and agree that this project and the contribution
+    are public and that a record of the contribution (including all
+    personal information I submit with it, including my sign-off) is
+    maintained indefinitely and may be redistributed consistent with
+    this project or the open source license(s) involved.
+

diff --git a/LICENCE.txt b/LICENCE.txt
index 2113d1a888fff9e4e2101c3a453dfa37ef5835b4..22f126c3f3e853a676f78510bd3cc4580f65baef 100644 (file)
--- a/LICENCE.txt
+++ b/LICENCE.txt
@@ -26,6 +26,25 @@ Some files contain a notice with the abbreviated form:
 As is conventional, this should be read as a licence grant.
 
 
+Contributing
+============
+
+Contributions to secnet are accepted based on the git commit
+Signed-off-by convention, by which the contributors' certify their
+contributions according to the Developer Certificate of Origin version
+1.1 - see the file DEVELOPER-CERTIFICATE.
+
+If you create a new file please be sure to add an appropriate licence
+header.  In the main parts of innduct this should be something like:
+ *  innduct
+ *  tailing reliable realtime streaming feeder for inn
+ *  foo.c - example file being added
+ *
+ *  Copyright Ian Jackson <ijackson@chiark.greenend.org.uk>
+ *  and contributors; see LICENCE.txt.
+ *  SPDX-License-Identifier: GPL-3.0-or-later
+
+
 
 (I believe that when you compile and link this as part of the inn2
 build, with the Makefile runes I have provided, all the libraries