Jeremy Allison
2020-Oct-22 15:41 UTC
[Samba] Samba clarification around GPL and VFS modules.
People who follow Samba development may have noticed the following commit that just went into the Samba repo: https://git.samba.org/?p=samba.git;a=blob;f=VFS-License-clarification.txt;h=6b67381cc20412456d7d01a0587c0d627254a2b8;hb=1262b13f4db9502c36579b7dd740d8002e0baac9 For people who don't read git (I'm assuming that's everyone :-) it's a clarification around GPL license boundaries and Samba VFS modules we've been discussing within the Team for a long while now. Here's the text of the new file so people can understand what we're doing here. Hopefully this will make it much clearer to OEMs and vendors using Samba where their GPL requirements begin and end when extending Samba to work with their own unique filesystem technology. Cheers, Jeremy. ---------------------------------------------------- A clarification of the GNU GPL License boundary within the Samba Virtual File System (VFS) layer. Samba is licensed under the GNU GPL. All code committed to the Samba project or creating a derived work must be either licensed under the GNU GPL or a compatible license. Samba has several plug-in interfaces where external code may be called from Samba GNU GPL licensed code. The most important of these is the Samba VFS layer. Samba VFS modules are intimately connected by header files and API definitions to the part of the Samba code that provides file services, and as such, code that implements a plug-in Samba VFS module must be licensed under the GNU GPL or a compatible license. However, Samba VFS modules may themselves call third-party external libraries that are not part of the Samba project and are externally developed and maintained. As long as these third-party external libraries do not use any of the Samba internal structure, APIs or interface definitions created by the Samba project that are licensed under the GNU GPL then it is the view of the Samba Team that such third-party external libraries called from Samba VFS modules are not part of the Samba code and cannot be considered a derived work of Samba for the purposes of GNU GPL licensing. Thus such libraries are not required to be under the GNU GPL or a GNU GPL compatible license. ----------------------------------------------------