Hi, On Mon, 27 Sep 2010 19:59:54 +0900, Jiro SEKIBA wrote: > Hi, > > At Sat, 18 Sep 2010 01:20:00 +0900 (JST), > Ryusuke Konishi wrote: > > > > Hi, > > On Fri, 17 Sep 2010 18:15:59 +0900, Jiro SEKIBA wrote: > > > Hi, > > > > > > I think it would be good to have a generic libraries for other user land tools, > > > like parted, for the purpose to modify/tweek file system off line. > > > At least, resize/fsck/mkfs are the generic functionalities that parted > > > can handle. So it's good if there is a library that can perform > > > those things to avoid implementing same thing all over the place. > > > > > > One big problem for parted is that parted is GPL3 and libnilfs2 is GPL2 X). > > > Still, contributers of libnilfs2 are countable, so maybe we can get agreements > > > from all contributers to change licence to LGPL2, isn't it? > > > > Definitely yes. I think we should migrate the licence of the library > > to LGPL2. > > > > One practical problem is that some of the source files derive the > > kernel code, and they are licensed under GPLv2. > > > > For example, nilfs2_fs.h and crc32.c are just such ones. > > > > Do you think we need replacement for these? > > We could choose to change the licence as LGPL like mqueue.h (*1). > However, we may be able to think that license of nilfs2_fs.h won't affect > license of user land tools. > At least, Linus stated that "There's a > clarification that user-space programs that use the standard system call > interfaces aren't considered derived works, ..." (*2). > > *1) http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=blob_plain;f=include/linux/mqueue.h;hb=HEAD > *2) http://kerneltrap.org/node/1735 "unistd.h" is distributed under LGPL. So, the above Linus' statement sounds like saying just fundamental charateristics of LGPL. The point of "nilfs2_fs.h" issue differs from that. A copy of nilfs2_fs.h is actually included in nilfs-utils, and the nilfs library is depending on the copy. The "mqueue.h" solution seems to be an approved manner (sigh). Another solution is extracting requisites from "nilfs2_fs.h" and rewriting them under LGPL for the library and userland programs. Or, do you know any examples of GPL header file whose library is licensed under LGPL? > While, crc32.c must be replaced other implementation :(. > I'll search lgpled implementation. OK, let's replace it with a compatible one if we change the library license to LGPL. Thanks, Ryusuke Konishi -- To unsubscribe from this list: send the line "unsubscribe linux-nilfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
