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Sun, 30 Aug 2020 01:05:29 -0700 (PDT) MIME-Version: 1.0 References: <20200826094948.333c67b0.freebsd@edvax.de> <20200829171622180444664@bob.proulx.com> <20200830082621.b38ce63f5c97b580f843503a@sohara.org> In-Reply-To: <20200830082621.b38ce63f5c97b580f843503a@sohara.org> From: Mehmet Erol Sanliturk Date: Sun, 30 Aug 2020 11:04:52 +0300 Message-ID: Subject: Re: diff is a little diff -- erent To: "Steve O'Hara-Smith" Cc: FreeBSD Questions Mailing List X-Rspamd-Queue-Id: 4BfQqv1sPnz4sNH X-Spamd-Bar: ---- Authentication-Results: mx1.freebsd.org; dkim=pass header.d=gmail.com header.s=20161025 header.b=kjwzEhq0; dmarc=pass (policy=none) header.from=gmail.com; spf=pass (mx1.freebsd.org: domain of mesanliturk@gmail.com designates 2607:f8b0:4864:20::c32 as permitted sender) smtp.mailfrom=mesanliturk@gmail.com X-Spamd-Result: default: False [-4.17 / 15.00]; ARC_NA(0.00)[]; NEURAL_HAM_MEDIUM(-1.02)[-1.022]; R_DKIM_ALLOW(-0.20)[gmail.com:s=20161025]; RCVD_TLS_ALL(0.00)[]; FROM_HAS_DN(0.00)[]; DWL_DNSWL_NONE(0.00)[gmail.com:dkim]; R_SPF_ALLOW(-0.20)[+ip6:2607:f8b0:4000::/36:c]; FREEMAIL_FROM(0.00)[gmail.com]; MIME_GOOD(-0.10)[multipart/alternative,text/plain]; PREVIOUSLY_DELIVERED(0.00)[freebsd-questions@freebsd.org]; NEURAL_HAM_LONG(-1.01)[-1.010]; TO_MATCH_ENVRCPT_SOME(0.00)[]; TO_DN_ALL(0.00)[]; DKIM_TRACE(0.00)[gmail.com:+]; RCPT_COUNT_TWO(0.00)[2]; DMARC_POLICY_ALLOW(-0.50)[gmail.com,none]; RCVD_IN_DNSWL_NONE(0.00)[2607:f8b0:4864:20::c32:from]; NEURAL_HAM_SHORT(-1.14)[-1.139]; FROM_EQ_ENVFROM(0.00)[]; MIME_TRACE(0.00)[0:+,1:+,2:~]; FREEMAIL_ENVFROM(0.00)[gmail.com]; ASN(0.00)[asn:15169, ipnet:2607:f8b0::/32, country:US]; TAGGED_FROM(0.00)[]; MAILMAN_DEST(0.00)[freebsd-questions]; RCVD_COUNT_TWO(0.00)[2] Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Content-Filtered-By: Mailman/MimeDel 2.1.33 X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.33 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 30 Aug 2020 08:05:32 -0000 On Sun, Aug 30, 2020 at 10:26 AM Steve O'Hara-Smith wrote: > On Sun, 30 Aug 2020 09:57:48 +0300 > Mehmet Erol Sanliturk wrote: > > > There is NOT a rule in the GPL that a GPL based operating system is no= t > > allowed to run a > > closed source software as long as the closed source software does NOT > use > > a GPL licensed part . > > > > The main point is that requirement . > > Indeed the crux is modifying code released under GPL, if you do > that then the modifications must be released under GPL even if the > modifications are much larger than the original code. At least that's my > understanding but when it matters always consult a specialist lawyer. > > -- > Steve O'Hara-Smith > _______________________________________________ > > You are right . Please see " https://www.kernel.org/doc/html/v4.18/process/license-rules.html Linux kernel licensing rules The Linux Kernel is provided under the terms of the GNU General Public License version 2 only (GPL-2.0), as provided in LICENSES/preferred/GPL-2.0, with an explicit syscall exception described in LICENSES/exceptions/Linux-syscall-note, as described in the COPYING file. This documentation file provides a description of how each source file should be annotated to make its license clear and unambiguous. It doesn=E2= =80=99t replace the Kernel=E2=80=99s license. " and please notice " with an explicit syscall exception described in LICENSES/exceptions/Linux-syscall-note " The above exception is allowing to run closed source software in the Linux operating system . The routines are used ( when a syscall is issued ) by the operating system , not the issue generated program , even in that case closed source program is depending on a GPL licensed part . If there is not any exception to the GPL license usage like the above mentioned , the closed source program should be open sourced . For the FreeBSD case : If there are GPL parts in the base system , no one can use ( FreeBSD operating system base ) as a part of any proprietary ( closed source ) system which is not an acceptable situation for companies attempting to produce a commercial product depending on FreeBSD base system . This means it is likely that they will not need to support the FreeBSD project . Money is not raining on to commercial companies like water rains . ( I am NOT affiliated into ANY commercial company or activity . Only it is necessary to think how they are operating in their environment . ) Mehmet Erol Sanliturk