Contents
Do kernel modules have to be GPL?
Some would hold that all kernel modules are derived works of the kernel, so have to be GPLed regardless of header inclusion. Alternatively your closed module derives from the GPL module, and the GPL module derives from the kernel, so the closed module has to also be GPL.
Do kernel modules have to be open source?
2 Answers. You can’t. If you write your driver for the Linux kernel, it means it’s “derived” from the Linux kernel1. The Linux kernel is under GPLv2, which implies that any derivative work of a GPL-licensed code must also have a GPL-compatible license.
Do Linux drivers have to be GPL?
Linux is licensed with the GNU General Public License (GPL), a document devised for the GNU project by the Free Software Foundation. Third-party and custom modules are not part of the Linux kernel, and thus you’re not forced to license them under the GPL.
Where is Linux module H?
The linux/kernel. h header which gets used for module builds is the header which is part of the kernel source. When modules are built in the kernel source tree, that’s the version which is used. For external module builds, the build process looks for the header in /lib/modules/$(uname -r)/build/include/linux/sched.
Where kernel modules are stored?
Loadable kernel modules in Linux are loaded (and unloaded) by the modprobe command. They are located in /lib/modules or /usr/lib/modules and have had the extension . ko (“kernel object”) since version 2.6 (previous versions used the .o extension).
How do I run a kernel module?
The procedure to compile and run a kernel module is as follows:
- Modify the makefile by replacing every occurrence of helloWorld and kernelRead by the names of the modules you wish to create.
- compile the modules by running make in the directory where the modules reside.
- Now become superuser by typing.
What license does Linux use?
the GNU General Public License
Linux is a free, open source operating system, released under the GNU General Public License (GPL). Anyone can run, study, modify, and redistribute the source code, or even sell copies of their modified code, as long as they do so under the same license.
Where is Linux kernel located?
Where is the Linux Kernel located? Since the Linux kernel is a piece of code, it must be stored somewhere on the file-system, such that every time the system reboots, the kernel is loaded in the memory. In Debian/Ubuntu systems, the Linux kernel can be found within the /boot directory.
Is the Linux kernel compatible with the GPL?
It doesn’t replace the Kernel’s license. The license described in the COPYING file applies to the kernel source as a whole, though individual source files can have a different license which is required to be compatible with the GPL-2.0:
What kind of license does the Linux kernel have?
Module is licensed under GPL version 2. This does not express any distinction between GPL-2.0-only or GPL-2.0-or-later. The exact license information can only be determined via the license information in the corresponding source files. Same as “GPL”. It exists for historic reasons.
Do you need license for loadable kernel modules?
Loadable kernel modules also require a MODULE_LICENSE () tag. This tag is neither a replacement for proper source code license information (SPDX-License-Identifier) nor in any way relevant for expressing or determining the exact license under which the source code of the module is provided.
Which is the correct way to express that a module is dual licensed?
The correct way of expressing that the module is dual licensed under a GPL v2 variant or MIT license choice. The module is dual licensed under a GPL v2 variant or BSD license choice. The exact variant of the BSD license can only be determined via the license information in the corresponding source files.