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Say I want to create an independent, 100% compatible implementation of Linux which can just drop-in to any Linux installation, no matter how it is configured an
by ilovecookiestoo 9y ago
Say I want to create an independent, 100% compatible implementation of Linux which can just drop-in to any Linux installation, no matter how it is configured and have it work?
Where can I download the precise set of requirements for this, so that I don't have to peek at the Linux source code?
What is Linux?
Really, this doesn't make sense.
- kazinator 9y agoGNU/Linux implemented Unix without working with proprietary source code from AT&T. Those people documented their stuff thoroughly and even created international standards. A good many of the Linux system calls and glibc functions are documented by POSIX. That doesn't cover 100%. We can start by looking here: https://www.kernel.org/doc/ https://www.kernel.org/doc/ The Linux man pages project covers system calls: http://man7.org/linux/man-pages/dir_section_2.html http://man7.org/linux/man-pages/dir_section_2.html Many of these don't correspond to anything in POSIX, or not directly, so this documentation is crucial to anyone wanting to replicate Linux. Microsoft seems to have done such a thing: https://en.wikipedia.org/wiki/Windows_Subsystem_for_Linux https://en.wikipedia.org/wiki/Windows_Subsystem_for_Linux "WSL provides a Linux-compatible kernel interface developed by Microsoft (containing no Linux kernel code) [...]" However, in all likelihood, they peeked at Linux code here and there.
- mdekkers 9y agoSay I want to create an independent, 100% compatible implementation of Unix which can just drop-in to work on any X86 processor, no matter how it is configured and have it work? FTFY
- digi_owl 9y agoHow can people drop a comparison between a kernel and a supposed init and not stop and go "wait, what?!". Having a would be second kernel metastasizing in userspace is no a good thing, full stop.
- deleted 9y ago[deleted]