Hello, For the past few days, I have been trying to assess support for Linux system calls on a NetBSD system. I am using Linux Test Project for identifying system calls that are yet to be emulated on NetBSD. I have setup QEMU with GENERIC kernel for testing purpose (Thanks iMil for helping me out!) with COMPAT_LINUX option enabled.
I have following particular questions: 1. I wish to emulate support for pidfd_* family of system calls, open_tree, openat2, clone3. I believe they still lack emulation support. Where should I look to identify the possible mappings for these system calls in NetBSD kernel? 2. I found around 40 system calls that currently lack emulation support. Most of them are the system calls that aren't popular or are more relevant to Linux kernel. Only some of the newer system calls seem more likely to be able to be mapped directly to NetBSD system calls. Is it expected to actually implement some of them in NetBSD kernel and then add them to compat layer as part of this project? Also, what's the state of splice and sendfile system calls? I can see that they have been implemented as part of GSoC 2022 but the test cases relating to them still can't find these system calls. 1. With respect to system calls relating to scheduler, I get error relating to not finding some particular files in proc directory. I have set up proc as mentioned in documentation but I still get these errors when I run schedular related system calls. Does proc need to be configured in different way or do schedular related system calls actually lack emulation support? I would also like to thank Theodore for helping me understand the work he did last year. Thanking you, Shivraj
