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Until now, Genode's Linux system call bindings were based on original Unix system calls that were later superseded by more flexibile variants. E.g., 'openat' is a modern version of 'open'. Even though Linux upholds the compatiblity with the original versions for existing architectures like x86, the legacy syscalls are absent for the recently added AARCH64 architecture. A good overview of the system calls accross the prominent architectures can be found at https://chromium.googlesource.com/chromiumos/docs/+/master/constants/syscalls.md This patch updates Genode's syscall bindings to avoid legacy versions, thereby easing the support for AARCH64. The used "modern" versions were introduced back in Linux version 2 days. So we are fine to rely on them. The patch slightly changes the signature for lx_stat because this system call is merely used to check for the existance of a file and its size. The new name 'lx_stat_size' draws a closer connection to its use case. That said, the stat syscall has not been updated to the modern statx since statx is still a fairly recent addition. Issue #4136 |
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This repository contains the Linux-specific implementation of Genode.