faccessat2() and getxattr() syscall support missing

• On Kernels >5.8 faccessat2() is used to check permissions and replaces faccessat. Therefore, commands such as rm fail.
• some file systems also use getxattr() for each entry during ls -l which causes the following output:

❯ gkfs ls -l /tmp/gkfs_mountdir/
ls: /tmp/gkfs_mountdir/largefile: No such file or directory
ls: /tmp/gkfs_mountdir/testfile: No such file or directory
total 0
-rw-r--r-- 1 evie evie 734003200 Jan  1  1970 largefile
-rw-rw-rw- 1 evie evie         0 Jan  1  1970 testfile