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A comment on A Kernel Hacker Meets Fuchsia OS. Parent comment

Re:A Kernel Hacker Meets Fuchsia OS by trasz on Wednesday May 25, 2022 @12:14PM (#31506602)
>File systems aren't actually capability based (generally, in practice) because you can 'ls' and 'cd ../'. Otherwise they could be.

That's precisely how it works in FreeBSD (https://www.freebsd.org/cgi/man.cgi?capsicum).

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Re:A Kernel Hacker Meets Fuchsia OS by staticassertion on Wednesday May 25, 2022 @03:01PM (#31509016)
"generally, in practice"

There's also openat on linux. My point is that the general, practiced approach is not capability based.

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Re:A Kernel Hacker Meets Fuchsia OS by trasz on Thursday May 26, 2022 @03:19AM (#31515629)
It it’s not capability based, because Linux doesn’t provide necessary functionality. FreeBSD does, as explained in the man page I’ve linked to.
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