procfs: minor hardening #19
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By operating on the magic-link directly, we (in theory) should be safe against a racing mount even when using unsafeHostProcRoot(). There's not much we can do about Reopen, but at least the core lookup logic should be safe against race attacks. Signed-off-by: Aleksa Sarai <cyphar@cyphar.com>
This should lower the chance of checking the wrong paths if we ever rework this code (though our tests do catch bugs here). Signed-off-by: Aleksa Sarai <cyphar@cyphar.com>
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Fixes #18
Signed-off-by: Aleksa Sarai cyphar@cyphar.com