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New AT_ flags for restricting pathname lookup

New AT_ flags for restricting pathname lookup

Posted Oct 5, 2018 17:14 UTC (Fri) by Cyberax (✭ supporter ✭, #52523)
In reply to: New AT_ flags for restricting pathname lookup by nix
Parent article: New AT_ flags for restricting pathname lookup

It's way worse than assembly. With assembly you can typically use debuggers to trace the execution and inspect the environment. Nothing comparable exists for eBPF.

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New AT_ flags for restricting pathname lookup

Posted Oct 5, 2018 22:24 UTC (Fri) by nix (subscriber, #2304) [Link]

Generally I do the same thing when debugging eBPF that I do when debugging other programs: printf()! In the case of eBPF you throw in a helper that does a printk() and chuck in calls to the helper liberally. (This is not so useful if you can't modify the eBPF, mind you.)


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