Add pipe interposition exploit via dup2#36
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nataliakokoromyti wants to merge 2 commits intogpu-mode:masterfrom
Open
Add pipe interposition exploit via dup2#36nataliakokoromyti wants to merge 2 commits intogpu-mode:masterfrom
nataliakokoromyti wants to merge 2 commits intogpu-mode:masterfrom
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Uses dup2() to reroute the output pipe fd through a background filter thread that rewrites timing values. The original fd number is preserved but now points to a new pipe, while the filter thread reads from it and writes modified data to the saved original fd.
Updated class description and defense strategy in comments.
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to change timing results by rerouting through a background filter there's also a way to do it using dup2() as in the example below. instead of having to modify the FILE struct as in the previous PR, we can just call dup2() and os.pipe() to swap the fd out.