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linux: try to use libc getrandom to allow interposition #78785

Merged
merged 3 commits into from
Nov 18, 2020
Merged

linux: try to use libc getrandom to allow interposition #78785

merged 3 commits into from
Nov 18, 2020

Commits on Nov 16, 2020

  1. linux: try to use libc getrandom to allow interposition 

    We'll try to use a weak `getrandom` symbol first, because that allows
things like `LD_PRELOAD` interposition. For example, perf measurements
might want to disable randomness to get reproducible results. If the
weak symbol is not found, we fall back to a raw `SYS_getrandom` call.
    @cuviper
    cuviper committed Nov 16, 2020
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  2. Try weak symbols for all linux syscall! wrappers

    @cuviper
    cuviper committed Nov 16, 2020
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  3. Use syscall! for copy_file_range too

    @cuviper
    cuviper committed Nov 16, 2020
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