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os: os.Root: use openat2 with RESOLVE_BENEATH on Linux #73077

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neild opened this issue Mar 27, 2025 · 1 comment
Open

os: os.Root: use openat2 with RESOLVE_BENEATH on Linux #73077

neild opened this issue Mar 27, 2025 · 1 comment
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LibraryProposal Issues describing a requested change to the Go standard library or x/ libraries, but not to a tool NeedsFix The path to resolution is known, but the work has not been done. OS-Linux Performance

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@neild
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neild commented Mar 27, 2025

Linux's openat2 syscall with the RESOLVE_BENEATH flag opens a file within some root directory. We should use it when available.

openat2 is only supported since Linux 5.6, so we'll still need a fallback on older versions.
@gabyhelp
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@gabyhelp gabyhelp mentioned this issue Mar 27, 2025
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@gabyhelp gabyhelp added the LibraryProposal Issues describing a requested change to the Go standard library or x/ libraries, but not to a tool label Mar 27, 2025
@dmitshur dmitshur added Performance OS-Linux NeedsFix The path to resolution is known, but the work has not been done. labels Mar 28, 2025
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