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support enhanced fd-related APIs #365
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api/cffiRelated to the C-FFI API.Related to the C-FFI API.api/handleRelated to the handle API.Related to the handle API.api/rustRelated to the Rust API.Related to the Rust API.impact/featureAn issue or PR that adds new distinct functionality.An issue or PR that adds new distinct functionality.
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api/cffiRelated to the C-FFI API.Related to the C-FFI API.api/handleRelated to the handle API.Related to the handle API.api/rustRelated to the Rust API.Related to the Rust API.impact/featureAn issue or PR that adds new distinct functionality.An issue or PR that adds new distinct functionality.
There are quite a few
*at(2)syscalls which don't work withO_PATHfile descriptors but can be worked around with/proc/self/fd/.... We should probablyThe obvious ones are:
*xattratwere added in 6.13, we will need fallbacks using/proc/self/fd/...(we can't even do the dirfd trick...).fchmodat(2)(AT_EMPTY_PATHsupported since Linux 6.6).fchownat(2)(AT_EMPTY_PATHsupported since Linux 2.6.39, but best to add it for symmetry withfchmodat(2)).