e413d89aa7
implement better availability probing for copy_file_range Followup to https://github.com/rust-lang/rust/pull/75428#discussion_r469616547 Previously syscall detection was overly pessimistic. Any attempt to copy to an immutable file (EPERM) would disable copy_file_range support for the whole process. The change tries to copy_file_range on invalid file descriptors which will never run into the immutable file case and thus we can clearly distinguish syscall availability. |
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| benches | ||
| src | ||
| tests | ||
| build.rs | ||
| Cargo.toml | ||