Unix-specific extensions to general I/O primitives
| AsRawFd | 
Unix A trait to extract the raw unix file descriptor from an underlying object.  | 
| FromRawFd | 
Unix A trait to express the ability to construct an object from a raw file descriptor.  | 
| IntoRawFd | 
Unix A trait to express the ability to consume an object and acquire ownership of its raw file descriptor.  | 
| RawFd | 
Unix Raw file descriptors.  | 
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Licensed under the Apache License, Version 2.0 or the MIT license, at your option.
    https://doc.rust-lang.org/std/os/unix/io/index.html