Commits on Sep 4, 2018

1. new dir module …

   This is a lower-level interface than `std::fs::ReadDir`. Notable differences:
   
      * can be opened from a file descriptor (as returned by `openat`, perhaps
        before knowing if the path represents a file or directory). Uses
        `fdopendir` for this, available on all Unix platforms as of
        rust-lang/libc#1018.
   
      * implements `AsRawFd`, so it can be passed to `fstat`, `openat`, etc.
   
      * can be iterated through multiple times without closing and reopening the
        file descriptor. Each iteration rewinds when finished.
   
      * returns entries for `.` (current directory) and `..` (parent directory).
   
      * returns entries' names as a `CStr` (no allocation or conversion beyond
        whatever libc does).

   

   scottlamb committed Sep 4, 2018
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