Issue #10181 has been updated by Technorama Ltd..


The proposed Dir api must provide a way to open both files and directories in order to be useful.

New proposal:

d1 = Dir.open('d1') => aDir
d2 = d1.open('subdir') => aDir relative to d1
file = d1.open_file('file') => aFile relative to d2

I plan on handling all other *at functions in a gem so that all ruby implementations can share the same implementation.  The only methods that must be included in mri are dir.open and dir.open_file due to limitations of the c api.


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Feature #10181: New method File.openat()
https://bugs.ruby-lang.org/issues/10181#change-48636

* Author: Technorama Ltd.
* Status: Open
* Priority: Normal
* Assignee: 
* Category: 
* Target version: 
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The purpose of the openat() function is to enable opening files in directories other than the current working directory without exposure to race conditions. Any part of the path of a file could be changed in parallel to a call to open(), resulting in unspecified behavior. By opening a file descriptor for the target directory and using the openat() function it can be guaranteed that the opened file is located relative to the desired directory.

openat() is part of POSIX.1-2008.

Compatibility:
  Linux kernel >= 2.6.16
  FreeBSD >= 7.0
  OpenBSD >= 5.0
  NetBSD >= 6.1.4
  MacOS/X no

Pull request: https://github.com/ruby/ruby/pull/706



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