[ARROW-15896] [C++] Add errno detail to filesystem-raised errors

• Type: Wish
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: 8.0.0
• Component/s: C++, Python
• Labels: good-second-issue pull-request-available
• External issue URL: https://github.com/apache/arrow/issues/31326
• Assignee: Antoine Pitrou
• Reporter: Antoine Pitrou
• Created: 10/Mar/22 08:54
• Updated: 11/Jan/23 11:40
• Resolved: 16/Mar/22 13:21

Description

Adding a conventional errno detail to filesystem-raised errors would allow the Python side to raise the proper subexception, such as FileNotFoundError for a non-existent path error (currently, a generic OSError is raised in Python).

Issue Links

• links to: GitHub Pull Request #12626