[MESOS-8692] Replace _chsize_s with SetEndOfFile on Windows

• Type: Task
• Status: Resolved
• Priority: Blocker
• Resolution: Fixed
• Fix Version/s: 1.6.0
• Labels: stout windows
• Target Version/s: 1.6.0
• Epic Link: libprocess-iocp
• Assignee: Andrew Schwartzmeyer
• Reporter: Andrew Schwartzmeyer
• Shepherd: Andrew Schwartzmeyer
• Created: 19/Mar/18 21:04
• Updated: 02/May/18 02:14
• Resolved: 02/May/18 02:14

Description

The function os::ftruncate on Windows uses the CRT API _chsize_s which requires an integer file descriptor. We can replace this with the semantically similar if not equivalent logic of SetFilePointer followed by SetEndOfFile. Major different is that it doesn't write null bytes when extending the file; it leaves the data uninitialized.

Issue Links

• blocks: MESOS-8675 Remove FD_CRT from WindowsFD