Re: kern/48910: msync(2) should return ENOMEM on unmapped pages per POSIX; test criteria in t_msync incorrect

[David Holland <dholland-bugs%netbsd.org@localhost>]

The following reply was made to PR kern/48910; it has been noted by GNATS.

From: David Holland <dholland-bugs%netbsd.org@localhost>
To: gnats-bugs%NetBSD.org@localhost
Cc: 
Subject: Re: kern/48910: msync(2) should return ENOMEM on unmapped pages per
 POSIX; test criteria in t_msync incorrect
Date: Wed, 18 Jun 2014 03:05:01 +0000

 On Tue, Jun 17, 2014 at 09:35:00PM +0000, Garrett Cooper wrote:
  >  Looking around that file and then studying the NetBSD/POSIX manpages a
  >  bit, mmap seems suspicious because it relies on the range_check static
  >  function for checking the range of the pages and range_check returns
  >  EFBIG for mmap which isn't documented in mmap(2) for NetBSD (and it's
  >  not in POSIX either). I'm not 100% clued into NetBSD kernel internals
  >  (only FreeBSD) so I need some help here -- does EFBIG get punted back
  >  to userland as EFAULT?
 
 It does not; that sounds broken.
 
 -- 
 David A. Holland
 dholland%netbsd.org@localhost