Re: kern/51595: inconsistent behaviour in statvfs

[Thomas Klausner <wiz%NetBSD.org@localhost>]

The following reply was made to PR kern/51595; it has been noted by GNATS.

From: Thomas Klausner <wiz%NetBSD.org@localhost>
To: gnats-bugs%NetBSD.org@localhost
Cc: 
Subject: Re: kern/51595: inconsistent behaviour in statvfs
Date: Thu, 3 Nov 2016 15:17:26 +0100

 On Thu, Nov 03, 2016 at 02:10:00PM +0000, Christos Zoulas wrote:
 >  Please explain what happens. I.e. what it returns in the error case
 >  and what it should return.
 
 IIUC:
 
 kern/vfs_getcwd.c in getcwd_scandir calls VOP_LOOKUP for ".." to strip
 off the chroot path from paths returned to programs inside the chroot.
 This fails with EACCES, but should succeed.
 
 The reason is that in some cases, this is called with the pbulk user
 credentials and fails, because pbulk cannot enter /archive/sandboxes;
 in some cases it was previously called in another way with root
 credentials, and the call originating from the pbulk user uses the
 cached entry and everything works fine.
 
  Thomas