Subject: Re: Addition to force open to open only regular files
To: None <email@example.com>
From: Greg A. Woods <firstname.lastname@example.org>
Date: 11/22/2000 12:37:44
[ On Thursday, November 23, 2000 at 02:28:15 (+0900), Noriyuki Soda wrote: ]
> Subject: Re: Addition to force open to open only regular files
> Half-open, open-only-normal-files, fsetuid, open_as are all insufficient,
> because there are system calls other than open(2) which is related to
> user's privilege.
> The saved-uid/gid feature can do what those can do, and can cope with
> system calls other than open(2), too.
Exactly. And that's the problem, not the solution.
Of all the proposals so far open_as() is the only one that provides
sufficient functionality to solve the entire class of problems while at
the same time not making a new set of problems for itself.
Greg A. Woods
+1 416 218-0098 VE3TCP <email@example.com> <robohack!woods>
Planix, Inc. <firstname.lastname@example.org>; Secrets of the Weird <email@example.com>