Messages in this thread |  | | | From | "Ray Bryant" <> | | Subject | Re: [PATCH 4/4] Swap migration V3: sys_migrate_pages interface | | Date | Fri, 21 Oct 2005 11:18:09 -0500 |
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On Friday 21 October 2005 10:47, Christoph Lameter wrote: > On Fri, 21 Oct 2005, Paul Jackson wrote: > > * Christoph - what is the permissions check on sys_migrate_pages()? > > It would seem inappropriate for 'guest' to be able to move the > > memory of 'root'. > > The check is missing. >
That code used to be there. Basically the check was that if you could legally send a signal to the process, you could migrate its memory. Go back and look and my patches for this.
Why was this dropped, arbitrarily?
> Maybe we could add: > > if (!capable(CAP_SYS_RESOURCE)) > return -EPERM; > > Then we may also decide that root can move any process anywhere and drop > the retrieval of the mems_allowed from the other task. > > -- > To unsubscribe, send a message with 'unsubscribe linux-mm' in > the body to majordomo@kvack.org. For more info on Linux MM, > see: http://www.linux-mm.org/ . > Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>
-- Ray Bryant AMD Performance Labs Austin, Tx 512-602-0038 (o) 512-507-7807 (c)
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