[PATCH] afs: proc cells and rootcell are writeable

Ingo Molnar mingo at kernel.org
Sun Jan 26 15:22:57 EST 2014


* Ingo Molnar <mingo at kernel.org> wrote:

> Perhaps we could also generate the most common variants as:
> 
>  #define PERM__rw_r__r__		0644
>  #define PERM__r________		0400
>  #define PERM__r__r__r__		0444
>  #define PERM__r_xr_xr_x		0555
> 
> etc.
> 
> or something similar, more or less matching the output of 'ls -l'?
> 
> That would also make security bugs in this area apparent at first 
> sight. The number of people who can recognize during review that 
> PERM_rw__w__w is probably unwise is probably two orders of magnitude 
> than those who can interpret octal 0622 at a glance.
 ^--higher

Thanks,

	Ingo



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