Re: [1/1][PATCH] nproc v2: netlink access to /proc information

Stephen Smalley
2004-09-09T11:57:41Z

On Wed, 2004-09-08 at 14:41, Roger Luethi wrote:
> A few notes:
> - Access control can be implemented easily. Right now it would be bloat,
> though -- the vast majority of fields in /proc are world-readable
> (/proc/pid/environ being the notable exception).

They aren't world readable when using a security module like SELinux;
they are then typically only accessible by processes in the same
security domain, aside from processes in privileged domains.
security_task_to_inode() hook sets the security attributes on the
/proc/pid inodes based on their security context, and then
security_inode_permission() hook controls access to them. So you need
at least comparable controls.

--
Stephen Smalley <sds@epoch.ncsc.mil>
National Security Agency