Re: How much of a mess does OpenVZ make? ;) Was: What can OpenVZ do?

quoted

1. cap_sys_admin check is unfortunate.  In discussions about Oren's
patchset we've agreed that not having that check from the outset forces
us to consider security with each new patch and feature, which is a good
thing.

Removing CAP_SYS_ADMIN on restore?

we've kept the capabilities in our patchset but the user tools doing checkpoint
and restart are setcap'ed appropriately to be able to do different things like : 
	
	clone() the namespaces
	mount /dev/mqueue
	interact with net_ns
	etc.

at restart, the task are restarted through execve() so they loose their 
capabilities automatically.

but I think we could drop the CAP_SYS_ADMIN tests for some namespaces,
uts and ipc are good candidates. I guess network should require some 
privilege.  

C.  

--
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>