On Tue, Jan 17, 2017 at 02:03:29PM +1300, Michael Kerrisk (man-pages) wrote: > + case NS_GET_OWNER_UID: > + if (ns->ops->type != CLONE_NEWUSER) > + return -EINVAL; > + user_ns = container_of(ns, struct user_namespace, ns); > + argp = (unsigned int __user *) arg; > + uid = from_kuid_munged(current_user_ns(), user_ns->owner); > + return put_user(uid, argp); > … > +/* Get owner UID for a user namespace */ > +#define NS_GET_OWNER_UID _IO(NSIO, 0x4) The comment here should probably be: Get owner UID (in the current user namespace) for a user namespace or some such, to convey that current_user_ns is being passed to from_kuid_munged. Cheers, Trevor -- This email may be signed or encrypted with GnuPG (http://www.gnupg.org). For more information, see http://en.wikipedia.org/wiki/Pretty_Good_Privacy
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