int cap, int audit)
{
for (;;) {
- /* The creator of the user namespace has all caps. */
- if (targ_ns != &init_user_ns && targ_ns->creator == cred->user)
+ /* The owner of the user namespace has all caps. */
+ if (targ_ns != &init_user_ns && uid_eq(targ_ns->owner,
+ make_kuid(cred->user_ns, cred->euid)))
return 0;
/* Do we have the necessary capabilities? */
- if (targ_ns == cred->user->user_ns)
+ if (targ_ns == cred->user_ns)
return cap_raised(cred->cap_effective, cap) ? 0 : -EPERM;
/* Have we tried all of the parent namespaces? */
*If you have a capability in a parent user ns, then you have
* it over all children user namespaces as well.
*/
- targ_ns = targ_ns->creator->user_ns;
+ targ_ns = targ_ns->parent;
}
/* We never get here */
rcu_read_lock();
cred = current_cred();
child_cred = __task_cred(child);
- if (cred->user->user_ns == child_cred->user->user_ns &&
+ if (cred->user_ns == child_cred->user_ns &&
cap_issubset(child_cred->cap_permitted, cred->cap_permitted))
goto out;
- if (ns_capable(child_cred->user->user_ns, CAP_SYS_PTRACE))
+ if (ns_capable(child_cred->user_ns, CAP_SYS_PTRACE))
goto out;
ret = -EPERM;
out:
rcu_read_lock();
cred = __task_cred(parent);
child_cred = current_cred();
- if (cred->user->user_ns == child_cred->user->user_ns &&
+ if (cred->user_ns == child_cred->user_ns &&
cap_issubset(child_cred->cap_permitted, cred->cap_permitted))
goto out;
- if (has_ns_capability(parent, child_cred->user->user_ns, CAP_SYS_PTRACE))
+ if (has_ns_capability(parent, child_cred->user_ns, CAP_SYS_PTRACE))
goto out;
ret = -EPERM;
out:
/* they are so limited unless the current task has the CAP_SETPCAP
* capability
*/
- if (cap_capable(current_cred(), current_cred()->user->user_ns,
+ if (cap_capable(current_cred(), current_cred()->user_ns,
CAP_SETPCAP, SECURITY_CAP_AUDIT) == 0)
return 0;
return 1;
|| ((new->securebits & SECURE_ALL_LOCKS & ~arg2)) /*[2]*/
|| (arg2 & ~(SECURE_ALL_LOCKS | SECURE_ALL_BITS)) /*[3]*/
|| (cap_capable(current_cred(),
- current_cred()->user->user_ns, CAP_SETPCAP,
+ current_cred()->user_ns, CAP_SETPCAP,
SECURITY_CAP_AUDIT) != 0) /*[4]*/
/*
* [1] no changing of bits that are locked