Add the following system calls for UB management:
1. sys_getluid - get current UB id
2. sys_setluid - changes exec_ and fork_ UBs on current
3. sys_setublimit - set limits for resources consumtions
Why not have another system call for getting the current limits?
will add sys_getublimit().
But as I said in previous mail, configfs seems like a better choice for
user interface. That way user has to go to one place to read/write
limits, see the current usage and other stats.
Check another email about interfaces. I have arguments against it :/
Signed-Off-By: Pavel Emelianov <[email protected]>
Signed-Off-By: Kirill Korotaev <[email protected]>
+ * The setbeanlimit syscall
+asmlinkage long sys_setublimit(uid_t uid, unsigned long resource,
+ unsigned long *limits)
+ ub = beancounter_findcreate(uid, NULL, 0);
+ if (ub == NULL)
+ goto out;
+ spin_lock_irqsave(&ub->ub_lock, flags);
+ ub->ub_parms[resource].barrier = new_limits;
+ ub->ub_parms[resource].limit = new_limits;
+ spin_unlock_irqrestore(&ub->ub_lock, flags);
I think there should be a check here for seeing if the new limits are
lower than the current usage of a resource. If so then take appropriate
any idea what exact action to add here?
Looks like can be added when needed, agree?
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
[Index of Archives]
[Video 4 Linux]
[Linux for the blind]