Eric W. Biederman wrote:
Pavel Emelyanov <xemul@xxxxxxxxxxxxx> writes:
Yet another set of per-namespace IDs along with CLONE_NEWXXX ones?
I currently have a way to create all namespaces we have with one
syscall. Why don't we have an ability to enter them all with one syscall?
The CLONE_NEWXXX series of bits has been an royal pain to work with,
and it appears to be unnecessary complications for no gain.
That's the answer for the "Yet another set..." question.
How about the "Why don't we have..." one?
I am not certain which question you are asking:
Why don't we have an ability to enter all namespaces with one syscall
invocation?
That's how I understood the question, and I, too, wonder why not ?
By the way, an alternative to using bitmap is to change the prototype
of setns() to accept an array of FD's:
int setns(int *fds, int nfds);
So the process will atomically enter all the namespaces as specified
by the FDs.
Oren.
Why don't we have a syscall that allows us to enter every namespace?
Eric
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