Commit 790a3532 authored Dec 08, 2007 by Pavel Emelyanov Committed by David S. Miller Jan 28, 2008

[NET] sysctl: prepare core tables to point to netns variables



Some of ctl variables are going to be on the struct
net. Here's the way to adjust the ->data pointer on the
ctl_table-s to point on the right variable.

Since some pointers still point on the global variables,
I keep turning the write bits off on such tables.

This looks to become a common procedure for net sysctls,
so later parts of this code may migrate to some more
generic place.

Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

parent 024626e3

net/core/sysctl_net_core.c

+7 −2

Original line number	Diff line number	Diff line
		@@ -167,9 +167,14 @@ static __net_init int sysctl_core_net_init(struct net *net)
		if (tbl == NULL)
		goto err_dup;

		for (tmp = tbl; tmp->procname; tmp++)
		for (tmp = tbl; tmp->procname; tmp++) {
		if (tmp->data >= (void *)&init_net &&
		tmp->data < (void *)(&init_net + 1))
		tmp->data += (char )net - (char )&init_net;
		else
		tmp->mode &= ~0222;
		}
		}

		net->sysctl_core_hdr = register_net_sysctl_table(net,
		net_core_path, tbl);