sysctl: prepare core tables to point to netns variables
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PATCH 2/3 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.
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net/core/sysctl_net_core.c +7 -2
@@ -167,8 +167,13 @@ static __net_init int sysctl_core_net_init(struct net *net)if (tbl ==NULL ) goto err_dup; -for (tmp = tbl; tmp->procname; tmp++) - tmp->mode &= ~0222 ; +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,
Signature · 1 line
1.5.3.4
From: Pavel Emelyanov <[email protected]>
Date: Fri, 07 Dec 2007 16:10:49 +0300
Quoted 4 lines
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.
Quoted 8 lines
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 <[email protected]>
Applied, but please see if you can find a more pretty way to do this, thanks.