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[NET]: Make /proc/net per network namespace

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This patch makes /proc/net per network namespace.  It modifies the global
variables proc_net and proc_net_stat to be per network namespace.
The proc_net file helpers are modified to take a network namespace argument,
and all of their callers are fixed to pass &init_net for that argument.
This ensures that all of the /proc/net files are only visible and
usable in the initial network namespace until the code behind them
has been updated to be handle multiple network namespaces.

Making /proc/net per namespace is necessary as at least some files
in /proc/net depend upon the set of network devices which is per
network namespace, and even more files in /proc/net have contents
that are relevant to a single network namespace.

Signed-off-by: Eric W. Biederman <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
This commit is contained in:
Eric W. Biederman 2007-09-12 12:01:34 +02:00 • committed by David S. Miller
commit 457c4cbc5a
84 changed files with 342 additions and 261 deletions
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17
net/rose/af_rose.c
View file

@ -26,6 +26,7 @@
#include <linux/sockios.h>
#include <linux/net.h>
#include <linux/stat.h>
#include <net/net_namespace.h>
#include <net/ax25.h>
#include <linux/inet.h>
#include <linux/netdevice.h>
@ -1576,10 +1577,10 @@ static int __init rose_proto_init(void)
rose_add_loopback_neigh();
proc_net_fops_create("rose", S_IRUGO, &rose_info_fops);
proc_net_fops_create("rose_neigh", S_IRUGO, &rose_neigh_fops);
proc_net_fops_create("rose_nodes", S_IRUGO, &rose_nodes_fops);
proc_net_fops_create("rose_routes", S_IRUGO, &rose_routes_fops);
proc_net_fops_create(&init_net, "rose", S_IRUGO, &rose_info_fops);
proc_net_fops_create(&init_net, "rose_neigh", S_IRUGO, &rose_neigh_fops);
proc_net_fops_create(&init_net, "rose_nodes", S_IRUGO, &rose_nodes_fops);
proc_net_fops_create(&init_net, "rose_routes", S_IRUGO, &rose_routes_fops);
out:
return rc;
fail:
@ -1606,10 +1607,10 @@ static void __exit rose_exit(void)
{
int i;
proc_net_remove("rose");
proc_net_remove("rose_neigh");
proc_net_remove("rose_nodes");
proc_net_remove("rose_routes");
proc_net_remove(&init_net, "rose");
proc_net_remove(&init_net, "rose_neigh");
proc_net_remove(&init_net, "rose_nodes");
proc_net_remove(&init_net, "rose_routes");
rose_loopback_clear();
rose_rt_free();