[NET]: Make /proc/net per network namespace
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 <ebiederm@xmission.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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committed by
David S. Miller
parent
07feaebfcc
commit
457c4cbc5a
@ -44,6 +44,7 @@
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#include <linux/sysctl.h>
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#include <linux/init.h>
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#include <linux/spinlock.h>
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#include <net/net_namespace.h>
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#include <net/tcp_states.h>
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#include <net/ip.h>
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#include <net/arp.h>
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@ -1998,9 +1999,9 @@ static int __init ax25_init(void)
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register_netdevice_notifier(&ax25_dev_notifier);
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ax25_register_sysctl();
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proc_net_fops_create("ax25_route", S_IRUGO, &ax25_route_fops);
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proc_net_fops_create("ax25", S_IRUGO, &ax25_info_fops);
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proc_net_fops_create("ax25_calls", S_IRUGO, &ax25_uid_fops);
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proc_net_fops_create(&init_net, "ax25_route", S_IRUGO, &ax25_route_fops);
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proc_net_fops_create(&init_net, "ax25", S_IRUGO, &ax25_info_fops);
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proc_net_fops_create(&init_net, "ax25_calls", S_IRUGO, &ax25_uid_fops);
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out:
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return rc;
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}
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@ -2014,9 +2015,9 @@ MODULE_ALIAS_NETPROTO(PF_AX25);
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static void __exit ax25_exit(void)
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{
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proc_net_remove("ax25_route");
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proc_net_remove("ax25");
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proc_net_remove("ax25_calls");
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proc_net_remove(&init_net, "ax25_route");
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proc_net_remove(&init_net, "ax25");
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proc_net_remove(&init_net, "ax25_calls");
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ax25_rt_free();
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ax25_uid_free();
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ax25_dev_free();
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