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net: move and export get_net_ns_by_pid

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The function get_net_ns_by_pid(), to get a network
namespace from a pid_t, will be required in cfg80211
as well. Therefore, let's move it to net_namespace.c
and export it. We can't make it a static inline in
the !NETNS case because it needs to verify that the
given pid even exists (and return -ESRCH).

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Johannes Berg 2009-07-10 09:51:35 +00:00 • committed by David S. Miller
parent 134e63756d
commit 30ffee8480
3 changed files with 24 additions and 20 deletions
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include/net/net_namespace.h
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@ -108,6 +108,8 @@ static inline struct net *copy_net_ns(unsigned long flags, struct net *net_ns)
extern struct list_head net_namespace_list;
extern struct net *get_net_ns_by_pid(pid_t pid);
#ifdef CONFIG_NET_NS
extern void __put_net(struct net *net);