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netns: switch ->get()/->put()/->install()/->inum() to working with &net->ns

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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2014-11-01 00:10:50 -04:00
parent 58be28256d
commit ff24870f46
1 changed files with 10 additions and 6 deletions
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16
net/core/net_namespace.c
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@ -347,7 +347,7 @@ struct net *get_net_ns_by_fd(int fd)
ei = get_proc_ns(file_inode(file));
if (ei->ns_ops == &netns_operations)
net = get_net(ei->ns);
net = get_net(container_of(ei->ns, struct net, ns));
else
net = ERR_PTR(-EINVAL);
@ -640,17 +640,22 @@ static void *netns_get(struct task_struct *task)
net = get_net(nsproxy->net_ns);
task_unlock(task);
return net;
return net ? &net->ns : NULL;
}
static inline struct net *to_net_ns(struct ns_common *ns)
{
return container_of(ns, struct net, ns);
}
static void netns_put(void *ns)
{
put_net(ns);
put_net(to_net_ns(ns));
}
static int netns_install(struct nsproxy *nsproxy, void *ns)
{
struct net *net = ns;
struct net *net = to_net_ns(ns);
if (!ns_capable(net->user_ns, CAP_SYS_ADMIN) ||
!ns_capable(current_user_ns(), CAP_SYS_ADMIN))
@ -663,8 +668,7 @@ static int netns_install(struct nsproxy *nsproxy, void *ns)
static unsigned int netns_inum(void *ns)
{
struct net *net = ns;
return net->ns.inum;
return ((struct ns_common *)ns)->inum;
}
const struct proc_ns_operations netns_operations = {