summaryrefslogtreecommitdiff
diff options
context:
space:
mode:
-rw-r--r--net/core/net_namespace.c49
1 files changed, 27 insertions, 22 deletions
diff --git a/net/core/net_namespace.c b/net/core/net_namespace.c
index b7403ff4d6c..d4cf178bdfc 100644
--- a/net/core/net_namespace.c
+++ b/net/core/net_namespace.c
@@ -316,6 +316,28 @@ void __put_net(struct net *net)
}
EXPORT_SYMBOL_GPL(__put_net);
+struct net *get_net_ns_by_fd(int fd)
+{
+ struct proc_inode *ei;
+ struct file *file;
+ struct net *net;
+
+ net = ERR_PTR(-EINVAL);
+ file = proc_ns_fget(fd);
+ if (!file)
+ goto out;
+
+ ei = PROC_I(file->f_dentry->d_inode);
+ if (ei->ns_ops != &netns_operations)
+ goto out;
+
+ net = get_net(ei->ns);
+out:
+ if (file)
+ fput(file);
+ return net;
+}
+
#else
struct net *copy_net_ns(unsigned long flags, struct net *old_net)
{
@@ -323,6 +345,11 @@ struct net *copy_net_ns(unsigned long flags, struct net *old_net)
return ERR_PTR(-EINVAL);
return old_net;
}
+
+struct net *get_net_ns_by_fd(int fd)
+{
+ return ERR_PTR(-EINVAL);
+}
#endif
struct net *get_net_ns_by_pid(pid_t pid)
@@ -345,28 +372,6 @@ struct net *get_net_ns_by_pid(pid_t pid)
}
EXPORT_SYMBOL_GPL(get_net_ns_by_pid);
-struct net *get_net_ns_by_fd(int fd)
-{
- struct proc_inode *ei;
- struct file *file;
- struct net *net;
-
- net = ERR_PTR(-EINVAL);
- file = proc_ns_fget(fd);
- if (!file)
- goto out;
-
- ei = PROC_I(file->f_dentry->d_inode);
- if (ei->ns_ops != &netns_operations)
- goto out;
-
- net = get_net(ei->ns);
-out:
- if (file)
- fput(file);
- return net;
-}
-
static int __init net_ns_init(void)
{
struct net_generic *ng;