tcp: add tcp_min_snd_mss sysctl

[pandora-kernel.git] / ipc / namespace.c

diff --git a/ipc/namespace.c b/ipc/namespace.c
index 8054c8e..ce0a647 100644 (file)
--- a/ipc/namespace.c
+++ b/ipc/namespace.c
@@ -12,6 +12,7 @@
 #include <linux/fs.h>
 #include <linux/mount.h>
 #include <linux/user_namespace.h>
+#include <linux/proc_fs.h>
 
 #include "util.h"
 
@@ -140,3 +141,39 @@ void put_ipc_ns(struct ipc_namespace *ns)
                free_ipc_ns(ns);
        }
 }
+
+static void *ipcns_get(struct task_struct *task)
+{
+       struct ipc_namespace *ns = NULL;
+       struct nsproxy *nsproxy;
+
+       rcu_read_lock();
+       nsproxy = task_nsproxy(task);
+       if (nsproxy)
+               ns = get_ipc_ns(nsproxy->ipc_ns);
+       rcu_read_unlock();
+
+       return ns;
+}
+
+static void ipcns_put(void *ns)
+{
+       return put_ipc_ns(ns);
+}
+
+static int ipcns_install(struct nsproxy *nsproxy, void *ns)
+{
+       /* Ditch state from the old ipc namespace */
+       exit_sem(current);
+       put_ipc_ns(nsproxy->ipc_ns);
+       nsproxy->ipc_ns = get_ipc_ns(ns);
+       return 0;
+}
+
+const struct proc_ns_operations ipcns_operations = {
+       .name           = "ipc",
+       .type           = CLONE_NEWIPC,
+       .get            = ipcns_get,
+       .put            = ipcns_put,
+       .install        = ipcns_install,
+};