sh: syscall audit support.

[safe/jmp/linux-2.6] / include / linux / pid_namespace.h

diff --git a/include/linux/pid_namespace.h b/include/linux/pid_namespace.h
index 416d4e4..1689e28 100644 (file)
--- a/include/linux/pid_namespace.h
+++ b/include/linux/pid_namespace.h
@@ -4,7 +4,6 @@
 #include <linux/sched.h>
 #include <linux/mm.h>
 #include <linux/threads.h>
-#include <linux/pid.h>
 #include <linux/nsproxy.h>
 #include <linux/kref.h>
 
@@ -30,9 +29,11 @@ struct pid_namespace {
 
 extern struct pid_namespace init_pid_ns;
 
+#ifdef CONFIG_PID_NS
 static inline struct pid_namespace *get_pid_ns(struct pid_namespace *ns)
 {
-       kref_get(&ns->kref);
+       if (ns != &init_pid_ns)
+               kref_get(&ns->kref);
        return ns;
 }
 
@@ -41,9 +42,32 @@ extern void free_pid_ns(struct kref *kref);
 
 static inline void put_pid_ns(struct pid_namespace *ns)
 {
-       kref_put(&ns->kref, free_pid_ns);
+       if (ns != &init_pid_ns)
+               kref_put(&ns->kref, free_pid_ns);
 }
 
+#else /* !CONFIG_PID_NS */
+#include <linux/err.h>
+
+static inline struct pid_namespace *get_pid_ns(struct pid_namespace *ns)
+{
+       return ns;
+}
+
+static inline struct pid_namespace *
+copy_pid_ns(unsigned long flags, struct pid_namespace *ns)
+{
+       if (flags & CLONE_NEWPID)
+               ns = ERR_PTR(-EINVAL);
+       return ns;
+}
+
+static inline void put_pid_ns(struct pid_namespace *ns)
+{
+}
+
+#endif /* CONFIG_PID_NS */
+
 static inline struct pid_namespace *task_active_pid_ns(struct task_struct *tsk)
 {
        return tsk->nsproxy->pid_ns;
@@ -51,7 +75,8 @@ static inline struct pid_namespace *task_active_pid_ns(struct task_struct *tsk)
 
 static inline struct task_struct *task_child_reaper(struct task_struct *tsk)
 {
-       return init_pid_ns.child_reaper;
+       BUG_ON(tsk != current);
+       return tsk->nsproxy->pid_ns->child_reaper;
 }
 
 #endif /* _LINUX_PID_NS_H */