X-Git-Url: https://git.kernel.dk/?a=blobdiff_plain;f=include%2Flinux%2Futsname.h;h=11232676bfff59af017b4b3343c67dc430004c4b;hb=32e8b1062915d00d07d3b88a95174648e369b6a3;hp=f8d3b326e93a2f9b8a2f5bc616877a433acfa73a;hpb=31f6e1bd3b58c9a67e5ea0c2d372fbf5fc9e326d;p=linux-block.git

diff --git a/include/linux/utsname.h b/include/linux/utsname.h
index f8d3b326e93a..11232676bfff 100644
--- a/include/linux/utsname.h
+++ b/include/linux/utsname.h
@@ -35,6 +35,7 @@ struct new_utsname {
 #include <linux/sched.h>
 #include <linux/kref.h>
 #include <linux/nsproxy.h>
+#include <linux/err.h>
 #include <asm/atomic.h>
 
 struct uts_namespace {
@@ -43,13 +44,14 @@ struct uts_namespace {
 };
 extern struct uts_namespace init_uts_ns;
 
+#ifdef CONFIG_UTS_NS
 static inline void get_uts_ns(struct uts_namespace *ns)
 {
 	kref_get(&ns->kref);
 }
 
-#ifdef CONFIG_UTS_NS
-extern struct uts_namespace *copy_utsname(int flags, struct uts_namespace *ns);
+extern struct uts_namespace *copy_utsname(unsigned long flags,
+					struct uts_namespace *ns);
 extern void free_uts_ns(struct kref *kref);
 
 static inline void put_uts_ns(struct uts_namespace *ns)
@@ -57,15 +59,22 @@ static inline void put_uts_ns(struct uts_namespace *ns)
 	kref_put(&ns->kref, free_uts_ns);
 }
 #else
-static inline struct uts_namespace *copy_utsname(int flags,
-						struct uts_namespace *ns)
+static inline void get_uts_ns(struct uts_namespace *ns)
 {
-	return ns;
 }
 
 static inline void put_uts_ns(struct uts_namespace *ns)
 {
 }
+
+static inline struct uts_namespace *copy_utsname(unsigned long flags,
+					struct uts_namespace *ns)
+{
+	if (flags & CLONE_NEWUTS)
+		return ERR_PTR(-EINVAL);
+
+	return ns;
+}
 #endif
 
 static inline struct new_utsname *utsname(void)