Merge tag 'nfs-for-4.2-2' of git://git.linux-nfs.org/projects/trondmy/linux-nfs

[linux-drm-fsl-dcu.git] / fs / nfs / internal.h

diff --git a/fs/nfs/internal.h b/fs/nfs/internal.h
index 7e3c4604bea8a6e6e92906b6c2096adb6df5ca3f..9b372b845f6a6ff06a4a035e2f6799d7d29cd8f7 100644 (file)
--- a/fs/nfs/internal.h
+++ b/fs/nfs/internal.h
@@ -296,6 +296,22 @@ extern struct rpc_procinfo nfs4_procedures[];
 
 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
 extern struct nfs4_label *nfs4_label_alloc(struct nfs_server *server, gfp_t flags);
+static inline struct nfs4_label *
+nfs4_label_copy(struct nfs4_label *dst, struct nfs4_label *src)
+{
+       if (!dst || !src)
+               return NULL;
+
+       if (src->len > NFS4_MAXLABELLEN)
+               return NULL;
+
+       dst->lfs = src->lfs;
+       dst->pi = src->pi;
+       dst->len = src->len;
+       memcpy(dst->label, src->label, src->len);
+
+       return dst;
+}
 static inline void nfs4_label_free(struct nfs4_label *label)
 {
        if (label) {
@@ -316,6 +332,11 @@ static inline void nfs4_label_free(void *label) {}
 static inline void nfs_zap_label_cache_locked(struct nfs_inode *nfsi)
 {
 }
+static inline struct nfs4_label *
+nfs4_label_copy(struct nfs4_label *dst, struct nfs4_label *src)
+{
+       return NULL;
+}
 #endif /* CONFIG_NFS_V4_SECURITY_LABEL */
 
 /* proc.c */