xnu-6153.61.1.tar.gz

[apple/xnu.git] / bsd / miscfs / nullfs / nullfs.h

diff --git a/bsd/miscfs/nullfs/nullfs.h b/bsd/miscfs/nullfs/nullfs.h
index 5d55e2c8b5ee04ed32f2a39d033ea375b7b55fb1..38b55fd53cb71c401306c5bbccafc675ce0356b7 100644 (file)
--- a/bsd/miscfs/nullfs/nullfs.h
+++ b/bsd/miscfs/nullfs/nullfs.h
@@ -88,13 +88,13 @@ typedef int (*vop_t)(void *);
 struct null_mount {
        struct vnode * nullm_rootvp;       /* Reference to root null_node (inode 1) */
        struct vnode * nullm_secondvp;     /* Reference to virtual directory vnode to wrap app
-                                             bundles (inode 2) */
+                                           *  bundles (inode 2) */
        struct vnode * nullm_thirdcovervp; /* Reference to vnode that covers
-                                             lowerrootvp  (inode 3) */
+                                           *  lowerrootvp  (inode 3) */
        struct vnode * nullm_lowerrootvp;  /* reference to the root of the tree we are
-                                             relocating (in the other file system) */
+                                          *  relocating (in the other file system) */
        uint32_t nullm_lowerrootvid;       /* store the lower root vid so we can check
-                                             before we build the shadow vnode lazily*/
+                                           *  before we build the shadow vnode lazily*/
        lck_mtx_t nullm_lock;              /* lock to protect vps above */
        uint64_t nullm_flags;
 };
@@ -111,7 +111,7 @@ struct null_node {
        struct vnode * null_lowervp;     /* VREFed once */
        struct vnode * null_vnode;       /* Back pointer */
        uint32_t null_lowervid;          /* vid for lowervp to detect lowervp getting recycled out
-                                           from under us */
+                                         *  from under us */
        uint32_t null_myvid;
        uint32_t null_flags;
 };
@@ -136,23 +136,22 @@ int nullfs_init_lck(lck_mtx_t * lck);
 int nullfs_destroy_lck(lck_mtx_t * lck);
 int nullfs_uninit(void);
 int null_nodeget(
-    struct mount * mp, struct vnode * lowervp, struct vnode * dvp, struct vnode ** vpp, struct componentname * cnp, int root);
+       struct mount * mp, struct vnode * lowervp, struct vnode * dvp, struct vnode ** vpp, struct componentname * cnp, int root);
 int null_hashget(struct mount * mp, struct vnode * lowervp, struct vnode ** vpp);
 int null_getnewvnode(
-    struct mount * mp, struct vnode * lowervp, struct vnode * dvp, struct vnode ** vpp, struct componentname * cnp, int root);
+       struct mount * mp, struct vnode * lowervp, struct vnode * dvp, struct vnode ** vpp, struct componentname * cnp, int root);
 void null_hashrem(struct null_node * xp);
 
+int nullfs_getbackingvnode(vnode_t in_vp, vnode_t* out_vpp);
+
 #define NULLVPTOLOWERVP(vp) (VTONULL(vp)->null_lowervp)
 #define NULLVPTOLOWERVID(vp) (VTONULL(vp)->null_lowervid)
 #define NULLVPTOMYVID(vp) (VTONULL(vp)->null_myvid)
 
-extern struct vnodeopv_desc nullfs_vnodeop_opv_desc;
+extern const struct vnodeopv_desc nullfs_vnodeop_opv_desc;
 
 extern vop_t * nullfs_vnodeop_p;
 
-// int     nullfs_install_filesys(void);
-// int     nullfs_uninstall_filesys(void);
-
 __END_DECLS
 
 #ifdef NULLFS_DEBUG
@@ -163,4 +162,4 @@ __END_DECLS
 
 #endif /* KERNEL */
 
-#endif
\ No newline at end of file
+#endif