xnu-2050.22.13.tar.gz

[apple/xnu.git] / bsd / sys / vnode_internal.h

diff --git a/bsd/sys/vnode_internal.h b/bsd/sys/vnode_internal.h
index dbff3a50dd187407d363acdbd27617052555f9a7..e846ac6799e6958482d15222a90947111f56ec98 100644 (file)
--- a/bsd/sys/vnode_internal.h
+++ b/bsd/sys/vnode_internal.h
@@ -1,5 +1,5 @@
 /*
 /*

- * Copyright (c) 2000-2008 Apple Inc. All rights reserved.
+ * Copyright (c) 2000-2012 Apple Inc. All rights reserved.

  *
  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
  * 
  *
  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
  * 


@@ -93,12 +93,36 @@ struct label;
 
 LIST_HEAD(buflists, buf);
 
 
 LIST_HEAD(buflists, buf);
 

-
+#if CONFIG_VFS_FUNNEL

 struct unsafe_fsnode {
        lck_mtx_t fsnodelock;
        int32_t   fsnode_count;
        void *    fsnodeowner;
 };
 struct unsafe_fsnode {
        lck_mtx_t fsnodelock;
        int32_t   fsnode_count;
        void *    fsnodeowner;
 };

+#endif /* CONFIG_VFS_FUNNEL */
+
+#if CONFIG_TRIGGERS
+/*
+ * VFS Internal (private) trigger vnode resolver info.
+ */
+struct vnode_resolve {
+       lck_mtx_t                               vr_lock;   /* protects vnode_resolve_t fields */
+       trigger_vnode_resolve_callback_t        vr_resolve_func;
+       trigger_vnode_unresolve_callback_t      vr_unresolve_func;
+       trigger_vnode_rearm_callback_t          vr_rearm_func;
+       trigger_vnode_reclaim_callback_t        vr_reclaim_func;
+       void *                                  vr_data;   /* private data for resolver */
+       uint32_t                                vr_flags;
+       uint32_t                                vr_lastseq;
+};
+typedef struct vnode_resolve *vnode_resolve_t;
+
+/* private vr_flags */
+#define VNT_RESOLVED        (1UL << 31)
+#define VNT_VFS_UNMOUNTED   (1UL << 30)
+#define VNT_EXTERNAL       (1UL << 29)
+
+#endif /* CONFIG_TRIGGERS */

 
 /*
  * Reading or writing any of these items requires holding the appropriate lock.
 
 /*
  * Reading or writing any of these items requires holding the appropriate lock.


@@ -154,18 +178,23 @@ struct vnode {
        const char *v_name;                     /* name component of the vnode */
        vnode_t v_parent;                       /* pointer to parent vnode */
        struct lockf    *v_lockf;               /* advisory lock list head */
        const char *v_name;                     /* name component of the vnode */
        vnode_t v_parent;                       /* pointer to parent vnode */
        struct lockf    *v_lockf;               /* advisory lock list head */

-#ifndef __LP64__
+#if CONFIG_VFS_FUNNEL

         struct unsafe_fsnode *v_unsafefs;      /* pointer to struct used to lock */
 #else 
        int32_t         v_reserved1;
         struct unsafe_fsnode *v_unsafefs;      /* pointer to struct used to lock */
 #else 
        int32_t         v_reserved1;

+#ifdef __LP64__

        int32_t         v_reserved2;
        int32_t         v_reserved2;

-#endif /* __LP64__ */
+#endif
+#endif /* CONFIG_VFS_FUNNEL */

        int     (**v_op)(void *);               /* vnode operations vector */
        mount_t v_mount;                        /* ptr to vfs we are in */
        void *  v_data;                         /* private data for fs */
 #if CONFIG_MACF
        struct label *v_label;                  /* MAC security label */
 #endif
        int     (**v_op)(void *);               /* vnode operations vector */
        mount_t v_mount;                        /* ptr to vfs we are in */
        void *  v_data;                         /* private data for fs */
 #if CONFIG_MACF
        struct label *v_label;                  /* MAC security label */
 #endif

+#if CONFIG_TRIGGERS
+       vnode_resolve_t v_resolve;              /* trigger vnode resolve info (VDIR only) */
+#endif /* CONFIG_TRIGGERS */

 };
 
 #define        v_mountedhere   v_un.vu_mountedhere
 };
 
 #define        v_mountedhere   v_un.vu_mountedhere


@@ -187,8 +216,9 @@ struct vnode {
 /*
  * v_listflag
  */
 /*
  * v_listflag
  */

-#define VLIST_RAGE    0x01            /* vnode is currently in the rapid age list */
-#define VLIST_DEAD    0x02            /* vnode is currently in the dead list */
+#define VLIST_RAGE               0x01          /* vnode is currently in the rapid age list */
+#define VLIST_DEAD               0x02          /* vnode is currently in the dead list */
+#define VLIST_ASYNC_WORK         0x04          /* vnode is currently on the deferred async work queue */

 
 /*
  * v_lflags
 
 /*
  * v_lflags


@@ -199,7 +229,6 @@ struct vnode {
 #define        VL_TERMWANT     0x0008          /* there's a waiter  for recycle finish (vnode_getiocount)*/
 #define        VL_DEAD         0x0010          /* vnode is dead, cleaned of filesystem-specific info */
 #define        VL_MARKTERM     0x0020          /* vnode should be recycled when no longer referenced */
 #define        VL_TERMWANT     0x0008          /* there's a waiter  for recycle finish (vnode_getiocount)*/
 #define        VL_DEAD         0x0010          /* vnode is dead, cleaned of filesystem-specific info */
 #define        VL_MARKTERM     0x0020          /* vnode should be recycled when no longer referenced */

-#define        VL_MOUNTDEAD    0x0040          /* v_moutnedhere is dead   */

 #define VL_NEEDINACTIVE        0x0080          /* delay VNOP_INACTIVE until iocount goes to 0 */
 
 #define        VL_LABEL        0x0100          /* vnode is marked for labeling */
 #define VL_NEEDINACTIVE        0x0080          /* delay VNOP_INACTIVE until iocount goes to 0 */
 
 #define        VL_LABEL        0x0100          /* vnode is marked for labeling */


@@ -224,7 +253,7 @@ struct vnode {
 #define VDEVFLUSH      0x000040        /* device vnode after vflush */
 #define        VMOUNT          0x000080        /* mount operation in progress */
 #define        VBWAIT          0x000100        /* waiting for output to complete */
 #define VDEVFLUSH      0x000040        /* device vnode after vflush */
 #define        VMOUNT          0x000080        /* mount operation in progress */
 #define        VBWAIT          0x000100        /* waiting for output to complete */

-                                       /* Free slot here after removing VALIASED for radar #5971707 */
+#define VSHARED_DYLD   0x000200        /* vnode is a dyld shared cache file */

 #define        VNOCACHE_DATA   0x000400        /* don't keep data cached once it's been consumed */
 #define        VSTANDARD       0x000800        /* vnode obtained from common pool */
 #define        VAGE            0x001000        /* Insert vnode at head of free list */
 #define        VNOCACHE_DATA   0x000400        /* don't keep data cached once it's been consumed */
 #define        VSTANDARD       0x000800        /* vnode obtained from common pool */
 #define        VAGE            0x001000        /* Insert vnode at head of free list */


@@ -244,6 +273,7 @@ struct vnode {
 #define        VISNAMEDSTREAM  0x400000        /* vnode is a named stream (eg HFS resource fork) */
 #endif
 #define VOPENEVT        0x800000        /* if process is P_CHECKOPENEVT, then or in the O_EVTONLY flag on open */
 #define        VISNAMEDSTREAM  0x400000        /* vnode is a named stream (eg HFS resource fork) */
 #endif
 #define VOPENEVT        0x800000        /* if process is P_CHECKOPENEVT, then or in the O_EVTONLY flag on open */

+#define VNEEDSSNAPSHOT 0x1000000

 
 /*
  * Global vnode data.
 
 /*
  * Global vnode data.


@@ -251,7 +281,8 @@ struct vnode {
 extern struct vnode *rootvnode;        /* root (i.e. "/") vnode */
 
 #ifdef CONFIG_IMGSRC_ACCESS
 extern struct vnode *rootvnode;        /* root (i.e. "/") vnode */
 
 #ifdef CONFIG_IMGSRC_ACCESS

-extern struct vnode *imgsrc_rootvnode;
+#define MAX_IMAGEBOOT_NESTING  2
+extern struct vnode *imgsrc_rootvnodes[];

 #endif /* CONFIG_IMGSRC_ACCESS */
 
 
 #endif /* CONFIG_IMGSRC_ACCESS */
 
 


@@ -345,6 +376,8 @@ struct ostat;
 
 #define BUILDPATH_NO_FS_ENTER 0x1 /* Use cache values, do not enter file system */
 #define BUILDPATH_CHECKACCESS 0x2 /* Check if parents have search rights */
 
 #define BUILDPATH_NO_FS_ENTER 0x1 /* Use cache values, do not enter file system */
 #define BUILDPATH_CHECKACCESS 0x2 /* Check if parents have search rights */

+#define BUILDPATH_CHECK_MOVED 0x4 /* Return EAGAIN if the parent hierarchy is modified */
+

 int    build_path(vnode_t first_vp, char *buff, int buflen, int *outlen, int flags, vfs_context_t ctx);
 
 int    bdevvp(dev_t dev, struct vnode **vpp);
 int    build_path(vnode_t first_vp, char *buff, int buflen, int *outlen, int flags, vfs_context_t ctx);
 
 int    bdevvp(dev_t dev, struct vnode **vpp);


@@ -367,6 +400,10 @@ int        vn_open(struct nameidata *ndp, int fmode, int cmode);
 int    vn_open_modflags(struct nameidata *ndp, int *fmode, int cmode);
 int    vn_open_auth(struct nameidata *ndp, int *fmode, struct vnode_attr *);
 int    vn_close(vnode_t, int flags, vfs_context_t ctx);
 int    vn_open_modflags(struct nameidata *ndp, int *fmode, int cmode);
 int    vn_open_auth(struct nameidata *ndp, int *fmode, struct vnode_attr *);
 int    vn_close(vnode_t, int flags, vfs_context_t ctx);

+errno_t vn_remove(vnode_t dvp, vnode_t *vpp, struct nameidata *ndp, int32_t flags, struct vnode_attr *vap, vfs_context_t ctx);
+errno_t vn_rename(struct vnode *fdvp, struct vnode **fvpp, struct componentname *fcnp, struct vnode_attr *fvap,
+                    struct vnode *tdvp, struct vnode **tvpp, struct componentname *tcnp, struct vnode_attr *tvap,
+                    uint32_t flags, vfs_context_t ctx);

 
 void   lock_vnode_and_post(vnode_t, int);
 
 
 void   lock_vnode_and_post(vnode_t, int);
 


@@ -377,14 +414,30 @@ void      lock_vnode_and_post(vnode_t, int);
                } \
        } while (0) 
                
                } \
        } while (0) 
                

-
+/* Authorization subroutines */
+int    vn_authorize_open_existing(vnode_t vp, struct componentname *cnp, int fmode, vfs_context_t ctx, void *reserved);
+int    vn_authorize_create(vnode_t, struct componentname *, struct vnode_attr *, vfs_context_t, void*); 
+int    vn_attribute_prepare(vnode_t dvp, struct vnode_attr *vap, uint32_t *defaulted_fieldsp, vfs_context_t ctx);
+void   vn_attribute_cleanup(struct vnode_attr *vap, uint32_t defaulted_fields);
+int    vn_authorize_unlink(vnode_t dvp, vnode_t vp, struct componentname *cnp, vfs_context_t ctx, void *reserved);
+int    vn_authorize_rename(struct vnode *fdvp, struct vnode *fvp, struct componentname *fcnp,
+                       struct vnode *tdvp, struct vnode *tvp, struct componentname *tcnp,
+               vfs_context_t ctx, void *reserved);
+int    vn_authorize_rmdir(vnode_t dvp, vnode_t vp, struct componentname *cnp, vfs_context_t ctx, void *reserved);
+
+typedef int (*vn_create_authorizer_t)(vnode_t, struct componentname *, struct vnode_attr *, vfs_context_t, void*);
+int vn_authorize_mkdir(vnode_t, struct componentname *, struct vnode_attr *, vfs_context_t, void*);
+int vn_authorize_null(vnode_t, struct componentname *, struct vnode_attr *, vfs_context_t, void*);
+/* End of authorization subroutines */

 
 #define VN_CREATE_NOAUTH               (1<<0)
 #define VN_CREATE_NOINHERIT            (1<<1)
 #define VN_CREATE_UNION                        (1<<2)
 #define        VN_CREATE_NOLABEL               (1<<3)
 
 #define VN_CREATE_NOAUTH               (1<<0)
 #define VN_CREATE_NOINHERIT            (1<<1)
 #define VN_CREATE_UNION                        (1<<2)
 #define        VN_CREATE_NOLABEL               (1<<3)

-errno_t vn_create(vnode_t, vnode_t *, struct componentname *, struct vnode_attr *, int flags, vfs_context_t);
-
+#define        VN_CREATE_DOOPEN                (1<<4)  /* Open file if a batched operation is available */
+errno_t vn_create(vnode_t, vnode_t *, struct nameidata *, struct vnode_attr *, uint32_t, int, uint32_t*, vfs_context_t);
+int    vn_mkdir(vnode_t dvp, vnode_t *vpp, struct nameidata *ndp, struct vnode_attr *vap, vfs_context_t ctx);
+int    vn_rmdir(vnode_t dvp, vnode_t *vpp, struct nameidata *ndp, struct vnode_attr *vap, vfs_context_t ctx);

 
 int    vn_getxattr(vnode_t, const char *, uio_t, size_t *, int, vfs_context_t);
 int    vn_setxattr(vnode_t, const char *, uio_t, int, vfs_context_t);
 
 int    vn_getxattr(vnode_t, const char *, uio_t, size_t *, int, vfs_context_t);
 int    vn_setxattr(vnode_t, const char *, uio_t, int, vfs_context_t);


@@ -415,6 +468,7 @@ void        cache_enter_with_gen(vnode_t dvp, vnode_t vp, struct componentname *cnp, in
 const char *cache_enter_create(vnode_t dvp, vnode_t vp, struct componentname *cnp);
 
 int vn_pathconf(vnode_t, int, int32_t *, vfs_context_t);
 const char *cache_enter_create(vnode_t dvp, vnode_t vp, struct componentname *cnp);
 
 int vn_pathconf(vnode_t, int, int32_t *, vfs_context_t);

+extern int nc_disabled;        

 
 #define        vnode_lock_convert(v)   lck_mtx_convert_spin(&(v)->v_lock)
 
 
 #define        vnode_lock_convert(v)   lck_mtx_convert_spin(&(v)->v_lock)
 


@@ -423,12 +477,16 @@ void      vnode_lock_spin(vnode_t);
 
 void   vnode_list_lock(void);
 void   vnode_list_unlock(void);
 
 void   vnode_list_lock(void);
 void   vnode_list_unlock(void);

-int    vnode_ref_ext(vnode_t, int);
+
+#define VNODE_REF_FORCE        0x1
+int    vnode_ref_ext(vnode_t, int, int);
+

 void   vnode_rele_ext(vnode_t, int, int);
 void   vnode_rele_internal(vnode_t, int, int, int);
 #ifdef BSD_KERNEL_PRIVATE
 int    vnode_getalways(vnode_t);
 int    vget_internal(vnode_t, int, int);
 void   vnode_rele_ext(vnode_t, int, int);
 void   vnode_rele_internal(vnode_t, int, int, int);
 #ifdef BSD_KERNEL_PRIVATE
 int    vnode_getalways(vnode_t);
 int    vget_internal(vnode_t, int, int);

+errno_t vnode_getiocount(vnode_t, unsigned int, int);

 #endif /* BSD_KERNEL_PRIVATE */
 int    vnode_get_locked(vnode_t);
 int    vnode_put_locked(vnode_t);
 #endif /* BSD_KERNEL_PRIVATE */
 int    vnode_get_locked(vnode_t);
 int    vnode_put_locked(vnode_t);


@@ -448,6 +506,24 @@ errno_t    vnode_setsize(vnode_t, off_t, int ioflag, vfs_context_t);
 int    vnode_setattr_fallback(vnode_t vp, struct vnode_attr *vap, vfs_context_t ctx);
 int    vnode_isspec(vnode_t vp);
 
 int    vnode_setattr_fallback(vnode_t vp, struct vnode_attr *vap, vfs_context_t ctx);
 int    vnode_isspec(vnode_t vp);
 

+
+#ifdef BSD_KERNEL_PRIVATE
+
+typedef uint32_t compound_vnop_id_t;
+#define        COMPOUND_VNOP_OPEN              0x01
+#define        COMPOUND_VNOP_MKDIR             0x02
+#define        COMPOUND_VNOP_RENAME            0x04
+#define        COMPOUND_VNOP_REMOVE            0x08
+#define        COMPOUND_VNOP_RMDIR             0x10
+
+int    vnode_compound_rename_available(vnode_t vp);
+int    vnode_compound_rmdir_available(vnode_t vp);
+int    vnode_compound_mkdir_available(vnode_t vp);
+int    vnode_compound_remove_available(vnode_t vp);
+int    vnode_compound_open_available(vnode_t vp);
+int            vnode_compound_op_available(vnode_t, compound_vnop_id_t);
+#endif /* BSD_KERNEL_PRIVATE */
+

 void vn_setunionwait(vnode_t);
 void vn_checkunionwait(vnode_t);
 void vn_clearunionwait(vnode_t, int);
 void vn_setunionwait(vnode_t);
 void vn_checkunionwait(vnode_t);
 void vn_clearunionwait(vnode_t, int);


@@ -471,9 +547,18 @@ int        vfs_sysctl(int *name, uint32_t namelen, user_addr_t oldp, size_t *oldlenp,
 int    sysctl_vnode(struct sysctl_oid *oidp, void *arg1, int arg2, struct sysctl_req *req);
 
 #ifdef BSD_KERNEL_PRIVATE
 int    sysctl_vnode(struct sysctl_oid *oidp, void *arg1, int arg2, struct sysctl_req *req);
 
 #ifdef BSD_KERNEL_PRIVATE

-void vnode_knoteupdate(struct knote *kn);

 void vnode_setneedinactive(vnode_t);
 int    vnode_hasnamedstreams(vnode_t); /* Does this vnode have associated named streams? */
 void vnode_setneedinactive(vnode_t);
 int    vnode_hasnamedstreams(vnode_t); /* Does this vnode have associated named streams? */

-#endif
+
+void nspace_proc_exit(struct proc *p);
+
+#if CONFIG_TRIGGERS
+/* VFS Internal Vnode Trigger Interfaces (Private) */
+int vnode_trigger_resolve(vnode_t, struct nameidata *, vfs_context_t);
+void vnode_trigger_rearm(vnode_t, vfs_context_t);
+void vfs_nested_trigger_unmounts(mount_t, int, vfs_context_t);
+#endif /* CONFIG_TRIGGERS */
+
+#endif /* BSD_KERNEL_PRIVATE */

 
 #endif /* !_SYS_VNODE_INTERNAL_H_ */
 
 #endif /* !_SYS_VNODE_INTERNAL_H_ */