xnu-6153.61.1.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..4e271502f2ce83f77287962fcaebbff0c58e02fa 100644 (file)
--- a/bsd/sys/vnode_internal.h
+++ b/bsd/sys/vnode_internal.h
@@ -1,8 +1,8 @@
 /*
 /*

- * 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@

- * 
+ *

  * This file contains Original Code and/or Modifications of Original Code
  * as defined in and that are subject to the Apple Public Source License
  * Version 2.0 (the 'License'). You may not use this file except in
  * This file contains Original Code and/or Modifications of Original Code
  * as defined in and that are subject to the Apple Public Source License
  * Version 2.0 (the 'License'). You may not use this file except in


@@ -11,10 +11,10 @@
  * unlawful or unlicensed copies of an Apple operating system, or to
  * circumvent, violate, or enable the circumvention or violation of, any
  * terms of an Apple operating system software license agreement.
  * unlawful or unlicensed copies of an Apple operating system, or to
  * circumvent, violate, or enable the circumvention or violation of, any
  * terms of an Apple operating system software license agreement.

- * 
+ *

  * Please obtain a copy of the License at
  * http://www.opensource.apple.com/apsl/ and read it before using this file.
  * Please obtain a copy of the License at
  * http://www.opensource.apple.com/apsl/ and read it before using this file.

- * 
+ *

  * The Original Code and all software distributed under the License are
  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  * The Original Code and all software distributed under the License are
  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,


@@ -22,7 +22,7 @@
  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  * Please see the License for the specific language governing rights and
  * limitations under the License.
  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  * Please see the License for the specific language governing rights and
  * limitations under the License.

- * 
+ *

  * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
  */
 /* Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved */
  * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
  */
 /* Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved */


@@ -93,12 +93,28 @@ struct label;
 
 LIST_HEAD(buflists, buf);
 
 
 LIST_HEAD(buflists, buf);
 

-
-struct unsafe_fsnode {
-       lck_mtx_t fsnodelock;
-       int32_t   fsnode_count;
-       void *    fsnodeowner;
+#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.


@@ -109,149 +125,190 @@ struct unsafe_fsnode {
  * the rest of the structure is protected by the vnode_lock
  */
 struct vnode {
  * the rest of the structure is protected by the vnode_lock
  */
 struct vnode {

-       lck_mtx_t v_lock;                       /* vnode mutex */
-       TAILQ_ENTRY(vnode) v_freelist;          /* vnode freelist */
-       TAILQ_ENTRY(vnode) v_mntvnodes;         /* vnodes for mount point */
-        LIST_HEAD(, namecache) v_nclinks;      /* name cache entries that name this vnode */
-        LIST_HEAD(, namecache) v_ncchildren;   /* name cache entries that regard us as there parent */
-        vnode_t         v_defer_reclaimlist;           /* in case we have to defer the reclaim to avoid recursion */
-        uint32_t v_listflag;                   /* flags protected by the vnode_list_lock (see below) */
-       uint32_t v_flag;                        /* vnode flags (see below) */
-       uint16_t v_lflag;                       /* vnode local and named ref flags */
-       uint8_t  v_iterblkflags;                /* buf iterator flags */
-       uint8_t  v_references;                  /* number of times io_count has been granted */
-       int32_t  v_kusecount;                   /* count of in-kernel refs */
-       int32_t  v_usecount;                    /* reference count of users */
-       int32_t  v_iocount;                     /* iocounters */
-       void *   v_owner;                       /* act that owns the vnode */
-       uint16_t v_type;                        /* vnode type */
-       uint16_t v_tag;                         /* type of underlying data */
-       uint32_t v_id;                          /* identity of vnode contents */
+       lck_mtx_t v_lock;                       /* vnode mutex */
+       TAILQ_ENTRY(vnode) v_freelist;          /* vnode freelist */
+       TAILQ_ENTRY(vnode) v_mntvnodes;         /* vnodes for mount point */
+       TAILQ_HEAD(, namecache) v_ncchildren;   /* name cache entries that regard us as their parent */
+       LIST_HEAD(, namecache) v_nclinks;       /* name cache entries that name this vnode */
+       vnode_t  v_defer_reclaimlist;           /* in case we have to defer the reclaim to avoid recursion */
+       uint32_t v_listflag;                    /* flags protected by the vnode_list_lock (see below) */
+       uint32_t v_flag;                        /* vnode flags (see below) */
+       uint16_t v_lflag;                       /* vnode local and named ref flags */
+       uint8_t  v_iterblkflags;                /* buf iterator flags */
+       uint8_t  v_references;                  /* number of times io_count has been granted */
+       int32_t  v_kusecount;                   /* count of in-kernel refs */
+       int32_t  v_usecount;                    /* reference count of users */
+       int32_t  v_iocount;                     /* iocounters */
+       void *   v_owner;                       /* act that owns the vnode */
+       uint16_t v_type;                        /* vnode type */
+       uint16_t v_tag;                         /* type of underlying data */
+       uint32_t v_id;                          /* identity of vnode contents */

        union {
        union {

-               struct mount    *vu_mountedhere;/* ptr to mounted vfs (VDIR) */
-               struct socket   *vu_socket;     /* unix ipc (VSOCK) */
-               struct specinfo *vu_specinfo;   /* device (VCHR, VBLK) */
-               struct fifoinfo *vu_fifoinfo;   /* fifo (VFIFO) */
-               struct ubc_info *vu_ubcinfo;    /* valid for (VREG) */
+               struct mount    *vu_mountedhere;/* ptr to mounted vfs (VDIR) */
+               struct socket   *vu_socket;     /* unix ipc (VSOCK) */
+               struct specinfo *vu_specinfo;   /* device (VCHR, VBLK) */
+               struct fifoinfo *vu_fifoinfo;   /* fifo (VFIFO) */
+               struct ubc_info *vu_ubcinfo;    /* valid for (VREG) */

        } v_un;
        } v_un;

-       struct  buflists v_cleanblkhd;          /* clean blocklist head */
-       struct  buflists v_dirtyblkhd;          /* dirty blocklist head */
-       struct klist v_knotes;                  /* knotes attached to this vnode */
-        /*
+       struct  buflists v_cleanblkhd;          /* clean blocklist head */
+       struct  buflists v_dirtyblkhd;          /* dirty blocklist head */
+       struct klist v_knotes;                  /* knotes attached to this vnode */
+       /*

         * the following 4 fields are protected
         * the following 4 fields are protected

-        * by the name_cache_lock held in 
+        * by the name_cache_lock held in

         * excluive mode
         */
         * excluive mode
         */

-        kauth_cred_t   v_cred;                 /* last authorized credential */
-        kauth_action_t v_authorized_actions;   /* current authorized actions for v_cred */
-        int            v_cred_timestamp;       /* determine if entry is stale for MNTK_AUTH_OPAQUE */
-        int            v_nc_generation;        /* changes when nodes are removed from the name cache */
-        /*
+       kauth_cred_t    v_cred;                 /* last authorized credential */
+       kauth_action_t  v_authorized_actions;   /* current authorized actions for v_cred */
+       int             v_cred_timestamp;       /* determine if entry is stale for MNTK_AUTH_OPAQUE */
+       int             v_nc_generation;        /* changes when nodes are removed from the name cache */
+       /*

         * back to the vnode lock for protection
         */
         * back to the vnode lock for protection
         */

-       int32_t         v_numoutput;                    /* num of writes in progress */
-       int32_t         v_writecount;                   /* reference count of writers */
-       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__
-        struct unsafe_fsnode *v_unsafefs;      /* pointer to struct used to lock */
-#else 
-       int32_t         v_reserved1;
-       int32_t         v_reserved2;
-#endif /* __LP64__ */
-       int     (**v_op)(void *);               /* vnode operations vector */
-       mount_t v_mount;                        /* ptr to vfs we are in */
-       void *  v_data;                         /* private data for fs */
+       int32_t         v_numoutput;                    /* num of writes in progress */
+       int32_t         v_writecount;                   /* reference count of writers */
+       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 */
+       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
 #if CONFIG_MACF

-       struct label *v_label;                  /* MAC security label */
+       struct label *v_label;                  /* MAC security label */

 #endif
 #endif

+#if CONFIG_TRIGGERS
+       vnode_resolve_t v_resolve;              /* trigger vnode resolve info (VDIR only) */
+#endif /* CONFIG_TRIGGERS */
+#if CONFIG_FIRMLINKS
+       vnode_t v_fmlink;                       /* firmlink if set (VDIR only), Points to source
+                                                *  if VFLINKTARGET is set, if  VFLINKTARGET is not
+                                                *  set, points to target */
+#endif /* CONFIG_FIRMLINKS */

 };
 
 };
 

-#define        v_mountedhere   v_un.vu_mountedhere
-#define        v_socket        v_un.vu_socket
-#define        v_specinfo      v_un.vu_specinfo
-#define        v_fifoinfo      v_un.vu_fifoinfo
-#define v_ubcinfo      v_un.vu_ubcinfo
+#define v_mountedhere   v_un.vu_mountedhere
+#define v_socket        v_un.vu_socket
+#define v_specinfo      v_un.vu_specinfo
+#define v_fifoinfo      v_un.vu_fifoinfo
+#define v_ubcinfo       v_un.vu_ubcinfo

 
 
 /*
  * v_iterblkflags
  */
 
 
 /*
  * v_iterblkflags
  */

-#define VBI_ITER               0x1
-#define VBI_ITERWANT           0x2
-#define VBI_CLEAN              0x4
-#define VBI_DIRTY              0x8
-#define VBI_NEWBUF             0x10
+#define VBI_ITER                0x1
+#define VBI_ITERWANT            0x2
+#define VBI_CLEAN               0x4
+#define VBI_DIRTY               0x8
+#define VBI_NEWBUF              0x10

 
 /*
  * 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
  */

-#define        VL_SUSPENDED    0x0001          /* vnode is suspended */
-#define        VL_DRAIN        0x0002          /* vnode is being drained */
-#define        VL_TERMINATE    0x0004          /* vnode is in the process of being recycled */
-#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_LABELWAIT    0x0200          /* vnode is marked for labeling */
-#define        VL_LABELED      0x0400          /* vnode is labeled */
-#define        VL_LWARNED      0x0800
-#define VL_HASSTREAMS  0x1000          /* vnode has had at least one associated named stream vnode (may not have one any longer) */
-
-#define        VNAMED_UBC      0x2000          /* ubc named reference */
-#define VNAMED_MOUNT   0x4000          /* mount point named reference */
-#define        VNAMED_FSHASH   0x8000          /* FS hash named reference */
+#define VL_SUSPENDED    0x0001          /* vnode is suspended */
+#define VL_DRAIN        0x0002          /* vnode is being drained */
+#define VL_TERMINATE    0x0004          /* vnode is in the process of being recycled */
+#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_NEEDINACTIVE 0x0080          /* delay VNOP_INACTIVE until iocount goes to 0 */
+
+#define VL_LABEL        0x0100          /* vnode is marked for labeling */
+#define VL_LABELWAIT    0x0200          /* vnode is marked for labeling */
+#define VL_LABELED      0x0400          /* vnode is labeled */
+#define VL_LWARNED      0x0800
+#define VL_HASSTREAMS   0x1000          /* vnode has had at least one associated named stream vnode (may not have one any longer) */
+
+#define VNAMED_UBC      0x2000          /* ubc named reference */
+#define VNAMED_MOUNT    0x4000          /* mount point named reference */
+#define VNAMED_FSHASH   0x8000          /* FS hash named reference */

 
 /*
  * v_flags
  */
 
 /*
  * v_flags
  */

-#define        VROOT           0x000001        /* root of its file system */
-#define        VTEXT           0x000002        /* vnode is a pure text prototype */
-#define        VSYSTEM         0x000004        /* vnode being used by kernel */
-#define        VISTTY          0x000008        /* vnode represents a tty */
-#define        VRAGE           0x000010        /* vnode is in rapid age state */
-#define VBDEVVP                0x000020        /* vnode created by bdevvp */
-#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        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        VRAOFF          0x002000        /* read ahead disabled */
-#define        VNCACHEABLE     0x004000        /* vnode is allowed to be put back in name cache */
-#if NAMEDSTREAMS
-#define        VISSHADOW       0x008000        /* vnode is a shadow file */
-#endif
-#define        VSWAP           0x010000        /* vnode is being used as swapfile */
-#define        VTHROTTLED      0x020000        /* writes or pageouts have been throttled */
-               /* wakeup tasks waiting when count falls below threshold */
-#define        VNOFLUSH        0x040000        /* don't vflush() if SKIPSYSTEM */
-#define        VLOCKLOCAL      0x080000        /* this vnode does adv locking in vfs */
-#define        VISHARDLINK     0x100000        /* hard link needs special processing on lookup and in volfs */
-#define        VISUNION        0x200000        /* union special processing */
+#define VROOT           0x000001        /* root of its file system */
+#define VTEXT           0x000002        /* vnode is a pure text prototype */
+#define VSYSTEM         0x000004        /* vnode being used by kernel */
+#define VISTTY          0x000008        /* vnode represents a tty */
+#define VRAGE           0x000010        /* vnode is in rapid age state */
+#define VBDEVVP         0x000020        /* vnode created by bdevvp */
+#define VDEVFLUSH       0x000040        /* device vnode after vflush */
+#define VMOUNT          0x000080        /* mount operation in progress */
+#define VBWAIT          0x000100        /* waiting for output to complete */
+#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 VRAOFF          0x002000        /* read ahead disabled */
+#define VNCACHEABLE     0x004000        /* vnode is allowed to be put back in name cache */

 #if NAMEDSTREAMS
 #if NAMEDSTREAMS

-#define        VISNAMEDSTREAM  0x400000        /* vnode is a named stream (eg HFS resource fork) */
+#define VISSHADOW       0x008000        /* vnode is a shadow file */

 #endif
 #endif

+#define VSWAP           0x010000        /* vnode is being used as swapfile */
+#define VTHROTTLED      0x020000        /* writes or pageouts have been throttled */
+/* wakeup tasks waiting when count falls below threshold */
+#define VNOFLUSH        0x040000        /* don't vflush() if SKIPSYSTEM */
+#define VLOCKLOCAL      0x080000        /* this vnode does adv locking in vfs */
+#define VISHARDLINK     0x100000        /* hard link needs special processing on lookup and in volfs */
+#define VISUNION        0x200000        /* union special processing */
+#define VISNAMEDSTREAM  0x400000        /* vnode is a named stream (eg HFS resource fork) */

 #define VOPENEVT        0x800000        /* if process is P_CHECKOPENEVT, then or in the O_EVTONLY flag on open */
 #define VOPENEVT        0x800000        /* if process is P_CHECKOPENEVT, then or in the O_EVTONLY flag on open */

+#define VNEEDSSNAPSHOT 0x1000000
+#define VNOCS          0x2000000        /* is there no code signature available */
+#define VISDIRTY       0x4000000        /* vnode will need IO if reclaimed */
+#define VFASTDEVCANDIDATE  0x8000000        /* vnode is a candidate to store on a fast device */
+#define VAUTOCANDIDATE 0x10000000       /* vnode was automatically marked as a fast-dev candidate */
+#define VFMLINKTARGET  0x20000000       /* vnode is firmlink target */
+/*
+ *  0x40000000 not used
+ *  0x80000000 not used.
+ */
+
+/*
+ * This structure describes vnode data which is specific to a file descriptor.
+ * It is currently used only for file descriptors which are for opened for
+ * directories.
+ */
+struct fd_vn_data {
+       lck_mtx_t fv_lock;   /* Used to serialize directory enumeration on fd */
+       off_t     fv_offset; /* Offset to be used */
+       void      *fv_dircookie; /* If FS doesn't like offsets in directories */
+       caddr_t   fv_buf;    /* Temporary buffer to store directory entries */
+       size_t    fv_bufsiz;  /* Valid size of fv_buf */
+       size_t    fv_bufdone; /* How much of fv_buf is processed */
+       size_t    fv_bufallocsiz; /* Allocation size determined for Buffer*/
+       off_t     fv_soff;   /* Starting FS offset for this buffer */
+       off_t     fv_eoff;   /* Ending FS offset for this buffer */
+       int       fv_eofflag;/* Does fv_eoff represent EOF ? */
+};
+
+/*
+ * FV_DIRBUF_START_SIZ is the initial size of the buffer passed to VNOP_READDIR.
+ * That may not be enough for some filesytems so the current algorithm works its
+ * way upto FV_DIRBUF_MAX_SIZ
+ */
+#define FV_DIRBUF_DIRENTRY_SIZ  (sizeof(struct direntry))
+#define FV_DIRBUF_START_SIZ     FV_DIRBUF_DIRENTRY_SIZ
+#define FV_DIRBUF_MAX_SIZ       (4*(sizeof(struct direntry)))
+
+#define FV_LOCK(fvd) lck_mtx_lock(&(((struct fd_vn_data *)fvd)->fv_lock))
+#define FV_UNLOCK(fvd) lck_mtx_unlock(&(((struct fd_vn_data *)fvd)->fv_lock))

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

-extern struct vnode *rootvnode;        /* root (i.e. "/") vnode */
+extern  struct vnode *rootvnode;        /* root (i.e. "/") vnode */

 
 #ifdef CONFIG_IMGSRC_ACCESS
 
 #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 */
 
 


@@ -262,14 +319,16 @@ extern    struct vnode *imgsrc_rootvnode;
 /*
  * Flags for vdesc_flags:
  */
 /*
  * Flags for vdesc_flags:
  */

-#define VDESC_MAX_VPS          16
+#define VDESC_MAX_VPS           16

 /* Low order 16 flag bits are reserved for willrele flags for vp arguments. */
 /* Low order 16 flag bits are reserved for willrele flags for vp arguments. */

-#define VDESC_VP0_WILLRELE     0x0001
-#define VDESC_VP1_WILLRELE     0x0002
-#define VDESC_VP2_WILLRELE     0x0004
-#define VDESC_VP3_WILLRELE     0x0008
-#define VDESC_NOMAP_VPP                0x0100
-#define VDESC_VPP_WILLRELE     0x0200
+#define VDESC_VP0_WILLRELE      0x00001
+#define VDESC_VP1_WILLRELE      0x00002
+#define VDESC_VP2_WILLRELE      0x00004
+#define VDESC_VP3_WILLRELE      0x00008
+#define VDESC_NOMAP_VPP         0x00100
+#define VDESC_VPP_WILLRELE      0x00200
+
+#define VDESC_DISABLED          0x10000 /* descriptor defined but op is unused, has no op slot */

 
 /*
  * VDESC_NO_OFFSET is used to identify the end of the offset list
 
 /*
  * VDESC_NO_OFFSET is used to identify the end of the offset list


@@ -281,9 +340,9 @@ extern      struct vnode *imgsrc_rootvnode;
  * This structure describes the vnode operation taking place.
  */
 struct vnodeop_desc {
  * This structure describes the vnode operation taking place.
  */
 struct vnodeop_desc {

-       int     vdesc_offset;           /* offset in vector--first for speed */
-       const char *vdesc_name;         /* a readable name for debugging */
-       int     vdesc_flags;            /* VDESC_* flags */
+       int     vdesc_offset;           /* offset in vector--first for speed */
+       const char *vdesc_name;         /* a readable name for debugging */
+       int     vdesc_flags;            /* VDESC_* flags */

 
        /*
         * These ops are used by bypass routines to map and locate arguments.
 
        /*
         * These ops are used by bypass routines to map and locate arguments.


@@ -291,18 +350,18 @@ struct vnodeop_desc {
         * they are useful to (for example) transport layers.
         * Nameidata is useful because it has a cred in it.
         */
         * they are useful to (for example) transport layers.
         * Nameidata is useful because it has a cred in it.
         */

-       int     *vdesc_vp_offsets;      /* list ended by VDESC_NO_OFFSET */
-       int     vdesc_vpp_offset;       /* return vpp location */
-       int     vdesc_cred_offset;      /* cred location, if any */
-       int     vdesc_proc_offset;      /* proc location, if any */
-       int     vdesc_componentname_offset; /* if any */
-       int     vdesc_context_offset;   /* context location, if any */
+       int     *vdesc_vp_offsets;      /* list ended by VDESC_NO_OFFSET */
+       int     vdesc_vpp_offset;       /* return vpp location */
+       int     vdesc_cred_offset;      /* cred location, if any */
+       int     vdesc_proc_offset;      /* proc location, if any */
+       int     vdesc_componentname_offset; /* if any */
+       int     vdesc_context_offset;   /* context location, if any */

        /*
         * Finally, we've got a list of private data (about each operation)
         * for each transport layer.  (Support to manage this list is not
         * yet part of BSD.)
         */
        /*
         * Finally, we've got a list of private data (about each operation)
         * for each transport layer.  (Support to manage this list is not
         * yet part of BSD.)
         */

-       caddr_t *vdesc_transports;
+       caddr_t *vdesc_transports;

 };
 
 /*
 };
 
 /*


@@ -318,11 +377,11 @@ extern struct vnodeop_desc *vnodeop_descs[];
  * Crays, so if you decide to port this to such a serious machine,
  * you might want to consult Intrisics.h's XtOffset{,Of,To}.
  */
  * Crays, so if you decide to port this to such a serious machine,
  * you might want to consult Intrisics.h's XtOffset{,Of,To}.
  */

-#define VOPARG_OFFSET(p_type,field) \
-        ((int) (((char *) (&(((p_type)NULL)->field))) - ((char *) NULL)))
-#define VOPARG_OFFSETOF(s_type,field) \
+#define VOPARG_OFFSET(p_type, field) \
+       ((int) (((char *) (&(((p_type)NULL)->field))) - ((char *) NULL)))
+#define VOPARG_OFFSETOF(s_type, field) \

        VOPARG_OFFSET(s_type*,field)
        VOPARG_OFFSET(s_type*,field)

-#define VOPARG_OFFSETTO(S_TYPE,S_OFFSET,STRUCT_P) \
+#define VOPARG_OFFSETTO(S_TYPE, S_OFFSET, STRUCT_P) \

        ((S_TYPE)(((char*)(STRUCT_P))+(S_OFFSET)))
 
 
        ((S_TYPE)(((char*)(STRUCT_P))+(S_OFFSET)))
 
 


@@ -332,121 +391,163 @@ extern struct vnodeop_desc *vnodeop_descs[];
  * vclean changes the ops vector and then wants to call ops with the old
  * vector.
  */
  * vclean changes the ops vector and then wants to call ops with the old
  * vector.
  */

-#define VOCALL(OPSV,OFF,AP) (( *((OPSV)[(OFF)])) (AP))
+#define VOCALL(OPSV, OFF, AP) (( *((OPSV)[(OFF)])) (AP))

 
 /*
  * This call works for vnodes in the kernel.
  */
 
 /*
  * This call works for vnodes in the kernel.
  */

-#define VCALL(VP,OFF,AP) VOCALL((VP)->v_op,(OFF),(AP))
+#define VCALL(VP, OFF, AP) VOCALL((VP)->v_op,(OFF),(AP))

 #define VDESC(OP) (& __CONCAT(OP,_desc))
 #define VOFFSET(OP) (VDESC(OP)->vdesc_offset)
 
 struct ostat;
 
 #define VDESC(OP) (& __CONCAT(OP,_desc))
 #define VOFFSET(OP) (VDESC(OP)->vdesc_offset)
 
 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 */
-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);
-void   cvtstat(struct stat *st, struct ostat *ost);
-void   vprint(const char *label, struct vnode *vp);
+/* bdevvp moved to vnode.h as private KPI */
+void    cvtstat(struct stat *st, struct ostat *ost);
+void    vprint(const char *label, struct vnode *vp);

 
 
 
 

-__private_extern__ int is_package_name(const char *name, int len);

 __private_extern__ int set_package_extensions_table(user_addr_t data, int nentries, int maxwidth);
 __private_extern__ int set_package_extensions_table(user_addr_t data, int nentries, int maxwidth);

-int    vn_rdwr_64(enum uio_rw rw, struct vnode *vp, uint64_t base,
-                       int64_t len, off_t offset, enum uio_seg segflg,
-                       int ioflg, kauth_cred_t cred, int64_t *aresid,
-                       struct proc *p);
+int     vn_rdwr_64(enum uio_rw rw, struct vnode *vp, uint64_t base,
+    int64_t len, off_t offset, enum uio_seg segflg,
+    int ioflg, kauth_cred_t cred, int64_t *aresid,
+    struct proc *p);

 #if CONFIG_MACF
 #if CONFIG_MACF

-int    vn_setlabel (struct vnode *vp, struct label *intlabel,
-           vfs_context_t context);
+int     vn_setlabel(struct vnode *vp, struct label *intlabel,
+    vfs_context_t context);

 #endif
 #endif

-void   fifo_printinfo(struct vnode *vp);
-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);
-
-void   lock_vnode_and_post(vnode_t, int);
+void    fifo_printinfo(struct vnode *vp);
+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);
+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);

 
 #define post_event_if_success(_vp, _error, _event) \
        do { \
 
 #define post_event_if_success(_vp, _error, _event) \
        do { \

-               if (0 == (_error)) {    \
-                       lock_vnode_and_post((_vp), (_event)); \
-               } \
-       } while (0) 
-               
-
-
-#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);
-
-
-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_removexattr(vnode_t, const char *, int, vfs_context_t);
-int    vn_listxattr(vnode_t, uio_t, size_t *, int, vfs_context_t);
-
-int    default_getxattr(vnode_t, const char *, uio_t, size_t *, int, vfs_context_t);
-int    default_setxattr(vnode_t, const char *, uio_t, int, vfs_context_t);
-int    default_removexattr(vnode_t, const char *, int, vfs_context_t);
-
-int check_appledouble_header(vnode_t, vfs_context_t);
+               if (0 == (_error)) {    \
+                       lock_vnode_and_post((_vp), (_event)); \
+               } \
+       } 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_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_renamex(struct vnode *fdvp, struct vnode *fvp, struct componentname *fcnp,
+    struct vnode *tdvp, struct vnode *tvp, struct componentname *tcnp,
+    vfs_context_t ctx, vfs_rename_flags_t flags, void *reserved);
+int vn_authorize_renamex_with_paths(struct vnode *fdvp, struct vnode *fvp, struct componentname *fcnp, const char *from_path,
+    struct vnode *tdvp, struct vnode *tvp, struct componentname *tcnp, const char *to_path,
+    vfs_context_t ctx, vfs_rename_flags_t flags, 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*);
+int vnode_attr_authorize_dir_clone(struct vnode_attr *vap, kauth_action_t action,
+    struct vnode_attr *dvap, vnode_t sdvp, mount_t mp, dir_clone_authorizer_op_t vattr_op,
+    uint32_t flags, vfs_context_t ctx, void *reserved);
+/* 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_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_removexattr(vnode_t, const char *, int, vfs_context_t);
+int     vn_listxattr(vnode_t, uio_t, size_t *, int, vfs_context_t);

 
 #if NAMEDSTREAMS
 errno_t  vnode_getnamedstream(vnode_t, vnode_t *, const char *, enum nsoperation, int, vfs_context_t);
 errno_t  vnode_makenamedstream(vnode_t, vnode_t *, const char *, int, vfs_context_t);
 errno_t  vnode_removenamedstream(vnode_t, vnode_t, const char *, int, vfs_context_t);
 errno_t  vnode_flushnamedstream(vnode_t vp, vnode_t svp, vfs_context_t context);
 
 #if NAMEDSTREAMS
 errno_t  vnode_getnamedstream(vnode_t, vnode_t *, const char *, enum nsoperation, int, vfs_context_t);
 errno_t  vnode_makenamedstream(vnode_t, vnode_t *, const char *, int, vfs_context_t);
 errno_t  vnode_removenamedstream(vnode_t, vnode_t, const char *, int, vfs_context_t);
 errno_t  vnode_flushnamedstream(vnode_t vp, vnode_t svp, vfs_context_t context);

-errno_t  vnode_relenamedstream(vnode_t vp, vnode_t svp, vfs_context_t context);
+errno_t  vnode_relenamedstream(vnode_t vp, vnode_t svp);
+errno_t  vnode_verifynamedstream(vnode_t vp);

 #endif
 
 
 #endif
 
 

-void   nchinit(void) __attribute__((section("__TEXT, initcode")));
-int    resize_namecache(uint32_t newsize);
-void   name_cache_lock_shared(void);
-void   name_cache_lock(void);
-void   name_cache_unlock(void);
-void   cache_enter_with_gen(vnode_t dvp, vnode_t vp, struct componentname *cnp, int gen);
+void    nchinit(void);
+int     resize_namecache(int newsize);
+void    name_cache_lock_shared(void);
+void    name_cache_lock(void);
+void    name_cache_unlock(void);
+void    cache_enter_with_gen(vnode_t dvp, vnode_t vp, struct componentname *cnp, int gen);

 const char *cache_enter_create(vnode_t dvp, vnode_t vp, struct componentname *cnp);
 
 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)
+void    vnode_lock_spin(vnode_t);

 
 

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

 #ifdef BSD_KERNEL_PRIVATE
 #ifdef BSD_KERNEL_PRIVATE

-int    vnode_getalways(vnode_t);
-int    vget_internal(vnode_t, int, int);
+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 */
 #endif /* BSD_KERNEL_PRIVATE */

-int    vnode_get_locked(vnode_t);
-int    vnode_put_locked(vnode_t);
+int     vnode_get_locked(vnode_t);
+int     vnode_put_locked(vnode_t);
+
+int     vnode_issock(vnode_t);
+int     vnode_isaliased(vnode_t);
+
+void    unlock_fsnode(vnode_t, int *);
+int     lock_fsnode(vnode_t, int *);

 
 

-int    vnode_issock(vnode_t);
-int    vnode_isaliased(vnode_t);
+errno_t vnode_resume(vnode_t);
+errno_t vnode_suspend(vnode_t);

 
 

-void   unlock_fsnode(vnode_t, int *);
-int    lock_fsnode(vnode_t, int *);

 
 

-errno_t        vnode_resume(vnode_t);
-errno_t        vnode_suspend(vnode_t);
+errno_t vnode_mtime(vnode_t, struct timespec *, vfs_context_t);
+errno_t vnode_flags(vnode_t, uint32_t *, vfs_context_t);

 
 

+errno_t vnode_size(vnode_t, off_t *, vfs_context_t);
+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);

 
 

-errno_t        vnode_size(vnode_t, off_t *, vfs_context_t);
-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);
+
+#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_setunionwait(vnode_t);
 void vn_checkunionwait(vnode_t);


@@ -455,25 +556,62 @@ void vn_clearunionwait(vnode_t, int);
 void SPECHASH_LOCK(void);
 void SPECHASH_UNLOCK(void);
 
 void SPECHASH_LOCK(void);
 void SPECHASH_UNLOCK(void);
 

-void   vnode_authorize_init(void) __attribute__((section("__TEXT, initcode")));
+void    vnode_authorize_init(void);

 
 

-void   vfsinit(void) __attribute__((section("__TEXT, initcode")));
+void    vfsinit(void);

 void vnode_lock(vnode_t);
 void vnode_unlock(vnode_t);
 
 void vnode_lock(vnode_t);
 void vnode_unlock(vnode_t);
 

+void vn_print_state(vnode_t /* vp */, const char * /* fmt */, ...)
+__printflike(2, 3);
+
+#if DEVELOPMENT || DEBUG
+#define VNASSERT(exp, vp, msg)                                          \
+do {                                                                    \
+       if (__improbable(!(exp))) {                                     \
+               vn_print_state(vp, "VNASSERT failed %s:%d\n", __FILE__, \
+                   __LINE__);                                          \
+               panic msg;                                              \
+       }                                                               \
+} while (0)
+#else
+#define VNASSERT(exp, vp, msg)
+#endif /* DEVELOPMENT || DEBUG */
+

 /*
  * XXX exported symbols; should be static
  */
 /*
  * XXX exported symbols; should be static
  */

-void   vfs_op_init(void) __attribute__((section("__TEXT, initcode")));
-void   vfs_opv_init(void) __attribute__((section("__TEXT, initcode")));
-int    vfs_sysctl(int *name, uint32_t namelen, user_addr_t oldp, size_t *oldlenp,
-               user_addr_t newp, size_t newlen, struct proc *p);
-int    sysctl_vnode(struct sysctl_oid *oidp, void *arg1, int arg2, struct sysctl_req *req);
+void    vfs_op_init(void);
+void    vfs_opv_init(void);

 
 #ifdef BSD_KERNEL_PRIVATE
 
 #ifdef BSD_KERNEL_PRIVATE

-void vnode_knoteupdate(struct knote *kn);
+int vfs_sysctl_node SYSCTL_HANDLER_ARGS;

 void vnode_setneedinactive(vnode_t);
 void vnode_setneedinactive(vnode_t);

-int    vnode_hasnamedstreams(vnode_t); /* Does this vnode have associated named streams? */
-#endif
+int     vnode_hasnamedstreams(vnode_t); /* Does this vnode have associated named streams? */
+
+errno_t
+vnode_readdir64(struct vnode *vp, struct uio *uio, int flags, int *eofflag,
+    int *numdirent, vfs_context_t ctxp);
+
+void vnode_setswapmount(vnode_t);
+int64_t vnode_getswappin_avail(vnode_t);
+
+int vnode_get_snapdir(vnode_t, vnode_t *, vfs_context_t);
+
+#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 */
+
+int     build_path_with_parent(vnode_t, vnode_t /* parent */, char *, int, int *, int, vfs_context_t);
+
+void    nspace_resolver_init(void);
+void    nspace_resolver_exited(struct proc *);
+
+int     vnode_materialize_dataless_file(vnode_t, uint64_t);
+
+#endif /* BSD_KERNEL_PRIVATE */

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