xnu-1228.7.58.tar.gz

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

diff --git a/bsd/sys/vnode.h b/bsd/sys/vnode.h
index 8e992636bffb25f2e008e61455a76e3a38d3028d..681ad05f0de47fb4a668f4e50cca27c38d8e2430 100644 (file)
--- a/bsd/sys/vnode.h
+++ b/bsd/sys/vnode.h
@@ -1,5 +1,5 @@
 /*
 /*

- * Copyright (c) 2000-2005 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2007 Apple Inc. All rights reserved.

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


@@ -91,8 +91,8 @@ enum vtype    { VNON, VREG, VDIR, VBLK, VCHR, VLNK, VSOCK, VFIFO, VBAD, VSTR,
 enum vtagtype  {
        VT_NON, VT_UFS, VT_NFS, VT_MFS, VT_MSDOSFS, VT_LFS, VT_LOFS, VT_FDESC,
        VT_PORTAL, VT_NULL, VT_UMAP, VT_KERNFS, VT_PROCFS, VT_AFS, VT_ISOFS,
 enum vtagtype  {
        VT_NON, VT_UFS, VT_NFS, VT_MFS, VT_MSDOSFS, VT_LFS, VT_LOFS, VT_FDESC,
        VT_PORTAL, VT_NULL, VT_UMAP, VT_KERNFS, VT_PROCFS, VT_AFS, VT_ISOFS,

-       VT_UNION, VT_HFS, VT_VOLFS, VT_DEVFS, VT_WEBDAV, VT_UDF, VT_AFP,
-       VT_CDDA, VT_CIFS,VT_OTHER};
+       VT_UNION, VT_HFS, VT_ZFS, VT_DEVFS, VT_WEBDAV, VT_UDF, VT_AFP,
+       VT_CDDA, VT_CIFS, VT_OTHER};

 
 
 /*
 
 
 /*


@@ -129,6 +129,9 @@ enum vtagtype       {
 #define        IO_NODELOCKED   0x0008          /* underlying node already locked */
 #define        IO_NDELAY       0x0010          /* FNDELAY flag set in file table */
 #define        IO_NOZEROFILL   0x0020          /* F_SETSIZE fcntl uses to prevent zero filling */
 #define        IO_NODELOCKED   0x0008          /* underlying node already locked */
 #define        IO_NDELAY       0x0010          /* FNDELAY flag set in file table */
 #define        IO_NOZEROFILL   0x0020          /* F_SETSIZE fcntl uses to prevent zero filling */

+#ifdef XNU_KERNEL_PRIVATE
+#define IO_REVOKE      IO_NOZEROFILL   /* revoked close for tty, will Not be used in conjunction */
+#endif /* XNU_KERNEL_PRIVATE */

 #define        IO_TAILZEROFILL 0x0040          /* zero fills at the tail of write */
 #define        IO_HEADZEROFILL 0x0080          /* zero fills at the head of write */
 #define        IO_NOZEROVALID  0x0100          /* do not zero fill if valid page */
 #define        IO_TAILZEROFILL 0x0040          /* zero fills at the tail of write */
 #define        IO_HEADZEROFILL 0x0080          /* zero fills at the head of write */
 #define        IO_NOZEROVALID  0x0100          /* do not zero fill if valid page */


@@ -137,6 +140,11 @@ enum vtagtype      {
 #define IO_NOCACHE     0x0800          /* same effect as VNOCACHE_DATA, but only for this 1 I/O */
 #define IO_RAOFF       0x1000          /* same effect as VRAOFF, but only for this 1 I/O */
 #define IO_DEFWRITE    0x2000          /* defer write if vfs.defwrite is set */
 #define IO_NOCACHE     0x0800          /* same effect as VNOCACHE_DATA, but only for this 1 I/O */
 #define IO_RAOFF       0x1000          /* same effect as VRAOFF, but only for this 1 I/O */
 #define IO_DEFWRITE    0x2000          /* defer write if vfs.defwrite is set */

+#define IO_PASSIVE     0x4000          /* this I/O is marked as background I/O so it won't throttle Throttleable I/O */
+#define IO_BACKGROUND IO_PASSIVE /* used for backward compatibility.  to be removed after IO_BACKGROUND is no longer
+                                                                 * used by DiskImages in-kernel mode */
+#define        IO_NOAUTH       0x8000          /* No authorization checks. */
+

 
 /*
  * Component Name: this structure describes the pathname
 
 /*
  * Component Name: this structure describes the pathname


@@ -183,16 +191,17 @@ struct componentname {
 /*
  * component name operational modifier flags
  */
 /*
  * component name operational modifier flags
  */

-#define        FOLLOW          0x0040  /* follow symbolic links */
+#define        FOLLOW          0x00000040 /* follow symbolic links */
+#define NOTRIGGER      0x10000000 /* don't trigger automounts */

 
 /*
  * component name parameter descriptors.
  */
 
 /*
  * component name parameter descriptors.
  */

-#define        ISDOTDOT        0x002000 /* current component name is .. */
-#define        MAKEENTRY       0x004000 /* entry is to be added to name cache */
-#define        ISLASTCN        0x008000 /* this is last component of pathname */
-#define        ISWHITEOUT      0x020000 /* found whiteout */
-#define        DOWHITEOUT      0x040000 /* do whiteouts */
+#define        ISDOTDOT        0x00002000 /* current component name is .. */
+#define        MAKEENTRY       0x00004000 /* entry is to be added to name cache */
+#define        ISLASTCN        0x00008000 /* this is last component of pathname */
+#define        ISWHITEOUT      0x00020000 /* found whiteout */
+#define        DOWHITEOUT      0x00040000 /* do whiteouts */

 
 
 
 
 
 


@@ -214,6 +223,7 @@ struct vnode_fsparam {
 
 #define        VNFS_NOCACHE    0x01    /* do not add to name cache at this time */
 #define        VNFS_CANTCACHE  0x02    /* never add this instance to the name cache */
 
 #define        VNFS_NOCACHE    0x01    /* do not add to name cache at this time */
 #define        VNFS_CANTCACHE  0x02    /* never add this instance to the name cache */

+#define        VNFS_ADDFSREF   0x04    /* take fs (named) reference */

 
 #define VNCREATE_FLAVOR        0
 #define VCREATESIZE sizeof(struct vnode_fsparam)
 
 #define VNCREATE_FLAVOR        0
 #define VCREATESIZE sizeof(struct vnode_fsparam)


@@ -276,6 +286,7 @@ struct vnode_fsparam {
 #define VNODE_ATTR_va_uuuid            (1LL<<26)       /* 04000000 */
 #define VNODE_ATTR_va_guuid            (1LL<<27)       /* 08000000 */
 #define VNODE_ATTR_va_nchildren                (1LL<<28)       /* 10000000 */
 #define VNODE_ATTR_va_uuuid            (1LL<<26)       /* 04000000 */
 #define VNODE_ATTR_va_guuid            (1LL<<27)       /* 08000000 */
 #define VNODE_ATTR_va_nchildren                (1LL<<28)       /* 10000000 */

+#define VNODE_ATTR_va_dirlinkcount     (1LL<<29)       /* 20000000 */

 
 #define VNODE_ATTR_BIT(n)      (VNODE_ATTR_ ## n)
 /*
 
 #define VNODE_ATTR_BIT(n)      (VNODE_ATTR_ ## n)
 /*


@@ -295,7 +306,8 @@ struct vnode_fsparam {
                                VNODE_ATTR_BIT(va_gen) |                \
                                VNODE_ATTR_BIT(va_name) |               \
                                VNODE_ATTR_BIT(va_type) |               \
                                VNODE_ATTR_BIT(va_gen) |                \
                                VNODE_ATTR_BIT(va_name) |               \
                                VNODE_ATTR_BIT(va_type) |               \

-                               VNODE_ATTR_BIT(va_nchildren))
+                               VNODE_ATTR_BIT(va_nchildren) |          \
+                               VNODE_ATTR_BIT(va_dirlinkcount))

 /*
  * Attributes that can be applied to a new file object.
  */
 /*
  * Attributes that can be applied to a new file object.
  */


@@ -363,8 +375,9 @@ struct vnode_attr {
        guid_t          va_uuuid;       /* file owner UUID */
        guid_t          va_guuid;       /* file group UUID */
        
        guid_t          va_uuuid;       /* file owner UUID */
        guid_t          va_guuid;       /* file group UUID */
        

-       uint64_t        va_nchildren;   /* Number of items in a directory */
-                                       /* Meaningful for directories only */
+       /* Meaningful for directories only */
+       uint64_t        va_nchildren;     /* Number of items in a directory */
+       uint64_t        va_dirlinkcount;  /* Real references to dir (i.e. excluding "." and ".." refs) */

 
        /* add new fields here only */
 };
 
        /* add new fields here only */
 };


@@ -482,9 +495,9 @@ int vnode_removefsref(vnode_t);
 
 int    vnode_hasdirtyblks(vnode_t);
 int    vnode_hascleanblks(vnode_t);
 
 int    vnode_hasdirtyblks(vnode_t);
 int    vnode_hascleanblks(vnode_t);

-#define        VNODE_ASYNC_THROTTLE    18
+#define        VNODE_ASYNC_THROTTLE    15

 /* timeout is in 10 msecs and not hz tick based */
 /* timeout is in 10 msecs and not hz tick based */

-int    vnode_waitforwrites(vnode_t, int, int, int, char *);
+int    vnode_waitforwrites(vnode_t, int, int, int, const char *);

 void   vnode_startwrite(vnode_t);
 void   vnode_writedone(vnode_t);
 
 void   vnode_startwrite(vnode_t);
 void   vnode_writedone(vnode_t);
 


@@ -492,12 +505,15 @@ enum vtype        vnode_vtype(vnode_t);
 uint32_t       vnode_vid(vnode_t);
 mount_t        vnode_mountedhere(vnode_t vp);
 mount_t        vnode_mount(vnode_t);
 uint32_t       vnode_vid(vnode_t);
 mount_t        vnode_mountedhere(vnode_t vp);
 mount_t        vnode_mount(vnode_t);

+errno_t vfs_mountref(mount_t);
+errno_t vfs_mountrele(mount_t);

 dev_t  vnode_specrdev(vnode_t);
 void * vnode_fsnode(vnode_t);
 void   vnode_clearfsnode(vnode_t);
 
 int    vnode_isvroot(vnode_t);
 int    vnode_issystem(vnode_t);
 dev_t  vnode_specrdev(vnode_t);
 void * vnode_fsnode(vnode_t);
 void   vnode_clearfsnode(vnode_t);
 
 int    vnode_isvroot(vnode_t);
 int    vnode_issystem(vnode_t);

+int    vnode_isswap(vnode_t vp);

 int    vnode_ismount(vnode_t);
 int    vnode_isreg(vnode_t);
 int    vnode_isdir(vnode_t);
 int    vnode_ismount(vnode_t);
 int    vnode_isreg(vnode_t);
 int    vnode_isdir(vnode_t);


@@ -506,22 +522,48 @@ int       vnode_isfifo(vnode_t);
 int    vnode_isblk(vnode_t);
 int    vnode_ischr(vnode_t);
 
 int    vnode_isblk(vnode_t);
 int    vnode_ischr(vnode_t);
 

+#ifdef __APPLE_API_UNSTABLE
+int    vnode_isnamedstream(vnode_t);
+#endif
+
+enum vtype     vnode_iftovt(int);
+int    vnode_vttoif(enum vtype);
+int    vnode_makeimode(int, int);
+

 int    vnode_ismountedon(vnode_t);
 void   vnode_setmountedon(vnode_t);
 void   vnode_clearmountedon(vnode_t);
 
 int    vnode_ismountedon(vnode_t);
 void   vnode_setmountedon(vnode_t);
 void   vnode_clearmountedon(vnode_t);
 

+int    vnode_isrecycled(vnode_t);

 int    vnode_isnocache(vnode_t);
 void   vnode_setnocache(vnode_t);
 void   vnode_clearnocache(vnode_t);
 int    vnode_isnoreadahead(vnode_t);
 int    vnode_isnocache(vnode_t);
 void   vnode_setnocache(vnode_t);
 void   vnode_clearnocache(vnode_t);
 int    vnode_isnoreadahead(vnode_t);

+int    vnode_isstandard(vnode_t);

 void   vnode_setnoreadahead(vnode_t);
 void   vnode_clearnoreadahead(vnode_t);
 void   vnode_setnoreadahead(vnode_t);
 void   vnode_clearnoreadahead(vnode_t);

+
+int    vnode_is_openevt(vnode_t);
+void   vnode_set_openevt(vnode_t);
+void   vnode_clear_openevt(vnode_t);
+

 /* left only for compat reasons as User code depends on this from getattrlist, for ex */
 void   vnode_settag(vnode_t, int);
 int    vnode_tag(vnode_t);
 int    vnode_getattr(vnode_t vp, struct vnode_attr *vap, vfs_context_t ctx);
 int    vnode_setattr(vnode_t vp, struct vnode_attr *vap, vfs_context_t ctx);
 
 /* left only for compat reasons as User code depends on this from getattrlist, for ex */
 void   vnode_settag(vnode_t, int);
 int    vnode_tag(vnode_t);
 int    vnode_getattr(vnode_t vp, struct vnode_attr *vap, vfs_context_t ctx);
 int    vnode_setattr(vnode_t vp, struct vnode_attr *vap, vfs_context_t ctx);
 

+vnode_t vfs_rootvnode(void);
+uint32_t vnode_vfsvisflags(vnode_t);
+uint32_t vnode_vfscmdflags(vnode_t);
+struct vfsstatfs *vnode_vfsstatfs(vnode_t);
+void   *vnode_vfsfsprivate(vnode_t);
+vnode_t        current_workingdir(void);
+vnode_t        current_rootdir(void);
+
+void   vnode_uncache_credentials(vnode_t vp);
+void   vnode_setmultipath(vnode_t vp);
+

 #ifdef BSD_KERNEL_PRIVATE
 
 /*
 #ifdef BSD_KERNEL_PRIVATE
 
 /*


@@ -529,15 +571,16 @@ int       vnode_setattr(vnode_t vp, struct vnode_attr *vap, vfs_context_t ctx);
  * VNOP_LOOKUP on this vnode.  Volfs will always ask for it's parent
  * object ID (instead of using the v_parent pointer).
  */
  * VNOP_LOOKUP on this vnode.  Volfs will always ask for it's parent
  * object ID (instead of using the v_parent pointer).
  */

-void   vnode_set_hard_link(vnode_t vp);

 
 vnode_t vnode_parent(vnode_t);
 void vnode_setparent(vnode_t, vnode_t);
 
 vnode_t vnode_parent(vnode_t);
 void vnode_setparent(vnode_t, vnode_t);

-char * vnode_name(vnode_t);
+const char * vnode_name(vnode_t);

 void vnode_setname(vnode_t, char *);
 int vnode_isnoflush(vnode_t);
 void vnode_setnoflush(vnode_t);
 void vnode_clearnoflush(vnode_t);
 void vnode_setname(vnode_t, char *);
 int vnode_isnoflush(vnode_t);
 void vnode_setnoflush(vnode_t);
 void vnode_clearnoflush(vnode_t);

+/* XXX temporary until we can arrive at a KPI for NFS, Seatbelt */
+thread_t vfs_context_thread(vfs_context_t);

 #endif
 
 uint32_t  vnode_vfsmaxsymlen(vnode_t);
 #endif
 
 uint32_t  vnode_vfsmaxsymlen(vnode_t);


@@ -546,8 +589,11 @@ int        vnode_vfstypenum(vnode_t);
 void   vnode_vfsname(vnode_t, char *);
 int    vnode_vfs64bitready(vnode_t);
 
 void   vnode_vfsname(vnode_t, char *);
 int    vnode_vfs64bitready(vnode_t);
 

+int    vfs_context_get_special_port(vfs_context_t, int, ipc_port_t *);
+int    vfs_context_set_special_port(vfs_context_t, int, ipc_port_t);

 proc_t vfs_context_proc(vfs_context_t);
 proc_t vfs_context_proc(vfs_context_t);

-ucred_t        vfs_context_ucred(vfs_context_t);
+vnode_t vfs_context_cwd(vfs_context_t);
+kauth_cred_t   vfs_context_ucred(vfs_context_t);

 int    vfs_context_issuser(vfs_context_t);
 int    vfs_context_pid(vfs_context_t);
 int    vfs_context_issignal(vfs_context_t, sigset_t);
 int    vfs_context_issuser(vfs_context_t);
 int    vfs_context_pid(vfs_context_t);
 int    vfs_context_issignal(vfs_context_t, sigset_t);


@@ -555,6 +601,10 @@ int        vfs_context_suser(vfs_context_t);
 int    vfs_context_is64bit(vfs_context_t);
 vfs_context_t vfs_context_create(vfs_context_t);
 int vfs_context_rele(vfs_context_t);
 int    vfs_context_is64bit(vfs_context_t);
 vfs_context_t vfs_context_create(vfs_context_t);
 int vfs_context_rele(vfs_context_t);

+vfs_context_t vfs_context_current(void);       /* get from current uthread */
+#ifdef __APPLE_API_UNSTABLE
+vfs_context_t vfs_context_kernel(void);                /* get from 1st kernel thread */
+#endif

 
 
 int    vflush(struct mount *mp, struct vnode *skipvp, int flags);
 
 
 int    vflush(struct mount *mp, struct vnode *skipvp, int flags);


@@ -572,7 +622,7 @@ void        vnode_reclaim(vnode_t);
 #define        VNODE_UPDATE_PARENT     0x01
 #define        VNODE_UPDATE_NAME       0x02
 #define        VNODE_UPDATE_CACHE      0x04
 #define        VNODE_UPDATE_PARENT     0x01
 #define        VNODE_UPDATE_NAME       0x02
 #define        VNODE_UPDATE_CACHE      0x04

-void   vnode_update_identity(vnode_t vp, vnode_t dvp, char *name, int name_len, int name_hashval, int flags);
+void   vnode_update_identity(vnode_t vp, vnode_t dvp, const char *name, int name_len, int name_hashval, int flags);

 
 int    vn_bwrite(struct vnop_bwrite_args *ap);
 
 
 int    vn_bwrite(struct vnop_bwrite_args *ap);
 


@@ -582,6 +632,7 @@ int vnode_authattr_new(vnode_t /*dvp*/, struct vnode_attr *, int /*noauth*/, vfs
 errno_t vnode_close(vnode_t, int, vfs_context_t);
 
 int vn_getpath(struct vnode *vp, char *pathbuf, int *len);
 errno_t vnode_close(vnode_t, int, vfs_context_t);
 
 int vn_getpath(struct vnode *vp, char *pathbuf, int *len);

+int vn_getcdhash(struct vnode *vp, off_t offset, unsigned char *cdhash);

 
 /*
  * Flags for the vnode_lookup and vnode_open
 
 /*
  * Flags for the vnode_lookup and vnode_open


@@ -621,13 +672,16 @@ int       vnode_iterate(struct mount *, int, int (*)(struct vnode *, void *), void *);
 #define VNODE_CLAIMED_DONE     3       /* don't drop reference, terminate iteration */
 
 
 #define VNODE_CLAIMED_DONE     3       /* don't drop reference, terminate iteration */
 
 

+#ifdef BSD_KERNEL_PRIVATE
+/* Not in export list so can be private */

 struct stat;
 struct stat;

-int    vn_stat(struct vnode *vp, struct stat *sb, kauth_filesec_t *xsec, vfs_context_t ctx);
-int    vn_stat_noauth(struct vnode *vp, struct stat *sb, kauth_filesec_t *xsec, vfs_context_t ctx);
-int    vn_revoke(vnode_t vp, int flags, vfs_context_t);
-/* XXX BOGUS */
+int    vn_stat(struct vnode *vp, void * sb, kauth_filesec_t *xsec, int isstat64, vfs_context_t ctx);
+int    vn_stat_noauth(struct vnode *vp, void * sb, kauth_filesec_t *xsec, int isstat64, vfs_context_t ctx);

 int    vaccess(mode_t file_mode, uid_t uid, gid_t gid,
 int    vaccess(mode_t file_mode, uid_t uid, gid_t gid,

-                       mode_t acc_mode, struct ucred *cred);
+                       mode_t acc_mode, kauth_cred_t cred);
+#endif /* BSD_KERNEL_PRIVATE */
+
+int    vn_revoke(vnode_t vp, int flags, vfs_context_t);

 
 
 /* namecache function prototypes */
 
 
 /* namecache function prototypes */


@@ -641,9 +695,12 @@ void       cache_purge_negatives(vnode_t vp);
  * if you don't know it (add_name() will then compute the hash).
  * There are no flags for now but maybe someday.
  */
  * if you don't know it (add_name() will then compute the hash).
  * There are no flags for now but maybe someday.
  */

-char *vfs_addname(const char *name, size_t len, u_int nc_hash, u_int flags);
+const char *vfs_addname(const char *name, size_t len, u_int nc_hash, u_int flags);

 int   vfs_removename(const char *name);
 
 int   vfs_removename(const char *name);
 

+int    check_mountedon(dev_t dev, enum vtype type, int  *errorp);
+int    vcount(vnode_t vp);
+

 __END_DECLS
 
 #endif /* KERNEL */
 __END_DECLS
 
 #endif /* KERNEL */