xnu-6153.101.6.tar.gz

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

diff --git a/bsd/sys/vnode.h b/bsd/sys/vnode.h
index e5263caf4dd0108e42b8b9c50151a78163c1bfd4..7dfb01ef2abcd2a739fa3587c19d22b1e0ecf9d9 100644 (file)
--- a/bsd/sys/vnode.h
+++ b/bsd/sys/vnode.h
@@ -559,6 +559,8 @@ struct vnode_trigger_param {
 #define VNODE_ATTR_va_fsid64            (1LL<<41)       /* 20000000000 */
 #define VNODE_ATTR_va_write_gencount    (1LL<<42)       /* 40000000000 */
 #define VNODE_ATTR_va_private_size      (1LL<<43)       /* 80000000000 */
+#define VNODE_ATTR_va_clone_id          (1LL<<44)       /* 100000000000 */
+#define VNODE_ATTR_va_extflags          (1LL<<45)       /* 200000000000 */
 
 #define VNODE_ATTR_BIT(n)       (VNODE_ATTR_ ## n)
 
@@ -608,7 +610,9 @@ struct vnode_trigger_param {
                                VNODE_ATTR_BIT(va_rsrc_alloc) |         \
                                VNODE_ATTR_BIT(va_fsid64) |             \
                                VNODE_ATTR_BIT(va_write_gencount) |     \
-                               VNODE_ATTR_BIT(va_private_size))
+                               VNODE_ATTR_BIT(va_private_size) |       \
+                               VNODE_ATTR_BIT(va_clone_id) |           \
+                               VNODE_ATTR_BIT(va_extflags))
 
 /*
  * Read-only attributes.
@@ -637,8 +641,11 @@ struct vnode_trigger_param {
                                VNODE_ATTR_BIT(va_rsrc_length) |        \
                                VNODE_ATTR_BIT(va_rsrc_alloc) |         \
                                VNODE_ATTR_BIT(va_fsid64) |             \
-                               VNODE_ATTR_BIT(va_write_gencount) |             \
-                               VNODE_ATTR_BIT(va_private_size))
+                               VNODE_ATTR_BIT(va_write_gencount) |     \
+                               VNODE_ATTR_BIT(va_private_size) |       \
+                               VNODE_ATTR_BIT(va_clone_id) |           \
+                               VNODE_ATTR_BIT(va_extflags))
+
 /*
  * Attributes that can be applied to a new file object.
  */
@@ -742,6 +749,8 @@ struct vnode_attr {
        uint32_t va_write_gencount;     /* counter that increments each time the file changes */
 
        uint64_t va_private_size; /* If the file were deleted, how many bytes would be freed immediately */
+       uint64_t va_clone_id;     /* If a file is cloned this is a unique id shared by all "perfect" clones */
+       uint64_t va_extflags;     /* extended file/directory flags */
 
        /* add new fields here only */
 };
@@ -1689,6 +1698,19 @@ int     vnode_isdyldsharedcache(vnode_t vp);
  */
 int     vn_authorize_unlink(vnode_t dvp, vnode_t vp, struct componentname *cnp, vfs_context_t ctx, void *reserved);
 
+
+/*!
+ *  @function vn_authorize_rmdir
+ *  @abstract Authorize an rmdir operation given the vfs_context_t
+ *  @discussion Check if the context assocated with vfs_context_t is allowed to rmdir the vnode vp in directory dvp.
+ *  @param dvp Parent vnode of the directory to be rmdir'ed
+ *  @param vp The vnode to be rmdir'ed
+ *  @param cnp A componentname containing the name of the file to be rmdir'ed.  May be NULL.
+ *  @param reserved Pass NULL
+ *  @return returns zero if the operation is allowed, non-zero indicates the rmdir is not authorized.
+ */
+int     vn_authorize_rmdir(vnode_t dvp, vnode_t vp, struct componentname *cnp, vfs_context_t ctx, void *reserved);
+
 /*!
  *  @function vn_getpath_fsenter
  *  @abstract Attempt to get a vnode's path, willing to enter the filesystem.
@@ -1751,6 +1773,7 @@ int     vn_getpath_ext(struct vnode *vp, struct vnode *dvp, char *pathbuf, int *
 #define VN_GETPATH_FSENTER              0x0001 /* Can re-enter filesystem */
 #define VN_GETPATH_NO_FIRMLINK          0x0002
 #define VN_GETPATH_VOLUME_RELATIVE      0x0004 /* also implies VN_GETPATH_NO_FIRMLINK */
+#define VN_GETPATH_NO_PROCROOT          0x0008 /* Give the non chrooted path for a process */
 
 #endif /* KERNEL_PRIVATE */
 
@@ -2379,6 +2402,7 @@ void vnode_clearnoflush(vnode_t);
 #define BUILDPATH_CHECK_MOVED     0x4 /* Return EAGAIN if the parent hierarchy is modified */
 #define BUILDPATH_VOLUME_RELATIVE 0x8 /* Return path relative to the nearest mount point */
 #define BUILDPATH_NO_FIRMLINK     0x10 /* Return non-firmlinked path */
+#define BUILDPATH_NO_PROCROOT     0x20 /* Return path relative to system root, not the process root */
 
 int     build_path(vnode_t first_vp, char *buff, int buflen, int *outlen, int flags, vfs_context_t ctx);