xnu-1486.2.11.tar.gz

[apple/xnu.git] / bsd / hfs / hfs_catalog.h

diff --git a/bsd/hfs/hfs_catalog.h b/bsd/hfs/hfs_catalog.h
index 2eaf3811f447b6f7747c209a896ecb852296105d..6c1eaa1303d46b4fe0616df1c04b3d787a41b4ab 100644 (file)
--- a/bsd/hfs/hfs_catalog.h
+++ b/bsd/hfs/hfs_catalog.h
@@ -63,9 +63,18 @@ struct cat_desc {
        const u_int8_t * cd_nameptr; /* pointer to cnode name */
 };
 
        const u_int8_t * cd_nameptr; /* pointer to cnode name */
 };
 

-/* cd_flags */
+/* cd_flags 
+ *
+ * CD_EOF is used by hfs_vnop_readdir / cat_getdirentries to indicate EOF was
+ * encountered during a directory enumeration.  When this flag is observed
+ * on the next call to hfs_vnop_readdir it tells the caller that there's no
+ * need to descend into the catalog as EOF was encountered during the last call.
+ * This flag should only be set on the descriptor embedded in the directoryhint. 
+ */
+

 #define        CD_HASBUF       0x01    /* allocated filename buffer */
 #define CD_DECOMPOSED  0x02    /* name is fully decomposed */
 #define        CD_HASBUF       0x01    /* allocated filename buffer */
 #define CD_DECOMPOSED  0x02    /* name is fully decomposed */

+#define CD_EOF         0x04    /* see above */

 #define        CD_ISMETA       0x40    /* describes a metadata file */
 #define        CD_ISDIR        0x80    /* describes a directory */
 
 #define        CD_ISMETA       0x40    /* describes a metadata file */
 #define        CD_ISDIR        0x80    /* describes a directory */