LU-1081 fid: define special FID for BFL

[fs/lustre-release.git] / lustre / fid / fid_lib.c

diff --git a/lustre/fid/fid_lib.c b/lustre/fid/fid_lib.c
index 3eaeeb1..148b372 100644 (file)
--- a/lustre/fid/fid_lib.c
+++ b/lustre/fid/fid_lib.c
@@ -16,8 +16,8 @@
  * in the LICENSE file that accompanied this code).
  *
  * You should have received a copy of the GNU General Public License
- * version 2 along with this program; If not, see [sun.com URL with a
- * copy of GPLv2].
+ * version 2 along with this program; If not, see
+ * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
  *
  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
  * CA 95054 USA or visit www.sun.com if you need additional information or
@@ -26,7 +26,7 @@
  * GPL HEADER END
  */
 /*
- * Copyright  2008 Sun Microsystems, Inc. All rights reserved
+ * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
  * Use is subject to license terms.
  */
 /*
@@ -69,69 +69,36 @@
  * </pre>
  *
  * The first 0x400 sequences of normal FID are reserved for special purpose.
+ * FID_SEQ_START + 1 is for local file id generation.
+ * FID_SEQ_START + 2 is for .lustre directory and its objects
  */
-const struct lu_range LUSTRE_SEQ_SPACE_RANGE = {
-        FID_SEQ_START + 0x400ULL,
+const struct lu_seq_range LUSTRE_SEQ_SPACE_RANGE = {
+        FID_SEQ_NORMAL,
         (__u64)~0ULL
 };
 EXPORT_SYMBOL(LUSTRE_SEQ_SPACE_RANGE);
 
 /* Zero range, used for init and other purposes. */
-const struct lu_range LUSTRE_SEQ_ZERO_RANGE = {
+const struct lu_seq_range LUSTRE_SEQ_ZERO_RANGE = {
         0,
         0
 };
 EXPORT_SYMBOL(LUSTRE_SEQ_ZERO_RANGE);
 
 /* Lustre Big Fs Lock fid. */
-const struct lu_fid LUSTRE_BFL_FID = { .f_seq = 0x0000000000000003,
-                                       .f_oid = 0x0000000000000001,
+const struct lu_fid LUSTRE_BFL_FID = { .f_seq = FID_SEQ_SPECIAL,
+                                       .f_oid = FID_OID_SPECIAL_BFL,
                                        .f_ver = 0x0000000000000000 };
 EXPORT_SYMBOL(LUSTRE_BFL_FID);
 
-void range_cpu_to_le(struct lu_range *dst, const struct lu_range *src)
-{
-        /* check that all fields are converted */
-        CLASSERT(sizeof *src ==
-                 sizeof src->lr_start +
-                 sizeof src->lr_end);
-        dst->lr_start = cpu_to_le64(src->lr_start);
-        dst->lr_end = cpu_to_le64(src->lr_end);
-}
-EXPORT_SYMBOL(range_cpu_to_le);
+/** Special fid for ".lustre" directory */
+const struct lu_fid LU_DOT_LUSTRE_FID = { .f_seq = FID_SEQ_DOT_LUSTRE,
+                                          .f_oid = FID_OID_DOT_LUSTRE,
+                                          .f_ver = 0x0000000000000000 };
+EXPORT_SYMBOL(LU_DOT_LUSTRE_FID);
 
-void range_le_to_cpu(struct lu_range *dst, const struct lu_range *src)
-{
-        /* check that all fields are converted */
-        CLASSERT(sizeof *src ==
-                 sizeof src->lr_start +
-                 sizeof src->lr_end);
-        dst->lr_start = le64_to_cpu(src->lr_start);
-        dst->lr_end = le64_to_cpu(src->lr_end);
-}
-EXPORT_SYMBOL(range_le_to_cpu);
-
-#ifdef __KERNEL__
-void range_cpu_to_be(struct lu_range *dst, const struct lu_range *src)
-{
-        /* check that all fields are converted */
-        CLASSERT(sizeof *src ==
-                 sizeof src->lr_start +
-                 sizeof src->lr_end);
-        dst->lr_start = cpu_to_be64(src->lr_start);
-        dst->lr_end = cpu_to_be64(src->lr_end);
-}
-EXPORT_SYMBOL(range_cpu_to_be);
-
-void range_be_to_cpu(struct lu_range *dst, const struct lu_range *src)
-{
-        /* check that all fields are converted */
-        CLASSERT(sizeof *src ==
-                 sizeof src->lr_start +
-                 sizeof src->lr_end);
-        dst->lr_start = be64_to_cpu(src->lr_start);
-        dst->lr_end = be64_to_cpu(src->lr_end);
-}
-EXPORT_SYMBOL(range_be_to_cpu);
-
-#endif
+/** Special fid for "fid" special object in .lustre */
+const struct lu_fid LU_OBF_FID = { .f_seq = FID_SEQ_DOT_LUSTRE,
+                                   .f_oid = FID_OID_DOT_LUSTRE_OBF,
+                                   .f_ver = 0x0000000000000000 };
+EXPORT_SYMBOL(LU_OBF_FID);