LU-12511 utils: Move utilies specific values out of Lustre UAPI headers

[fs/lustre-release.git] / lustre / utils / liblustreapi_layout.c

diff --git a/lustre/utils/liblustreapi_layout.c b/lustre/utils/liblustreapi_layout.c
index c9525fe..87ed8c8 100644 (file)
--- a/lustre/utils/liblustreapi_layout.c
+++ b/lustre/utils/liblustreapi_layout.c
@@ -549,8 +549,12 @@ struct llapi_layout *llapi_layout_get_by_xattr(void *lov_xattr,
                else if (v1->lmm_pattern == (LOV_PATTERN_RAID0 |
                                         LOV_PATTERN_OVERSTRIPING))
                        comp->llc_pattern = LLAPI_LAYOUT_OVERSTRIPING;
+               else if (v1->lmm_pattern == LOV_PATTERN_MDT)
+                       comp->llc_pattern = LLAPI_LAYOUT_MDT;
                else
-                       /* Lustre only supports RAID0 for now. */
+                       /* Lustre only supports RAID0, overstripping
+                        * and DoM for now.
+                        */
                        comp->llc_pattern = v1->lmm_pattern;
 
                if (v1->lmm_stripe_size == 0)
@@ -2698,6 +2702,71 @@ error:
 }
 
 /**
+ * Get the last initialized component
+ *
+ * \param[in] layout   component layout list.
+ *
+ * \retval 0           found
+ * \retval -EINVAL     not found
+ * \retval -EISDIR     directory layout
+ */
+int llapi_layout_get_last_init_comp(struct llapi_layout *layout)
+{
+       struct llapi_layout_comp *comp = NULL, *head = NULL;
+
+       if (!layout->llot_is_composite)
+               return 0;
+
+       head = list_entry(layout->llot_comp_list.next, typeof(*comp), llc_list);
+       if (head == NULL)
+               return -EINVAL;
+       if (head->llc_id == 0 && !(head->llc_flags & LCME_FL_INIT))
+               /* a directory */
+               return -EISDIR;
+
+       /* traverse the components from the tail to find the last init one */
+       comp = list_entry(layout->llot_comp_list.prev, typeof(*comp), llc_list);
+       while (comp != head) {
+               if (comp->llc_flags & LCME_FL_INIT)
+                       break;
+               comp = list_entry(comp->llc_list.prev, typeof(*comp), llc_list);
+       }
+
+       layout->llot_cur_comp = comp;
+
+       return comp->llc_flags & LCME_FL_INIT ? 0 : -EINVAL;
+}
+
+/**
+ * Interit stripe info from the file's component to the mirror
+ *
+ * \param[in] layout   file component layout list.
+ * \param[in] layout   mirro component layout list.
+ *
+ * \retval 0           on success
+ * \retval -EINVAL     on error
+ */
+int llapi_layout_mirror_inherit(struct llapi_layout *f_layout,
+                               struct llapi_layout *m_layout)
+{
+       struct llapi_layout_comp *m_comp = NULL;
+       struct llapi_layout_comp *f_comp = NULL;
+       int rc = 0;
+
+       f_comp = __llapi_layout_cur_comp(f_layout);
+       if (f_comp == NULL)
+               return -EINVAL;
+       m_comp = __llapi_layout_cur_comp(m_layout);
+       if (m_comp == NULL)
+               return -EINVAL;
+
+       m_comp->llc_stripe_size = f_comp->llc_stripe_size;
+       m_comp->llc_stripe_count = f_comp->llc_stripe_count;
+
+       return rc;
+}
+
+/**
  * Find all stale components.
  *
  * \param[in] layout           component layout list.
@@ -3041,6 +3110,10 @@ struct llapi_layout_sanity_args {
        int lsa_rc;
 };
 
+/* The component flags can be set by users at creation/modification time. */
+#define LCME_USER_COMP_FLAGS   (LCME_FL_PREF_RW | LCME_FL_NOSYNC | \
+                                LCME_FL_EXTENSION)
+
 static int llapi_layout_sanity_cb(struct llapi_layout *layout,
                                  void *arg)
 {
@@ -3357,7 +3430,9 @@ int llapi_get_lum_file_fd(int dir_fd, const char *fname, __u64 *valid,
        if (rc)
                return rc;
 
-       *valid = lmd->lmd_flags;
+       if (valid)
+               *valid = lmd->lmd_flags;
+
        if (statx)
                memcpy(statx, &lmd->lmd_stx, sizeof(*statx));