LU-4017 quota: add project inherit attributes

[fs/lustre-release.git] / lustre / mdd / mdd_dir.c

diff --git a/lustre/mdd/mdd_dir.c b/lustre/mdd/mdd_dir.c
index b37c795..07fe079 100644 (file)
--- a/lustre/mdd/mdd_dir.c
+++ b/lustre/mdd/mdd_dir.c
@@ -1285,6 +1285,15 @@ static int mdd_link(const struct lu_env *env, struct md_object *tgt_obj,
        if (rc != 0)
                RETURN(rc);
 
+       /*
+        * If we are using project inheritance, we only allow hard link
+        * creation in our tree when the project IDs are the same;
+        * otherwise the tree quota mechanism could be circumvented.
+        */
+       if ((tattr->la_flags & LUSTRE_PROJINHERIT_FL) &&
+           (tattr->la_projid != cattr->la_projid))
+               RETURN(-EXDEV);
+
         handle = mdd_trans_create(env, mdd);
         if (IS_ERR(handle))
                 GOTO(out_pending, rc = PTR_ERR(handle));
@@ -1942,6 +1951,16 @@ static int mdd_create_sanity_check(const struct lu_env *env,
                }
        }
 
+       /* Inherit project ID from parent directory */
+       if (pattr->la_flags & LUSTRE_PROJINHERIT_FL) {
+               cattr->la_projid = pattr->la_projid;
+               if (S_ISDIR(cattr->la_mode)) {
+                       cattr->la_flags |= LUSTRE_PROJINHERIT_FL;
+                       cattr->la_valid |= LA_FLAGS;
+               }
+               cattr->la_valid |= LA_PROJID;
+       }
+
        rc = mdd_name_check(m, lname);
        if (rc < 0)
                RETURN(rc);
@@ -2581,6 +2600,17 @@ static int mdd_rename_sanity_check(const struct lu_env *env,
         * before mdd_rename and enable MDS_PERM_BYPASS. */
        LASSERT(sobj);
 
+       /*
+        * If we are using project inheritance, we only allow renames
+        * into our tree when the project IDs are the same; otherwise
+        * tree quota mechanism would be circumvented.
+        */
+       if (((tpattr->la_flags & LUSTRE_PROJINHERIT_FL) &&
+           tpattr->la_projid != cattr->la_projid) ||
+           ((pattr->la_flags & LUSTRE_PROJINHERIT_FL) &&
+           (pattr->la_projid != tpattr->la_projid)))
+               RETURN(-EXDEV);
+
        rc = mdd_may_delete(env, src_pobj, pattr, sobj, cattr, NULL, 1, 0);
        if (rc)
                RETURN(rc);