+int mdt_open_by_fid_lock(struct mdt_thread_info *info, struct ldlm_reply *rep,
+ struct mdt_lock_handle *lhc)
+{
+ const struct lu_env *env = info->mti_env;
+ struct mdt_device *mdt = info->mti_mdt;
+ __u32 flags = info->mti_spec.sp_cr_flags;
+ struct mdt_reint_record *rr = &info->mti_rr;
+ struct md_attr *ma = &info->mti_attr;
+ struct mdt_object *parent= NULL;
+ struct mdt_object *o;
+ int rc;
+ ldlm_mode_t lm;
+ ENTRY;
+
+ if (md_should_create(flags) && !(flags & MDS_OPEN_HAS_EA)) {
+ if (!lu_fid_eq(rr->rr_fid1, rr->rr_fid2)) {
+ parent = mdt_object_find(env, mdt, rr->rr_fid1);
+ if (IS_ERR(parent)) {
+ CDEBUG(D_INODE, "Fail to find parent "DFID
+ " for anonymous created %ld, try to"
+ " use server-side parent.\n",
+ PFID(rr->rr_fid1), PTR_ERR(parent));
+ parent = NULL;
+ }
+ }
+ if (parent == NULL)
+ ma->ma_need |= MA_PFID;
+ }
+
+ o = mdt_object_find(env, mdt, rr->rr_fid2);
+ if (IS_ERR(o))
+ RETURN(rc = PTR_ERR(o));
+
+ rc = mdt_object_exists(o);
+ if (rc == 0) {
+ mdt_set_disposition(info, rep, (DISP_LOOKUP_EXECD |
+ DISP_LOOKUP_NEG));
+ GOTO(out, rc = -ENOENT);
+ } else if (rc < 0) {
+ CERROR("NFS remote open shouldn't happen.\n");
+ GOTO(out, rc);
+ }
+ mdt_set_disposition(info, rep, (DISP_IT_EXECD |
+ DISP_LOOKUP_EXECD));
+
+ if (flags & FMODE_WRITE)
+ lm = LCK_CW;
+ else if (flags & MDS_FMODE_EXEC)
+ lm = LCK_PR;
+ else
+ lm = LCK_CR;
+
+ mdt_lock_handle_init(lhc);
+ mdt_lock_reg_init(lhc, lm);
+ rc = mdt_object_lock(info, o, lhc,
+ MDS_INODELOCK_LOOKUP | MDS_INODELOCK_OPEN,
+ MDT_CROSS_LOCK);
+ if (rc)
+ GOTO(out, rc);
+
+ rc = mdt_attr_get_complex(info, o, ma);
+ if (rc)
+ GOTO(out, rc);
+
+ if (ma->ma_valid & MA_PFID) {
+ parent = mdt_object_find(env, mdt, &ma->ma_pfid);
+ if (IS_ERR(parent)) {
+ CDEBUG(D_INODE, "Fail to find parent "DFID
+ " for anonymous created %ld, try to"
+ " use system default.\n",
+ PFID(&ma->ma_pfid), PTR_ERR(parent));
+ parent = NULL;
+ }
+ }
+
+ rc = mdt_finish_open(info, parent, o, flags, 0, rep);
+
+ if (!(flags & MDS_OPEN_LOCK) || rc)
+ mdt_object_unlock(info, o, lhc, 1);
+
+ if (!rc) {
+ mdt_set_disposition(info, rep, DISP_LOOKUP_POS);
+ if (flags & MDS_OPEN_LOCK)
+ mdt_set_disposition(info, rep, DISP_OPEN_LOCK);
+ }
+
+ GOTO(out, rc);
+out:
+ mdt_object_put(env, o);
+ if (parent != NULL)
+ mdt_object_put(env, parent);
+ return rc;
+}
+