VFD plugins (#602)

* Implement support for loading of Virtual File Drivers as plugins

Fix plugin caching for VOL connector and VFD plugins

Fix plugin iteration to skip paths that can't be opened

* Enable dynamic loading of VFDs with HDF5_DRIVER environment variable

* Temporarily disable error reporting during H5F_open double file open

* Default to using HDstat in h5_get_file_size for unknown VFDs

* Use macros for some environment variables that HDF5 interprets

* Update "null" and "ctl testing" VFDs

1 files changed, 72 insertions, 36 deletions

diff --git a/test/tattr.c b/test/tattr.c
index 756e139..b807bce 100644
--- a/test/tattr.c
+++ b/test/tattr.c
@@ -2274,9 +2274,11 @@ test_attr_dense_create(hid_t fcpl, hid_t fapl)
     ret = H5Fclose(fid);
     CHECK(ret, FAIL, "H5Fclose");
 
-    /* Check size of file */
-    filesize = h5_get_file_size(FILENAME, fapl);
-    VERIFY(filesize, empty_filesize, "h5_get_file_size");
+    if (h5_using_default_driver(NULL)) {
+        /* Check size of file */
+        filesize = h5_get_file_size(FILENAME, fapl);
+        VERIFY(filesize, empty_filesize, "h5_get_file_size");
+    }
 } /* test_attr_dense_create() */
 
 /****************************************************************
@@ -2418,9 +2420,11 @@ test_attr_dense_open(hid_t fcpl, hid_t fapl)
     ret = H5Fclose(fid);
     CHECK(ret, FAIL, "H5Fclose");
 
-    /* Check size of file */
-    filesize = h5_get_file_size(FILENAME, fapl);
-    VERIFY(filesize, empty_filesize, "h5_get_file_size");
+    if (h5_using_default_driver(NULL)) {
+        /* Check size of file */
+        filesize = h5_get_file_size(FILENAME, fapl);
+        VERIFY(filesize, empty_filesize, "h5_get_file_size");
+    }
 } /* test_attr_dense_open() */
 
 /****************************************************************
@@ -2448,6 +2452,10 @@ test_attr_dense_delete(hid_t fcpl, hid_t fapl)
     int            use_min_dset_oh = (dcpl_g != H5P_DEFAULT);
     herr_t         ret; /* Generic return value        */
 
+    /* Only run this test for sec2/default driver */
+    if (!h5_using_default_driver(NULL))
+        return;
+
     /* Output message about test being performed */
     MESSAGE(5, ("Testing Deleting Attributes in Dense Storage\n"));
 
@@ -2611,9 +2619,11 @@ test_attr_dense_delete(hid_t fcpl, hid_t fapl)
     ret = H5Fclose(fid);
     CHECK(ret, FAIL, "H5Fclose");
 
-    /* Check size of file */
-    filesize = h5_get_file_size(FILENAME, fapl);
-    VERIFY(filesize, empty_filesize, "h5_get_file_size");
+    if (h5_using_default_driver(NULL)) {
+        /* Check size of file */
+        filesize = h5_get_file_size(FILENAME, fapl);
+        VERIFY(filesize, empty_filesize, "h5_get_file_size");
+    }
 } /* test_attr_dense_delete() */
 
 /****************************************************************
@@ -2643,6 +2653,10 @@ test_attr_dense_rename(hid_t fcpl, hid_t fapl)
     unsigned       use_corder; /* Track creation order or not */
     herr_t         ret;        /* Generic return value        */
 
+    /* Only run this test for sec2/default driver */
+    if (!h5_using_default_driver(NULL))
+        return;
+
     /* Output message about test being performed */
     MESSAGE(5, ("Testing Renaming Attributes in Dense Storage\n"));
 
@@ -2802,9 +2816,11 @@ test_attr_dense_rename(hid_t fcpl, hid_t fapl)
     ret = H5Fclose(fid);
     CHECK(ret, FAIL, "H5Fclose");
 
-    /* Check size of file */
-    filesize = h5_get_file_size(FILENAME, fapl);
-    VERIFY(filesize, empty_filesize, "h5_get_file_size");
+    if (h5_using_default_driver(NULL)) {
+        /* Check size of file */
+        filesize = h5_get_file_size(FILENAME, fapl);
+        VERIFY(filesize, empty_filesize, "h5_get_file_size");
+    }
 } /* test_attr_dense_rename() */
 
 /****************************************************************
@@ -2833,6 +2849,10 @@ test_attr_dense_unlink(hid_t fcpl, hid_t fapl)
     int            use_min_dset_oh = (dcpl_g != H5P_DEFAULT);
     herr_t         ret; /* Generic return value        */
 
+    /* Only run this test for sec2/default driver */
+    if (!h5_using_default_driver(NULL))
+        return;
+
     /* Output message about test being performed */
     MESSAGE(5, ("Testing Unlinking Object with Attributes in Dense Storage\n"));
 
@@ -2945,9 +2965,11 @@ test_attr_dense_unlink(hid_t fcpl, hid_t fapl)
     ret = H5Fclose(fid);
     CHECK(ret, FAIL, "H5Fclose");
 
-    /* Check size of file */
-    filesize = h5_get_file_size(FILENAME, fapl);
-    VERIFY(filesize, empty_filesize, "h5_get_file_size");
+    if (h5_using_default_driver(NULL)) {
+        /* Check size of file */
+        filesize = h5_get_file_size(FILENAME, fapl);
+        VERIFY(filesize, empty_filesize, "h5_get_file_size");
+    }
 } /* test_attr_dense_unlink() */
 
 /****************************************************************
@@ -3109,9 +3131,11 @@ test_attr_dense_limits(hid_t fcpl, hid_t fapl)
     ret = H5Fclose(fid);
     CHECK(ret, FAIL, "H5Fclose");
 
-    /* Check size of file */
-    filesize = h5_get_file_size(FILENAME, fapl);
-    VERIFY(filesize, empty_filesize, "h5_get_file_size");
+    if (h5_using_default_driver(NULL)) {
+        /* Check size of file */
+        filesize = h5_get_file_size(FILENAME, fapl);
+        VERIFY(filesize, empty_filesize, "h5_get_file_size");
+    }
 } /* test_attr_dense_limits() */
 
 /****************************************************************
@@ -3896,9 +3920,11 @@ test_attr_big(hid_t fcpl, hid_t fapl)
     ret = H5Fclose(fid);
     CHECK(ret, FAIL, "H5Fclose");
 
-    /* Check size of file */
-    filesize = h5_get_file_size(FILENAME, fapl);
-    VERIFY(filesize, empty_filesize, "h5_get_file_size");
+    if (h5_using_default_driver(NULL)) {
+        /* Check size of file */
+        filesize = h5_get_file_size(FILENAME, fapl);
+        VERIFY(filesize, empty_filesize, "h5_get_file_size");
+    }
 } /* test_attr_big() */
 
 /****************************************************************
@@ -4105,9 +4131,11 @@ test_attr_null_space(hid_t fcpl, hid_t fapl)
     ret = H5Sclose(null_sid);
     CHECK(ret, FAIL, "H5Sclose");
 
-    /* Check size of file */
-    filesize = h5_get_file_size(FILENAME, fapl);
-    VERIFY(filesize, empty_filesize, "h5_get_file_size");
+    if (h5_using_default_driver(NULL)) {
+        /* Check size of file */
+        filesize = h5_get_file_size(FILENAME, fapl);
+        VERIFY(filesize, empty_filesize, "h5_get_file_size");
+    }
 } /* test_attr_null_space() */
 
 /****************************************************************
@@ -8705,9 +8733,11 @@ test_attr_shared_write(hid_t fcpl, hid_t fapl)
         ret = H5Fclose(fid);
         CHECK(ret, FAIL, "H5Fclose");
 
-        /* Check size of file */
-        filesize = h5_get_file_size(FILENAME, fapl);
-        VERIFY(filesize, empty_filesize, "h5_get_file_size");
+        if (h5_using_default_driver(NULL)) {
+            /* Check size of file */
+            filesize = h5_get_file_size(FILENAME, fapl);
+            VERIFY(filesize, empty_filesize, "h5_get_file_size");
+        }
     } /* end for */
 
     /* Close dataspaces */
@@ -9151,9 +9181,11 @@ test_attr_shared_rename(hid_t fcpl, hid_t fapl)
         ret = H5Fclose(fid);
         CHECK(ret, FAIL, "H5Fclose");
 
-        /* Check size of file */
-        filesize = h5_get_file_size(FILENAME, fapl);
-        VERIFY(filesize, empty_filesize, "h5_get_file_size");
+        if (h5_using_default_driver(NULL)) {
+            /* Check size of file */
+            filesize = h5_get_file_size(FILENAME, fapl);
+            VERIFY(filesize, empty_filesize, "h5_get_file_size");
+        }
     } /* end for */
 
     /* Close dataspaces */
@@ -9521,9 +9553,11 @@ test_attr_shared_delete(hid_t fcpl, hid_t fapl)
         ret = H5Fclose(fid);
         CHECK(ret, FAIL, "H5Fclose");
 
-        /* Check size of file */
-        filesize = h5_get_file_size(FILENAME, fapl);
-        VERIFY(filesize, empty_filesize, "h5_get_file_size");
+        if (h5_using_default_driver(NULL)) {
+            /* Check size of file */
+            filesize = h5_get_file_size(FILENAME, fapl);
+            VERIFY(filesize, empty_filesize, "h5_get_file_size");
+        }
     } /* end for */
 
     /* Close dataspaces */
@@ -9878,9 +9912,11 @@ test_attr_shared_unlink(hid_t fcpl, hid_t fapl)
         ret = H5Fclose(fid);
         CHECK(ret, FAIL, "H5Fclose");
 
-        /* Check size of file */
-        filesize = h5_get_file_size(FILENAME, fapl);
-        VERIFY(filesize, empty_filesize, "h5_get_file_size");
+        if (h5_using_default_driver(NULL)) {
+            /* Check size of file */
+            filesize = h5_get_file_size(FILENAME, fapl);
+            VERIFY(filesize, empty_filesize, "h5_get_file_size");
+        }
     } /* end for */
 
     /* Close dataspaces */