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authorQuincey Koziol <koziol@hdfgroup.org>2000-10-17 20:46:57 (GMT)
committerQuincey Koziol <koziol@hdfgroup.org>2000-10-17 20:46:57 (GMT)
commit2011215517e50ae231f89c9d24ce826d76315e00 (patch)
tree1a1f842218cb64d9cf21eaee26437c64676ad213 /test/trefer.c
parentbfd52032e36f265c3a2829595a29f480903e9b30 (diff)
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[svn-r2689] Purpose:
Bug fix. Description: Previously, it has been possible to dereference deleted objects in a file. Obviously, this is incorrect and could cause all sorts of problems if the object being dereferenced had been partially over-written with other information. - This is documented in Bug #493. Solution: Check the link count for objects being dereferenced and don't allow any objects with link counts of zero to be dereferenced. This fixes bug #493. Platforms tested: FreeBSD 4.1.1 (hawkwind)
Diffstat (limited to 'test/trefer.c')
-rw-r--r--test/trefer.c98
1 files changed, 97 insertions, 1 deletions
diff --git a/test/trefer.c b/test/trefer.c
index 6715bd6..24f4bdf 100644
--- a/test/trefer.c
+++ b/test/trefer.c
@@ -30,6 +30,7 @@ static char RcsId[] = "$Revision$";
#define FILE1 "trefer1.h5"
#define FILE2 "trefer2.h5"
+#define FILE3 "trefer3.h5"
/* 1-D dataset with fixed dimensions */
#define SPACE1_NAME "Space1"
@@ -537,6 +538,100 @@ test_reference_region(void)
/****************************************************************
**
+** test_reference_obj_deleted(): Test H5R (reference) object reference code.
+** Tests for correct failures for deleted and non-existent objects
+**
+****************************************************************/
+static void
+test_reference_obj_deleted(void)
+{
+ hid_t fid1; /* HDF5 File IDs */
+ hid_t dataset, /* Dataset ID */
+ dset2; /* Dereferenced dataset ID */
+ hid_t sid1; /* Dataspace ID */
+ hobj_ref_t oref; /* Object Reference to test */
+ herr_t ret; /* Generic return value */
+
+ /* Create file */
+ fid1 = H5Fcreate(FILE3, H5F_ACC_TRUNC, H5P_DEFAULT, H5P_DEFAULT);
+ CHECK(fid1, FAIL, "H5Fcreate");
+
+ /* Create scalar dataspace for datasets */
+ sid1 = H5Screate_simple(0, NULL, NULL);
+ CHECK(sid1, FAIL, "H5Screate_simple");
+
+ /* Create a dataset to reference (deleted later) */
+ dataset=H5Dcreate(fid1,"Dataset1",H5T_NATIVE_INT,sid1,H5P_DEFAULT);
+ CHECK(dataset, FAIL, "H5Dcreate");
+
+ /* Close Dataset */
+ ret = H5Dclose(dataset);
+ CHECK(ret, FAIL, "H5Dclose");
+
+ /* Create a dataset */
+ dataset=H5Dcreate(fid1,"Dataset2",H5T_STD_REF_OBJ,sid1,H5P_DEFAULT);
+ CHECK(dataset, FAIL, "H5Dcreate");
+
+ /* Create reference to dataset */
+ ret = H5Rcreate(&oref,fid1,"/Dataset1",H5R_OBJECT,-1);
+ CHECK(ret, FAIL, "H5Rcreate");
+ ret = H5Rget_object_type(dataset,&oref);
+ VERIFY(ret, H5G_DATASET, "H5Rget_object_type");
+
+ /* Write selection to disk */
+ ret=H5Dwrite(dataset,H5T_STD_REF_OBJ,H5S_ALL,H5S_ALL,H5P_DEFAULT,&oref);
+ CHECK(ret, FAIL, "H5Dwrite");
+
+ /* Close Dataset */
+ ret = H5Dclose(dataset);
+ CHECK(ret, FAIL, "H5Dclose");
+
+ /* Delete referenced dataset */
+ ret = H5Gunlink(fid1,"/Dataset1");
+ CHECK(ret, FAIL, "H5Gunlink");
+
+ /* Close disk dataspace */
+ ret = H5Sclose(sid1);
+ CHECK(ret, FAIL, "H5Sclose");
+
+ /* Close file */
+ ret = H5Fclose(fid1);
+ CHECK(ret, FAIL, "H5Fclose");
+
+ /* Re-open the file */
+ fid1 = H5Fopen(FILE3, H5F_ACC_RDWR, H5P_DEFAULT);
+ CHECK(fid1, FAIL, "H5Fopen");
+
+ /* Open the dataset */
+ dataset=H5Dopen(fid1,"/Dataset2");
+ CHECK(ret, FAIL, "H5Dcreate");
+
+ /* Read selection from disk */
+ memset(&oref,0,sizeof(hobj_ref_t));
+ ret=H5Dread(dataset,H5T_STD_REF_OBJ,H5S_ALL,H5S_ALL,H5P_DEFAULT,&oref);
+ CHECK(ret, FAIL, "H5Dread");
+
+ /* Open deleted dataset object */
+ dset2 = H5Rdereference(dataset,H5R_OBJECT,&oref);
+ VERIFY(dset2, FAIL, "H5Rdereference");
+
+ /* Open nonsense reference */
+ memset(&oref,0,sizeof(hobj_ref_t));
+ dset2 = H5Rdereference(dataset,H5R_OBJECT,&oref);
+ VERIFY(dset2, FAIL, "H5Rdereference");
+
+ /* Close Dataset */
+ ret = H5Dclose(dataset);
+ CHECK(ret, FAIL, "H5Dclose");
+
+ /* Close file */
+ ret = H5Fclose(fid1);
+ CHECK(ret, FAIL, "H5Fclose");
+
+} /* test_reference_obj_deleted() */
+
+/****************************************************************
+**
** test_reference(): Main H5R reference testing routine.
**
****************************************************************/
@@ -546,9 +641,9 @@ test_reference(void)
/* Output message about test being performed */
MESSAGE(5, ("Testing References\n"));
- /* These next tests use the same file */
test_reference_obj(); /* Test basic H5R object reference code */
test_reference_region(); /* Test basic H5R dataset region reference code */
+ test_reference_obj_deleted(); /* Test H5R object reference code for deleted objects */
} /* test_reference() */
@@ -572,5 +667,6 @@ cleanup_reference(void)
{
remove(FILE1);
remove(FILE2);
+ remove(FILE3);
}