Added the support to get the revision count for the onion file into the h5dump. (#1726)

* Removes unused definitions from module headers (#1624)

* Fix these Doxygen warnings #1581 (#1589)

* Fixes a typo in H5.c (#1639)

* free MPI_Group/MPI_Comm/MPI_Datatype objects (#1638)

* free MPI_Group/MPI_Comm/MPI_Datatype objects

* fix clang-format style

* Adds build and license shields to README.md (#1641)

* First stab at a Github status bar

* Adds a .tokeignore file for counting lines of code accurately

* Yanks lines of code calculation since it wildly overcounts

* not depend on doIO to free an MPI_Comm object (#1642)

* free MPI datatypes previously created (#1637)

* Retrieve MPI-IO hints used by MPI library after file open (#1636)

H5Pget_fapl_mpio() should return an MPI info object containing all the
MPI-IO hints used by the MPI library underneath, after the file is
opened. Some hints, such as cb_nodes (number of I/O aggregators), are
useful for HDF5 applications and I/O libraries built on top of HDF5.

* OESS-168: Remove clang warnings. (#1309)

* OESS-168: Remove clang warnings.

* OESS-168: Address @lrknox review.

* OESS-168: Remove clang warnings. (#1376)

* Added the support to get the revision count for the onion file into the h5dump.

* Committing clang-format changes

* Changed the function from H5FDget_onion_revision_count to H5FDonion_get_revision_count for better name.

* Fixed compiler warnings.

Co-authored-by: Dana Robinson <43805+derobins@users.noreply.github.com>
Co-authored-by: Allen Byrne <50328838+byrnHDF@users.noreply.github.com>
Co-authored-by: Wei-keng Liao <wkliao@users.noreply.github.com>
Co-authored-by: H. Joe Lee <hyoklee@hdfgroup.org>
Co-authored-by: github-actions <41898282+github-actions[bot]@users.noreply.github.com>

2 files changed, 31 insertions, 15 deletions

diff --git a/tools/src/h5dump/h5dump.c b/tools/src/h5dump/h5dump.c
index 29e2158..a82dbb2 100644
--- a/tools/src/h5dump/h5dump.c
+++ b/tools/src/h5dump/h5dump.c
@@ -23,8 +23,10 @@ static hbool_t     doxml_g       = FALSE;
 static hbool_t     useschema_g   = TRUE;
 static const char *xml_dtd_uri_g = NULL;
 
-static hbool_t            use_custom_vol_g = FALSE;
-static hbool_t            use_custom_vfd_g = FALSE;
+static hbool_t use_custom_vol_g         = FALSE;
+static hbool_t use_custom_vfd_g         = FALSE;
+static hbool_t get_onion_revision_count = FALSE;
+
 static h5tools_vol_info_t vol_info_g;
 static h5tools_vfd_info_t vfd_info_g;
 
@@ -1315,16 +1317,18 @@ end_collect:
     /* Copy the VFD driver info for the input file if it's the onion file */
     if (vfd_info_g.u.name) {
         if (!HDstrcmp(vfd_info_g.u.name, "onion")) {
-            if (vfd_info_g.info)
-                onion_fa_g.revision_num = HDatoi((char *)(vfd_info_g.info));
-            else
-                onion_fa_g.revision_num = 0;
+            onion_fa_g.revision_num = 0;
 
-            HDprintf("Using revision %" PRIu64 "\n", onion_fa_g.revision_num);
+            if (vfd_info_g.info) {
+                if (!HDstrcmp(vfd_info_g.info, "revision_count"))
+                    get_onion_revision_count = TRUE;
+                else {
+                    onion_fa_g.revision_num = HDstrtoull((const char *)(vfd_info_g.info), NULL, 0);
+                    HDprintf("Using revision %" PRIu64 "\n", onion_fa_g.revision_num);
+                }
+            }
 
-            /* Need to free this memory */
-            vfd_info_g.info = HDmalloc(sizeof(H5FD_onion_fapl_info_t));
-            HDmemcpy(vfd_info_g.info, &onion_fa_g, sizeof(H5FD_onion_fapl_info_t));
+            vfd_info_g.info = &onion_fa_g;
         }
     } /* driver name defined */
 
@@ -1447,7 +1451,21 @@ main(int argc, char *argv[])
     while (H5_optind < argc) {
         fname = HDstrdup(argv[H5_optind++]);
 
-        fid = h5tools_fopen(fname, H5F_ACC_RDONLY, fapl_id, (fapl_id != H5P_DEFAULT), NULL, 0);
+        /* A short cut to get the revision count of an onion file without opening the file */
+        if (get_onion_revision_count && H5FD_ONION == H5Pget_driver(fapl_id)) {
+            size_t revision_count = 0;
+
+            if (H5FDonion_get_revision_count(fname, fapl_id, &revision_count) < 0) {
+                error_msg("unable to create FAPL for file access\n");
+                h5tools_setstatus(EXIT_FAILURE);
+                goto done;
+            }
+
+            printf("The number of revisions for the onion file is %lu\n", revision_count);
+            goto done;
+        }
+        else
+            fid = h5tools_fopen(fname, H5F_ACC_RDONLY, fapl_id, (fapl_id != H5P_DEFAULT), NULL, 0);
 
         if (fid < 0) {
             error_msg("unable to open file \"%s\"\n", fname);
@@ -1635,10 +1653,6 @@ done:
     /* Free tables for objects */
     table_list_free();
 
-    /* Free the VFD info */
-    if (vfd_info_g.info)
-        HDfree(vfd_info_g.info);
-
     if (fapl_id != H5P_DEFAULT && 0 < H5Pclose(fapl_id)) {
         error_msg("Can't close fapl entry\n");
         h5tools_setstatus(EXIT_FAILURE);
diff --git a/tools/test/h5dump/testh5dump.sh.in b/tools/test/h5dump/testh5dump.sh.in
index a9d7b6a..ce7f643 100644
--- a/tools/test/h5dump/testh5dump.sh.in
+++ b/tools/test/h5dump/testh5dump.sh.in
@@ -381,6 +381,7 @@ $SRC_H5DUMP_TESTFILES/err_attr_dspace.ddl
 $SRC_H5DUMP_TESTFILES/tst_onion_objs.ddl
 $SRC_H5DUMP_TESTFILES/tst_onion_dset_ext.ddl
 $SRC_H5DUMP_TESTFILES/tst_onion_dset_1d.ddl
+$SRC_H5DUMP_TESTFILES/tst_onion_revision_count.ddl
 "
 
 LIST_ERROR_TEST_FILES="
@@ -1499,6 +1500,7 @@ TOOLTEST_FAIL tCVE_2018_11206_fill_new.h5
 TOOLTEST tst_onion_objs.ddl --enable-error-stack --vfd-name onion --vfd-info 3 tst_onion_objs.h5
 TOOLTEST tst_onion_dset_ext.ddl --enable-error-stack --vfd-name onion --vfd-info 1 tst_onion_dset_ext.h5
 TOOLTEST tst_onion_dset_1d.ddl --enable-error-stack --vfd-name onion --vfd-info 1 tst_onion_dset_1d.h5
+TOOLTEST tst_onion_revision_count.ddl --enable-error-stack --vfd-name onion --vfd-info revision_count tst_onion_objs.h5
 
 # Clean up temporary files/directories
 CLEAN_TESTFILES_AND_TESTDIR