Adjust h5repack userblock option to allow reserve size

release_docs/RELEASE.txt

@@ -734,7 +734,10 @@ New Features
 
  Tools:
  ------
- -
+ - Allow h5repack to reserve space for a user block without a file
+
+ This is useful for users who want to reserve space
+ in the file for future use without requiring a file to copy.
 
 
  High-Level APIs:

tools/src/h5repack/h5repack.c

@@ -746,8 +746,12 @@ check_options(pack_opt_t *options)
  }
  }
 
- if (options->ublock_filename == NULL && options->ublock_size != 0)
- H5TOOLS_GOTO_ERROR((-1), "file name missing for user block");
+ if (options->ublock_filename == NULL && options->ublock_size != 0) {
+ if (options->verbose > 0) {
+ printf("Warning: user block file name missing. Reserving a size of %ld...\n",
+ options->ublock_size);
+ }
+ }
 
  /*------------------------------------------------------------------------
  * Verify alignment options; threshold is zero default but alignment not

tools/src/h5repack/h5repack_copy.c

@@ -368,7 +368,7 @@ copy_objects(const char *fnamein, const char *fnameout, pack_opt_t *options)
  *-------------------------------------------------------------------------
  */
 
- if (options->ublock_size > 0) {
+ if (options->ublock_filename != NULL && options->ublock_size > 0) {
  if (copy_user_block(options->ublock_filename, fnameout, options->ublock_size) < 0)
  H5TOOLS_GOTO_ERROR((-1), "Could not copy user block. Exiting...");
  }

tools/test/h5repack/CMakeTests.cmake

@@ -979,6 +979,51 @@
  )
  endmacro ()
 
+ macro (ADD_H5_VERIFY_USERBLOCK testname userblocksize testfile)
+ if (NOT HDF5_USING_ANALYSIS_TOOL)
+ add_test (
+ NAME H5REPACK_VERIFY_USERBLOCK-${testname}-clear-objects
+ COMMAND ${CMAKE_COMMAND} -E remove testfiles/out-${testname}.${testfile}
+ )
+ add_test (
+ NAME H5REPACK_VERIFY_USERBLOCK-${testname}
+ COMMAND ${CMAKE_CROSSCOMPILING_EMULATOR} $<TARGET_FILE:h5repack> --enable-error-stack ${ARGN} ${PROJECT_BINARY_DIR}/testfiles/${testfile} ${PROJECT_BINARY_DIR}/testfiles/out-${testname}.${testfile}
+ )
+ set_tests_properties (H5REPACK_VERIFY_USERBLOCK-${testname} PROPERTIES
+ DEPENDS H5REPACK_VERIFY_USERBLOCK-${testname}-clear-objects
+ )
+ if ("H5REPACK_VERIFY_USERBLOCK-${testname}" MATCHES "${HDF5_DISABLE_TESTS_REGEX}")
+ set_tests_properties (H5REPACK_VERIFY_USERBLOCK-${testname} PROPERTIES DISABLED true)
+ endif ()
+ add_test (
+ NAME H5REPACK_VERIFY_USERBLOCK-${testname}_DMP
+ COMMAND "${CMAKE_COMMAND}"
+ -D "TEST_EMULATOR=${CMAKE_CROSSCOMPILING_EMULATOR}"
+ -D "TEST_PROGRAM=$<TARGET_FILE:h5dump>"
+ -D "TEST_ARGS:STRING=-H;-B;out-${testname}.${testfile}"
+ -D "TEST_FOLDER=${PROJECT_BINARY_DIR}/testfiles"
+ -D "TEST_OUTPUT=${testfile}-${testname}-v.out"
+ -D "TEST_EXPECT=${resultcode}"
+ -D "TEST_FILTER:STRING=USERBLOCK_SIZE ${userblocksize}"
+ -D "TEST_REFERENCE=USERBLOCK_SIZE ${userblocksize}"
+ -P "${HDF_RESOURCES_DIR}/grepTest.cmake"
+ )
+ set_tests_properties (H5REPACK_VERIFY_USERBLOCK-${testname}_DMP PROPERTIES
+ DEPENDS H5REPACK_VERIFY_USERBLOCK-${testname}
+ )
+ if ("H5REPACK_VERIFY_USERBLOCK-${testname}_DMP" MATCHES "${HDF5_DISABLE_TESTS_REGEX}")
+ set_tests_properties (H5REPACK_VERIFY_USERBLOCK-${testname}_DMP PROPERTIES DISABLED true)
+ endif ()
+ add_test (
+ NAME H5REPACK_VERIFY_USERBLOCK-${testname}-clean-objects
+ COMMAND ${CMAKE_COMMAND} -E remove testfiles/out-${testname}.${testfile}
+ )
+ set_tests_properties (H5REPACK_VERIFY_USERBLOCK-${testname}-clean-objects PROPERTIES
+ DEPENDS H5REPACK_VERIFY_USERBLOCK-${testname}_DMP
+ )
+ endif ()
+ endmacro ()
+
  macro (ADD_H5_TEST_META testname testfile)
  # Remove any output file left over from previous test run
  add_test (
@@ -1719,6 +1764,9 @@
  set (arg ${FILE1} -u ${PROJECT_BINARY_DIR}/testfiles/ublock.bin -b 2048)
  ADD_H5_TEST (add_userblock "TEST" ${arg})
 
+# add a userblock reserve to file
+ ADD_H5_VERIFY_USERBLOCK (reserve_userblock 2048 ${FILE1} -b 2048)
+
 # add alignment
  set (arg ${FILE1} -t 1 -a 1)
  ADD_H5_TEST (add_alignment "TEST" ${arg})

tools/test/h5repack/h5repack.sh.in

@@ -1805,6 +1805,10 @@ fi
 arg="h5repack_objs.h5 -u ublock.bin -b 2048"
 TOOLTEST add_userblock $arg
 
+# reserve a userblock to file
+arg="h5repack_objs.h5 -b 2048"
+TOOLTEST reserve_userblock $arg
+
 # add alignment
 arg="h5repack_objs.h5 -t 1 -a 1 "
 TOOLTEST add_alignment $arg