diff options
| -rw-r--r-- | src/H5Dchunk.c | 29 |
1 files changed, 26 insertions, 3 deletions
diff --git a/src/H5Dchunk.c b/src/H5Dchunk.c index 91f3b91..c1ade91 100644 --- a/src/H5Dchunk.c +++ b/src/H5Dchunk.c @@ -1493,6 +1493,9 @@ H5D__create_chunk_map_single(H5D_chunk_map_t *fm, const H5D_io_info_t /* Set chunk location & hyperslab size */ for(u = 0; u < fm->f_ndims; u++) { + /* Validate this chunk dimension */ + if(fm->layout->u.chunk.dim[u] == 0) + HGOTO_ERROR(H5E_DATASET, H5E_BADVALUE, FAIL, "chunk size must be > 0, dim = %u ", u) HDassert(sel_start[u] == sel_end[u]); chunk_info->scaled[u] = sel_start[u] / fm->layout->u.chunk.dim[u]; coords[u] = chunk_info->scaled[u] * fm->layout->u.chunk.dim[u]; @@ -1580,6 +1583,9 @@ H5D__create_chunk_file_map_hyper(H5D_chunk_map_t *fm, const H5D_io_info_t /* Set initial chunk location & hyperslab size */ for(u = 0; u < fm->f_ndims; u++) { + /* Validate this chunk dimension */ + if(fm->layout->u.chunk.dim[u] == 0) + HGOTO_ERROR(H5E_DATASET, H5E_BADVALUE, FAIL, "chunk size must be > 0, dim = %u ", u) scaled[u] = start_scaled[u] = sel_start[u] / fm->layout->u.chunk.dim[u]; coords[u] = start_coords[u] = scaled[u] * fm->layout->u.chunk.dim[u]; end[u] = (coords[u] + fm->chunk_dim[u]) - 1; @@ -4043,6 +4049,9 @@ H5D__chunk_allocate(const H5D_io_info_t *io_info, hbool_t full_overwrite, hsize_ * assume here that all elements of space_dim are > 0. This is checked at * the top of this function. */ for(op_dim=0; op_dim<space_ndims; op_dim++) { + /* Validate this chunk dimension */ + if(chunk_dim[op_dim] == 0) + HGOTO_ERROR(H5E_DATASET, H5E_BADVALUE, FAIL, "chunk size must be > 0, dim = %u ", op_dim) min_unalloc[op_dim] = (old_dim[op_dim] + chunk_dim[op_dim] - 1) / chunk_dim[op_dim]; max_unalloc[op_dim] = (space_dim[op_dim] - 1) / chunk_dim[op_dim]; @@ -4484,13 +4493,17 @@ H5D__chunk_update_old_edge_chunks(H5D_t *dset, hsize_t old_dim[]) /* Start off with this dimension marked as not needing to be modified */ new_full_dim[op_dim] = FALSE; + /* Validate this chunk dimension */ + if(chunk_dim[op_dim] == 0) + HGOTO_ERROR(H5E_DATASET, H5E_BADVALUE, FAIL, "chunk size must be > 0, dim = %u ", op_dim) + /* Calculate offset of first previously incomplete chunk in this * dimension */ - old_edge_chunk_sc[op_dim] = (old_dim[op_dim] / chunk_dim[op_dim]); + old_edge_chunk_sc[op_dim] = (old_dim[op_dim] / chunk_dim[op_dim]); /* Calculate the largest offset of chunks that might need to be * modified in this dimension */ - max_edge_chunk_sc[op_dim] = MIN((old_dim[op_dim] - 1) / chunk_dim[op_dim], + max_edge_chunk_sc[op_dim] = MIN((old_dim[op_dim] - 1) / chunk_dim[op_dim], MAX((space_dim[op_dim] / chunk_dim[op_dim]), 1) - 1); /* Check for old_dim aligned with chunk boundary in this dimension, if @@ -4626,6 +4639,9 @@ H5D__chunk_collective_fill(const H5D_t *dset, H5D_chunk_coll_info_t *chunk_info, HGOTO_ERROR(H5E_INTERNAL, H5E_MPI, FAIL, "Can't retrieve MPI size") /* Distribute evenly the number of blocks between processes. */ + if(mpi_size == 0) + HGOTO_ERROR(H5E_DATASET, H5E_BADVALUE, FAIL, "Resulted in division by zero") +/* BMR: I don't know whether mpi_size = 0 is a valid value, please advise */ num_blocks = chunk_info->num_io / mpi_size; /* value should be the same on all procs */ /* after evenly distributing the blocks between processes, are @@ -5066,6 +5082,10 @@ H5D__chunk_prune_by_extent(H5D_t *dset, const hsize_t *old_dim) HDmemset(min_mod_chunk_sc, 0, sizeof(min_mod_chunk_sc)); HDmemset(max_mod_chunk_sc, 0, sizeof(max_mod_chunk_sc)); for(op_dim = 0; op_dim < (unsigned)space_ndims; op_dim++) { + /* Validate this chunk dimension */ + if(chunk_dim[op_dim] == 0) + HGOTO_ERROR(H5E_DATASET, H5E_BADVALUE, FAIL, "chunk size must be > 0, dim = %u ", op_dim) + /* Calculate the largest offset of chunks that might need to be * modified in this dimension */ max_mod_chunk_sc[op_dim] = (old_dim[op_dim] - 1) / chunk_dim[op_dim]; @@ -5721,9 +5741,12 @@ H5D__chunk_copy_cb(const H5D_chunk_rec_t *chunk_rec, void *_udata) /* (background buffer has already been zeroed out, if not expanding) */ if(udata->cpy_info->expand_ref) { size_t ref_count; + size_t dt_size; /* Determine # of reference elements to copy */ - ref_count = nbytes / H5T_get_size(udata->dt_src); + if((dt_size = H5T_get_size(udata->dt_src)) == 0) + HGOTO_ERROR(H5E_DATASET, H5E_BADVALUE, FAIL, "size must not be 0") + ref_count = nbytes / dt_size; /* Copy the reference elements */ if(H5O_copy_expand_ref(udata->file_src, buf, udata->idx_info_dst->f, bkg, ref_count, H5T_get_ref_type(udata->dt_src), udata->cpy_info) < 0) |