From 6391ed9a18caf89ade24c05083569c66d8daa33b Mon Sep 17 00:00:00 2001 From: David Oberhollenzer Date: Thu, 5 Sep 2019 15:44:56 +0200 Subject: Move block processor from compressor to libsquashfs code Signed-off-by: David Oberhollenzer --- lib/sqfs/process_block.c | 38 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 38 insertions(+) create mode 100644 lib/sqfs/process_block.c (limited to 'lib/sqfs/process_block.c') diff --git a/lib/sqfs/process_block.c b/lib/sqfs/process_block.c new file mode 100644 index 0000000..a20b56b --- /dev/null +++ b/lib/sqfs/process_block.c @@ -0,0 +1,38 @@ +/* SPDX-License-Identifier: GPL-3.0-or-later */ +/* + * process_block.c + * + * Copyright (C) 2019 David Oberhollenzer + */ +#include "config.h" + +#include "sqfs/block_processor.h" +#include "util.h" + +#include +#include + +int process_block(block_t *block, compressor_t *cmp, + uint8_t *scratch, size_t scratch_size) +{ + ssize_t ret; + + if (!(block->flags & BLK_DONT_CHECKSUM)) + block->checksum = crc32(0, block->data, block->size); + + if (!(block->flags & BLK_DONT_COMPRESS)) { + ret = cmp->do_block(cmp, block->data, block->size, + scratch, scratch_size); + + if (ret < 0) + return -1; + + if (ret > 0) { + memcpy(block->data, scratch, ret); + block->size = ret; + block->flags |= BLK_IS_COMPRESSED; + } + } + + return 0; +} -- cgit v1.2.3