From cdccc69c62579b0c13b35fad0728079652b8f3c9 Mon Sep 17 00:00:00 2001 From: David Oberhollenzer Date: Tue, 31 Jan 2023 11:21:30 +0100 Subject: Move library source into src sub-directory Signed-off-by: David Oberhollenzer --- lib/sqfs/src/write_table.c | 81 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 81 insertions(+) create mode 100644 lib/sqfs/src/write_table.c (limited to 'lib/sqfs/src/write_table.c') diff --git a/lib/sqfs/src/write_table.c b/lib/sqfs/src/write_table.c new file mode 100644 index 0000000..6f28a75 --- /dev/null +++ b/lib/sqfs/src/write_table.c @@ -0,0 +1,81 @@ +/* SPDX-License-Identifier: LGPL-3.0-or-later */ +/* + * write_table.c + * + * Copyright (C) 2019 David Oberhollenzer + */ +#define SQFS_BUILDING_DLL +#include "config.h" + +#include "sqfs/meta_writer.h" +#include "sqfs/error.h" +#include "sqfs/super.h" +#include "sqfs/table.h" +#include "sqfs/block.h" +#include "sqfs/io.h" +#include "util/util.h" + +#include + +int sqfs_write_table(sqfs_file_t *file, sqfs_compressor_t *cmp, + const void *data, size_t table_size, sqfs_u64 *start) +{ + size_t block_count, list_size, diff, blkidx = 0; + sqfs_u64 off, *locations; + sqfs_meta_writer_t *m; + int ret; + + block_count = table_size / SQFS_META_BLOCK_SIZE; + if ((table_size % SQFS_META_BLOCK_SIZE) != 0) + ++block_count; + + locations = alloc_array(sizeof(sqfs_u64), block_count); + + if (locations == NULL) + return SQFS_ERROR_ALLOC; + + /* Write actual data */ + m = sqfs_meta_writer_create(file, cmp, 0); + if (m == NULL) { + ret = SQFS_ERROR_ALLOC; + goto out_idx; + } + + while (table_size > 0) { + locations[blkidx++] = htole64(file->get_size(file)); + + diff = SQFS_META_BLOCK_SIZE; + if (diff > table_size) + diff = table_size; + + ret = sqfs_meta_writer_append(m, data, diff); + if (ret) + goto out; + + data = (const char *)data + diff; + table_size -= diff; + } + + ret = sqfs_meta_writer_flush(m); + if (ret) + goto out; + + /* write location list */ + *start = file->get_size(file); + + list_size = sizeof(sqfs_u64) * block_count; + + off = file->get_size(file); + + ret = file->write_at(file, off, locations, list_size); + if (ret) + goto out; + + /* cleanup */ + ret = 0; +out: + sqfs_drop(m); +out_idx: + free(locations); + return ret; +} -- cgit v1.2.3