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/* SPDX-License-Identifier: GPL-3.0-or-later */
/*
* table.c
*
* Copyright (C) 2021 David Oberhollenzer <goliath@infraroot.at>
*/
#include "config.h"
#include "compat.h"
#include "../test.h"
#include "sqfs/compressor.h"
#include "sqfs/error.h"
#include "sqfs/table.h"
#include "sqfs/io.h"
static sqfs_u8 file_data[32768];
static size_t file_used = 0;
static int dummy_read_at(sqfs_file_t *file, sqfs_u64 offset,
void *buffer, size_t size)
{
(void)file;
if (offset >= sizeof(file_data))
return SQFS_ERROR_OUT_OF_BOUNDS;
if (size > (sizeof(file_data) - offset))
return SQFS_ERROR_OUT_OF_BOUNDS;
memset(buffer, 0, size);
if (offset < file_used) {
if (size > (file_used - offset))
size = file_used - offset;
memcpy(buffer, file_data + offset, size);
}
return 0;
}
static int dummy_write_at(sqfs_file_t *file, sqfs_u64 offset,
const void *buffer, size_t size)
{
(void)file;
if (offset >= sizeof(file_data))
return SQFS_ERROR_OUT_OF_BOUNDS;
if (size > (sizeof(file_data) - offset))
return SQFS_ERROR_OUT_OF_BOUNDS;
if (offset > file_used)
memset(file_data + file_used, 0, offset - file_used);
if ((offset + size) > file_used)
file_used = offset + size;
memcpy(file_data + offset, buffer, size);
return 0;
}
static sqfs_u64 dummy_get_size(const sqfs_file_t *file)
{
(void)file;
return file_used;
}
static sqfs_s32 dummy_compress(sqfs_compressor_t *cmp, const sqfs_u8 *in,
sqfs_u32 size, sqfs_u8 *out, sqfs_u32 outsize)
{
(void)cmp;
memcpy(out, in, outsize < size ? outsize : size);
return 0;
}
static sqfs_s32 dummy_uncompress(sqfs_compressor_t *cmp, const sqfs_u8 *in,
sqfs_u32 size, sqfs_u8 *out, sqfs_u32 outsize)
{
(void)cmp;
if (outsize < size)
return 0;
memcpy(out, in, size);
return size;
}
static sqfs_file_t dummy_file = {
{ NULL, NULL },
dummy_read_at,
dummy_write_at,
dummy_get_size,
NULL,
};
static sqfs_compressor_t dummy_compressor = {
{ NULL, NULL },
NULL,
NULL,
NULL,
dummy_compress,
};
static sqfs_compressor_t dummy_uncompressor = {
{ NULL, NULL },
NULL,
NULL,
NULL,
dummy_uncompress,
};
/*****************************************************************************/
static sqfs_u64 table[4000];
int main(void)
{
sqfs_u64 start, value, locations[4], *copy;
sqfs_u16 hdr;
size_t i;
int ret;
/* fill the table with data */
for (i = 0; i < sizeof(table) / sizeof(table[0]); ++i)
table[i] = i;
/* serialize the table */
ret = sqfs_write_table(&dummy_file, &dummy_compressor,
table, sizeof(table), &start);
TEST_EQUAL_I(ret, 0);
TEST_EQUAL_UI(file_used, (3 * (8192 + 2) + (7424 + 2) + 4 * sizeof(sqfs_u64)));
TEST_EQUAL_UI(start, (3 * (8192 + 2) + (7424 + 2)));
/* check the location list */
memcpy(locations, file_data + start, sizeof(locations));
for (i = 0; i < 4; ++i)
locations[i] = le32toh(locations[i]);
TEST_EQUAL_UI(locations[0], 0);
TEST_EQUAL_UI(locations[1], (1 * (8192 + 2)));
TEST_EQUAL_UI(locations[2], (2 * (8192 + 2)));
TEST_EQUAL_UI(locations[3], (3 * (8192 + 2)));
/* check the individual blocks */
memcpy(&hdr, file_data + locations[0], sizeof(hdr));
hdr = le16toh(hdr);
TEST_EQUAL_UI(hdr, (0x8000 | 8192));
for (i = 0; i < 8192; i += sizeof(sqfs_u64)) {
memcpy(&value, (file_data + locations[0] + 2) + i,
sizeof(value));
TEST_EQUAL_UI(value, i / sizeof(sqfs_u64));
}
memcpy(&hdr, file_data + locations[1], sizeof(hdr));
hdr = le16toh(hdr);
TEST_EQUAL_UI(hdr, (0x8000 | 8192));
for (i = 0; i < 8192; i += sizeof(sqfs_u64)) {
memcpy(&value, (file_data + locations[1] + 2) + i,
sizeof(value));
TEST_EQUAL_UI(value, (1024 + i / sizeof(sqfs_u64)));
}
memcpy(&hdr, file_data + locations[2], sizeof(hdr));
hdr = le16toh(hdr);
TEST_EQUAL_UI(hdr, (0x8000 | 8192));
for (i = 0; i < 8192; i += sizeof(sqfs_u64)) {
memcpy(&value, (file_data + locations[2] + 2) + i,
sizeof(value));
TEST_EQUAL_UI(value, (2048 + i / sizeof(sqfs_u64)));
}
memcpy(&hdr, file_data + locations[3], sizeof(hdr));
hdr = le16toh(hdr);
TEST_EQUAL_UI(hdr, (0x8000 | 7424));
for (i = 0; i < 7424; i += sizeof(sqfs_u64)) {
memcpy(&value, (file_data + locations[3] + 2) + i,
sizeof(value));
TEST_EQUAL_UI(value, (3072 + i / sizeof(sqfs_u64)));
}
/* read the table back */
ret = sqfs_read_table(&dummy_file, &dummy_uncompressor,
sizeof(table), start, 0, start, (void **)©);
TEST_EQUAL_I(ret, 0);
ret = memcmp(copy, table, sizeof(table));
TEST_EQUAL_I(ret, 0);
free(copy);
return EXIT_SUCCESS;
}
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