sqfs_err sqfs_block_read(sqfs *fs, sqfs_off_t pos, bool compressed,
uint32_t size, size_t outsize, sqfs_block **block) {
sqfs_err err = SQFS_ERR;
if (!(*block = malloc(sizeof(**block))))
return SQFS_ERR;
if (!((*block)->data = malloc(size)))
goto error;
if (sqfs_pread(fs->fd, (*block)->data, size, pos + fs->offset) != size)
goto error;
if (compressed) {
char *decomp = malloc(outsize);
if (!decomp)
goto error;
err = fs->decompressor((*block)->data, size, decomp, &outsize);
if (err) {
free(decomp);
goto error;
}
free((*block)->data);
(*block)->data = decomp;
(*block)->size = outsize;
} else {
(*block)->size = size;
}
return SQFS_OK;
error:
sqfs_block_dispose(*block);
*block = NULL;
return err;
}
static void sqfs_block_cache_dispose(void *data) {
sqfs_block_cache_entry *entry = (sqfs_block_cache_entry*)data;
sqfs_block_dispose(entry->block);
}
