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/* SPDX-License-Identifier: GPL-3.0-or-later */
/*
* data_writer.c
*
* Copyright (C) 2019 David Oberhollenzer <goliath@infraroot.at>
*/
#include "config.h"
#include "highlevel.h"
#include "util.h"
static sqfs_u8 buffer[4096];
int write_data_from_file(sqfs_data_writer_t *data, sqfs_inode_generic_t *inode,
sqfs_file_t *file, int flags)
{
sqfs_u64 filesz, offset;
size_t diff;
int ret;
if (sqfs_data_writer_begin_file(data, inode, flags))
return -1;
sqfs_inode_get_file_size(inode, &filesz);
for (offset = 0; offset < filesz; offset += diff) {
if (filesz - offset > sizeof(buffer)) {
diff = sizeof(buffer);
} else {
diff = filesz - offset;
}
ret = file->read_at(file, offset, buffer, diff);
if (ret)
return ret;
ret = sqfs_data_writer_append(data, buffer, diff);
if (ret)
return ret;
}
return sqfs_data_writer_end_file(data);
}
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