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/* SPDX-License-Identifier: GPL-3.0-or-later */
#ifndef DATA_WRITER_H
#define DATA_WRITER_H
#include "squashfs.h"
#include "compress.h"
#include "fstree.h"
typedef struct data_writer_t data_writer_t;
/*
Create a data writer. The pointer to the super block is kept internally and
used to automatically update various counters when writing data.
Returns NULL on failure and prints errors to stderr.
*/
data_writer_t *data_writer_create(sqfs_super_t *super, compressor_t *cmp,
int outfd);
void data_writer_destroy(data_writer_t *data);
/*
Write the finalfragment table to the underlying file.
Returns 0 on success, prints errors to stderr.
*/
int data_writer_write_fragment_table(data_writer_t *data);
/*
Compress and flush the current fragment buffer even if it is not full yet.
Returns 0 on success, prints errors to stderr.
*/
int data_writer_flush_fragments(data_writer_t *data);
/*
Read data from the given file descriptor, partition it into blocks and
write them out (possibly compressed) to the underlying file. If the size
is not a multiple of the block size, the last bit is kept in an internal
fragment buffer which is written out if full.
The file_info_t object is updated accordingly and used to determine the
number of bytes to write and the input file name to report errors.
Returns 0 on success, prints errors to stderr.
*/
int write_data_from_fd(data_writer_t *data, file_info_t *fi, int infd);
#endif /* DATA_WRITER_H */
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