71 	int (*write_data_chunk)(struct output_file *out, unsigned int len,
73 	int (*write_fill_chunk)(struct output_file *out, unsigned int len,
75 	int (*write_skip_chunk)(struct output_file *out, int64_t len);
76 	int (*write_end_chunk)(struct output_file *out);
94 	struct output_file out;  member
99 	container_of((_o), struct output_file_gz, out)
102 	struct output_file out;  member
107 	container_of((_o), struct output_file_normal, out)
110 	struct output_file out;  member
116 	container_of((_o), struct output_file_callback, out)
118 static int file_open(struct output_file *out, int fd)  in file_open()  argument
120 	struct output_file_normal *outn = to_output_file_normal(out);  in file_open()
126 static int file_skip(struct output_file *out, int64_t cnt)  in file_skip()  argument
129 	struct output_file_normal *outn = to_output_file_normal(out);  in file_skip()
139 static int file_pad(struct output_file *out, int64_t len)  in file_pad()  argument
142 	struct output_file_normal *outn = to_output_file_normal(out);  in file_pad()
152 static int file_write(struct output_file *out, void *data, int len)  in file_write()  argument
155 	struct output_file_normal *outn = to_output_file_normal(out);  in file_write()
169 static void file_close(struct output_file *out)  in file_close()  argument
171 	struct output_file_normal *outn = to_output_file_normal(out);  in file_close()
184 static int gz_file_open(struct output_file *out, int fd)  in gz_file_open()  argument
186 	struct output_file_gz *outgz = to_output_file_gz(out);  in gz_file_open()
198 static int gz_file_skip(struct output_file *out, int64_t cnt)  in gz_file_skip()  argument
201 	struct output_file_gz *outgz = to_output_file_gz(out);  in gz_file_skip()
211 static int gz_file_pad(struct output_file *out, int64_t len)  in gz_file_pad()  argument
214 	struct output_file_gz *outgz = to_output_file_gz(out);  in gz_file_pad()
235 static int gz_file_write(struct output_file *out, void *data, int len)  in gz_file_write()  argument
238 	struct output_file_gz *outgz = to_output_file_gz(out);  in gz_file_write()
252 static void gz_file_close(struct output_file *out)  in gz_file_close()  argument
254 	struct output_file_gz *outgz = to_output_file_gz(out);  in gz_file_close()
268 static int callback_file_open(struct output_file *out __unused, int fd __unused)  in callback_file_open()
273 static int callback_file_skip(struct output_file *out, int64_t off)  in callback_file_skip()  argument
275 	struct output_file_callback *outc = to_output_file_callback(out);  in callback_file_skip()
291 static int callback_file_pad(struct output_file *out __unused, int64_t len __unused)  in callback_file_pad()
296 static int callback_file_write(struct output_file *out, void *data, int len)  in callback_file_write()  argument
298 	struct output_file_callback *outc = to_output_file_callback(out);  in callback_file_write()
303 static void callback_file_close(struct output_file *out)  in callback_file_close()  argument
305 	struct output_file_callback *outc = to_output_file_callback(out);  in callback_file_close()
340 static int write_sparse_skip_chunk(struct output_file *out, int64_t skip_len)  in write_sparse_skip_chunk()  argument
345 	if (skip_len % out->block_size) {  in write_sparse_skip_chunk()
347 				skip_len, out->block_size);  in write_sparse_skip_chunk()
354 	chunk_header.chunk_sz = skip_len / out->block_size;  in write_sparse_skip_chunk()
356 	ret = out->ops->write(out, &chunk_header, sizeof(chunk_header));  in write_sparse_skip_chunk()
360 	out->cur_out_ptr += skip_len;  in write_sparse_skip_chunk()
361 	out->chunk_cnt++;  in write_sparse_skip_chunk()
366 static int write_sparse_fill_chunk(struct output_file *out, unsigned int len,  in write_sparse_fill_chunk()  argument
374 	rnd_up_len = ALIGN(len, out->block_size);  in write_sparse_fill_chunk()
379 	chunk_header.chunk_sz = rnd_up_len / out->block_size;  in write_sparse_fill_chunk()
381 	ret = out->ops->write(out, &chunk_header, sizeof(chunk_header));  in write_sparse_fill_chunk()
385 	ret = out->ops->write(out, &fill_val, sizeof(fill_val));  in write_sparse_fill_chunk()
389 	if (out->use_crc) {  in write_sparse_fill_chunk()
390 		count = out->block_size / sizeof(uint32_t);  in write_sparse_fill_chunk()
392 			out->crc32 = sparse_crc32(out->crc32, &fill_val, sizeof(uint32_t));  in write_sparse_fill_chunk()
395 	out->cur_out_ptr += rnd_up_len;  in write_sparse_fill_chunk()
396 	out->chunk_cnt++;  in write_sparse_fill_chunk()
401 static int write_sparse_data_chunk(struct output_file *out, unsigned int len,  in write_sparse_data_chunk()  argument
409 	rnd_up_len = ALIGN(len, out->block_size);  in write_sparse_data_chunk()
415 	chunk_header.chunk_sz = rnd_up_len / out->block_size;  in write_sparse_data_chunk()
417 	ret = out->ops->write(out, &chunk_header, sizeof(chunk_header));  in write_sparse_data_chunk()
421 	ret = out->ops->write(out, data, len);  in write_sparse_data_chunk()
425 		ret = out->ops->write(out, out->zero_buf, zero_len);  in write_sparse_data_chunk()
430 	if (out->use_crc) {  in write_sparse_data_chunk()
431 		out->crc32 = sparse_crc32(out->crc32, data, len);  in write_sparse_data_chunk()
433 			out->crc32 = sparse_crc32(out->crc32, out->zero_buf, zero_len);  in write_sparse_data_chunk()
436 	out->cur_out_ptr += rnd_up_len;  in write_sparse_data_chunk()
437 	out->chunk_cnt++;  in write_sparse_data_chunk()
442 int write_sparse_end_chunk(struct output_file *out)  in write_sparse_end_chunk()  argument
447 	if (out->use_crc) {  in write_sparse_end_chunk()
453 		ret = out->ops->write(out, &chunk_header, sizeof(chunk_header));  in write_sparse_end_chunk()
457 		out->ops->write(out, &out->crc32, 4);  in write_sparse_end_chunk()
462 		out->chunk_cnt++;  in write_sparse_end_chunk()
475 static int write_normal_data_chunk(struct output_file *out, unsigned int len,  in write_normal_data_chunk()  argument
479 	unsigned int rnd_up_len = ALIGN(len, out->block_size);  in write_normal_data_chunk()
481 	ret = out->ops->write(out, data, len);  in write_normal_data_chunk()
487 		ret = out->ops->skip(out, rnd_up_len - len);  in write_normal_data_chunk()
493 static int write_normal_fill_chunk(struct output_file *out, unsigned int len,  in write_normal_fill_chunk()  argument
501 	for (i = 0; i < out->block_size / sizeof(uint32_t); i++) {  in write_normal_fill_chunk()
502 		out->fill_buf[i] = fill_val;  in write_normal_fill_chunk()
506 		write_len = min(len, out->block_size);  in write_normal_fill_chunk()
507 		ret = out->ops->write(out, out->fill_buf, write_len);  in write_normal_fill_chunk()
518 static int write_normal_skip_chunk(struct output_file *out, int64_t len)  in write_normal_skip_chunk()  argument
520 	return out->ops->skip(out, len);  in write_normal_skip_chunk()
523 int write_normal_end_chunk(struct output_file *out)  in write_normal_end_chunk()  argument
525 	return out->ops->pad(out, out->len);  in write_normal_end_chunk()
535 void output_file_close(struct output_file *out)  in output_file_close()  argument
537 	out->sparse_ops->write_end_chunk(out);  in output_file_close()
538 	out->ops->close(out);  in output_file_close()
541 static int output_file_init(struct output_file *out, int block_size,  in output_file_init()  argument
546 	out->len = len;  in output_file_init()
547 	out->block_size = block_size;  in output_file_init()
548 	out->cur_out_ptr = 0ll;  in output_file_init()
549 	out->chunk_cnt = 0;  in output_file_init()
550 	out->crc32 = 0;  in output_file_init()
551 	out->use_crc = crc;  in output_file_init()
553 	out->zero_buf = calloc(block_size, 1);  in output_file_init()
554 	if (!out->zero_buf) {  in output_file_init()
559 	out->fill_buf = calloc(block_size, 1);  in output_file_init()
560 	if (!out->fill_buf) {  in output_file_init()
567 		out->sparse_ops = &sparse_file_ops;  in output_file_init()
569 		out->sparse_ops = &normal_file_ops;  in output_file_init()
579 				.blk_sz = out->block_size,  in output_file_init()
580 				.total_blks = out->len / out->block_size,  in output_file_init()
585 		if (out->use_crc) {  in output_file_init()
589 		ret = out->ops->write(out, &sparse_header, sizeof(sparse_header));  in output_file_init()
598 	free(out->fill_buf);  in output_file_init()
600 	free(out->zero_buf);  in output_file_init()
612 	outgz->out.ops = &gz_file_ops;  in output_file_new_gz()
614 	return &outgz->out;  in output_file_new_gz()
625 	outn->out.ops = &file_ops;  in output_file_new_normal()
627 	return &outn->out;  in output_file_new_normal()
643 	outc->out.ops = &callback_file_ops;  in output_file_open_callback()
647 	ret = output_file_init(&outc->out, block_size, len, sparse, chunks, crc);  in output_file_open_callback()
653 	return &outc->out;  in output_file_open_callback()
660 	struct output_file *out;  in output_file_open_fd()  local
663 		out = output_file_new_gz();  in output_file_open_fd()
665 		out = output_file_new_normal();  in output_file_open_fd()
667 	if (!out) {  in output_file_open_fd()
671 	out->ops->open(out, fd);  in output_file_open_fd()
673 	ret = output_file_init(out, block_size, len, sparse, chunks, crc);  in output_file_open_fd()
675 		free(out);  in output_file_open_fd()
679 	return out;  in output_file_open_fd()
683 int write_data_chunk(struct output_file *out, unsigned int len, void *data)  in write_data_chunk()  argument
685 	return out->sparse_ops->write_data_chunk(out, len, data);  in write_data_chunk()
689 int write_fill_chunk(struct output_file *out, unsigned int len,  in write_fill_chunk()  argument
692 	return out->sparse_ops->write_fill_chunk(out, len, fill_val);  in write_fill_chunk()
695 int write_fd_chunk(struct output_file *out, unsigned int len,  in write_fd_chunk()  argument
734 	ret = out->sparse_ops->write_data_chunk(out, len, ptr);  in write_fd_chunk()
746 int write_file_chunk(struct output_file *out, unsigned int len,  in write_file_chunk()  argument
756 	ret = write_fd_chunk(out, len, file_fd, offset);  in write_file_chunk()
763 int write_skip_chunk(struct output_file *out, int64_t len)  in write_skip_chunk()  argument
765 	return out->sparse_ops->write_skip_chunk(out, len);  in write_skip_chunk()