76 static int process_raw_chunk(struct sparse_file *s, unsigned int chunk_size,  in process_raw_chunk()  argument
82 	int64_t len = blocks * s->block_size;  in process_raw_chunk()
84 	if (chunk_size % s->block_size != 0) {  in process_raw_chunk()
88 	if (chunk_size / s->block_size != blocks) {  in process_raw_chunk()
92 	ret = sparse_file_add_fd(s, fd, offset, len, block);  in process_raw_chunk()
114 static int process_fill_chunk(struct sparse_file *s, unsigned int chunk_size,  in process_fill_chunk()  argument
119 	int64_t len = (int64_t)blocks * s->block_size;  in process_fill_chunk()
133 	ret = sparse_file_add_fill(s, fill_val, len, block);  in process_fill_chunk()
155 static int process_skip_chunk(struct sparse_file *s, unsigned int chunk_size,  in process_skip_chunk()  argument
164 	        int64_t len = (int64_t)blocks * s->block_size;  in process_skip_chunk()
198 static int process_chunk(struct sparse_file *s, int fd, off64_t offset,  in process_chunk()  argument
209 			ret = process_raw_chunk(s, chunk_data_size, fd, offset,  in process_chunk()
212 				verbose_error(s->verbose, ret, "data block at %" PRId64, offset);  in process_chunk()
217 			ret = process_fill_chunk(s, chunk_data_size, fd,  in process_chunk()
220 				verbose_error(s->verbose, ret, "fill block at %" PRId64, offset);  in process_chunk()
225 			ret = process_skip_chunk(s, chunk_data_size, fd,  in process_chunk()
229 					verbose_error(s->verbose, ret, "skip block at %" PRId64, offset);  in process_chunk()
237 				verbose_error(s->verbose, -EINVAL, "crc block at %" PRId64,  in process_chunk()
243 			verbose_error(s->verbose, -EINVAL, "unknown block %04X at %" PRId64,  in process_chunk()
250 static int sparse_file_read_sparse(struct sparse_file *s, int fd, bool crc)  in sparse_file_read_sparse()  argument
316 		ret = process_chunk(s, fd, offset, sparse_header.chunk_hdr_sz, &chunk_header,  in sparse_file_read_sparse()
332 static int sparse_file_read_normal(struct sparse_file *s, int fd)  in sparse_file_read_normal()  argument
335 	uint32_t *buf = (uint32_t *)malloc(s->block_size);  in sparse_file_read_normal()
337 	int64_t remain = s->len;  in sparse_file_read_normal()
348 		to_read = std::min(remain, (int64_t)(s->block_size));  in sparse_file_read_normal()
356 		if (to_read == s->block_size) {  in sparse_file_read_normal()
358 			for (i = 1; i < s->block_size / sizeof(uint32_t); i++) {  in sparse_file_read_normal()
370 			sparse_file_add_fill(s, buf[0], to_read, block);  in sparse_file_read_normal()
372 			sparse_file_add_fd(s, fd, offset, to_read, block);  in sparse_file_read_normal()
384 int sparse_file_read(struct sparse_file *s, int fd, bool sparse, bool crc)  in sparse_file_read()  argument
391 		return sparse_file_read_sparse(s, fd, crc);  in sparse_file_read()
393 		return sparse_file_read_normal(s, fd);  in sparse_file_read()
402 	struct sparse_file *s;  in sparse_file_import()  local
429 	s = sparse_file_new(sparse_header.blk_sz, len);  in sparse_file_import()
430 	if (!s) {  in sparse_file_import()
438 		sparse_file_destroy(s);  in sparse_file_import()
442 	s->verbose = verbose;  in sparse_file_import()
444 	ret = sparse_file_read(s, fd, true, crc);  in sparse_file_import()
446 		sparse_file_destroy(s);  in sparse_file_import()
450 	return s;  in sparse_file_import()
455 	struct sparse_file *s;  in sparse_file_import_auto()  local
459 	s = sparse_file_import(fd, verbose, crc);  in sparse_file_import_auto()
460 	if (s) {  in sparse_file_import_auto()
461 		return s;  in sparse_file_import_auto()
471 	s = sparse_file_new(4096, len);  in sparse_file_import_auto()
472 	if (!s) {  in sparse_file_import_auto()
476 	ret = sparse_file_read_normal(s, fd);  in sparse_file_import_auto()
478 		sparse_file_destroy(s);  in sparse_file_import_auto()
482 	return s;  in sparse_file_import_auto()