224 	 * uncompressed record size, since any record that would be expanded by  in allocate_buf_for_compression()
262 void pstore_record_init(struct pstore_record *record,  in pstore_record_init()  argument
265 	memset(record, 0, sizeof(*record));  in pstore_record_init()
267 	record->psi = psinfo;  in pstore_record_init()
270 	record->time = ns_to_timespec64(ktime_get_real_fast_ns());  in pstore_record_init()
310 		struct pstore_record record;  in pstore_dump()  local
312 		pstore_record_init(&record, psinfo);  in pstore_dump()
313 		record.type = PSTORE_TYPE_DMESG;  in pstore_dump()
314 		record.count = oopscount;  in pstore_dump()
315 		record.reason = detail->reason;  in pstore_dump()
316 		record.part = part;  in pstore_dump()
317 		record.buf = psinfo->buf;  in pstore_dump()
338 				record.compressed = true;  in pstore_dump()
339 				record.size = zipped_len;  in pstore_dump()
346 				 * the pstore record, and discard the rest.  in pstore_dump()
348 				record.size = psinfo->bufsize;  in pstore_dump()
352 			record.size = header_size + dump_size;  in pstore_dump()
355 		ret = psinfo->write(&record);  in pstore_dump()
365 		total += record.size;  in pstore_dump()
396 	struct pstore_record record;  in pstore_console_write()  local
401 	pstore_record_init(&record, psinfo);  in pstore_console_write()
402 	record.type = PSTORE_TYPE_CONSOLE;  in pstore_console_write()
404 	record.buf = (char *)s;  in pstore_console_write()
405 	record.size = c;  in pstore_console_write()
406 	psinfo->write(&record);  in pstore_console_write()
436 static int pstore_write_user_compat(struct pstore_record *record,  in pstore_write_user_compat()  argument
441 	if (record->buf)  in pstore_write_user_compat()
444 	record->buf = vmemdup_user(buf, record->size);  in pstore_write_user_compat()
445 	if (IS_ERR(record->buf)) {  in pstore_write_user_compat()
446 		ret = PTR_ERR(record->buf);  in pstore_write_user_compat()
450 	ret = record->psi->write(record);  in pstore_write_user_compat()
452 	kvfree(record->buf);  in pstore_write_user_compat()
454 	record->buf = NULL;  in pstore_write_user_compat()
456 	return unlikely(ret < 0) ? ret : record->size;  in pstore_write_user_compat()
583 static void decompress_record(struct pstore_record *record,  in decompress_record()  argument
591 	if (!IS_ENABLED(CONFIG_PSTORE_COMPRESS) || !record->compressed)  in decompress_record()
595 	if (record->type != PSTORE_TYPE_DMESG) {  in decompress_record()
596 		pr_warn("ignored compressed record type %d\n", record->type);  in decompress_record()
614 	workspace = kvzalloc(max_uncompressed_size + record->ecc_notice_size,  in decompress_record()
619 	zstream->next_in	= record->buf;  in decompress_record()
620 	zstream->avail_in	= record->size;  in decompress_record()
634 	memcpy(workspace + unzipped_len, record->buf + record->size,  in decompress_record()
635 	       record->ecc_notice_size);  in decompress_record()
638 	unzipped = kvmemdup(workspace, unzipped_len + record->ecc_notice_size,  in decompress_record()
645 	kvfree(record->buf);  in decompress_record()
646 	record->buf = unzipped;  in decompress_record()
647 	record->size = unzipped_len;  in decompress_record()
648 	record->compressed = false;  in decompress_record()
678 	 * Backend callback read() allocates record.buf. decompress_record()  in pstore_get_backend_records()
679 	 * may reallocate record.buf. On success, pstore_mkfile() will keep  in pstore_get_backend_records()
680 	 * the record.buf, so free it only on failure.  in pstore_get_backend_records()
683 		struct pstore_record *record;  in pstore_get_backend_records()  local
686 		record = kzalloc(sizeof(*record), GFP_KERNEL);  in pstore_get_backend_records()
687 		if (!record) {  in pstore_get_backend_records()
688 			pr_err("out of memory creating record\n");  in pstore_get_backend_records()
691 		pstore_record_init(record, psi);  in pstore_get_backend_records()
693 		record->size = psi->read(record);  in pstore_get_backend_records()
696 		if (record->size <= 0) {  in pstore_get_backend_records()
697 			kfree(record);  in pstore_get_backend_records()
701 		decompress_record(record, &zstream);  in pstore_get_backend_records()
702 		rc = pstore_mkfile(root, record);  in pstore_get_backend_records()
704 			/* pstore_mkfile() did not take record, so free it. */  in pstore_get_backend_records()
705 			kvfree(record->buf);  in pstore_get_backend_records()
706 			kfree(record->priv);  in pstore_get_backend_records()
707 			kfree(record);  in pstore_get_backend_records()
724 		pr_warn("failed to create %d record(s) from '%s'\n",  in pstore_get_backend_records()