229 	u16 len;		/* length of entire record */  member
319 	if (!msg->len)  in log_from_idx()
335 	if (!msg->len) {  in log_next()
337 		return msg->len;  in log_next()
339 	return idx + msg->len;  in log_next()
472 	msg->len = size;  in log_store()
475 	log_next_idx += msg->len;  in log_store()
620 	size_t len = iov_iter_count(from);  in devkmsg_write()  local
621 	ssize_t ret = len;  in devkmsg_write()
623 	if (len > LOG_LINE_MAX)  in devkmsg_write()
625 	buf = kmalloc(len+1, GFP_KERNEL);  in devkmsg_write()
629 	buf[len] = '\0';  in devkmsg_write()
630 	if (copy_from_iter(buf, len, from) != len) {  in devkmsg_write()
655 			len -= endp - line;  in devkmsg_write()
670 	size_t len;  in devkmsg_read()  local
705 	len = msg_print_ext_header(user->buf, sizeof(user->buf),  in devkmsg_read()
707 	len += msg_print_ext_body(user->buf + len, sizeof(user->buf) - len,  in devkmsg_read()
716 	if (len > count) {  in devkmsg_read()
721 	if (copy_to_user(buf, user->buf, len)) {  in devkmsg_read()
725 	ret = len;  in devkmsg_read()
863 	VMCOREINFO_OFFSET(printk_log, len);  in log_buf_kexec_setup()
1058 	size_t len = 0;  in print_prefix()  local
1063 			len += sprintf(buf, "<%u>", prefix);  in print_prefix()
1065 			len += 3;  in print_prefix()
1067 				len += 3;  in print_prefix()
1069 				len += 2;  in print_prefix()
1071 				len++;  in print_prefix()
1075 	len += print_time(msg->ts_nsec, buf ? buf + len : NULL);  in print_prefix()
1076 	return len;  in print_prefix()
1086 	size_t len = 0;  in msg_print_text()  local
1113 			    text_len + 1 >= size - len)  in msg_print_text()
1117 				len += print_prefix(msg, syslog, buf + len);  in msg_print_text()
1118 			memcpy(buf + len, text, text_len);  in msg_print_text()
1119 			len += text_len;  in msg_print_text()
1121 				buf[len++] = '\n';  in msg_print_text()
1125 				len += print_prefix(msg, syslog, NULL);  in msg_print_text()
1126 			len += text_len;  in msg_print_text()
1128 				len++;  in msg_print_text()
1135 	return len;  in msg_print_text()
1142 	int len = 0;  in syslog_print()  local
1176 		} else if (!len){  in syslog_print()
1188 			if (!len)  in syslog_print()
1189 				len = -EFAULT;  in syslog_print()
1193 		len += n;  in syslog_print()
1199 	return len;  in syslog_print()
1205 	int len = 0;  in syslog_print_all()  local
1234 			len += msg_print_text(msg, prev, true, NULL, 0);  in syslog_print_all()
1244 		while (len > size && seq < log_next_seq) {  in syslog_print_all()
1247 			len -= msg_print_text(msg, prev, true, NULL, 0);  in syslog_print_all()
1256 		len = 0;  in syslog_print_all()
1257 		while (len >= 0 && seq < next_seq) {  in syslog_print_all()
1264 				len = textlen;  in syslog_print_all()
1272 			if (copy_to_user(buf + len, text, textlen))  in syslog_print_all()
1273 				len = -EFAULT;  in syslog_print_all()
1275 				len += textlen;  in syslog_print_all()
1294 	return len;  in syslog_print_all()
1297 int do_syslog(int type, char __user *buf, int len, int source)  in do_syslog()  argument
1314 		if (!buf || len < 0)  in do_syslog()
1317 		if (!len)  in do_syslog()
1319 		if (!access_ok(VERIFY_WRITE, buf, len)) {  in do_syslog()
1327 		error = syslog_print(buf, len);  in do_syslog()
1336 		if (!buf || len < 0)  in do_syslog()
1339 		if (!len)  in do_syslog()
1341 		if (!access_ok(VERIFY_WRITE, buf, len)) {  in do_syslog()
1345 		error = syslog_print_all(buf, len, clear);  in do_syslog()
1367 		if (len < 1 || len > 8)  in do_syslog()
1369 		if (len < minimum_console_loglevel)  in do_syslog()
1370 			len = minimum_console_loglevel;  in do_syslog()
1371 		console_loglevel = len;  in do_syslog()
1423 SYSCALL_DEFINE3(syslog, int, type, char __user *, buf, int, len)  in SYSCALL_DEFINE3()  argument
1425 	return do_syslog(type, buf, len, SYSLOG_FROM_READER);  in SYSCALL_DEFINE3()
1435 				 const char *text, size_t len)  in call_console_drivers()  argument
1439 	trace_console(text, len);  in call_console_drivers()
1459 			con->write(con, text, len);  in call_console_drivers()
1559 	size_t len;			/* length == 0 means unused buffer */  member
1573 	if (cont.len == 0)  in cont_flush()
1583 			  cont.ts_nsec, NULL, 0, cont.buf, cont.len);  in cont_flush()
1592 			  NULL, 0, cont.buf, cont.len);  in cont_flush()
1593 		cont.len = 0;  in cont_flush()
1597 static bool cont_add(int facility, int level, const char *text, size_t len)  in cont_add()  argument
1599 	if (cont.len && cont.flushed)  in cont_add()
1607 	if (nr_ext_console_drivers || cont.len + len > sizeof(cont.buf)) {  in cont_add()
1612 	if (!cont.len) {  in cont_add()
1622 	memcpy(cont.buf + cont.len, text, len);  in cont_add()
1623 	cont.len += len;  in cont_add()
1625 	if (cont.len > (sizeof(cont.buf) * 80) / 100)  in cont_add()
1634 	size_t len;  in cont_print_text()  local
1641 	len = cont.len - cont.cons;  in cont_print_text()
1642 	if (len > 0) {  in cont_print_text()
1643 		if (len+1 > size)  in cont_print_text()
1644 			len = size-1;  in cont_print_text()
1645 		memcpy(text + textlen, cont.buf + cont.cons, len);  in cont_print_text()
1646 		textlen += len;  in cont_print_text()
1647 		cont.cons = cont.len;  in cont_print_text()
1654 		cont.len = 0;  in cont_print_text()
1768 		if (cont.len && (lflags & LOG_PREFIX || cont.owner != current))  in vprintk_emit()
1789 		if (cont.len) {  in vprintk_emit()
1937 	size_t len;  member
1954 				 const char *text, size_t len) {}  in call_console_drivers()  argument
2189 	size_t len;  in console_cont_flush()  local
2193 	if (!cont.len)  in console_cont_flush()
2204 	len = cont_print_text(text, size);  in console_cont_flush()
2207 	call_console_drivers(cont.level, NULL, 0, text, len);  in console_cont_flush()
2262 		size_t len;  in console_unlock()  local
2272 			len = sprintf(text, "** %u printk messages dropped ** ",  in console_unlock()
2280 			len = 0;  in console_unlock()
2305 		len += msg_print_text(msg, console_prev, false,  in console_unlock()
2306 				      text + len, sizeof(text) - len);  in console_unlock()
2322 		call_console_drivers(level, ext_text, ext_len, text, len);  in console_unlock()
2920 			       char *line, size_t size, size_t *len)  in kmsg_dump_get_line_nolock()  argument
2946 	if (len)  in kmsg_dump_get_line_nolock()
2947 		*len = l;  in kmsg_dump_get_line_nolock()
2969 			char *line, size_t size, size_t *len)  in kmsg_dump_get_line()  argument
2975 	ret = kmsg_dump_get_line_nolock(dumper, syslog, line, size, len);  in kmsg_dump_get_line()
3002 			  char *buf, size_t size, size_t *len)  in kmsg_dump_get_buffer()  argument
3074 	if (len)  in kmsg_dump_get_buffer()
3075 		*len = l;  in kmsg_dump_get_buffer()