217 	u16 len;		/* length of entire record */  member
304 	if (!msg->len)  in log_from_idx()
320 	if (!msg->len) {  in log_next()
322 		return msg->len;  in log_next()
324 	return idx + msg->len;  in log_next()
457 	msg->len = size;  in log_store()
460 	log_next_idx += msg->len;  in log_store()
525 	size_t len = iov_iter_count(from);  in devkmsg_write()  local
526 	ssize_t ret = len;  in devkmsg_write()
528 	if (len > LOG_LINE_MAX)  in devkmsg_write()
530 	buf = kmalloc(len+1, GFP_KERNEL);  in devkmsg_write()
534 	buf[len] = '\0';  in devkmsg_write()
535 	if (copy_from_iter(buf, len, from) != len) {  in devkmsg_write()
559 			len -= endp - line;  in devkmsg_write()
577 	size_t len;  in devkmsg_read()  local
629 	len = sprintf(user->buf, "%u,%llu,%llu,%c;",  in devkmsg_read()
639 			len += sprintf(user->buf + len, "\\x%02x", c);  in devkmsg_read()
641 			user->buf[len++] = c;  in devkmsg_read()
643 	user->buf[len++] = '\n';  in devkmsg_read()
652 				user->buf[len++] = ' ';  in devkmsg_read()
657 				user->buf[len++] = '\n';  in devkmsg_read()
663 				len += sprintf(user->buf + len, "\\x%02x", c);  in devkmsg_read()
667 			user->buf[len++] = c;  in devkmsg_read()
669 		user->buf[len++] = '\n';  in devkmsg_read()
676 	if (len > count) {  in devkmsg_read()
681 	if (copy_to_user(buf, user->buf, len)) {  in devkmsg_read()
685 	ret = len;  in devkmsg_read()
823 	VMCOREINFO_OFFSET(printk_log, len);  in log_buf_kexec_setup()
1018 	size_t len = 0;  in print_prefix()  local
1023 			len += sprintf(buf, "<%u>", prefix);  in print_prefix()
1025 			len += 3;  in print_prefix()
1027 				len += 3;  in print_prefix()
1029 				len += 2;  in print_prefix()
1031 				len++;  in print_prefix()
1035 	len += print_time(msg->ts_nsec, buf ? buf + len : NULL);  in print_prefix()
1036 	return len;  in print_prefix()
1046 	size_t len = 0;  in msg_print_text()  local
1073 			    text_len + 1 >= size - len)  in msg_print_text()
1077 				len += print_prefix(msg, syslog, buf + len);  in msg_print_text()
1078 			memcpy(buf + len, text, text_len);  in msg_print_text()
1079 			len += text_len;  in msg_print_text()
1081 				buf[len++] = '\n';  in msg_print_text()
1085 				len += print_prefix(msg, syslog, NULL);  in msg_print_text()
1086 			len += text_len;  in msg_print_text()
1088 				len++;  in msg_print_text()
1095 	return len;  in msg_print_text()
1102 	int len = 0;  in syslog_print()  local
1136 		} else if (!len){  in syslog_print()
1148 			if (!len)  in syslog_print()
1149 				len = -EFAULT;  in syslog_print()
1153 		len += n;  in syslog_print()
1159 	return len;  in syslog_print()
1165 	int len = 0;  in syslog_print_all()  local
1194 			len += msg_print_text(msg, prev, true, NULL, 0);  in syslog_print_all()
1204 		while (len > size && seq < log_next_seq) {  in syslog_print_all()
1207 			len -= msg_print_text(msg, prev, true, NULL, 0);  in syslog_print_all()
1216 		len = 0;  in syslog_print_all()
1217 		while (len >= 0 && seq < next_seq) {  in syslog_print_all()
1224 				len = textlen;  in syslog_print_all()
1232 			if (copy_to_user(buf + len, text, textlen))  in syslog_print_all()
1233 				len = -EFAULT;  in syslog_print_all()
1235 				len += textlen;  in syslog_print_all()
1254 	return len;  in syslog_print_all()
1257 int do_syslog(int type, char __user *buf, int len, bool from_file)  in do_syslog()  argument
1274 		if (!buf || len < 0)  in do_syslog()
1277 		if (!len)  in do_syslog()
1279 		if (!access_ok(VERIFY_WRITE, buf, len)) {  in do_syslog()
1287 		error = syslog_print(buf, len);  in do_syslog()
1296 		if (!buf || len < 0)  in do_syslog()
1299 		if (!len)  in do_syslog()
1301 		if (!access_ok(VERIFY_WRITE, buf, len)) {  in do_syslog()
1305 		error = syslog_print_all(buf, len, clear);  in do_syslog()
1327 		if (len < 1 || len > 8)  in do_syslog()
1329 		if (len < minimum_console_loglevel)  in do_syslog()
1330 			len = minimum_console_loglevel;  in do_syslog()
1331 		console_loglevel = len;  in do_syslog()
1383 SYSCALL_DEFINE3(syslog, int, type, char __user *, buf, int, len)  in SYSCALL_DEFINE3()  argument
1385 	return do_syslog(type, buf, len, SYSLOG_FROM_READER);  in SYSCALL_DEFINE3()
1393 static void call_console_drivers(int level, const char *text, size_t len)  in call_console_drivers()  argument
1397 	trace_console(text, len);  in call_console_drivers()
1414 		con->write(con, text, len);  in call_console_drivers()
1514 	size_t len;			/* length == 0 means unused buffer */  member
1528 	if (cont.len == 0)  in cont_flush()
1538 			  cont.ts_nsec, NULL, 0, cont.buf, cont.len);  in cont_flush()
1547 			  NULL, 0, cont.buf, cont.len);  in cont_flush()
1548 		cont.len = 0;  in cont_flush()
1552 static bool cont_add(int facility, int level, const char *text, size_t len)  in cont_add()  argument
1554 	if (cont.len && cont.flushed)  in cont_add()
1557 	if (cont.len + len > sizeof(cont.buf)) {  in cont_add()
1563 	if (!cont.len) {  in cont_add()
1573 	memcpy(cont.buf + cont.len, text, len);  in cont_add()
1574 	cont.len += len;  in cont_add()
1576 	if (cont.len > (sizeof(cont.buf) * 80) / 100)  in cont_add()
1585 	size_t len;  in cont_print_text()  local
1592 	len = cont.len - cont.cons;  in cont_print_text()
1593 	if (len > 0) {  in cont_print_text()
1594 		if (len+1 > size)  in cont_print_text()
1595 			len = size-1;  in cont_print_text()
1596 		memcpy(text + textlen, cont.buf + cont.cons, len);  in cont_print_text()
1597 		textlen += len;  in cont_print_text()
1598 		cont.cons = cont.len;  in cont_print_text()
1605 		cont.len = 0;  in cont_print_text()
1719 		if (cont.len && (lflags & LOG_PREFIX || cont.owner != current))  in vprintk_emit()
1740 		if (cont.len) {  in vprintk_emit()
1888 	size_t len;  member
1895 static void call_console_drivers(int level, const char *text, size_t len) {}  in call_console_drivers()  argument
2130 	size_t len;  in console_cont_flush()  local
2134 	if (!cont.len)  in console_cont_flush()
2145 	len = cont_print_text(text, size);  in console_cont_flush()
2148 	call_console_drivers(cont.level, text, len);  in console_cont_flush()
2201 		size_t len;  in console_unlock()  local
2211 			len = sprintf(text, "** %u printk messages dropped ** ",  in console_unlock()
2219 			len = 0;  in console_unlock()
2244 		len += msg_print_text(msg, console_prev, false,  in console_unlock()
2245 				      text + len, sizeof(text) - len);  in console_unlock()
2252 		call_console_drivers(level, text, len);  in console_unlock()
2842 			       char *line, size_t size, size_t *len)  in kmsg_dump_get_line_nolock()  argument
2868 	if (len)  in kmsg_dump_get_line_nolock()
2869 		*len = l;  in kmsg_dump_get_line_nolock()
2891 			char *line, size_t size, size_t *len)  in kmsg_dump_get_line()  argument
2897 	ret = kmsg_dump_get_line_nolock(dumper, syslog, line, size, len);  in kmsg_dump_get_line()
2924 			  char *buf, size_t size, size_t *len)  in kmsg_dump_get_buffer()  argument
2996 	if (len)  in kmsg_dump_get_buffer()
2997 		*len = l;  in kmsg_dump_get_buffer()