From: Peter Korsgaard <jacmet@sunsite.dk>
Date: Sat, 5 Jan 2013 23:07:17 +0000 (+0100)
Subject: dmesg: handle multi-char log levels
X-Git-Tag: 1_21_0~36
X-Git-Url: https://git.librecmc.org/?a=commitdiff_plain;h=3917fa32dce8c887d0a87d0d2f4490f1b89b51d0;p=oweals%2Fbusybox.git

dmesg: handle multi-char log levels

Since Linux 3.5 (7ff9554bb5: printk: convert byte-buffer to variable-length
record buffer), klog buffer can now contain log lines with multi-char
loglevel indicators (<[0-9]+>) - So we can no longer just skip 3 bytes.

Instead skip past the terminating '>' like util-linux does.

function                                             old     new   delta
dmesg_main                                           266     280     +13
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 1/0 up/down: 13/0)               Total: 13 bytes

Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
---

diff --git a/util-linux/dmesg.c b/util-linux/dmesg.c
index 6505da54b..81ba1c9d1 100644
--- a/util-linux/dmesg.c
+++ b/util-linux/dmesg.c
@@ -59,16 +59,15 @@ int dmesg_main(int argc UNUSED_PARAM, char **argv)
 		int last = '\n';
 		int in = 0;
 
-		/* Skip <#> at the start of lines */
+		/* Skip <[0-9]+> at the start of lines */
 		while (1) {
 			if (last == '\n' && buf[in] == '<') {
-				in += 3;
-				if (in >= len)
-					break;
+				while (buf[in++] != '>' && in < len)
+					;
+			} else {
+				last = buf[in++];
+				putchar(last);
 			}
-			last = buf[in];
-			putchar(last);
-			in++;
 			if (in >= len)
 				break;
 		}