linux-kernel - [PATCH 2/2] ver_linux: Do not check for ver

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Message-Id: <20180531192247.9003-2-alexander.kapshuk@gmail.com>
Date:   Thu, 31 May 2018 22:22:47 +0300
From:   Alexander Kapshuk <alexander.kapshuk@...il.com>
To:     linux-kernel@...r.kernel.org
Cc:     gregkh@...uxfoundation.org, alexander.kapshuk@...il.com
Subject: [PATCH 2/2] ver_linux: Do not check for ver_linux pattern in version function

Checking whether output of commands matches the ver_linux pattern in
the version function is original shell implementation legacy code. When
the original implementation failed to locate a particular utility,
it generated error output along the lines of:

ver_linux:line number: command not found.

The awk implementation, does not contain the name of the script within the
body of the error message returned by the subshell when a given utility
fails to be located. The error message returned is along the lines of:

sh: name of utility: command not found

Safeguarding against the ver_linux pattern being found in the output
being parsed may thus be safely omitted.

Signed-off-by: Alexander Kapshuk <alexander.kapshuk@...il.com>
---
 scripts/ver_linux | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/scripts/ver_linux b/scripts/ver_linux
index e1dc041f903f..a6c728db05ce 100755
--- a/scripts/ver_linux
+++ b/scripts/ver_linux
@@ -70,7 +70,7 @@ BEGIN {
 function version(cmd,    ver) {
 	cmd = cmd " 2>&1"
 	while (cmd | getline > 0) {
-		if (!/ver_linux/ && match($0, /[0-9]+([.]?[0-9]+)+/)) {
+		if (match($0, /[0-9]+([.]?[0-9]+)+/)) {
 			ver = substr($0, RSTART, RLENGTH)
 			break
 		}
-- 
2.17.1