ver_linux: use 'udevadm', instead of 'udevinfo'

'udevinfo' no longer seems to be available across various
distros. 'udevadm' seems to be the currently valid way to look up the
'udev' version.

Tested on:
Gentoo Linux
Debian 6.0.10
Oracle Linux Server release 7.1

Rely on regex to find the version number, rather than rely on numerical input to be found in a particular input field.
Proposed implementation also eliminates the necessity to invoke 'grep' + 'awk'.

Signed-off-by: Alexander Kapshuk <alexander.kapshuk@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/scripts/ver_linux b/scripts/ver_linux
index 1c6ec2244ae8ed31b8ca3e044b22f8f36ca95cbb..f839be33bcb4a12ee8fec37a1a1b19e9222b5e1d 100755 (executable)
--- a/scripts/ver_linux
+++ b/scripts/ver_linux
@@ -164,7 +164,12 @@ awk '/^expr/{
        substr($0,RSTART,RLENGTH))
 }'
 
-udevinfo -V 2>&1 | grep version | awk '{print "udev                  ", $3}'
+udevadm --version 2>&1 |
+awk '/[0-9]+([.]?[0-9]+)+/ && !/not found$/{
+       match($0, /[0-9]+([.]?[0-9]+)+/)
+       printf("Udev\t\t\t%s\n",
+       substr($0,RSTART,RLENGTH))
+}'
 
 iwconfig --version 2>&1 | awk \
 '(NR==1 && ($3 == "version")) {print "wireless-tools        ",$4}'