From: Shiji Yang <yangshiji66@outlook.com>
Date: Tue, 17 Jun 2025 14:06:38 +0000 (+0800)
Subject: base-files: introduce a function to get kernel version number
X-Git-Tag: v25.12.0-rc1~1972
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=a0fe3cfb62fbf0b5f599c90e488727f493223429;p=thirdparty%2Fopenwrt.git

base-files: introduce a function to get kernel version number

A new function "get_linux_version()" to normalize and print the
kernel version as an integer. In some migration scripts, it is
useful for checking the Linux kernel version.

Signed-off-by: Shiji Yang <yangshiji66@outlook.com>
Link: https://github.com/openwrt/openwrt/pull/19172
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
---

diff --git a/package/base-files/files/lib/functions/system.sh b/package/base-files/files/lib/functions/system.sh
index f43281b5dce..eaed0fba110 100644
--- a/package/base-files/files/lib/functions/system.sh
+++ b/package/base-files/files/lib/functions/system.sh
@@ -315,3 +315,10 @@ macaddr_canonicalize() {
 dt_is_enabled() {
 	grep -q okay "/proc/device-tree/$1/status"
 }
+
+get_linux_version() {
+	local ver=$(uname -r)
+	local minor=${ver%\.*}
+
+	printf "%d%02d%03d" ${ver%%\.*} ${minor#*\.} ${ver##*\.} 2>/dev/null
+}