TechEuphoria

Printing the Linux kernel version

by Conrad Gomes on

The kernel version that a kernel module is built with can differ from the kernel version it is running on. The version of the kernel that the module is running on is shown in the first log and the version of the kernel is compiled with is shown in the second log in the version_init function:

#include <linux/init.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/utsname.h>
#include <generated/utsrelease.h>

static int __init version_init(void)
{
        int i = 0;

        pr_alert("Kernel module running of version %s\n", utsname()->release);
        pr_alert("Kernel module compiled with version %s\n", UTS_RELEASE);
        return 0;
}

static void __exit version_exit(void)
{
        pr_alert("Over and out!\n");
}

module_init(version_init);
module_exit(version_exit);

MODULE_LICENSE("GPL");
MODULE_AUTHOR("zeuzoix");
MODULE_DESCRIPTION("Kernel Module Version Example Module");

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