Zirconium Linux From Scratch - Version r12.4-45-systemd

Chapter 5. Installing Basic System Software

Kmod-34.2

The Kmod package contains libraries and utilities for loading kernel modules

Approximate build time: less than 0.1 SBU
Required disk space: 6.7 MB
SHA256 Checksum: 5a5d5073070cc7e0c7a7a3c6ec2a0e1780850c8b47b3e3892226b93ffcb9cb54

Installation of Kmod

Prepare Kmod for compilation:

meson setup build --prefix=/usr \
            --buildtype=release \
            -D manpages=false

The meaning of the configure options:

-D manpages=false

This option disables generating the man pages which requires an external program.

Compile the package:

ninja -C build

The test suite of this package requires raw kernel headers (not the “sanitized” kernel headers installed earlier), which are beyond the scope of LFS.

Now install the package:

ninja -C build install

Contents of Kmod

Installed programs: depmod (link to kmod), insmod (link to kmod), kmod, lsmod (link to kmod), modinfo (link to kmod), modprobe (link to kmod), and rmmod (link to kmod)
Installed library: libkmod.so

Short Descriptions

depmod

Creates a dependency file based on the symbols it finds in the existing set of modules; this dependency file is used by modprobe to automatically load the required modules

insmod

Installs a loadable module in the running kernel

kmod

Loads and unloads kernel modules

lsmod

Lists currently loaded modules

modinfo

Examines an object file associated with a kernel module and displays any information that it can glean

modprobe

Uses a dependency file, created by depmod, to automatically load relevant modules

rmmod

Unloads modules from the running kernel

libkmod

This library is used by other programs to load and unload kernel modules