8.48. Kmod-31

The Kmod package contains libraries and utilities for loading kernel modules

Approximate build time: less than 0.1 SBU
Required disk space: 12 MB

8.48.1. Installation of Kmod

Prepare Kmod for compilation:

./configure --prefix=/usr          \
            --sysconfdir=/etc      \
            --with-openssl         \
            --with-xz              \
            --with-zstd            \

The meaning of the configure options:


This option enables Kmod to handle PKCS7 signatures for kernel modules.

--with-xz, --with-zlib, and --with-zstd

These options enable Kmod to handle compressed kernel modules.

Compile the package:


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

Install the package and create symlinks for compatibility with Module-Init-Tools (the package that previously handled Linux kernel modules):

make install

for target in depmod insmod modinfo modprobe rmmod; do
  ln -sfv ../bin/kmod /usr/sbin/$target

ln -sfv kmod /usr/bin/lsmod

8.48.2. 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


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


Installs a loadable module in the running kernel


Loads and unloads kernel modules


Lists currently loaded modules


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


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


Unloads modules from the running kernel


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