Beyond Linux® From Scratch (systemd Edition) - Version 11.3

Chapter 12. System Utilities

pciutils-3.9.0

Introduction to PCI Utils

The PCI Utils package contains a set of programs for listing PCI devices, inspecting their status and setting their configuration registers.

This package is known to build and work properly using an LFS 11.3 platform.

Package Information

pciutils Dependencies

Recommended

cURL-7.88.1, Wget-1.21.3, or Lynx-2.8.9rel.1 (for the update-pciids script to function correctly).

User Notes: https://wiki.linuxfromscratch.org/blfs/wiki/pciutils

Installation of PCI Utils

Install PCI Utils by running the following commands: 

make PREFIX=/usr                \
     SHAREDIR=/usr/share/hwdata \
     SHARED=yes

This package does not come with a test suite.

Now, as the root user: 

make PREFIX=/usr                \
     SHAREDIR=/usr/share/hwdata \
     SHARED=yes                 \
     install install-lib        &&

chmod -v 755 /usr/lib/libpci.so

Command Explanations

SHARED=yes: This parameter enables building of the shared library instead of the static one.

ZLIB=no: This option prevents compression of the pci.ids file.

Configuring PCI Utils

The pci.ids data file is constantly being updated. To get a current version of this file, run update-pciids as the root user. This program requires the Which-2.21 script or program to find cURL-7.88.1, Lynx-2.8.9rel.1, or Wget-1.21.3 which are used to download the most current file, and then replace the existing file in /usr/share/hwdata.

You should update the /usr/share/hwdata/pci.ids file periodically. Execute the following commands, as the root user, to create a systemd timer to update it weekly on Sundays at 2:30 A.M. (local time): 

cat > /usr/lib/systemd/system/update-pciids.service << "EOF" &&
[Unit]
Description=Update pci.ids file
Documentation=man:update-pciids(8)
DefaultDependencies=no
After=local-fs.target network-online.target
Before=shutdown.target

[Service]
Type=oneshot
RemainAfterExit=yes
ExecStart=/usr/sbin/update-pciids
EOF
cat > /usr/lib/systemd/system/update-pciids.timer << "EOF" &&
[Unit]
Description=Update pci.ids file weekly

[Timer]
OnCalendar=Sun 02:30:00
Persistent=true

[Install]
WantedBy=timers.target
EOF
systemctl enable update-pciids.timer

Contents

Installed Programs: lspci, setpci, and update-pciids
Installed Library: libpci.so
Installed Directory: /usr/include/pci and /usr/share/hwdata

Short Descriptions

lspci

is a utility for displaying information about all PCI buses in the system and all devices connected to them

setpci

is a utility for querying and configuring PCI devices

update-pciids

fetches the current version of the PCI ID list.

libpci.so

is library that allows applications to access the PCI subsystem