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

Chapter 15. Networking Programs

rpcbind-1.2.6

Introduction to rpcbind

The rpcbind program is a replacement for portmap. It is required for import or export of Network File System (NFS) shared directories.

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

Package Information

Additional Downloads

rpcbind Dependencies

Required

libtirpc-1.3.3

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

Installation of rpcbind

There should be a dedicated user and group to take control of the rpcbind daemon after it is started. Issue the following commands as the root user: 

groupadd -g 28 rpc &&
useradd -c "RPC Bind Daemon Owner" -d /dev/null -g rpc \
        -s /bin/false -u 28 rpc

In order to get rpcbind to work properly, first fix the package to use correct service name: 

sed -i "/servname/s:rpcbind:sunrpc:" src/rpcbind.c

Install rpcbind by running the following commands: 

patch -Np1 -i ../rpcbind-1.2.6-vulnerability_fixes-1.patch &&

./configure --prefix=/usr       \
            --bindir=/usr/sbin  \
            --enable-warmstarts \
            --with-rpcuser=rpc  &&
make

This package does not come with a test suite.

Now, as the root user: 

make install

Command Explanations

--with-rpcuser=rpc: This switch is used so the rpcbind daemon will run as an unprivileged user instead of the root user.

Configuring rpcbind

Systemd Unit

Enable the systemd unit installed with the package: 

systemctl enable rpcbind

Contents

Installed Program: rpcbind and rpcinfo
Installed Libraries: None
Installed Directories: None

Short Descriptions

rpcbind

is a server that converts RPC program numbers into universal addresses. It must be running on the host to be able to make RPC calls on a server on that machine

rpcinfo

makes an RPC call to an RPC server and reports data according to the requested options