multi_vfs_dhcpcd example

Example use of the kl.rump.Dhcpcd program.

The Dhcpcd program is an implementation of a DHCP client, which gets network interface parameters from an external DHCP server in the background and passes them to a virtual file system (hereinafter referred to as a VFS).

The example also demonstrates the use of different VFSes in a single solution. The example uses different VFS to access the functions for working with the file system and functions for working with the network:

• The VfsNet program is used for working with the network.
• The VfsSdCardFs program is used to work with the file system.

The Client program uses standard libc library functions for getting information on network interfaces (ioctl). These functions are converted into queries to the VFS program via IPC.

The CMake system, which is included with KasperskyOS Community Edition, is used to build and run the example.

Supplied resources

The ./resources/hdd/etc directory contains configuration files for the VFS and Dhcpcd programs. The standard syntax of dhcpcd.conf is used for the Dhcpcd program configuration.

The CMakeLists.txt root file defines the values of variables that determine the selected configuration file:

• DHCPCD_FALLBACK

  Dynamically receive the parameters of network interfaces from an external DHCP server but statically define the parameters if the DHCP server is not available. This value is used by default.

• DHCPCD_DYNAMIC

  Dynamically receive the parameters of network interfaces from an external DHCP server.

• DHCPCD_STATIC

  Statically define the parameters of network interfaces.

Example files

The code of the example and build scripts are available at the following path:

/opt/KasperskyOS-Community-Edition-<version>/examples/multi_vfs_dhcpcd

Building and running example

See Building and running examples section.