Suraj Deshmukh

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Writing your own Seccomp profiles for Docker

Understanding the seccomp profile json format

Suraj Deshmukh

3-Minute Read

A large number of system calls are exposed to every userland process with many of them going unused for the entire lifetime of the process. A certain subset of userland applications benefit by having a reduced set of available system calls. The resulting set reduces the total kernel surface exposed to the application. System call filtering is meant for use with those applications. Seccomp filtering provides a means for a process to specify a filter for incoming system calls.

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I am a Software Engineer at Kinvolk, working on various tooling around container technology like Docker, Kubernetes.