SYSTRACE(1)                OpenBSD Reference Manual                SYSTRACE(1)

NAME
     systrace - generate and enforce system call policies

SYNOPSIS
     systrace [-AaCeitUuV] [-c user:group] [-d policydir] [-E logfile]
              [-f file] [-g gui] [-p pid] command ...

DESCRIPTION
     The systrace utility monitors and controls an application's access to the
     system by enforcing access policies for system calls.  The systrace util-
     ity might be used to trace an untrusted application's access to the sys-
     tem.  Alternatively, it might be used to protect the system from software
     bugs (such as buffer overflows) by constraining a daemon's access to the
     system.  Its privilege elevation feature can be used to obviate the need
     to run large, untrusted programs as root when only one or two system
     calls require root privilege.

     The access policy can be generated interactively or obtained from a poli-
     cy file.  Interactive policy generation will be performed by the
     ``notification user agent'', normally xsystrace(1), unless text mode is
     specified via -t.

     When running in ``automatic enforcement'' mode, operations not covered by
     the policy raise an alarm and allow a user to refine the currently con-
     figured policy.