to userland as the errno without executing the system call.
``SECCOMP_RET_USER_NOTIF``:
- Results in a ``struct seccomp_notif`` message sent on the userspace
- notification fd, if it is attached, or ``-ENOSYS`` if it is not. See below
- on discussion of how to handle user notifications.
+ Results in a ``struct seccomp_notif`` message sent on the userspace
+ notification fd, if it is attached, or ``-ENOSYS`` if it is not. See
+ below on discussion of how to handle user notifications.
``SECCOMP_RET_TRACE``:
When returned, this value will cause the kernel to attempt to
call. If there is no tracer present, ``-ENOSYS`` is returned to
userland and the system call is not executed.
- A tracer will be notified if it requests ``PTRACE_O_TRACESECCOM``P
+ A tracer will be notified if it requests ``PTRACE_O_TRACESECCOMP``
using ``ptrace(PTRACE_SETOPTIONS)``. The tracer will be notified
of a ``PTRACE_EVENT_SECCOMP`` and the ``SECCOMP_RET_DATA`` portion of
the BPF program return value will be available to the tracer