The Design and Implementation of the Anykernel and Rump Kernels

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RUMPHIJACK(3) NetBSD Library Functions Manual RUMPHIJACK(3)
to the rump kernel. For example, if ‘‘path’’ is
/rump, accessing /rump/dev/bpf will cause /dev/bpf to
be accessed in the rump kernel. In contrast, if
‘‘blanket’’ contains /dev/bpf, accessing /dev/bpf
will cause an access to /dev/bpf in the rump kernel.
In case the current working directory is changed to a
blanketed directory, the current working directory
will still be reported with the rump prefix, if
available. Note, though, that some shells cache the
directory and may report something else. In case no
rump path prefix has been configured, the raw rump
directory is reported.
It is recommended to supply blanketed pathnames as
specific as possible, i.e. use /dev/bpf instead of
/dev unless necessary to do otherwise. Also, note
that the blanket prefix does not follow directory
borders. In other words, setting the blanket for
/dev/bpf means it is set for all pathnames with the
given prefix, not just ones in /dev.
‘‘socket’’
The specifier value contains a colon-separated list
of which protocol families should be hijacked. The
special value ‘‘all’’ can be specified as the first
element. It indicates that all protocol families
should be hijacked. Some can then be disabled by
prepending ‘‘no’’ to the name of the protocol family.
For example, ‘‘inet:inet6’’ specifies that only
PF_INET and PF_INET6 sockets should be hijacked,
NetBSD 5.99.48 March 14, 2011 NetBSD 5.99.48