1.\" $NetBSD: rumphijack.3,v 1.2 2011/01/25 14:05:42 pooka Exp $ 2.\" 3.\" Copyright (c) 2011 Antti Kantee. All rights reserved. 4.\" 5.\" Redistribution and use in source and binary forms, with or without 6.\" modification, are permitted provided that the following conditions 7.\" are met: 8.\" 1. Redistributions of source code must retain the above copyright 9.\" notice, this list of conditions and the following disclaimer. 10.\" 2. Redistributions in binary form must reproduce the above copyright 11.\" notice, this list of conditions and the following disclaimer in the 12.\" documentation and/or other materials provided with the distribution. 13.\" 14.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24.\" SUCH DAMAGE. 25.\" 26.Dd January 25, 2011 27.Dt RUMPHIJACK 3 28.Os 29.Sh NAME 30.Nm rumphijack 31.Nd System call hijack library 32.Sh LIBRARY 33used by 34.Xr ld.so 1 35.Sh DESCRIPTION 36The 37.Xr ld.so 1 38runtime linker can be instructed to load 39.Nm 40between the main object and other libraries. 41This enables 42.Nm 43to capture and redirect system call requests to a rump kernel instead 44of the host kernel. 45.Pp 46Currently 47.Nm 48supports only TCP/IP related system calls. 49The set of supported subsystems may change later along with the usage 50of the library. 51.Sh EXAMPLES 52Use an alternate TCP/IP stack for firefox: 53.Bd -literal -offset indent 54$ setenv RUMP_SERVER unix:///tmp/tcpip 55$ setenv LD_PRELOAD /usr/lib/librumphijack.so 56$ firefox 57.Ed 58.Sh SEE ALSO 59.Xr ld.so 1 , 60.Xr rump_server 1 , 61.Xr rump 3 , 62.Xr rump_sp 7 63