124 lines
3.6 KiB
Groff
124 lines
3.6 KiB
Groff
.\" Copyright (c) 2015-2016 Nuxi, https://nuxi.nl/
|
|
.\"
|
|
.\" Redistribution and use in source and binary forms, with or without
|
|
.\" modification, are permitted provided that the following conditions
|
|
.\" are met:
|
|
.\" 1. Redistributions of source code must retain the above copyright
|
|
.\" notice, this list of conditions and the following disclaimer.
|
|
.\" 2. Redistributions in binary form must reproduce the above copyright
|
|
.\" notice, this list of conditions and the following disclaimer in the
|
|
.\" documentation and/or other materials provided with the distribution.
|
|
.\"
|
|
.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
|
.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
|
.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
.\" SUCH DAMAGE.
|
|
.\"
|
|
.\" $FreeBSD$
|
|
.Dd August 24, 2016
|
|
.Dt CLOUDABI 4
|
|
.Os
|
|
.Sh NAME
|
|
.Nm cloudabi ,
|
|
.Nm cloudabi32 ,
|
|
.Nm cloudabi64
|
|
.Nd CloudABI support
|
|
.Sh SYNOPSIS
|
|
Support for 32-bit CloudABI executables can be compiled into the kernel
|
|
by adding this line to the kernel configuration file:
|
|
.Bd -ragged -offset indent
|
|
.Cd "options COMPAT_CLOUDABI32"
|
|
.Ed
|
|
.Pp
|
|
Similarly,
|
|
support for 64-bit CloudABI executables can be enabled by adding this
|
|
line:
|
|
.Bd -ragged -offset indent
|
|
.Cd "options COMPAT_CLOUDABI64"
|
|
.Ed
|
|
.Pp
|
|
CloudABI support can also be loaded at boot time from
|
|
.Xr loader.conf 5 :
|
|
.Bd -literal -offset indent
|
|
cloudabi_load="YES"
|
|
cloudabi32_load="YES"
|
|
cloudabi64_load="YES"
|
|
.Ed
|
|
.Sh DESCRIPTION
|
|
CloudABI is a POSIX-like pure capability-based runtime environment,
|
|
similar to
|
|
.Xr capsicum 4 .
|
|
It can be used to develop applications that are cross-platform,
|
|
easier to test,
|
|
and hardened against security exploits.
|
|
.Pp
|
|
Support for CloudABI on
|
|
.Fx
|
|
consists of three separate kernel modules.
|
|
The
|
|
.Nm cloudabi
|
|
kernel module implements all of the system calls that do not depend on
|
|
data structures that differ between hardware architectures.
|
|
.Pp
|
|
The
|
|
.Nm cloudabi32
|
|
and
|
|
.Nm cloudabi64
|
|
kernel modules provide implementations of all of the machine-dependent
|
|
system calls,
|
|
assuming that pointers stored in data structures are either 32 bits or
|
|
64 bits in size.
|
|
These modules also provide the image activators that load and start ELF
|
|
executables.
|
|
.Pp
|
|
Though the
|
|
.Nm cloudabi
|
|
module can be loaded on any architecture supported by
|
|
.Fx ,
|
|
the
|
|
.Nm cloudabi32
|
|
module is only available on i386 and amd64.
|
|
The same holds for the
|
|
.Nm cloudabi64
|
|
module,
|
|
which is only available for amd64 and arm64.
|
|
.Pp
|
|
A full cross compilation toolchain for CloudABI is available in the
|
|
.Pa devel/cloudabi-toolchain
|
|
port.
|
|
.Pp
|
|
The
|
|
.Pa sysutils/cloudabi-utils
|
|
port provides the
|
|
.Xr cloudabi-run 1
|
|
utility.
|
|
.Xr cloudabi-run 1
|
|
can be used to safely execute CloudABI processes with access to a
|
|
restricted set of resources.
|
|
.Sh SEE ALSO
|
|
.Xr cloudabi-run 1 ,
|
|
.Xr capsicum 4 ,
|
|
.Xr linux 4 ,
|
|
.Xr elf 5
|
|
.Pp
|
|
CloudABI for FreeBSD:
|
|
.Pa https://nuxi.nl/cloudabi/freebsd/ .
|
|
.Pp
|
|
cloudlibc on GitHub:
|
|
.Pa https://github.com/NuxiNL/cloudlibc .
|
|
.Pp
|
|
The CloudABI Ports Collection on GitHub:
|
|
.Pa https://github.com/NuxiNL/cloudabi-ports .
|
|
.Sh HISTORY
|
|
CloudABI support first appeared in
|
|
.Fx 11.0 .
|
|
.Sh AUTHORS
|
|
.An Nuxi : Pa https://nuxi.nl/ .
|