sandbox(8) — Linux manual page


SANDBOX(8)                    User Commands                   SANDBOX(8)

NAME         top

       sandbox - Run cmd under an SELinux sandbox

SYNOPSIS         top

       sandbox [-C] [-s] [ -d DPI ] [-l level ] [[-M | -X]  -H homedir
       -T tempdir ] [-I includefile ] [ -W windowmanager ] [ -w
       windowsize ] [[-i file ]...] [ -t type ] cmd

       sandbox [-C] [-s] [ -d DPI ] [-l level ] [[-M | -X]  -H homedir
       -T tempdir ] [-I includefile ] [ -W windowmanager ] [ -w
       windowsize ] [[-i file ]...] [ -t type ] -S

DESCRIPTION         top

       Run the cmd application within a tightly confined SELinux domain.
       The default sandbox domain only allows applications the ability
       to read and write stdin, stdout and any other file descriptors
       handed to it. It is not allowed to open any other files.  The -M
       option will mount an alternate homedir and tmpdir to be used by
       the sandbox.

       If you have the policycoreutils-sandbox package installed, you
       can use the -X option and the -M option.  sandbox -X allows you
       to run X applications within a sandbox.  These applications will
       start up their own X Server and create a temporary home directory
       and /tmp.  The default SELinux policy does not allow any
       capabilities or network access.  It also prevents all access to
       the users other processes and files.  Files specified on the
       command that are in the home directory or /tmp will be copied
       into the sandbox directories.

       If directories are specified with -H or -T the directory will
       have its context modified with chcon(1) unless a level is
       specified with -l.  If the MLS/MCS security level is specified,
       the user is responsible to set the correct labels.

       -h --help
              display usage message

       -H --homedir
              Use alternate homedir to mount over your home directory.
              Defaults to temporary. Requires -X or -M.

       -i --include
              Copy this file into the appropriate temporary sandbox
              directory. Command can be repeated.

       -I --includefile
              Copy all files listed in inputfile into the appropriate
              temporary sandbox directories.

       -l --level
              Specify the MLS/MCS Security Level to run the sandbox
              with.  Defaults to random.

       -M --mount
              Create a Sandbox with temporary files for $HOME and /tmp.

       -s --shred
              Shred temporary files created in $HOME and /tmp, before

       -t --type
              Use alternate sandbox type, defaults to sandbox_t or
              sandbox_x_t for -X.

              sandbox_t -    No X, No Network Access, No Open,
              read/write on passed in file descriptors.
              sandbox_min_t  -    No Network Access
              sandbox_x_t    -    Ports for X applications to run
              sandbox_web_t  -    Ports required for web browsing
              sandbox_net_t  -         Network ports (for server
              sandbox_net_client_t     -    All network ports

       -T --tmpdir
              Use alternate temporary directory to mount on /tmp.
              Defaults to tmpfs. Requires -X or -M.

       -S --session
              Run a full desktop session, Requires level, and home and

       -w --windowsize

              Specifies the windowsize when creating an X based Sandbox.
              The default windowsize is 1000x700.

       -W --windowmanager
              Select alternative window manager to run within sandbox
              -X.  Default to /usr/bin/openbox.

       -X     Create an X based Sandbox for gui apps, temporary files
              for $HOME and /tmp, secondary Xserver, defaults to

       -d --dpi
              Set the DPI value for the sandbox X Server. Defaults to
              the current X Sever DPI.

       -C --capabilities Use capabilities within the
              sandbox. By default applications executed within the
              sandbox will not be allowed to use capabilities (setuid
              apps), with the -C flag, you can use programs requiring

SEE ALSO         top

              seunshare(8), selinux(8)

AUTHOR         top

       This manual page was written by Dan Walsh <> and
       Thomas Liu <>

COLOPHON         top

       This page is part of the selinux (Security-Enhanced Linux user-
       space libraries and tools) project.  Information about the
       project can be found at 
       ⟨⟩.  If you have a
       bug report for this manual page, see
       This page was obtained from the project's upstream Git repository
       ⟨⟩ on 2021-08-27.  (At
       that time, the date of the most recent commit that was found in
       the repository was 2021-08-23.)  If you discover any rendering
       problems in this HTML version of the page, or you believe there
       is a better or more up-to-date source for the page, or you have
       corrections or improvements to the information in this COLOPHON
       (which is not part of the original manual page), send a mail to

sandbox                         May 2010                      SANDBOX(8)

Pages that refer to this page: sandbox(5)seunshare(8)