SANDBOX(8)

NAME
sandbox - Run cmd under an SELinux sandbox

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

DESCRIPTION

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 deleting.

-t --type
    Use alternate sandbox type, defaults to sandbox_t or sandbox_x_t for -X. Examples:
    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 locally
    sandbox_web_t    -    Ports required for web browsing
    sandbox_net_t    -    Network ports (for server software)
    sandbox_net_client_t    -    All network ports

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

-R --runuserdir
    Use alternate temporary directory to mount on XDG_RUNTIME_DIR (/run/user/$UID).

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

-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 sandbox_x_t

-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 capabilities.

SEE ALSO

runcon(1), seunshare(8), selinux(8)

EXAMPLE
Run a graphical application inside the sandbox
# sandbox -X evince
Run a graphical application that requires the use of network
# sandbox ‑X ‑t sandbox_web_t firefox
Preserve data from one session to the next
# mkdir -p ~/sandbox/home ~/sandbox/tmp
# sandbox -H ~/sandbox/home -T ~/sandbox/tmp -X libreoffice --writer

AUTHOR
This manual page was written by Dan Walsh <dwalsh@redhat.com> and Thomas Liu <tliu@fedoraproject.org>