.Dd April 13, 2015
.Dt XBPS-UUNSHARE 8
.Sh NAME
.Nm xbps-uunshare
.Nd XBPS utility to chroot and bind mount with linux user namespaces
.Sh SYNOPSYS
.Nm xbps-uunshare
.Op OPTIONS
.Ar CHROOTDIR
.Ar COMMAND
.Op ARGS
.Sh DESCRIPTION
The
.Nm
utility allows users to chroot and bind mount required pseudo-filesystems
(/dev, /proc and /sys) in the target
.Ar CHROOTDIR
to execute
.Ar COMMAND .
The
.Nm
utility uses by default Linux namespaces to isolate IPC, PIDs and mounts to
the calling process. Thanks to
.Xr user_namespaces 7
the user does not need any privilege to create an isolated lightweight container.
.Sh OPTIONS
.Bl -tag -width -x
.It Fl D Ar dir
Specifies a full path to a directory that will be bind mounted at
.Ar CHROOTDIR/void-packages .
.It Fl H Ar dir
Specifies a full path to a directory that will be bind mounted at
.Ar CHROOTDIR/host .
.It Fl S Ar dir
Specifies a full path to a directory to allow shm functionality to be used
in the target
.Ar CHROOTDIR/dir .
If your system uses
.Sy /dev/shm
use it, otherwise use
.Sy /run/shm .
.El
.Sh NOTES
The
.Nm
utility uses Linux specific features (namespaces) and it's not meant to be portable to
other Operating Systems. The following kernel options must be enabled:
.Pp
.Bl -tag -width CONFIG_NAMESPACES -compact -offset indent
.It Sy CONFIG_NAMESPACES
.It Sy CONFIG_IPC_NS
.It Sy CONFIG_USER_NS
.It Sy CONFIG_UTS_NS
.El
.Sh SEE ALSO
.Xr xbps.d 5 ,
.Xr xbps-checkvers 8 ,
.Xr xbps-create 8 ,
.Xr xbps-dgraph 8 ,
.Xr xbps-install 8 ,
.Xr xbps-pkgdb 8 ,
.Xr xbps-query 8 ,
.Xr xbps-reconfigure 8 ,
.Xr xbps-rindex 8 ,
.Xr xbps-uchroot 8
.Sh AUTHORS
.An Juan Romero Pardines <xtraeme@gmail.com>
.Sh BUGS
Probably, but I try to make this not happen. Use it under your own
responsability and enjoy your life.
.Pp
Report bugs in https://github.com/voidlinux/xbps/issues