2014-08-23 12:50:07 +05:30
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.Dd August 23, 2014
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2014-04-18 13:15:25 +05:30
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.Os Void Linux
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.Dt xbps-uchroot 8
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.Sh NAME
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.Nm xbps-uchroot
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.Nd XBPS utility to chroot and bind mount with linux namespaces
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.Sh SYNOPSYS
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.Nm xbps-uchroot
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.Op OPTIONS
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.Ar CHROOTDIR
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.Ar COMMAND
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.Op ARGS
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.Sh DESCRIPTION
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The
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.Nm
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utility allows users to chroot and bind mount required pseudo-filesystems
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(/dev, /proc and /sys) in the target
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.Ar CHROOTDIR
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to execute
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.Ar COMMAND .
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The
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.Nm
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utility uses by default Linux namespaces to isolate IPC, PIDs and mounts to
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the calling process. If running in a OpenVZ container, these namespace features
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are simply disabled.
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.Sh OPTIONS
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.Bl -tag -width -x
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.It Fl D Ar dir
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Specifies a full path to a directory that will be bind mounted at
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2014-09-26 17:54:06 +05:30
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.Ar CHROOTDIR/void-packages .
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2014-04-18 13:15:25 +05:30
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.It Fl H Ar dir
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Specifies a full path to a directory that will be bind mounted at
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.Ar CHROOTDIR/host .
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.It Fl S Ar dir
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Specifies a full path to a directory to allow shm functionality to be used
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in the target
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.Ar CHROOTDIR/dir .
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If your system uses
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.Sy /dev/shm
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use it, otherwise use
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.Sy /run/shm .
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2014-08-23 12:50:07 +05:30
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.El
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2014-04-18 13:15:25 +05:30
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.Sh SECURITY
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The
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.Nm
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executable must be setgid to function properly and shall only be executable by a specific
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group to avoid security issues (4750).
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.Sh NOTES
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The
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.Nm
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utility uses Linux specific features (namespaces) and it's not meant to be portable to
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2014-08-23 12:50:07 +05:30
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other Operating Systems. The following kernel options must be enabled:
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.Pp
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.Bl -tag -compact -offset indent
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.It Sy CONFIG_NAMESPACES
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.It Sy CONFIG_IPC_NS
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.It Sy CONFIG_PID_NS
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.El
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2014-04-18 13:15:25 +05:30
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.Sh SEE ALSO
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.Xr xbps-checkvers 8 ,
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.Xr xbps-create 8 ,
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.Xr xbps-dgraph 8 ,
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.Xr xbps-install 8 ,
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.Xr xbps-pkgdb 8 ,
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.Xr xbps-query 8 ,
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.Xr xbps-reconfigure 8 ,
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.Xr xbps-rindex 8
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.Sh AUTHORS
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.An Juan Romero Pardines <xtraeme@gmail.com>
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.Sh BUGS
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Probably, but I try to make this not happen. Use it under your own
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responsability and enjoy your life.
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.Pp
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Report bugs in https://github.com/voidlinux/xbps/issues
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