Untie 0.3

Untie is a small tool used to create namespaces and lauch processes in them. It uses Linuxs virtualization features.
The project allows the user to call clone(2) with any flag as a parameter. Note that superuser privileges are needed to create namespaces.
Untie is a small tool used to create namespaces and lauch processes in them. It uses Linuxs virtualization features. Basically it allows to call clone(2) with any flag as parameter. Note that superuser privileges are needed to create namespaces.
Here is a sample usage with the mount namespace:
[root ~]# untie -h
untie 0.1
Usage: untie [OPTIONS]... [COMMAND]...
-h, --help Print help and exit
-V, --version Print version and exit
--mount New mount namespace (default=off)
--uname New uname (default=off)
--ipc New IPC context (default=off)
--mask=MASK Pass user defined flag
[root ~]# mkdir dir1 dir2
[root ~]# touch dir1/file1 dir2/file2
[root ~]# untie --mount
A new shell has been spawned by untie
[root ~]# mount --bind dir1 dir2
[root ~]# ls dir1 dir2
dir1:
file1
dir2:
file1
[root ~]# exit
Back to the original namespace
[root ~]# ls dir1 dir2
dir1:
file1
dir2:
file2
[root ~]#
In this "demo" a new mount namespace is created and a bind mount is made in this new namespace. This mount is invisible to other namespaces. Leaving the namespace destroys it and cancels the mount.
Enhancements:
- The possibility of running a program as a daemon, the setting of an alarm timer, the nice level setting, and changing the scheduling policy as well as its priority were added.