Re: [PATCH review 6/6] userns: Allow the userns root to mount tmpfs.

2013-01-27 Thread Gao feng
On 2013/01/26 10:26, Eric W. Biederman wrote: > > There is no backing store to tmpfs and file creation rules are the > same as for any other filesystem so it is semantically safe to allow > unprivileged users to mount it. ramfs is safe for the same reasons so > allow either flavor of tmpfs to be

Re: [PATCH review 6/6] userns: Allow the userns root to mount tmpfs.

2013-01-27 Thread Serge E. Hallyn
Quoting Eric W. Biederman (ebied...@xmission.com): > > There is no backing store to tmpfs and file creation rules are the > same as for any other filesystem so it is semantically safe to allow > unprivileged users to mount it. ramfs is safe for the same reasons so > allow either flavor of tmpfs t

[PATCH review 6/6] userns: Allow the userns root to mount tmpfs.

2013-01-25 Thread Eric W. Biederman
There is no backing store to tmpfs and file creation rules are the same as for any other filesystem so it is semantically safe to allow unprivileged users to mount it. ramfs is safe for the same reasons so allow either flavor of tmpfs to be mounted by a user namespace root user. The memory contr