Quoting Eric W. Biederman (ebiederm@xxxxxxxxxxxx): > Glauber Costa <glommer@xxxxxxxxxxxxx> writes: > > > On 01/22/2013 01:11 PM, Eric W. Biederman wrote: > >> > >> The kernel support for user namespaces allows ordinary users to use > >> multiple uids and gids if they can get a trusted program to tell the > >> kernel the set of subordinate uids and gids they are allowed to use. > >> > >> This is my work to make that trusted program. > >> Two new files are added /etc/subuid /etc/subgid that specify > >> ranges of uids and gids that users may uses. > >> > >> useradd, and newusers are modifed to add users to those files. > >> > >> userdel is modeifed to remove users from those files. > >> > >> usermod is modified to give manual control of what goes in those files. > >> > >> newuidmap and newgidmap read the new files and update > >> /proc/[pid]/uid_map and /proc/[pid]/gid_map respectively > >> as requested by their command line parameters and as allowed > >> by the /etc/subuid and /etc/subgid. > >> > >> The following patches are against the current developent trunk > >> of pkg-shadow svn rev 3745. With minor tweaking of man/Makefile.am > >> these patches also apply to shadow 4.1.5. > >> > >> Eric W. Biederman (11): > >> Documentation for /etc/subuid and /etc/subgid > >> login.defs.5: Document the new variables in login.defs > >> Implement commonio_append. > >> Add backend support for suboridnate uids and gids > >> Implement find_new_sub_uids find_new_sub_gids > >> userdel: Add support for removing subordinate user and group ids. > >> useradd: Add support for subordinate user identifiers > >> Add support for detecting busy subordinate user ids > >> usermod: Add support for subordinate uids and gids. > >> newusers: Add support for assiging subordinate uids and gids. > >> newuidmap,newgidmap: New suid helpers for using subordinate uids and gids > > > > Hi, > > > > Is there any intention to merge this (or any later version thereof) ? > > I intend to start excluding uid ranges for containers usage in OpenVZ, > > and support for that in tooling would come in handy. > > I don't know what the state of the main pkg-shadow package is. I have > heard anything and the repository seems to have been dormant since the > last release almost a year ago. > > However the last I heard Serge was working on getting these changes into > Ubuntu. I need to get back to this hopefully later this week. However since the final userns patches won't be in the raring kernel, the merge request will become low priority. I expect it'll be easier to push in may (when the next devel release opens up) than now. > So the intention is to get this code merged but I don't know what more > needs to be done at this point. > > Eric > > > > _______________________________________________ > Containers mailing list > Containers@xxxxxxxxxxxxxxxxxxxxxxxxxx > https://lists.linuxfoundation.org/mailman/listinfo/containers _______________________________________________ Containers mailing list Containers@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linuxfoundation.org/mailman/listinfo/containers
