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Author SHA1 Message Date
Michael Crosby
935520b224 Always symlink /dev/ptmx for libcontainer 
Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@crosbymichael.com> (github: crosbymichael)
 2014-03-13 14:31:09 -07:00
Alexander Larsson
eebaba3215 Move all bind-mounts in the container inside the namespace 
This moves the bind mounts like /.dockerinit, /etc/hostname, volumes,
etc into the container namespace, by setting them up using lxc.

This is useful to avoid littering the global namespace with a lot of
mounts that are internal to each container and are not generally
needed on the outside. In particular, it seems that having a lot of
mounts is problematic wrt scaling to a lot of containers on systems
where the root filesystem is mounted --rshared.

Note that the "private" option is only supported by the native driver, as
lxc doesn't support setting this. This is not a huge problem, but it does
mean that some mounts are unnecessarily shared inside the container if you're
using the lxc driver.

Docker-DCO-1.1-Signed-off-by: Alexander Larsson <alexl@redhat.com> (github: alexlarsson)
 2014-03-13 20:01:29 +01:00
srid
115f88b346 nsinit: prefix errors with their source 
Docker-DCO-1.1-Signed-off-by: Sridhar Ratnakumar <github@srid.name> (github: srid)
 2014-03-10 17:08:50 -07:00
Michael Crosby
da605a43d6 Add env var to toggle pivot root or ms_move 
Use the  DOCKER_RAMDISK env var to tell the native driver not to use
a pivot root when setting up the rootfs of a container.
Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@crosbymichael.com> (github: crosbymichael)
 2014-03-06 19:30:52 -08:00
Michael Crosby
ca93316795 Revert "Revert "libcontainer: Use pivot_root instead of chroot"" 
This reverts commit 82f797f14096430c3edbace1cd30e04a483ec41f.

Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@crosbymichael.com> (github: crosbymichael)
 2014-03-06 17:19:59 -08:00
Michael Crosby
57e7760c26 Revert "Revert "libcontainer: Use MS_PRIVATE instead of MS_SLAVE"" 
This reverts commit bd263f5b15b51747e3429179fef7fcb425ccbe4a.

Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@crosbymichael.com> (github: crosbymichael)
 2014-03-06 17:19:47 -08:00
unclejack
0718fb409c Merge pull request #4512 from crosbymichael/no-pivot-root 
No pivot root because of ramdisk
 2014-03-07 02:54:03 +02:00
Michael Crosby
31c7d13466 Revert "libcontainer: Use MS_PRIVATE instead of MS_SLAVE" 
This reverts commit 757b5775725fb90262cee1fa6068fa9dcbbff59f.

Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@crosbymichael.com> (github: crosbymichael)
 2014-03-06 16:41:03 -08:00
Michael Crosby
abd1f8da60 Revert "libcontainer: Use pivot_root instead of chroot" 
This reverts commit 5b5c884cc8266d0c2a56da0bc2df14cc9d5d85e8.

Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@crosbymichael.com> (github: crosbymichael)
 2014-03-06 16:32:06 -08:00
Michael Crosby
fd8470acba Ensure that native containers die with the parent 
Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@crosbymichael.com> (github: crosbymichael)
 2014-03-06 16:30:56 -08:00
Michael Crosby
c0d5c529bb Remove the ghosts and kill everything 
Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@crosbymichael.com> (github: crosbymichael)
 2014-03-06 15:30:26 -08:00
Guillaume J. Charmes
0ecd2aa284 Use CGO for apparmor profile switch 
Docker-DCO-1.1-Signed-off-by: Guillaume J. Charmes <guillaume.charmes@docker.com> (github: creack)
 2014-03-06 11:10:58 -08:00
Alexander Larsson
0caa2d3992 libcontainer: Don't use UsetCloseOnExec, it is racy 
We can't keep file descriptors without close-on-exec except with
syscall.ForkLock held, as otherwise they could leak by accident into
other children from forks in other threads.

Instead we just use Cmd.ExtraFiles which handles all this for us.

This fixes https://github.com/dotcloud/docker/issues/4493

Docker-DCO-1.1-Signed-off-by: Alexander Larsson <alexl@redhat.com> (github: alexlarsson)
 2014-03-06 14:10:32 +01:00
Michael Crosby
0eb4ea2f79 Some cleanup around logs 
Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@crosbymichael.com> (github: crosbymichael)
 2014-03-05 13:50:49 -08:00
Guillaume J. Charmes
73233223de Add AppArmor support to native driver + change pipe/dup logic 
Docker-DCO-1.1-Signed-off-by: Guillaume J. Charmes <guillaume.charmes@docker.com> (github: creack)
 2014-03-05 13:08:24 -08:00
Alexander Larsson
88aed3bf92 libcontainer: Use MS_PRIVATE instead of MS_SLAVE 
Now that we unmount all the mounts from the global namespace we can
use a private namespace rather than a slave one (as we have no need
for unmounts of inherited global mounts to propagate into the
container).

Docker-DCO-1.1-Signed-off-by: Alexander Larsson <alexl@redhat.com> (github: alexlarsson)
 2014-03-05 09:40:54 +01:00
Michael Crosby
2bddb20b91 Add shm size cap to mount 
Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@crosbymichael.com> (github: crosbymichael)
 2014-03-04 14:18:40 -08:00
Guillaume J. Charmes
9a5dead3c9 Remove /dev tmpfs mountpoint 
Docker-DCO-1.1-Signed-off-by: Guillaume J. Charmes <guillaume.charmes@docker.com> (github: creack)
 2014-03-04 13:21:22 -08:00
Guillaume J. Charmes
91d13e5fa1 remove /run mountpoint 
Docker-DCO-1.1-Signed-off-by: Guillaume J. Charmes <guillaume.charmes@docker.com> (github: creack)
 2014-03-04 12:32:17 -08:00
Guillaume J. Charmes
a8b87a47b6 Remove loopback mount bind 
Docker-DCO-1.1-Signed-off-by: Guillaume J. Charmes <guillaume.charmes@docker.com> (github: creack)
 2014-03-04 12:30:52 -08:00
Alexander Larsson
83de20deb7 libcontainer: Use pivot_root instead of chroot 
Instead of keeping all the old mounts in the container namespace and
just using subtree as root we pivot_root so that the actual root in
the namespace is the root we want, and then we unmount the previous
mounts.

This has multiple advantages:

* The namespace mount tree is smaller (in the kernel)
* If you break out of the chroot you could previously access the host
  filesystem. Now the host filesystem is fully invisible to the namespace.
* We get rid of all unrelated mounts from the parent namespace, which means
  we don't hog these. This is important if we later switch to MS_PRIVATE instead
  of MS_SLAVE as otherwise these mounts would be impossible to unmount from the
  parent namespace.

Docker-DCO-1.1-Signed-off-by: Alexander Larsson <alexl@redhat.com> (github: alexlarsson)
 2014-03-04 12:44:08 +01:00
Michael Crosby
7dc071dca5 Factor out finalize namespace 
Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@crosbymichael.com> (github: crosbymichael)
 2014-03-03 12:15:47 -08:00
Michael Crosby
85696fdb67 Allow child process to live if daemon dies 
Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@crosbymichael.com> (github: crosbymichael)
 2014-02-27 09:33:36 -08:00
Michael Crosby
34301be200 Code review updates 
Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@crosbymichael.com> (github: crosbymichael)
 2014-02-26 19:21:46 -08:00
Michael Crosby
f8262b5748 Ensure that loopback devices are mounted inside the conatiner 
Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@crosbymichael.com> (github: crosbymichael)
 2014-02-26 17:21:09 -08:00
Michael Crosby
4f6cdc6f08 Make network a slice to support multiple types 
Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@crosbymichael.com> (github: crosbymichael)
 2014-02-26 14:20:41 -08:00
Michael Crosby
f85823b53d Fix cross compile for make cross 
Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@crosbymichael.com> (github: crosbymichael)
 2014-02-25 15:19:13 -08:00
Michael Crosby
2acaf7ca82 Move container.json and pid file into a root specific driver dir 
Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@crosbymichael.com> (github: crosbymichael)
 2014-02-25 12:41:31 -08:00
Guillaume J. Charmes
357ca32831 Better capability/namespace management 
Docker-DCO-1.1-Signed-off-by: Guillaume J. Charmes <guillaume.charmes@docker.com> (github: creack)
 2014-02-24 21:52:29 -08:00
Michael Crosby
6daf56799f Refactor and improve libcontainer and driver 
Remove logging for now because it is complicating things
Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@crosbymichael.com> (github: crosbymichael)
 2014-02-24 21:11:52 -08:00
Michael Crosby
0e4d946dc4 Improve logging for nsinit 
Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@crosbymichael.com> (github: crosbymichael)
 2014-02-24 18:38:36 -08:00
Michael Crosby
c8ad8184ec Cgroups allow devices for privileged containers 
Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@crosbymichael.com> (github: crosbymichael)
 2014-02-24 15:47:23 -08:00
Michael Crosby
d50dc3cb7e Honor user passed on container in nsinit 
Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@crosbymichael.com> (github: crosbymichael)
 2014-02-24 13:52:56 -08:00
Michael Crosby
b899d9bc44 Fix tests with dockerinit lookup path 
Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@crosbymichael.com> (github: crosbymichael)
 2014-02-24 13:40:17 -08:00
Michael Crosby
a42c6fafbe Refactor driver to use Exec function from nsini 
Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@crosbymichael.com> (github: crosbymichael)
 2014-02-22 01:21:26 -08:00
Michael Crosby
1271ddcd61 Abstract out diff implementations for importing 
Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@crosbymichael.com> (github: crosbymichael)
 2014-02-22 00:29:21 -08:00
Michael Crosby
118ca3ae64 Add syncpipe for passing context 
Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@crosbymichael.com> (github: crosbymichael)
 2014-02-21 22:58:30 -08:00
Michael Crosby
c71bc03279 Refactor exec method 
Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@crosbymichael.com> (github: crosbymichael)
 2014-02-21 22:37:09 -08:00
Michael Crosby
609c298810 Refactor network creation and initialization into strategies 
Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@crosbymichael.com> (github: crosbymichael)
 2014-02-21 22:26:07 -08:00
Michael Crosby
cda4f27f57 Export functions of nsinit 
Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@crosbymichael.com> (github: crosbymichael)
 2014-02-21 21:14:21 -08:00
Michael Crosby
d2fa488fa2 Initial commit of libcontainer running docker 
Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@crosbymichael.com> (github: crosbymichael)
 2014-02-21 17:23:49 -08:00
Michael Crosby
fa64bff715 Pass tty master to Exec 
Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@crosbymichael.com> (github: crosbymichael)
 2014-02-21 16:40:32 -08:00
Michael Crosby
b3d2325c5f Pass pipes into Exec function 
Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@crosbymichael.com> (github: crosbymichael)
 2014-02-21 16:28:43 -08:00
Michael Crosby
b9bc36a8bb Use lookup path for init 
Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@crosbymichael.com> (github: crosbymichael)
 2014-02-21 16:17:18 -08:00
Michael Crosby
e90b85bdc0 User os.Args[0] as name to reexec 
Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@crosbymichael.com> (github: crosbymichael)
 2014-02-21 15:32:50 -08:00
Michael Crosby
d40fbbb69b Add good logging support to both sides 
Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@crosbymichael.com> (github: crosbymichael)
 2014-02-21 14:56:17 -08:00
Michael Crosby
d67915851d Move tty into container.json 
Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@crosbymichael.com> (github: crosbymichael)
 2014-02-21 14:56:17 -08:00
Michael Crosby
6054bda2b8 Refactor the flag management for main 
Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@crosbymichael.com> (github: crosbymichael)
 2014-02-21 14:56:17 -08:00
Michael Crosby
5d71533d4e Make nsinit a proper go pkg and add the main in another dir 
Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@crosbymichael.com> (github: crosbymichael)
 2014-02-21 14:56:17 -08:00
Guillaume J. Charmes
52fa4de610 Make sure to close the pipe upon ctrl-d 
Docker-DCO-1.1-Signed-off-by: Guillaume J. Charmes <guillaume.charmes@docker.com> (github: creack)
 2014-02-21 14:56:17 -08:00
Guillaume J. Charmes
97738ffed3 Handle non-tty mode 
Docker-DCO-1.1-Signed-off-by: Guillaume J. Charmes <guillaume.charmes@docker.com> (github: creack)
 2014-02-21 14:56:17 -08:00
Guillaume J. Charmes
41696722fa Minor cleanup 
Docker-DCO-1.1-Signed-off-by: Guillaume J. Charmes <guillaume.charmes@docker.com> (github: creack)
 2014-02-21 14:56:17 -08:00
Guillaume J. Charmes
b2e01cbe8c Use a custom pipe instead of stdin for sync net namespace 
Docker-DCO-1.1-Signed-off-by: Guillaume J. Charmes <guillaume.charmes@docker.com> (github: creack)
 2014-02-21 14:56:16 -08:00
Guillaume J. Charmes
3677967f4e Use flag for init 
Docker-DCO-1.1-Signed-off-by: Guillaume J. Charmes <guillaume.charmes@docker.com> (github: creack)
 2014-02-21 14:56:16 -08:00
Michael Crosby
ccc915b7b9 Move rest of cgroups functions into cgroups pkg 
Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@crosbymichael.com> (github: crosbymichael)
 2014-02-21 14:56:16 -08:00
Michael Crosby
c4769ec624 Change IP to address because it includes the subnet 
Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@crosbymichael.com> (github: crosbymichael)
 2014-02-21 14:56:16 -08:00
Michael Crosby
b90aaf6828 Remove clone_vfork 
Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@crosbymichael.com> (github: crosbymichael)
 2014-02-21 14:56:16 -08:00
Michael Crosby
848fd7638b Revert "WIP for setup kmsg" 
This reverts commit 80db9a918337c4ae80ffa9a001da13bd24e848c8.

Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@crosbymichael.com> (github: crosbymichael)
 2014-02-21 14:56:16 -08:00
Alexander Larsson
3de41b34a2 libcontainer: Initial version of cgroups support 
This is a minimal version of raw cgroup support for libcontainer.
It has only enough for what docker needs, and it has no support
for systemd yet.

Docker-DCO-1.1-Signed-off-by: Alexander Larsson <alexl@redhat.com> (github: alexlarsson)
 2014-02-21 14:56:16 -08:00
Michael Crosby
8590435fa0 WIP for setup kmsg 
Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@crosbymichael.com> (github: crosbymichael)
 2014-02-21 14:56:16 -08:00
Michael Crosby
c20c1dfb04 Add comments to many functions 
Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@crosbymichael.com> (github: crosbymichael)
 2014-02-21 14:56:16 -08:00
Michael Crosby
bb59129b2f Refactor to remove cmd from container 
Pass the container's command via args
Remove execin function and just look for an
existing nspid file to join the namespace
Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@crosbymichael.com> (github: crosbymichael)
 2014-02-21 14:56:16 -08:00
Michael Crosby
663518ba66 Add execin function to running a process in a namespace 
Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@crosbymichael.com> (github: crosbymichael)
 2014-02-21 14:56:16 -08:00
Michael Crosby
e3d5adc9e2 Refactor large funcs 
Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@crosbymichael.com> (github: crosbymichael)
 2014-02-21 14:56:16 -08:00
Guillaume J. Charmes
b48bc85967 OSX compilation 
Docker-DCO-1.1-Signed-off-by: Guillaume J. Charmes <guillaume.charmes@dotcloud.com> (github: creack)
 2014-02-21 14:56:16 -08:00
Michael Crosby
84ba029e25 General cleanup of libcontainer 
Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@crosbymichael.com> (github: crosbymichael)
 2014-02-21 14:56:16 -08:00
Michael Crosby
ab6864d0c0 Add dynamic veth name 
Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@crosbymichael.com> (github: crosbymichael)
 2014-02-21 14:56:16 -08:00
Michael Crosby
8430fbf11e Implement init veth creation 
Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@crosbymichael.com> (github: crosbymichael)
 2014-02-21 14:56:15 -08:00
Michael Crosby
e25ebdd06c Simplify namespaces with only nsinit 
Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@crosbymichael.com> (github: crosbymichael)
 2014-02-21 14:56:15 -08:00