There are now two (permitted) ways to add data to netlink message:

1. put_xxx()
2. call nlmsg_reserve() to get a pointer to newly reserved room within the
   original netlink message, then write or memcpy data to that area.

Both of them guarantee adding requested length data do not overflow the
pre-allocated message buffer by checking against its cap field first.

And there may be no need to access nlmsg_len outside nl module, because both
put_xxx() and nlmsg_reserve() have alread did that for us.
Signed-off-by: Shuai Zhang <zs.broccoli@gmail.com>
Acked-by: Stéphane Graber <stgraber@ubuntu.com>

Disabled building openSUSE containers on openSUSE 13.2 and  openSUSE
Tumbleweed due to faulty behaviour with newer versions of
init_buildsystem.
Signed-off-by: Johannes Kastl <git@ojkastl.de>
Acked-by: Stéphane Graber <stgraber@ubuntu.com>

Create a tty so we get login prompt on console by default
Signed-off-by: Natanael Copa <ncopa@alpinelinux.org>
Acked-by: Stéphane Graber <stgraber@ubuntu.com>

Signed-off-by: Natanael Copa <ncopa@alpinelinux.org>
Acked-by: Stéphane Graber <stgraber@ubuntu.com>

nlmsg_len is the length of message including header.
Signed-off-by: Shuai Zhang <zs.broccoli@gmail.com>
Acked-by: Stéphane Graber <stgraber@ubuntu.com>

Reported-by: David Binderman
Signed-off-by: Stéphane Graber <stgraber@ubuntu.com>

Bind mounts do not honor filesystem mount options. This change will
remount filesystems that are bind mounted if there are changes to
filesystem mount options, specifically if the mount is readonly.
Signed-off-by: Abin Shahab <ashahab@altiscale.com>
Acked-by: Serge E. Hallyn <serge.hallyn@ubuntu.com>

* fix "reg" to "req" in English (fix for commit b8683fef)
* change "opt" to "req" in Japanese
Signed-off-by: KATOH Yasufumi <karma@jazz.email.ne.jp>
Acked-by: Serge E. Hallyn <serge.hallyn@ubuntu.com>

Signed-off-by: Johannes Kastl <git@ojkastl.de>
Acked-by: Serge E. Hallyn <serge.hallyn@ubuntu.com>

Signed-off-by: Johannes Kastl <git@ojkastl.de>
Acked-by: Stéphane Graber <stgraber@ubuntu.com>

Signed-off-by: Johannes Kastl <git@ojkastl.de>
Acked-by: Stéphane Graber <stgraber@ubuntu.com>

Update for commit 0dcbd624Signed-off-by: KATOH Yasufumi <karma@jazz.email.ne.jp>
Acked-by: Stéphane Graber <stgraber@ubuntu.com>

Closes: #355
Signed-off-by: Silvio Fricke <silvio.fricke@gmail.com>
Acked-by: Stéphane Graber <stgraber@ubuntu.com>

Signed-off-by: 謝致邦 <Yeking@Red54.com>
Acked-by: Stéphane Graber <stgraber@ubuntu.com>

Signed-off-by: 謝致邦 <Yeking@Red54.com>
Acked-by: Stéphane Graber <stgraber@ubuntu.com>

This adds OpenWrt common config file.
Signed-off-by: Petar Koretic <petar.koretic@sartura.hr>
CC: Luka Perkov <luka.perkov@sartura.hr>
Acked-by: Stéphane Graber <stgraber@ubuntu.com>

Support creation and use of lxc-cirros by unprivileged users.

If we detect we are an unprivileged user, then insist that we
be in a userns with a id mapping.

If we are in a userns, then don't extract /dev when extracting
the rootfs.

If we are not root, then save the tarball to ~/.cache/lxc/cirros
instead of /var/cache/lxc/cirros.

If we are not roo, then include entries to auto-mount proc and sys,
as well as bind-mount devices.

Cc: Scott Moser <smoser@ubuntu.com>
Signed-off-by: Serge Hallyn <serge.hallyn@ubuntu.com>
Acked-by: Stéphane Graber <stgraber@ubuntu.com>

This is a multipart message in MIME format.

Fixes a small (but consistent) spelling mistake in conf.c
Signed-off-by: Joel Nider <joeln@il.ibm.com>
Acked-by: Stéphane Graber <stgraber@ubuntu.com>

Otherwise both resulting takss will print what they had flushed when they
exit.

This fixes https://bugs.launchpad.net/bugs/1389244Signed-off-by: Serge Hallyn <serge.hallyn@ubuntu.com>
Tested-by: Tycho Andersen <tycho.andersen@canonical.com>
Acked-by: Stéphane Graber <stgraber@ubuntu.com>

Add simple test case for attach() method. Add assert for return value
from create() method which also returns a boolean.
Signed-off-by: Dwight Engen <dwight.engen@oracle.com>
Acked-by: Stéphane Graber <stgraber@ubuntu.com>

Signed-off-by: Stéphane Graber <stgraber@ubuntu.com>
Acked-by: Serge E. Hallyn <serge.hallyn@ubuntu.com>

Do mkdir $rootfs/dev/shm and then mount tmpfs on /dev/shm.
Signed-off-by: TAMUKI Shoichi <tamuki@linet.gr.jp>
Acked-by: Serge E. Hallyn <serge.hallyn@ubuntu.com>

Containers with systemd need a somewhat special setup, which I borrowed
and adapted from lxc-fedora. These changes are required so that Debian 8
(jessie) containers work properly, and are a no-op for previous Debian
versions.
Signed-off-by: Antonio Terceiro <terceiro@debian.org>
Acked-by: Serge E. Hallyn <serge.hallyn@ubuntu.com>

lxc/utils: bugfix freed pointer return value

We allocate a pointer and save this address in a static variable. After
this we freed this pointer and return.

Here a cuttout of a valgrind report:

	[...]
	==11568== Invalid read of size 1
	==11568==    at 0x4C2D524: strlen (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
	==11568==    by 0x5961C9B: puts (in /usr/lib/libc-2.20.so)
	==11568==    by 0x400890: main (lxc_config.c:73)
	==11568==  Address 0x6933e21 is 1 bytes inside a block of size 32 free'd
	==11568==    at 0x4C2B200: free (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
	==11568==    by 0x4E654F2: lxc_global_config_value (utils.c:415)
	==11568==    by 0x4E92177: lxc_get_global_config_item (lxccontainer.c:2287)
	==11568==    by 0x400883: main (lxc_config.c:71)
	[...]
Signed-off-by: Silvio Fricke <silvio.fricke@gmail.com>

lxc/utils: improve choose_init code readability

added container:attach() into the Lua API

Signed-off-by: Silvio Fricke <silvio.fricke@gmail.com>

fixed indent and vars

Fix a typo in the lines inserted in the default sources.list.
Change the default mirror to http.debian.net which is (supposedly) more
accurate and better than cdn.debian.net for a generic configuration.
Use security.debian.org directly for the {release}/updates repository.
Signed-off-by: Gu1 <gu1@aeroxteam.fr>
Acked-by: Stéphane Graber <stgraber@ubuntu.com>

This commit fixes two issues at the time of clone:
* unnecessary directory is created when clone between overlayfs/aufs
* clone failed when the end of rootfs path is not "/rootfs"
Signed-off-by: KATOH Yasufumi <karma@jazz.email.ne.jp>
Acked-by: Serge E. Hallyn <serge.hallyn@ubuntu.com>

"all" is not a supported keyword for cgmanager's get_pid_cgroup.
Pass the first mounted cgroup subsystem instead of passing "all" when
getting the container's cgorup to attach to.

Also, make sure that the target cgroup is in fact in all identical
cgroups before attaching with 'all".  If not, then we must attach to
each cgroup separately, or else we will not be in all the same cgroups
as the target container.
Signed-off-by: Serge Hallyn <serge.hallyn@ubuntu.com>
Acked-by: Stéphane Graber <stgraber@ubuntu.com>

This patch creates workdir as "olwork", and retry mount with workdir
option when mount is failed.
It is used to prepare files before atomically swithing with
destination, and needs to be on the same filesystem as upperdir. It's
OK for it to be empty.
Signed-off-by: KATOH Yasufumi <karma@jazz.email.ne.jp>
Signed-off-by: Serge Hallyn <serge.hallyn@ubuntu.com>

If attach is being done over passed-in fds, then we shouldn't
mess with the caller's signal table to ignore ctrl-c over the
fd.
Signed-off-by: Serge Hallyn <serge.hallyn@ubuntu.com>
Acked-by: Stéphane Graber <stgraber@ubuntu.com>

Signed-off-by: Sergio Jimenez <tripledes@gmail.com>
Acked-by: Stéphane Graber <stgraber@ubuntu.com>

This addresses https://github.com/lxc/lxc/issues/280.
Signed-off-by: Simon Deziel <simon@sdeziel.info>
Acked-by: Stéphane Graber <stgraber@ubuntu.com>

Currently when we clone a container, bdev_copy passes NULL as dst argument
of bdev_init, then sees bdev->dest (as a result) is NULL, and sets
bdev->dest to $lxcpath/$name/rootfs.  so $ops->clone_paths() can
assume that "/rootfs" is at the end of the path.  The overlayfs and
aufs clonepaths do assume that and index to endofstring-6 and append
delta0.  Let's be more robust by actually finding the last / in
the path.

Then, instead of always setting oldbdev->dest to $lxcpath/$name/rootfs,
set it to oldbdev->src.  Else dir_clonepaths fails when mounting src
onto dest bc dest does not exist.  We could also fix that by creating
bdev->dest if needed, but that addes an empty directory to the old
container.

This fixes 'lxc-clone -o x1 -n x2' if x1 has lxc.rootfs = /var/lib/lxc/x1/x
and makes the overlayfs and aufs paths less fragile should something else
change.
Signed-off-by: Serge Hallyn <serge.hallyn@ubuntu.com>
Acked-by: Stéphane Graber <stgraber@ubuntu.com>

It is not system-definable, rather glibc sets that to bin:/usr/bin, which is
simply too restrictive.  So just always set our preferred path.

This was reported at:
https://bugs.launchpad.net/ubuntu/+source/lxc/+bug/1384327Signed-off-by: Serge Hallyn <serge.hallyn@ubuntu.com>
Acked-by: Stéphane Graber <stgraber@ubuntu.com>

Rather than try to free all the not-being-returned items at
each if clause where we assign one to return value, just NULL
the one we are returning so we can safely free all the
values.  This should fix the newly reported coverity memory
leak
Signed-off-by: Serge Hallyn <serge.hallyn@ubuntu.com>
Acked-by: Stéphane Graber <stgraber@ubuntu.com>