Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>

Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>

Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>

They shouldn't be needed anymore.
Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>

Closes #810.
Signed-off-by: Yifeng Tan <tanyifeng1@huawei.com>
Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>

The variable 'descr' is mistakenly covered with 'descr_console'.
Signed-off-by: LiFeng <lifeng68@huawei.com>

add:
src/lxc/cmd/lxc-checkconfig
src/lxc/cmd/lxc-update-config
Signed-off-by: LiFeng <lifeng68@huawei.com>

Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>

In both of these cases if there is actually an error, we won't close the
pipe and the api call will hang. Instead, let's be sure to close the pipe
before waiting, so that it doesn't hang.
Signed-off-by: Tycho Andersen <tycho@tycho.ws>

Dereference after null check
Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>

Argument cannot be negative
Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>

Resource leak
Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>

The only cases where we really need to be privileged with respect
to the host is when we are trying to mknod, and in some cases
to do with a physical network device.  This patch leaves the
detection of the network device cases as a TODO.

This should fix the currently broken case of starting a privileged
container with at least one veth nic, nested inside an unprivileged
container.

Cc: Tycho Andersen <tycho@tycho.ws>
Signed-off-by: Serge Hallyn <shallyn@cisco.com>

Sometimes we want to know whether we are privileged wrt our
namespaces, and sometimes we want to know whether we are priv
wrt init_user_ns.
Signed-off-by: Serge Hallyn <shallyn@cisco.com>

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=9566d6742852c527bf5af38af5cbb878dad75705Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>

Signed-off-by: Marcos Paulo de Souza <marcos.souza.org@gmail.com>

Signed-off-by: Marcos Paulo de Souza <marcos.souza.org@gmail.com>
Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>

Closes #870.
Signed-off-by: Marcos Paulo de Souza <marcos.souza.org@gmail.com>

Issues fixed:
- lxc-centos died about a missing /run directory
- lxc-centos complained about some config files it couldn't modify
- the new container got stuck at startup time for a minute
  (literally), waiting for systemd-remount-fs startup script

Of course it still works for RHEL 6, CentOS 6 and 7 as well. I did not
verify earlier CentOS or RHEL releases.
Signed-off-by: Harald Dunkel <harald.dunkel@aixigo.de>
Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>

Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>

Perform MS_REMOUNT on mounts with MS_RDONLY.
Signed-off-by: LiFeng <lifeng68@huawei.com>
Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>

Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>

Set the same environment variables that were used when starting the container
when attaching to the container.
Signed-off-by: LiFeng <lifeng68@huawei.com>
Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>

Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>

Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>

Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>

Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>

Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>

Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>

Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>

see comment for details.
Signed-off-by: Tycho Andersen <tycho@tycho.ws>

For the ->execute() case, we want to make sure the application dies when
SIGHUP is received. The next patch will ignore SIGHUP in the lxc monitor,
because tasks inside the container send SIGHUP to init to have it reload
its config sometimes, and we don't want to do that with init.lxc, since it
might actually kill the container if it forwards SIGHUP to the child and
the child can't handle it.
Signed-off-by: Tycho Andersen <tycho@tycho.ws>

d76e3e1a inadvertently switched the alarm timeout from sigterm to sigkill.
We really want sigkill here, so let's bring it back.
Signed-off-by: Tycho Andersen <tycho@tycho.ws>

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

Since we stopped linking against AppArmor we can now remove the conditional
compilation.
Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>

This lets users use the tools with "lxc-* -n <container-name>" or
"lxc-* <container-name>".
Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>

The package has pretty much always been iproute2 with iproute being an
alias for it, the alias is now gone so we need to use iproute2.
Signed-off-by: Stéphane Graber <stgraber@ubuntu.com>

In particular, if we are already in a user namespace we are unprivileged,
and doing things like moving the physical nics back to the host netns won't
work. Let's do the same thing LXD does if euid == 0: inspect
/proc/self/uid_map and see what that says.
Signed-off-by: Tycho Andersen <tycho@tycho.ws>

Consider the case where we're running in a user namespace but in the host's
mount ns with the host's filesystem (something like
lxc-usernsexec ... lxc-execute ...), in this case, we'll be euid 0, but we
can't actually write to /run. Let's improve this locking check to make sure
we can actually write to /run before we decide to actually use it as our
locking dir.
Signed-off-by: Tycho Andersen <tycho@tycho.ws>

lxc_cgroup_set_data: h = get_hierarchy(controller);
if h is NULL, now errno is old, it donot set new one.
And then,
cgfsng_setup_limits:

    if (lxc_cgroup_set_data(cg->subsystem, cg->value, d)) {
		if (do_devices && (errno == EACCES ||
			errno == EPERM)) {
			WARN("Error setting %s to %s for %s",
				cg->subsystem, cg->value,
				d->name);
			continue;
		}
		SYSERROR("Error setting %s to %s for
			 %s",
			 cg->subsystem, cg->value,
			 d->name);
		goto out;
	}

SYSERROR will show old errno, make me confused.
Signed-off-by: duguhaotian <duguhaotian@gmail.com>