Fix issue #1702, do remount with the MS_REMOUNT flag when mounts with MS_RDONLY

Signed-off-by: Li Feng <lifeng68@huawei.com>

Signed-off-by: Li Feng <lifeng68@huawei.com>

Signed-off-by: Li Feng <lifeng68@huawei.com>

cgfsng: remove the old workdaround code

update doc and test

Signed-off-by: Long Wang <w@laoqinren.net>

Signed-off-by: Long Wang <w@laoqinren.net>

Signed-off-by: Long Wang <w@laoqinren.net>

Signed-off-by: Long Wang <w@laoqinren.net>

Signed-off-by: Long Wang <w@laoqinren.net>

Signed-off-by: Long Wang <w@laoqinren.net>

Signed-off-by: Long Wang <w@laoqinren.net>

Signed-off-by: Long Wang <w@laoqinren.net>

Signed-off-by: Long Wang <w@laoqinren.net>

Signed-off-by: Long Wang <w@laoqinren.net>

Signed-off-by: Long Wang <w@laoqinren.net>

Signed-off-by: Long Wang <w@laoqinren.net>

Signed-off-by: Long Wang <w@laoqinren.net>

cgfsng: only output debug info when we set cgroup data

Update Japanese man pages

add "--defined" option
Signed-off-by: KATOH Yasufumi <karma@jazz.email.ne.jp>

Follow updates of configuration keys:
* Delete lxc.kmsg (commit 26a38fb6)
* lxc.console -> lxc.console.path (commit 3aed4934)
* lxc.mount -> lxc.mount.fstab (commit 47148e96)
* lxc.net.ipv{4,6} -> lxc.net.ipv{4,6}.address (commit 9ff60df2, 2e44ae28)
* lxc.tty -> lxc.tty.max, lxc.devttydir -> lxc.tty.dir (commit fe1c5887)
* lxc.pts -> lxc.pty.max (commit 232763)
Signed-off-by: KATOH Yasufumi <karma@jazz.email.ne.jp>

Only output debug info `cgroup 'xxxx' set to 'yyyy'` when we set
cgroup data.
Signed-off-by: Long Wang <w@laoqinren.net>

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

Fix potential CVE when using spaces in LXC names
Signed-off-by: William Gathoye <william@gathoye.be>

start: dup std{in,out,err} to pty slave

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

In the case the container has a console with a valid slave pty file descriptor
we duplicate std{in,out,err} to the slave file descriptor so console logging
works correctly. When the container does not have a valid slave pty file
descriptor for its console and is started daemonized we should dup to
/dev/null.

Closes #1646.
Signed-off-by: Li Feng <lifeng68@huawei.com>
Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>

delete comments

utils: use access instead of stat

we shoud test whether the file exists and grants
execute permissions.
Signed-off-by: Long Wang <w@laoqinren.net>

Signed-off-by: Long Wang <w@laoqinren.net>

Signed-off-by: Long Wang <w@laoqinren.net>

start: use separate socket on daemonized start

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>

This adds a little more flexibility to the state server. The idea is to have a
command socket function "lxc_cmd_add_state_client()" whose only task is to add
a new state client to the container's in-memory handler. This function returns
either the state of the container if it is already in the requested state or it
will return the newly registered client's fd in one of its arguments to the
caller. We then provide a separate helper function "lxc_cmd_sock_rcv_state()"
which can be passed the returned client fd and listens on the fd for the
requested state.
This is useful when we want to first register a client, then send a signal to
the container and wait for a state. This ensure that the client fd is
registered before the signal can have any effect and can e.g. be used to catch
something like the "STOPPING" state that is very ephemeral.

Additionally we provide a convenience function "lxc_cmd_sock_get_state()" which
combines both tasks and is used in e.g. "lxc_wait()".
Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>