fix console stdin,stdout,stderr fds

The fds for stdin,stdout,stderr that we were leaving open for /sbin/init
in the container were those from /dev/tty or lxc.console (if given), which
wasn't right. Inside the container it should only have access to the pty
that lxc creates representing the console.

This was noticed because busybox's init was resetting the termio on its
stdin which was effecting the actual users terminal instead of the pty.
This meant it was setting icanon so were were not passing keystrokes
immediately to the pty, and hence command line history/editing wasn't
working.

Fix by dup'ing the console pty to stdin,stdout,stderr just before
exec()ing /sbin/init. Fix fd leak in error handling that I noticed while
going through this code.

Also tested with lxc.console = none, lxc.console = /dev/tty7 and no
lxc.console specified.

Signed-off-by: Dwight Engen <dwight.engen@oracle.com>
Acked-by: Stéphane Graber <stgraber@ubuntu.com>
add missing return false on error path

Signed-off-by: Serge Hallyn <serge.hallyn@ubuntu.com>
cgmanager: tell dbus to do locking

Thanks to S.Çağlar for figuring out that we needed this!

Also fix a memory leak found by coverity.

Signed-off-by: Serge Hallyn <serge.hallyn@ubuntu.com>
wait 15 seconds instead of forever and produce debug logs for further analyze

Signed-off-by: S.Çağlar Onur <caglar@10ur.org>
Acked-by: Serge E. Hallyn <serge.hallyn@ubuntu.com>
Signed-off-by: Serge Hallyn <serge.hallyn@ubuntu.com>
Revert "fix console stdin,stdout,stderr fds"

This reverts commit 1da0ad1e0adff18c6d588772146eb054440db95b.
put shared variables into thread-local storage

This doesn't solve the general design problem of the log.c (eg; some log lines
got lost or scattered into multiple files) but at least prevent multithreaded
code from crashing.

Before this change something like following;

sudo src/tests/lxc-test-concurrent -i 10 -j 20

was crashing nearly all the time due to 3afbcc4600a as we started to
set lxc.loglevel and lxc.logfile with that commit.

Signed-off-by: S.Çağlar Onur <caglar@10ur.org>
Signed-off-by: Serge Hallyn <serge.hallyn@ubuntu.com>
add shared lxc_log_fd into TLS

Signed-off-by: S.Çağlar Onur <caglar@10ur.org>
Signed-off-by: Serge Hallyn <serge.hallyn@ubuntu.com>