execute: skip lxc-init logging when unprivileged

Unprivileged app containers will not be able to open the passed in
/proc/1/fd/<idx> log path and will thus currently fail completely as soon as
any log level or log file is passed.
Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>
Reported-by: Mrinal Dhillon <mdhillon@juniper.net>

include: add safe getifaddrs() version

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

The old version was crazy. This replaces it with an internal version based on
musl.
Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>

remove last pam_cgfs special-casing

Fix typo

Signed-off-by: Stéphane Graber <stgraber@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>

log: handle strerror_r() versions + autotools: add --{disable,enable}-thread-safety

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

Fail the build if --enable-thread-safety is passed and the environment cannot
guarantee thread-safety.
Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>

Closes #2563.
Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>

autotools: check if compiler is new enough

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

We line up with the Linux kernel and won't support any compiler under 4.6.
Additionally, we also require at least gnu99 so this is due anyway.
Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>

attach: bugfixes

Makefile: don't allow undefined symbols

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>

conf: fix devpts mounting when fully unprivileged

pam_cgfs: build from the same sources as liblxc

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

Closes #2556.
Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>

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

start: Fix net iface remaining issue

When creating container that has multiple net ifaces fails
because of wrong net config, lxc doesn't remove previously created
net ifaces.

Solve this issue with changing return path in lxc_spawn().

Signed-off-by: Jungsub Shin jungsub_shin@tmax.co.kr

cmd: Fix format issues found by clang-format

list: fix indent

Signed-off-by: 2xsec <dh48.jeong@samsung.com>

clang-format finds a few format issues, lets fix these up.

Fix format issues found by clang-format.
Signed-off-by: Tobin C. Harding <me@tobin.cc>

cmd: Lint with cppcheck