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Build the sources in order so that files that depend on other
files are build after the files they depend on.

We know that this isn't going to fail. No need to check every time.

If the manager removes the device, the IP config objects must
be cleared. The reason is that NMPolicy registers to the IP config
changed signal and passes these object on to NMDnsManager.

If the INTERNAL_DEVICE_REMOVED signal is emited with IP configuration
object pending, those objects will be leaked.

This partly redoes commit f72816bf,
which was reverted.
Co-Authored-By: Thomas Haller <thaller@redhat.com>

https://bugzilla.gnome.org/show_bug.cgi?id=764483

https://bugzilla.gnome.org/show_bug.cgi?id=764606

Free the error via gs_free_error and create separate instances.

We want to unregister the signals at cleanup time via
g_signal_handlers_disconnect_by_data(). This saves us from
storing the signal handler id or by naming the function
explicitly via g_signal_handlers_disconnect_by_func().

However, the registered user-data @self is a public pointer. That
is ugly, because potentially another component could register a
signal with passing the public @self pointer as user-data.
Although that doesn't currently happen, it is more correct to register
with a private pointer to avoid this case altogether.

Instead of a G_TYPE_INSTANCE_GET_PRIVATE() call every time,
fetching the private data becomes a pointer dereference.

As only one instance of NMPolicy exists, this costs us only
one additional pointer of memory.

No need to track the signal id of the device. We unsubscribe
all devices together, hence we can just use
g_signal_handlers_disconnect_by_data().

https://bugzilla.gnome.org/show_bug.cgi?id=761389
https://bugzilla.gnome.org/show_bug.cgi?id=763236

Software devices created by NM should be kept up when quitting so that
they can be assumed upon restart. But now we consider devices created
by NM (those with the @is_nm_owned flag) not capable of assuming
connections and therefore we tear them down and deconfigure when
quitting.

Change this and ignore @is_nm_owned when deciding if a device can be
re-assumed.

This doesn't unexport the connection on disconnect (as opposed to device
removal).

This reverts commit f72816bf.

First let the device know it's being removed soon so that it has a
chance to clean up the IP configuration early.

If the manager removes the device fist, the policy never learns of
config removal and doesn't unhook it from the DNS manager resulting in a
IPConfig leak and possible wrong DNS configuration in effect.

Also adjust the route manager to skip over devices without IP
configuration when determining the best connection; it is perhaps
just due to being removed.

https://bugzilla.gnome.org/show_bug.cgi?id=764483

Later in NMDevice's rdisc_config_changed(), we already reject
routes with plen==0. Just do it earlier.

We would however not reject bogus routes with a prefix larger then 128.
That would later lead to an error when trying to add such a route to the
kernel.

Don't use memset() and set the fields afterwards. Instead use
designated initializers.

Also, move the temporary variables closer to where they are used.

The option forces the use of TCP for DNS resolutions.

Fixes: f76aa4f7

Use NM_GOBJECT_PROPERTIES_DEFINE() and _notify() function.

When the user neither specifies SOURCE or SOURCE_FROM_GIT,
we first want to detect a tarball in the current directory,
and as second fallback to SOURCE_FROM_GIT=1.

If either SOURCE or SOURCE_FROM_GIT is set, we want to do
that and not detect anything.

The logic was wrong.

After merging https://github.com/systemd/systemd/pull/2898,
use the LLDP defines now from public systemd API.

The NMSettings shouldn't generate a new default wired connection for
devices that are being deactivated.

This is a direct dump from systemd git on 2016-03-31, git commit
1db30aeab10ca716aae877b298289fe1765f14fb.

======

SYSTEMD_DIR=../systemd
COMMIT=1db30aeab10ca716aae877b298289fe1765f14fb

(
  cd "$SYSTEMD_DIR"
  git checkout "$COMMIT"
  git reset --hard
  git clean -fdx
)

git ls-files :/src/systemd/src/ | xargs -d '\n' rm -f

nm_copy_sd() {
    mkdir -p "./src/systemd/$(dirname "$1")"
    cp "$SYSTEMD_DIR/$1" "./src/systemd/$1"
}

nm_copy_sd "src/basic/alloc-util.c"
nm_copy_sd "src/basic/alloc-util.h"
nm_copy_sd "src/basic/async.h"
nm_copy_sd "src/basic/escape.c"
nm_copy_sd "src/basic/escape.h"
nm_copy_sd "src/basic/ether-addr-util.c"
nm_copy_sd "src/basic/ether-addr-util.h"
nm_copy_sd "src/basic/fileio.c"
nm_copy_sd "src/basic/fileio.h"
nm_copy_sd "src/basic/fd-util.c"
nm_copy_sd "src/basic/fd-util.h"
nm_copy_sd "src/basic/fs-util.c"
nm_copy_sd "src/basic/fs-util.h"
nm_copy_sd "src/basic/hash-funcs.c"
nm_copy_sd "src/basic/hash-funcs.h"
nm_copy_sd "src/basic/hashmap.c"
nm_copy_sd "src/basic/hashmap.h"
nm_copy_sd "src/basic/hexdecoct.c"
nm_copy_sd "src/basic/hexdecoct.h"
nm_copy_sd "src/basic/hostname-util.c"
nm_copy_sd "src/basic/hostname-util.h"
nm_copy_sd "src/basic/in-addr-util.c"
nm_copy_sd "src/basic/in-addr-util.h"
nm_copy_sd "src/basic/io-util.c"
nm_copy_sd "src/basic/io-util.h"
nm_copy_sd "src/basic/list.h"
nm_copy_sd "src/basic/log.h"
nm_copy_sd "src/basic/macro.h"
nm_copy_sd "src/basic/mempool.h"
nm_copy_sd "src/basic/mempool.c"
nm_copy_sd "src/basic/parse-util.c"
nm_copy_sd "src/basic/parse-util.h"
nm_copy_sd "src/basic/path-util.c"
nm_copy_sd "src/basic/path-util.h"
nm_copy_sd "src/basic/prioq.h"
nm_copy_sd "src/basic/prioq.c"
nm_copy_sd "src/basic/random-util.c"
nm_copy_sd "src/basic/random-util.h"
nm_copy_sd "src/basic/refcnt.h"
nm_copy_sd "src/basic/set.h"
nm_copy_sd "src/basic/siphash24.c"
nm_copy_sd "src/basic/siphash24.h"
nm_copy_sd "src/basic/socket-util.c"
nm_copy_sd "src/basic/socket-util.h"
nm_copy_sd "src/basic/sparse-endian.h"
nm_copy_sd "src/basic/stdio-util.h"
nm_copy_sd "src/basic/string-table.c"
nm_copy_sd "src/basic/string-table.h"
nm_copy_sd "src/basic/string-util.c"
nm_copy_sd "src/basic/string-util.h"
nm_copy_sd "src/basic/strv.c"
nm_copy_sd "src/basic/strv.h"
nm_copy_sd "src/basic/time-util.c"
nm_copy_sd "src/basic/time-util.h"
nm_copy_sd "src/basic/umask-util.h"
nm_copy_sd "src/basic/unaligned.h"
nm_copy_sd "src/basic/utf8.c"
nm_copy_sd "src/basic/utf8.h"
nm_copy_sd "src/basic/util.c"
nm_copy_sd "src/basic/util.h"
nm_copy_sd "src/libsystemd-network/arp-util.c"
nm_copy_sd "src/libsystemd-network/arp-util.h"
nm_copy_sd "src/libsystemd-network/dhcp6-internal.h"
nm_copy_sd "src/libsystemd-network/dhcp6-lease-internal.h"
nm_copy_sd "src/libsystemd-network/dhcp6-network.c"
nm_copy_sd "src/libsystemd-network/dhcp6-option.c"
nm_copy_sd "src/libsystemd-network/dhcp6-protocol.h"
nm_copy_sd "src/libsystemd-network/dhcp-identifier.c"
nm_copy_sd "src/libsystemd-network/dhcp-identifier.h"
nm_copy_sd "src/libsystemd-network/dhcp-internal.h"
nm_copy_sd "src/libsystemd-network/dhcp-lease-internal.h"
nm_copy_sd "src/libsystemd-network/dhcp-network.c"
nm_copy_sd "src/libsystemd-network/dhcp-option.c"
nm_copy_sd "src/libsystemd-network/dhcp-packet.c"
nm_copy_sd "src/libsystemd-network/dhcp-protocol.h"
nm_copy_sd "src/libsystemd-network/lldp.h"
nm_copy_sd "src/libsystemd-network/lldp-internal.h"
nm_copy_sd "src/libsystemd-network/lldp-neighbor.c"
nm_copy_sd "src/libsystemd-network/lldp-neighbor.h"
nm_copy_sd "src/libsystemd-network/lldp-network.c"
nm_copy_sd "src/libsystemd-network/lldp-network.h"
nm_copy_sd "src/libsystemd-network/network-internal.c"
nm_copy_sd "src/libsystemd-network/network-internal.h"
nm_copy_sd "src/libsystemd-network/sd-dhcp6-client.c"
nm_copy_sd "src/libsystemd-network/sd-dhcp6-lease.c"
nm_copy_sd "src/libsystemd-network/sd-dhcp-client.c"
nm_copy_sd "src/libsystemd-network/sd-dhcp-lease.c"
nm_copy_sd "src/libsystemd-network/sd-ipv4ll.c"
nm_copy_sd "src/libsystemd-network/sd-ipv4acd.c"
nm_copy_sd "src/libsystemd-network/sd-lldp.c"
nm_copy_sd "src/libsystemd/sd-event/sd-event.c"
nm_copy_sd "src/libsystemd/sd-id128/sd-id128.c"
nm_copy_sd "src/shared/dns-domain.c"
nm_copy_sd "src/shared/dns-domain.h"
nm_copy_sd "src/systemd/_sd-common.h"
nm_copy_sd "src/systemd/sd-dhcp6-client.h"
nm_copy_sd "src/systemd/sd-dhcp6-lease.h"
nm_copy_sd "src/systemd/sd-dhcp-client.h"
nm_copy_sd "src/systemd/sd-dhcp-lease.h"
nm_copy_sd "src/systemd/sd-event.h"
nm_copy_sd "src/systemd/sd-ndisc.h"
nm_copy_sd "src/systemd/sd-id128.h"
nm_copy_sd "src/systemd/sd-ipv4acd.h"
nm_copy_sd "src/systemd/sd-ipv4ll.h"
nm_copy_sd "src/systemd/sd-lldp.h"