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Also reorder the code a bit to be easier to parse.
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Right now we always pass KDBUS_ITEM_ATTACH_FLAGS_RECV to
KDBUS_CMD_BUS_MAKE, effectively forcing every bus connection to do the
same during KDBUS_CMD_HELLO. This used to be a workaround to make sure all
metadata is always present. However, we refrained from that approach and
intend to make all metadata collection solely rely on /proc access
restrictions. Therefore, there is no need to force the send-flags mask on
newly created buses.
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Sync with upstream.
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We protect most of the API from use accross forks, but we still allow both
sd_event and sd_event_source objects to be unref'ed. This would cause
problems as it would unregister sources from the underlying eventfd, hence
also affecting the original instance in the parent process.
This fixes the issue by not touching the fds on unref when done accross a fork,
but still free the memory.
This fixes a regression introduced by
"udevd: move main-loop to sd-event": 693d371d30fee
where the worker processes were disabling the inotify event source in the
main daemon.
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libudev: enumerate - accept NULL parameters in add_match()
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This was a regression introduced when moving to sd-device.
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Don't try to read it again.
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Don't clobber the sd_device struct, and don't leak memory when memory allocation fails.
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In device_update_properties_bufs(), the strv is built from pointers into the
single nul-terminated buf_nulstr string, to avoid allocating the key=value
strings twice. However, we must not do that while building and
GREEDY_REALLOC0()'ing buf_nulstr, as each time when this actually reallocates
memory the pointers we wrote into buf_strv so far become invalid.
So change the logic to first completely build the new buf_nulstr, and then
iterate over it to pick out the pointers to the individual key=value strings
for properties_strv.
This fixes invalid environment for udev callouts.
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No functional changes.
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This was a regression that broke
$ udevadm trigger -nv --property-match=DEVNAME=/dev/sda1 --attr-match=size=409600
Reported by David Reisner.
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A NULL pointer was inserted as the first element of the strv.
This had the effect of always passing the empty environment to processes
spawned by udev.
Reported by Michał Bartoszkiewicz.
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With the v221 release these APIs should be public, stable APIs, hence
let's install their headers by default now, and add their symbols to the
.sym file.
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asprintf() does not set errno.
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https://bugs.freedesktop.org/show_bug.cgi?id=42940
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Building with address sanitizer enabled on GCC 5.1.x a memory leak
is reported because we never close the bus, fix it by using
cleanup variable attribute.
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GNU memmem() requires a nonnull first parameter. Let's introduce
memmem_safe() that removes this restriction for zero-length parameters,
and make use of it where appropriate.
http://lists.freedesktop.org/archives/systemd-devel/2015-May/031705.html
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Whenever systemd is re-executed, it tries to create a system bus via
kdbus. If the system did not have kdbus loaded during bootup, but the
module is loaded later on manually, this will cause two system buses
running (kdbus and dbus-daemon in parallel).
This patch makes sure we never try to create kdbus buses if it wasn't
explicitly requested on the command-line.
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instance of a process
units are organized in slice trees, not only for the system instance,
but also for user systemd instances, expose this properly.
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As perparation for future incompatible kdbus kernel API changes.
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This patch add support to create vti6 tunnel
test:
vt6.network
[Match]
Name=wlan0
[Network]
Tunnel=ip6vti
vti6.netdev
[NetDev]
Name=ip6vti
Kind=vti6
[Tunnel]
Local=2a00:ffde:4567:edde::4987
Remote=2001:473:fece:cafe::5179
ip link
11: ip6_vti0@NONE: <NOARP> mtu 1500 qdisc noop state DOWN mode DEFAULT
group default
link/tunnel6 :: brd ::
12: ip6vti@wlan0: <POINTOPOINT,NOARP> mtu 1500 qdisc noop state DOWN
mode DEFAULT group default
link/tunnel6 2a00:ffde:4567:edde::4987 peer 2001:473:fece:cafe::5179
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A number of fields do not apply to all processes, including: there a
processes without a controlling tty, without parent process, without
service, user services or session. To distuingish these cases from the
case where we simply don't have the data, always return ENXIO for them,
while returning ENODATA for the case where we really lack the
information.
Also update the credentials dumping code to show this properly. Fields
that are known but do not apply are now shown as "n/a".
Note that this also changes some of the calls in process-util.c and
cgroup-util.c to return ENXIO for these cases.
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If NULL is specified for the bus it is now automatically derived from
the passed in message.
This commit also changes a number of invocations of sd_bus_send() to
make use of this.
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This should simplify the prototype a bit. The bus parameter is redundant
in most cases, and in the few where it matters it can be derived from
the message via sd_bus_message_get_bus().
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This can now benchmark more than just kdbus.
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We introduce two news types of benchmarks in chart-mode:
- 'legacy' connects using the session bus
- 'direct' connects using a peer-to-peer socket
We should probably also introduce a mode for testing the dbus1-kdbus proxy.
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and related calls
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Otherwise it might happen that by the time PID 1 adds our process to the
scope unit the process might already have died, if the process is
short-running (such as an invocation to /bin/true).
https://bugs.freedesktop.org/show_bug.cgi?id=86520
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NULL result only
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If for whatever reason there was nothing to load or loading failed, don't keep trying.
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Only 'real' devices are required to have an uevent file.
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This reverts b67f944. Lazy loading of device properties does not work for devices
that are received over netlink, as these are sealed. Reinstate the unconditional
loading of the device db.
Reported by: Mantas Mikulėnas <grawity@gmail.com>.
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This is useful to print wall messages from logind with the right client
tty. (to be added in a later patch)
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Also, don't consider this an loggable event, so that code that tries to
read creds from a direct connection, doesn't generate logs.
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direct connection
It's never a good idea, let's just not do it, not even on dierct
connections.
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So far we authenticate direct connections primarily at connection time,
but let's also do this for each method individually, by attaching the
creds we need for that right away.
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kdbus has been passing us the ppid file for a while, actually make use
of it.
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device
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Also, when we do permissions checks using creds, verify that we don't do
so based on augmented creds, as extra safety check.
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