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This reverts commit 68e68ca8106e7cd874682ae425843b48579c6539. We *need*
root access to create cgroups. The only exception is if it is run from
within a cgroup with "Delegate=yes". However, this is not always true and
we really shouldn't rely on this.
If your terminal runs from within a systemd --user instance, you're fine.
Everyone else is not (like running from ssh, VTs, and so on..).
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If we set SD_BUS_CREDS_AUGMENT, we *need* the PID from the kernel so we
can lookup further information from /proc. However, we *must* set
SD_BUS_CREDS_PIDS in "mask", otherwise, our creds-collector will never
actually copy the pid into "sd_bus_creds". Fix this, so
SD_BUS_CREDS_AUGMENT works even if SD_BUS_CREDS_PID is not specified by
the caller.
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Fix comment typo and clarify that this is not about privileges but can
have rather arbitrary reasons.
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Whenever a process performs an action on an object, the kernel uses the
EUID of the process to do permission checks and to apply on any newly
created objects. The UID of a process is only used if someone *ELSE* acts
on the process. That is, the UID of a process defines who owns the
process, the EUID defines what privileges are used by this process when
performing an action.
Process limits, on the other hand, are always applied to the real UID, not
the effective UID. This is, because a process has a user object linked,
which always corresponds to its UID. A process never has a user object
linked for its EUID. Thus, accounting (and limits) is always done on the
real UID.
This commit fixes all sd-bus users to use the EUID when performing
privilege checks and alike. Furthermore, it fixes unix-creds to be parsed
as EUID, not UID (as the kernel always takes the EUID on UDS). Anyone
using UID (eg., to do user-accounting) has to fall back to the EUID as UDS
does not transmit the UID.
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Make sure we tell the kernel to fake all UIDs/GIDs. Otherwise, the remote
side has no chance of querying our effective UID (which is usually what
they're interested in).
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We need to implicitly allow HELLO from users with the same uid as the bus.
Fix the bus-uid tracking to use the original uid, not the uid after
privilege-dropping.
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If the caller does not run in a session/seat or has no tracked user, hide
the /org/freedesktop/login1/.../self links in introspection data.
Otherwise, "busctl tree org.freedesktop.login1" tries to query those nodes
even though it cant.
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If we test the policy against multiple destination names, we really should
not print warnings if one of the names results in DENY. Instead, pass the
whole array of names to the policy and let it deal with it.
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Make sure to reload our xml policy configuration if requested via the bus.
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Fix whitespace indentation.
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We cannot use "User=" in unit-files if we want to retain privileges. So
make bus-proxy.c explicitly drop privileges. However, only do that if
we're root, as there is no need to drop it on the user-bus.
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This implements a shared policy cache with read-write locks. We no longer
parse the XML policy in each thread.
This will allow us to easily implement ReloadConfig().
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Make sure stdio-bridge can be found in $PATH. Otherwise, "xyzctl -H"
fails.
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Some time ago 95-keymap.rules was replaced by
60-keyboard.hwdb. Original comments for MSI laptops (that were in
95-keymap.rules) were removed, but I think they are important for
understanding what's going on.
https://bugs.freedesktop.org/show_bug.cgi?id=88412
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Set thread-names to "p$PIDu$UID" and suffix with '*' if truncated. This
helps debugging bus-proxy issues if we want to figure out which
connections are currently open.
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Instead of using Accept=true and running one proxy for each connection, we
now run one proxy-daemon with a thread per connection. This will enable us
to share resources like policies in the future.
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When we call 'systemd-random-seed load' with a read-only /var/lib/systemd,
the cleanup code (which rewrites the random-seed file) will fail and exit.
Arguably, if the filesystem is read-only and the random-seed file exists
then this will be possibly be quite bad for entroy on subsequent reboots
but it should still not make the unit fail.
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Now that we want to make bus-proxy multi-threaded, we have to bring back
the systemd-stdio-bridge for our TCP use-cases.
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Move all the proxy code into a "struct Proxy" object that can be used
from multiple binaries.
We now dropped SMACK as we have to refactor it to work properly. We can
introduce it later on.
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Move local and destination bus creation into a helper function. This
further reduces the line count of main().
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With this change the import tool will now unpack qcow2 images into
normal raw disk images, suitable for usage with nspawn.
This allows has the benefit of also allowing importing Ubuntu Cloud
images for usage with nspawn.
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That way we can download fedora cloud raw images as-is and decompress
them on-the-fly.
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This device has 18 stops per rotation == 20 degree angle. Advertised as
"Micro-precise scrolling"
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The Zyxel switch sends port subtype as Locally assigned (7).
Add LLDP_PORT_SUBTYPE_LOCALLY_ASSIGNED as supported type
reported by Mantas Mikulėnas <grawity@gmail.com>
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There is no reason to keep both separated. We want to avoid API specific
tools and instead keep generic terms like 'input'.
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Make sure we properly validate the return value of
udev_device_get_sysattr_value(). It might be NULL for several reasons.
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Move synthesize_name_acquired() to synthesize.c.
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Move synthesize_*() into synthesize.c and bus_proxy_process_driver() into
driver.c for better code separation.
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Most mice have a wheel click angle of 15 degrees, i.e. 24 clicks per full
wheel rotation. Some mice, like the Logitech M325 have a larger angle. To
allow userspace to make use of that knowledge, add a property to the hwdb.
This allows for better predictive scrolling. e.g. a mouse that has a smaller
click angle will scroll faster, with this value you can accommodate this
where needed. Likewise, using "half turn of the wheel" or "full turn of the
wheel" as a UI element becomes possible.
This addition is mainly driven by libinput 0.8, having the angle enables
libinput to provide an API that distinguishes between a physical distance
(like touchpad scrolling does) and discrete steps (wheel clicks).
Callers can choose what they prefer based on the device.
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/var/lib/container to /var/lib/machines
Given that this is also the place to store raw disk images which are
very much bootable with qemu/kvm it sounds like a misnomer to call the
directory "container". Hence, let's change this sooner rather than
later, and use the generic name, in particular since we otherwise try to
use the generic "machine" preferably over the more specific "container"
or "vm".
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After all, nspawn can now dissect MBR partition levels, too, hence
".gpt" appears a misnomer. Moreover, the the .raw suffix for these files
is already pretty popular (the Fedora disk images use it for example),
hence sounds like an OK scheme to adopt.
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json-see => json-sse
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We can properly run the tests without being root
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Only 5 tests cannot be executed if we are not root, so just skip them
but not the whole set.
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Sometimes udev or some other background daemon might keep the loopback
devices busy while we already want to detach them. Downgrade the warning
about it.
Given that we use autodetach downgrading these messages should be with
little risk.
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With this change nspawn's -i switch now can now make sense of MBR disk
images too - however only if there's only a single, bootable partition
of type 0x83 on the image. For all other cases we cannot really make
sense from the partition table alone.
The big benefit of this change is that upstream Fedora Cloud Images can
now be booted unmodified with systemd-nspawn:
# wget http://download.fedoraproject.org/pub/fedora/linux/releases/21/Cloud/Images/x86_64/Fedora-Cloud-Base-20141203-21.x86_64.raw.xz
# unxz Fedora-Cloud-Base-20141203-21.x86_64.raw.xz
# systemd-nspawn -i Fedora-Cloud-Base-20141203-21.x86_64.raw -b
Next stop: teach the import logic to automatically download these
images, uncompress and verify them.
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This is useful for nspawn managers that want to learn when nspawn is
finished with initialiuzation, as well what the PID of the init system
in the container is.
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The lifetime of compound literals is bound to the local scope, we hence
cannot refernce them outside of it.
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