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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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/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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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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This adds three kinds of file system locks for container images:
a) a file system lock next to the actual image, in a .lck file in the
same directory the image is located. This lock has the benefit of
usually being located on the same NFS share as the image itself, and
thus allows locking container images across NFS shares.
b) a file system lock in /run, named after st_dev and st_ino of the
root of the image. This lock has the advantage that it is unique even
if the same image is bind mounted to two different places at the same
time, as the ino/dev stays constant for them.
c) a file system lock that is only taken when a new disk image is about
to be created, that ensures that checking whether the name is already
used across the search path, and actually placing the image is not
interrupted by other code taking the name.
a + b are read-write locks. When a container is booted in read-only mode
a read lock is taken, otherwise a write lock.
Lock b is always taken after a, to avoid ABBA problems.
Lock c is mostly relevant when renaming or cloning images.
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This fixes a memory leak introduced by
1ed0c19f81fd13cdf283c6def0168ce122a853a9
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We initialize structs during declartion if possible
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"read-only" concept for raw disk images, too
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Unlike some client code suggests...
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Check string ops hashmap_put() for keys with a different pointer but the same
value.
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This does not make a difference, but the code was confusing.
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/proc/sys/net/ipv4/ip_forward
We need to turn on /proc/sys/net/ipv4/ip_forward before the
per-interface forwarding setting is useful, hence let's propagate the
per-interface setting once to the system-wide setting.
Due to the unclear ownership rules of that flag, and the fact that
turning it on also has effects on other sysctl flags we try to minimize
changes to the flag, and only turn it on once. There's no logic to
turning it off again, but this should be fairly unproblematic as the
per-interface setting defaults to off anyway.
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This introduces am AddressFamilyBoolean type that works more or less
like a booleaan, but can optionally turn on/off things for ipv4 and ipv6
independently. THis also ports the DHCP field over to it.
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This undoes a small part of 13790add4bf648fed816361794d8277a75253410
which was erroneously added, given that zero length datagrams are OK,
and hence zero length reads on a SOCK_DGRAM be no means mean EOF.
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Now that networkd's IP masquerading support means that running
containers with "--network-veth" will provide network access out of the
box for the container, let's add a shortcut "-n" for it, to make it
easily accessible.
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cannot work elsewhere
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database when untarring
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This exposes an IP port on the container as local port using DNAT.
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This adds two new settings to networkd's .network files:
IPForwarding=yes and IPMasquerade=yes. The former controls the
"forwarding" sysctl setting of the interface, thus controlling whether
IP forwarding shall be enabled on the specific interface. The latter
controls whether a firewall rule shall be installed that exposes traffic
coming from the interface as coming from the local host to all other
interfaces.
This also enables both options by default for container network
interfaces, thus making "systemd-nspawn --network-veth" have network
connectivity out of the box.
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rules, using libiptc
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Commit 3bd5c3 added a check for EACCES, but missed the minus sign.
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Not all of the link_config struct was getting freed.
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deb6120920 'man: there's actually no "fail" fstab option, but only
"nofail" removed it from our documentation, which I missed.
fstab(5) only mentions "auto", "noauto", and "nofail". Stick to
those three.
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Just a simple variable rename, and a dropped flag that sd-bus didn't make
use of.
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strempty() will return an empty string in case the input parameter is
a NULL pointer. The correct test to check for an empty string is
isempty(), so use that instead.
This fixes a regression from commit 17a1c59 ("core/mount: filter out
noauto,auto,nofail,fail options").
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This rule is only run on tablet/touchscreen devices, and extracts their size
in millimeters, as it can be found out through their struct input_absinfo.
The first usecase is exporting device size from tablets/touchscreens. This
may be useful to separate policy and application at the time of mapping
these devices to the available outputs in windowing environments that don't
offer that information as readily (eg. Wayland). This way the compositor can
stay deterministic, and the mix-and-match heuristics are performed outside.
Conceivably, size/resolution information can be changed through EVIOCSABS
anywhere else, but we're only interested in values prior to any calibration,
this rule is thus only run on "add", and no tracking of changes is performed.
This should only remain a problem if calibration were automatically applied
by an earlier udev rule (read: don't).
v2: Folded rationale into commit log, made a builtin, set properties
on device nodes themselves
v3: Use inline function instead of macro for mm. size calculation,
use DECIMAL_STR_MAX, other code style issues
v4: Made rule more selective
v5: Minor style issues, renamed to a more generic builtin, refined
rule further.
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cunescape_length_with_prefix() is called with the length as an
argument, so it cannot rely on the buffer being NUL terminated.
Move the length check before accessing the memory.
When an incomplete escape sequence was given at the end of the
buffer, c_l_w_p() would read past the end of the buffer. Fix this
and add a test.
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