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If a file was opened for writing, and then closed immediately without
actually writing any entries, on subsequent opening, it would be
considered "corrupted". This should be totally fine, and even in
read mode, an empty file can become non-empty later on.
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records
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Let's turn resolved into a something truly useful: a fully asynchronous
DNS stub resolver that subscribes to network changes.
(More to come: caching, LLMNR, mDNS/DNS-SD, DNSSEC, IDN, NSS module)
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Suggested by poma.
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It appears there is no good way to decide whether or not broadcasts should be enabled,
there is hardware that must have broadcast, and there are networks that only allow
unicast. So we give up and make this configurable.
By default, unicast is used, but if the kernel were to inform us abotu certain
interfaces requiring broadcast, we could change this to opt-in by default in
those cases.
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On Tue, Jul 15, 2014 at 1:52 PM, Alick Zhao <alick9188@gmail.com> wrote:
>>>
>>> So maybe ID_SOFTWARE_RADIO ?
>>
>> Hmm, SDR is more a term for a generic technology than for a device
>> class. To me it does not really sound like an administrator would know
>> what this is.
>>
>> What exactly is the device or subsystem you want to make accessible to
>> locally logged-in users only?
>
> Initially it is bladeRF, but many more are of interest: USRP, rtl-sdr,
> HackRF, ... [1]
>
> I agree an administrator might not know what SDR is, since it is
> currently still not widely known, and makes sense only for amateurs
> and researchers. But as a SDR fan, I see many new SDR peripherals
> are created recently, and expect to see more. So a generic ID seems
> reasonable to me.
>
> [1] http://en.wikipedia.org/wiki/List_of_software-defined_radios
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Oneshot services's cgroup is removed when the service
exits. An assert is hit otherwise.
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This reverts previous commit and applies a different fix.
manager_clock_watch() callback calls manager_send_request() to kick
off a resync. We can only do that when we're actually connected to
something. It is not useful to setup the callback from manager_new().
Now the callback will be dropped in manager_connect() and requested
in manager_begin().
https://bugs.freedesktop.org/show_bug.cgi?id=80932
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Jul 04 17:46:03 orchid systemd[1]: Starting Network Time Synchronization...
Jul 04 17:46:03 orchid systemd[1]: Started Network Time Synchronization.
Jul 04 17:46:22 orchid systemd-timesyncd[301]: System time changed. Resyncing.
Jul 04 17:46:22 orchid systemd-timesyncd[301]: Assertion 'm->current_server_name'
https://bugs.freedesktop.org/show_bug.cgi?id=80932
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Make link_initialized() idempotent to avoid taking refs on several udev_device
objects.
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It complains about optoffset possibly being uninitialized. It is wrong,
but let's just initialize it.
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It complains about {max,init}_retransmit_time possibly being
uninitialized. It is wrong, but let's just initialize it.
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Split each netdev kind into its own .h/.c.
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We now:
- parse config
- match on environment
- verify and complement config
- create netdev
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Enslave only really makes sense when referring to bridges and bonds, so try to be
a bit more neutral.
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This was accidentally dropped when adding metric support.
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Vendor Class Identifier be used by DHCP clients to identify
their vendor type and configuration. When using this option,
vendors can define their own specific identifier values, such
as to convey a particular hardware or operating system
configuration or other identifying information.
Vendor-specified DHCP options—features that let administrators assign
separate options to clients with similar configuration requirements.
For example, if DHCP-aware clients for example we want to separate
different gateway and option for different set of people
(dev/test/hr/finance) in a org or devices for example web/database
servers or let's say in a embedded device etc and require a different
default gateway or DNS server than the rest of clients.
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Now route metric can be configuted via conf file:
example conf:
[Match]
Name=em1
[Route]
Gateway=192.168.1.12
Metric=10
Test:
ip route output
default via 192.168.1.12 dev em1 metric 10
[tomegun: squash TODO update and reword man page a bit]
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Turns out, making strings shell-proof is harder than expected:
# machinectl set-hostname "foo|poweroff" && . /etc/machine-info
(This could be simplified by quoting *and* escaping all characters,
which is harmless in shell but unnecessary.)
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We already encourage upstreams to keep the default configuration
separate from user customizations for software that is installed in
the system location. Let's allow that separation also for software
that is installed in the home directory.
Some discussion:
http://thread.gmane.org/gmane.comp.sysutils.systemd.devel/19627
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These files are specially labeled on SELinux systems, and we need to
preserve that label.
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event source to work
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A call to sd_event_source_set_io_events() skipps calling into the kernel
if the new event-mask matches the old one. This is safe for
level-triggered sources as the kernel moves them onto the ready-list
automatically if events change. However, edge-triggered sources might not
be on the ready-list even though events are present.
A call to sd_event_source_set_io_events() with EPOLLET set might thus be
used to just move the io-source onto the ready-list so the next poll
will return it again. This is very useful to avoid starvation in
priority-based event queues.
Imagine a read() loop on an edge-triggered fd. If we cannot read data fast
enough to drain the receive queue, we might decide to skip reading for now
and schedule it for later. On edge-triggered io-sources we have to make
sure it's put on the ready-list so the next dispatch-round will return it
again if it's still the highest priority task. We could make sd-event
handle edge-triggered sources directly and allow marking them ready again.
However, it's much simpler to let the kernel do that for now via
EPOLL_CTL_MOD.
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We use "typedef struct Ring Ring" with camel-case for internal objects.
So rename "struct ring" to "Ring".
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This is like MIN but evaluates 3 arguments. We already have MAX3, so add
the equivalent for MIN.
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Let's always stick to glibc's way to determine byte order, and not mix
autoconf-specific checks with gcc checks.
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The check only cares about whether the module is installed, not enabled.
But installation we should know anyway, after all we ship the module
with systemd these days...
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After all, rsyslog and friends nowadays read their data directly from
the journal, hence the forwarding is unnecessary in most cases.
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[zj: remove the check against a fixed list of environments.]
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An administrator might want to block a certain sysusers config file from
being executed, e.g. to block the creation of a certain user.
Only a relatively short description is added in the man page, since
overrides should be relatively rare.
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