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build-sys: Convert libshared into a private shared library
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Make `journalctl --directory=... --boot 0` work
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The loop on bus_match_run should break and return immediately if
bus->match_callbacks_modified is true. Otherwise the loop may access
free'd data.
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fixes https://bugzilla.redhat.com/show_bug.cgi?id=842060
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--boot=0 magically meant "this boot", but when used with --file/--directory it
should simply refer to the last boot found in the specified journal. This way,
--boot and --list-boots are consistent.
Fixes #3603.
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Those are just local variables and ref_boot_offset is especially
obnoxious.
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Before --this-boot was deprecated in a331b5e6d47243, it did not take
any arguments.
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It works mostly fine, and can be quite useful to examine data from another
system.
OTOH, a single boot id doesn't make sense with --merge, so mixing with --merge
is still not allowed.
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“systemctl show” added an extra blank line after the dump of the
EnvironmentFile property of the unit.
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With commit 6f7da49d00 route-only domains do not get put into resolv.conf's
"search" list any more. Add a comment about the tri-state, to clarify its
semantics and why we are passing a bool parameter into an int type. Also add a
test case for it.
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to hide casting of '-1' strings and make code cleaner.
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Fixes:
```
$ systemctl list-unit-files 'hey\*'
0 unit files listed.
$ systemctl list-unit-files | grep hey
hey\x7eho.service static
```
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machinectl: interpret options placed between "shell" verb and machine name
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Let's make sure we catch early when a machine doesn't exist that is attempted
to be started or enabled as system service.
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Fstab generator fixes
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An incorrectly set if/else chain caused aus to apply the access mode of a
symlink to the directory it is located in. Yuck.
Fixes: #3547
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Link as many binaries as possible with it, to save storage space.
Preserve the static libshared and libbasic for use in libraries, nss
modules and udev.
Libraries need to be static in order to avoid polluting the symbol
namespace.
Udev needs to be static so downstream can avoid strict version dependencies
with the systemd package, and this can complicate upgrade scenarios.
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We do the same already for the root device, hence follow the scheme for /usr
too.
(Also add some explanatory comments.)
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Let's follow the same logic for all mounts here: log errors, and exit the
process uncleanly ultimately, but do not skip further mounts if we encounter a
problem with an earlier one.
Fixes: #2344
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We really shouldn't make up errors like "-1", but use proper errno definitions.
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We have to check for OOM here, let's add that. There's really no point in
checking for path_is_absolute() on the result however, as there's no particular
reason why that should be refused. Also, we don't have similar checks for the
other mount devices the generator deals with, hence don't bother with it here
either. Let's remove that check.
(And it shouldn't return made-up errors like "-1" in this case anyway.)
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unset
Let's a comment about this, to avoid questions popping up like in #2344.
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Commit 3a18b60489504056f9b0b1a139439cbfa60a87e1 introduced a regression that
disabled the color mode for container.
This patch fixes this.
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resolved fixes for handling SERVFAIL errors from servers
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In some cases, caching DNS results locally is not desirable, a it makes DNS
cache poisoning attacks a tad easier and also allows users on the system to
determine whether or not a particular domain got visited by another user. Thus
provide a new "Cache" resolved.conf option to disable it.
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resolved: more fixes, among them "systemctl-resolve --status" to see DNS configuration in effect, and a local DNS stub listener on 127.0.0.53
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SERVFAIL
Some upstream DNS servers return SERVFAIL if we ask them for DNSSEC RRs, which
some forwarding DNS servers pass on to us as SERVFAIL (other though as
NOERROR...). This is should not be considered a problem, as long as the domain
in question didn't have DNSSEC enabled. Hence: when making use of auxiliary
transactions accept those that return SERVFAIL.
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This way we don't log complaints about packets without SOA in case we are not
caching it anyway because the rcode is not SUCCESS or NXDOMAIN...
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There might be two reasons why we get a SERVFAIL response from our selected DNS
server: because this DNS server itself is bad, or because the DNS server
actually serving the zone upstream is bad. So far we immediately downgraded our
server feature level when getting SERVFAIL, under the assumption that the first
case is the only possible case. However, this meant we'd downgrade immediately
even if we encountered the second case described above.
With this commit handling of SERVFAIL is reworked. As soon as we get a SERVFAIL
on a transaction we retry the transaction with a lower feature level, without
changing the feature level tracked for the DNS server itself. If that fails
too, we downgrade further, and so on. If during this downgrading the SERVFAIL
goes away we assume that the DNS server we are talking to is bad, but the zone
is fine and propagate the detected feature level to the information we track
about the DNS server. Should the SERVFAIL not go away this way we let the
transaction fail and accept the SERVFAIL.
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root=/dev/nfs is a legacy option for the kernel to handle root on NFS.
Documentation for this kernel command line option
can be found in the kernel source tree:
Documentation/filesystems/nfs/nfsroot.txt
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add new RestrictRealtime= option to services (and other fixes)
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systemctl: Add missing "/" to files created by 'edit --runtime'
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It makes use of the sd_listen_fds() call, and as such should live in
src/shared, as the distinction between src/basic and src/shared is that the
latter may use libsystemd APIs, the former does not.
Note that btrfs-util.[ch] and log.[ch] also include header files from
libsystemd, but they only need definitions, they do not invoke any function
from it. Hence they may stay in src/basic.
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It takes a boolean value. If true, access to SCHED_RR, SCHED_FIFO and
SCHED_DEADLINE is blocked, which my be used to lock up the system.
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Let's politely refuse with EPERM rather than kill the whole thing right-away.
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This was forgotten when MemoryDenyWriteExecute= was added: we should set NNP in
all cases when we set seccomp filters.
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It's a function defined by us, hence we should look for the error in its return
value, not in "errno".
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This is a fix-up for 2a9a6f8ac04a69ca36d645f9305a33645f22a22b which covered
non-transient units, but missed the case for transient units.
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Otherwise starting a machine named `foo-bar-baz` will end up in
machinectl attempting to start the service unit
`systemd-nspawn@foo\x2dbar\x2dbaz` instead of
`systemd-nspawn@foo-bar-baz`.
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Add sd_notify() parameter to change watchdog_usec during runtime.
Application can change watchdog_usec value by
sd_notify like this. Example. sd_notify(0, "WATCHDOG_USEC=20000000").
To reset watchdog_usec as configured value in service file,
restart service.
Notice.
sd_event is not currently supported. If application uses
sd_event_set_watchdog, or sd_watchdog_enabled, do not use
"WATCHDOG_USEC" option through sd_notify.
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Fix console log color
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Also we had to connect PID's stdio to null later since colors_enabled()
assume that stdout is connected to the console.
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When systemd is started by the kernel, the kernel set the TERM
environment variable unconditionnally to "linux" no matter the console
device used. This might be an issue for dumb devices with no colors
support.
This patch uses default_term_for_tty() for getting a more accurate
value. But it makes sure to keep the user preferences (if any) which
might be passed via the kernel command line. For that purpose /proc
should be mounted.
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Previously, we'd stop processing of the argument list immediately when hitting
the "shell" verb. However, we really should continue processing options then,
until we hit the machine name.
Fixes: #3472
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