| Commit message (Collapse) | Author | Age | Files | Lines |
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Add support for systemd-tpm2 based LUKS2 device activation
via libcryptsetup plugin. This make the feature (tpm2 sealed
LUKS2 keyslot passphrase) usable from both systemd utilities
and cryptsetup cli.
The feature is configured via -Dlibcryptsetup-plugins combo
with default value set to 'auto'. It get's enabled automatically
when cryptsetup 2.4.0 or later is installed in build system.
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Reload user daemons and restart user services at the end of the rpm transaction
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This is not called from the systemd.triggers or systemd.macros files. Instead,
it would be called from the scriptlets in systemd rpm package itself, at the
place where we call systemctl daemon-reexec.
See https://github.com/systemd/systemd/pull/20289#issuecomment-885622200 .
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This closes an important gap: so far we would reexecute the system manager and
restart system services that were configured to do so, but we wouldn't do the
same for user managers or user services.
The scheme used for user managers is very similar to the system one, except
that there can be multiple user managers running, so we query the system
manager to get a list of them, and then tell each one to do the equivalent
operations: daemon-reload, disable --now, set-property Markers=+needs-restart,
reload-or-restart --marked.
The total time that can be spend on this is bounded: we execute the commands in
parallel over user managers and units, and additionally set SYSTEMD_BUS_TIMEOUT
to a lower value (15 s by default). User managers should not have too many
units running, and they should be able to do all those operations very
quickly (<< 1s). The final restart operation may take longer, but it's done
asynchronously, so we only wait for the queuing to happen.
The advantage of doing this synchronously is that we can wait for each step to
happen, and for example daemon-reloads can finish before we execute the service
restarts, etc. We can also order various steps wrt. to the phases in the rpm
transaction.
When this was initially proposed, we discussed a more relaxed scheme with bus
property notifications. Such an approach would be more complex because a bunch
of infrastructure would have to be added to system manager to propagate
appropriate notifications to the user managers, and then the user managers
would have to wait for them. Instead, now there is no new code in the managers,
all new functionality is contained in src/rpm/. The ability to call 'systemctl
--user user@' makes this approach very easy. Also, it would be very hard to
order the user manager steps and the rpm transaction steps.
Note: 'systemctl --user disable' is only called for a user managers that are
running. I don't see a nice way around this, and it shouldn't matter too much:
we'll just leave a dangling symlink in the case where the user enabled the
service manually.
A follow-up for https://bugzilla.redhat.com/show_bug.cgi?id=1792468 and
fa97d2fcf64e0558054bee673f734f523373b146.
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Some rpms install a bunch of units… It seems nicer to invoke them all in
parallel. In particular, timeouts in systemctl also run in parallel, so if
there's some communication mishap, we will wait less.
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Instead of embedding the commands to invoke directly in the macros,
let's use a helper script as indirection. This has a couple of advantages:
- the macro language is awkward, we need to suffix most commands by "|| :"
and "\", which is easy to get wrong. In the new scheme, the macro becomes
a single simple command.
- in the script we can use normal syntax highlighting, shellcheck, etc.
- it's also easier to test the invoked commands by invoking the helper
manually.
- most importantly, the logic is contained in the helper, i.e. we can
update systemd rpm and everything uses the new helper. Before, we would
have to rebuild all packages to update the macro definition.
This raises the question whether it makes sense to use the lua scriptlets when
the real work is done in a bash script. I think it's OK: we still have the
efficient lua scripts that do the short scripts, and we use a single shared
implementation in bash to do the more complex stuff.
The meson version is raised to 0.47 because that's needed for install_mode.
We were planning to raise the required version anyway…
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We can make things a bit simpler and more readable by not specifying the path.
Since we didn't specify the full path for all commands (including those invoked
recursively by anythign we invoke), this didn't really privide any security or
robustness benefits. I guess that full paths were used because this style of
rpm packagnig was popular in the past, with macros used for everything
possible, with special macros for common commands like %{__ln} and %{__mkdir}.
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Don't call malloc from freeze which is called in a signal handler
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Even though it's just a fallback path, let's not be sloppy and allocate in
the crash handler.
> The deadlock happens because systemd crash in malloc() then in signal
> handler, it calls malloc() (close_all_fds()-> opendir()-> __alloc_dir())
> again. malloc() is not a signal-safe function, maybe we should re-think
> the logic here.
Fixes #20266.
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Library code should not call freeze(), this is something that should
only be done by "application code", so moving it into shared/ is appropriate.
The fallback to call _exit() is dropped: let's trust that the infinite loop
is infinite.
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Currently it's only used in two places in src/shared/, so the function was
already included just once in compiled code. But it seems appropriate to
move it there anyway, because library code should have no need to fork
agents, so it doesn't belong in basic/.
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It has only one user and we don't need to put it in basic/.
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We need a sorted list of fds to skip over when closing. We would allocate a
copy of the passed array to do the sort. But all callers construct a temporary
array to pass to us, so it is pointless to copy it again.
close_all_fds/safe_fork_full/namespace_fork/fork_agent are changed to pass
a non-const int array. I checked all users, and all callers are fine with
the array being sorted.
The function was returning some number (sometimes 1, sometimes the extent
of the range passed over to close_range(), ???). Anyway, all callers only
check for error, so let's return 0 on success.
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We don't need to modify the image, and the loopback device is already set to read-only.
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glibc master uses getrandom in malloc since https://sourceware.org/git/?p=glibc.git;a=commit;h=fc859c304898a5ec72e0ba5269ed136ed0ea10e1 , getrandom should be in the default set so to avoid all non trivial programs to fallback to a PRNG.
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"action", "action_multiple_sessions" and "action_ignore_inhibit" can't be NULL
in practice so let's simplify a bit the code.
No functional change.
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Propagate the original command line when reexecuting PID1
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When we reexec the manager in a container, we lose configuration settings on
the kernel command line:
$ systemd-nspawn -M rawhide -b systemd.status-unit-format=name systemd.show-status=yes
...
# tr '\0' ' ' </proc/1/cmdline
/usr/lib/systemd/systemd systemd.status_unit_format=combined systemd.show-status=yes
# sudo systemctl daemon-reexec
# tr '\0' ' ' </proc/1/cmdline
/usr/lib/systemd/systemd --system --deserialize 20
This means that after daemon-reexec, the settings that we gain from the
commandline are reset to defaults.
So let's reeexecute with the original arguments copied over, modulo some
filtering.
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Nested job status for systemd+user service managers
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This does two semi-independent but interleaved things: firstly, the manager now
prints the status text (if available) of a service when we have a job running
for that service and it is slow. Because it's hard to fit enough info on the
line, we only do this if the output mode uses unit names. The format of the
line "… job is running for …" is changed to be shorter. This way we can
somewhat reasonably fit two status messages on one line.
Secondly, the manager now sends more information using sd_notify. This mostly
matters for in case of the user manager. In particular, we notify when starting
one of the special units. Without this, when the system manager would display a
line about waiting for the user manager, it would show status like "Ready.",
which is confusing. Now it'll either show something like "Started special unit
shutdown.target", or the line about waiting for a user job.
Also, the timeouts for the user manager are lowered: the user manager usually
(always?) has status disabled, so we would wait for 25 seconds before showing
job progress. Normally we don't expect to have any jobs that take more than a
second. So let's start the progress output fairly quickly, like we would if
status showing was enabled. This obviously makes the output in the system
manager about the user manager more useful. The timeouts are "desynchronized"
by a fraction so if there are multiple jobs running, we'll cycle through
showing all combinations.
Example output:
Stopping user@1000.service...
[ OK ] Stopped dracut-shutdown.service.
[ OK ] Stopped systemd-logind.service.
[ OK ] Stopped systemd-logind.service - User Login Management.
[* ] Job user@1000.service/stop running (2s / 2min): (1 of 2) User job slowstop.service/stop running (1s / 1min 30s)...
[*** ] Job user@1000.service/stop running (3s / 2min): (2 of 2) User job slowstop2.service/stop running (2s / 1min 30s)...
[ ***] Job user@1000.service/stop running (4s / 2min): (1 of 2) User job slowstop.service/stop running (4s / 1min 30s)...
[ *] Job user@1000.service/stop running (5s / 2min): (1 of 2) User job slowstop.service/stop running (5s / 1min 30s)...
[ ***] Job user@1000.service/stop running (6s / 2min): (2 of 2) User job slowstop2.service/stop running (6s / 1min 30s)...
[*** ] Job user@1000.service/stop running (8s / 2min): (1 of 2) User job slowstop.service/stop running (7s / 1min 30s)...
[*** ] Job user@1000.service/stop running (10s / 2min): (2 of 2) User job slowstop2.service/stop running (9s / 1min 30s)...
[ *** ] Job user@1000.service/stop running (11s / 2min): (1 of 2) User job slowstop.service/stop running (10s / 1min 30s)...
[ *] Job user@1000.service/stop running (12s / 2min): (2 of 2) User job slowstop2.service/stop running (12s / 1min 30s)...
[ ***] Job user@1000.service/stop running (13s / 2min): (1 of 2) User job slowstop.service/stop running (13s / 1min 30s)...
[*** ] Job user@1000.service/stop running (15s / 2min): (2 of 2) User job slowstop2.service/stop running (14s / 1min 30s)...
[* ] Job user@1000.service/stop running (15s / 2min): (2 of 2) User job slowstop2.service/stop running (14s / 1min 30s)...
[*** ] Job user@1000.service/stop running (16s / 2min): User job slowstop.service/stop running (16s / 1min 30s)...
[ ***] Job user@1000.service/stop running (18s / 2min): User job slowstop.service/stop running (17s / 1min 30s)...
[ *] Job user@1000.service/stop running (19s / 2min): User job slowstop.service/stop running (18s / 1min 30s)...
[ ***] Job user@1000.service/stop running (20s / 2min): User job slowstop.service/stop running (19s / 1min 30s)...
[* ] Job user@1000.service/stop running (22s / 2min): User job slowstop.service/stop running (22s / 1min 30s)...
[** ] Job user@1000.service/stop running (30s / 2min): User job slowstop.service/stop running (29s / 1min 30s)...
[ ***] Job user@1000.service/stop running (32s / 2min): User job slowstop.service/stop running (31s / 1min 30s)...
[ *] Job user@1000.service/stop running (33s / 2min): User job slowstop.service/stop running (32s / 1min 30s)...
[ ***] Job user@1000.service/stop running (34s / 2min): User job slowstop.service/stop running (33s / 1min 30s)...
[** ] Job user@1000.service/stop running (37s / 2min): User job slowstop.service/stop running (36s / 1min 30s)...
[ *** ] Job user@1000.service/stop running (41s / 2min): User job slowstop.service/stop running (41s / 1min 30s)...
[ OK ] Stopped user@1000.service - User Manager for UID 1000.
Stopping user-runtime-dir@1000.service - User Runtime Directory /run/user/1000...
[ OK ] Unmounted run-user-1000.mount - /run/user/1000.
[ OK ] Stopped user-runtime-dir@1000.service - User Runtime Directory /run/user/1000.
If the output width is lower than approximately 100 columns, the output stops
being very useful. No idea what to do about that.
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We would send READY=1,STATUS="Startup finished in …" once after finishing
boot. This changes the message to just "Ready.". The time used to reach
readiness is not part of the ongoing status — it's just a bit of debug
information that it useful in some scenarious, but completely uninteresting
most of the time. Also, when we start sending status about other things in
subsequent patches, we can't really go back to showing "Startup finished in …"
later on. So let's just show "Ready." whenever we're in the steady state.
In manager_check_finished(), more steps are skipped if MANAGER_IS_FINISHED().
Those steps are idempotent, but no need to waste cycles trying to do them
more than once.
We'll now also check whether to send the status message whenever the job queue
runs empty. If we already sent the exact same message already, we'll not send
again.
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This is the initiatation of the machine shutdown/reboot/etc, so it's
useful to log about this. We log about the steps that we take, but
so far we didn't really log why we started the sequence (except at
debug level).
The function is renamed, because we also use it for dbus.service,
not just targets.
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The man page says asprintf() pointer is "undefined" on error, but the
only meaningful interpretation is that it's either NULL or points to
something that should be freed with free().
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The file is super long, so let's split this out one subject to a new file.
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When two fields were added to the vtable.x.start struct, no initializers
for these were added to SD_BUS_VTABLE_END which also (ab)used that
struct (albeit sneakily by using non-designated initialization).
While C tolerates this, C++ prohibits these missing initializers, and
both g++ and clang++ will complain when using -Wextra.
This patch gives SD_BUS_VTABLE_END its own case in the union and
clarifies its initialization.
I tested the behaviour of g++ 10.2 and clang 11 in various cases. Both will warn
(-Wmissing-field-initializers, implied by -Wextra) if you provide initializers for some
but not all fields of a struct. Declaring x.end as empty struct or using an empty initializer
{} to initialize the union or one of its members is valid C++ but not C, although both gcc
and clang accept it without warning (even at -Wall -Wextra -std=c90/c++11) unless you
use -pedantic (which requires -std=c99/c++2a to support designated initializers).
Interestingly, .x = { .start = { 0, 0, NULL } } is the only initializer I found for the union
(among candidates for SD_BUS_VTABLE_END) where gcc doesn't zero-fill it entirely
when allocated on stack, it looked like it did in all other cases (I only examined this on
32-bit arm). clang always seems to initialize all bytes of the union.
[zjs: test case:
$ cat vtable-test.cc
#include "sd-bus.h"
const sd_bus_vtable vtable[] = {
SD_BUS_VTABLE_END
};
$ g++ -I src/systemd/ -Wall -Wmissing-field-initializers -c vtable-test.cc
vtable-test.cc:5:1: warning: missing initializer for member ‘sd_bus_vtable::<unnamed union>::<unnamed struct>::features’ [-Wmissing-field-initializers]
5 | };
| ^
vtable-test.cc:5:1: warning: missing initializer for member ‘sd_bus_vtable::<unnamed union>::<unnamed struct>::vtable_format_reference’ [-Wmissing-field-initializers]
$ clang++ -I src/systemd/ -Wmissing-field-initializers -c vtable-test.cc
vtable-test.cc:4:4: warning: missing field 'features' initializer [-Wmissing-field-initializers]
SD_BUS_VTABLE_END
^
src/systemd/sd-bus-vtable.h:188:28: note: expanded from macro 'SD_BUS_VTABLE_END'
.x = { { 0 } }, \
^
1 warning generated.
Both warnings are gone with the patch.]
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gpt: support LoongArch 64-bit
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basic/unit-name: do not use strdupa() on a path
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We already checked for "too long" right above…
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The path may have unbounded length, for example through a fuse mount.
CVE-2021-33910: attacked controlled alloca() leads to crash in systemd and
ultimately a kernel panic. Systemd parses the content of /proc/self/mountinfo
and each mountpoint is passed to mount_setup_unit(), which calls
unit_name_path_escape() underneath. A local attacker who is able to mount a
filesystem with a very long path can crash systemd and the whole system.
https://bugzilla.redhat.com/show_bug.cgi?id=1970887
The resulting string length is bounded by UNIT_NAME_MAX, which is 256. But we
can't easily check the length after simplification before doing the
simplification, which in turns uses a copy of the string we can write to.
So we can't reject paths that are too long before doing the duplication.
Hence the most obvious solution is to switch back to strdup(), as before
7410616cd9dbbec97cf98d75324da5cda2b2f7a2.
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Add test for format_lifetime() and fix prefix
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We would copy "forever" into the buffer. This is a fairly common case, so let's
do a microoptimization and return a static string. (All callers use the return
pointer, so this works just as well.)
The prefix "for " was not displayed, because the pointer to the part of the
buffer after "for " was returned. (Maybe it's just me, but I find strpcpy()
and associated functions really hard to use… I always have to look up what the
do exactly and what the return value is.)
A simple test is added.
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clang's static analyzer reports:
Value stored to 'l' is never read
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When assigning the same address provided by a dynamic addressing
protocol, the new lifetime is stored on Request::Address, but not
Address object in Link object, which can be obtained by address_get().
So, we need to configure address with Address object in Request.
Fixes #20245.
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Useful for systems that don't use a version of less with hyperlink
support.
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Follow-ups for #20109.
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Fixes a bug introduced by 5291f26d4a6450d1fbf3656640ef20c5e78aa6a5.
Fixes #20227.
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UseGateway=no or UseRoutes=no
This makes the default gateway is read from classless static routes or
router option even if UseGateway=no or UseRoutes=no, and will be used
when configuring semi-static routes such that specified with Gateway=_dhcp4.
This also changes the behavior of RoutesToDNS= or RoutesToNTP=.
Previously, the DNS or NTP servers are not in the same network, then the
routes to the servers were not configured when UseGateway=no or
UseRoutes=no. With this commit, the default gateway in classless static
routes or router option will used to connecting the servers even if
UseGateway=no or UseRoutes=no.
Fixes #20208.
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Follow-up for 89fa9a6b7b2505aa2ce18febf1e28e79510dfec2.
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Add macros that define scratch buffer internally for timestamp/timespan formatting
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