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This adds a new "PollLimit" pair of settings to .socket units, very
similar to existing "TriggerLimit" logic. The differences are:
* PollLimit focusses on the polling on the sockets, and pauses that
temporarily if a ratelimit on that is reached. TriggerLimit otoh
focusses on the triggering effect of socket units, and stops
triggering once the ratelimit is hit.
* While the trigger limit being hit is an action that causes the socket
unit to fail the polling limit being reached will just temporarily
disable polling on the socket fd, and it is resumed once the ratelimit
interval is over.
* When a socket unit operates on multiple socket fds (e,g, ListenStream=
on both some ipv6 and an ipv4 address or so). Then the PollLimit will
be specific to each fd, while the trigger limit is specific to the
whole unit.
Implementation-wise this is mostly a wrapper around sd-event's
sd_event_source_set_ratelimit(), which exposes the desired behaviour
directly.
Usecase for all of this: socket services which when overloaded with
connections should just slow down reception of it, but not fail
persistently.
Let's tweak the message if not enough swap is around slightly: systems
might have plenty swap backed by incompatible storage (specifically:
swap files on btrfs), but we (currently) do not support hibernating to
that.
Hence let's say *suitable* swap space and talk about *compatibility* of
backing storage.
Hopefully this will make things a bit clearer to users.
Prompted by: #29189
As pointed out in the review, all this applies to the user services too, so are
not managed by the "init system", but by the more generic "service manager".
Also:
- use oxford comma
- change "employ" to "use" in various places
- change "the init system forwards messages to syslog" to "are forwarded to
syslog". This is done by systemd-journald, so really there is no forwarding,
because systemd-journald just writes them to a file in the common setup,
so let's use the passive form to avoid specifying who does this.
This conceptually reverts e95acdfe1d3a790e18617bb992a712b34f41800d,
but the actual contents of the script are taken from the command invocation
in meson with all the updates that happened in the meantime.
One small change is that I replaced () by {}: this avoids one subprocess spawn.
People were worried about the cost of vcs_tag(), and this microoptimization may
help a bit. I measured the speed on machine, and noop rebuilds are still about
100–120 ms.
The logic is entirely moved to the script. This makes the meson config simpler
and also makes it easier to use it externally.
The script is needed for in-place rpm builds, see README.build-in-place.md [1],
where it is invoked from the spec file to determine the project version.
[1] https://src.fedoraproject.org/rpms/systemd/blob/rawhide/f/README.build-in-place.md
If you start editing a shell script and then open a buffer with a C
file, the shiftwidth set by the previous autocommand for the sh file
type would not be reset to the original (global) 8ch. Let's fix this by
explicitly setting the shiftwidth in the C file type autocommand as
well.
This fixes the PE section documentation in the systemd-stub man page:
for some reason .uname was listed twice, and .sbat was still missing.
Address that.
Also, let's reorder things to to match the "canonical" ordering we also
use for measurement in sd-stub. The order makes sense and there's really
no reason to depart from that here.
Minor other tweaks.
Reverts b6f2e6860220aa89550f690b12246c4e8eb6e908, among other things
Original info:
acpi:KIOX000A:KIOX000A:
dmi:bvnTECLAST:bvrG4K3_A1tPAD3.01:bd08/25/2017:br5.12:efr14.4:svnTECLAST:pnX3Plus:pvrDefaultstring:rvnTECLAST:rnX3Plus:rvrDefaultstring:cvnDefaultstring:ct30:cvrDefaultstring:skuG4K3_A1:
It seems that teclast x3 plus has another sku G4K2. Not owning that sku, I decide not to cover the change on G4K2.
Previously, even if a .network file contains multiple IPv6 null
addresses with different prefix length, only the first setting is applied,
as the remainings are deduped in network_drop_invalid_addresses().
Even though the kernel allows us to change the prefix length of an existing
IPv6 address, we cannot safely change the prefix length of an address
that is originally requested as a null address, as the prefix of the
address may conflict with other addresses if we change it.
We already prohibit to change the prefix length of an existing IPv6
address that is originally requested as a null address. So, we can
safely allow to configure multiple IPv6 addresses from null addresses by
relaxing the dedup logic. The dedup is govern by the hash_ops. This adds
a special handling for IPv6 null addresses.
When exiting PID 1 we most likely don't have stdio/stdout open, so the
final LSan check would not print any actionable information and would
just crash PID 1 leading up to a kernel panic, which is a bit annoying.
Let's instead attempt to open /dev/console, and if we succeed redirect
LSan's report there.
The result is a bit messy, as it's slightly interleaved with the kernel
panic, but it's definitely better than not having the stack trace at
all:
[ OK ] Reached target final.target.
[ OK ] Finished systemd-poweroff.service.
[ OK ] Reached target poweroff.target.
=================================================================
3 1m 43.251782] Kernel panic - not syncing: Attempted to kill init! exitcode=0x00000100
[ 43.252838] CPU: 2 PID: 1 Comm: systemd Not tainted 6.4.12-200.fc38.x86_64 #1
==[1==ERR O R :4 3Le.a2k53562] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.2-1.fc38 04/01/2014
[ 43.254683] Call Trace:
[ 43.254911] <TASK>
[ 43.255107] dump_stack_lvl+0x47/0x60
S[ a 43.n2555i05] panic+t0x192/0x350
izer[ :43.255966 ] do_exit+0x990/0xdb10
etec[ 43.256504] do_group_exit+0x31/0x80
[ 43.256889] __x64_sys_exit_group+0x18/0x20
[ 43.257288] do_syscall_64+0x60/0x90
o_user_mod leaks[ 43.257618] ? syscall_exit_t
+0x2b/0x40
[ 43.258411] ? do_syscall_64+0x6c/0x90
1mDirect le[ 43.258755] ak of 21 byte(s)? exc_page_fault+0x7f/0x180
[ 43.259446] entry_SYSCALL_64_after_hwframe+0x72/0xdc
[ 43.259901] RiIP: 0033:0x7f357nb8f3ad4
1 objec[ 43.260354] Ctode: 48 89 (f7 0f 05 c3 sf3 0f 1e fa b8 3b 00 00 00) 0f 05 c3 0f 1f 4 0 00 f3 0f 1e fa 50 58 b8 e7 00 00 00 48 83 ec 08 48 63 ff 0f 051
[ 43.262581] RSP: 002b:00007ffc25872440 EFLAGS: 00000202 ORIG_RAX: 00000000000000e7
a RBX: 00007f357be9b218 RCX: 00007f357b8f3ad4m:ffd
[ 43.264512] RDX: 0000000000000001 RSI: 00007f357b933b63 RDI: 0000000000000001
[ 43.265355] RBP: 00007f357be9b218 R08: efffffffffffffff R09: 00007ffc258721ef
[ 43.266191] R10: 000000000000003f R11: 0000000000000202 R12: 00000fe6ae9e0000
[ 43.266891] R13: 00007f3574f00000 R14: 0000000000000000 R15: 0000000000000007
[ 43.267517] </TASK>
#0 0x7f357b8814a8 in strdup (/lib64/libasan.so.8+0x814a8) (BuildId: e5f0a0d511a659fbc47bf41072869139cb2db47f)
#1 0x7f3578d43317 in cg_path_decode_unit ../src/basic/cgroup-util.c:1132
#2 0x7f3578d43936 in cg_path_get_unit ../src/basic/cgroup-util.c:1190
#3 0x7f3578d440f6 in cg_pid_get_unit ../src/basic/cgroup-util.c:1234
#4 0x7f35789263d7 in bus_log_caller ../src/shared/bus-util.c:734
#5 0x7f357a9cf10a in method_reload ../src/core/dbus-manager.c:1621
#6 0x7f3578f77497 in method_callbacks_run ../src/libsystemd/sd-bus/bus-objects.c:406
#7 0x7f3578f80dd8 in object_find_and_run ../src/libsystemd/sd-bus/bus-objects.c:1319
#8 0x7f3578f82487 in bus_process_object ../src/libsystemd/sd-bus/bus-objects.c:1439
#9 0x7f3578fe41f1 in process_message ../src/libsystemd/sd-bus/sd-bus.c:3007
#10 0x7f3578fe477b in process_running ../src/libsystemd/sd-bus/sd-bus.c:3049
#11 0x7f3578fe75d1 in bus_process_internal ../src/libsystemd/sd-bus/sd-bus.c:3269
#12 0x7f3578fe776e in sd_bus_process ../src/libsystemd/sd-bus/sd-bus.c:3296
#13 0x7f3578feaedc in io_callback ../src/libsystemd/sd-bus/sd-bus.c:3638
#14 0x7f35791c2f68 in source_dispatch ../src/libsystemd/sd-event/sd-event.c:4187
#15 0x7f35791cc6f9 in sd_event_dispatch ../src/libsystemd/sd-event/sd-event.c:4808
#16 0x7f35791cd830 in sd_event_run ../src/libsystemd/sd-event/sd-event.c:4869
#17 0x7f357abcd572 in manager_loop ../src/core/manager.c:3244
#18 0x41db21 in invoke_main_loop ../src/core/main.c:1960
#19 0x426615 in main ../src/core/main.c:3125
#20 0x7f3577c49b49 in __libc_start_call_main (/lib64/libc.so.6+0x27b49) (BuildId: 245240a31888ad5c11bbc55b18e02d87388f59a9)
#21 0x7f3577c49c0a in __libc_start_main_alias_2 (/lib64/libc.so.6+0x27c0a) (BuildId: 245240a31888ad5c11bbc55b18e02d87388f59a9)
#22 0x408494 in _start (/usr/lib/systemd/systemd+0x408494) (BuildId: fe61e1b0f00b6a36aa34e707a98c15c52f6b960a)
SUMMARY: AddressSanitizer: 21 byte(s) leaked in 1 allocation(s).
[ 43.295912] Kernel Offset: 0x7000000 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffffbfffffff)
[ 43.297036] ---[ end Kernel panic - not syncing: Attempted to kill init! exitcode=0x00000100 ]---
Originally noticed in https://github.com/systemd/systemd/pull/28579.
Michele Perrone and Ralf Anderegg contribute to ALSA dice driver to support
products of Weiss Engineering. Their patch includes support for DAC202 Maya
edition.
* https://lore.kernel.org/alsa-devel/24703333-9250-40bf-e736-a5f3c4862034@weiss.ch/
This commit fulfulls an entry for the model as well as supplemental comment
to DAC2/Minerva.
In principle, arbitrary notifications may be sent via sd_notify. But in
practice, this is not useful at all, since the manager only accepts
notifications from services and ignores anything except a few specific
ones. The others will be logged if debugging is enabled. OTOH, the manager
produces EXIT_STATUS, but nothing in systemd looks at it, which is rather
confusing.
So remove the recommendation to use X_ prefixes, and instead say that other
messages will be ignored. Also, mention that mkosi uses this. Having an example
may be useful to understand what is going on.
Strangely, this is the first reference to mkosi in our man pages. Even more
strangely, debian is the only place which hosts the mkosi man page (among
the sites we have definitions for), so I linked to that version.
When called with no argument, to list all known values, it is likely that it's
used by somebody to look at all the whole list. The output is more than a page,
so let's enable the pager.
When this was originally added in 9a00f57a5ba7ed431e6bac8d8b36518708503b4e,
the lookup function was called sd_path_home. But it was generalized a long time
ago.
The existing signal doesn't say which type of shutdown is going to happen.
With the introduction of soft-reboot, it is useful to have this information
broadcasted, so that clients can choose to do different things based on the
reboot type.
Add a{sv} as the payload so that more metadata can be added later if
needed, without needing to add yet another signal.
Send both old and new signal for backward compatibility, and send the new
one first so that clients can just wait for the first one on both old and
new systems.
