128 lines
4.8 KiB
Diff
128 lines
4.8 KiB
Diff
From daa0a0268e9ed03b8e3c39f003266d0b14cae120 Mon Sep 17 00:00:00 2001
|
|
From: Lennart Poettering <lennart@poettering.net>
|
|
Date: Mon, 2 Jan 2023 17:21:16 +0100
|
|
Subject: [PATCH] udevd: implement the full Type=notify-reload protocol
|
|
|
|
We are basically already there, just need to add MONOTONIC_USEC= to the
|
|
RELOADING=1 message, and make sure the message is generated in really
|
|
all cases.
|
|
|
|
(cherry picked from commit f84331539deae28fbeb42d45ad0c8d583b3372a3)
|
|
|
|
Related: RHEL-6090
|
|
---
|
|
src/udev/udevd.c | 47 +++++++++++++++++++---------------
|
|
units/systemd-udevd.service.in | 3 +--
|
|
2 files changed, 28 insertions(+), 22 deletions(-)
|
|
|
|
diff --git a/src/udev/udevd.c b/src/udev/udevd.c
|
|
index ccc3c0eece..6d82a6eff2 100644
|
|
--- a/src/udev/udevd.c
|
|
+++ b/src/udev/udevd.c
|
|
@@ -32,6 +32,7 @@
|
|
#include "cgroup-setup.h"
|
|
#include "cgroup-util.h"
|
|
#include "cpu-set-util.h"
|
|
+#include "daemon-util.h"
|
|
#include "dev-setup.h"
|
|
#include "device-monitor-private.h"
|
|
#include "device-private.h"
|
|
@@ -331,9 +332,7 @@ static void manager_exit(Manager *manager) {
|
|
|
|
manager->exit = true;
|
|
|
|
- sd_notify(false,
|
|
- "STOPPING=1\n"
|
|
- "STATUS=Starting shutdown...");
|
|
+ (void) sd_notify(/* unset= */ false, NOTIFY_STOPPING);
|
|
|
|
/* close sources of new events and discard buffered events */
|
|
manager->ctrl = udev_ctrl_unref(manager->ctrl);
|
|
@@ -351,7 +350,7 @@ static void manager_exit(Manager *manager) {
|
|
static void notify_ready(void) {
|
|
int r;
|
|
|
|
- r = sd_notifyf(false,
|
|
+ r = sd_notifyf(/* unset= */ false,
|
|
"READY=1\n"
|
|
"STATUS=Processing with %u children at max", arg_children_max);
|
|
if (r < 0)
|
|
@@ -376,23 +375,33 @@ static void manager_reload(Manager *manager, bool force) {
|
|
mac_selinux_maybe_reload();
|
|
|
|
/* Nothing changed. It is not necessary to reload. */
|
|
- if (!udev_rules_should_reload(manager->rules) && !udev_builtin_should_reload())
|
|
- return;
|
|
+ if (!udev_rules_should_reload(manager->rules) && !udev_builtin_should_reload()) {
|
|
|
|
- sd_notify(false,
|
|
- "RELOADING=1\n"
|
|
- "STATUS=Flushing configuration...");
|
|
+ if (!force)
|
|
+ return;
|
|
|
|
- manager_kill_workers(manager, false);
|
|
+ /* If we eat this up, then tell our service manager to just continue */
|
|
+ (void) sd_notifyf(/* unset= */ false,
|
|
+ "RELOADING=1\n"
|
|
+ "STATUS=Skipping configuration reloading, nothing changed.\n"
|
|
+ "MONOTONIC_USEC=" USEC_FMT, now(CLOCK_MONOTONIC));
|
|
+ } else {
|
|
+ (void) sd_notifyf(/* unset= */ false,
|
|
+ "RELOADING=1\n"
|
|
+ "STATUS=Flushing configuration...\n"
|
|
+ "MONOTONIC_USEC=" USEC_FMT, now(CLOCK_MONOTONIC));
|
|
|
|
- udev_builtin_exit();
|
|
- udev_builtin_init();
|
|
+ manager_kill_workers(manager, false);
|
|
|
|
- r = udev_rules_load(&rules, arg_resolve_name_timing);
|
|
- if (r < 0)
|
|
- log_warning_errno(r, "Failed to read udev rules, using the previously loaded rules, ignoring: %m");
|
|
- else
|
|
- udev_rules_free_and_replace(manager->rules, rules);
|
|
+ udev_builtin_exit();
|
|
+ udev_builtin_init();
|
|
+
|
|
+ r = udev_rules_load(&rules, arg_resolve_name_timing);
|
|
+ if (r < 0)
|
|
+ log_warning_errno(r, "Failed to read udev rules, using the previously loaded rules, ignoring: %m");
|
|
+ else
|
|
+ udev_rules_free_and_replace(manager->rules, rules);
|
|
+ }
|
|
|
|
notify_ready();
|
|
}
|
|
@@ -1982,9 +1991,7 @@ static int main_loop(Manager *manager) {
|
|
if (r < 0)
|
|
log_error_errno(r, "Event loop failed: %m");
|
|
|
|
- sd_notify(false,
|
|
- "STOPPING=1\n"
|
|
- "STATUS=Shutting down...");
|
|
+ (void) sd_notify(/* unset= */ false, NOTIFY_STOPPING);
|
|
return r;
|
|
}
|
|
|
|
diff --git a/units/systemd-udevd.service.in b/units/systemd-udevd.service.in
|
|
index e9dbe85ef4..dfc2a0e341 100644
|
|
--- a/units/systemd-udevd.service.in
|
|
+++ b/units/systemd-udevd.service.in
|
|
@@ -18,14 +18,13 @@ ConditionPathIsReadWrite=/sys
|
|
[Service]
|
|
CapabilityBoundingSet=~CAP_SYS_TIME CAP_WAKE_ALARM
|
|
Delegate=pids
|
|
-Type=notify
|
|
+Type=notify-reload
|
|
# Note that udev will reset the value internally for its workers
|
|
OOMScoreAdjust=-1000
|
|
Sockets=systemd-udevd-control.socket systemd-udevd-kernel.socket
|
|
Restart=always
|
|
RestartSec=0
|
|
ExecStart={{ROOTLIBEXECDIR}}/systemd-udevd
|
|
-ExecReload=udevadm control --reload --timeout 0
|
|
KillMode=mixed
|
|
TasksMax=infinity
|
|
PrivateMounts=yes
|