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167 lines
6.1 KiB
167 lines
6.1 KiB
7 months ago
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From fef242735b987c1870bcd0460cc0c802e78a3cde Mon Sep 17 00:00:00 2001
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From: Lennart Poettering <lennart@poettering.net>
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Date: Mon, 2 Jan 2023 17:25:46 +0100
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Subject: [PATCH] networkd: implement Type=notify-reload protocol
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(cherry picked from commit 0e07cdb0e77d0322bc866b5e13abbe38e988059d)
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Related: RHEL-6090
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---
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src/network/networkd-manager-bus.c | 13 +-------
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src/network/networkd-manager.c | 48 ++++++++++++++++++++++++++----
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src/network/networkd-manager.h | 2 ++
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src/network/networkd.c | 2 --
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units/systemd-networkd.service.in | 3 +-
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5 files changed, 47 insertions(+), 21 deletions(-)
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diff --git a/src/network/networkd-manager-bus.c b/src/network/networkd-manager-bus.c
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index 2ab3aaadc2..67f951df69 100644
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--- a/src/network/networkd-manager-bus.c
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+++ b/src/network/networkd-manager-bus.c
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@@ -197,7 +197,6 @@ static int bus_method_reconfigure_link(sd_bus_message *message, void *userdata,
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static int bus_method_reload(sd_bus_message *message, void *userdata, sd_bus_error *error) {
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Manager *manager = userdata;
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- Link *link;
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int r;
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r = bus_verify_polkit_async(message, CAP_NET_ADMIN,
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@@ -209,20 +208,10 @@ static int bus_method_reload(sd_bus_message *message, void *userdata, sd_bus_err
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if (r == 0)
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return 1; /* Polkit will call us back */
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- r = netdev_load(manager, true);
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+ r = manager_reload(manager);
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if (r < 0)
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return r;
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- r = network_reload(manager);
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- if (r < 0)
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- return r;
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-
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- HASHMAP_FOREACH(link, manager->links_by_index) {
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- r = link_reconfigure(link, /* force = */ false);
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- if (r < 0)
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- return r;
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- }
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-
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return sd_bus_reply_method_return(message, NULL);
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}
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diff --git a/src/network/networkd-manager.c b/src/network/networkd-manager.c
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index cdfd29bc0e..362ee84b09 100644
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--- a/src/network/networkd-manager.c
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+++ b/src/network/networkd-manager.c
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@@ -483,6 +483,14 @@ static int signal_restart_callback(sd_event_source *s, const struct signalfd_sig
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return sd_event_exit(sd_event_source_get_event(s), 0);
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}
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+static int signal_reload_callback(sd_event_source *s, const struct signalfd_siginfo *si, void *userdata) {
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+ Manager *m = ASSERT_PTR(userdata);
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+
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+ manager_reload(m);
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+
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+ return 0;
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+}
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+
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static int manager_set_keep_configuration(Manager *m) {
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int r;
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@@ -517,12 +525,11 @@ int manager_setup(Manager *m) {
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if (r < 0)
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return r;
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- assert_se(sigprocmask_many(SIG_SETMASK, NULL, SIGINT, SIGTERM, SIGUSR2, -1) >= 0);
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-
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(void) sd_event_set_watchdog(m->event, true);
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- (void) sd_event_add_signal(m->event, NULL, SIGTERM, signal_terminate_callback, m);
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- (void) sd_event_add_signal(m->event, NULL, SIGINT, signal_terminate_callback, m);
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- (void) sd_event_add_signal(m->event, NULL, SIGUSR2, signal_restart_callback, m);
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+ (void) sd_event_add_signal(m->event, NULL, SIGTERM | SD_EVENT_SIGNAL_PROCMASK, signal_terminate_callback, m);
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+ (void) sd_event_add_signal(m->event, NULL, SIGINT | SD_EVENT_SIGNAL_PROCMASK, signal_terminate_callback, m);
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+ (void) sd_event_add_signal(m->event, NULL, SIGUSR2 | SD_EVENT_SIGNAL_PROCMASK, signal_restart_callback, m);
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+ (void) sd_event_add_signal(m->event, NULL, SIGHUP | SD_EVENT_SIGNAL_PROCMASK, signal_reload_callback, m);
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r = sd_event_add_post(m->event, NULL, manager_dirty_handler, m);
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if (r < 0)
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@@ -1078,3 +1085,34 @@ int manager_set_timezone(Manager *m, const char *tz) {
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return 0;
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}
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+
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+int manager_reload(Manager *m) {
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+ Link *link;
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+ int r;
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+
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+ assert(m);
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+
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+ (void) sd_notifyf(/* unset= */ false,
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+ "RELOADING=1\n"
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+ "STATUS=Reloading configuration...\n"
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+ "MONOTONIC_USEC=" USEC_FMT, now(CLOCK_MONOTONIC));
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+
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+ r = netdev_load(m, /* reload= */ true);
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+ if (r < 0)
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+ goto finish;
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+
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+ r = network_reload(m);
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+ if (r < 0)
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+ goto finish;
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+
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+ HASHMAP_FOREACH(link, m->links_by_index) {
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+ r = link_reconfigure(link, /* force = */ false);
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+ if (r < 0)
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+ goto finish;
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+ }
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+
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+ r = 0;
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+finish:
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+ (void) sd_notify(/* unset= */ false, NOTIFY_READY);
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+ return r;
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+}
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diff --git a/src/network/networkd-manager.h b/src/network/networkd-manager.h
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index 40e6092f85..e6183af0e4 100644
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--- a/src/network/networkd-manager.h
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+++ b/src/network/networkd-manager.h
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@@ -115,4 +115,6 @@ int manager_enumerate(Manager *m);
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int manager_set_hostname(Manager *m, const char *hostname);
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int manager_set_timezone(Manager *m, const char *timezone);
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+int manager_reload(Manager *m);
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+
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DEFINE_TRIVIAL_CLEANUP_FUNC(Manager*, manager_free);
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diff --git a/src/network/networkd.c b/src/network/networkd.c
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index d61769d9f3..68760e8ff4 100644
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--- a/src/network/networkd.c
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+++ b/src/network/networkd.c
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@@ -81,8 +81,6 @@ static int run(int argc, char *argv[]) {
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if (r < 0)
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log_warning_errno(r, "Could not create runtime directory 'lldp': %m");
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- assert_se(sigprocmask_many(SIG_BLOCK, NULL, SIGTERM, SIGINT, -1) >= 0);
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-
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r = manager_new(&m, /* test_mode = */ false);
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if (r < 0)
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return log_error_errno(r, "Could not create manager: %m");
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diff --git a/units/systemd-networkd.service.in b/units/systemd-networkd.service.in
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index d15129e7f0..d8b935a358 100644
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--- a/units/systemd-networkd.service.in
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+++ b/units/systemd-networkd.service.in
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@@ -24,7 +24,6 @@ BusName=org.freedesktop.network1
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CapabilityBoundingSet=CAP_NET_ADMIN CAP_NET_BIND_SERVICE CAP_NET_BROADCAST CAP_NET_RAW
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DeviceAllow=char-* rw
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ExecStart=!!{{ROOTLIBEXECDIR}}/systemd-networkd
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-ExecReload=networkctl reload
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FileDescriptorStoreMax=512
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LockPersonality=yes
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MemoryDenyWriteExecute=yes
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@@ -48,7 +47,7 @@ RuntimeDirectoryPreserve=yes
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SystemCallArchitectures=native
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SystemCallErrorNumber=EPERM
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SystemCallFilter=@system-service
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-Type=notify
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+Type=notify-reload
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User=systemd-network
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{{SERVICE_WATCHDOG}}
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