systemd/0115-nspawn-rework-how-we-allocate-kill-scopes.patch

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From 37c1da056b63323514d71d2832a01ea916f004cc Mon Sep 17 00:00:00 2001
From: Lennart Poettering <lennart@poettering.net>
Date: Fri, 5 Oct 2018 22:56:40 +0200
Subject: [PATCH] nspawn: rework how we allocate/kill scopes
Fixes: #6347
(cherry picked from commit 1d78fea2d6230e0aafa2603abc8f1f51966ef134)
Resolves: #1697893
---
src/nspawn/nspawn-register.c | 64 +++++++++++++++++++++++++++++++++++-
src/nspawn/nspawn-register.h | 1 +
src/nspawn/nspawn.c | 8 +++--
3 files changed, 70 insertions(+), 3 deletions(-)
diff --git a/src/nspawn/nspawn-register.c b/src/nspawn/nspawn-register.c
index 0d45cce66e..a7cdfc1c7d 100644
--- a/src/nspawn/nspawn-register.c
+++ b/src/nspawn/nspawn-register.c
@@ -274,10 +274,12 @@ int allocate_scope(
description = strjoina("Container ", machine_name);
- r = sd_bus_message_append(m, "(sv)(sv)(sv)(sv)",
+ r = sd_bus_message_append(m, "(sv)(sv)(sv)(sv)(sv)(sv)",
"PIDs", "au", 1, pid,
"Description", "s", description,
"Delegate", "b", 1,
+ "CollectMode", "s", "inactive-or-failed",
+ "AddRef", "b", 1,
"Slice", "s", isempty(slice) ? SPECIAL_MACHINE_SLICE : slice);
if (r < 0)
return bus_log_create_error(r);
@@ -324,3 +326,63 @@ int allocate_scope(
return 0;
}
+
+int terminate_scope(
+ sd_bus *bus,
+ const char *machine_name) {
+
+ _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
+ _cleanup_free_ char *scope = NULL;
+ int r;
+
+ r = unit_name_mangle_with_suffix(machine_name, 0, ".scope", &scope);
+ if (r < 0)
+ return log_error_errno(r, "Failed to mangle scope name: %m");
+
+ r = sd_bus_call_method(
+ bus,
+ "org.freedesktop.systemd1",
+ "/org/freedesktop/systemd1",
+ "org.freedesktop.systemd1.Manager",
+ "AbandonScope",
+ &error,
+ NULL,
+ "s",
+ scope);
+ if (r < 0) {
+ log_debug_errno(r, "Failed to abandon scope '%s', ignoring: %s", scope, bus_error_message(&error, r));
+ sd_bus_error_free(&error);
+ }
+
+ r = sd_bus_call_method(
+ bus,
+ "org.freedesktop.systemd1",
+ "/org/freedesktop/systemd1",
+ "org.freedesktop.systemd1.Manager",
+ "KillUnit",
+ &error,
+ NULL,
+ "ssi",
+ scope,
+ "all",
+ (int32_t) SIGKILL);
+ if (r < 0) {
+ log_debug_errno(r, "Failed to SIGKILL scope '%s', ignoring: %s", scope, bus_error_message(&error, r));
+ sd_bus_error_free(&error);
+ }
+
+ r = sd_bus_call_method(
+ bus,
+ "org.freedesktop.systemd1",
+ "/org/freedesktop/systemd1",
+ "org.freedesktop.systemd1.Manager",
+ "UnrefUnit",
+ &error,
+ NULL,
+ "s",
+ scope);
+ if (r < 0)
+ log_debug_errno(r, "Failed to drop reference to scope '%s', ignoring: %s", scope, bus_error_message(&error, r));
+
+ return 0;
+}
diff --git a/src/nspawn/nspawn-register.h b/src/nspawn/nspawn-register.h
index ddd8b053a3..05f5776f23 100644
--- a/src/nspawn/nspawn-register.h
+++ b/src/nspawn/nspawn-register.h
@@ -11,3 +11,4 @@ int register_machine(sd_bus *bus, const char *machine_name, pid_t pid, const cha
int terminate_machine(sd_bus *bus, const char *machine_name);
int allocate_scope(sd_bus *bus, const char *machine_name, pid_t pid, const char *slice, CustomMount *mounts, unsigned n_mounts, int kill_signal, char **properties);
+int terminate_scope(sd_bus *bus, const char *machine_name);
diff --git a/src/nspawn/nspawn.c b/src/nspawn/nspawn.c
index c4943f6eb7..b40411dcd0 100644
--- a/src/nspawn/nspawn.c
+++ b/src/nspawn/nspawn.c
@@ -4065,8 +4065,12 @@ static int run(int master,
putc('\n', stdout);
/* Kill if it is not dead yet anyway */
- if (arg_register && !arg_keep_unit && bus)
- terminate_machine(bus, arg_machine);
+ if (bus) {
+ if (arg_register)
+ terminate_machine(bus, arg_machine);
+ else if (!arg_keep_unit)
+ terminate_scope(bus, arg_machine);
+ }
/* Normally redundant, but better safe than sorry */
(void) kill(*pid, SIGKILL);