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authorLennart Poettering <lennart@poettering.net>2016-04-29 19:14:52 +0200
committerLennart Poettering <lennart@poettering.net>2016-05-02 11:15:30 +0200
commit5659958529d16f082a24d0c5b68699570b3eace3 (patch)
tree087d89d87288487942caf8e4d29c9aedc1f1e8e3 /src/machine/operation.h
parent26ccc1d0875b0e0c4306b03a52aff712c23d46c7 (diff)
machined: run clone operation asynchronously in the background
Cloning an image can be slow, if the image is not on a btrfs subvolume, hence let's make sure we do this asynchronously in a child process, so that machined isn't blocked as long as we process the client request. This adds a new, generic "Operation" object to machined, that is used to track these kind of background processes. This is inspired by the MachineOperation object that already exists to make copy operations asynchronous. A later patch will rework the MachineOperation logic to use the generic Operation instead.
Diffstat (limited to 'src/machine/operation.h')
-rw-r--r--src/machine/operation.h45
1 files changed, 45 insertions, 0 deletions
diff --git a/src/machine/operation.h b/src/machine/operation.h
new file mode 100644
index 0000000000..9d4c3afe45
--- /dev/null
+++ b/src/machine/operation.h
@@ -0,0 +1,45 @@
+#pragma once
+
+/***
+ This file is part of systemd.
+
+ Copyright 2016 Lennart Poettering
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <sys/types.h>
+
+#include "sd-bus.h"
+#include "sd-event.h"
+
+#include "list.h"
+
+typedef struct Operation Operation;
+
+#include "machined.h"
+
+#define OPERATIONS_MAX 64
+
+struct Operation {
+ Manager *manager;
+ pid_t pid;
+ sd_bus_message *message;
+ int errno_fd;
+ sd_event_source *event_source;
+ LIST_FIELDS(Operation, operations);
+};
+
+int operation_new(Manager *m, pid_t child, sd_bus_message *message, int errno_fd);
+Operation *operation_free(Operation *o);