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authorGao feng <gaofeng@cn.fujitsu.com>2013-08-27 13:36:53 +0800
committerLennart Poettering <lennart@poettering.net>2013-09-10 18:24:34 +0200
commit6f68ecb450970cafea6d1893f63c0b6385518822 (patch)
tree94316dd80b95ae2d55e900d9416ba0855937fca5 /src
parent06eb4e3bf87584ea526a90643d49037cf6ffd7ff (diff)
cgroup: setup BlockIODeviceWeight in bus_cgroup_set_property
This patch adds the support for setting up BlockIODeviceWeight in bus_cgroup_set_property. most of the codes are copied from the case that sets up DeviceAllow.
Diffstat (limited to 'src')
-rw-r--r--src/core/dbus-cgroup.c86
1 files changed, 86 insertions, 0 deletions
diff --git a/src/core/dbus-cgroup.c b/src/core/dbus-cgroup.c
index 3409e4a11b..1f2a396a6d 100644
--- a/src/core/dbus-cgroup.c
+++ b/src/core/dbus-cgroup.c
@@ -317,6 +317,92 @@ int bus_cgroup_set_property(
return 1;
+ } else if (streq(name, "BlockIODeviceWeight")) {
+ DBusMessageIter sub;
+ unsigned n = 0;
+
+ if (dbus_message_iter_get_arg_type(i) != DBUS_TYPE_ARRAY ||
+ dbus_message_iter_get_element_type(i) != DBUS_TYPE_STRUCT)
+ return -EINVAL;
+
+ dbus_message_iter_recurse(i, &sub);
+ while (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRUCT) {
+ DBusMessageIter sub2;
+ const char *path;
+ uint64_t u64;
+ unsigned long ul;
+ CGroupBlockIODeviceWeight *a;
+
+ dbus_message_iter_recurse(&sub, &sub2);
+
+ if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &path, true) < 0 ||
+ bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_UINT64, &u64, false) < 0)
+ return -EINVAL;
+
+ ul = (unsigned long) u64;
+ if (ul < 10 || ul > 1000)
+ return -EINVAL;
+
+ if (mode != UNIT_CHECK) {
+ CGroupBlockIODeviceWeight *b;
+ bool exist = false;
+
+ LIST_FOREACH(device_weights, b, c->blockio_device_weights) {
+ if (path_equal(b->path, path)) {
+ a = b;
+ exist = true;
+ break;
+ }
+ }
+
+ if (!exist) {
+ a = new0(CGroupBlockIODeviceWeight, 1);
+ if (!a)
+ return -ENOMEM;
+
+ a->path = strdup(path);
+ if (!a->path) {
+ free(a);
+ return -ENOMEM;
+ }
+ }
+
+ a->weight = ul;
+
+ if (!exist)
+ LIST_PREPEND(CGroupBlockIODeviceWeight, device_weights,
+ c->blockio_device_weights, a);
+ }
+
+ n++;
+ dbus_message_iter_next(&sub);
+ }
+
+ if (mode != UNIT_CHECK) {
+ _cleanup_free_ char *buf = NULL;
+ _cleanup_fclose_ FILE *f = NULL;
+ CGroupBlockIODeviceWeight *a;
+ size_t size = 0;
+
+ if (n == 0) {
+ while (c->blockio_device_weights)
+ cgroup_context_free_blockio_device_weight(c, c->blockio_device_weights);
+ }
+
+ f = open_memstream(&buf, &size);
+ if (!f)
+ return -ENOMEM;
+
+ fputs("BlockIODeviceWeight=\n", f);
+ LIST_FOREACH(device_weights, a, c->blockio_device_weights)
+ fprintf(f, "BlockIODeviceWeight=%s %lu\n", a->path, a->weight);
+
+ fflush(f);
+ unit_write_drop_in_private(u, mode, name, buf);
+ }
+
+ return 1;
+
} else if (streq(name, "MemoryAccounting")) {
if (dbus_message_iter_get_arg_type(i) != DBUS_TYPE_BOOLEAN)