shaba/systemd
1
0
Fork 0
mirror of https://github.com/systemd/systemd.git synced 2024-12-23 21:35:11 +03:00
Code

cgroup: setup BlockIODeviceWeight in bus_cgroup_set_property

Browse Source 
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.
This commit is contained in:
Gao feng 2013-08-27 13:36:53 +08:00 committed by Lennart Poettering
parent 06eb4e3bf8
commit 6f68ecb450
1 changed files with 86 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

86
src/core/dbus-cgroup.c
View File

@ -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)