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systemcl: add support for setting BlockIODeviceWeight for unit

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This patch allows user to set up BlockIODeviceWeight for unit
through systemctl. Such as

systemctl set-property sshd.service BlockIODeviceWeight="/dev/sda 100"
This commit is contained in:
Gao feng
2013-09-10 18:31:43 +02:00
committed by Lennart Poettering
parent 6f68ecb450
commit 7239c1707a
1 changed files with 42 additions and 0 deletions
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src/systemctl/systemctl.c
+42
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@@ -3746,6 +3746,48 @@ static int append_assignment(DBusMessageIter *iter, const char *assignment) {
if (!dbus_message_iter_close_container(&sub, &sub2))
return log_oom();
} else if (streq(field, "BlockIODeviceWeight")) {
DBusMessageIter sub2;
if (!dbus_message_iter_open_container(iter, DBUS_TYPE_VARIANT, "a(st)", &sub) ||
!dbus_message_iter_open_container(&sub, DBUS_TYPE_ARRAY, "(st)", &sub2))
return log_oom();
if (!isempty(eq)) {
const char *path, *weight;
DBusMessageIter sub3;
uint64_t u;
char *e;
e = strchr(eq, ' ');
if (e) {
path = strndupa(eq, e - eq);
weight = e+1;
} else {
log_error("Failed to parse %s value %s.", field, eq);
return -EINVAL;
}
if (!path_startswith(path, "/dev")) {
log_error("%s is not a device file in /dev.", path);
return -EINVAL;
}
r = safe_atou64(weight, &u);
if (r < 0) {
log_error("Failed to parse %s value %s.", field, weight);
return -EINVAL;
}
if (!dbus_message_iter_open_container(&sub2, DBUS_TYPE_STRUCT, NULL, &sub3) ||
!dbus_message_iter_append_basic(&sub3, DBUS_TYPE_STRING, &path) ||
!dbus_message_iter_append_basic(&sub3, DBUS_TYPE_UINT64, &u) ||
!dbus_message_iter_close_container(&sub2, &sub3))
return log_oom();
}
if (!dbus_message_iter_close_container(&sub, &sub2))
return log_oom();
} else {
log_error("Unknown assignment %s.", assignment);
return -EINVAL;