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// Copyright 2021 The gVisor Authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package linux
// Default values for POSIX message queues. Source:
// include/linux/ipc_namespace.h
const (
DFLT_QUEUESMAX = 256
MIN_MSGMAX = 1
DFLT_MSG uint = 10
DFLT_MSGMAX = 10
HARD_MSGMAX = 65536
MIN_MSGSIZEMAX = 128
DFLT_MSGSIZE uint = 8192
DFLT_MSGSIZEMAX = 8192
HARD_MSGSIZEMAX = (16 * 1024 * 1024)
)
// Maximum values for a message queue. Source: include/uapi/linux/mqueue.h
const (
MQ_PRIO_MAX = 32768
MQ_BYTES_MAX = 819200
)
// Codes used by mq_notify. Source: include/uapi/linux/mqueue.h
const (
NOTIFY_NONE = 0
NOTIFY_WOKENUP = 1
NOTIFY_REMOVED = 2
NOTIFY_COOKIE_LEN = 32
)
// MqAttr is equivalent to struct mq_attr. Source: include/uapi/linux/mqueue.h
//
// +marshal
type MqAttr struct {
MqFlags int64 // Message queue flags.
MqMaxmsg int64 // Maximum number of messages.
MqMsgsize int64 // Maximum message size.
MqCurmsgs int64 // Number of messages currently queued.
_ [4]int64 // Ignored for input, zeroed for output.
}
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