diff options
| -rw-r--r-- | pkg/abi/linux/BUILD | 1 | ||||
| -rw-r--r-- | pkg/abi/linux/mqueue.go | 55 |
2 files changed, 56 insertions, 0 deletions
diff --git a/pkg/abi/linux/BUILD b/pkg/abi/linux/BUILD index 3576396c1..a7b271120 100644 --- a/pkg/abi/linux/BUILD +++ b/pkg/abi/linux/BUILD @@ -41,6 +41,7 @@ go_library( "linux.go", "membarrier.go", "mm.go", + "mqueue.go", "msgqueue.go", "netdevice.go", "netfilter.go", diff --git a/pkg/abi/linux/mqueue.go b/pkg/abi/linux/mqueue.go new file mode 100644 index 000000000..4988a2aa3 --- /dev/null +++ b/pkg/abi/linux/mqueue.go @@ -0,0 +1,55 @@ +// 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 equivelant 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. +} |