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// Copyright 2018 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
// semctl Command Definitions. Source: include/uapi/linux/sem.h
const (
GETPID = 11
GETVAL = 12
GETALL = 13
GETNCNT = 14
GETZCNT = 15
SETVAL = 16
SETALL = 17
)
// ipcs ctl cmds. Source: include/uapi/linux/sem.h
const (
SEM_STAT = 18
SEM_INFO = 19
SEM_STAT_ANY = 20
)
// Information about system-wide sempahore limits and parameters.
//
// Source: include/uapi/linux/sem.h
const (
SEMMNI = 32000
SEMMSL = 32000
SEMMNS = SEMMNI * SEMMSL
SEMOPM = 500
SEMVMX = 32767
SEMAEM = SEMVMX
SEMUME = SEMOPM
SEMMNU = SEMMNS
SEMMAP = SEMMNS
SEMUSZ = 20
)
// Semaphore flags.
const (
SEM_UNDO = 0x1000
)
// Sembuf is equivalent to struct sembuf.
//
// +marshal slice:SembufSlice
type Sembuf struct {
SemNum uint16
SemOp int16
SemFlg int16
}
// SemInfo is equivalent to struct seminfo.
//
// Source: include/uapi/linux/sem.h
//
// +marshal
type SemInfo struct {
SemMap uint32
SemMni uint32
SemMns uint32
SemMnu uint32
SemMsl uint32
SemOpm uint32
SemUme uint32
SemUsz uint32
SemVmx uint32
SemAem uint32
}
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