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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
// Resources for getrlimit(2)/setrlimit(2)/prlimit(2).
const (
RLIMIT_CPU = 0
RLIMIT_FSIZE = 1
RLIMIT_DATA = 2
RLIMIT_STACK = 3
RLIMIT_CORE = 4
RLIMIT_RSS = 5
RLIMIT_NPROC = 6
RLIMIT_NOFILE = 7
RLIMIT_MEMLOCK = 8
RLIMIT_AS = 9
RLIMIT_LOCKS = 10
RLIMIT_SIGPENDING = 11
RLIMIT_MSGQUEUE = 12
RLIMIT_NICE = 13
RLIMIT_RTPRIO = 14
RLIMIT_RTTIME = 15
)
// RLimit corresponds to Linux's struct rlimit.
type RLimit struct {
// Cur specifies the soft limit.
Cur uint64
// Max specifies the hard limit.
Max uint64
}
const (
// RLimInfinity is RLIM_INFINITY on Linux.
RLimInfinity = ^uint64(0)
// DefaultStackSoftLimit is called _STK_LIM in Linux.
DefaultStackSoftLimit = 8 * 1024 * 1024
// DefaultNprocLimit is defined in kernel/fork.c:set_max_threads, and
// called MAX_THREADS / 2 in Linux.
DefaultNprocLimit = FUTEX_TID_MASK / 2
// DefaultNofileSoftLimit is called INR_OPEN_CUR in Linux.
DefaultNofileSoftLimit = 1024
// DefaultNofileHardLimit is called INR_OPEN_MAX in Linux.
DefaultNofileHardLimit = 4096
// DefaultMemlockLimit is called MLOCK_LIMIT in Linux.
DefaultMemlockLimit = 64 * 1024
// DefaultMsgqueueLimit is called MQ_BYTES_MAX in Linux.
DefaultMsgqueueLimit = 819200
)
// InitRLimits is a map of initial rlimits set by Linux in
// include/asm-generic/resource.h.
var InitRLimits = map[int]RLimit{
RLIMIT_CPU: {RLimInfinity, RLimInfinity},
RLIMIT_FSIZE: {RLimInfinity, RLimInfinity},
RLIMIT_DATA: {RLimInfinity, RLimInfinity},
RLIMIT_STACK: {DefaultStackSoftLimit, RLimInfinity},
RLIMIT_CORE: {0, RLimInfinity},
RLIMIT_RSS: {RLimInfinity, RLimInfinity},
RLIMIT_NPROC: {DefaultNprocLimit, DefaultNprocLimit},
RLIMIT_NOFILE: {DefaultNofileSoftLimit, DefaultNofileHardLimit},
RLIMIT_MEMLOCK: {DefaultMemlockLimit, DefaultMemlockLimit},
RLIMIT_AS: {RLimInfinity, RLimInfinity},
RLIMIT_LOCKS: {RLimInfinity, RLimInfinity},
RLIMIT_SIGPENDING: {0, 0},
RLIMIT_MSGQUEUE: {DefaultMsgqueueLimit, DefaultMsgqueueLimit},
RLIMIT_NICE: {0, 0},
RLIMIT_RTPRIO: {0, 0},
RLIMIT_RTTIME: {RLimInfinity, RLimInfinity},
}
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