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Etienne PerotandgVisor bot
056a85f39d
This change marks all ABI-related structs with `structs.HostLayout`, which was introduced in Go 1.23: https://pkg.go.dev/[email protected]#HostLayout This is intended to force the Go compiler to preserve the layout of the struct, removing it from the liberty of reordering fields as it sees fit. Adds a check automatically generated by our `go_library` rule wrapper which verifies this recursively for all exported structs in a package. Fixes issue #10693. PiperOrigin-RevId: 860238103
94 lines
3.0 KiB
Go
94 lines
3.0 KiB
Go
// Copyright 2018 The gVisor Authors.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package linux
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import (
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"structs"
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)
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// Resources for getrlimit(2)/setrlimit(2)/prlimit(2).
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const (
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RLIMIT_CPU = 0
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RLIMIT_FSIZE = 1
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RLIMIT_DATA = 2
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RLIMIT_STACK = 3
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RLIMIT_CORE = 4
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RLIMIT_RSS = 5
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RLIMIT_NPROC = 6
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RLIMIT_NOFILE = 7
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RLIMIT_MEMLOCK = 8
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RLIMIT_AS = 9
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RLIMIT_LOCKS = 10
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RLIMIT_SIGPENDING = 11
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RLIMIT_MSGQUEUE = 12
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RLIMIT_NICE = 13
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RLIMIT_RTPRIO = 14
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RLIMIT_RTTIME = 15
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)
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// RLimit corresponds to Linux's struct rlimit.
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type RLimit struct {
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_ structs.HostLayout
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// Cur specifies the soft limit.
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Cur uint64
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// Max specifies the hard limit.
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Max uint64
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}
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const (
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// RLimInfinity is RLIM_INFINITY on Linux.
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RLimInfinity = ^uint64(0)
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// DefaultStackSoftLimit is called _STK_LIM in Linux.
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DefaultStackSoftLimit = 8 * 1024 * 1024
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// DefaultNprocLimit is defined in kernel/fork.c:set_max_threads, and
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// called MAX_THREADS / 2 in Linux.
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DefaultNprocLimit = FUTEX_TID_MASK / 2
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// DefaultNofileSoftLimit is called INR_OPEN_CUR in Linux.
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DefaultNofileSoftLimit = 1024
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// DefaultNofileHardLimit is called INR_OPEN_MAX in Linux.
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DefaultNofileHardLimit = 4096
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// DefaultMemlockLimit is called MLOCK_LIMIT in Linux.
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DefaultMemlockLimit = 64 * 1024
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// DefaultMsgqueueLimit is called MQ_BYTES_MAX in Linux.
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DefaultMsgqueueLimit = 819200
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)
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// InitRLimits is a map of initial rlimits set by Linux in
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// include/asm-generic/resource.h.
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var InitRLimits = map[int]RLimit{
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RLIMIT_CPU: {Cur: RLimInfinity, Max: RLimInfinity},
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RLIMIT_FSIZE: {Cur: RLimInfinity, Max: RLimInfinity},
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RLIMIT_DATA: {Cur: RLimInfinity, Max: RLimInfinity},
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RLIMIT_STACK: {Cur: DefaultStackSoftLimit, Max: RLimInfinity},
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RLIMIT_CORE: {Cur: 0, Max: RLimInfinity},
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RLIMIT_RSS: {Cur: RLimInfinity, Max: RLimInfinity},
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RLIMIT_NPROC: {Cur: DefaultNprocLimit, Max: DefaultNprocLimit},
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RLIMIT_NOFILE: {Cur: DefaultNofileSoftLimit, Max: DefaultNofileHardLimit},
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RLIMIT_MEMLOCK: {Cur: DefaultMemlockLimit, Max: DefaultMemlockLimit},
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RLIMIT_AS: {Cur: RLimInfinity, Max: RLimInfinity},
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RLIMIT_LOCKS: {Cur: RLimInfinity, Max: RLimInfinity},
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RLIMIT_SIGPENDING: {Cur: 0, Max: 0},
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RLIMIT_MSGQUEUE: {Cur: DefaultMsgqueueLimit, Max: DefaultMsgqueueLimit},
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RLIMIT_NICE: {Cur: 0, Max: 0},
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RLIMIT_RTPRIO: {Cur: 0, Max: 0},
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RLIMIT_RTTIME: {Cur: RLimInfinity, Max: RLimInfinity},
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}
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