117243aa02
Обновление снапшота с v0.0.0-20250811.0 на пин, которого требует sing-box после мержа 235 коммитов (upstream d620bbbf2 "Update gvisor to 20260727.0"). Прежний снапшот был взят 2026-08-04 ровно с той версии, на которой тогда стоял апстрим; разрыв возник 2026-08-05 вместе с его бампом. За год апстрим-gvisor изменил ~14 000 строк в 292 файлах. Значимое для нас — сетевой стек: tcp/connect.go (PMTU-discovery + исправление начального RTT/RTO: раньше задержка ACK внутри стека завышала стартовый таймаут на несколько RTT), tcp/snd.go, tcp/rcv.go, stack/conntrack.go, stack/packet_buffer.go. Всего 30 файлов в TCP и 37 в stack. Баг SPEC 048 апстрим НЕ исправил — проверено по коду новой версии: handleConnecting по-прежнему проверяет состояние endpoint'а, но не ep.h, а performHandshake так же зануляет h и отпускает мьютекс до Close(). Поэтому guard перенесён (12 строк) вместе со своим тестом (45 строк). Red/green проверен на новой базе: без guard'а тест падает с той же nil-паникой, что в полевом крашдампе; с ним зелёный.
93 lines
3 KiB
Go
93 lines
3 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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