snapshot: sagernet/gvisor v0.0.0-20250811.0-sing-box-mod.1
Содержимое пина, зафиксированного в go.mod sing-box-lx, одним коммитом без истории. Полная история SagerNet/gvisor — 1.45 ГБ и клонируется в каждой CI-джобе; наша дельта — одна вставка в одну функцию, история для неё не нужна. Module path github.com/sagernet/gvisor сохранён намеренно: на него опирается replace-директива суперпроекта. Патч поверх — отдельным коммитом, чтобы дельта читалась одним git show и переносилась на новый пин копированием. SPECS/TASKS/048-GVISOR_HANDSHAKE_NIL_CRASH
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45
pkg/hostsyscall/hostsyscall.go
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45
pkg/hostsyscall/hostsyscall.go
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// Copyright 2024 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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//go:build linux
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// +build linux
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// Package hostsyscall provides functions like unix.RawSyscall, but without the
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// overhead of multiple stack frame allocations.
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//
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// This is mostly relevant for platform/kvm which needs to execute some function
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// call chains in a go:nosplit environment. Debug builds specifically make using
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// unix.RawSyscall variants infeasible.
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package hostsyscall
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import (
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"golang.org/x/sys/unix"
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)
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// RawSyscall6 is a copy of runtime.Syscall6.
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func RawSyscall6(trap, a1, a2, a3, a4, a5, a6 uintptr) (r1 uintptr, errno unix.Errno)
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// RawSyscall is a copy of runtime.Syscall6, but only uses the first three arguments.
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func RawSyscall(trap, a1, a2, a3 uintptr) (r1 uintptr, errno unix.Errno)
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// Variants of runtime.Syscall6 that use slightly less stack space by only
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// returning errno.
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// RawSyscallErrno6 is like RawSyscall6, but only returns errno,
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// and 0 if successful.
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func RawSyscallErrno6(trap, a1, a2, a3, a4, a5, a6 uintptr) unix.Errno
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// RawSyscallErrno is like RawSyscall, but only returns errno,
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// and 0 if successful.
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func RawSyscallErrno(trap, a1, a2, a3 uintptr) unix.Errno
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96
pkg/hostsyscall/hostsyscall_amd64.s
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96
pkg/hostsyscall/hostsyscall_amd64.s
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// Copyright 2024 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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#include "textflag.h"
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// func RawSyscall6(trap, a1, a2, a3, a4, a5, a6 uintptr) (r1, errno)
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TEXT ·RawSyscall6(SB),NOSPLIT,$0-72
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MOVQ a1+8(FP), DI
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MOVQ a2+16(FP), SI
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MOVQ a3+24(FP), DX
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MOVQ a4+32(FP), R10
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MOVQ a5+40(FP), R8
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MOVQ a6+48(FP), R9
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MOVQ trap+0(FP), AX // syscall entry
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SYSCALL
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CMPQ AX, $0xfffffffffffff001
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JLS ok
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MOVQ $-1, r1+56(FP)
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NEGQ AX
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MOVQ AX, errno+64(FP)
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RET
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ok:
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MOVQ AX, r1+56(FP)
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MOVQ $0, errno+64(FP)
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RET
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// func RawSyscall(trap, a1, a2, a3 uintptr) (r1, errno)
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TEXT ·RawSyscall(SB),NOSPLIT,$0-48
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MOVQ a1+8(FP), DI
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MOVQ a2+16(FP), SI
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MOVQ a3+24(FP), DX
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MOVQ $0, R10
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MOVQ $0, R8
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MOVQ $0, R9
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MOVQ trap+0(FP), AX // syscall entry
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SYSCALL
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CMPQ AX, $0xfffffffffffff001
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JLS ok
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MOVQ $-1, r1+32(FP)
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NEGQ AX
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MOVQ AX, errno+40(FP)
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RET
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ok:
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MOVQ AX, r1+32(FP)
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MOVQ $0, errno+40(FP)
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RET
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// func RawSyscallErrno6(trap, a1, a2, a3, a4, a5, a6 uintptr) (ret unix.Errno)
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TEXT ·RawSyscallErrno6(SB),NOSPLIT,$0-64
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MOVQ a1+8(FP), DI
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MOVQ a2+16(FP), SI
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MOVQ a3+24(FP), DX
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MOVQ a4+32(FP), R10
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MOVQ a5+40(FP), R8
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MOVQ a6+48(FP), R9
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MOVQ trap+0(FP), AX // syscall entry
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SYSCALL
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CMPQ AX, $0xfffffffffffff001
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JLS ok
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NEGQ AX
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MOVQ AX, ret+56(FP)
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RET
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ok:
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MOVQ $0, ret+56(FP)
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RET
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// func RawSyscallErrno(trap, a1, a2, a3 uintptr) (ret unix.Errno)
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TEXT ·RawSyscallErrno(SB),NOSPLIT,$0-40
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MOVQ a1+8(FP), DI
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MOVQ a2+16(FP), SI
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MOVQ a3+24(FP), DX
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MOVQ $0, R10
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MOVQ $0, R8
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MOVQ $0, R9
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MOVQ trap+0(FP), AX // syscall entry
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SYSCALL
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CMPQ AX, $0xfffffffffffff001
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JLS ok
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NEGQ AX
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MOVQ AX, ret+32(FP)
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RET
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ok:
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MOVQ $0, ret+32(FP)
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RET
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97
pkg/hostsyscall/hostsyscall_arm64.s
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97
pkg/hostsyscall/hostsyscall_arm64.s
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// Copyright 2024 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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#include "textflag.h"
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// func RawSyscall6(trap, a1, a2, a3, a4, a5, a6 uintptr) (r1, errno)
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TEXT ·RawSyscall6(SB),NOSPLIT,$0-72
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MOVD trap+0(FP), R8 // syscall entry
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MOVD a1+8(FP), R0
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MOVD a2+16(FP), R1
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MOVD a3+24(FP), R2
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MOVD a4+32(FP), R3
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MOVD a5+40(FP), R4
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MOVD a6+48(FP), R5
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SVC
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CMN $4095, R0
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BCC ok
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MOVD $-1, R4
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MOVD R4, r1+56(FP)
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NEG R0, R0
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MOVD R0, errno+64(FP)
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RET
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ok:
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MOVD R0, r1+56(FP)
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MOVD ZR, errno+64(FP)
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RET
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// func RawSyscall(trap, a1, a2, a3 uintptr) (r1, errno)
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TEXT ·RawSyscall(SB),NOSPLIT,$0-48
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MOVD trap+0(FP), R8 // syscall entry
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MOVD a1+8(FP), R0
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MOVD a2+16(FP), R1
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MOVD a3+24(FP), R2
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MOVD ZR, R3
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MOVD ZR, R4
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MOVD ZR, R5
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SVC
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CMN $4095, R0
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BCC ok
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MOVD $-1, R4
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MOVD R4, r1+32(FP)
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NEG R0, R0
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MOVD R0, errno+40(FP)
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RET
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ok:
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MOVD R0, r1+32(FP)
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MOVD ZR, errno+40(FP)
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RET
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// func RawSyscallErrno6(trap, a1, a2, a3, a4, a5, a6 uintptr) (errno unix.Errno)
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TEXT ·RawSyscallErrno6(SB),NOSPLIT,$0-64
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MOVD trap+0(FP), R8 // syscall entry
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MOVD a1+8(FP), R0
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MOVD a2+16(FP), R1
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MOVD a3+24(FP), R2
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MOVD a4+32(FP), R3
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MOVD a5+40(FP), R4
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MOVD a6+48(FP), R5
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SVC
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CMN $4095, R0
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BCC ok
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NEG R0, R0
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MOVD R0, ret+56(FP) // errno
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RET
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ok:
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MOVD ZR, ret+56(FP) // errno
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RET
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// func RawSyscallErrno(trap, a1, a2, a3 uintptr) (errno unix.Errno)
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TEXT ·RawSyscallErrno(SB),NOSPLIT,$0-40
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MOVD trap+0(FP), R8 // syscall entry
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MOVD a1+8(FP), R0
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MOVD a2+16(FP), R1
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MOVD a3+24(FP), R2
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MOVD ZR, R3
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MOVD ZR, R4
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MOVD ZR, R5
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SVC
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CMN $4095, R0
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BCC ok
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NEG R0, R0
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MOVD R0, ret+32(FP) // errno
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RET
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ok:
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MOVD ZR, ret+32(FP) // errno
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RET
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6
pkg/hostsyscall/hostsyscall_state_autogen.go
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6
pkg/hostsyscall/hostsyscall_state_autogen.go
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// automatically generated by stateify.
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//go:build linux
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// +build linux
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package hostsyscall
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