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Etienne PerotandgVisor bot
8d1cd3dbae
This is meant to make #12557 possible to implement, i.e. making it possible for the seccomp configuration to specify actions other than deny/allow in the main `runsc` configuration. This change doesn't do that but it adds the structures to make that possible. PiperOrigin-RevId: 868246148
62 lines
1.8 KiB
Go
62 lines
1.8 KiB
Go
// Copyright 2021 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 systrap
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import (
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"golang.org/x/sys/unix"
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"gvisor.dev/gvisor/pkg/abi/linux"
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"gvisor.dev/gvisor/pkg/seccomp"
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)
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func appendSysThreadArchSeccompRules(rules []seccomp.RuleSet) []seccomp.RuleSet {
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return append(rules, []seccomp.RuleSet{
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{
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// Rules for trapping vsyscall access.
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Rules: seccomp.MakeSyscallRules(map[uintptr]seccomp.SyscallRule{
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unix.SYS_GETTIMEOFDAY: seccomp.MatchAll{},
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unix.SYS_TIME: seccomp.MatchAll{},
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unix.SYS_GETCPU: seccomp.MatchAll{}, // SYS_GETCPU was not defined in package syscall on amd64.
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}),
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Action: seccomp.Trap,
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Vsyscall: true,
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},
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{
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Rules: seccomp.MakeSyscallRules(map[uintptr]seccomp.SyscallRule{
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unix.SYS_ARCH_PRCTL: seccomp.Or{
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seccomp.PerArg{
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seccomp.EqualTo(linux.ARCH_SET_FS),
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seccomp.AnyValue{},
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seccomp.AnyValue{},
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seccomp.AnyValue{},
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seccomp.AnyValue{},
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seccomp.AnyValue{},
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seccomp.GreaterThan(stubStart), // rip
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},
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seccomp.PerArg{
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seccomp.EqualTo(linux.ARCH_GET_FS),
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seccomp.AnyValue{},
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seccomp.AnyValue{},
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seccomp.AnyValue{},
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seccomp.AnyValue{},
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seccomp.AnyValue{},
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seccomp.GreaterThan(stubStart), // rip
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},
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},
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}),
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Action: seccomp.Allow,
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},
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}...)
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}
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