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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
54 lines
1.6 KiB
Go
54 lines
1.6 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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"bytes"
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"fmt"
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"structs"
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)
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const (
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// UTSLen is the maximum length of strings contained in fields of
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// UtsName.
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UTSLen = 64
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)
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// UtsName represents struct utsname, the struct returned by uname(2).
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//
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// +marshal
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type UtsName struct {
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_ structs.HostLayout
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Sysname [UTSLen + 1]byte
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Nodename [UTSLen + 1]byte
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Release [UTSLen + 1]byte
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Version [UTSLen + 1]byte
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Machine [UTSLen + 1]byte
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Domainname [UTSLen + 1]byte
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}
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// utsNameString converts a UtsName entry to a string without NULs.
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func utsNameString(s [UTSLen + 1]byte) string {
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// The NUL bytes will remain even in a cast to string. We must
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// explicitly strip them.
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return string(bytes.TrimRight(s[:], "\x00"))
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}
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func (u UtsName) String() string {
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return fmt.Sprintf("{Sysname: %s, Nodename: %s, Release: %s, Version: %s, Machine: %s, Domainname: %s}",
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utsNameString(u.Sysname), utsNameString(u.Nodename), utsNameString(u.Release),
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utsNameString(u.Version), utsNameString(u.Machine), utsNameString(u.Domainname))
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}
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