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cmd/go/internal/modload: delete unused files

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This commit is contained in:
WuGuangyao 2024-07-18 22:04:06 +08:00
parent 70491a8111
commit b82d773317
3 changed files with 0 additions and 81 deletions
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28
src/cmd/go/internal/modload/stat_openfile.go
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// Copyright 2019 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
//go:build (js && wasm) || plan9
// On plan9, per http://9p.io/magic/man2html/2/access: “Since file permissions
// are checked by the server and group information is not known to the client,
// access must open the file to check permissions.”
//
// js,wasm is similar, in that it does not define syscall.Access.
package modload
import (
"io/fs"
"os"
)
// hasWritePerm reports whether the current user has permission to write to the
// file with the given info.
func hasWritePerm(path string, _ fs.FileInfo) bool {
if f, err := os.OpenFile(path, os.O_WRONLY, 0); err == nil {
f.Close()
return true
}
return false
}

32
src/cmd/go/internal/modload/stat_unix.go
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// Copyright 2019 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
//go:build unix
package modload
import (
"io/fs"
"os"
"syscall"
)
// hasWritePerm reports whether the current user has permission to write to the
// file with the given info.
//
// Although the root user on most Unix systems can write to files even without
// permission, hasWritePerm reports false if no appropriate permission bit is
// set even if the current user is root.
func hasWritePerm(path string, fi fs.FileInfo) bool {
if os.Getuid() == 0 {
// The root user can access any file, but we still want to default to
// read-only mode if the go.mod file is marked as globally non-writable.
// (If the user really intends not to be in readonly mode, they can
// pass -mod=mod explicitly.)
return fi.Mode()&0222 != 0
}
const W_OK = 0x2
return syscall.Access(path, W_OK) == nil
}

21
src/cmd/go/internal/modload/stat_windows.go
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// Copyright 2019 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
//go:build windows
package modload
import "io/fs"
// hasWritePerm reports whether the current user has permission to write to the
// file with the given info.
func hasWritePerm(_ string, fi fs.FileInfo) bool {
// Windows has a read-only attribute independent of ACLs, so use that to
// determine whether the file is intended to be overwritten.
//
// Per https://golang.org/pkg/os/#Chmod:
// “On Windows, only the 0200 bit (owner writable) of mode is used; it
// controls whether the file's read-only attribute is set or cleared.”
return fi.Mode()&0200 != 0
}