英文:
How to get root of filesystem in Go in an OS-agnostic way
问题
我想以一种既适用于Windows又适用于Unix的方式获取文件系统的根目录。
我原以为可以这样做：
func fsRootDir() string {
s := os.Getenv("SystemDrive")
if s != "" {
return s
}
return "/"
}
然而，这种方法存在一些问题，所以我放弃了这种方法：
- 用户可以在Unix上创建一个名为
SystemDrive的环境变量，并设置为一些虚假的路径。 - 用户可以更改Windows上
SystemDrive环境变量的值为一些虚假的路径。
我查看了这个相关问题的答案，但这个答案也存在一些问题：
- 第一种选项依赖于
SystemDrive环境变量，但由于上述原因，无法保证在Unix或Windows上它将保持预期的值。 - 此答案中的所有其他选项都依赖于
os.TempDir。在Windows上，os.TempDir使用GetTempPath，返回%TMP%、%TEMP%、%USERPROFILE%或Windows目录中的第一个非空值。我不相信这些环境变量没有被修改过。
我还考虑了以下方法：
func fsRootDir() string {
if runtime.GOOS == "windows" {
return "C:"
}
return "/"
}
但我记得在某个地方读到过，在Windows上可以将文件系统根目录更改为除了C:之外的其他内容。
我应该如何以一种既适用于Windows又适用于Unix的方式获取文件系统的根目录？
英文:
I want to get the root directory of the filesystem in Go in such a way that it will work on both Windows and Unix.
I thought I could do something like
func fsRootDir() string {
s := os.Getenv("SystemDrive")
if s != "" {
return s
}
return "/"
}
However, there are a couple problems with this, so I rejected this approach:
- A user could create a
SystemDriveenvironment variable on Unix with some bogus path. - A user could change the value of the
SystemDriveenvironment variable on Windows to some bogus path.
I looked at this answer to a related question, but this also has some problems:
- The first option relies on the
SystemDriveenvironment variable, which for the reasons above is not guaranteed to hold the expected value on either Unix or Windows. - All other options in this answer rely on
os.TempDir. On Windows,os.TempDirusesGetTempPath, returning the first non-empty value from%TMP%,%TEMP%,%USERPROFILE%, or the Windows directory. I do not believe I can trust that these environment variables have not been modified.
I also considered
func fsRootDir() string {
if runtime.GOOS == "windows" {
return "C:"
}
return "/"
}
but I thought I read somewhere that it is possible to change the filesystem root on Windows to something other than C:.
How can I get the root directory of a filesystem in such a way that it will work on both Windows and Unix?
答案1
得分: 2
为什么不将两者结合起来？
func fsRootDir() string {
if runtime.GOOS == "windows" {
return os.Getenv("SystemDrive")
}
return "/"
}
用户可以将Windows上的SystemDrive环境变量的值更改为一些虚假的路径。
不，他们不能，SystemDrive是一个只读变量。
英文:
Why not combine the two?
func fsRootDir() string {
if runtime.GOOS == "windows" {
return os.Getenv("SystemDrive")
}
return "/"
}
> A user could change the value of the SystemDrive environment variable on Windows to some bogus path.
No they can't, SystemDrive is a read-only variable.
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