os.Stat: permission denied => error(syscall.Errno) EACCES (13)-CodePudding

I'm creating a directory inside a unit test like this:

// The directory which is going to be created next to unit test executable.
const DirName string = "test-files"

Creating directory:

    // Create the directory if doesn't already exist.
    err := os.MkdirAll(DirName, os.ModeDir)
    if err != nil {
        return err
    }

    // Compose a sample file path to double-check its existence.
    pth := DirName   string(os.PathSeparator)   "samplefile.txt"


    exists, err := doesExist(pth)
    if err != nil {
        return err
    }

And checking file existence:


// Does file exist?
func doesExist(pth string) (bool, error) {

    // Check file existence
    // https://stackoverflow.com/a/10510718/3405291
    if _, err := os.Stat(pth); err != nil {
        if os.IsNotExist(err) {
            return false, nil
        } else {
            return true, err
        }
    }

    // Above conditions are skipped,
    // therefore file exists.
    return true, nil
}

The above code returns this error:

os.Stat: permission denied

error(syscall.Errno) EACCES (13)

I can double-check that the directory is actually created. But the permissions are d---------:

> ls -lh
d--------- 2 m3 users    6 Dec 23 20:30 test-files

How can I create the directory with the appropriate permissions?

CodePudding user response：

You're abusing the os.ModeDir constant. It's invented to serve as the bit mask to check whether the file's mode permissions bits (returned by, say, os.(*File).Stat indicate it's a directory.

The default permission mode bits to create a directory are 0777 but they are subject to umask.