Function TempFile

lib/osutil/tempfile.go:49–65

TempFile creates a new temporary file in the directory dir with a name beginning with prefix, opens the file for reading and writing, and returns the resulting *os.File. If dir is the empty string, TempFile uses the default directory for temporary files (see os.TempDir). Multiple programs calling Te

(filesystem fs.Filesystem, dir, prefix string)

// to find the pathname of the file. It is the caller's responsibility
// to remove the file when no longer needed.
func TempFile(filesystem fs.Filesystem, dir, prefix string) (f fs.File, err error) {
	nconflict := 0
	for range 10000 {
		name := filepath.Join(dir, prefix+nextSuffix())
		f, err = filesystem.OpenFile(name, fs.OptReadWrite|fs.OptCreate|fs.OptExclusive, 0o600)
		if fs.IsExist(err) {
			if nconflict++; nconflict > 10 {
				randmu.Lock()
				rand = reseed()
				randmu.Unlock()
			}
			continue
		}
		break
	}
	return
}