63 lines
1.1 KiB
Go
63 lines
1.1 KiB
Go
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// Copyright 2017 The Periph Authors. All rights reserved.
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// Use of this source code is governed under the Apache License, Version 2.0
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// that can be found in the LICENSE file.
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package sysfs
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import (
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"io"
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"periph.io/x/periph/host/fs"
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)
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var ioctlOpen = ioctlOpenDefault
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func ioctlOpenDefault(path string, flag int) (ioctlCloser, error) {
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f, err := fs.Open(path, flag)
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if err != nil {
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return nil, err
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}
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return f, nil
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}
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var fileIOOpen = fileIOOpenDefault
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func fileIOOpenDefault(path string, flag int) (fileIO, error) {
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f, err := fs.Open(path, flag)
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if err != nil {
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return nil, err
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}
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return f, nil
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}
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type ioctlCloser interface {
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io.Closer
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fs.Ioctler
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}
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type fileIO interface {
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Fd() uintptr
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fs.Ioctler
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io.Closer
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io.Reader
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io.Seeker
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io.Writer
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}
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// seekRead seeks to the beginning of a file and reads it.
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func seekRead(f fileIO, b []byte) (int, error) {
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if _, err := f.Seek(0, 0); err != nil {
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return 0, err
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}
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return f.Read(b)
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}
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// seekWrite seeks to the beginning of a file and writes to it.
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func seekWrite(f fileIO, b []byte) error {
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if _, err := f.Seek(0, 0); err != nil {
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return err
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}
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_, err := f.Write(b)
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return err
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}
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