go exists_unix 源码
golang exists_unix 代码
文件路径：/src/os/exec/internal/fdtest/exists_unix.go
// Copyright 2021 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 fdtest provides test helpers for working with file descriptors across exec.
package fdtest
import (
"syscall"
)
// Exists returns true if fd is a valid file descriptor.
func Exists(fd uintptr) bool {
var s syscall.Stat_t
err := syscall.Fstat(int(fd), &s)
return err != syscall.EBADF
}
相关信息
相关文章
0
赞
热门推荐
-
2、 - 优质文章
-
3、 gate.io
-
7、 golang
-
9、 openharmony
-
10、 Vue中input框自动聚焦