Файловый менеджер - Редактировать - /usr/local/go/src/os/exec/internal/fdtest/exists_unix.go
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// 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 || wasm // 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 }
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