8dc2499aa6
gotools/ * Makefile.am (go_cmd_cgo_files): Add ast_go118.go (check-go-tool): Copy golang.org/x/tools directories. * Makefile.in: Regenerate. Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/384695
20 lines
518 B
Go
20 lines
518 B
Go
// Copyright 2018 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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//go:build aix || darwin || solaris
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package unix
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import "syscall"
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//extern __go_fcntl_uintptr
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func fcntl(uintptr, uintptr, uintptr) (uintptr, uintptr)
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func IsNonblock(fd int) (nonblocking bool, err error) {
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flag, e1 := fcntl(uintptr(fd), syscall.F_GETFL, 0)
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if e1 != 0 {
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return false, syscall.Errno(e1)
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}
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return flag&syscall.O_NONBLOCK != 0, nil
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}
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