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
26 lines
665 B
Go
26 lines
665 B
Go
// Copyright 2021 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 dragonfly || freebsd || linux || netbsd || openbsd
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package net
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import (
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"syscall"
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)
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// Use a helper function to call fcntl. This is defined in C in
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// libgo/runtime.
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//extern __go_fcntl_uintptr
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func libc_fcntl(uintptr, uintptr, uintptr) (uintptr, uintptr)
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func fcntl(fd int, cmd int, arg int) (int, error) {
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syscall.Entersyscall()
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r, e := libc_fcntl(uintptr(fd), uintptr(cmd), uintptr(arg))
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syscall.Exitsyscall()
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if e != 0 {
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return int(r), syscall.Errno(e)
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}
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return int(r), nil
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}
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