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9c8c27a318
LsfSocket, SetLsfPromisc and NetlinkRIB currently don't force the CLOEXEC flag on the sockets they create. While the former two functions are deprecated, NetlinkRIB is called by various functions related to net.Interface. Add a helper to create CLOEXEC sockets, and use it from SetLsfPromisc and NetlinkRIB. LsfSocket is unchanged since we don't want to break callers. Fixes #36053 Change-Id: I72fe2b167996797698d8a44b0d28165045c42d3c Reviewed-on: https://go-review.googlesource.com/c/go/+/210517 Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
30 lines
632 B
Go
30 lines
632 B
Go
// Copyright 2019 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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package syscall
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// This is a stripped down version of sysSocket from net/sock_cloexec.go.
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func cloexecSocket(family, sotype, proto int) (int, error) {
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s, err := Socket(family, sotype|SOCK_CLOEXEC, proto)
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switch err {
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case nil:
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return s, nil
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default:
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return -1, err
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case EINVAL:
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}
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ForkLock.RLock()
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s, err = Socket(family, sotype, proto)
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if err == nil {
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CloseOnExec(s)
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}
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ForkLock.RUnlock()
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if err != nil {
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Close(s)
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return -1, err
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}
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return s, nil
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}
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