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syscall: drop fallback to accept in Accept on Linux
The minimum required Linux kernel version for Go 1.18 will be changed to 2.6.32, see #45964. The current minimum required version is 2.6.23 and accept4 was added in 2.6.28, so the fallback to accept in Accept on Linux can be removed. For #45964 Change-Id: I78fc4e5b58417bbc540912c9dbf1b1b3db888fea Reviewed-on: https://go-review.googlesource.com/c/go/+/346849 Trust: Tobias Klauser <tobias.klauser@gmail.com> Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com> TryBot-Result: Go Bot <gobot@golang.org> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
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@ -542,11 +542,7 @@ func anyToSockaddr(rsa *RawSockaddrAny) (Sockaddr, error) {
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func Accept(fd int) (nfd int, sa Sockaddr, err error) {
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var rsa RawSockaddrAny
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var len _Socklen = SizeofSockaddrAny
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// Try accept4 first for Android, then try accept for kernel older than 2.6.28
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nfd, err = accept4(fd, &rsa, &len, 0)
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if err == ENOSYS {
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nfd, err = accept(fd, &rsa, &len)
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}
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if err != nil {
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return
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}
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