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unix: in Linux sendmsgN actually send one normal byte

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A bug in CL 412497 caused us to set up an iovec for a dummy byte
but fail to use it

Fixes golang/go#56384

Change-Id: If56fea5c47e5c6fac92f9707d4c3dd78f7999a65
Reviewed-on: https://go-review.googlesource.com/c/sys/+/445255
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Reviewed-by: Tobias Klauser <tobias.klauser@gmail.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
Run-TryBot: Ian Lance Taylor <iant@google.com>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
This commit is contained in:
Ian Lance Taylor
2022-10-25 17:44:04 +00:00
committed by Gopher Robot
parent 95e765b1cc
commit 5726498127
2 changed files with 97 additions and 0 deletions
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unix/syscall_linux.go
+1
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@@ -1554,6 +1554,7 @@ func sendmsgN(fd int, iov []Iovec, oob []byte, ptr unsafe.Pointer, salen _Sockle
var iova [1]Iovec
iova[0].Base = &dummy
iova[0].SetLen(1)
iov = iova[:]
}
}
msg.Control = &oob[0]