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unix: stop counting trailing NUL for abstract addresses starting with NUL

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Changes trailing-NUL-counting behavior for abstract addresses
starting with the NUL character to be the same as abstract
addresses starting with the @ character.

For golang/go#63579.

Change-Id: I2f26de4bcf614c4635ad188b1afa3d14ebd9a95f
Reviewed-on: https://go-review.googlesource.com/c/sys/+/535955
Reviewed-by: Ian Lance Taylor <iant@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
Reviewed-by: Benny Siegert <bsiegert@gmail.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
This commit is contained in:
F Y
2023-10-23 09:05:11 +00:00
committed by Gopher Robot
parent 1bfbee0e20
commit 1e638101df
5 changed files with 19 additions and 5 deletions
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windows/syscall_windows.go
+2 -1
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@@ -970,7 +970,8 @@ func (sa *SockaddrUnix) sockaddr() (unsafe.Pointer, int32, error) {
if n > 0 {
sl += int32(n) + 1
}
if sa.raw.Path[0] == '@' {
if sa.raw.Path[0] == '@' || (sa.raw.Path[0] == 0 && sl > 3) {
// Check sl > 3 so we don't change unnamed socket behavior.
sa.raw.Path[0] = 0
// Don't count trailing NUL for abstract address.
sl--