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unix: allow non-padded SockaddrIUCV

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This was the intention from the start, but due to a logic error in the
handling of slices the implementation only handled minimum 8 character
strings.

This commit also improves the tests.

Change-Id: I6b0ed00bbd8a2faf90ca4a3ebe6218d3c5d6e8bf
GitHub-Last-Rev: 5b6dbc0682
GitHub-Pull-Request: golang/sys#77
Reviewed-on: https://go-review.googlesource.com/c/sys/+/248778
Reviewed-by: Matt Layher <mdlayher@gmail.com>
Run-TryBot: Matt Layher <mdlayher@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
This commit is contained in:
Christian Svensson
2020-08-17 15:34:28 +00:00
committed by Matt Layher
parent 3ff754bf58
commit cc1be6b9e0
2 changed files with 75 additions and 2 deletions
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7
unix/syscall_linux.go
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@@ -902,10 +902,13 @@ func (sa *SockaddrIUCV) sockaddr() (unsafe.Pointer, _Socklen, error) {
sa.raw.User_id[i] = ' '
sa.raw.Name[i] = ' '
}
for i, b := range []byte(sa.UserID[:8]) {
if len(sa.UserID) > 8 || len(sa.Name) > 8 {
return nil, 0, EINVAL
}
for i, b := range []byte(sa.UserID[:]) {
sa.raw.User_id[i] = int8(b)
}
for i, b := range []byte(sa.Name[:8]) {
for i, b := range []byte(sa.Name[:]) {
sa.raw.Name[i] = int8(b)
}
return unsafe.Pointer(&sa.raw), SizeofSockaddrIUCV, nil