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test(libkernel): check close-on-exec on a received host descriptor

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The only MSG_CMSG_CLOEXEC case received sockets, whose F_GETFD reads the
guest's close-on-exec set, so it passed whether or not the received host
descriptor was marked. A pipe end goes through unchanged, so receiving
one with the flag now has to read back FD_CLOEXEC.

Co-Authored-By: Claude Opus 5.5 <[email protected]>
This commit is contained in:
milescovielloandClaude Opus 5.5 committed 2026-10-21 18:43:15 +00:00
1 parent 201f809056
commit 9d2f3fb577
1 file changed
+12
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core/libs/tests/GuestSocketRights.cpp
+12
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@@ -133,6 +133,18 @@ static void CheckPassedPipe(const int (&pair)[2]) {
Require(close_nid_postfix(writer) == 0);
Require(read_nid_postfix(pipe[0], text, sizeof(text)) == 0);
Require(close_nid_postfix(pipe[0]) == 0);
int closing[2] = {-1, -1};
Require(pipe_nid_postfix(closing) == 0);
control = RightsControl({closing[1]}, length);
Require(SendWith(pair[0], "exec", control.data(), length) == 4);
Require(close_nid_postfix(closing[1]) == 0);
const auto marked = ReceiveWith(pair[1], Space(sizeof(int)), ControlCloseOnExec);
Require(marked.bytes == 4 && marked.controlLength == Space(sizeof(int)));
RequireRecord(marked, 1);
const int markedWriter = ReceivedDescriptor(marked, 0);
Require(fcntl_nid_postfix(markedWriter, GetDescriptorFlags) == 1);
Require(close_nid_postfix(markedWriter) == 0 && close_nid_postfix(closing[0]) == 0);
}
static void CheckPassedSockets(const int (&pair)[2]) {