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selftests/ipc: skip msgque test when MSG_COPY is unsupported 

msgque kselftest uses msgrcv(..., MSG_COPY) to copy messages.  When the
kernel is built without CONFIG_CHECKPOINT_RESTORE, prepare_copy() is
stubbed out and msgrcv() returns -ENOSYS.  The test currently reports this
as a failure even though it is simply a missing feature/configuration.

Skip the test when msgrcv() fails with ENOSYS.

Link: https://lkml.kernel.org/r/20260210135359.178636-1-jouyeol8739@gmail.com
Signed-off-by: UYeol Jo <jouyeol8739@gmail.com>
Cc: Shuah Khan <shuah@kernel.org>
Cc: Wei Yang <richard.weiyang@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
master
UYeol Jo 2026-02-10 22:53:59 +09:00 committed by Andrew Morton
parent 513d08ace4
commit 225ba47fb9
1 changed files with 3 additions and 0 deletions
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3
tools/testing/selftests/ipc/msgque.c
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@ -161,6 +161,9 @@ int dump_queue(struct msgque_data *msgque)
ret = msgrcv(msgque->msq_id, &msgque->messages[i].mtype,
MAX_MSG_SIZE, i, IPC_NOWAIT | MSG_COPY);
if (ret < 0) {
if (errno == ENOSYS)
ksft_exit_skip("MSG_COPY not supported\n");
ksft_test_result_fail("Failed to copy IPC message: %m (%d)\n", errno);
return -errno;
}