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libqtest: check for g_setenv() failure

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g_setenv() can fail; check for it when starting a QEMU process
when we set the QEMU_AUDIO_DRV environment variable.

Because this happens after fork() reporting an exact message
via printf() is a bad idea; just exit(1), as we already do
for the case of execlp() failure.

Fixes: Coverity CID 1460117
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20210820163750.9106-1-peter.maydell@linaro.org>
Signed-off-by: Thomas Huth <thuth@redhat.com>
This commit is contained in:
Peter Maydell 2021-08-20 17:37:50 +01:00 committed by Thomas Huth
parent 1ea47ede63
commit aca68d95c5
1 changed files with 3 additions and 1 deletions
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4
tests/qtest/libqtest.c
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@ -301,7 +301,9 @@ QTestState *qtest_init_without_qmp_handshake(const char *extra_args)
s->expected_status = 0;
s->qemu_pid = fork();
if (s->qemu_pid == 0) {
g_setenv("QEMU_AUDIO_DRV", "none", true);
if (!g_setenv("QEMU_AUDIO_DRV", "none", true)) {
exit(1);
}
execlp("/bin/sh", "sh", "-c", command, NULL);
exit(1);
}