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qtest: kill orphaned qtest QEMU processes on FreeBSD

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On Linux we use PR_SET_PDEATHSIG to kill orphaned QEMU processes
if we fail to call qtest_quit(), or the test program aborts/segvs.
This prevents meson from hanging forever due to the orphaned
process keeping stdout open.

On FreeBSD we can achieve the same using PROC_PDEATHSIG_CTL, which
gives us the equivalent protection against hangs.

Signed-off-by: "Daniel P. Berrangé" <berrange@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20230912184130.3056054-3-berrange@redhat.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20230914155422.426639-6-alex.bennee@linaro.org>
This commit is contained in:
Daniel P. Berrangé 2023-09-14 16:54:18 +01:00 committed by Alex Bennée
parent 81395b6ec8
commit 49e9f8644b
1 changed files with 7 additions and 0 deletions
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7
tests/qtest/libqtest.c
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@ -24,6 +24,9 @@
#ifdef __linux__
#include <sys/prctl.h>
#endif /* __linux__ */
#ifdef __FreeBSD__
#include <sys/procctl.h>
#endif /* __FreeBSD__ */
#include "libqtest.h"
#include "libqmp.h"
@ -414,6 +417,10 @@ static QTestState *G_GNUC_PRINTF(1, 2) qtest_spawn_qemu(const char *fmt, ...)
*/
prctl(PR_SET_PDEATHSIG, SIGKILL, 0, 0, 0);
#endif /* __linux__ */
#ifdef __FreeBSD__
int sig = SIGKILL;
procctl(P_PID, getpid(), PROC_PDEATHSIG_CTL, &sig);
#endif /* __FreeBSD__ */
if (!g_setenv("QEMU_AUDIO_DRV", "none", true)) {
exit(1);
}