seccomp: add semctl() to the syscall whitelist

PATCH New Paul Moore 1 participant 1 message Aug 14, 2014

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Paul Moore

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2014-08-14 17:19 UTC #0 lore raw

PATCH 1/1 seccomp: add semctl() to the syscall whitelist

QEMU needs to call semctl() for correct operation. This particular problem was identified on shutdown with the following commandline:

 # qemu -sandbox on -monitor stdio \
   -device intel-hda -device hda-duplex -vnc :0

Signed-off-by Paul Moore <[email protected]>

---
 qemu-seccomp.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

qemu-seccomp.c +2 -1

index ea8094d..0503764 100644
@@ -230,7 +230,8 @@ static const struct QemuSeccompSyscall seccomp_whitelist[] = {
     { SCMP_SYS(timerfd_create), 240 },
     { SCMP_SYS(shmctl), 240 },
     { SCMP_SYS(mlock), 240 },
-    { SCMP_SYS(munlock), 240 }
+    { SCMP_SYS(munlock), 240 },
+    { SCMP_SYS(semctl), 240 }
 };
 
 int seccomp_start(void)