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seccomp: add cacheflush to whitelist 

cacheflush is an arm-specific syscall that qemu built for arm
uses. Add it to the whitelist, but only if we're linking with
a recent enough libseccomp.

Signed-off-by: Andrew Jones <drjones@redhat.com>
This commit is contained in:
Andrew Jones 2015-11-02 23:53:26 +01:00 committed by Eduardo Otubo
parent 8337c6cbc3
commit 47d2067af3
1 changed files with 12 additions and 1 deletions
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13
qemu-seccomp.c
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@ -16,6 +16,14 @@
#include <seccomp.h>
#include "sysemu/seccomp.h"
#if SCMP_VER_MAJOR >= 3
#define HAVE_CACHEFLUSH
#elif SCMP_VER_MAJOR == 2 && SCMP_VER_MINOR >= 3
#define HAVE_CACHEFLUSH
#elif SCMP_VER_MAJOR == 2 && SCMP_VER_MINOR == 2 && SCMP_VER_MICRO >= 3
#define HAVE_CACHEFLUSH
#endif
struct QemuSeccompSyscall {
int32_t num;
uint8_t priority;
@ -238,7 +246,10 @@ static const struct QemuSeccompSyscall seccomp_whitelist[] = {
{ SCMP_SYS(inotify_init1), 240 },
{ SCMP_SYS(inotify_add_watch), 240 },
{ SCMP_SYS(mbind), 240 },
{ SCMP_SYS(memfd_create), 240 }
{ SCMP_SYS(memfd_create), 240 },
#ifdef HAVE_CACHEFLUSH
{ SCMP_SYS(cacheflush), 240 },
#endif
};
int seccomp_start(void)