From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:45570) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ZtNyp-0008SC-JZ for qemu-devel@nongnu.org; Mon, 02 Nov 2015 17:53:36 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1ZtNym-0005dc-Dj for qemu-devel@nongnu.org; Mon, 02 Nov 2015 17:53:35 -0500 Received: from mx1.redhat.com ([209.132.183.28]:48103) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ZtNym-0005dW-8E for qemu-devel@nongnu.org; Mon, 02 Nov 2015 17:53:32 -0500 From: Andrew Jones Date: Mon, 2 Nov 2015 23:53:26 +0100 Message-Id: <1446504806-7316-1-git-send-email-drjones@redhat.com> In-Reply-To: <1446212690-7656-2-git-send-email-eduardo.otubo@profitbricks.com> References: <1446212690-7656-2-git-send-email-eduardo.otubo@profitbricks.com> Subject: [Qemu-devel] [PATCH v3] seccomp: add cacheflush to whitelist List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: peter.maydell@linaro.org, eduardo.otubo@profitbricks.com 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 --- v3: deal with major and minor version number bumps v2: only add cacheflush if libseccomp supports it qemu-seccomp.c | 13 ++++++++++++- 1 file changed, 12 insertions(+), 1 deletion(-) diff --git a/qemu-seccomp.c b/qemu-seccomp.c index 80d034a8d5190..c831fe83ad500 100644 --- a/qemu-seccomp.c +++ b/qemu-seccomp.c @@ -16,6 +16,14 @@ #include #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) -- 1.8.3.1