From 4d5bd50ab26f6233206c08364430270876c37b63 Mon Sep 17 00:00:00 2001 From: Lennart Poettering Date: Tue, 27 Dec 2016 16:50:02 +0100 Subject: seccomp: minor simplifications for is_seccomp_available() --- src/shared/seccomp-util.c | 15 ++++++++------- 1 file changed, 8 insertions(+), 7 deletions(-) (limited to 'src/shared/seccomp-util.c') diff --git a/src/shared/seccomp-util.c b/src/shared/seccomp-util.c index 497426f605..2c73cb8fa4 100644 --- a/src/shared/seccomp-util.c +++ b/src/shared/seccomp-util.c @@ -204,21 +204,22 @@ finish: } static bool is_basic_seccomp_available(void) { - int r; - r = prctl(PR_GET_SECCOMP, 0, 0, 0, 0); - return r >= 0; + return prctl(PR_GET_SECCOMP, 0, 0, 0, 0) >= 0; } static bool is_seccomp_filter_available(void) { - int r; - r = prctl(PR_SET_SECCOMP, SECCOMP_MODE_FILTER, NULL, 0, 0); - return r < 0 && errno == EFAULT; + return prctl(PR_SET_SECCOMP, SECCOMP_MODE_FILTER, NULL, 0, 0) < 0 && + errno == EFAULT; } bool is_seccomp_available(void) { static int cached_enabled = -1; + if (cached_enabled < 0) - cached_enabled = is_basic_seccomp_available() && is_seccomp_filter_available(); + cached_enabled = + is_basic_seccomp_available() && + is_seccomp_filter_available(); + return cached_enabled; } -- cgit v1.2.3-54-g00ecf