selinux: split up mac_selinux_have() from mac_selinux_use()

Let's distuingish the cases where our code takes an active role in
selinux management, or just passively reports whatever selinux
properties are set.

mac_selinux_have() now checks whether selinux is around for the passive
stuff, and mac_selinux_use() for the active stuff. The latter checks the
former, plus also checks UID == 0, under the assumption that only when
we run priviliged selinux management really makes sense.

Fixes: #1941

1 files changed, 1 insertions, 1 deletions

diff --git a/src/journal/journald-stream.c b/src/journal/journald-stream.c
index 07a0f1bf41..131fcdac42 100644
--- a/src/journal/journald-stream.c
+++ b/src/journal/journald-stream.c
@@ -493,7 +493,7 @@ static int stdout_stream_install(Server *s, int fd, StdoutStream **ret) {
         if (r < 0)
                 return log_error_errno(r, "Failed to determine peer credentials: %m");
 
-        if (mac_selinux_use()) {
+        if (mac_selinux_have()) {
                 r = getpeersec(fd, &stream->label);
                 if (r < 0 && r != -EOPNOTSUPP)
                         (void) log_warning_errno(r, "Failed to determine peer security context: %m");