instance: turn error into debug message for missing ujail binary

Since commit 557f11b3a20f ("instance: provide error feedback if ujail
binary is missing") worrying log spam of the form "unable to find
/sbin/jail ..." may be encountered.

This corresponds with the changes done in the upstream commit
bcb86554f1b4 ("instance: add 'requirejail' attribute").

Fixes: 557f11b3a20f ("instance: provide error feedback if ujail binary is missing")
Ref: https://forum.openwrt.org/t/openwrt-19-07-2-service-release/57066
Signed-off-by: Petr Štetiar <ynezz@true.cz>

diff --git a/service/instance.c b/service/instance.c
index e5615d5c2f02a282c997aeb7ba5e2070e43d3ada..35d398c360b606ff80f2a733998e9e0d57637f1c 100644 (file)
--- a/service/instance.c
+++ b/service/instance.c
@@ -800,7 +800,7 @@ instance_jail_parse(struct service_instance *in, struct blob_attr *attr)
 
        r = stat(UJAIL_BIN_PATH, &s);
        if (r < 0) {
-               ERROR("unable to find %s: %m (%d)\n", UJAIL_BIN_PATH, r);
+               DEBUG(2, "unable to find %s: %m (%d)\n", UJAIL_BIN_PATH, r);
                return 0;
        }