conf: warn when capabilities are disabled or libcap is not found

The reason for this warning, is that the project will compile and when it does
not work, it's not clear from the logs what the reason might be.

Signed-off-by: Sotir Danailov <sndanailov@gmail.com>

diff --git a/src/lxc/conf.c b/src/lxc/conf.c
index 6a14c60360094b86d57ed2f7341e33fd5c52c415..1410ebe54a4b78e50e12879ae02c67eac386d017 100644 (file)
--- a/src/lxc/conf.c
+++ b/src/lxc/conf.c
@@ -2944,6 +2944,10 @@ int parse_cap(const char *cap_name, __u32 *cap)
        if (strequal(cap_name, "none"))
                return -2;
 
+#if HAVE_LIBCAP == 0
+       WARN("capabilities are disabled or libcap not found");
+#endif
+
        for (size_t i = 0; i < end; i++) {
                if (!strequal(cap_name, caps_opt[i].name))
                        continue;