initialize the capabilties for attach and unshare

src/lxc/lxc_attach.c

@@ -33,6 +33,7 @@
 #include "commands.h"
 #include "arguments.h"
 #include "namespace.h"
+#include "caps.h"
 #include "log.h"
 
 lxc_log_define(lxc_attach_ui, lxc);
@@ -63,6 +64,10 @@ int main(int argc, char *argv[], char *envp[])
 	uid_t uid;
 	char *curdir;
 
+	ret = lxc_caps_init();
+	if (ret)
+		return ret;
+
 	ret = lxc_arguments_parse(&my_args, argc, argv);
 	if (ret)
 		return ret;

src/lxc/lxc_unshare.c

@@ -185,6 +185,10 @@ int main(int argc, char *argv[])
 
 	args = &argv[optind];
 
+	ret = lxc_caps_init();
+	if (ret)
+		return ret;
+
         ret = lxc_fill_namespace_flags(namespaces, &flags);
  	if (ret)
 		usage(argv[0]);