Better error messages when using -L, -R or -U on platforms that do not support it.

diff --git a/src/tincd.c b/src/tincd.c
index 3883ec2..5d71589 100644 (file)
--- a/src/tincd.c
+++ b/src/tincd.c
@@ -127,13 +127,18 @@ static void usage(bool status) {
                                "  -D, --no-detach               Don't fork and detach.\n"
                                "  -d, --debug[=LEVEL]           Increase debug level or set it to LEVEL.\n"
                                "  -n, --net=NETNAME             Connect to net NETNAME.\n"
+#ifdef HAVE_MLOCKALL
                                "  -L, --mlock                   Lock tinc into main memory.\n"
+#endif
                                "      --logfile[=FILENAME]      Write log entries to a logfile.\n"
                                "      --pidfile=FILENAME        Write PID and control socket cookie to FILENAME.\n"
                                "      --bypass-security         Disables meta protocol security, for debugging.\n"
                                "  -o, --option[HOST.]KEY=VALUE  Set global/host configuration value.\n"
+#ifndef HAVE_MINGW
                                "  -R, --chroot                  chroot to NET dir at startup.\n"
-                               "  -U, --user=USER               setuid to given USER at startup.\n"                            "      --help                    Display this help and exit.\n"
+                               "  -U, --user=USER               setuid to given USER at startup.\n"
+#endif
+                               "      --help                    Display this help and exit.\n"
                                "      --version                 Output version information and exit.\n\n");
                printf("Report bugs to tinc@tinc-vpn.org.\n");
        }
@@ -162,7 +167,7 @@ static bool parse_options(int argc, char **argv) {
 
                        case 'L': /* no detach */
 #ifndef HAVE_MLOCKALL
-                               logger(DEBUG_ALWAYS, LOG_ERR, "%s not supported on this platform", "mlockall()");
+                               logger(DEBUG_ALWAYS, LOG_ERR, "The %s option is not supported on this platform.", argv[optind - 1]);
                                return false;
 #else
                                do_mlock = true;
@@ -187,6 +192,12 @@ static bool parse_options(int argc, char **argv) {
                                list_insert_tail(cmdline_conf, cfg);
                                break;
 
+#ifdef HAVE_MINGW
+                       case 'R':
+                       case 'U':
+                               logger(DEBUG_ALWAYS, LOG_ERR, "The %s option is not supported on this platform.", argv[optind - 1]);
+                               return false;
+#else
                        case 'R': /* chroot to NETNAME dir */
                                do_chroot = true;
                                break;
@@ -194,6 +205,7 @@ static bool parse_options(int argc, char **argv) {
                        case 'U': /* setuid to USER */
                                switchuser = optarg;
                                break;
+#endif
 
                        case 1:   /* show help */
                                show_help = true;
@@ -306,14 +318,7 @@ static void free_names(void) {
 
 static bool drop_privs(void) {
 #ifdef HAVE_MINGW
-       if (switchuser) {
-               logger(DEBUG_ALWAYS, LOG_ERR, "%s not supported on this platform", "-U");
-               return false;
-       }
-       if (do_chroot) {
-               logger(DEBUG_ALWAYS, LOG_ERR, "%s not supported on this platform", "-R");
-               return false;
-       }
+       return false;
 #else
        uid_t uid = 0;
        if (switchuser) {