Treat netname="." in a special way.

Treat netname "." in a special way as if there was no netname
specified.  Before, f.e. tincd -n. -k didn't work as it tried
to open /var/run/tinc-.pid.  Now -n. works as if there was no
-n option is specified.

Signed-Off-By: Michael Tokarev <mjt@tls.msk.ru>

diff --git a/src/tincd.c b/src/tincd.c
index a618e63..3dab9a0 100644 (file)
--- a/src/tincd.c
+++ b/src/tincd.c
@@ -221,7 +221,9 @@ static bool parse_options(int argc, char **argv) {
                                break;
 
                        case 'n':                               /* net name given */
                                break;
 
                        case 'n':                               /* net name given */

-                               netname = xstrdup(optarg);
+                               /* netname "." is special: a "top-level name" */
+                               netname = strcmp(optarg, ".") != 0 ?
+                                               xstrdup(optarg) : NULL;

                                break;
 
                        case 'o':                               /* option */
                                break;
 
                        case 'o':                               /* option */