Make kdmctl reliable

Backport of KDE4 SVN revision 1196803


git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/kdebase@1247445 283d02a7-25f6-0310-bc7c-ecb5cbfe19da

kdm/kfrontend/kdmctl.c

@@ -93,15 +93,13 @@ exe( int fd, const char *in, int len )
 		fprintf( stderr, "Cannot send command\n" );
 		return 1;
 	}
+	do {
 		if ((len = read(fd, buf, sizeof(buf))) <= 0) {
 			fprintf(stderr, "Cannot receive reply\n");
 			return 1;
 		}
-	if (len == sizeof(buf) && buf[sizeof(buf) - 1] != '\n')
-		fprintf( stderr, "Warning: reply is too long\n" );
 		fwrite(buf, 1, len, stdout);
-	if (len == sizeof(buf) && buf[sizeof(buf) - 1] != '\n')
-		puts( "[...]" );
+	} while (buf[len - 1] != '\n');
 	return 0;
 }