1 /* 2 * Test a Vcon interface. 3 * 4 * Copyright (C) 2018 Paul Boddie <paul@boddie.org.uk> 5 * 6 * This program is free software; you can redistribute it and/or 7 * modify it under the terms of the GNU General Public License as 8 * published by the Free Software Foundation; either version 2 of 9 * the License, or (at your option) any later version. 10 * 11 * This program is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 * GNU General Public License for more details. 15 * 16 * You should have received a copy of the GNU General Public License 17 * along with this program; if not, write to the Free Software 18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, 19 * Boston, MA 02110-1301, USA 20 */ 21 22 #include <l4/re/env> 23 #include <l4/sys/vcon> 24 #include <l4/util/util.h> 25 26 #include <string.h> 27 28 static const char *buffer = "Hello world!"; 29 30 int main(int argc, char *argv[]) 31 { 32 const char *cap = argc < 2 ? "term" : argv[1]; 33 34 /* Obtain a reference to the virtual console. */ 35 36 L4::Cap<L4::Vcon> vcon = L4Re::Env::env()->get_cap<L4::Vcon>(cap); 37 if (!vcon.is_valid()) return 1; 38 39 while (1) 40 { 41 vcon->write(buffer, strlen(buffer)); 42 l4_sleep(1000); 43 } 44 45 return 0; 46 }