Added user space program to loop reading hello device.

diff --git a/usr.c b/usr.c
new file mode 100644 (file)
index 0000000..0829125
--- /dev/null
+++ b/usr.c
@@ -0,0 +1,37 @@
+/*
+ *  Copyright (C) 2010  Thadeu Lima de Souza Cascardo <cascardo@holoscopio.com>
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License along
+ *  with this program; if not, write to the Free Software Foundation, Inc.,
+ *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+
+#include <fcntl.h>
+#include <unistd.h>
+
+int main(void)
+{
+       int fd;
+       char buffer[16];
+       int r;
+       fd = open("/dev/hello", O_RDONLY);
+       if (fd < 0)
+               return 1;
+       while (1) {
+               lseek(fd, 0, SEEK_SET);
+               r = read(fd, buffer, sizeof(buffer));
+               write(1, buffer, r);
+       }
+       return 0;
+}