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      1 /* ----------------------------------------------------------------------- *
      2  *
      3  *   Copyright 2004-2008 H. Peter Anvin - All Rights Reserved
      4  *
      5  *   Permission is hereby granted, free of charge, to any person
      6  *   obtaining a copy of this software and associated documentation
      7  *   files (the "Software"), to deal in the Software without
      8  *   restriction, including without limitation the rights to use,
      9  *   copy, modify, merge, publish, distribute, sublicense, and/or
     10  *   sell copies of the Software, and to permit persons to whom
     11  *   the Software is furnished to do so, subject to the following
     12  *   conditions:
     13  *
     14  *   The above copyright notice and this permission notice shall
     15  *   be included in all copies or substantial portions of the Software.
     16  *
     17  *   THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
     18  *   EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
     19  *   OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
     20  *   NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
     21  *   HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
     22  *   WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
     23  *   FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
     24  *   OTHER DEALINGS IN THE SOFTWARE.
     25  *
     26  * ----------------------------------------------------------------------- */
     27 
     28 /*
     29  * rawcon_write.c
     30  *
     31  * Raw writing to the console; no \n -> \r\n translation
     32  */
     33 
     34 #include <errno.h>
     35 #include <string.h>
     36 #include <com32.h>
     37 #include <core.h>
     38 #include <minmax.h>
     39 #include "file.h"
     40 
     41 static ssize_t __rawcon_write(struct file_info *fp, const void *buf,
     42 			      size_t count)
     43 {
     44     const char *bufp = buf;
     45     size_t n = 0;
     46 
     47     (void)fp;
     48 
     49     while (count--) {
     50 	writechr(*bufp++);
     51 	n++;
     52     }
     53 
     54     return n;
     55 }
     56 
     57 const struct output_dev dev_rawcon_w = {
     58     .dev_magic = __DEV_MAGIC,
     59     .flags = __DEV_TTY | __DEV_OUTPUT,
     60     .fileflags = O_WRONLY | O_CREAT | O_TRUNC | O_APPEND,
     61     .write = __rawcon_write,
     62     .close = NULL,
     63 };
     64