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  1. /*
  2.  * Copyright (c) 2008 Jiri Svoboda
  3.  * All rights reserved.
  4.  *
  5.  * Redistribution and use in source and binary forms, with or without
  6.  * modification, are permitted provided that the following conditions
  7.  * are met:
  8.  *
  9.  * - Redistributions of source code must retain the above copyright
  10.  *   notice, this list of conditions and the following disclaimer.
  11.  * - Redistributions in binary form must reproduce the above copyright
  12.  *   notice, this list of conditions and the following disclaimer in the
  13.  *   documentation and/or other materials provided with the distribution.
  14.  * - The name of the author may not be used to endorse or promote products
  15.  *   derived from this software without specific prior written permission.
  16.  *
  17.  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  18.  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  19.  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  20.  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  21.  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  22.  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  23.  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  24.  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  25.  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  26.  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  27.  */
  28.  
  29. /** @addtogroup iramfs
  30.  * @brief   Loads inlined data onto tmpfs.
  31.  * @{
  32.  */
  33. /**
  34.  * @file
  35.  */
  36.  
  37. #include <stdio.h>
  38. #include <fcntl.h>
  39. #include <unistd.h>
  40. #include <vfs/vfs.h>
  41. #include <sys/types.h>
  42. #include "data.h"
  43.  
  44. #define min(a,b) ((a)>(b) ? (b) : (a))
  45. int main(int argc, char *argv[])
  46. {
  47.     int fd;
  48.     int cnt;
  49.     int rc;
  50.     int nbytes;
  51.     uint8_t *dp;
  52.     int written;
  53.  
  54.     printf("This is iramfs\n");
  55.     do {
  56.         rc = mount("tmpfs", "/", "nulldev0");
  57.         printf("mount tmpfs on / -> %d\n", rc);
  58.         if (rc == 0) break;
  59.  
  60.         usleep(1000 * 1000);
  61.     } while (1);
  62.    
  63.  
  64.     fd = open(data_filename, O_CREAT);
  65.     if (fd < 0) { printf("open failed\n"); return 1; }
  66.  
  67.     printf("write %d bytes...\n", data_size);
  68.     nbytes = data_size; dp = data; written = 0;
  69.     while (nbytes > 0) {
  70.         cnt = write(fd, dp, min(4096, nbytes));
  71.         if (cnt < 0) { printf("write failed\n"); return 1; }
  72.         dp += cnt;
  73.         written += cnt;
  74.         nbytes -= cnt;
  75.         printf("written: %d, cnt: %d, left: %d\n", written, cnt, nbytes);
  76.     }
  77.  
  78.     printf("\n\nwritten %d bytes\n", written);
  79.     close(fd);
  80.  
  81.     printf("done\n");
  82.     getchar();
  83.     return 0;
  84. }
  85.  
  86. /** @}
  87.  */
  88.