src/install+setup/install/ide.c

   1 /* SmoothWall install program.
   2  *
   3  * This program is distributed under the terms of the GNU General Public
   4  * Licence.  See the file COPYING for details.
   5  *
   6  * (c) Lawrence Manning, 2001
   7  * Contains some functs for scanning /proc for ide info on CDROMS and
   8  * harddisks.
   9  *
  10  * $Id: ide.c,v 1.4 2003/12/11 11:25:53 riddles Exp $
  11  *
  12  */
  13
  14 #include "install.h"
  15
  16 /* checkide().  Scans the named drive letter and returns the IDE_??? type. */
  17 int checkide(char letter)
  18 {
  19         FILE *f = NULL;
  20         char filename[STRING_SIZE];
  21         char buffer[STRING_SIZE];
  22
  23         sprintf(filename, "/proc/ide/hd%c/media", letter);
  24
  25         if (!(f = fopen(filename, "r")))
  26                 return IDE_EMPTY;
  27
  28         if (!(fgets(buffer, STRING_SIZE, f)))
  29         {
  30                 printf("Couldn't read from %s\n", filename);
  31                 fclose(f);
  32                 return IDE_EMPTY;
  33         }
  34
  35         fclose(f);
  36
  37         stripnl(buffer);
  38
  39         if (strcmp(buffer, "cdrom") == 0)
  40                 return IDE_CDROM;
  41         else if (strcmp(buffer, "disk") == 0)
  42                 return IDE_HD;
  43         else
  44                 return IDE_UNKNOWN;
  45 }
  46
  47 /* findidetype().  Finds the first ide deveice of the given IDE_?? type. */
  48 char findidetype(int type)
  49 {
  50         char letter;
  51
  52         for (letter = 'a'; letter <= 'z'; letter++)
  53         {
  54                 if ((checkide(letter)) == type)
  55                 {
  56                         return letter;
  57                 }
  58         }
  59         return '\0';
  60 }
  61