src/install+setup/install/usb.c

   1 /*
   2  * This file is part of the IPCop Firewall.
   3  *
   4  * IPCop is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation; either version 2 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * IPCop is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with IPCop; if not, write to the Free Software
  16  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  17  *
  18  * Copyright 2002: Mark Wormgoor <mark@wormgoor.com>
  19  *
  20  * $Id: usb.c,v 1.9.2.8 2005/12/10 00:18:23 franck78 Exp $
  21  *
  22  */
  23
  24 #include "install.h"
  25
  26 int usbuhci = 0;
  27 int usbohci = 0;
  28 int ehcihcd = 0;
  29
  30 int initialize_usb() {
  31     modprobe("sd_mod");
  32     modprobe("sr_mod");
  33     modprobe("usb-storage");
  34
  35     if (ehcihcd) {
  36         rmmod("ehci-hcd");
  37         ehcihcd = 0;
  38     }
  39     if (usbohci) {
  40         rmmod("usb-ohci");
  41         usbohci = 0;
  42     }
  43     if (usbuhci) {
  44         rmmod("usb-uhci");
  45         usbuhci = 0;
  46     }
  47
  48     if (modprobe("ehci-hcd") == 0) ehcihcd = 1;
  49     if (modprobe("usb-ohci") == 0) usbohci = 1;
  50     if (modprobe("usb-uhci") == 0) usbuhci = 1;
  51
  52     modprobe("hid");
  53     modprobe("keybdev");
  54     return 0;
  55 }
  56
  57 int write_usb_modules_conf() {
  58     int index = 0;
  59     FILE *handle;
  60
  61     if (!(handle = fopen("/harddisk/etc/modules.conf", "a")))
  62         return 0;
  63
  64 #if 0 /* we don't do this yet, because one of the drivers has a problem
  65        * with it */
  66     if (ehcihcd) {
  67         fprintf(handle,"alias usb-controller");
  68         if (index)
  69                 fprintf(handle,"%d",index);
  70         fprintf(handle," ehci-hcd\n");
  71         index++;
  72     }
  73 #endif
  74
  75     if (usbohci) {
  76         fprintf(handle,"alias usb-controller");
  77         if (index)
  78                 fprintf(handle,"%d",index);
  79         fprintf(handle," usb-ohci\n");
  80         index++;
  81     }
  82
  83     if (usbuhci) {
  84         fprintf(handle,"alias usb-controller");
  85         if (index)
  86                 fprintf(handle,"%d",index);
  87         fprintf(handle," usb-uhci\n");
  88         index++;
  89     }
  90     fclose(handle);
  91
  92     return 0;
  93 }
  94
  95 /* checkusb().
  96     Scans the named partitions and returns true if USB-removable.
  97     a bug? in "cat /proc/partitions" with superfloppy scheme device
  98     make them appearing always with four 'false' partitions:
  99     sda and sda1 sda2 sda3 sda4.
 100     No easy way to decide if /dev/sda1 exists or not.
 101 */
 102 int checkusb(char *partition)
 103 {
 104         FILE *f = NULL;
 105         char filename[STRING_SIZE];
 106         char buffer[STRING_SIZE];
 107         char *pchar = &buffer[0];
 108         if (!(f = fopen("/proc/partitions", "r")))
 109                 return 0;
 110
 111         short int major = 0, minor = 0;
 112         while (fgets(buffer, STRING_SIZE, f))   {
 113             /* look for partition*/
 114             if (strstr (buffer, partition)) {
 115                 major = atoi (buffer);
 116                 if (major != 8) break ; /* not scsi */
 117                 //get minor
 118                 while (*pchar != '8') pchar++;
 119                 minor = atoi (++pchar);
 120                 break;
 121             }
 122         }
 123         fclose(f);
 124         if (major != 8) return 0; /* nothing found */
 125
 126         //now check for usb-storage-MINOR
 127         minor >>= 4; // get index from minor
 128         sprintf (filename, "/proc/scsi/usb-storage-%d/%d", minor,minor);
 129
 130         if (!(f = fopen(filename, "r")))
 131                 return 0;
 132         int count = 0;
 133         while (fgets(buffer, STRING_SIZE, f))   {
 134             if (strstr(buffer,"usb-storage")) count++;
 135             if (strstr(buffer,"SCSI")) count++;
 136             if (strstr(buffer,"Attached: Yes")) count++;
 137         }
 138         fclose(f);
 139
 140         return (count==3 ? 1 : 0);
 141 }