plugins/formfactor.c

   1 /*
   2  *
   3  *  BlueZ - Bluetooth protocol stack for Linux
   4  *
   5  *  Copyright (C) 2004-2010  Marcel Holtmann <marcel@holtmann.org>
   6  *
   7  *
   8  *  This program is free software; you can redistribute it and/or modify
   9  *  it under the terms of the GNU General Public License as published by
  10  *  the Free Software Foundation; either version 2 of the License, or
  11  *  (at your option) any later version.
  12  *
  13  *  This program is distributed in the hope that it will be useful,
  14  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  *  GNU General Public License for more details.
  17  *
  18  *  You should have received a copy of the GNU General Public License
  19  *  along with this program; if not, write to the Free Software
  20  *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  21  *
  22  */
  23
  24 #ifdef HAVE_CONFIG_H
  25 #include <config.h>
  26 #endif
  27
  28 #include <stdlib.h>
  29 #include <errno.h>
  30
  31 #include <bluetooth/bluetooth.h>
  32
  33 #include "plugin.h"
  34 #include "adapter.h"
  35 #include "log.h"
  36
  37 #define DMI_CHASSIS_FILE "/sys/class/dmi/id/chassis_type"
  38 #define DMI_CHASSIS_FILE_FALLBACK "/sys/devices/virtual/dmi/id/chassis_type"
  39
  40 /* Map the chassis type from chassis_type to a sensible type used in hal
  41  *
  42  * See also 3.3.4.1 of the "System Management BIOS Reference Specification,
  43  * Version 2.6.1" (Preliminary Standard) document, available from
  44  * http://www.dmtf.org/standards/smbios.
  45  *
  46  * TODO: figure out WTF the mapping should be; "Lunch Box"? Give me a break :-)
  47  *
  48  * Copied from hal/hald/linux/osspec.c
  49  */
  50 static const char *chassis_map[] = {
  51         "Other",                 "unknown", /* 0x01 */
  52         "Unknown",               "unknown",
  53         "Desktop",               "desktop",
  54         "Low Profile Desktop",   "desktop",
  55         "Pizza Box",             "server",
  56         "Mini Tower",            "desktop",
  57         "Tower",                 "desktop",
  58         "Portable",              "laptop",
  59         "Laptop",                "laptop",
  60         "Notebook",              "laptop",
  61         "Hand Held",             "handheld",
  62         "Docking Station",       "laptop",
  63         "All In One",            "unknown",
  64         "Sub Notebook",          "laptop",
  65         "Space-saving",          "desktop",
  66         "Lunch Box",             "unknown",
  67         "Main Server Chassis",   "server",
  68         "Expansion Chassis",     "unknown",
  69         "Sub Chassis",           "unknown",
  70         "Bus Expansion Chassis", "unknown",
  71         "Peripheral Chassis",    "unknown",
  72         "RAID Chassis",          "unknown",
  73         "Rack Mount Chassis",    "unknown",
  74         "Sealed-case PC",        "unknown",
  75         "Multi-system",          "unknown",
  76         "CompactPCI",            "unknown",
  77         "AdvancedTCA",           "unknown",
  78         "Blade",                 "server",
  79         "Blade Enclosure",       "unknown", /* 0x1D */
  80         NULL
  81 };
  82
  83 static int formfactor_probe(struct btd_adapter *adapter)
  84 {
  85         int chassis_type;
  86         uint8_t minor = 0;
  87         const char *formfactor;
  88         char *contents;
  89
  90         if (g_file_get_contents(DMI_CHASSIS_FILE,
  91                                 &contents, NULL, NULL) == FALSE) {
  92                 if (g_file_get_contents(DMI_CHASSIS_FILE_FALLBACK,
  93                                         &contents, NULL, NULL) == FALSE) {
  94                         error("Could not get the contents of DMI chassis type");
  95                         return 0;
  96                 }
  97         }
  98
  99         chassis_type = atoi(contents);
 100         g_free (contents);
 101
 102         if (chassis_type > 0x1D || chassis_type <= 0) {
 103                 error ("Chassis type is not a known chassis type");
 104                 return 0;
 105         }
 106
 107         formfactor = chassis_map[chassis_type * 2 - 1];
 108         if (formfactor != NULL) {
 109                 if (g_str_equal(formfactor, "laptop") == TRUE)
 110                         minor |= (1 << 2) | (1 << 3);
 111                 else if (g_str_equal(formfactor, "desktop") == TRUE)
 112                         minor |= 1 << 2;
 113                 else if (g_str_equal(formfactor, "server") == TRUE)
 114                         minor |= 1 << 3;
 115                 else if (g_str_equal(formfactor, "handheld") == TRUE)
 116                         minor += 1 << 4;
 117         }
 118
 119         /* Computer major class */
 120         DBG("Setting 0x%06x for major/minor device class", (1 << 8) | minor);
 121
 122         btd_adapter_set_class(adapter, 0x01, minor);
 123
 124         return 0;
 125 }
 126
 127 static void formfactor_remove(struct btd_adapter *adapter)
 128 {
 129 }
 130
 131 static struct btd_adapter_driver formfactor_driver = {
 132         .name   = "formfactor",
 133         .probe  = formfactor_probe,
 134         .remove = formfactor_remove,
 135 };
 136
 137 static int formfactor_init(void)
 138 {
 139         return btd_register_adapter_driver(&formfactor_driver);
 140 }
 141
 142 static void formfactor_exit(void)
 143 {
 144         btd_unregister_adapter_driver(&formfactor_driver);
 145 }
 146
 147 BLUETOOTH_PLUGIN_DEFINE(formfactor, VERSION,
 148                 BLUETOOTH_PLUGIN_PRIORITY_LOW, formfactor_init, formfactor_exit)