net/bluetooth/hci_sysfs.c

   1 #include <linux/config.h>
   2 #include <linux/kernel.h>
   3 #include <linux/init.h>
   4
   5 #include <net/bluetooth/bluetooth.h>
   6 #include <net/bluetooth/hci_core.h>
   7
   8 #ifndef CONFIG_BT_HCI_CORE_DEBUG
   9 #undef  BT_DBG
  10 #define BT_DBG( A... )
  11 #endif
  12
  13 static ssize_t show_name(struct class_device *cdev, char *buf)
  14 {
  15         struct hci_dev *hdev = class_get_devdata(cdev);
  16         return sprintf(buf, "%s\n", hdev->name);
  17 }
  18
  19 static ssize_t show_type(struct class_device *cdev, char *buf)
  20 {
  21         struct hci_dev *hdev = class_get_devdata(cdev);
  22         return sprintf(buf, "%d\n", hdev->type);
  23 }
  24
  25 static ssize_t show_address(struct class_device *cdev, char *buf)
  26 {
  27         struct hci_dev *hdev = class_get_devdata(cdev);
  28         bdaddr_t bdaddr;
  29         baswap(&bdaddr, &hdev->bdaddr);
  30         return sprintf(buf, "%s\n", batostr(&bdaddr));
  31 }
  32
  33 static ssize_t show_flags(struct class_device *cdev, char *buf)
  34 {
  35         struct hci_dev *hdev = class_get_devdata(cdev);
  36         return sprintf(buf, "0x%lx\n", hdev->flags);
  37 }
  38
  39 static ssize_t show_inquiry_cache(struct class_device *cdev, char *buf)
  40 {
  41         struct hci_dev *hdev = class_get_devdata(cdev);
  42         struct inquiry_cache *cache = &hdev->inq_cache;
  43         struct inquiry_entry *e;
  44         int n = 0;
  45
  46         hci_dev_lock_bh(hdev);
  47
  48         for (e = cache->list; e; e = e->next) {
  49                 struct inquiry_info *info = &e->info;
  50                 bdaddr_t bdaddr;
  51                 baswap(&bdaddr, &info->bdaddr);
  52                 n += sprintf(buf + n, "%s %d %d %d 0x%.2x%.2x%.2x 0x%.4x 0x%.2x %u\n",
  53                                 batostr(&bdaddr),
  54                                 info->pscan_rep_mode, info->pscan_period_mode, info->pscan_mode,
  55                                 info->dev_class[2], info->dev_class[1], info->dev_class[0],
  56                                 info->clock_offset, 0, e->timestamp);
  57         }
  58
  59         hci_dev_unlock_bh(hdev);
  60         return n;
  61 }
  62
  63 static CLASS_DEVICE_ATTR(name, S_IRUGO, show_name, NULL);
  64 static CLASS_DEVICE_ATTR(type, S_IRUGO, show_type, NULL);
  65 static CLASS_DEVICE_ATTR(address, S_IRUGO, show_address, NULL);
  66 static CLASS_DEVICE_ATTR(flags, S_IRUGO, show_flags, NULL);
  67 static CLASS_DEVICE_ATTR(inquiry_cache, S_IRUGO, show_inquiry_cache, NULL);
  68
  69 static struct class_device_attribute *bt_attrs[] = {
  70         &class_device_attr_name,
  71         &class_device_attr_type,
  72         &class_device_attr_address,
  73         &class_device_attr_flags,
  74         &class_device_attr_inquiry_cache,
  75         NULL
  76 };
  77
  78 #ifdef CONFIG_HOTPLUG
  79 static int bt_hotplug(struct class_device *cdev, char **envp, int num_envp, char *buf, int size)
  80 {
  81         struct hci_dev *hdev = class_get_devdata(cdev);
  82         int n, i = 0;
  83
  84         envp[i++] = buf;
  85         n = snprintf(buf, size, "INTERFACE=%s", hdev->name) + 1;
  86         buf += n;
  87         size -= n;
  88
  89         if ((size <= 0) || (i >= num_envp))
  90                 return -ENOMEM;
  91
  92         envp[i] = 0;
  93         return 0;
  94 }
  95 #endif
  96
  97 static void bt_release(struct class_device *cdev)
  98 {
  99         struct hci_dev *hdev = class_get_devdata(cdev);
 100
 101         kfree(hdev);
 102 }
 103
 104 static struct class bt_class = {
 105         .name           = "bluetooth",
 106         .release        = bt_release,
 107 #ifdef CONFIG_HOTPLUG
 108         .hotplug        = bt_hotplug,
 109 #endif
 110 };
 111
 112 int hci_register_sysfs(struct hci_dev *hdev)
 113 {
 114         struct class_device *cdev = &hdev->class_dev;
 115         int i, err;
 116
 117         BT_DBG("%p name %s type %d", hdev, hdev->name, hdev->type);
 118
 119         cdev->class = &bt_class;
 120         class_set_devdata(cdev, hdev);
 121
 122         strlcpy(cdev->class_id, hdev->name, BUS_ID_SIZE);
 123         err = class_device_register(cdev);
 124         if (err < 0)
 125                 return err;
 126
 127         for (i = 0; bt_attrs[i]; i++)
 128                 class_device_create_file(cdev, bt_attrs[i]);
 129
 130         return 0;
 131 }
 132
 133 void hci_unregister_sysfs(struct hci_dev *hdev)
 134 {
 135         struct class_device * cdev = &hdev->class_dev;
 136
 137         BT_DBG("%p name %s type %d", hdev, hdev->name, hdev->type);
 138
 139         class_device_del(cdev);
 140 }
 141
 142 int __init bt_sysfs_init(void)
 143 {
 144         return class_register(&bt_class);
 145 }
 146
 147 void __exit bt_sysfs_cleanup(void)
 148 {
 149         class_unregister(&bt_class);
 150 }