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Reading sysfs devices in Linux

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This code will print out all sysfs devices under a certain device class (which is supplied as a parameter).

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  1. #include <sysfs/libsysfs.h>
  2. #include <stdio.h>
  3.  
  4. /**
  5.  * @brief Lists all the devices in the given class.
  6.  *
  7.  * @param className Name of the class (in /sys/class).
  8.  */
  9. void sysFsListDevices(char *className)
  10. {
  11.         struct sysfs_class *class;
  12.         struct dlist *devices;
  13.         struct sysfs_class_device *class_device;
  14.         struct sysfs_device *device;
  15.  
  16.         class = sysfs_open_class(className);
  17.  
  18.         devices = sysfs_get_class_devices(class);
  19.  
  20.         dlist_for_each(devices) {
  21.                 class_device =
  22.                     (struct sysfs_class_device *)devices->marker->data;
  23.                 printf("Class - Name: %s, classname: %s, path: %s\n",
  24.                        class_device->name, class_device->classname,
  25.                        class_device->path);
  26.  
  27.                 device = sysfs_get_classdev_device(class_device);
  28.  
  29.                 printf
  30.                     ("Device - Name: %s, bus_id: %s, bus: %s, driver_name: %s, path: %s\n\n",
  31.                      device->name, device->bus_id, device->bus,
  32.                      device->driver_name, device->path);
  33.  
  34.         }
  35.  
  36. 	return;
  37. }

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