#top sysfs¶

#top The filesystem for exporting kernel objects¶

• sys/block/ all known block devices such as hda/ ram/ sda/
• sys/bus/ all registered buses. Each directory below bus/ holds by default two subdirectories:
  • device/ for all devices attached to that bus
  • driver/ for all drivers assigned with that bus.
• sys/class/ for each device type there is a subdirectory: for example /printer or /sound
• sys/device/ all devices known by the kernel, organised by the bus they are connected to
• sys/firmware/ files in this directory handle the firmware of some hardware devices
• sys/fs/ files to control a file system, currently used by FUSE, a user space file system implementation
• sys/kernel/ holds directories (mount points) for other filesystems such as debugfs, securityfs.
• sys/module/ each kernel module loaded is represented with a directory.
• sys/power/ files to handle the power state of some hardware