ULOS Manual Pages - sysfs(5) | Back

NAME
  sysfs - a pseudo-filesystem containing certain runtime kernel data

DESCRIPTION
  The sysfs filesystem (mounted at /sys) is a pseudo-filesystem which contains certain volatile kernel data.  It is a combination of Linux's /proc, /sys, and /dev rolled into one (with /proc at /sys/proc and /dev at /sys/dev).  There is also /sys/components, which contains certain component access points.

PROCESSES
  Public process data can be accessed through /sys/proc/PID (for example, init's process data can be accessed under /sys/proc/1).  This process data consists of the following files:

    cputime    CPU time consumed by the process.  Somewhat inaccurate.
    deadline   The process-specific resume deadline.
    name       The process name.
    owner      UID of the process's owner.
    status     Process status (usually waiting when read by another process).
    stopped    Whether the process has been stopped through the STOP signal.
    threads    The number of threads belonging to the process.
    waiting    Whether the process is waiting for something.
    handles/   Directory containing all the process's handles.

DEVICES
  Virtual devices (mostly I/O streams) are accessible in /sys/dev.  It is on the ttyN devices that Refinement spawns each initial login process.

COMPONENTS
  A basic component interface is accessible under /sys/components.  Components are further filtered into by-address and by-type categories.  From by-type, the third GPU detected by the system is accessible under /gpu/3.  If that GPU's address is 425fae, then it is also accessible under by-address/425fa3.

  Each component node will contain at least the address, slot, and type fields, corresponding to the relevant component API calls.  If the component is explicitly supported by the kernel driver, there may be additional files corresponding to certain component calls for that component.

FILESYSTEMS
  Filesystem mount information can be obtained through reading /sys/mounts.

COPYRIGHT
  Cynosure kernel copyright (c) 2021 Ocawesome101 under the DSLv2.

REPORTING BUGS
  Bugs should be reported at https://github.com/ocawesome101/oc-cynosure/issues.