OBJFS(4FS) File Systems OBJFS(4FS)

NAME

objfs - Kernel object filesystem

DESCRIPTION

The objfs filesystem describes the state of all modules currently loaded by
the kernel. It is mounted during boot at /system/object.

The contents of the filesystem are dynamic and reflect the current state of
the system. Each module is represented by a directory containing a single
file, `object''. The object file is a read only ELF file which contains
information about the object loaded in the kernel.

The kernel may load and unload modules dynamically as the system runs. As
a result, applications may observe different directory contents in
/system/object if they repeatedly rescan the directory. If a module is
unloaded, its associated /system/object files disappear from the hierarchy
and subsequent attempts to open them, or to read files opened before the
module unloaded, elicits an error.

This file system is generally not present in a non-global zone.

FILES

/system/object Mount point for objfs file system in the
global zone.

Interface Stability
Private

SEE ALSO

vfstab(5)

NOTES

The content of the ELF files is private to the implementation and subject
to change without notice.

illumos November 29, 2021 illumos