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