.\" .\" Copyright (c) 2004, Sun Microsystems, Inc. All Rights Reserved .\" Copyright 2021 Oxide Computer Company .\" .\" The contents of this file are subject to the terms of the .\" Common Development and Distribution License (the "License"). .\" You may not use this file except in compliance with the License. .\" .\" You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE .\" or http://www.opensolaris.org/os/licensing. .\" See the License for the specific language governing permissions .\" and limitations under the License. .\" .\" When distributing Covered Code, include this CDDL HEADER in each .\" file and include the License file at usr/src/OPENSOLARIS.LICENSE. .\" If applicable, add the following below this CDDL HEADER, with the .\" fields enclosed by brackets "[]" replaced with your own identifying .\" information: Portions Copyright [yyyy] [name of copyright owner] .\" .Dd November 29, 2021 .Dt OBJFS 4FS .Os .Sh NAME .Nm objfs .Nd Kernel object filesystem .Sh DESCRIPTION The .Nm filesystem describes the state of all modules currently loaded by the kernel. It is mounted during boot at .Pa /system/object . .Pp 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, .Sq object' . The object file is a read only ELF file which contains information about the object loaded in the kernel. .Pp The kernel may load and unload modules dynamically as the system runs. As a result, applications may observe different directory contents in .Pa /system/object if they repeatedly rescan the directory. If a module is unloaded, its associated .Pa /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. .Pp This file system is generally not present in a non-global zone. .Sh FILES .Bl -tag -width Pa .It Pa /system/object Mount point for objfs file system in the global zone. .El .Sh Interface Stability .Sy Private .Sh SEE ALSO .Xr vfstab 5 .Sh NOTES The content of the ELF files is private to the implementation and subject to change without notice.