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-.\" Copyright (c) 2019 by Michael Kerrisk <mtk.manpages@gmail.com>
-.\"
-.\" SPDX-License-Identifier: Linux-man-pages-copyleft
-.\"
-.\"
-.TH ipc_namespaces 7 2023-10-31 "Linux man-pages 6.7"
-.SH NAME
-ipc_namespaces \- overview of Linux IPC namespaces
-.SH DESCRIPTION
-IPC namespaces isolate certain IPC resources,
-namely, System V IPC objects (see
-.BR sysvipc (7))
-and (since Linux 2.6.30)
-.\" commit 7eafd7c74c3f2e67c27621b987b28397110d643f
-.\" https://lwn.net/Articles/312232/
-POSIX message queues (see
-.BR mq_overview (7)).
-The common characteristic of these IPC mechanisms is that IPC
-objects are identified by mechanisms other than filesystem
-pathnames.
-.P
-Each IPC namespace has its own set of System V IPC identifiers and
-its own POSIX message queue filesystem.
-Objects created in an IPC namespace are visible to all other processes
-that are members of that namespace,
-but are not visible to processes in other IPC namespaces.
-.P
-The following
-.I /proc
-interfaces are distinct in each IPC namespace:
-.IP \[bu] 3
-The POSIX message queue interfaces in
-.IR /proc/sys/fs/mqueue .
-.IP \[bu]
-The System V IPC interfaces in
-.IR /proc/sys/kernel ,
-namely:
-.IR msgmax ,
-.IR msgmnb ,
-.IR msgmni ,
-.IR sem ,
-.IR shmall ,
-.IR shmmax ,
-.IR shmmni ,
-and
-.IR shm_rmid_forced .
-.IP \[bu]
-The System V IPC interfaces in
-.IR /proc/sysvipc .
-.P
-When an IPC namespace is destroyed
-(i.e., when the last process that is a member of the namespace terminates),
-all IPC objects in the namespace are automatically destroyed.
-.P
-Use of IPC namespaces requires a kernel that is configured with the
-.B CONFIG_IPC_NS
-option.
-.SH SEE ALSO
-.BR nsenter (1),
-.BR unshare (1),
-.BR clone (2),
-.BR setns (2),
-.BR unshare (2),
-.BR mq_overview (7),
-.BR namespaces (7),
-.BR sysvipc (7)