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-.\" Copyright (C) 1994, 1995, Daniel Quinlan <quinlan@yggdrasil.com)
-.\" Copyright (C) 2002-2008, 2017, Michael Kerrisk <mtk.manpages@gmail.com>
-.\" Copyright (C) 2023, Alejandro Colomar <alx@kernel.org>
-.\"
-.\" SPDX-License-Identifier: GPL-3.0-or-later
-.\"
-.TH proc_pid_attr 5 (date) "Linux man-pages (unreleased)"
-.SH NAME
-/proc/pid/attr/ \- security-related attributes
-.SH DESCRIPTION
-.TP
-.IR /proc/ pid /attr/
-.\" https://lwn.net/Articles/28222/
-.\" From:    Stephen Smalley <sds@epoch.ncsc.mil>
-.\" To:	     LKML and others
-.\" Subject: [RFC][PATCH] Process Attribute API for Security Modules
-.\" Date:    08 Apr 2003 16:17:52 -0400
-.\"
-.\"	http://www.nsa.gov/research/_files/selinux/papers/module/x362.shtml
-.\"
-The files in this directory provide an API for security modules.
-The contents of this directory are files that can be read and written
-in order to set security-related attributes.
-This directory was added to support SELinux,
-but the intention was that the API be general enough to support
-other security modules.
-For the purpose of explanation,
-examples of how SELinux uses these files are provided below.
-.IP
-This directory is present only if the kernel was configured with
-.BR CONFIG_SECURITY .
-.TP
-.IR /proc/ pid /attr/current " (since Linux 2.6.0)"
-The contents of this file represent the current
-security attributes of the process.
-.IP
-In SELinux, this file is used to get the security context of a process.
-Prior to Linux 2.6.11, this file could not be used to set the security
-context (a write was always denied), since SELinux limited process security
-transitions to
-.BR execve (2)
-(see the description of
-.IR /proc/ pid /attr/exec ,
-below).
-Since Linux 2.6.11, SELinux lifted this restriction and began supporting
-"set" operations via writes to this node if authorized by policy,
-although use of this operation is only suitable for applications that are
-trusted to maintain any desired separation between the old and new security
-contexts.
-.IP
-Prior to Linux 2.6.28, SELinux did not allow threads within a
-multithreaded process to set their security context via this node
-as it would yield an inconsistency among the security contexts of the
-threads sharing the same memory space.
-Since Linux 2.6.28, SELinux lifted
-this restriction and began supporting "set" operations for threads within
-a multithreaded process if the new security context is bounded by the old
-security context, where the bounded relation is defined in policy and
-guarantees that the new security context has a subset of the permissions
-of the old security context.
-.IP
-Other security modules may choose to support "set" operations via
-writes to this node.
-.TP
-.IR /proc/ pid /attr/exec " (since Linux 2.6.0)"
-This file represents the attributes to assign to the
-process upon a subsequent
-.BR execve (2).
-.IP
-In SELinux,
-this is needed to support role/domain transitions, and
-.BR execve (2)
-is the preferred point to make such transitions because it offers better
-control over the initialization of the process in the new security label
-and the inheritance of state.
-In SELinux, this attribute is reset on
-.BR execve (2)
-so that the new program reverts to the default behavior for any
-.BR execve (2)
-calls that it may make.
-In SELinux, a process can set
-only its own
-.IR /proc/ pid /attr/exec
-attribute.
-.TP
-.IR /proc/ pid /attr/fscreate " (since Linux 2.6.0)"
-This file represents the attributes to assign to files
-created by subsequent calls to
-.BR open (2),
-.BR mkdir (2),
-.BR symlink (2),
-and
-.BR mknod (2)
-.IP
-SELinux employs this file to support creation of a file
-(using the aforementioned system calls)
-in a secure state,
-so that there is no risk of inappropriate access being obtained
-between the time of creation and the time that attributes are set.
-In SELinux, this attribute is reset on
-.BR execve (2),
-so that the new program reverts to the default behavior for
-any file creation calls it may make, but the attribute will persist
-across multiple file creation calls within a program unless it is
-explicitly reset.
-In SELinux, a process can set only its own
-.IR /proc/ pid /attr/fscreate
-attribute.
-.TP
-.IR /proc/ pid /attr/keycreate " (since Linux 2.6.18)"
-.\" commit 4eb582cf1fbd7b9e5f466e3718a59c957e75254e
-If a process writes a security context into this file,
-all subsequently created keys
-.RB ( add_key (2))
-will be labeled with this context.
-For further information, see the kernel source file
-.I Documentation/security/keys/core.rst
-(or file
-.\" commit b68101a1e8f0263dbc7b8375d2a7c57c6216fb76
-.I Documentation/security/keys.txt
-between Linux 3.0 and Linux 4.13, or
-.\" commit d410fa4ef99112386de5f218dd7df7b4fca910b4
-.I Documentation/keys.txt
-before Linux 3.0).
-.TP
-.IR /proc/ pid /attr/prev " (since Linux 2.6.0)"
-This file contains the security context of the process before the last
-.BR execve (2);
-that is, the previous value of
-.IR /proc/ pid /attr/current .
-.TP
-.IR /proc/ pid /attr/socketcreate " (since Linux 2.6.18)"
-.\" commit 42c3e03ef6b298813557cdb997bd6db619cd65a2
-If a process writes a security context into this file,
-all subsequently created sockets will be labeled with this context.
-.SH SEE ALSO
-.BR proc (5)