linux/security/apparmor/procattr.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 * AppArmor security module
 *
 * This file contains AppArmor /proc/<pid>/attr/ interface functions
 *
 * Copyright (C) 1998-2008 Novell/SUSE
 * Copyright 2009-2010 Canonical Ltd.
 */

#include "include/apparmor.h"
#include "include/cred.h"
#include "include/policy.h"
#include "include/policy_ns.h"
#include "include/domain.h"
#include "include/procattr.h"


/**
 * aa_getprocattr - Return the label information for @label
 * @label: the label to print label info about  (NOT NULL)
 * @string: Returns - string containing the label info (NOT NULL)
 * @newline: indicates that a newline should be added
 *
 * Requires: label != NULL && string != NULL
 *
 * Creates a string containing the label information for @label.
 *
 * Returns: size of string placed in @string else error code on failure
 */
int aa_getprocattr(struct aa_label *label, char **string, bool newline)
{ … }

/**
 * split_token_from_name - separate a string of form  <token>^<name>
 * @op: operation being checked
 * @args: string to parse  (NOT NULL)
 * @token: stores returned parsed token value  (NOT NULL)
 *
 * Returns: start position of name after token else NULL on failure
 */
static char *split_token_from_name(const char *op, char *args, u64 *token)
{ … }

/**
 * aa_setprocattr_changehat - handle procattr interface to change_hat
 * @args: args received from writing to /proc/<pid>/attr/current (NOT NULL)
 * @size: size of the args
 * @flags: set of flags governing behavior
 *
 * Returns: %0 or error code if change_hat fails
 */
int aa_setprocattr_changehat(char *args, size_t size, int flags)
{ … }