linux/security/tomoyo/group.c

// SPDX-License-Identifier: GPL-2.0
/*
 * security/tomoyo/group.c
 *
 * Copyright (C) 2005-2011  NTT DATA CORPORATION
 */

#include <linux/slab.h>
#include <linux/rculist.h>

#include "common.h"

/**
 * tomoyo_same_path_group - Check for duplicated "struct tomoyo_path_group" entry.
 *
 * @a: Pointer to "struct tomoyo_acl_head".
 * @b: Pointer to "struct tomoyo_acl_head".
 *
 * Returns true if @a == @b, false otherwise.
 */
static bool tomoyo_same_path_group(const struct tomoyo_acl_head *a,
				   const struct tomoyo_acl_head *b)
{ … }

/**
 * tomoyo_same_number_group - Check for duplicated "struct tomoyo_number_group" entry.
 *
 * @a: Pointer to "struct tomoyo_acl_head".
 * @b: Pointer to "struct tomoyo_acl_head".
 *
 * Returns true if @a == @b, false otherwise.
 */
static bool tomoyo_same_number_group(const struct tomoyo_acl_head *a,
				     const struct tomoyo_acl_head *b)
{ … }

/**
 * tomoyo_same_address_group - Check for duplicated "struct tomoyo_address_group" entry.
 *
 * @a: Pointer to "struct tomoyo_acl_head".
 * @b: Pointer to "struct tomoyo_acl_head".
 *
 * Returns true if @a == @b, false otherwise.
 */
static bool tomoyo_same_address_group(const struct tomoyo_acl_head *a,
				      const struct tomoyo_acl_head *b)
{ … }

/**
 * tomoyo_write_group - Write "struct tomoyo_path_group"/"struct tomoyo_number_group"/"struct tomoyo_address_group" list.
 *
 * @param: Pointer to "struct tomoyo_acl_param".
 * @type:  Type of this group.
 *
 * Returns 0 on success, negative value otherwise.
 */
int tomoyo_write_group(struct tomoyo_acl_param *param, const u8 type)
{ … }

/**
 * tomoyo_path_matches_group - Check whether the given pathname matches members of the given pathname group.
 *
 * @pathname: The name of pathname.
 * @group:    Pointer to "struct tomoyo_path_group".
 *
 * Returns matched member's pathname if @pathname matches pathnames in @group,
 * NULL otherwise.
 *
 * Caller holds tomoyo_read_lock().
 */
const struct tomoyo_path_info *
tomoyo_path_matches_group(const struct tomoyo_path_info *pathname,
			  const struct tomoyo_group *group)
{ … }

/**
 * tomoyo_number_matches_group - Check whether the given number matches members of the given number group.
 *
 * @min:   Min number.
 * @max:   Max number.
 * @group: Pointer to "struct tomoyo_number_group".
 *
 * Returns true if @min and @max partially overlaps @group, false otherwise.
 *
 * Caller holds tomoyo_read_lock().
 */
bool tomoyo_number_matches_group(const unsigned long min,
				 const unsigned long max,
				 const struct tomoyo_group *group)
{ … }

/**
 * tomoyo_address_matches_group - Check whether the given address matches members of the given address group.
 *
 * @is_ipv6: True if @address is an IPv6 address.
 * @address: An IPv4 or IPv6 address.
 * @group:   Pointer to "struct tomoyo_address_group".
 *
 * Returns true if @address matches addresses in @group group, false otherwise.
 *
 * Caller holds tomoyo_read_lock().
 */
bool tomoyo_address_matches_group(const bool is_ipv6, const __be32 *address,
				  const struct tomoyo_group *group)
{ … }