1c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen/* 2c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen * AppArmor security module 3c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen * 4c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen * This file contains AppArmor policy definitions. 5c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen * 6c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen * Copyright (C) 1998-2008 Novell/SUSE 7c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen * Copyright 2009-2010 Canonical Ltd. 8c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen * 9c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen * This program is free software; you can redistribute it and/or 10c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen * modify it under the terms of the GNU General Public License as 11c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen * published by the Free Software Foundation, version 2 of the 12c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen * License. 13c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen */ 14c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen 15c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen#ifndef __AA_POLICY_H 16c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen#define __AA_POLICY_H 17c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen 18c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen#include <linux/capability.h> 19c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen#include <linux/cred.h> 20c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen#include <linux/kref.h> 21c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen#include <linux/sched.h> 22c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen#include <linux/slab.h> 23c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen#include <linux/socket.h> 24c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen 25c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen#include "apparmor.h" 26c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen#include "audit.h" 27c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen#include "capability.h" 28c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen#include "domain.h" 29c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen#include "file.h" 30c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen#include "resource.h" 31c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen 320d259f043f5f60f74c4fd020aac190cb6450e918John Johansenextern const char *const aa_profile_mode_names[]; 330d259f043f5f60f74c4fd020aac190cb6450e918John Johansen#define APPARMOR_MODE_NAMES_MAX_INDEX 4 34c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen 3550c5ecd5d8ffb0e549676b8fd9781e3b2fd751a0John Johansen#define PROFILE_MODE(_profile, _mode) \ 3650c5ecd5d8ffb0e549676b8fd9781e3b2fd751a0John Johansen ((aa_g_profile_mode == (_mode)) || \ 3750c5ecd5d8ffb0e549676b8fd9781e3b2fd751a0John Johansen ((_profile)->mode == (_mode))) 38c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen 3950c5ecd5d8ffb0e549676b8fd9781e3b2fd751a0John Johansen#define COMPLAIN_MODE(_profile) PROFILE_MODE((_profile), APPARMOR_COMPLAIN) 4050c5ecd5d8ffb0e549676b8fd9781e3b2fd751a0John Johansen 4150c5ecd5d8ffb0e549676b8fd9781e3b2fd751a0John Johansen#define KILL_MODE(_profile) PROFILE_MODE((_profile), APPARMOR_KILL) 42c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen 43c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen#define PROFILE_IS_HAT(_profile) ((_profile)->flags & PFLAG_HAT) 44c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen 4577b071b34045a0c65d0e1f85f3d47fd2b8b7a8a1John Johansen#define PROFILE_INVALID(_profile) ((_profile)->flags & PFLAG_INVALID) 4677b071b34045a0c65d0e1f85f3d47fd2b8b7a8a1John Johansen 4701e2b670aa898a39259bc85c78e3d74820f4d3b6John Johansen#define on_list_rcu(X) (!list_empty(X) && (X)->prev != LIST_POISON2) 4801e2b670aa898a39259bc85c78e3d74820f4d3b6John Johansen 49c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen/* 50c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen * FIXME: currently need a clean way to replace and remove profiles as a 51c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen * set. It should be done at the namespace level. 52c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen * Either, with a set of profiles loaded at the namespace level or via 53c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen * a mark and remove marked interface. 54c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen */ 55c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansenenum profile_mode { 56c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen APPARMOR_ENFORCE, /* enforce access rules */ 57c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen APPARMOR_COMPLAIN, /* allow and log access violations */ 58c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen APPARMOR_KILL, /* kill task on access violation */ 59038165070aa55375d4bdd2f84b34a486feca63d6John Johansen APPARMOR_UNCONFINED, /* profile set to unconfined */ 60c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen}; 61c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen 62c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansenenum profile_flags { 63c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen PFLAG_HAT = 1, /* profile is a hat */ 64c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen PFLAG_NULL = 4, /* profile is null learning profile */ 65c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen PFLAG_IX_ON_NAME_ERROR = 8, /* fallback to ix on name lookup fail */ 66c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen PFLAG_IMMUTABLE = 0x10, /* don't allow changes/replacement */ 67c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen PFLAG_USER_DEFINED = 0x20, /* user based profile - lower privs */ 68c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen PFLAG_NO_LIST_REF = 0x40, /* list doesn't keep profile ref */ 69c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen PFLAG_OLD_NULL_TRANS = 0x100, /* use // as the null transition */ 7077b071b34045a0c65d0e1f85f3d47fd2b8b7a8a1John Johansen PFLAG_INVALID = 0x200, /* profile replaced/removed */ 71fa2ac468db510c653499a47c1ec3deb045bf4763John Johansen PFLAG_NS_COUNT = 0x400, /* carries NS ref count */ 72c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen 73c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen /* These flags must correspond with PATH_flags */ 74c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen PFLAG_MEDIATE_DELETED = 0x10000, /* mediate instead delegate deleted */ 75c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen}; 76c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen 77c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansenstruct aa_profile; 78c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen 79c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen/* struct aa_policy - common part of both namespaces and profiles 80c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen * @name: name of the object 81c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen * @hname - The hierarchical name 82c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen * @list: list policy object is on 83c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen * @profiles: head of the profiles list contained in the object 84c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen */ 85c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansenstruct aa_policy { 86c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen char *name; 87c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen char *hname; 88c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen struct list_head list; 89c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen struct list_head profiles; 90c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen}; 91c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen 92c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen/* struct aa_ns_acct - accounting of profiles in namespace 93c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen * @max_size: maximum space allowed for all profiles in namespace 94c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen * @max_count: maximum number of profiles that can be in this namespace 95c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen * @size: current size of profiles 96c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen * @count: current count of profiles (includes null profiles) 97c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen */ 98c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansenstruct aa_ns_acct { 99c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen int max_size; 100c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen int max_count; 101c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen int size; 102c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen int count; 103c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen}; 104c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen 105c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen/* struct aa_namespace - namespace for a set of profiles 106c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen * @base: common policy 107c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen * @parent: parent of namespace 108c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen * @lock: lock for modifying the object 109c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen * @acct: accounting for the namespace 110c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen * @unconfined: special unconfined profile for the namespace 111c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen * @sub_ns: list of namespaces under the current namespace. 112a4987857d2c958b93b2faafe0811eea1a63ff59aJohn Johansen * @uniq_null: uniq value used for null learning profiles 1130d259f043f5f60f74c4fd020aac190cb6450e918John Johansen * @uniq_id: a unique id count for the profiles in the namespace 1140d259f043f5f60f74c4fd020aac190cb6450e918John Johansen * @dents: dentries for the namespaces file entries in apparmorfs 115c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen * 116c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen * An aa_namespace defines the set profiles that are searched to determine 117c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen * which profile to attach to a task. Profiles can not be shared between 118c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen * aa_namespaces and profile names within a namespace are guaranteed to be 119c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen * unique. When profiles in separate namespaces have the same name they 120c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen * are NOT considered to be equivalent. 121c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen * 122c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen * Namespaces are hierarchical and only namespaces and profiles below the 123c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen * current namespace are visible. 124c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen * 125c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen * Namespace names must be unique and can not contain the characters :/\0 126c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen * 127c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen * FIXME TODO: add vserver support of namespaces (can it all be done in 128c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen * userspace?) 129c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen */ 130c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansenstruct aa_namespace { 131c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen struct aa_policy base; 132c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen struct aa_namespace *parent; 13301e2b670aa898a39259bc85c78e3d74820f4d3b6John Johansen struct mutex lock; 134c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen struct aa_ns_acct acct; 135c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen struct aa_profile *unconfined; 136c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen struct list_head sub_ns; 137a4987857d2c958b93b2faafe0811eea1a63ff59aJohn Johansen atomic_t uniq_null; 1380d259f043f5f60f74c4fd020aac190cb6450e918John Johansen long uniq_id; 1390d259f043f5f60f74c4fd020aac190cb6450e918John Johansen 1400d259f043f5f60f74c4fd020aac190cb6450e918John Johansen struct dentry *dents[AAFS_NS_SIZEOF]; 141c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen}; 142c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen 143ad5ff3db53c68c2f12936bc74ea5dfe0af943592John Johansen/* struct aa_policydb - match engine for a policy 144ad5ff3db53c68c2f12936bc74ea5dfe0af943592John Johansen * dfa: dfa pattern match 145ad5ff3db53c68c2f12936bc74ea5dfe0af943592John Johansen * start: set of start states for the different classes of data 146ad5ff3db53c68c2f12936bc74ea5dfe0af943592John Johansen */ 147ad5ff3db53c68c2f12936bc74ea5dfe0af943592John Johansenstruct aa_policydb { 148ad5ff3db53c68c2f12936bc74ea5dfe0af943592John Johansen /* Generic policy DFA specific rule types will be subsections of it */ 149ad5ff3db53c68c2f12936bc74ea5dfe0af943592John Johansen struct aa_dfa *dfa; 150ad5ff3db53c68c2f12936bc74ea5dfe0af943592John Johansen unsigned int start[AA_CLASS_LAST + 1]; 151ad5ff3db53c68c2f12936bc74ea5dfe0af943592John Johansen 152ad5ff3db53c68c2f12936bc74ea5dfe0af943592John Johansen}; 153ad5ff3db53c68c2f12936bc74ea5dfe0af943592John Johansen 15477b071b34045a0c65d0e1f85f3d47fd2b8b7a8a1John Johansenstruct aa_replacedby { 15577b071b34045a0c65d0e1f85f3d47fd2b8b7a8a1John Johansen struct kref count; 15677b071b34045a0c65d0e1f85f3d47fd2b8b7a8a1John Johansen struct aa_profile __rcu *profile; 15777b071b34045a0c65d0e1f85f3d47fd2b8b7a8a1John Johansen}; 15877b071b34045a0c65d0e1f85f3d47fd2b8b7a8a1John Johansen 15977b071b34045a0c65d0e1f85f3d47fd2b8b7a8a1John Johansen 160c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen/* struct aa_profile - basic confinement data 161c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen * @base - base components of the profile (name, refcount, lists, lock ...) 162fa2ac468db510c653499a47c1ec3deb045bf4763John Johansen * @count: reference count of the obj 163742058b0f3a2ed32e2a7349aff97989dc4e32452John Johansen * @rcu: rcu head used when removing from @list 164c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen * @parent: parent of profile 165c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen * @ns: namespace the profile is in 166c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen * @replacedby: is set to the profile that replaced this profile 167c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen * @rename: optional profile name that this profile renamed 168556d0be74b19cb6288e5eb2f3216eac247d87968John Johansen * @attach: human readable attachment string 169c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen * @xmatch: optional extended matching for unconfined executables names 170c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen * @xmatch_len: xmatch prefix len, used to determine xmatch priority 171c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen * @audit: the auditing mode of the profile 172c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen * @mode: the enforcement mode of the profile 173c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen * @flags: flags controlling profile behavior 174c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen * @path_flags: flags controlling path generation behavior 175c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen * @size: the memory consumed by this profiles rules 176ad5ff3db53c68c2f12936bc74ea5dfe0af943592John Johansen * @policy: general match rules governing policy 177c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen * @file: The set of rules governing basic file access and domain transitions 178c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen * @caps: capabilities for the profile 179c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen * @rlimits: rlimits for the profile 180c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen * 1810d259f043f5f60f74c4fd020aac190cb6450e918John Johansen * @dents: dentries for the profiles file entries in apparmorfs 1820d259f043f5f60f74c4fd020aac190cb6450e918John Johansen * @dirname: name of the profile dir in apparmorfs 1830d259f043f5f60f74c4fd020aac190cb6450e918John Johansen * 184c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen * The AppArmor profile contains the basic confinement data. Each profile 185c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen * has a name, and exists in a namespace. The @name and @exec_match are 186c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen * used to determine profile attachment against unconfined tasks. All other 187c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen * attachments are determined by profile X transition rules. 188c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen * 18977b071b34045a0c65d0e1f85f3d47fd2b8b7a8a1John Johansen * The @replacedby struct is write protected by the profile lock. 190c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen * 191c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen * Profiles have a hierarchy where hats and children profiles keep 192c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen * a reference to their parent. 193c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen * 194c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen * Profile names can not begin with a : and can not contain the \0 195c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen * character. If a profile name begins with / it will be considered when 196c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen * determining profile attachment on "unconfined" tasks. 197c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen */ 198c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansenstruct aa_profile { 199c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen struct aa_policy base; 200fa2ac468db510c653499a47c1ec3deb045bf4763John Johansen struct kref count; 201742058b0f3a2ed32e2a7349aff97989dc4e32452John Johansen struct rcu_head rcu; 20201e2b670aa898a39259bc85c78e3d74820f4d3b6John Johansen struct aa_profile __rcu *parent; 203c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen 204c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen struct aa_namespace *ns; 20577b071b34045a0c65d0e1f85f3d47fd2b8b7a8a1John Johansen struct aa_replacedby *replacedby; 206c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen const char *rename; 207c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen 208556d0be74b19cb6288e5eb2f3216eac247d87968John Johansen const char *attach; 209c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen struct aa_dfa *xmatch; 210c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen int xmatch_len; 211c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen enum audit_mode audit; 212038165070aa55375d4bdd2f84b34a486feca63d6John Johansen long mode; 21377b071b34045a0c65d0e1f85f3d47fd2b8b7a8a1John Johansen long flags; 214c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen u32 path_flags; 215c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen int size; 216c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen 217ad5ff3db53c68c2f12936bc74ea5dfe0af943592John Johansen struct aa_policydb policy; 218c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen struct aa_file_rules file; 219c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen struct aa_caps caps; 220c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen struct aa_rlimit rlimits; 2210d259f043f5f60f74c4fd020aac190cb6450e918John Johansen 222f8eb8a1324e81927b2c64823b2fc38386efd3fefJohn Johansen unsigned char *hash; 2230d259f043f5f60f74c4fd020aac190cb6450e918John Johansen char *dirname; 2240d259f043f5f60f74c4fd020aac190cb6450e918John Johansen struct dentry *dents[AAFS_PROF_SIZEOF]; 225c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen}; 226c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen 227c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansenextern struct aa_namespace *root_ns; 228c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansenextern enum profile_mode aa_g_profile_mode; 229c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen 230c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansenvoid aa_add_profile(struct aa_policy *common, struct aa_profile *profile); 231c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen 232c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansenbool aa_ns_visible(struct aa_namespace *curr, struct aa_namespace *view); 233c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansenconst char *aa_ns_name(struct aa_namespace *parent, struct aa_namespace *child); 234c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansenint aa_alloc_root_ns(void); 235c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansenvoid aa_free_root_ns(void); 236c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansenvoid aa_free_namespace_kref(struct kref *kref); 237c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen 238c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansenstruct aa_namespace *aa_find_namespace(struct aa_namespace *root, 239c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen const char *name); 240c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen 241c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen 24277b071b34045a0c65d0e1f85f3d47fd2b8b7a8a1John Johansenvoid aa_free_replacedby_kref(struct kref *kref); 243c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansenstruct aa_profile *aa_alloc_profile(const char *name); 244c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansenstruct aa_profile *aa_new_null_profile(struct aa_profile *parent, int hat); 2458651e1d6572bc2c061073f05fabcd7175789259dJohn Johansenvoid aa_free_profile(struct aa_profile *profile); 246c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansenvoid aa_free_profile_kref(struct kref *kref); 247c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansenstruct aa_profile *aa_find_child(struct aa_profile *parent, const char *name); 248c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansenstruct aa_profile *aa_lookup_profile(struct aa_namespace *ns, const char *name); 249c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansenstruct aa_profile *aa_match_profile(struct aa_namespace *ns, const char *name); 250c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen 251c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansenssize_t aa_replace_profiles(void *udata, size_t size, bool noreplace); 252c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansenssize_t aa_remove_profiles(char *name, size_t size); 253c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen 254c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen#define PROF_ADD 1 255c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen#define PROF_REPLACE 0 256c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen 257038165070aa55375d4bdd2f84b34a486feca63d6John Johansen#define unconfined(X) ((X)->mode == APPARMOR_UNCONFINED) 258c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen 259c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen 2600d259f043f5f60f74c4fd020aac190cb6450e918John Johansenstatic inline struct aa_profile *aa_deref_parent(struct aa_profile *p) 2610d259f043f5f60f74c4fd020aac190cb6450e918John Johansen{ 2620d259f043f5f60f74c4fd020aac190cb6450e918John Johansen return rcu_dereference_protected(p->parent, 2630d259f043f5f60f74c4fd020aac190cb6450e918John Johansen mutex_is_locked(&p->ns->lock)); 2640d259f043f5f60f74c4fd020aac190cb6450e918John Johansen} 2650d259f043f5f60f74c4fd020aac190cb6450e918John Johansen 266c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen/** 267c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen * aa_get_profile - increment refcount on profile @p 268c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen * @p: profile (MAYBE NULL) 269c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen * 270c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen * Returns: pointer to @p if @p is NULL will return NULL 271c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen * Requires: @p must be held with valid refcount when called 272c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen */ 273c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansenstatic inline struct aa_profile *aa_get_profile(struct aa_profile *p) 274c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen{ 275c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen if (p) 276fa2ac468db510c653499a47c1ec3deb045bf4763John Johansen kref_get(&(p->count)); 277c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen 278c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen return p; 279c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen} 280c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen 281c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen/** 28201e2b670aa898a39259bc85c78e3d74820f4d3b6John Johansen * aa_get_profile_not0 - increment refcount on profile @p found via lookup 28301e2b670aa898a39259bc85c78e3d74820f4d3b6John Johansen * @p: profile (MAYBE NULL) 28401e2b670aa898a39259bc85c78e3d74820f4d3b6John Johansen * 28501e2b670aa898a39259bc85c78e3d74820f4d3b6John Johansen * Returns: pointer to @p if @p is NULL will return NULL 28601e2b670aa898a39259bc85c78e3d74820f4d3b6John Johansen * Requires: @p must be held with valid refcount when called 28701e2b670aa898a39259bc85c78e3d74820f4d3b6John Johansen */ 28801e2b670aa898a39259bc85c78e3d74820f4d3b6John Johansenstatic inline struct aa_profile *aa_get_profile_not0(struct aa_profile *p) 28901e2b670aa898a39259bc85c78e3d74820f4d3b6John Johansen{ 290fa2ac468db510c653499a47c1ec3deb045bf4763John Johansen if (p && kref_get_not0(&p->count)) 29101e2b670aa898a39259bc85c78e3d74820f4d3b6John Johansen return p; 29201e2b670aa898a39259bc85c78e3d74820f4d3b6John Johansen 29301e2b670aa898a39259bc85c78e3d74820f4d3b6John Johansen return NULL; 29401e2b670aa898a39259bc85c78e3d74820f4d3b6John Johansen} 29501e2b670aa898a39259bc85c78e3d74820f4d3b6John Johansen 29601e2b670aa898a39259bc85c78e3d74820f4d3b6John Johansen/** 29701e2b670aa898a39259bc85c78e3d74820f4d3b6John Johansen * aa_get_profile_rcu - increment a refcount profile that can be replaced 29801e2b670aa898a39259bc85c78e3d74820f4d3b6John Johansen * @p: pointer to profile that can be replaced (NOT NULL) 29901e2b670aa898a39259bc85c78e3d74820f4d3b6John Johansen * 30001e2b670aa898a39259bc85c78e3d74820f4d3b6John Johansen * Returns: pointer to a refcounted profile. 30101e2b670aa898a39259bc85c78e3d74820f4d3b6John Johansen * else NULL if no profile 30201e2b670aa898a39259bc85c78e3d74820f4d3b6John Johansen */ 30301e2b670aa898a39259bc85c78e3d74820f4d3b6John Johansenstatic inline struct aa_profile *aa_get_profile_rcu(struct aa_profile __rcu **p) 30401e2b670aa898a39259bc85c78e3d74820f4d3b6John Johansen{ 30501e2b670aa898a39259bc85c78e3d74820f4d3b6John Johansen struct aa_profile *c; 30601e2b670aa898a39259bc85c78e3d74820f4d3b6John Johansen 30701e2b670aa898a39259bc85c78e3d74820f4d3b6John Johansen rcu_read_lock(); 30801e2b670aa898a39259bc85c78e3d74820f4d3b6John Johansen do { 30901e2b670aa898a39259bc85c78e3d74820f4d3b6John Johansen c = rcu_dereference(*p); 310fa2ac468db510c653499a47c1ec3deb045bf4763John Johansen } while (c && !kref_get_not0(&c->count)); 31101e2b670aa898a39259bc85c78e3d74820f4d3b6John Johansen rcu_read_unlock(); 31201e2b670aa898a39259bc85c78e3d74820f4d3b6John Johansen 31301e2b670aa898a39259bc85c78e3d74820f4d3b6John Johansen return c; 31401e2b670aa898a39259bc85c78e3d74820f4d3b6John Johansen} 31501e2b670aa898a39259bc85c78e3d74820f4d3b6John Johansen 31601e2b670aa898a39259bc85c78e3d74820f4d3b6John Johansen/** 31777b071b34045a0c65d0e1f85f3d47fd2b8b7a8a1John Johansen * aa_get_newest_profile - find the newest version of @profile 31877b071b34045a0c65d0e1f85f3d47fd2b8b7a8a1John Johansen * @profile: the profile to check for newer versions of 31977b071b34045a0c65d0e1f85f3d47fd2b8b7a8a1John Johansen * 32077b071b34045a0c65d0e1f85f3d47fd2b8b7a8a1John Johansen * Returns: refcounted newest version of @profile taking into account 32177b071b34045a0c65d0e1f85f3d47fd2b8b7a8a1John Johansen * replacement, renames and removals 32277b071b34045a0c65d0e1f85f3d47fd2b8b7a8a1John Johansen * return @profile. 32377b071b34045a0c65d0e1f85f3d47fd2b8b7a8a1John Johansen */ 32477b071b34045a0c65d0e1f85f3d47fd2b8b7a8a1John Johansenstatic inline struct aa_profile *aa_get_newest_profile(struct aa_profile *p) 32577b071b34045a0c65d0e1f85f3d47fd2b8b7a8a1John Johansen{ 32677b071b34045a0c65d0e1f85f3d47fd2b8b7a8a1John Johansen if (!p) 32777b071b34045a0c65d0e1f85f3d47fd2b8b7a8a1John Johansen return NULL; 32877b071b34045a0c65d0e1f85f3d47fd2b8b7a8a1John Johansen 32977b071b34045a0c65d0e1f85f3d47fd2b8b7a8a1John Johansen if (PROFILE_INVALID(p)) 33077b071b34045a0c65d0e1f85f3d47fd2b8b7a8a1John Johansen return aa_get_profile_rcu(&p->replacedby->profile); 33177b071b34045a0c65d0e1f85f3d47fd2b8b7a8a1John Johansen 33277b071b34045a0c65d0e1f85f3d47fd2b8b7a8a1John Johansen return aa_get_profile(p); 33377b071b34045a0c65d0e1f85f3d47fd2b8b7a8a1John Johansen} 33477b071b34045a0c65d0e1f85f3d47fd2b8b7a8a1John Johansen 33577b071b34045a0c65d0e1f85f3d47fd2b8b7a8a1John Johansen/** 336c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen * aa_put_profile - decrement refcount on profile @p 337c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen * @p: profile (MAYBE NULL) 338c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen */ 339c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansenstatic inline void aa_put_profile(struct aa_profile *p) 340c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen{ 341742058b0f3a2ed32e2a7349aff97989dc4e32452John Johansen if (p) 342742058b0f3a2ed32e2a7349aff97989dc4e32452John Johansen kref_put(&p->count, aa_free_profile_kref); 343c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen} 344c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen 34577b071b34045a0c65d0e1f85f3d47fd2b8b7a8a1John Johansenstatic inline struct aa_replacedby *aa_get_replacedby(struct aa_replacedby *p) 34677b071b34045a0c65d0e1f85f3d47fd2b8b7a8a1John Johansen{ 34777b071b34045a0c65d0e1f85f3d47fd2b8b7a8a1John Johansen if (p) 34877b071b34045a0c65d0e1f85f3d47fd2b8b7a8a1John Johansen kref_get(&(p->count)); 34977b071b34045a0c65d0e1f85f3d47fd2b8b7a8a1John Johansen 35077b071b34045a0c65d0e1f85f3d47fd2b8b7a8a1John Johansen return p; 35177b071b34045a0c65d0e1f85f3d47fd2b8b7a8a1John Johansen} 35277b071b34045a0c65d0e1f85f3d47fd2b8b7a8a1John Johansen 35377b071b34045a0c65d0e1f85f3d47fd2b8b7a8a1John Johansenstatic inline void aa_put_replacedby(struct aa_replacedby *p) 35477b071b34045a0c65d0e1f85f3d47fd2b8b7a8a1John Johansen{ 35577b071b34045a0c65d0e1f85f3d47fd2b8b7a8a1John Johansen if (p) 35677b071b34045a0c65d0e1f85f3d47fd2b8b7a8a1John Johansen kref_put(&p->count, aa_free_replacedby_kref); 35777b071b34045a0c65d0e1f85f3d47fd2b8b7a8a1John Johansen} 35877b071b34045a0c65d0e1f85f3d47fd2b8b7a8a1John Johansen 35977b071b34045a0c65d0e1f85f3d47fd2b8b7a8a1John Johansen/* requires profile list write lock held */ 36077b071b34045a0c65d0e1f85f3d47fd2b8b7a8a1John Johansenstatic inline void __aa_update_replacedby(struct aa_profile *orig, 36177b071b34045a0c65d0e1f85f3d47fd2b8b7a8a1John Johansen struct aa_profile *new) 36277b071b34045a0c65d0e1f85f3d47fd2b8b7a8a1John Johansen{ 3634cd4fc77032dca46fe7475d81461e29145db247aJohn Johansen struct aa_profile *tmp; 3644cd4fc77032dca46fe7475d81461e29145db247aJohn Johansen tmp = rcu_dereference_protected(orig->replacedby->profile, 3654cd4fc77032dca46fe7475d81461e29145db247aJohn Johansen mutex_is_locked(&orig->ns->lock)); 36677b071b34045a0c65d0e1f85f3d47fd2b8b7a8a1John Johansen rcu_assign_pointer(orig->replacedby->profile, aa_get_profile(new)); 36777b071b34045a0c65d0e1f85f3d47fd2b8b7a8a1John Johansen orig->flags |= PFLAG_INVALID; 36877b071b34045a0c65d0e1f85f3d47fd2b8b7a8a1John Johansen aa_put_profile(tmp); 36977b071b34045a0c65d0e1f85f3d47fd2b8b7a8a1John Johansen} 37077b071b34045a0c65d0e1f85f3d47fd2b8b7a8a1John Johansen 371fa2ac468db510c653499a47c1ec3deb045bf4763John Johansen/** 372fa2ac468db510c653499a47c1ec3deb045bf4763John Johansen * aa_get_namespace - increment references count on @ns 373fa2ac468db510c653499a47c1ec3deb045bf4763John Johansen * @ns: namespace to increment reference count of (MAYBE NULL) 374fa2ac468db510c653499a47c1ec3deb045bf4763John Johansen * 375fa2ac468db510c653499a47c1ec3deb045bf4763John Johansen * Returns: pointer to @ns, if @ns is NULL returns NULL 376fa2ac468db510c653499a47c1ec3deb045bf4763John Johansen * Requires: @ns must be held with valid refcount when called 377fa2ac468db510c653499a47c1ec3deb045bf4763John Johansen */ 378fa2ac468db510c653499a47c1ec3deb045bf4763John Johansenstatic inline struct aa_namespace *aa_get_namespace(struct aa_namespace *ns) 379fa2ac468db510c653499a47c1ec3deb045bf4763John Johansen{ 380fa2ac468db510c653499a47c1ec3deb045bf4763John Johansen if (ns) 381fa2ac468db510c653499a47c1ec3deb045bf4763John Johansen aa_get_profile(ns->unconfined); 382fa2ac468db510c653499a47c1ec3deb045bf4763John Johansen 383fa2ac468db510c653499a47c1ec3deb045bf4763John Johansen return ns; 384fa2ac468db510c653499a47c1ec3deb045bf4763John Johansen} 385fa2ac468db510c653499a47c1ec3deb045bf4763John Johansen 386fa2ac468db510c653499a47c1ec3deb045bf4763John Johansen/** 387fa2ac468db510c653499a47c1ec3deb045bf4763John Johansen * aa_put_namespace - decrement refcount on @ns 388fa2ac468db510c653499a47c1ec3deb045bf4763John Johansen * @ns: namespace to put reference of 389fa2ac468db510c653499a47c1ec3deb045bf4763John Johansen * 390fa2ac468db510c653499a47c1ec3deb045bf4763John Johansen * Decrement reference count of @ns and if no longer in use free it 391fa2ac468db510c653499a47c1ec3deb045bf4763John Johansen */ 392fa2ac468db510c653499a47c1ec3deb045bf4763John Johansenstatic inline void aa_put_namespace(struct aa_namespace *ns) 393fa2ac468db510c653499a47c1ec3deb045bf4763John Johansen{ 394fa2ac468db510c653499a47c1ec3deb045bf4763John Johansen if (ns) 395fa2ac468db510c653499a47c1ec3deb045bf4763John Johansen aa_put_profile(ns->unconfined); 396fa2ac468db510c653499a47c1ec3deb045bf4763John Johansen} 397fa2ac468db510c653499a47c1ec3deb045bf4763John Johansen 398c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansenstatic inline int AUDIT_MODE(struct aa_profile *profile) 399c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen{ 400c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen if (aa_g_audit != AUDIT_NORMAL) 401c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen return aa_g_audit; 402c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen 403c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen return profile->audit; 404c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen} 405c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen 406c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansenbool aa_may_manage_policy(int op); 407c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen 408c88d4c7b049e87998ac0a9f455aa545cc895ef92John Johansen#endif /* __AA_POLICY_H */ 409