diff options
Diffstat (limited to 'ANDROID_3.4.5/security/apparmor/include/policy.h')
| -rw-r--r-- | ANDROID_3.4.5/security/apparmor/include/policy.h | 318 |
1 files changed, 0 insertions, 318 deletions
diff --git a/ANDROID_3.4.5/security/apparmor/include/policy.h b/ANDROID_3.4.5/security/apparmor/include/policy.h deleted file mode 100644 index bda4569f..00000000 --- a/ANDROID_3.4.5/security/apparmor/include/policy.h +++ /dev/null @@ -1,318 +0,0 @@ -/* - * AppArmor security module - * - * This file contains AppArmor policy definitions. - * - * Copyright (C) 1998-2008 Novell/SUSE - * Copyright 2009-2010 Canonical Ltd. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation, version 2 of the - * License. - */ - -#ifndef __AA_POLICY_H -#define __AA_POLICY_H - -#include <linux/capability.h> -#include <linux/cred.h> -#include <linux/kref.h> -#include <linux/sched.h> -#include <linux/slab.h> -#include <linux/socket.h> - -#include "apparmor.h" -#include "audit.h" -#include "capability.h" -#include "domain.h" -#include "file.h" -#include "resource.h" - -extern const char *const profile_mode_names[]; -#define APPARMOR_NAMES_MAX_INDEX 3 - -#define COMPLAIN_MODE(_profile) \ - ((aa_g_profile_mode == APPARMOR_COMPLAIN) || \ - ((_profile)->mode == APPARMOR_COMPLAIN)) - -#define KILL_MODE(_profile) \ - ((aa_g_profile_mode == APPARMOR_KILL) || \ - ((_profile)->mode == APPARMOR_KILL)) - -#define PROFILE_IS_HAT(_profile) ((_profile)->flags & PFLAG_HAT) - -/* - * FIXME: currently need a clean way to replace and remove profiles as a - * set. It should be done at the namespace level. - * Either, with a set of profiles loaded at the namespace level or via - * a mark and remove marked interface. - */ -enum profile_mode { - APPARMOR_ENFORCE, /* enforce access rules */ - APPARMOR_COMPLAIN, /* allow and log access violations */ - APPARMOR_KILL, /* kill task on access violation */ -}; - -enum profile_flags { - PFLAG_HAT = 1, /* profile is a hat */ - PFLAG_UNCONFINED = 2, /* profile is an unconfined profile */ - PFLAG_NULL = 4, /* profile is null learning profile */ - PFLAG_IX_ON_NAME_ERROR = 8, /* fallback to ix on name lookup fail */ - PFLAG_IMMUTABLE = 0x10, /* don't allow changes/replacement */ - PFLAG_USER_DEFINED = 0x20, /* user based profile - lower privs */ - PFLAG_NO_LIST_REF = 0x40, /* list doesn't keep profile ref */ - PFLAG_OLD_NULL_TRANS = 0x100, /* use // as the null transition */ - - /* These flags must correspond with PATH_flags */ - PFLAG_MEDIATE_DELETED = 0x10000, /* mediate instead delegate deleted */ -}; - -struct aa_profile; - -/* struct aa_policy - common part of both namespaces and profiles - * @name: name of the object - * @hname - The hierarchical name - * @count: reference count of the obj - * @list: list policy object is on - * @profiles: head of the profiles list contained in the object - */ -struct aa_policy { - char *name; - char *hname; - struct kref count; - struct list_head list; - struct list_head profiles; -}; - -/* struct aa_ns_acct - accounting of profiles in namespace - * @max_size: maximum space allowed for all profiles in namespace - * @max_count: maximum number of profiles that can be in this namespace - * @size: current size of profiles - * @count: current count of profiles (includes null profiles) - */ -struct aa_ns_acct { - int max_size; - int max_count; - int size; - int count; -}; - -/* struct aa_namespace - namespace for a set of profiles - * @base: common policy - * @parent: parent of namespace - * @lock: lock for modifying the object - * @acct: accounting for the namespace - * @unconfined: special unconfined profile for the namespace - * @sub_ns: list of namespaces under the current namespace. - * - * An aa_namespace defines the set profiles that are searched to determine - * which profile to attach to a task. Profiles can not be shared between - * aa_namespaces and profile names within a namespace are guaranteed to be - * unique. When profiles in separate namespaces have the same name they - * are NOT considered to be equivalent. - * - * Namespaces are hierarchical and only namespaces and profiles below the - * current namespace are visible. - * - * Namespace names must be unique and can not contain the characters :/\0 - * - * FIXME TODO: add vserver support of namespaces (can it all be done in - * userspace?) - */ -struct aa_namespace { - struct aa_policy base; - struct aa_namespace *parent; - rwlock_t lock; - struct aa_ns_acct acct; - struct aa_profile *unconfined; - struct list_head sub_ns; -}; - -/* struct aa_policydb - match engine for a policy - * dfa: dfa pattern match - * start: set of start states for the different classes of data - */ -struct aa_policydb { - /* Generic policy DFA specific rule types will be subsections of it */ - struct aa_dfa *dfa; - unsigned int start[AA_CLASS_LAST + 1]; - -}; - -/* struct aa_profile - basic confinement data - * @base - base components of the profile (name, refcount, lists, lock ...) - * @parent: parent of profile - * @ns: namespace the profile is in - * @replacedby: is set to the profile that replaced this profile - * @rename: optional profile name that this profile renamed - * @xmatch: optional extended matching for unconfined executables names - * @xmatch_len: xmatch prefix len, used to determine xmatch priority - * @sid: the unique security id number of this profile - * @audit: the auditing mode of the profile - * @mode: the enforcement mode of the profile - * @flags: flags controlling profile behavior - * @path_flags: flags controlling path generation behavior - * @size: the memory consumed by this profiles rules - * @policy: general match rules governing policy - * @file: The set of rules governing basic file access and domain transitions - * @caps: capabilities for the profile - * @rlimits: rlimits for the profile - * - * The AppArmor profile contains the basic confinement data. Each profile - * has a name, and exists in a namespace. The @name and @exec_match are - * used to determine profile attachment against unconfined tasks. All other - * attachments are determined by profile X transition rules. - * - * The @replacedby field is write protected by the profile lock. Reads - * are assumed to be atomic, and are done without locking. - * - * Profiles have a hierarchy where hats and children profiles keep - * a reference to their parent. - * - * Profile names can not begin with a : and can not contain the \0 - * character. If a profile name begins with / it will be considered when - * determining profile attachment on "unconfined" tasks. - */ -struct aa_profile { - struct aa_policy base; - struct aa_profile *parent; - - struct aa_namespace *ns; - struct aa_profile *replacedby; - const char *rename; - - struct aa_dfa *xmatch; - int xmatch_len; - u32 sid; - enum audit_mode audit; - enum profile_mode mode; - u32 flags; - u32 path_flags; - int size; - - struct aa_policydb policy; - struct aa_file_rules file; - struct aa_caps caps; - struct aa_rlimit rlimits; -}; - -extern struct aa_namespace *root_ns; -extern enum profile_mode aa_g_profile_mode; - -void aa_add_profile(struct aa_policy *common, struct aa_profile *profile); - -bool aa_ns_visible(struct aa_namespace *curr, struct aa_namespace *view); -const char *aa_ns_name(struct aa_namespace *parent, struct aa_namespace *child); -int aa_alloc_root_ns(void); -void aa_free_root_ns(void); -void aa_free_namespace_kref(struct kref *kref); - -struct aa_namespace *aa_find_namespace(struct aa_namespace *root, - const char *name); - -static inline struct aa_policy *aa_get_common(struct aa_policy *c) -{ - if (c) - kref_get(&c->count); - - return c; -} - -/** - * aa_get_namespace - increment references count on @ns - * @ns: namespace to increment reference count of (MAYBE NULL) - * - * Returns: pointer to @ns, if @ns is NULL returns NULL - * Requires: @ns must be held with valid refcount when called - */ -static inline struct aa_namespace *aa_get_namespace(struct aa_namespace *ns) -{ - if (ns) - kref_get(&(ns->base.count)); - - return ns; -} - -/** - * aa_put_namespace - decrement refcount on @ns - * @ns: namespace to put reference of - * - * Decrement reference count of @ns and if no longer in use free it - */ -static inline void aa_put_namespace(struct aa_namespace *ns) -{ - if (ns) - kref_put(&ns->base.count, aa_free_namespace_kref); -} - -struct aa_profile *aa_alloc_profile(const char *name); -struct aa_profile *aa_new_null_profile(struct aa_profile *parent, int hat); -void aa_free_profile_kref(struct kref *kref); -struct aa_profile *aa_find_child(struct aa_profile *parent, const char *name); -struct aa_profile *aa_lookup_profile(struct aa_namespace *ns, const char *name); -struct aa_profile *aa_match_profile(struct aa_namespace *ns, const char *name); - -ssize_t aa_replace_profiles(void *udata, size_t size, bool noreplace); -ssize_t aa_remove_profiles(char *name, size_t size); - -#define PROF_ADD 1 -#define PROF_REPLACE 0 - -#define unconfined(X) ((X)->flags & PFLAG_UNCONFINED) - -/** - * aa_newest_version - find the newest version of @profile - * @profile: the profile to check for newer versions of (NOT NULL) - * - * Returns: newest version of @profile, if @profile is the newest version - * return @profile. - * - * NOTE: the profile returned is not refcounted, The refcount on @profile - * must be held until the caller decides what to do with the returned newest - * version. - */ -static inline struct aa_profile *aa_newest_version(struct aa_profile *profile) -{ - while (profile->replacedby) - profile = profile->replacedby; - - return profile; -} - -/** - * aa_get_profile - increment refcount on profile @p - * @p: profile (MAYBE NULL) - * - * Returns: pointer to @p if @p is NULL will return NULL - * Requires: @p must be held with valid refcount when called - */ -static inline struct aa_profile *aa_get_profile(struct aa_profile *p) -{ - if (p) - kref_get(&(p->base.count)); - - return p; -} - -/** - * aa_put_profile - decrement refcount on profile @p - * @p: profile (MAYBE NULL) - */ -static inline void aa_put_profile(struct aa_profile *p) -{ - if (p) - kref_put(&p->base.count, aa_free_profile_kref); -} - -static inline int AUDIT_MODE(struct aa_profile *profile) -{ - if (aa_g_audit != AUDIT_NORMAL) - return aa_g_audit; - - return profile->audit; -} - -bool aa_may_manage_policy(int op); - -#endif /* __AA_POLICY_H */ |