diff options
Diffstat (limited to 'security/apparmor/policy.c')
-rw-r--r-- | security/apparmor/policy.c | 392 |
1 files changed, 210 insertions, 182 deletions
diff --git a/security/apparmor/policy.c b/security/apparmor/policy.c index cf9d670dca94..244ea4a4a8f0 100644 --- a/security/apparmor/policy.c +++ b/security/apparmor/policy.c @@ -101,20 +101,9 @@ const char *const aa_profile_mode_names[] = { "unconfined", }; -/* requires profile list write lock held */ -void __aa_update_proxy(struct aa_profile *orig, struct aa_profile *new) -{ - struct aa_profile *tmp; - - tmp = rcu_dereference_protected(orig->proxy->profile, - mutex_is_locked(&orig->ns->lock)); - rcu_assign_pointer(orig->proxy->profile, aa_get_profile(new)); - orig->flags |= PFLAG_STALE; - aa_put_profile(tmp); -} /** - * __list_add_profile - add a profile to a list + * __add_profile - add a profiles to list and label tree * @list: list to add it to (NOT NULL) * @profile: the profile to add (NOT NULL) * @@ -122,12 +111,21 @@ void __aa_update_proxy(struct aa_profile *orig, struct aa_profile *new) * * Requires: namespace lock be held, or list not be shared */ -static void __list_add_profile(struct list_head *list, - struct aa_profile *profile) +static void __add_profile(struct list_head *list, struct aa_profile *profile) { + struct aa_label *l; + + AA_BUG(!list); + AA_BUG(!profile); + AA_BUG(!profile->ns); + AA_BUG(!mutex_is_locked(&profile->ns->lock)); + list_add_rcu(&profile->base.list, list); /* get list reference */ aa_get_profile(profile); + l = aa_label_insert(&profile->ns->labels, &profile->label); + AA_BUG(l != &profile->label); + aa_put_label(l); } /** @@ -144,6 +142,10 @@ static void __list_add_profile(struct list_head *list, */ static void __list_remove_profile(struct aa_profile *profile) { + AA_BUG(!profile); + AA_BUG(!profile->ns); + AA_BUG(!mutex_is_locked(&profile->ns->lock)); + list_del_rcu(&profile->base.list); aa_put_profile(profile); } @@ -156,11 +158,15 @@ static void __list_remove_profile(struct aa_profile *profile) */ static void __remove_profile(struct aa_profile *profile) { + AA_BUG(!profile); + AA_BUG(!profile->ns); + AA_BUG(!mutex_is_locked(&profile->ns->lock)); + /* release any children lists first */ __aa_profile_list_release(&profile->base.profiles); /* released by free_profile */ - __aa_update_proxy(profile, profile->ns->unconfined); - __aa_fs_profile_rmdir(profile); + aa_label_remove(&profile->label); + __aafs_profile_rmdir(profile); __list_remove_profile(profile); } @@ -177,24 +183,6 @@ void __aa_profile_list_release(struct list_head *head) __remove_profile(profile); } - -static void free_proxy(struct aa_proxy *p) -{ - if (p) { - /* r->profile will not be updated any more as r is dead */ - aa_put_profile(rcu_dereference_protected(p->profile, true)); - kzfree(p); - } -} - - -void aa_free_proxy_kref(struct kref *kref) -{ - struct aa_proxy *p = container_of(kref, struct aa_proxy, count); - - free_proxy(p); -} - /** * aa_free_data - free a data blob * @ptr: data to free @@ -242,7 +230,6 @@ void aa_free_profile(struct aa_profile *profile) kzfree(profile->dirname); aa_put_dfa(profile->xmatch); aa_put_dfa(profile->policy.dfa); - aa_put_proxy(profile->proxy); if (profile->data) { rht = profile->data; @@ -253,30 +240,8 @@ void aa_free_profile(struct aa_profile *profile) kzfree(profile->hash); aa_put_loaddata(profile->rawdata); - kzfree(profile); -} - -/** - * aa_free_profile_rcu - free aa_profile by rcu (called by aa_free_profile_kref) - * @head: rcu_head callback for freeing of a profile (NOT NULL) - */ -static void aa_free_profile_rcu(struct rcu_head *head) -{ - struct aa_profile *p = container_of(head, struct aa_profile, rcu); - if (p->flags & PFLAG_NS_COUNT) - aa_free_ns(p->ns); - else - aa_free_profile(p); -} -/** - * aa_free_profile_kref - free aa_profile by kref (called by aa_put_profile) - * @kr: kref callback for freeing of a profile (NOT NULL) - */ -void aa_free_profile_kref(struct kref *kref) -{ - struct aa_profile *p = container_of(kref, struct aa_profile, count); - call_rcu(&p->rcu, aa_free_profile_rcu); + kzfree(profile); } /** @@ -286,30 +251,40 @@ void aa_free_profile_kref(struct kref *kref) * * Returns: refcount profile or NULL on failure */ -struct aa_profile *aa_alloc_profile(const char *hname, gfp_t gfp) +struct aa_profile *aa_alloc_profile(const char *hname, struct aa_proxy *proxy, + gfp_t gfp) { struct aa_profile *profile; /* freed by free_profile - usually through aa_put_profile */ - profile = kzalloc(sizeof(*profile), gfp); + profile = kzalloc(sizeof(*profile) + sizeof(struct aa_profile *) * 2, + gfp); if (!profile) return NULL; - profile->proxy = kzalloc(sizeof(struct aa_proxy), gfp); - if (!profile->proxy) - goto fail; - kref_init(&profile->proxy->count); - if (!aa_policy_init(&profile->base, NULL, hname, gfp)) goto fail; - kref_init(&profile->count); + if (!aa_label_init(&profile->label, 1)) + goto fail; + + /* update being set needed by fs interface */ + if (!proxy) { + proxy = aa_alloc_proxy(&profile->label, gfp); + if (!proxy) + goto fail; + } else + aa_get_proxy(proxy); + profile->label.proxy = proxy; + + profile->label.hname = profile->base.hname; + profile->label.flags |= FLAG_PROFILE; + profile->label.vec[0] = profile; /* refcount released by caller */ return profile; fail: - kzfree(profile->proxy); - kzfree(profile); + aa_free_profile(profile); return NULL; } @@ -362,14 +337,14 @@ name: if (profile) goto out; - profile = aa_alloc_profile(name, gfp); + profile = aa_alloc_profile(name, NULL, gfp); if (!profile) goto fail; profile->mode = APPARMOR_COMPLAIN; - profile->flags |= PFLAG_NULL; + profile->label.flags |= FLAG_NULL; if (hat) - profile->flags |= PFLAG_HAT; + profile->label.flags |= FLAG_HAT; profile->path_flags = parent->path_flags; /* released on free_profile */ @@ -379,7 +354,7 @@ name: profile->policy.dfa = aa_get_dfa(nulldfa); mutex_lock(&profile->ns->lock); - __list_add_profile(&parent->base.profiles, profile); + __add_profile(&parent->base.profiles, profile); mutex_unlock(&profile->ns->lock); /* refcount released by caller */ @@ -389,7 +364,6 @@ out: return profile; fail: - kfree(name); aa_free_profile(profile); return NULL; } @@ -397,33 +371,33 @@ fail: /* TODO: profile accounting - setup in remove */ /** - * __find_child - find a profile on @head list with a name matching @name + * __strn_find_child - find a profile on @head list using substring of @name * @head: list to search (NOT NULL) * @name: name of profile (NOT NULL) + * @len: length of @name substring to match * * Requires: rcu_read_lock be held * * Returns: unrefcounted profile ptr, or NULL if not found */ -static struct aa_profile *__find_child(struct list_head *head, const char *name) +static struct aa_profile *__strn_find_child(struct list_head *head, + const char *name, int len) { - return (struct aa_profile *)__policy_find(head, name); + return (struct aa_profile *)__policy_strn_find(head, name, len); } /** - * __strn_find_child - find a profile on @head list using substring of @name + * __find_child - find a profile on @head list with a name matching @name * @head: list to search (NOT NULL) * @name: name of profile (NOT NULL) - * @len: length of @name substring to match * * Requires: rcu_read_lock be held * * Returns: unrefcounted profile ptr, or NULL if not found */ -static struct aa_profile *__strn_find_child(struct list_head *head, - const char *name, int len) +static struct aa_profile *__find_child(struct list_head *head, const char *name) { - return (struct aa_profile *)__policy_strn_find(head, name, len); + return __strn_find_child(head, name, strlen(name)); } /** @@ -556,7 +530,7 @@ struct aa_profile *aa_lookup_profile(struct aa_ns *ns, const char *hname) return aa_lookupn_profile(ns, hname, strlen(hname)); } -struct aa_profile *aa_fqlookupn_profile(struct aa_profile *base, +struct aa_profile *aa_fqlookupn_profile(struct aa_label *base, const char *fqname, size_t n) { struct aa_profile *profile; @@ -566,11 +540,11 @@ struct aa_profile *aa_fqlookupn_profile(struct aa_profile *base, name = aa_splitn_fqname(fqname, n, &ns_name, &ns_len); if (ns_name) { - ns = aa_findn_ns(base->ns, ns_name, ns_len); + ns = aa_lookupn_ns(labels_ns(base), ns_name, ns_len); if (!ns) return NULL; } else - ns = aa_get_ns(base->ns); + ns = aa_get_ns(labels_ns(base)); if (name) profile = aa_lookupn_profile(ns, name, n - (name - fqname)); @@ -596,7 +570,7 @@ static int replacement_allowed(struct aa_profile *profile, int noreplace, const char **info) { if (profile) { - if (profile->flags & PFLAG_IMMUTABLE) { + if (profile->label.flags & FLAG_IMMUTIBLE) { *info = "cannot replace immutible profile"; return -EPERM; } else if (noreplace) { @@ -619,29 +593,31 @@ static void audit_cb(struct audit_buffer *ab, void *va) } /** - * aa_audit_policy - Do auditing of policy changes - * @profile: profile to check if it can manage policy + * audit_policy - Do auditing of policy changes + * @label: label to check if it can manage policy * @op: policy operation being performed - * @gfp: memory allocation flags - * @nsname: name of the ns being manipulated (MAY BE NULL) + * @ns_name: name of namespace being manipulated * @name: name of profile being manipulated (NOT NULL) * @info: any extra information to be audited (MAYBE NULL) * @error: error code * * Returns: the error to be returned after audit is done */ -static int audit_policy(struct aa_profile *profile, const char *op, - const char *nsname, const char *name, +static int audit_policy(struct aa_label *label, const char *op, + const char *ns_name, const char *name, const char *info, int error) { DEFINE_AUDIT_DATA(sa, LSM_AUDIT_DATA_NONE, op); - aad(&sa)->iface.ns = nsname; + aad(&sa)->iface.ns = ns_name; aad(&sa)->name = name; aad(&sa)->info = info; aad(&sa)->error = error; + aad(&sa)->label = label; + + aa_audit_msg(AUDIT_APPARMOR_STATUS, &sa, audit_cb); - return aa_audit(AUDIT_APPARMOR_STATUS, profile, &sa, audit_cb); + return error; } /** @@ -685,22 +661,30 @@ bool policy_admin_capable(struct aa_ns *ns) /** * aa_may_manage_policy - can the current task manage policy - * @profile: profile to check if it can manage policy + * @label: label to check if it can manage policy * @op: the policy manipulation operation being done * * Returns: 0 if the task is allowed to manipulate policy else error */ -int aa_may_manage_policy(struct aa_profile *profile, struct aa_ns *ns, - const char *op) +int aa_may_manage_policy(struct aa_label *label, struct aa_ns *ns, u32 mask) { + const char *op; + + if (mask & AA_MAY_REMOVE_POLICY) + op = OP_PROF_RM; + else if (mask & AA_MAY_REPLACE_POLICY) + op = OP_PROF_REPL; + else + op = OP_PROF_LOAD; + /* check if loading policy is locked out */ if (aa_g_lock_policy) - return audit_policy(profile, op, NULL, NULL, - "policy_locked", -EACCES); + return audit_policy(label, op, NULL, NULL, "policy_locked", + -EACCES); if (!policy_admin_capable(ns)) - return audit_policy(profile, op, NULL, NULL, - "not policy admin", -EACCES); + return audit_policy(label, op, NULL, NULL, "not policy admin", + -EACCES); /* TODO: add fine grained mediation of policy loads */ return 0; @@ -742,8 +726,7 @@ static struct aa_profile *__list_lookup_parent(struct list_head *lh, * * Requires: namespace list lock be held, or list not be shared */ -static void __replace_profile(struct aa_profile *old, struct aa_profile *new, - bool share_proxy) +static void __replace_profile(struct aa_profile *old, struct aa_profile *new) { struct aa_profile *child, *tmp; @@ -758,7 +741,7 @@ static void __replace_profile(struct aa_profile *old, struct aa_profile *new, p = __find_child(&new->base.profiles, child->base.name); if (p) { /* @p replaces @child */ - __replace_profile(child, p, share_proxy); + __replace_profile(child, p); continue; } @@ -776,15 +759,9 @@ static void __replace_profile(struct aa_profile *old, struct aa_profile *new, struct aa_profile *parent = aa_deref_parent(old); rcu_assign_pointer(new->parent, aa_get_profile(parent)); } - __aa_update_proxy(old, new); - if (share_proxy) { - aa_put_proxy(new->proxy); - new->proxy = aa_get_proxy(old->proxy); - } else if (!rcu_access_pointer(new->proxy->profile)) - /* aafs interface uses proxy */ - rcu_assign_pointer(new->proxy->profile, - aa_get_profile(new)); - __aa_fs_profile_migrate_dents(old, new); + aa_label_replace(&old->label, &new->label); + /* migrate dents must come after label replacement b/c update */ + __aafs_profile_migrate_dents(old, new); if (list_empty(&new->base.list)) { /* new is not on a list already */ @@ -821,11 +798,41 @@ static int __lookup_replace(struct aa_ns *ns, const char *hname, return 0; } +static void share_name(struct aa_profile *old, struct aa_profile *new) +{ + aa_put_str(new->base.hname); + aa_get_str(old->base.hname); + new->base.hname = old->base.hname; + new->base.name = old->base.name; + new->label.hname = old->label.hname; +} + +/* Update to newest version of parent after previous replacements + * Returns: unrefcount newest version of parent + */ +static struct aa_profile *update_to_newest_parent(struct aa_profile *new) +{ + struct aa_profile *parent, *newest; + + parent = rcu_dereference_protected(new->parent, + mutex_is_locked(&new->ns->lock)); + newest = aa_get_newest_profile(parent); + + /* parent replaced in this atomic set? */ + if (newest != parent) { + aa_put_profile(parent); + rcu_assign_pointer(new->parent, newest); + } else + aa_put_profile(newest); + + return newest; +} + /** * aa_replace_profiles - replace profile(s) on the profile list - * @view: namespace load is viewed from + * @policy_ns: namespace load is occurring on * @label: label that is attempting to load/replace policy - * @noreplace: true if only doing addition, no replacement allowed + * @mask: permission mask * @udata: serialized data stream (NOT NULL) * * unpack and replace a profile on the profile list and uses of that profile @@ -834,16 +841,19 @@ static int __lookup_replace(struct aa_ns *ns, const char *hname, * * Returns: size of data consumed else error code on failure. */ -ssize_t aa_replace_profiles(struct aa_ns *view, struct aa_profile *profile, - bool noreplace, struct aa_loaddata *udata) +ssize_t aa_replace_profiles(struct aa_ns *policy_ns, struct aa_label *label, + u32 mask, struct aa_loaddata *udata) { const char *ns_name, *info = NULL; struct aa_ns *ns = NULL; struct aa_load_ent *ent, *tmp; - const char *op = OP_PROF_REPL; + struct aa_loaddata *rawdata_ent; + const char *op; ssize_t count, error; LIST_HEAD(lh); + op = mask & AA_MAY_REPLACE_POLICY ? OP_PROF_REPL : OP_PROF_LOAD; + aa_get_loaddata(udata); /* released below */ error = aa_unpack(udata, &lh, &ns_name); if (error) @@ -874,7 +884,8 @@ ssize_t aa_replace_profiles(struct aa_ns *view, struct aa_profile *profile, count++; } if (ns_name) { - ns = aa_prepare_ns(view, ns_name); + ns = aa_prepare_ns(policy_ns ? policy_ns : labels_ns(label), + ns_name); if (IS_ERR(ns)) { op = OP_PROF_LOAD; info = "failed to prepare namespace"; @@ -884,22 +895,38 @@ ssize_t aa_replace_profiles(struct aa_ns *view, struct aa_profile *profile, goto fail; } } else - ns = aa_get_ns(view); + ns = aa_get_ns(policy_ns ? policy_ns : labels_ns(label)); mutex_lock(&ns->lock); + /* check for duplicate rawdata blobs: space and file dedup */ + list_for_each_entry(rawdata_ent, &ns->rawdata_list, list) { + if (aa_rawdata_eq(rawdata_ent, udata)) { + struct aa_loaddata *tmp; + + tmp = __aa_get_loaddata(rawdata_ent); + /* check we didn't fail the race */ + if (tmp) { + aa_put_loaddata(udata); + udata = tmp; + break; + } + } + } /* setup parent and ns info */ list_for_each_entry(ent, &lh, list) { struct aa_policy *policy; + ent->new->rawdata = aa_get_loaddata(udata); - error = __lookup_replace(ns, ent->new->base.hname, noreplace, + error = __lookup_replace(ns, ent->new->base.hname, + !(mask & AA_MAY_REPLACE_POLICY), &ent->old, &info); if (error) goto fail_lock; if (ent->new->rename) { error = __lookup_replace(ns, ent->new->rename, - noreplace, &ent->rename, - &info); + !(mask & AA_MAY_REPLACE_POLICY), + &ent->rename, &info); if (error) goto fail_lock; } @@ -929,15 +956,16 @@ ssize_t aa_replace_profiles(struct aa_ns *view, struct aa_profile *profile, } /* create new fs entries for introspection if needed */ + if (!udata->dents[AAFS_LOADDATA_DIR]) { + error = __aa_fs_create_rawdata(ns, udata); + if (error) { + info = "failed to create raw_data dir and files"; + ent = NULL; + goto fail_lock; + } + } list_for_each_entry(ent, &lh, list) { - if (ent->old) { - /* inherit old interface files */ - - /* if (ent->rename) - TODO: support rename */ - /* } else if (ent->rename) { - TODO: support rename */ - } else { + if (!ent->old) { struct dentry *parent; if (rcu_access_pointer(ent->new->parent)) { struct aa_profile *p; @@ -945,65 +973,61 @@ ssize_t aa_replace_profiles(struct aa_ns *view, struct aa_profile *profile, parent = prof_child_dir(p); } else parent = ns_subprofs_dir(ent->new->ns); - error = __aa_fs_profile_mkdir(ent->new, parent); + error = __aafs_profile_mkdir(ent->new, parent); } if (error) { - info = "failed to create "; + info = "failed to create"; goto fail_lock; } } /* Done with checks that may fail - do actual replacement */ + __aa_bump_ns_revision(ns); + __aa_loaddata_update(udata, ns->revision); list_for_each_entry_safe(ent, tmp, &lh, list) { list_del_init(&ent->list); op = (!ent->old && !ent->rename) ? OP_PROF_LOAD : OP_PROF_REPL; - audit_policy(profile, op, NULL, ent->new->base.hname, - NULL, error); + if (ent->old && ent->old->rawdata == ent->new->rawdata) { + /* dedup actual profile replacement */ + audit_policy(label, op, ns_name, ent->new->base.hname, + "same as current profile, skipping", + error); + goto skip; + } + + /* + * TODO: finer dedup based on profile range in data. Load set + * can differ but profile may remain unchanged + */ + audit_policy(label, op, ns_name, ent->new->base.hname, NULL, + error); if (ent->old) { - __replace_profile(ent->old, ent->new, 1); - if (ent->rename) { - /* aafs interface uses proxy */ - struct aa_proxy *r = ent->new->proxy; - rcu_assign_pointer(r->profile, - aa_get_profile(ent->new)); - __replace_profile(ent->rename, ent->new, 0); - } - } else if (ent->rename) { - /* aafs interface uses proxy */ - rcu_assign_pointer(ent->new->proxy->profile, - aa_get_profile(ent->new)); - __replace_profile(ent->rename, ent->new, 0); - } else if (ent->new->parent) { - struct aa_profile *parent, *newest; - parent = aa_deref_parent(ent->new); - newest = aa_get_newest_profile(parent); - - /* parent replaced in this atomic set? */ - if (newest != parent) { - aa_get_profile(newest); - rcu_assign_pointer(ent->new->parent, newest); - aa_put_profile(parent); - } - /* aafs interface uses proxy */ - rcu_assign_pointer(ent->new->proxy->profile, - aa_get_profile(ent->new)); - __list_add_profile(&newest->base.profiles, ent->new); - aa_put_profile(newest); + share_name(ent->old, ent->new); + __replace_profile(ent->old, ent->new); } else { - /* aafs interface uses proxy */ - rcu_assign_pointer(ent->new->proxy->profile, - aa_get_profile(ent->new)); - __list_add_profile(&ns->base.profiles, ent->new); + struct list_head *lh; + + if (rcu_access_pointer(ent->new->parent)) { + struct aa_profile *parent; + + parent = update_to_newest_parent(ent->new); + lh = &parent->base.profiles; + } else + lh = &ns->base.profiles; + __add_profile(lh, ent->new); } + skip: aa_load_ent_free(ent); } + __aa_labelset_update_subtree(ns); mutex_unlock(&ns->lock); out: aa_put_ns(ns); + aa_put_loaddata(udata); if (error) return error; @@ -1013,10 +1037,10 @@ fail_lock: mutex_unlock(&ns->lock); /* audit cause of failure */ - op = (!ent->old) ? OP_PROF_LOAD : OP_PROF_REPL; + op = (ent && !ent->old) ? OP_PROF_LOAD : OP_PROF_REPL; fail: - audit_policy(profile, op, ns_name, ent ? ent->new->base.hname : NULL, - info, error); + audit_policy(label, op, ns_name, ent ? ent->new->base.hname : NULL, + info, error); /* audit status that rest of profiles in the atomic set failed too */ info = "valid profile in failed atomic policy load"; list_for_each_entry(tmp, &lh, list) { @@ -1026,8 +1050,8 @@ fail: continue; } op = (!tmp->old) ? OP_PROF_LOAD : OP_PROF_REPL; - audit_policy(profile, op, ns_name, - tmp->new->base.hname, info, error); + audit_policy(label, op, ns_name, tmp->new->base.hname, info, + error); } list_for_each_entry_safe(ent, tmp, &lh, list) { list_del_init(&ent->list); @@ -1039,8 +1063,8 @@ fail: /** * aa_remove_profiles - remove profile(s) from the system - * @view: namespace the remove is being done from - * @subj: profile attempting to remove policy + * @policy_ns: namespace the remove is being done from + * @subj: label attempting to remove policy * @fqname: name of the profile or namespace to remove (NOT NULL) * @size: size of the name * @@ -1051,13 +1075,13 @@ fail: * * Returns: size of data consume else error code if fails */ -ssize_t aa_remove_profiles(struct aa_ns *view, struct aa_profile *subj, +ssize_t aa_remove_profiles(struct aa_ns *policy_ns, struct aa_label *subj, char *fqname, size_t size) { - struct aa_ns *root = NULL, *ns = NULL; + struct aa_ns *ns = NULL; struct aa_profile *profile = NULL; const char *name = fqname, *info = NULL; - char *ns_name = NULL; + const char *ns_name = NULL; ssize_t error = 0; if (*fqname == 0) { @@ -1066,12 +1090,13 @@ ssize_t aa_remove_profiles(struct aa_ns *view, struct aa_profile *subj, goto fail; } - root = view; - if (fqname[0] == ':') { - name = aa_split_fqname(fqname, &ns_name); + size_t ns_len; + + name = aa_splitn_fqname(fqname, size, &ns_name, &ns_len); /* released below */ - ns = aa_find_ns(root, ns_name); + ns = aa_lookupn_ns(policy_ns ? policy_ns : labels_ns(subj), + ns_name, ns_len); if (!ns) { info = "namespace does not exist"; error = -ENOENT; @@ -1079,12 +1104,13 @@ ssize_t aa_remove_profiles(struct aa_ns *view, struct aa_profile *subj, } } else /* released below */ - ns = aa_get_ns(root); + ns = aa_get_ns(policy_ns ? policy_ns : labels_ns(subj)); if (!name) { /* remove namespace - can only happen if fqname[0] == ':' */ mutex_lock(&ns->parent->lock); __aa_remove_ns(ns); + __aa_bump_ns_revision(ns); mutex_unlock(&ns->parent->lock); } else { /* remove profile */ @@ -1097,6 +1123,8 @@ ssize_t aa_remove_profiles(struct aa_ns *view, struct aa_profile *subj, } name = profile->base.hname; __remove_profile(profile); + __aa_labelset_update_subtree(ns); + __aa_bump_ns_revision(ns); mutex_unlock(&ns->lock); } |