From patchwork Mon Dec 17 13:19:25 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kent Overstreet X-Patchwork-Id: 10733463 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 6962F13B5 for ; Mon, 17 Dec 2018 13:19:49 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 5845329772 for ; Mon, 17 Dec 2018 13:19:49 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 4886029782; Mon, 17 Dec 2018 13:19:49 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.0 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FROM,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 1501529772 for ; Mon, 17 Dec 2018 13:19:48 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732726AbeLQNTq (ORCPT ); Mon, 17 Dec 2018 08:19:46 -0500 Received: from mail-wr1-f67.google.com ([209.85.221.67]:33282 "EHLO mail-wr1-f67.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1732708AbeLQNTp (ORCPT ); Mon, 17 Dec 2018 08:19:45 -0500 Received: by mail-wr1-f67.google.com with SMTP id c14so12267214wrr.0; Mon, 17 Dec 2018 05:19:43 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=DcCHDP0Ar8dnx0qjE9yzkLfW1BdnK8DhCYtJcblvtHQ=; b=SmbU61X97RFAq194kUrzsOyz2IuTeZgcq3C3dz1uYhrxfZ26zEtjeyTaWlPl1Tnzz2 fICuGaQepAK9JV2dB/4d5QAdJwdQeTG4aFGE4Zap/uFgGyOiSLm2DXmnvv5meQDmSsOj bCiotStL69NBvWe1d+SmC3ZJ5yEztynAiZI2/fPYuxNX6UOety/BQMoV4KuDIdirpjun tBX9f6JFIt0c5wNZ/kAsLBkLFRIlSF816Ia8ZNXWj+97vBmDVvPZpwHJYKQPpmc6k5QF fc1P3t1arHw7bzuldx+bQmK8pMuT84TBJFMQAoGwOKmhxHje4uZ5rfKFN76hSWVRVLks O0iA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=DcCHDP0Ar8dnx0qjE9yzkLfW1BdnK8DhCYtJcblvtHQ=; b=cFbbKEAerr3APf24Jsulhy3gp4aKJpTcpth6kSVCyeJXreISR8PtDEIJamrXy8Asb4 BLSOfSgGyc/t0OGj55Gy4p59eg3wWip5C4wYpZJv+IYegtLbW6n+9jz+vtP9+854WvzP enXTkSLk4mPgCbLzByM8lJpRg2xI5vLhnZbCtQ41wPaDXuUyzQecyKlMGhsxf/IV4qpB QaI4oFiU+03ogBxEhmErEa277ZEZcWA5QLwTTYVVvM+eitnaN46ga65xgsSeeR5VMshO KQxkiH3/KddaAIPT1iDrLKsq3++rnavzIrVmXtvJroVImqsszqCy4vbIGuxHCcX7atSr ejUg== X-Gm-Message-State: AA+aEWbwboi4++DlBiHVb1i8nTEne2IhjROxioX3NpFM4gKhptYfisnU 3GCFrrSONEYpkledejLzXg== X-Google-Smtp-Source: AFSGD/XEr/YBYSzdyL+AuvO0gI5Ph0elMflDfkTPmi1smmn+IZUF/HDpGW0fbIhQ6lsPnbkfkfZKuA== X-Received: by 2002:a05:6000:10d1:: with SMTP id b17mr10537181wrx.306.1545052782182; Mon, 17 Dec 2018 05:19:42 -0800 (PST) Received: from kmo-pixel.syslink.intern ([93.240.4.121]) by smtp.gmail.com with ESMTPSA id x20sm20406120wme.6.2018.12.17.05.19.40 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Mon, 17 Dec 2018 05:19:41 -0800 (PST) From: Kent Overstreet To: akpm@linux-foundation.org, linux-kernel@vger.kernel.org Cc: Kent Overstreet , linux-security-module@vger.kernel.org Subject: [PATCH 3/7] selinux: convert to kvmalloc Date: Mon, 17 Dec 2018 08:19:25 -0500 Message-Id: <20181217131929.11727-4-kent.overstreet@gmail.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20181217131929.11727-1-kent.overstreet@gmail.com> References: <20181217131929.11727-1-kent.overstreet@gmail.com> MIME-Version: 1.0 Sender: owner-linux-security-module@vger.kernel.org Precedence: bulk List-ID: X-Virus-Scanned: ClamAV using ClamSMTP The flex arrays were being used for constant sized arrays, so there's no benefit to using flex_arrays over something simpler. Signed-off-by: Kent Overstreet Cc: linux-security-module@vger.kernel.org --- security/selinux/ss/avtab.c | 40 +++++----- security/selinux/ss/avtab.h | 4 +- security/selinux/ss/conditional.c | 6 +- security/selinux/ss/policydb.c | 122 ++++++++---------------------- security/selinux/ss/policydb.h | 12 +-- security/selinux/ss/services.c | 22 ++---- 6 files changed, 62 insertions(+), 144 deletions(-) diff --git a/security/selinux/ss/avtab.c b/security/selinux/ss/avtab.c index c0417cf17f..8c5800750f 100644 --- a/security/selinux/ss/avtab.c +++ b/security/selinux/ss/avtab.c @@ -93,12 +93,10 @@ avtab_insert_node(struct avtab *h, int hvalue, newnode->next = prev->next; prev->next = newnode; } else { - newnode->next = flex_array_get_ptr(h->htable, hvalue); - if (flex_array_put_ptr(h->htable, hvalue, newnode, - GFP_KERNEL|__GFP_ZERO)) { - kmem_cache_free(avtab_node_cachep, newnode); - return NULL; - } + struct avtab_node **n = &h->htable[hvalue]; + + newnode->next = *n; + *n = newnode; } h->nel++; @@ -111,11 +109,11 @@ static int avtab_insert(struct avtab *h, struct avtab_key *key, struct avtab_dat struct avtab_node *prev, *cur, *newnode; u16 specified = key->specified & ~(AVTAB_ENABLED|AVTAB_ENABLED_OLD); - if (!h || !h->htable) + if (!h) return -EINVAL; hvalue = avtab_hash(key, h->mask); - for (prev = NULL, cur = flex_array_get_ptr(h->htable, hvalue); + for (prev = NULL, cur = h->htable[hvalue]; cur; prev = cur, cur = cur->next) { if (key->source_type == cur->key.source_type && @@ -156,10 +154,10 @@ avtab_insert_nonunique(struct avtab *h, struct avtab_key *key, struct avtab_datu struct avtab_node *prev, *cur; u16 specified = key->specified & ~(AVTAB_ENABLED|AVTAB_ENABLED_OLD); - if (!h || !h->htable) + if (!h) return NULL; hvalue = avtab_hash(key, h->mask); - for (prev = NULL, cur = flex_array_get_ptr(h->htable, hvalue); + for (prev = NULL, cur = h->htable[hvalue]; cur; prev = cur, cur = cur->next) { if (key->source_type == cur->key.source_type && @@ -186,11 +184,11 @@ struct avtab_datum *avtab_search(struct avtab *h, struct avtab_key *key) struct avtab_node *cur; u16 specified = key->specified & ~(AVTAB_ENABLED|AVTAB_ENABLED_OLD); - if (!h || !h->htable) + if (!h) return NULL; hvalue = avtab_hash(key, h->mask); - for (cur = flex_array_get_ptr(h->htable, hvalue); cur; + for (cur = h->htable[hvalue]; cur; cur = cur->next) { if (key->source_type == cur->key.source_type && key->target_type == cur->key.target_type && @@ -222,11 +220,11 @@ avtab_search_node(struct avtab *h, struct avtab_key *key) struct avtab_node *cur; u16 specified = key->specified & ~(AVTAB_ENABLED|AVTAB_ENABLED_OLD); - if (!h || !h->htable) + if (!h) return NULL; hvalue = avtab_hash(key, h->mask); - for (cur = flex_array_get_ptr(h->htable, hvalue); cur; + for (cur = h->htable[hvalue]; cur; cur = cur->next) { if (key->source_type == cur->key.source_type && key->target_type == cur->key.target_type && @@ -281,11 +279,11 @@ void avtab_destroy(struct avtab *h) int i; struct avtab_node *cur, *temp; - if (!h || !h->htable) + if (!h) return; for (i = 0; i < h->nslot; i++) { - cur = flex_array_get_ptr(h->htable, i); + cur = h->htable[i]; while (cur) { temp = cur; cur = cur->next; @@ -295,7 +293,7 @@ void avtab_destroy(struct avtab *h) kmem_cache_free(avtab_node_cachep, temp); } } - flex_array_free(h->htable); + kvfree(h->htable); h->htable = NULL; h->nslot = 0; h->mask = 0; @@ -303,6 +301,7 @@ void avtab_destroy(struct avtab *h) int avtab_init(struct avtab *h) { + kvfree(h->htable); h->htable = NULL; h->nel = 0; return 0; @@ -329,8 +328,7 @@ int avtab_alloc(struct avtab *h, u32 nrules) nslot = MAX_AVTAB_HASH_BUCKETS; mask = nslot - 1; - h->htable = flex_array_alloc(sizeof(struct avtab_node *), nslot, - GFP_KERNEL | __GFP_ZERO); + h->htable = kvcalloc(nslot, sizeof(void *), GFP_KERNEL); if (!h->htable) return -ENOMEM; @@ -353,7 +351,7 @@ void avtab_hash_eval(struct avtab *h, char *tag) max_chain_len = 0; chain2_len_sum = 0; for (i = 0; i < h->nslot; i++) { - cur = flex_array_get_ptr(h->htable, i); + cur = h->htable[i]; if (cur) { slots_used++; chain_len = 0; @@ -646,7 +644,7 @@ int avtab_write(struct policydb *p, struct avtab *a, void *fp) return rc; for (i = 0; i < a->nslot; i++) { - for (cur = flex_array_get_ptr(a->htable, i); cur; + for (cur = a->htable[i]; cur; cur = cur->next) { rc = avtab_write_item(p, cur, fp); if (rc) diff --git a/security/selinux/ss/avtab.h b/security/selinux/ss/avtab.h index 0d652fad53..de16673b23 100644 --- a/security/selinux/ss/avtab.h +++ b/security/selinux/ss/avtab.h @@ -24,7 +24,6 @@ #define _SS_AVTAB_H_ #include "security.h" -#include struct avtab_key { u16 source_type; /* source type */ @@ -84,11 +83,10 @@ struct avtab_node { }; struct avtab { - struct flex_array *htable; + struct avtab_node **htable; u32 nel; /* number of elements */ u32 nslot; /* number of hash slots */ u32 mask; /* mask to compute hash func */ - }; int avtab_init(struct avtab *); diff --git a/security/selinux/ss/conditional.c b/security/selinux/ss/conditional.c index f49e522e93..3bbb603452 100644 --- a/security/selinux/ss/conditional.c +++ b/security/selinux/ss/conditional.c @@ -195,7 +195,6 @@ int cond_index_bool(void *key, void *datum, void *datap) { struct policydb *p; struct cond_bool_datum *booldatum; - struct flex_array *fa; booldatum = datum; p = datap; @@ -203,10 +202,7 @@ int cond_index_bool(void *key, void *datum, void *datap) if (!booldatum->value || booldatum->value > p->p_bools.nprim) return -EINVAL; - fa = p->sym_val_to_name[SYM_BOOLS]; - if (flex_array_put_ptr(fa, booldatum->value - 1, key, - GFP_KERNEL | __GFP_ZERO)) - BUG(); + p->sym_val_to_name[SYM_BOOLS][booldatum->value - 1] = key; p->bool_val_to_struct[booldatum->value - 1] = booldatum; return 0; diff --git a/security/selinux/ss/policydb.c b/security/selinux/ss/policydb.c index f4eadd3f73..16b7027bb7 100644 --- a/security/selinux/ss/policydb.c +++ b/security/selinux/ss/policydb.c @@ -36,7 +36,6 @@ #include #include #include -#include #include "security.h" #include "policydb.h" @@ -341,17 +340,14 @@ static int common_index(void *key, void *datum, void *datap) { struct policydb *p; struct common_datum *comdatum; - struct flex_array *fa; comdatum = datum; p = datap; if (!comdatum->value || comdatum->value > p->p_commons.nprim) return -EINVAL; - fa = p->sym_val_to_name[SYM_COMMONS]; - if (flex_array_put_ptr(fa, comdatum->value - 1, key, - GFP_KERNEL | __GFP_ZERO)) - BUG(); + p->sym_val_to_name[SYM_COMMONS][comdatum->value - 1] = key; + return 0; } @@ -359,16 +355,13 @@ static int class_index(void *key, void *datum, void *datap) { struct policydb *p; struct class_datum *cladatum; - struct flex_array *fa; cladatum = datum; p = datap; if (!cladatum->value || cladatum->value > p->p_classes.nprim) return -EINVAL; - fa = p->sym_val_to_name[SYM_CLASSES]; - if (flex_array_put_ptr(fa, cladatum->value - 1, key, - GFP_KERNEL | __GFP_ZERO)) - BUG(); + + p->sym_val_to_name[SYM_CLASSES][cladatum->value - 1] = key; p->class_val_to_struct[cladatum->value - 1] = cladatum; return 0; } @@ -377,7 +370,6 @@ static int role_index(void *key, void *datum, void *datap) { struct policydb *p; struct role_datum *role; - struct flex_array *fa; role = datum; p = datap; @@ -386,10 +378,7 @@ static int role_index(void *key, void *datum, void *datap) || role->bounds > p->p_roles.nprim) return -EINVAL; - fa = p->sym_val_to_name[SYM_ROLES]; - if (flex_array_put_ptr(fa, role->value - 1, key, - GFP_KERNEL | __GFP_ZERO)) - BUG(); + p->sym_val_to_name[SYM_ROLES][role->value - 1] = key; p->role_val_to_struct[role->value - 1] = role; return 0; } @@ -398,7 +387,6 @@ static int type_index(void *key, void *datum, void *datap) { struct policydb *p; struct type_datum *typdatum; - struct flex_array *fa; typdatum = datum; p = datap; @@ -408,15 +396,8 @@ static int type_index(void *key, void *datum, void *datap) || typdatum->value > p->p_types.nprim || typdatum->bounds > p->p_types.nprim) return -EINVAL; - fa = p->sym_val_to_name[SYM_TYPES]; - if (flex_array_put_ptr(fa, typdatum->value - 1, key, - GFP_KERNEL | __GFP_ZERO)) - BUG(); - - fa = p->type_val_to_struct_array; - if (flex_array_put_ptr(fa, typdatum->value - 1, typdatum, - GFP_KERNEL | __GFP_ZERO)) - BUG(); + p->sym_val_to_name[SYM_TYPES][typdatum->value - 1] = key; + p->type_val_to_struct_array[typdatum->value - 1] = typdatum; } return 0; @@ -426,7 +407,6 @@ static int user_index(void *key, void *datum, void *datap) { struct policydb *p; struct user_datum *usrdatum; - struct flex_array *fa; usrdatum = datum; p = datap; @@ -435,10 +415,7 @@ static int user_index(void *key, void *datum, void *datap) || usrdatum->bounds > p->p_users.nprim) return -EINVAL; - fa = p->sym_val_to_name[SYM_USERS]; - if (flex_array_put_ptr(fa, usrdatum->value - 1, key, - GFP_KERNEL | __GFP_ZERO)) - BUG(); + p->sym_val_to_name[SYM_USERS][usrdatum->value - 1] = key; p->user_val_to_struct[usrdatum->value - 1] = usrdatum; return 0; } @@ -447,7 +424,6 @@ static int sens_index(void *key, void *datum, void *datap) { struct policydb *p; struct level_datum *levdatum; - struct flex_array *fa; levdatum = datum; p = datap; @@ -456,10 +432,8 @@ static int sens_index(void *key, void *datum, void *datap) if (!levdatum->level->sens || levdatum->level->sens > p->p_levels.nprim) return -EINVAL; - fa = p->sym_val_to_name[SYM_LEVELS]; - if (flex_array_put_ptr(fa, levdatum->level->sens - 1, key, - GFP_KERNEL | __GFP_ZERO)) - BUG(); + + p->sym_val_to_name[SYM_LEVELS][levdatum->level->sens - 1] = key; } return 0; @@ -469,7 +443,6 @@ static int cat_index(void *key, void *datum, void *datap) { struct policydb *p; struct cat_datum *catdatum; - struct flex_array *fa; catdatum = datum; p = datap; @@ -477,10 +450,8 @@ static int cat_index(void *key, void *datum, void *datap) if (!catdatum->isalias) { if (!catdatum->value || catdatum->value > p->p_cats.nprim) return -EINVAL; - fa = p->sym_val_to_name[SYM_CATS]; - if (flex_array_put_ptr(fa, catdatum->value - 1, key, - GFP_KERNEL | __GFP_ZERO)) - BUG(); + + p->sym_val_to_name[SYM_CATS][catdatum->value - 1] = key; } return 0; @@ -568,35 +539,23 @@ static int policydb_index(struct policydb *p) if (!p->user_val_to_struct) return -ENOMEM; - /* Yes, I want the sizeof the pointer, not the structure */ - p->type_val_to_struct_array = flex_array_alloc(sizeof(struct type_datum *), - p->p_types.nprim, - GFP_KERNEL | __GFP_ZERO); + p->type_val_to_struct_array = kvcalloc(p->p_types.nprim, + sizeof(*p->type_val_to_struct_array), + GFP_KERNEL); if (!p->type_val_to_struct_array) return -ENOMEM; - rc = flex_array_prealloc(p->type_val_to_struct_array, 0, - p->p_types.nprim, GFP_KERNEL | __GFP_ZERO); - if (rc) - goto out; - rc = cond_init_bool_indexes(p); if (rc) goto out; for (i = 0; i < SYM_NUM; i++) { - p->sym_val_to_name[i] = flex_array_alloc(sizeof(char *), - p->symtab[i].nprim, - GFP_KERNEL | __GFP_ZERO); + p->sym_val_to_name[i] = kvcalloc(p->symtab[i].nprim, + sizeof(char *), + GFP_KERNEL); if (!p->sym_val_to_name[i]) return -ENOMEM; - rc = flex_array_prealloc(p->sym_val_to_name[i], - 0, p->symtab[i].nprim, - GFP_KERNEL | __GFP_ZERO); - if (rc) - goto out; - rc = hashtab_map(p->symtab[i].table, index_f[i], p); if (rc) goto out; @@ -809,16 +768,13 @@ void policydb_destroy(struct policydb *p) hashtab_destroy(p->symtab[i].table); } - for (i = 0; i < SYM_NUM; i++) { - if (p->sym_val_to_name[i]) - flex_array_free(p->sym_val_to_name[i]); - } + for (i = 0; i < SYM_NUM; i++) + kvfree(p->sym_val_to_name[i]); kfree(p->class_val_to_struct); kfree(p->role_val_to_struct); kfree(p->user_val_to_struct); - if (p->type_val_to_struct_array) - flex_array_free(p->type_val_to_struct_array); + kvfree(p->type_val_to_struct_array); avtab_destroy(&p->te_avtab); @@ -871,17 +827,9 @@ void policydb_destroy(struct policydb *p) hashtab_map(p->range_tr, range_tr_destroy, NULL); hashtab_destroy(p->range_tr); - if (p->type_attr_map_array) { - for (i = 0; i < p->p_types.nprim; i++) { - struct ebitmap *e; - - e = flex_array_get(p->type_attr_map_array, i); - if (!e) - continue; - ebitmap_destroy(e); - } - flex_array_free(p->type_attr_map_array); - } + for (i = 0; i < p->p_types.nprim; i++) + ebitmap_destroy(&p->type_attr_map_array[i]); + kvfree(p->type_attr_map_array); ebitmap_destroy(&p->filename_trans_ttypes); ebitmap_destroy(&p->policycaps); @@ -1761,8 +1709,7 @@ static int type_bounds_sanity_check(void *key, void *datum, void *datap) return -EINVAL; } - upper = flex_array_get_ptr(p->type_val_to_struct_array, - upper->bounds - 1); + upper = p->type_val_to_struct_array[upper->bounds - 1]; BUG_ON(!upper); if (upper->attribute) { @@ -2519,23 +2466,15 @@ int policydb_read(struct policydb *p, void *fp) if (rc) goto bad; - rc = -ENOMEM; - p->type_attr_map_array = flex_array_alloc(sizeof(struct ebitmap), - p->p_types.nprim, - GFP_KERNEL | __GFP_ZERO); + p->type_attr_map_array = kvcalloc(p->p_types.nprim, + sizeof(*p->type_attr_map_array), + GFP_KERNEL); if (!p->type_attr_map_array) goto bad; - /* preallocate so we don't have to worry about the put ever failing */ - rc = flex_array_prealloc(p->type_attr_map_array, 0, p->p_types.nprim, - GFP_KERNEL | __GFP_ZERO); - if (rc) - goto bad; - for (i = 0; i < p->p_types.nprim; i++) { - struct ebitmap *e = flex_array_get(p->type_attr_map_array, i); + struct ebitmap *e = &p->type_attr_map_array[i]; - BUG_ON(!e); ebitmap_init(e); if (p->policyvers >= POLICYDB_VERSION_AVTAB) { rc = ebitmap_read(e, fp); @@ -3524,9 +3463,8 @@ int policydb_write(struct policydb *p, void *fp) return rc; for (i = 0; i < p->p_types.nprim; i++) { - struct ebitmap *e = flex_array_get(p->type_attr_map_array, i); + struct ebitmap *e = &p->type_attr_map_array[i]; - BUG_ON(!e); rc = ebitmap_write(e, fp); if (rc) return rc; diff --git a/security/selinux/ss/policydb.h b/security/selinux/ss/policydb.h index 215f8f30ac..27039149ff 100644 --- a/security/selinux/ss/policydb.h +++ b/security/selinux/ss/policydb.h @@ -24,8 +24,6 @@ #ifndef _SS_POLICYDB_H_ #define _SS_POLICYDB_H_ -#include - #include "symtab.h" #include "avtab.h" #include "sidtab.h" @@ -251,13 +249,13 @@ struct policydb { #define p_cats symtab[SYM_CATS] /* symbol names indexed by (value - 1) */ - struct flex_array *sym_val_to_name[SYM_NUM]; + char **sym_val_to_name[SYM_NUM]; /* class, role, and user attributes indexed by (value - 1) */ struct class_datum **class_val_to_struct; struct role_datum **role_val_to_struct; struct user_datum **user_val_to_struct; - struct flex_array *type_val_to_struct_array; + struct type_datum **type_val_to_struct_array; /* type enforcement access vectors and transitions */ struct avtab te_avtab; @@ -294,7 +292,7 @@ struct policydb { struct hashtab *range_tr; /* type -> attribute reverse mapping */ - struct flex_array *type_attr_map_array; + struct ebitmap *type_attr_map_array; struct ebitmap policycaps; @@ -369,9 +367,7 @@ static inline int put_entry(const void *buf, size_t bytes, int num, struct polic static inline char *sym_name(struct policydb *p, unsigned int sym_num, unsigned int element_nr) { - struct flex_array *fa = p->sym_val_to_name[sym_num]; - - return flex_array_get_ptr(fa, element_nr); + return p->sym_val_to_name[sym_num][element_nr]; } extern u16 string_to_security_class(struct policydb *p, const char *name); diff --git a/security/selinux/ss/services.c b/security/selinux/ss/services.c index 12e4143945..24b59a7e6a 100644 --- a/security/selinux/ss/services.c +++ b/security/selinux/ss/services.c @@ -50,7 +50,6 @@ #include #include #include -#include #include #include @@ -546,15 +545,13 @@ static void type_attribute_bounds_av(struct policydb *policydb, struct type_datum *target; u32 masked = 0; - source = flex_array_get_ptr(policydb->type_val_to_struct_array, - scontext->type - 1); + source = policydb->type_val_to_struct_array[scontext->type - 1]; BUG_ON(!source); if (!source->bounds) return; - target = flex_array_get_ptr(policydb->type_val_to_struct_array, - tcontext->type - 1); + target = policydb->type_val_to_struct_array[tcontext->type - 1]; BUG_ON(!target); memset(&lo_avd, 0, sizeof(lo_avd)); @@ -654,11 +651,9 @@ static void context_struct_compute_av(struct policydb *policydb, */ avkey.target_class = tclass; avkey.specified = AVTAB_AV | AVTAB_XPERMS; - sattr = flex_array_get(policydb->type_attr_map_array, - scontext->type - 1); + sattr = &policydb->type_attr_map_array[scontext->type - 1]; BUG_ON(!sattr); - tattr = flex_array_get(policydb->type_attr_map_array, - tcontext->type - 1); + tattr = &policydb->type_attr_map_array[tcontext->type - 1]; BUG_ON(!tattr); ebitmap_for_each_positive_bit(sattr, snode, i) { ebitmap_for_each_positive_bit(tattr, tnode, j) { @@ -901,8 +896,7 @@ int security_bounded_transition(struct selinux_state *state, index = new_context->type; while (true) { - type = flex_array_get_ptr(policydb->type_val_to_struct_array, - index - 1); + type = policydb->type_val_to_struct_array[index - 1]; BUG_ON(!type); /* not bounded anymore */ @@ -1065,11 +1059,9 @@ void security_compute_xperms_decision(struct selinux_state *state, avkey.target_class = tclass; avkey.specified = AVTAB_XPERMS; - sattr = flex_array_get(policydb->type_attr_map_array, - scontext->type - 1); + sattr = &policydb->type_attr_map_array[scontext->type - 1]; BUG_ON(!sattr); - tattr = flex_array_get(policydb->type_attr_map_array, - tcontext->type - 1); + tattr = &policydb->type_attr_map_array[tcontext->type - 1]; BUG_ON(!tattr); ebitmap_for_each_positive_bit(sattr, snode, i) { ebitmap_for_each_positive_bit(tattr, tnode, j) {