[v39,15/42] Netlabel: Use lsmblob for audit data

Message ID	20231215221636.105680-16-casey@schaufler-ca.com (mailing list archive)
State	Under Review
Delegated to:	Paul Moore
Headers	show Received: from sonic315-27.consmr.mail.ne1.yahoo.com (sonic315-27.consmr.mail.ne1.yahoo.com [66.163.190.153]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id CE44118EAF for <linux-security-module@vger.kernel.org>; Fri, 15 Dec 2023 22:27:55 +0000 (UTC) From: Casey Schaufler <casey@schaufler-ca.com> To: casey@schaufler-ca.com, paul@paul-moore.com, linux-security-module@vger.kernel.org Cc: jmorris@namei.org, serge@hallyn.com, keescook@chromium.org, john.johansen@canonical.com, penguin-kernel@i-love.sakura.ne.jp, stephen.smalley.work@gmail.com, linux-kernel@vger.kernel.org, mic@digikod.net Subject: [PATCH v39 15/42] Netlabel: Use lsmblob for audit data Date: Fri, 15 Dec 2023 14:16:09 -0800 Message-ID: <20231215221636.105680-16-casey@schaufler-ca.com> In-Reply-To: <20231215221636.105680-1-casey@schaufler-ca.com> References: <20231215221636.105680-1-casey@schaufler-ca.com> Precedence: bulk MIME-Version: 1.0 Content-Transfer-Encoding: 8bit
Series	LSM: General module stacking \| expand [v39,00/42] LSM: General module stacking [v39,01/42] integrity: disassociate ima_filter_rule from security_audit_rule [v39,02/42] SM: Infrastructure management of the sock security [v39,03/42] LSM: Add the lsmblob data structure. [v39,04/42] IMA: avoid label collisions with stacked LSMs [v39,05/42] LSM: Use lsmblob in security_audit_rule_match [v39,06/42] LSM: Add lsmblob_to_secctx hook [v39,07/42] Audit: maintain an lsmblob in audit_context [v39,08/42] LSM: Use lsmblob in security_ipc_getsecid [v39,09/42] Audit: Update shutdown LSM data [v39,10/42] LSM: Use lsmblob in security_current_getsecid [v39,11/42] LSM: Use lsmblob in security_inode_getsecid [v39,12/42] Audit: use an lsmblob in audit_names [v39,13/42] LSM: Create new security_cred_getlsmblob LSM hook [v39,14/42] Audit: Change context data from secid to lsmblob [v39,15/42] Netlabel: Use lsmblob for audit data [v39,16/42] LSM: Ensure the correct LSM context releaser [v39,17/42] LSM: Use lsmcontext in security_secid_to_secctx [v39,18/42] LSM: Use lsmcontext in security_lsmblob_to_secctx [v39,19/42] LSM: Use lsmcontext in security_inode_getsecctx [v39,20/42] LSM: Use lsmcontext in security_dentry_init_security [v39,21/42] LSM: security_lsmblob_to_secctx module selection [v39,22/42] Audit: Create audit_stamp structure [v39,23/42] Audit: Allow multiple records in an audit_buffer [v39,24/42] Audit: Add record for multiple task security contexts [v39,25/42] audit: multiple subject lsm values for netlabel [v39,26/42] Audit: Add record for multiple object contexts [v39,27/42] LSM: Remove unused lsmcontext_init() [v39,28/42] LSM: Improve logic in security_getprocattr [v39,29/42] LSM: secctx provider check on release [v39,30/42] LSM: Single calls in socket_getpeersec hooks [v39,31/42] LSM: Exclusive secmark usage [v39,32/42] LSM: Identify which LSM handles the context string [v39,33/42] AppArmor: Remove the exclusive flag [v39,34/42] LSM: Add mount opts blob size tracking [v39,35/42] LSM: allocate mnt_opts blobs instead of module specific data [v39,36/42] LSM: Infrastructure management of the key security blob [v39,37/42] LSM: Infrastructure management of the mnt_opts security blob [v39,38/42] LSM: Correct handling of ENOSYS in inode_setxattr [v39,39/42] LSM: Remove lsmblob scaffolding [v39,40/42] LSM: Allow reservation of netlabel [v39,41/42] LSM: restrict security_cred_getsecid() to a single LSM [v39,42/42] Smack: Remove LSM_FLAG_EXCLUSIVE

Message ID

20231215221636.105680-16-casey@schaufler-ca.com (mailing list archive)

State

Under Review

Delegated to:

Paul Moore

Headers

From: Casey Schaufler <casey@schaufler-ca.com>
To: casey@schaufler-ca.com,
	paul@paul-moore.com,
	linux-security-module@vger.kernel.org
Cc: jmorris@namei.org,
	serge@hallyn.com,
	keescook@chromium.org,
	john.johansen@canonical.com,
	penguin-kernel@i-love.sakura.ne.jp,
	stephen.smalley.work@gmail.com,
	linux-kernel@vger.kernel.org,
	mic@digikod.net
Subject: [PATCH v39 15/42] Netlabel: Use lsmblob for audit data
Date: Fri, 15 Dec 2023 14:16:09 -0800
Message-ID: <20231215221636.105680-16-casey@schaufler-ca.com>
In-Reply-To: <20231215221636.105680-1-casey@schaufler-ca.com>
References: <20231215221636.105680-1-casey@schaufler-ca.com>
Precedence: bulk
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit

Series

LSM: General module stacking | expand

Commit Message

Casey Schaufler Dec. 15, 2023, 10:16 p.m. UTC

Replace the secid in the netlbl_audit structure with an lsmblob.
Remove stacking scaffolding that was required when the value
was a secid.

Signed-off-by: Casey Schaufler <casey@schaufler-ca.com>
---
 include/net/netlabel.h            | 2 +-
 net/netlabel/netlabel_unlabeled.c | 5 +----
 net/netlabel/netlabel_user.c      | 7 +++----
 net/netlabel/netlabel_user.h      | 6 +-----
 security/smack/smackfs.c          | 4 +---
 5 files changed, 7 insertions(+), 17 deletions(-)

diff --git a/include/net/netlabel.h b/include/net/netlabel.h
index 43ae50337685..03656b8d0b4f 100644
--- a/include/net/netlabel.h
+++ b/include/net/netlabel.h
@@ -97,7 +97,7 @@  struct calipso_doi;
 
 /* NetLabel audit information */
 struct netlbl_audit {
-	u32 secid;
+	struct lsmblob blob;
 	kuid_t loginuid;
 	unsigned int sessionid;
 };
diff --git a/net/netlabel/netlabel_unlabeled.c b/net/netlabel/netlabel_unlabeled.c
index 129d71c147f1..7bac13ae07a3 100644
--- a/net/netlabel/netlabel_unlabeled.c
+++ b/net/netlabel/netlabel_unlabeled.c
@@ -1534,14 +1534,11 @@  int __init netlbl_unlabel_defconf(void)
 	int ret_val;
 	struct netlbl_dom_map *entry;
 	struct netlbl_audit audit_info;
-	struct lsmblob blob;
 
 	/* Only the kernel is allowed to call this function and the only time
 	 * it is called is at bootup before the audit subsystem is reporting
 	 * messages so don't worry to much about these values. */
-	security_current_getlsmblob_subj(&blob);
-	/* stacking scaffolding */
-	audit_info.secid = blob.scaffold.secid;
+	security_current_getlsmblob_subj(&audit_info.blob);
 	audit_info.loginuid = GLOBAL_ROOT_UID;
 	audit_info.sessionid = 0;
 
diff --git a/net/netlabel/netlabel_user.c b/net/netlabel/netlabel_user.c
index 3ed4fea2a2de..6cd1fcb3902b 100644
--- a/net/netlabel/netlabel_user.c
+++ b/net/netlabel/netlabel_user.c
@@ -98,10 +98,9 @@  struct audit_buffer *netlbl_audit_start_common(int type,
 			 from_kuid(&init_user_ns, audit_info->loginuid),
 			 audit_info->sessionid);
 
-	if (audit_info->secid != 0 &&
-	    security_secid_to_secctx(audit_info->secid,
-				     &secctx,
-				     &secctx_len) == 0) {
+	if (lsmblob_is_set(&audit_info->blob) &&
+	    security_lsmblob_to_secctx(&audit_info->blob, &secctx,
+				       &secctx_len) == 0) {
 		audit_log_format(audit_buf, " subj=%s", secctx);
 		security_release_secctx(secctx, secctx_len);
 	}
diff --git a/net/netlabel/netlabel_user.h b/net/netlabel/netlabel_user.h
index c4864fa18a08..1a9639005d09 100644
--- a/net/netlabel/netlabel_user.h
+++ b/net/netlabel/netlabel_user.h
@@ -32,11 +32,7 @@ 
  */
 static inline void netlbl_netlink_auditinfo(struct netlbl_audit *audit_info)
 {
-	struct lsmblob blob;
-
-	security_current_getlsmblob_subj(&blob);
-	/* stacking scaffolding */
-	audit_info->secid = blob.scaffold.secid;
+	security_current_getlsmblob_subj(&audit_info->blob);
 	audit_info->loginuid = audit_get_loginuid(current);
 	audit_info->sessionid = audit_get_sessionid(current);
 }
diff --git a/security/smack/smackfs.c b/security/smack/smackfs.c
index e22aad7604e8..878fe44b662d 100644
--- a/security/smack/smackfs.c
+++ b/security/smack/smackfs.c
@@ -182,11 +182,9 @@  static inline void smack_catset_bit(unsigned int cat, char *catsetp)
  */
 static void smk_netlabel_audit_set(struct netlbl_audit *nap)
 {
-	struct smack_known *skp = smk_of_current();
-
 	nap->loginuid = audit_get_loginuid(current);
 	nap->sessionid = audit_get_sessionid(current);
-	nap->secid = skp->smk_secid;
+	nap->blob.smack.skp = smk_of_current();
 }
 
 /*

[v39,15/42] Netlabel: Use lsmblob for audit data

Commit Message

Patch