linux-kernel - [PATCH v39 28/42] LSM: Improve logic in security

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20231215221636.105680-29-casey@schaufler-ca.com>
Date: Fri, 15 Dec 2023 14:16:22 -0800
From: Casey Schaufler <casey@...aufler-ca.com>
To: casey@...aufler-ca.com,
	paul@...l-moore.com,
	linux-security-module@...r.kernel.org
Cc: jmorris@...ei.org,
	serge@...lyn.com,
	keescook@...omium.org,
	john.johansen@...onical.com,
	penguin-kernel@...ove.sakura.ne.jp,
	stephen.smalley.work@...il.com,
	linux-kernel@...r.kernel.org,
	mic@...ikod.net
Subject: [PATCH v39 28/42] LSM: Improve logic in security_getprocattr

The conditional in security_getprocattr() can be simplified
and made clearer. This change does that.

Signed-off-by: Casey Schaufler <casey@...aufler-ca.com>
---
 security/security.c | 9 ++++-----
 1 file changed, 4 insertions(+), 5 deletions(-)

diff --git a/security/security.c b/security/security.c
index 8ff6cef26e6c..f2ef6032a925 100644
--- a/security/security.c
+++ b/security/security.c
@@ -4107,11 +4107,10 @@ int security_getprocattr(struct task_struct *p, int lsmid, const char *name,
 {
 	struct security_hook_list *hp;
 
-	hlist_for_each_entry(hp, &security_hook_heads.getprocattr, list) {
-		if (lsmid != 0 && lsmid != hp->lsmid->id)
-			continue;
-		return hp->hook.getprocattr(p, name, value);
-	}
+	hlist_for_each_entry(hp, &security_hook_heads.getprocattr, list)
+		if (lsmid == LSM_ID_UNDEF || lsmid == hp->lsmid->id)
+			return hp->hook.getprocattr(p, name, value);
+
 	return LSM_RET_DEFAULT(getprocattr);
 }
 
-- 
2.41.0