linux-kernel - [PATCH v2 4/9] selinux: avoid implicit conversions in mls code

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: <20230728155501.39632-3-cgzones@googlemail.com>
Date:   Fri, 28 Jul 2023 17:54:54 +0200
From:   Christian Göttsche <cgzones@...glemail.com>
To:     selinux@...r.kernel.org
Cc:     Paul Moore <paul@...l-moore.com>,
        Stephen Smalley <stephen.smalley.work@...il.com>,
        Eric Paris <eparis@...isplace.org>,
        linux-kernel@...r.kernel.org
Subject: [PATCH v2 4/9] selinux: avoid implicit conversions in mls code

Use u32 for ebitmap bits.

Use char for the default range of a class.

Signed-off-by: Christian Göttsche <cgzones@...glemail.com>
---
v2: avoid declarations in init-clauses of for loops
---
 security/selinux/ss/mls.c | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/security/selinux/ss/mls.c b/security/selinux/ss/mls.c
index b2c6c846ea03..cd38f5913b63 100644
--- a/security/selinux/ss/mls.c
+++ b/security/selinux/ss/mls.c
@@ -45,7 +45,7 @@ int mls_compute_context_len(struct policydb *p, struct context *context)
 
 	len = 1; /* for the beginning ":" */
 	for (l = 0; l < 2; l++) {
-		int index_sens = context->range.level[l].sens;
+		u32 index_sens = context->range.level[l].sens;
 		len += strlen(sym_name(p, SYM_LEVELS, index_sens - 1));
 
 		/* categories */
@@ -240,7 +240,8 @@ int mls_context_to_sid(struct policydb *pol,
 	char *sensitivity, *cur_cat, *next_cat, *rngptr;
 	struct level_datum *levdatum;
 	struct cat_datum *catdatum, *rngdatum;
-	int l, rc, i;
+	u32 i;
+	int l, rc;
 	char *rangep[2];
 
 	if (!pol->mls_enabled) {
@@ -451,7 +452,8 @@ int mls_convert_context(struct policydb *oldp,
 	struct level_datum *levdatum;
 	struct cat_datum *catdatum;
 	struct ebitmap_node *node;
-	int l, i;
+	u32 i;
+	int l;
 
 	if (!oldp->mls_enabled || !newp->mls_enabled)
 		return 0;
@@ -495,7 +497,7 @@ int mls_compute_sid(struct policydb *p,
 	struct range_trans rtr;
 	struct mls_range *r;
 	struct class_datum *cladatum;
-	int default_range = 0;
+	char default_range = 0;
 
 	if (!p->mls_enabled)
 		return 0;
-- 
2.40.1