linux-kernel - [PATCH 7/9] selinux: do not discard const qualifier in cast

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Date:   Tue, 25 Jan 2022 15:14:17 +0100
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>,
        Nathan Chancellor <nathan@...nel.org>,
        Nick Desaulniers <ndesaulniers@...gle.com>,
        Jeff Vander Stoep <jeffv@...gle.com>,
        linux-kernel@...r.kernel.org, llvm@...ts.linux.dev
Subject: [PATCH 7/9] selinux: do not discard const qualifier in cast

Do not discard the const qualifier on the cast from const void* to
__be32*; the addressed value is not modified.

Reported by clang [-Wcast-qual]

Signed-off-by: Christian Göttsche <cgzones@...glemail.com>
---
 security/selinux/netnode.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/security/selinux/netnode.c b/security/selinux/netnode.c
index 4a7d2ab5b960..889552db0d31 100644
--- a/security/selinux/netnode.c
+++ b/security/selinux/netnode.c
@@ -107,7 +107,7 @@ static struct sel_netnode *sel_netnode_find(const void *addr, u16 family)
 
 	switch (family) {
 	case PF_INET:
-		idx = sel_netnode_hashfn_ipv4(*(__be32 *)addr);
+		idx = sel_netnode_hashfn_ipv4(*(const __be32 *)addr);
 		break;
 	case PF_INET6:
 		idx = sel_netnode_hashfn_ipv6(addr);
@@ -121,7 +121,7 @@ static struct sel_netnode *sel_netnode_find(const void *addr, u16 family)
 		if (node->nsec.family == family)
 			switch (family) {
 			case PF_INET:
-				if (node->nsec.addr.ipv4 == *(__be32 *)addr)
+				if (node->nsec.addr.ipv4 == *(const __be32 *)addr)
 					return node;
 				break;
 			case PF_INET6:
-- 
2.34.1