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From:   Michal Orzel <michalorzel.eng@gmail.com>
To:     Mimi Zohar <zohar@linux.ibm.com>,
        Dmitry Kasatkin <dmitry.kasatkin@gmail.com>,
        James Morris <jmorris@namei.org>,
        "Serge E. Hallyn" <serge@hallyn.com>,
        Nathan Chancellor <nathan@kernel.org>,
        Nick Desaulniers <ndesaulniers@google.com>
Cc:     Michal Orzel <michalorzel.eng@gmail.com>,
        linux-integrity@vger.kernel.org,
        linux-security-module@vger.kernel.org,
        linux-kernel@vger.kernel.org, llvm@lists.linux.dev
Subject: [PATCH 2/5] integrity: Remove redundant assignments
Date:   Thu, 31 Mar 2022 19:33:55 +0200
Message-Id: <20220331173358.40939-2-michalorzel.eng@gmail.com>
In-Reply-To: <20220331173358.40939-1-michalorzel.eng@gmail.com>
References: <20220331173358.40939-1-michalorzel.eng@gmail.com>
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Get rid of redundant assignments which end up in values not being
read either because they are overwritten or the function ends.

Reported by clang-tidy [deadcode.DeadStores]

Signed-off-by: Michal Orzel <michalorzel.eng@gmail.com>
---
 security/integrity/ima/ima_main.c   | 2 +-
 security/integrity/ima/ima_modsig.c | 2 +-
 security/integrity/ima/ima_policy.c | 2 +-
 3 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/security/integrity/ima/ima_main.c b/security/integrity/ima/ima_main.c
index 3d3f8c5c502b..1aebf63ad7a6 100644
--- a/security/integrity/ima/ima_main.c
+++ b/security/integrity/ima/ima_main.c
@@ -432,7 +432,7 @@ int ima_file_mmap(struct file *file, unsigned long prot)
 int ima_file_mprotect(struct vm_area_struct *vma, unsigned long prot)
 {
 	struct ima_template_desc *template = NULL;
-	struct file *file = vma->vm_file;
+	struct file *file;
 	char filename[NAME_MAX];
 	char *pathbuf = NULL;
 	const char *pathname = NULL;
diff --git a/security/integrity/ima/ima_modsig.c b/security/integrity/ima/ima_modsig.c
index fb25723c65bc..2c9d451d6326 100644
--- a/security/integrity/ima/ima_modsig.c
+++ b/security/integrity/ima/ima_modsig.c
@@ -109,7 +109,7 @@ void ima_collect_modsig(struct modsig *modsig, const void *buf, loff_t size)
 		return;
 
 	/* Ask the PKCS7 code to calculate the file hash. */
-	rc = pkcs7_get_digest(modsig->pkcs7_msg, &modsig->digest,
+	pkcs7_get_digest(modsig->pkcs7_msg, &modsig->digest,
 			      &modsig->digest_size, &modsig->hash_algo);
 }
 
diff --git a/security/integrity/ima/ima_policy.c b/security/integrity/ima/ima_policy.c
index eea6e92500b8..c328c2266092 100644
--- a/security/integrity/ima/ima_policy.c
+++ b/security/integrity/ima/ima_policy.c
@@ -869,7 +869,7 @@ static int __init ima_init_arch_policy(void)
 		char rule[255];
 		int result;
 
-		result = strscpy(rule, *rules, sizeof(rule));
+		strscpy(rule, *rules, sizeof(rule));
 
 		INIT_LIST_HEAD(&arch_policy_entry[i].list);
 		result = ima_parse_rule(rule, &arch_policy_entry[i]);
-- 
2.25.1