linux-hardening - [PATCH 010/141] ima: Fix fall-through warnings for Clang

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Date:   Fri, 20 Nov 2020 12:25:46 -0600
From:   "Gustavo A. R. Silva" <gustavoars@...nel.org>
To:     Mimi Zohar <zohar@...ux.ibm.com>,
        Dmitry Kasatkin <dmitry.kasatkin@...il.com>,
        James Morris <jmorris@...ei.org>,
        "Serge E. Hallyn" <serge@...lyn.com>
Cc:     linux-integrity@...r.kernel.org,
        linux-security-module@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-hardening@...r.kernel.org,
        "Gustavo A. R. Silva" <gustavoars@...nel.org>
Subject: [PATCH 010/141] ima: Fix fall-through warnings for Clang

In preparation to enable -Wimplicit-fallthrough for Clang, fix multiple
warnings by explicitly adding multiple break statements instead of just
letting the code fall through to the next case.

Link: https://github.com/KSPP/linux/issues/115
Signed-off-by: Gustavo A. R. Silva <gustavoars@...nel.org>
---
 security/integrity/ima/ima_main.c   | 1 +
 security/integrity/ima/ima_policy.c | 2 ++
 2 files changed, 3 insertions(+)

diff --git a/security/integrity/ima/ima_main.c b/security/integrity/ima/ima_main.c
index 2d1af8899cab..600b97677085 100644
--- a/security/integrity/ima/ima_main.c
+++ b/security/integrity/ima/ima_main.c
@@ -743,6 +743,7 @@ int ima_load_data(enum kernel_load_data_id id, bool contents)
 			pr_err("impossible to appraise a module without a file descriptor. sig_enforce kernel parameter might help\n");
 			return -EACCES;	/* INTEGRITY_UNKNOWN */
 		}
+		break;
 	default:
 		break;
 	}
diff --git a/security/integrity/ima/ima_policy.c b/security/integrity/ima/ima_policy.c
index 9b5adeaa47fc..ea634fc3b82f 100644
--- a/security/integrity/ima/ima_policy.c
+++ b/security/integrity/ima/ima_policy.c
@@ -566,6 +566,7 @@ static bool ima_match_rules(struct ima_rule_entry *rule, struct inode *inode,
 			rc = ima_filter_rule_match(secid, rule->lsm[i].type,
 						   Audit_equal,
 						   rule->lsm[i].rule);
+			break;
 		default:
 			break;
 		}
@@ -802,6 +803,7 @@ void __init ima_init_policy(void)
 		add_rules(default_measurement_rules,
 			  ARRAY_SIZE(default_measurement_rules),
 			  IMA_DEFAULT_POLICY);
+		break;
 	default:
 		break;
 	}
-- 
2.27.0