selinux: Remove redundant assignment to rc

Variable rc is set to '-EINVAL' but this value is never read as it is overwritten or not used later on, hence it is a redundant assignment and can be removed. Cleans up the following clang-analyzer warning: security/selinux/ss/services.c:2103:3: warning: Value stored to 'rc' is never read [clang-analyzer-deadcode.DeadStores]. security/selinux/ss/services.c:2079:2: warning: Value stored to 'rc' is never read [clang-analyzer-deadcode.DeadStores]. security/selinux/ss/services.c:2071:2: warning: Value stored to 'rc' is never read [clang-analyzer-deadcode.DeadStores]. security/selinux/ss/services.c:2062:2: warning: Value stored to 'rc' is never read [clang-analyzer-deadcode.DeadStores]. security/selinux/ss/policydb.c:2592:3: warning: Value stored to 'rc' is never read [clang-analyzer-deadcode.DeadStores]. Reported-by: Abaci Robot <abaci@linux.alibaba.com> Signed-off-by: Jiapeng Chong <jiapeng.chong@linux.alibaba.com> Signed-off-by: Paul Moore <paul@paul-moore.com>
mariux64 · May 11, 2021 · fd781f4 · fd781f4
1 parent 7cffc37
commit fd781f4
Show file tree

Hide file tree

Showing 2 changed files with 0 additions and 5 deletions.
diff --git a/security/selinux/ss/policydb.c b/security/selinux/ss/policydb.c
@@ -2589,7 +2589,6 @@ int policydb_read(struct policydb *p, void *fp)
 		if (rc)
 			goto bad;
 
-		rc = -EINVAL;
 		rtk->role = le32_to_cpu(buf[0]);
 		rtk->type = le32_to_cpu(buf[1]);
 		rtd->new_role = le32_to_cpu(buf[2]);

diff --git a/security/selinux/ss/services.c b/security/selinux/ss/services.c
@@ -2060,7 +2060,6 @@ static int convert_context(struct context *oldc, struct context *newc, void *p)
 	context_init(newc);
 
 	/* Convert the user. */
-	rc = -EINVAL;
 	usrdatum = symtab_search(&args->newp->p_users,
 				 sym_name(args->oldp,
 					  SYM_USERS, oldc->user - 1));
@@ -2069,15 +2068,13 @@ static int convert_context(struct context *oldc, struct context *newc, void *p)
 	newc->user = usrdatum->value;
 
 	/* Convert the role. */
-	rc = -EINVAL;
 	role = symtab_search(&args->newp->p_roles,
 			     sym_name(args->oldp, SYM_ROLES, oldc->role - 1));
 	if (!role)
 		goto bad;
 	newc->role = role->value;
 
 	/* Convert the type. */
-	rc = -EINVAL;
 	typdatum = symtab_search(&args->newp->p_types,
 				 sym_name(args->oldp,
 					  SYM_TYPES, oldc->type - 1));
@@ -2101,7 +2098,6 @@ static int convert_context(struct context *oldc, struct context *newc, void *p)
 		oc = args->newp->ocontexts[OCON_ISID];
 		while (oc && oc->sid[0] != SECINITSID_UNLABELED)
 			oc = oc->next;
-		rc = -EINVAL;
 		if (!oc) {
 			pr_err("SELinux:  unable to look up"
 				" the initial SIDs list\n");