selinux: Improve size determinations in four functions

Replace the specification of data structures by pointer dereferences
as the parameter for the operator "sizeof" to make the corresponding size
determination a bit safer.

Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Paul Moore <paul@paul-moore.com>

diff --git a/security/selinux/ss/conditional.c b/security/selinux/ss/conditional.c
index 4a3bf29f7565a840f803f47ab7db4c2b124c99f5..771c96afe1d53b9a4735e7f850d1266af31e8fe7 100644 (file)
--- a/security/selinux/ss/conditional.c
+++ b/security/selinux/ss/conditional.c
@@ -227,7 +227,7 @@ int cond_read_bool(struct policydb *p, struct hashtab *h, void *fp)
        u32 len;
        int rc;
 
-       booldatum = kzalloc(sizeof(struct cond_bool_datum), GFP_KERNEL);
+       booldatum = kzalloc(sizeof(*booldatum), GFP_KERNEL);
        if (!booldatum)
                return -ENOMEM;
 
@@ -332,7 +332,7 @@ static int cond_insertf(struct avtab *a, struct avtab_key *k, struct avtab_datum
                goto err;
        }
 
-       list = kzalloc(sizeof(struct cond_av_list), GFP_KERNEL);
+       list = kzalloc(sizeof(*list), GFP_KERNEL);
        if (!list) {
                rc = -ENOMEM;
                goto err;
@@ -421,7 +421,7 @@ static int cond_read_node(struct policydb *p, struct cond_node *node, void *fp)
                        goto err;
 
                rc = -ENOMEM;
-               expr = kzalloc(sizeof(struct cond_expr), GFP_KERNEL);
+               expr = kzalloc(sizeof(*expr), GFP_KERNEL);
                if (!expr)
                        goto err;
 
@@ -472,7 +472,7 @@ int cond_read_list(struct policydb *p, void *fp)
 
        for (i = 0; i < len; i++) {
                rc = -ENOMEM;
-               node = kzalloc(sizeof(struct cond_node), GFP_KERNEL);
+               node = kzalloc(sizeof(*node), GFP_KERNEL);
                if (!node)
                        goto err;